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Manufacturing and Testing of Hot Rolled 304 Stainless Steel Tubes

Date:2018-02-05    keywords:hot rolled 304 stainless steel tubes
1, Hot-rolled 304 stainless steel pipe(ss pipe) is generally produced on the initiative of rolling units. The solid tube is examined to eliminate appearance defects, cut to the required length, center on the end surface of the tube perforation end, and then sent to heating furnace heating, perforation in the piercing machine. In the continuous rotation with the perforation and travel, the effect of the roll and the head, the tube gradually form a hollow interior, said capillary. Then sent to the active rolling mill continuous rolling. After the whole machine by the whole wall thickness, sizing, to meet the regulatory requirements. It is a more advanced method to produce hot-rolled seamless steel pipe by using continuous pipe mill.

2, If you want to obtain smaller and better quality seamless pipe, you must use cold-rolled, cold drawn or a combination of both. Cold rolling is usually carried out on a two-roll mill. The steel is rolled in an annular groove of variable cross-section circular hole and an immobile tapered head. Cold drawing is usually carried out on a single or double chain cold drawing machine of 0.5 to 100T.

3, Kneading act will heat a good tube on a closed kneading cylinder, perforated rods and kneading rod together with the movement, the kneading pieces from the smaller die hole in the extrusion. This method can produce smaller diameter steel pipe.

Such pipe can be divided into 304 stainless steel pipe and stainless steel welded pipe (seam pipe) two categories, according to the different production process can be considered: hot-rolled, kneading, cold-drawn and cold these basic types, according to the cross-section shape can be divided into round pipe and shaped pipe, widely used circular pipe, but there are some square, rectangular, semi-circular, hexagonal, equilateral triangle, octagonal shaped 304 stainless steel tube.

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