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Cold pressing is to press the oil directly in the oil press without heating after the oil is screened and cleaned. It is difficult to press the oil thoroughly in such a way at one time. The oil cake still contains oil. Sometimes they are needed because they contain less oil but are not completely free of oil. The advantage of the cold press is that the color is light. When the oil is pressed, there will be no foaming or silting pot. The color is beautiful. The downside is that the oil is not aromatic, and it takes more than twice to press it clean.

The oil press is used when the oil has not been heated or in low temperature before the oil press. The extracted oil is of low temperature and low acid value. In general, no refining is required. After precipitation and filtration, the refined oil can be obtained.

When using the cold oil expeller, the workers must select raw materials carefully. Otherwise, the quality of the cold oil extraction will be seriously affected by the different maturity of the raw materials and the harmful substances contained in the raw materials (such as aflatoxin in the mildew oil and gossypol toxin in cottonseed).

Cold drawn oil has is natural, avoiding the adverse effects of traditional high-temperature oil extraction. The cold-pressed oil retains the natural flavor and color of the oil, completely preserves the physiologically active substance in the oil (vitamin E has the anti-aging function, the sterol has the effect of strengthening the skin and enhancing the metabolic function of the human body). The cold-pressed oil, with the original taste and flavor, is a good choice of healthy life.

Cold press oil expeller is the core equipment of cold pressed extraction. Cold pressed oil is such an oil technology that the nutritive value, the unchanged molecular structure of the oil and the cake were obtained by pressing oil at room temperature to 65℃ without rolling or steaming.

Cold press screw oil extractor can be divided into three parts: the main engine, the automatic feeding device, and vacuum filter.

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Cold forming is a new technology and new technology for metal sheet forming, material saving, energy saving, and high efficiency. By using this process, not only can high-quality steel products be produced, but also the cycle of product development can be shortened and production efficiency can be improved, thereby improving the market competitiveness of enterprises.

In recent years, cold-formed steel products have been widely used as important structural parts in many fields such as construction, automobile manufacturing, shipbuilding, electronics industry, and machinery manufacturing. Its products range from ordinary rails, doors and windows and other structural parts to special profiles made for special purposes. Cold-formed steel has better cross-sectional performance per unit weight than hot-rolled steel products and has a high surface finish and dimensional accuracy. Therefore, cold-formed steel can achieve the dual effect of saving steel and saving energy instead of hot-rolled steel.

The development of curved steel has been highly valued. It is the user's constant desire for the variety, specifications, and quality of cold-formed steel products, which has led to the rapid development of cold-bending forming technology.

On cold roll forming lines the stands are fixed on the machine basement, and if you need to replace the roll forming tooling, it is necessary to manually take down the rollers from the shafts.

If the profile change only involves a size change of the section (for example a width change), the rollers can be modified by re-positioning the C shape spacers without taking the rollers down.

The core part of the cold forming machine - the roll. It is the soul of cold forming, the design of the roll is extremely important, and the design features of the roll are as follows:

1. The average force principle of each pass of the cold-bending forming machine, the average roller of the whole line is subjected to the average force, the wear is balanced, and the service life of the roll is prolonged.
2. The material of the cold roll formingmachine adopts its wear resistance, but the specific strength and hardness are contradictory. The red hardness of C12MoV should be utilized during heat treatment, and the hardness can be achieved after two or even three times of tempering after quenching.