Rolling method for austenitic stainless steel plate

A stainless steel plate and austenite technology, applied in metal rolling, metal rolling, manufacturing tools, etc., can solve the problems of low elongation, insufficient deformation, cracking, etc.

Inactive Publication Date: 2016-12-07
SHANXI TAIGANG STAINLESS STEEL CO LTD
View PDF9 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the unoptimized annealing and rolling process in actual production, the elongation rate of cold plate products is low, averaging around 52%
During the stamping process, users are prone to cracking and wrinkling, which is related to low elongation after analysis
The existing roll

Method used

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
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The mass percent of the ferritic stainless steel composition of the present embodiment is:

[0016] C: 0.045%, Si: 0.52%, Mn: 1.12%, P: 0.027%, S: 0.0040%, Cr: 18.19%, Ni: 8.07%, N: 0.043%, and the rest are Fe and unavoidable impurities;

[0017] Hot-rolled raw materials are pickled, the temperature of the annealed plate is 1127°C, the thickness of the plate is 2.5mm, and the production line speed is 53m / min; the pickling concentration of sulfuric acid is 278g / L, and the pickling temperature is 78°C; The pickling concentration is 30g / L, and the pickling temperature is 41°C. (nitric acid and hydrofluoric acid are mixed acids)

[0018] Cold rolling mill rolling process: the deformation rate of each pass is 23.02% for 1 pass; 19.2% for 2 passes; 16.9% for 3 passes; 15.9% for 4 passes; 14.2% for 5 passes; 13.1% for 6 passes; 12.7% for 7 passes; 12.2% for 8 passes; 11.0% for 9 passes; 8.5% for 10 passes. The rolling speed of cold rolling is 80m / min;

[0019] Cold-rolled ...

Embodiment 2

[0024] The mass percent of the ferritic stainless steel composition of the present embodiment is:

[0025] C: 0.046%, Si: 0.51%, Mn: 1.11%, P: 0.027%, S: 0.0042%, Cr: 18.15%, Ni: 8.09%, N: 0.045%, and the rest are Fe and unavoidable impurities;

[0026] Hot-rolled raw materials are pickled, the annealed plate temperature is 1128°C, the plate thickness is 2.5mm, and the production line speed is 53m / min; the pickling concentration of sulfuric acid is 279g / L, and the pickling temperature is 79°C; The pickling concentration is 29g / L, and the pickling temperature is 40°C.

[0027] Cold rolling mill rolling process: the deformation rate of each pass is 23.4% for 1 pass, 20.2% for 2 passes, 17.8% for 3 passes, 16.3% for 4 passes, 15.9% for 5 passes, 15% for 6 passes, 13.7% for the 7th pass, 12.1% for the 8th pass, 11.2% for the 9th pass, 9.0% for the 10th pass, 9.1% for the 11th pass, and 7.9% for the 12th pass. The rolling speed of cold rolling is 80m / min.

[0028] Cold-rolled an...

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

PUM

No PUM Login to view more

Abstract

The present invention relates to a rolling method of austenitic stainless steel plate, which comprises the following sequential steps: Ⅰ hot-rolled steel coil, plate thickness 2.5 mm, annealed plate temperature 1120°C±10°C; Ⅱ pickling of hot-rolled raw material ; Production line speed 50m/min±5m/min; Ⅲ cold rolling mill rolling: the deformation rate of each pass is 1 pass and 2 passes respectively, which is 19%~24%; 3 passes and 4 passes and 5 passes 14%~19% for the pass; 11%~15% for the 6th pass, 7th pass and 8th pass; 7%~12% for the 9th pass and 10th pass; the rolling speed is 80m/min±5m /min; Ⅳ cold rolling, annealing and pickling, the annealing plate temperature is 1110±10℃, and the production line speed is 55±10m/min. With the rolling method of the present invention, the grain size is 7.5-8, so the elongation is improved, and the elongation is 58%-60% on average. During the stamping process, cracking and wrinkling do not occur.

Description

technical field [0001] The invention belongs to a rolling method of a stainless steel plate, and in particular relates to a rolling method of an austenitic stainless steel plate. Background technique [0002] Austenitic stainless steel is an important steel grade in stainless steel and has a wide range of applications. However, due to the unoptimized annealing and rolling process in actual production, the elongation rate of the finished cold plate is low, averaging about 52%. During the stamping process, users are prone to cracking and wrinkling, which is related to low elongation after analysis. In the existing rolling method of austenitic stainless steel plate, due to insufficient rolling deformation of the rolling mill and high annealing temperature of the hot line and cold line, the finished cold plate has coarse grains, grade 6-6.5, and low elongation. The elongation is low, and it is easy to cause defects in stamping. Contents of the invention [0003] In order to...

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

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B21B1/22
CPCB21B1/22B21B2001/221B21B2001/225B21B2201/02B21B2261/04B21B2261/20B21B2275/06
Inventor 杨永杰白晋钢罗刚杨兴州
Owner SHANXI TAIGANG STAINLESS STEEL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap