For deep-drawing stainless steel deep drawing and difficult forming, in the actual production can use polyvinyl fluoride film to act as a lubricant. Polyvinyl fluoride film has excellent tear strength, a certain degree of toughness and elongation, and is easy to clean. After coating the dry film, the dry film can be deformed along with the blank during the drawing process, and the blank can be separated from the mold at all times. In addition, the film itself has a certain porosity and a large number of fiber cracks, so it is also possible to store a certain amount of lubricating oil, so the film The equivalent of a dry film lubricant. This lubrication method can effectively separate the deformed stainless steel plate from the surface of the mold, which has a good lubrication effect and is conducive to improving the service life of the mold and the qualification rate of the product.
There are also some other simple preventive measures such as the use of white cast iron as a blank holder, because the white cast iron oil storage performance is good, easy to form a lubricant film; for example, the use of tapered blank holder ring; In addition, the workpiece edge processing smooth The removal of micro-cracking gaps can also effectively prevent cracking. (This article consists of: 301 stainless steel belt)
Activated Carbon is a very small carbon particle with a large surface area, and there are even smaller holes in the carbon particle-capillary. This capillary has a strong adsorption capacity, because of the large surface area of the carbon particles, it can be in full contact with gas(impurities). When these gases(impurities) touch the capillary, they are adsorbed and act as purifiers. The study of the surface area of activated carbon is very important. The detection data of the specific surface area of activated carbon is only true and reliable by using the BET method. At present, there are many instruments in China that can only be detected by direct comparison methods. Now it is also in China. It was eliminated. At present, multi-point BET method is used for specific surface area testing at home and abroad. The specific surface area measurement standards formulated at home and abroad are based on BET test methods. See the Chinese National Standard(GB/T 19587-2004)-BET principle for the determination of the surface area of solid substances. The specific surface area detection is actually a more time-consuming task. Due to the different adsorption capabilities of samples, the testing of some samples may take a whole day. If the test process is not fully automated, the testers can not leave at all times. And to be highly focused, observe the dashboard, control the knob, and inadvertently lead to the failure of the test process, which will waste a lot of valuable time for the tester. The F-Sorb 2400 ratio surface area tester is an instrument that can truly achieve the BET method detection function(with a direct comparison method). The more important F-Sorb 2400 ratio surface area tester is the only fully automated and intelligent surface area detection device in China so far., Its test results are highly consistent with international standards and have good stability. At the same time, it reduces human error and improves the accuracy of test results.
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