Rolling method for enhancing ferritic stainless steel surface wrinkling resistance

A stainless steel and wrinkle resistance technology is applied in the rolling field to improve the surface wrinkle resistance of ferritic stainless steel. Improved wrinkle height and uniform grain size
CN104911318AActive Publication Date: 2015-09-16UNIV OF SCI & TECH BEIJING
4 Cites 10 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
UNIV OF SCI & TECH BEIJING
Publication Date
2015-09-16

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a rolling method for enhancing ferritic stainless steel surface wrinkling resistance. The rolling method comprises the steps of: 1) conducting hot rolling treatment on the casting blank; 2) conducting annealing pickling on the hot rolled steel sheet; 3) conducting cold rolling on the hot-rolled annealed and pickled steel sheet by an asynchronous rolling way, and controlling the total rolling reduction and cold rolling; and 4) conducting annealing treatment on the steel sheet obtained from asynchronous cold rolling by using a reasonable annealing process system. Through the above process, the surface roughness Pa and the maximum wrinkling height Pt of the steel sheet are improved substantially; and the method is quite effective in improving the surface wrinkling of medium-chromium series ultra-pure ferrite stainless steel, which is supplemented with Nb and Ti stabilizing elements and contains about 16% of Cr.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a rolling method for improving wrinkling resistance on the surface of ferritic stainless steel. technical background

[0002] Ferritic stainless steel generally does not contain nickel or only contains a small amount of nickel. It is a nickel-saving stainless steel. It has low cold hardening tendency, large thermal conductivity, small linear expansion coefficient, and excellent stress corrosion resistance. It is used in kitchen equipment, automobiles, etc. Industry, power-on products, electronic equipment and other fields have a wide range of applications and broad development prospects. However, compared with austenitic stainless steel, its formability is poor, especially the surface wrinkling is serious, which seriously affects the aesthetic quality of the product, so its use is sometimes greatly limited.

[0003] There have been several theories about the wrinkling defects and causes of ferritic stainless steel processing: ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More