Steel tube precision rolling process principle

Precision stainless steel tube is a kind of steel tube with extremely high requirements for dimensional tolerances, wall thickness uniformity and wall smoothness; mostly used for mechanical parts and industrial fields; many people do not have much knowledge of the 304 precision stainless steel tube's processing process - finishing rolling, finishing rolling process: this is a kind of hot-rolling, hot-pressing and cold-drawing (rolling) of the Stainless steel tube. According to the different metallographic organization of stainless steel, mainly including half ferritic half Markov stainless steel tube, martensitic aging stainless steel tube, austenitic system stainless steel tube, austenitic iron system stainless steel tube and so on.

1, of which hot rolling refers to rolling above the recrystallization temperature of the metal, hot rolling can improve the machining process performance of stainless steel, the casting state of the coarse grains broken, significant crack healing, will also make the fine tube wall thickness to achieve uniformity of the effect;

2, hot pressing is a heated billet placed in a closed extrusion cylinder, perforated rod with the extrusion rod together with the movement of the burr pipe from a smaller Mold hole extrusion. The purpose is to make the diameter of precision stainless steel tubes smaller.3, cold drawing is usually carried out on a 0.5-100T single or double chain cold drawing machine, stainless steel tubes are drawn in the ring hole pattern composed of a variable section round hole groove and an immovable conical top head. The purpose is to make stainless steel fine tube size smaller and better quality.