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Stainless steel reducer: crack control technology in the production process

Stainless steel reducer production is mainly by suppressing is given priority to, however, according to many years experience, to suppress this kind of method can make the hardness and density change, just now if not heated, it will be very easy to produce cracks, therefore, many manufacturers and beat my brains (out).

Actually, we only need to be control of variable diameter range, in general, a processing stainless steel reducer range within level, for example, the size of the 325-129 reducer, need after several times of the heat treatment, you need to take 325 tubes to suppress a head, the aperture of the compressed into 325, 273, after the pressing needs after heating, the second variable diameter is 273 variable diameter 219 process, this time also need the tube heated to the specified temperature, then pressed, then the process of variable diameter 219 into 219, every variable diameter is needed after heat treatment.

Each will have their own material hardness and tensile strength characteristics, due to these characteristics it is destined to each kind of material suppression strength are not the same, the same type of stainless steel reducer, the material is different processing methods and procedures will also vary widely, ordinary carbon steel heat treatment after three times the size of the head will be forming, that’s the number of the size of the alloy material hardness, the greater the head pressing and heating will have, the more the number of forming process can be more complicated.

Source: Yaang Pipe Industry Co., Limited (www.yaang.com)

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