Square tube commonly used in various building structures and engineering structures such as beams, bridges, transmission towers, material handling equipment, ships, industrial furnace, reaction tower, container frame and warehouse shelves and other construction steel - square tube in the construction industry plays a very important role, the majority of builders and building materials has always been a topic of concern. Many of square tube defects resulting in perforation, so the tube power transfer process is the production of a key square tube procedure.
Many of square tube defects resulting in perforation, so the tube power transfer process is the production of a key square tube procedure. Perforation main difficulty lies in the low alloy high perforation performance, when necessary in order to ensure the quality of the deformation parameters of rational choice perforation. Small amount of compression will cause perforation process is unstable, so the critical amount of compression former child should head the amount of compression is generally set at about seven percent, otherwise it will not bite, even before moving to increase or card. Increasing the amount of compression of the front of the plug will form the inside of the bore and Chen Sheng defects. So if you want to overcome the problem, then the tube also centering, centering empty and depth to compare based on other steels.
News source: http://www.hnssd.com/news.asp?type=1&id=817
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