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1. When using, remove the drill from the box and install it into the spring chuck of the spindle or automatically replace the tool magazine of the drill bit. When you are done, put it back in the box. When drilling steel, ensure adequate cooling and use metal cutting fluid.
2. Good drill pipe rigidity and guide rail clearance can improve the accuracy of drilling and the life of the drill bit.
3. Please ensure the leveling and cleaning between the magnetic base and the workpiece.
4. When drilling a thin plate, the workpiece should be reinforced, and when the large workpiece is drilled, please ensure the stability of the workpiece.
5. At the beginning and end of the drilling, the feed should be reduced by 1/3.
6. For materials with a large amount of fine powder during drilling, such as cast iron, cast copper, etc., no coolant can be used.
7. Some CNC drill presses use a positioning ring. Some CNC drill presses do not use a positioning ring. If a positioning ring is used, the depth positioning during installation must be accurate. If the positioning ring is not used, the elongation of the drill bit to the main shaft should be adjusted.  More attention should be paid to multi-spindle drilling machines. Make the drilling depth of each spindle consistent. If they are inconsistent, it is possible to drill the drill bit to the countertop or to drill through the circuit board.
8. Please remove the iron filings on the drill body in time to ensure smooth chip removal.
9. Always check the concentricity of the spindle and collet and the clamping force of the collet.  Poor concentricity can result in broken drills and large apertures for small diameter drill bits. Poor clamping force will cause the actual speed to not match the set speed, and the slip between the chuck and thehole opener bit.
10. To measure the diameter of the hole opener bit, use a non-contact measuring instrument such as a tool microscope to avoid the cutting edge being in contact with the mechanical measuring instrument and being bumped.

ABT Drilling Equipment Co., Ltd. mainly provides holistic drilling solutions, serving the mining, stone crushing, water conservancy drilling industry, abt machine tools , to help you solve the problem of drilling at high efficiency and low cost. We mainly provide mobile air compressors, drilling rigs, hammer, drill bit, crushers, underground water detector.We are your trustworthy partner.RFQ today!

In the process of packaging and paper products processing, static electricity is a common topic. With the mass production of RFID tags on broader and faster printing presses, electrostatic control has become an increasingly important issue.

With the emergence of radio frequency identification technology, radio frequency tag (RFID) has also entered the paper products processing industry. Equipment suppliers want to become the industry's leading provider of RFID solution, which has led to the rapid promotion of this technology throughout the industry. The application range of RFID tags is infinite. Although it can bring countless opportunities to people, it will also bring a certain degree of challenge to people with the increase of the number of users.

Most label and trademark processors are asking, "What exactly is a RFID tag?" Radio frequency technology is a method that can store and retrieve data remotely. It uses radio frequency label as its carrier. The tag contains an antenna that receives and reflects radio waves from radio transceivers. According to the different power supply mode of radio frequency tag, it can be divided into two kinds, and one is active RFID tag, the other is passive RFID tag. Active RFID tags contain built-in batteries, while the latter do not contain built-in batteries. Built-in batteries can send clear signals far away, but RF tags which can send far are also relatively large in size and more expensive than passive RF tags.

Problem

In the process of packaging and paper products processing, static electricity is a common topic. For example, vertical cutting, printing and coating are all related to static electricity.

Electrostatic charge is produced by the contact and separation of materials during different stages of production and treatment. When materials contact and separate from each other, the friction between them (friction electrification) will produce surface charges, or static charges. From the definition, electrostatic charge is the residual charge caused by charge imbalance. This charge is usually generated on insulating materials, such as film or coated paper, or on conductive surfaces isolated from the ground. This is important because many material suppliers claim that their new antistatic materials can protect RF chips from static charges. Unfortunately, their statement is not entirely correct, because electrostatic charges can be transferred to conductive objects isolated from the ground. Once such a conductive object (such as a radio frequency chip) is close to the ground, the transfer of charge can cause damage to the object.

　美国高中教育以精英教育和全面发展而享誉世界，因此越来越多的人选择送孩子去美国读高中。下面求真教育小编为大家介绍下美国高中留学申请时间应该如何规划。

　　7月~8月：初步选择申请院校，准备申请材料

　　在院校选择方面，各位家长要综合考虑学校的教育质量，其次是学校的地理位置，周边环境等等，一定要适合自家孩子，不能仓促决定。

　　9月~12月：参加托福，SSAT考试

　　不管申请哪个层次的院校，托福和SSAT都是必须要考的，为了申请美国顶尖高中，也为了在院校选择中不至于受困，建议学生尽可能刷高分。

　　10月~12月：寄送申请，预约面试

　　申请材料能够看出申请学生的性格特点，能够知道他们所擅长的学科，因此各位家长们要仔细准备各项申请材料。如果需要的话，可以申请预约面试，把孩子最好的一面展示给院校，最终为申请名校奠基。

　　1月~3月：与学校保持联系，随时咨询申请进度

　　在这个时间段，学校开始评估申请学生的各项能力要求，这个时候要随时保持与学校的沟通，能够询问评估进度，也给学校留下较为深刻的印象。但是，小编不太建议天天催促询问，这中间得讲究一个“度”的问题，如果各位家长不知道如何保持联系，可以向市面上的留学中介进行咨询。

　　4月~5月：收到录取offer

　　美国大多数私立高中会在4月左右发送录取结果，同学们拿到录取offer后可以根据自身条件，选择最适合自己的院校，然后及时给学校反馈。

　　6月~7月：缴纳定金，预约签证

　　申请学生需要在这段时间内支付学费定金，并在开学前支付剩下的学费，然后开始办理签证。

　　8月：行前准备

　　准备行李，安排接机，解决住宿问题等等。

　　想要去美国高中留学，申请无疑是重大的一步，在提交资料时，一定要按照学校的要求，面试时，多展现优秀的一面，并且做好全方位的准备，相信你就可以马到成功。

1. Cause of failure

The jumbo drill rig pipe is fixed to the main hoisting reel by a wire rope. The drill pipe can be raised or lowered as the roll is rolled or the wire rope is placed. The power of the reel comes from the main hoisting motor that has been decelerated several times. Its stopping is achieved by means of a brake mounted directly on the gear unit. During the lifting or lowering of the drill pipe, if the operating handle is returned to the neutral position and the drill pipe cannot be stopped quickly, there may be three reasons. One is the brake lag. Second, the two hydraulic locks at the end of the motor are out of order, and the motor cannot stop rotating immediately under the action of the wire rope torque; the third reason is easily overlooked. All jumbo drill rigs have a drill stem release function. The function is to provide the brake signal oil by the solenoid valve 3, and then the solenoid valve 2 connects the inlet and outlet ports of the main hoisting motor through the two oil pipes, thereby ensuring that the drill bit can always contact the working surface during the drilling process. There is a certain amount of pressure. In other working conditions, the solenoid valve 2 disconnects the two oil pipes leading to the motor inlet and outlet ports. If the disconnection is not timely, the above symptoms will occur.

(1) Judging the solenoid valve 2

It is judged whether the solenoid valve 2 is closed tightly: the two oil pipes leading to the solenoid valve 2 at the motor are removed, and the two oil ports of the motor end are respectively blocked by the two plugs, and then the main hoisting mechanism is operated. If it is working properly, the fault is caused by the solenoid valve 2 being closed; if it is still abnormal, it is necessary to check its components.

(2) Judging the hydraulic lock

Judging whether there is a problem with the hydraulic lock of the jumbo drill rig: Firstly, adjust the two lock cylinders. If it does not work, remove the lock and check it carefully. If the reason is not found, the ready-made lock can be used to test the installation to find the reason of fault. Because the sub-hoisted hydraulic lock is the same as the main winch, it is also possible to borrow the sub-hoisted lock. Use the replacement method to identify the quality of the main winch lock. If there are no problems with both locks, check the next step.

(3) Judging the brake signal oil

Check the speed of the brake signal oil supply and disconnection: the flow rate of the signal oil of the current engineering rig can be adjusted, that is, the time for the main hoist to release the brake can be adjusted. Therefore, for both types of rigs, the flow of the signal oil can be adjusted by its regulating valve. If the machine is still not working properly, check the tubing of the brake signal oil for blockage. If these inspection sites are normal, you can only continue to check.

(4) Judging the brake

Dismantle the brakes of jumbo drill rigs: See if the brake pistons move smoothly in the work line and repair or replace them for the cause of the malfunction.

ABT Drilling Equipment Co., Ltd. mainly provides holistic drilling solutions, serving the mining, stone crushing, water conservancy drilling industry, abt machine tools , to help you solve the problem of drilling at high efficiency and low cost. We mainly provide mobile air compressors, drilling rigs, hammer, drill bit, crushers, underground water detector.We are your trustworthy partner.RFQ today!

History of RFID tags

In 1937, the U.S. Naval Research Laboratory (NRL) developed the identification Friend-or-Foe (IFF) system to distinguish allied aircraft from enemy aircraft. This technology later became the basis of modern air traffic control in the 1950s. And it is the germination of the early RFID technology, which has priority use in military, laboratory and so on.

In the late 1960s and early 1970s, radio frequency goods monitoring system is a common anti-theft system in shopping malls.

In the 1980s, early commercial applications included railways and food.

In the 1990s, standardization began, and the concept of EPC was put forward. Every item in the world was uniquely identified.

Form of RFID tags

The basic RFID tags system consists of three parts:

Tag: It is composed of coupling elements and chips. Each tag has a unique radio frequency coding. High capacity radio frequency tags have storage space that users can write into and attach to the object to identify the target object.

Reader: A device that reads (and sometimes writes) label information can be designed to be handheld type or fixed type.

Antenna: Transmits radio frequency signals between tags and readers.

Characteristic of RFID tags

Data storage: Compared with the traditional form of tags, the capacity is larger (1 bit - 1024 bit), and data can be updated at any time, and it can be read and written.

Speed of reading and writing: Compared with barcode, it does not need straight line alignment scanning. It has faster speed of reading and writing, and can recognize multiple targets and recognize in motion.

Easy to use: small size, easy package, and can be embedded in the product.

Security: special chip, unique serial number, difficult replicate.

Durable: no mechanical failure, long life, harsh environment defense function.

Sensing effect: much better than usual

Core technology of RFID tags

Radio Frequency Identification (RFID) is a non-contact automatic identification technology. It automatically identifies target objects and acquires relevant data through radio frequency signals. It can work without manual intervention and work in various harsh environments. RFID technology can identify high-speed moving objects and recognize multiple tags at the same time, which is fast and convenient to operate.

Radio frequency identification tags are a breakthrough technology: "First, it can identify a single very specific object, rather than only one kind of object like bar code; second, it uses radio frequency, which can read data through external materials, while bar code must rely on laser to read information; third, it can simultaneously identify and read multiple objects, while barcodes can only read one by one. In addition, the amount of information stored is also very large. "

China Standard of RFID tags

The issue of RFID tags standards in China has always been the focus of attention at home and abroad. It is also the core issue of whether to promote the rapid development of China's RFID industry as soon as possible. It was learned at the working meeting of RF label standard working group held in Beijing on June 26 of 2006. After joint efforts in 2007, the Chinese RFID  tags group had put forward the three technical standards documents, that is, the basic electrical characteristics of 13.56MHz RFID, the specifications of 13.56MHz RFID reader and writer, and the physical characteristics of RFID tags.

Preparations for completion in 2008 include: 840-845 MHz, 920-925 MHz label standard draft, 13.56 MHz/radio frequency identification label basic electrical characteristics test method, 13.56 MHz radio frequency identification reader/writer test method, the physical characteristics test method standard draft of RFID tags.

Among various smart rfid tag manufacturers in China, Startrend can be your reliable RFID card manufacturer. We supply high-quality products at competitive prices!

近几年来，中国留学低龄化现象越来越明显，中学生出国留学呈快速增长趋势。根据美国《门户开放报告》，中国本科生人数连续多年超过研究生。

与此同时，越来越多的美国本科生倾向于早出校门。高中生出国留学的比例从2012年的17%上升到2015年的27%，超过三分之一的学生计划出国在高中或预备和语言学校学习。那么美国高中生留学的优势到底有哪些呢？下面就跟求真教育小编一起来看看吧。

　　1、高质量的启发式教育。引领学术好奇心，培养兴趣，鼓励并要求学生自己发掘、编排资料、撰写报告，勇于发表自己的观点，培养独立自主的学校习惯和能力。

　　2、高比例升入美国名牌大学。在同等条件下，美国高中留学生比国内高中学生更具备申请美国名牌大学留学的优势，也更容易收获一个好的申请结果。

　　3、高中有丰富多彩的课余活动。美国教育模式中，重视培养学生的课外活动能力，因此自然会给学生安排丰富的课外活动，比如运动、文艺、艺术、演讲、辩论、社区服务等活动。

　　4、会给你更早的人生和职业规划。在美国高中留学的人会发现，学校不会将标准化成绩当做教学的唯一重点，会更早的鼓励学生对自己的人生进行规划，让学生对自己的未来有一个明确的认识。

　　5、让你拥有独立自主的成熟人格。美国高中留学生的年龄都还比较小，因此更容易锻炼自己的独立生活能力，塑造自己乐观积极、有责任感、健康的人生价值观。

1. Amine curing agents

W(mass fraction of amine curing agent required for 100 mass fraction resin)/%=(amine equivalent/epoxy equivalent)*100 mass fraction resin=(molecular weight of amine*100 mass fraction resin)/ (number of active hydrogen atoms in amine molecule*epoxy equivalent=(molecular weight of amine/number of active hydrogen atoms in amine molecule)*epoxy value=(molecular weight of amine/number of active hydrogen atoms in amine molecule)*(percentage of epoxy matrix/epoxy group molecular mass)

2. Calculating the dosage of low relative molecular weight Polyamide

Amine value is often used to measure the number of amino groups in the specification of polyamide products in low relative molecule, which can not correctly reflect the number of active hydrogen atoms. Therefore, the amine value can not be simply used as the basis for epoxy hardener calculation. For typical polyamides, the following formula can be used to calculate the dosage.

W(polyamide)%=(56100/amine value*f)*epoxy value n-3

3. Calculating the dosage of ketoimide

W(ketoimide)%=(curing agent equivalent/epoxy equivalent)*100

"Equivalent" here means that ketimine reacts with water at the same time.

As a professional epoxy hardener manufacturer, Jiaxing Nanyang Wanshixing Chemical Co. Ltd covers an area of 4 acres with more than 60 employees. We have four advanced production lines and our annual production capacity is 30000 tons, is the largest manufacturer of MTHPA products in China. We sincerely invite and welcome people from all around the world to invest and create more values together.

The skid mounted compressor can be used in accordance with the strict use process during daily use, which can completely reduce the loss. There are a few points to note. I hope that the majority of compressor users can pay attention.

1. When the skid mounted air compressoris cooled, it is necessary to clean the impurity mixture in time, at least once every two hours.
2. In the process of using the skid mounted air compressor, if there is a supply problem in the cold water, it must be stopped immediately and stopped.
3. Before the compressor is used, the cooler and cylinder water jacket are first filled with water.
4. The cylinder water jacket needs to be completely cooled to enter the water, otherwise there will be cylinder damage.
5. When the water jacket enters the cooling water, a professional water tank needs to be placed inside, and the measuring equipment is installed on it. When the water level falls below the limit, it can be found in time when problems occur.
6. When draining, the open drain must be used. The drain temperature should not exceed 10 °C-15 °C compared to the inlet water temperature.
7. To avoid an explosion caused by pressure overload, a safety valve must be installed on the compressor.
8. When the compressor is decompressed by air, install a device such as a pressure reducer.
9. The air must be guaranteed to be dust free.
10. During the maintenance inspection, avoid impurities falling into the cylinder, causing late failure.
11. Do not use gasoline or other substances in the cleaning cylinder. It needs to be cleaned with professional kerosene.
12. After the cleaning is completed, the compressor needs to be completely opened to allow the kerosene to evaporate.
13. When using the compressor, the outlet position should be avoided.
14. The installation of the skid mounted air compressorconnecting pipe should be arranged according to the running time of the equipment.
15. Keep away from the flammable, explosive, toxic gas production environment and safe production.

ABT Drilling Equipment Co., Ltd. mainly provides holistic drilling solutions, serving the mining, stone crushing, water conservancy drilling industry, abt machine tools , to help you solve the problem of drilling at high efficiency and low cost. We mainly provide mobile air compressors, drilling rigs, hammer, drill bit, crushers, underground water detector.We are your trustworthy partner.RFQ today!

United In God Living Water International

(Flaming Sword Ministry)

If you ever want to be Free You Got to Hear Something…..

The Kingdom Spiritual Builder Community

Kingdom Hot Spot

Spiritual Sound Bites

Come Develop Your God Conscious for purpose power of authority in the right direction of life in living

I Guarantee You Shall Not Lose Pace in the Grounding

Because God Is Coming To Put You In The New Place Of Life In Living

Come Now…..

IT’S THE FINISH WORK

Spirit Title:

The Intercessor Call

#HeedTheCall

#TheCallIsKingdomCome

There is nowhere the Kingdom of God is Not!

The Redeemer Lives to Save and Deliver from the thief that comes to kill steal and destroy your life in God.

#FaithofLife 

#TruthToEternity

Truth to Eternity is found in seeking higher ground in living

I guarantee when you hear the Finish Work of The Spirit Teaching, you will know

“The Intercessor Call”

There is nowhere the Kingdom of God is Not

What are you setting up on Earth for the Master use?

What generation are you setting up today?

How shall they hear of the God high above all the Heavens, who created all life, if you are making a mockery out of God’s Holy Word, in not truly living the life?

How will they know The I AM, if they do not see HIM working in the older generation who are here to teach the younger

The Intercessor Call is bringing you to God that shall give you testimonies of God’s truth of life in living

And the Testimonies will keep you coming to God for life of Christ in living

“The Intercessor Call”

In the Call There Is…….

Brokenness

God’s Breaks to Righteously Bless

Holiness

God draws us into HIM who is Holy, if you are not drawn, you will be driven to call on help from the Lord

Heaven

God Keeps us focused on the Kingdom Life in Living

The Prophet/Prophetess focus is not where you are

The Prophet/Prophetess focus is where you were in God, before you came to where you are

Hell

God sends HIS Word to deliver us from Hell; the path of destruction is Hell

God pulls us out of Hell by HIS Holy Word

Psalm 107:20; He sent his word, and healed them, and delivered them from their destructions.

Living Truth is Truth Living

Come Experience the Living Truth

The Difference Maker Link

https://www.evangelistphyllisjackson.com/the-intercessor-call.html

 Help us go to help others who desire to be Free….

The knowledge is Free, The Travel Cost, but it’s the Power that comes to Transform Lives

We are grateful

Come Support/Sponsor the Kingdom

Have a Heavenly Life

Shalom Blessings,

Phyllis Jackson Hamilton

Email:  phyllis33jackson@yahoo.com

Mobile:  832-356-7724

The RFID system composed of RFID tags, reader, antenna and application software is directly connected with the corresponding management information system. Every item can be tracked accurately. This comprehensive information management system can bring many benefits to customers, including real-time data acquisition, secure data access channels, off-line access to all product information and so on. In foreign countries, RFID technology has been widely used in many fields such as industrial automation, commercial automation and so on. Application ranges include: as a data carrier, RFID tags can play the role of identification, things tracking and information collection. In foreign countries, RFID tags have been applied in a wide range of fields.

1. Anti-counterfeiting: Through scanning, detailed logistics records are generated.

2. Production Line Management

RFID tags can record process information and process operation information conveniently and accurately in production line to meet flexible production requirements. The traceability of production can be fully realized by recording the worker's work number, time, operation and quality inspection results. It can also avoid errors caused by handwritten and visual information in the production environment.

3. Warehousing Management

The application of RFID system in intelligent warehouse goods management effectively solves the warehouse goods information management. For large warehousing bases, the management center can understand the location of goods, goods storage at that time. It is very important to improve warehousing efficiency, feedback product information and guide production. It not only increases the number of items processed in a day, but also monitors all information about the goods. Among them, there are various forms of applications. For example, labels can be attached to cargo, read and write by the reader on forklift truck and the reader at the corresponding location in warehouse, and barcode and radio frequency labels can be used together.

4. Sales Channel Management

It is a strong need for many enterprises to establish strict and orderly channels and manage the purchase, sale and storage efficiently. RFID tags are embedded in the production process, which contain the only product number. Manufacturers can monitor the flow of products with the identifier. Wholesalers and retailers can identify the legitimacy of products with the reader provided by the manufacturer.

5. Valuable Goods Management

It can also be used for cameras, videos, portable computers, CD walkman, jewelry and so on. It can guarantee antitheft, settlement and after-sale of valuables. Its anti-theft function belongs to the radio frequency item monitoring system (EAS). Labels can be attached or embedded in the package. Specialized shelf scanners scan goods in real time to obtain real-time inventory records. If the goods are taken away from the goods shelves, the system will verify the legality of this behavior. If the goods are taken illegally, the system will alarm.

When the purchase order is released from the warehouse, all items of different categories can be scanned by a scanner at one time, and the anti-theft function can be removed while the sales order is generated at the cash register. In this way, the alarm will not go off when the customer leaves with the goods he has purchased. When the customer pays the bill, the cash register will write the date of sale into the label, so that the goods purchased by the customer are also guaranteed and promised accordingly.

6. Library Management and Leasing Product Management

Attaching RFID tags in books can conveniently make them receive book information and organize books without moving books, which can improve work efficiency and avoid work errors.

7. Others such as logistics, car theft prevention, air parcel management, and so on.

As one of the most professional smart card and rfid tag manufacturers, Startrend works to supply high-quality smart rfid tag to our customers. If you are interested in our products, please contact us!

现如今低龄留学已经成了近些年来的大热趋势，越来越多的家长希望自己的孩子能有更好的发展，愿意把孩子送到国外读中学，今天求真教育专家就跟大家一起了解一下美国高中生留学攻略。

　　美国低龄留学申请条件

　　1、申请者的年龄限制

　　美国高中是9-12年级，相当于国内的初三至高三。因此，国内初二至高二在读的学生均可申请入读美国高中。一般来说，美国高中对申请者年龄的最低要求是14岁。

　　2、需要英语成绩

　　去美国读高中，一般比较常见的英语考试有托福、雅思、SSAT等，SSAT是Secondary School Admission Test的缩写，中文名称为美国中学入学考试，适用于美国、加拿大私立中学的入学，是申请者所必须具备的一个考试成绩。

　　还有一种英语标准化考试不太常见：SLEP是中学英文程度测验(Secondary Level English Proficiency Test)的缩写，美国90%的私立中学都用SLEP的成绩来决定新生是否需要ESL的课程以及不同等级。

　　3、GPA要求

　　美国高中一般的学术要求在校平均成绩在80分以上，好的私立高中，要求平均分在90分以上，或在全年级排名前10名。想要申请好高中的同学，在国内的学习成绩也要好好保持。

　　4、学校面试

申请美国高中留学，基本上都需要面试。面试一般分为现场面试、电话面试以及视频面试。现场面试一般需要1小时左右。电话和视频面试一般需要20-30分钟，招生官会根据学生面试的情况来决定面试时长。学校通过面试来评估学生的综合能力。

1. Many customers do not want to stock up based on price or cost issues. They are all doing a maintenance. However, skid mounted compressormaintenance time and parts inventory often cannot match. There may be a phenomenon of out of stock and goods transfer. The machine's new machine running-in period is 500 hours. Regular maintenance is once every 2000 hours.  Maintenance time is often unequal. The machine maintenance time is extended due to the problem of the delivery date of the parts, which ultimately affects the service life of the machine. This is not worth the candle. Therefore, when you are able to buy a new machine or when you are in the first place, you can prepare one or two sets of maintenance kits, so that the supply is sufficient when the machine is being serviced.
2. Skid mounted compressoris sometimes a little problem. The common ones are: high temperature, oil leakage, aging of accessories. These problems are coming urgently. Although it is a small problem, it does not solve the problem and affects production. Although the factory staff will come at the fastest speed, but can not solve the problem immediately. For example, high temperature may be caused by less oil, or it may be a problem with the temperature-controlled valve core; for example, the belt ages and breaks, causing the skid-mounted compressor to stop.  If the customer has spare parts such as lubricants and belts at the time, then the problem can be solved in the first time.

Shenyang Anbit mechanical and Electrical Equipment Co., Ltd. welcome your inquiry!

ABT Drilling Equipment Co., Ltd. mainly provides holistic drilling solutions, serving the mining, stone crushing, water conservancy drilling industry, abt machine tools , to help you solve the problem of drilling at high efficiency and low cost. We mainly provide mobile air compressors, drilling rigs, hammer, drill bit, crushers, underground water detector.We are your trustworthy partner.RFQ today!

What is epoxy hardener?

The epoxy resin itself is a thermoplastic linear structure. After heating, the solid resin can be softened and melted into a viscous or liquid state. The thermal viscosity of liquid resin decreases. Only when curing agent is added, epoxy resin can be used practically.

Composition of epoxy resin

1. Resin Composition

(1) Epoxy resin: Main component of resin composition, Bisphenol A epoxy resin and other types of epoxy resin

(2) Curing agent: reacting with epoxy resin to form three-dimensional network polymer compounds

1. Modified components

(1) Plasticizers: Plasticizers give flexibility, but reduce heat resistance and drug resistance.

(2) Toughening agent: improve impact resistance, and make other properties reduced little, such as liquid acid carboxylated rubber

(3) Filler: increase weight, improve solidification, mechanical, thermal and electrical properties, such as calcium carbonate, mica, etc.

1. Regulating fluidity components (1) Dilutants: reducing the viscosity of components, which are divided into active diluents and inactive diluents. Thixotropic agent: give thixotropy to components, such as asbestos, silicon powder, etc.

1. Other ingredients: pigments, solvents, defoamers, levelers, tackifiers, etc.

Epoxy hardener chemistry can be widely used because of the combination of these components. Especially curing agent, once the epoxy resin is determined, curing agent plays a decisive role in the technological properties of epoxy resin components and the final properties of curing agent products (products). Epoxy resin itself is a linear structure of thermoplasticity. It can not be used directly. A second component must be added to the resin. Under certain temperature (or humidity) and other conditions, epoxy group of epoxy resin is used for addition polymerization or catalytic polymerization to produce cured materials with three-dimensional network structure (bulk network structure). This compound or resin, which acts as the second component, is called curing agent and is divided into additive curing agent and catalytic curing agent.

Curing agent:

1. Normal temperature curing

Heavy-duty anticorrosive coatings; Civil building adhesives; Civil building coatings; FRP; General binders.

Straight chain aliphatic polyamines, polyamides, alicyclic polyamines, denatured polyamines, polymercaptan

1. Heating curing

(1) Electrical insulating materials: acid anhydride, imidazole compounds, BF3 complex.

(2) Laminating materials: Dicy, aromatic polyamines, linear phenolic resin.

(3) Coatings (Tank: Amino Resin, Phenolic Resin, Powder: Dicy, Aromatic Polyamines, Anhydride).

(4) Molding material: linear phenolic resin.

(5) Binders: Aromatic polyamines, anhydrides, imidazoles, BF3-complexes.

As a one of the most professional epoxy resin and hardener manufacturers, Jiaxing Nanyang Wanshixing Chemical Co. Ltd covers an area of 4 acres with more than 60 employees. We have four advanced production lines and our annual production capacity is 30000 tons, is the largest manufacturer of MTHPA products in China. We sincerely invite and welcome people from all around the world to invest and create more values together.

RFID tags refer to radio frequency identification tags. After the radio frequency identification system is matched with the reader and tag, data communication can be realized by radio waves. The relevant information is stored in the tag in electronic digital format.

Like barcode, RFID tag is also a data carrier. The data contained in the RFID tag can be assembled into a minicomputer chip through various radio frequency operations. Such tags are usually activated by radio waves, which are emitted from an RFID reader.

The reader can communicate with the tag via wireless network through antenna. The tag is bound to the target. This technology is called air-interface.

The passive tag is not equipped with battery power supply. The tag is activated by reading the electromagnetic wave in a specific frequency and wavelength range. The electromagnetic wave is sent by the antenna. The tag can send the item-related data stored in its memory back to the reader. Such data can be used internally or by different agencies and trading partners, and data security can be ensured.

Some applications of RFID technology include: safety applications, warehousing and inventory goods, livestock management, vehicle import and export control in parking lots, book and library management, pharmaceutical and experimental analysis, authority control, vehicle identification, import and export control in dangerous areas.

Traffic companies have also been tagging vehicles to identify them when they arrive. The label information will be sent to IT system, which involves yard management, improving the efficiency of vehicle management. RFID solution can also be used to check the correctness of the correlation between trailers and tractors.

Trailer tracking system can also provide important information to trailer operators, covering status, location, door activity and historical records. Such systems can use information to provide reliable protection services to shippers of perishable commodities.

Although different types of rfid tags can have different reading speed, the reading rate of RFID tags is higher than that of barcodes in baggage handling applications. This kind of technology is used for passenger identification after registration card so as to ensure the safety of passengers.

现在有着很多的家长在孩子上高中的时候就会将自己的孩子送到国外去留学。因为美国留学的要求是非常严苛的，所以提前去留学提前适应是个非常好的选择。当然就跟国内的情况一样，肯定是会出现一些不适应的地方，这时候就有一个问题，美国高中转学行不行?当然可以了，今天求真教育小编为大家整理了美国高中转学要求。

　　一、年级要求

　　美国高中是四年制9-12年级，大部分学校都不接受12年级的转学，因为美国高中很看重学生在11年级和12年级的学习和活动参与，老师会通过学生的表现了解学生的具体情况，方便指导其大学的申请，并提供推荐信，而且高中的课程基本在12年级的上学期就结束了。如果学生12年级转学的话，老师很难再短时间内了解学生的情况，学校也无法提供毕业证书。所以如果有转学的想法，还是趁早下决定。

　　二、监护人要求

　　由于就读高中的学生还处于未成年阶段，美国法律有相关规定，学生必须在美国有合法的监护人。有的学校会要求家长在美国陪读；有的学校也可以担当监护人的角色，但学生需要住在学校里面；家长也可以选择美国的亲戚朋友、寄宿家庭作为孩子在美国的监护人。

在美国读高中的学生年龄还比较小，需要面临很多的困难和挑战，如果父母在身边会给孩子提供安全感，有任何突发情况，父母也能够及时处理，所以有条件的话家长可以去陪读。如果孩子是住在寄宿高中的话，父母需要定期与孩子沟通，时常关注孩子心理的变化，帮助孩子解决学业压力和社交压力。如果住在寄宿家庭的话，家长可以提前了解好寄宿家庭的状况，密切关注孩子入住之后的生活。

1. Theunderground jumboneeds to be ready for the following installation work:

(1) Installation site. Depending on the size of the trolley, it is necessary to leave the stacking and installation site, generally 20m x 20m;

(2) Sleepers and rails.

(3) Lifting equipment. When installing the gantry for most trolleys, it can be installed directly by the existing excavator or loader on the construction site. However, when installing the upper gantry and formwork, it must be installed with a crane of 16 tons or more;

(4) There are a total of 6-8 installation assistants. Generally, the trolley service is installed by the after-sales service personnel of the manufacturer;

(5) The welding machine and the gas cutting device are the connecting parts for processing the reinforcing parts during the transportation of the trolley;

(6) The board generally requires more than 5cm thick and is used for the mounting and operating platform.

2. How to determine theunderground jumbocenterline?

When underground jumbo is positioned, the center line of the trolley must be determined first.  The way to determine the center line is simple, with a positioning cross at the top center. The intersection point is the midpoint of the trolley that the manufacturer has set up in the production of the trolley. By passing this point and drawing the vertical line of gravity, the center line of the trolley can be found.

3. How to measure the section size of the underground jumbowhen the jacking cylinder is designed below?

When the jacking cylinder is designed below, it is not easy to measure the widest point of the trolley because the cylinders on both sides hinder the direct measurement of the measuring tool.  A horizontal line can be drawn on the trolley template, and the height of the two sides can be consistently matched by a tool such as a level gauge, and a rod (such as a thin thread steel) can be welded, and then the width of the section can be obtained by measuring the lead rod.

4. How to position theunderground jumbo?

Before the lining work of the underground jumbo, the trolley must be positioned so that the profile size of the trolley conforms to the required size. After the trolley walks to the section to be lined, it is positioned by the following actions:

(1) Adjust the center line of the trolley by operating the translation cylinder of the hydraulic system to align it with the centerline of the tunnel;

(2) Operate the hydraulic system jacking cylinder to raise the trolley to the standard lining height, and then tighten the foundation jack, then review the height dimension;

(3) Operate the hydraulic system so that the lateral cylinder piston rod extends and reaches the standard lining section, and then manually pulls the lateral support screw to make it reach the lateral cylinder support position and tighten;

(4) After completing the above actions, the section size should be reviewed to prevent errors.

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Is epoxy glue heat resistant?

1. Epoxy resin AB adhesive classification: can be divided into epoxy resin filling adhesive, epoxy resin thermal conductive adhesive, epoxy resin sealant, epoxy resin high temperature adhesive, epoxy resin fast-drying adhesive.

2. Heat resistant epoxy glue is a fast curing series, clear and viscous epoxy resin adhesive. It can be cured at low or normal temperature with fast curing speed. After curing, the bonding strength is high, the hardness is good and the resistance is good. After curing, it has good acid and alkali resistance, moisture-proof, waterproof, oil-proof and dust-proof functions, moisture-heat resistance and atmospheric aging resistance. After curing, it has excellent electrical and physical properties of insulation, compression, bonding strength. So how high temperature can the epoxy resin AB resist? For different product processes, the temperature resistance is also different, 100 degrees, 200 degrees, 300 degrees, 1000 degrees and so on.

Jiaxing Nanyang Wanshixing Chemical Co. Ltd covers an area of 4 acres with more than 60 employees. We have four advanced production lines and our annual production capacity is 30000 tons, is the largest manufacturer of methyltetrahydrophthalic anhydride in China. We sincerely invite and welcome people from all around the world to invest and create more values together.

When you choose a wardrobe, you will inevitably encounter the choice of color, so how to choose the color of the wardrobe with the bedroom? Let's take a look at how the color of the wardrobe matches with that of oppein.

1. Bedroom environment

Combination of wardrobe color and bedroom color. You can choose closets with similar colors according to the color of the bedroom floor, or the color of the closets you choose should be matched with the color of the bed. It should be noted that the warm color system and the cold color system should be properly matched to avoid big differences in the color of the bedroom, which is abrupt.

2. Bedroom decoration style

There are many styles of large wardrobe, so when matching with different decoration styles, you can match from the color. If it's European style, the decoration is more gorgeous, you can choose the light color of white and dark color of apple wood wardrobe. If compare the style of modern vogue, it is the color that uses white as wardrobe commonly. The pastoral style mostly uses the local flavor elements such as broken flowers, stripes and Scotland. The wardrobe is mainly composed of black, white, gray and so on. You can also choose the wardrobe with pastoral style.

3. Orientation of bedroom

If the light in your bedroom is very good, it's easier to choose the color of the wardrobe. But don't choose too many reflective metal or glass closets to avoid the interference of too much flowing light on people's vision; if the lighting and ventilation of the bedroom door are poor, it's better to choose light color closets, such as white, beige, light pink, etc. The wardrobe should be placed in the dark corner of the wall as far as possible, not next to the window or bedroom door. This will prevent the wardrobe from blocking the light and make the bedroom darker.

4. Personal preferences

Of course, you can also choose the color of the wardrobe according to your own preferences, which can make the bedroom more personalized, but it should be noted that the color matching should not be too exaggerated and jumping, which is easy to cause visual fatigue.

With the continuous development and updating of technology, the advantages of RFID products will be widely used in more fields. Nowadays, RFID tags have been integrated into our modern life, occupying a place in the world's top ten anti-counterfeiting technologies. From the radio frequency anti-counterfeiting traceability system of Maotai, Chinese liquor, to the daily radio frequency non-stop toll management system, there are numerous examples. What are the advantages of RFID tags? As one of the most professional smart rfid tag manufacturers, Startrend has years' experience in producing different types of rfid tags. And here we'd like to talk about its advantage and help you to choose a good RFID tag.

First, better security: it can not only be embedded or attached to products of different shapes and types, but also can set password protection for reading and writing of the label data, so it has higher security.

Secondly, tag data can be changed dynamically: the data can be written by programmer, thus giving the function of interactive portable data file, and writing time is less than that of printing barcode;

Third, dynamic real-time communication: tags communicate with the interpreter at a frequency of 50-100 times per second, so as long as the object attached to the RFID tags appears in the effective identification range of the interpreter, its position can be dynamically tracked and monitored.

Fourth, the recognition speed is fast: once the tag enters the magnetic field, the interpreter can read the information in it instantly, and can process multiple tags at the same time to realize batch identification;

Fifth, large data capacity: 2-D barcode with the largest data capacity can only store 2725 digits at most; if it contains letters, it will have less storage; RFID tags can be extended to tens of kilograms according to the needs of users;

Sixth, it has a long service life and a wide range of applications. its radio communication mode enables it to be used in highly polluted and radioactive environments such as dust and oil pollution, and its enclosed packaging makes its service life much longer than that of printed bar codes.

Seventh, easy and fast read: data can be read without light source, even through the outer packaging. Effective recognition distance is larger. When active tag with battery is used, the effective recognition distance can reach more than 30 meters.

送孩子去美国就读相关的艺术院校已经成为近年来很多家长的选择。美国的艺术院校拥有一流的师资力量，底蕴深厚，家长们都愿意通过赴美就读艺术院校，给孩子的将来加分。

那关于美国艺术申请，大家肯定也会关心究竟在什么时间点申请会更好，今天求真教育小编就跟大家来说说美国艺术院校申请的时间准备。

　　美国院校的申请一般全部为网上申请，在Common Application的网站上统一申请，非常方便。那么，申请美国的艺术院校一般都需要准备什么东西呢？

　　作品集portfolio（不同专业的作品集要求有时候会有所不同）

　　语言（托福）+SAT/ACT（有的学校SAT是optional的）

　　个人陈述（personal statement）

　　各个学校申请题目（如RISD，Parsons都会有半命题Assignment要求申请的学生完成）

　　推荐信（有的学校是optional）

　　使用Common Application上传资料/填写申请表online application/高中成绩单/交申请费等

下面我们来看一些院校的申请截止日期，大部分院校都集中在1月和2月截止申请。美国有提前申请，一般录取率高一些，分EA（Early Action）和ED（Early Decision）两种。

EA可同时申请很多所学校，录取后可以再决定是否去。ED只能申请一所，申请到了就必须去，否则需要缴纳违约金，所以一般建议ED一定要申请Dream School。不是所有学校都有EA或者ED的申请选择。