Novel black stainless steel strip rolling process and unit

Abstract

Disclosed is a novel black stainless steel strip rolling process. The novel black stainless steel strip rolling process comprises the following steps of uncoiling a steel coil, straightening the head portion and the tail portion of the steel coil, cutting off unqualified strips and then welding the head portions and the tail portions of strips through a welding machine; feeding the strips into an entry loop through 1# tension rollers; after the strips are output from the entry loop, feeding the strips into an eighteen-roller continuous rolling unit via 2# tension rollers for continuous rolling, and rolling the strips into cold-rolled strips of a required thickness; then feeding the cold-rolled strips into an outlet loop sequentially via a cleaning and drying unit and 3# tension rollers, and after the strips are discharged from the outlet loop, feeding the strips into a recoiling machine sequentially via 4# tension rollers and a slitting shear; when the rolling diameter of the strips reaches a required value, slitting the strips at the slitting shear. According to the technical scheme of the novel black stainless steel strip rolling process, black stainless steel strips are directly rolled and then fed into a stainless steel hot-pickling and annealing line; due to the fact the thickness of the strips is reduced before the strips are fed into the stainless steel hot-pickling and annealing line, stainless steel strips of small specifications, which can be produced through multiple rolling processes, can be obtain within one rolling process, and further the production cost can be greatly reduced, and the production efficiency can be improved.

Description

technical field [0001] The invention belongs to the field of rolling equipment. Background technique [0002] The traditional stainless steel production process is that the stainless steel black belt is first annealed and pickled by the annealing and pickling unit to the stainless steel black coil, the strip is softened by annealing, and the oxide layer on the surface of the strip is removed by pickling. The strip (white skin) after annealing and pickling is rolled through multiple passes by the cold rolling mill to reach the thickness of the finished product. Some thinner specifications often require intermediate annealing and pickling before cold rolling to reach the thickness of the finished product. The strip that has reached the thickness of the finished product is then passed through the finished product annealing and pickling unit to produce the finished product with the required performance requirements. The traditional stainless steel cold rolling production proces...

AI Technical Summary

Problems solved by technology

The traditional stainless steel cold rolling production process is long, the process is complicated, and the production cost is high

Especially when producing thin strips, multiple rolling passes are often required, resulting in high production costs

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