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Polishing and shaping process of stainless steel pipe elbow
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PostPost subject: Polishing and shaping process of stainless steel pipe elbow
Posted: Wed Feb 14, 2018 6:26 am
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Generally speaking, there are three kinds of polishing processing technology for stainless steel pipe elbow, which are mechanical polishing, chemical polishing and electropolishing. Among them, there are three terms in mechanical polishing, need to understand, first of all, abrasive said stainless steel pipe elbow polish wax, eliminate the excess particles, so that the surface is very neat. The oil is said to be polished wax to make the elbow lubrication and cooling function, so that the surface of the tube has stearic acid, fatty acids and paraffin and other effective substances. The cutting force is the force required for the whole process of smoothing the polished stainless steel elbow.
When the stainless steel pipe elbow is placed for a long time, it is necessary to check and maintain it regularly. For stainless steel pipe elbows exposed outside of the parts, often need to ensure clean, remove dirt, keep clean, in addition, stainless steel pipe elbow should be placed in the indoor ventilation and dry place, can not completely stacked and exposed outdoors. Stainless steel pipe elbow itself ball valve, wafer check valve, gate valve use time, can only be fully open and fully closed, the middle can not adjust the flow over time can prevent the sealing surface from corrosion and wear damage, usually the valve and the valve on the screw contained within the inverted sealing for manual hand wheel rotation to the the upper head surface can achieve long-term rust free, no corrosion. In addition, the installation of adjustable stainless steel pipe elbow, it is necessary to maintain its sealing condition, otherwise it will lead to its inability to work properly.
There are two main types of forming process of stainless steel pipe, one of which is hot forming, hot forming process is the use of stainless steel pipe elbow bend drawing machine, mould and heating device, the set of billet in the mold on the forward movement in the push for the machine, and in the movement to be heated and expanded diameter and bending. The deformation characteristics of the hot pushing elbow is based on stainless steel pipe elbow plastic law of constant volume deformation before and after determining the tube diameter, tube diameter less than the diameter of the elbow, the deformation process of mould blank control, the metal flow in the arc compressed, compensation due to expanding and reducing other parts of thin thus, the uniform wall thickness of pipe elbow.
The other is a stamping, stamping of stainless steel pipe elbow is the earliest to forming process for the production of large quantities of seamless elbow, elbow now commonly used in the production of specifications have been replaced by hot method or other molding process, but in some specifications of the stainless steel tube bend in production quantity and the wall thickness is too thick or too thin. Before stamping, the stainless steel tube blank is placed on the lower die, the inner core and the end die are loaded into the tube blank, and the upper die moves downward to start pressing, and the stainless steel pipe bend is formed by the constraint of the external die and the supporting role of the internal model.
Source: China Stainless Steel Elbow Manufacturer - Yaang Pipe Industry Co., Limited (www.yaang.com)
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