Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Production method for SPCC-W black skin steel plate

A technology of SPCC-W and production method, which is applied in the field of cold processing and heat treatment of iron and steel materials, can solve problems such as product degradation and bonding, and achieve the effects of improved surface quality, low gas consumption, and reduced annealing temperature

Inactive Publication Date: 2021-11-12
XINJIANG BAYI IRON & STEEL
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

SPCC-W and other types of steel, because the surface quality requires special blackening and bluish treatment, which is higher than ordinary SPCC steel types, it is very easy to have surface defects such as bonding during the production process of the cover, resulting in product degradation

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Production method for SPCC-W black skin steel plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] A production method of SPCC-W black skin steel plate, 1, the silicon content in the steel is: 0.02%≤[Si]≤0.030%; 2, the thickness of the raw material coil of the black skin steel coil is 2.75mm, the cold rolling reduction rate 74.55%; the crimp tensile stress of cold-rolled coils is controlled within 30Mpa; 3. The bell annealing process is designed as follows, the protective medium is protected by nitrogen, and the heating rate is 85-90°C / h in the temperature range of 0-440°C. Keep warm at 440°C for 3 hours to ensure that the emulsion residue on the surface of the rolled steel coil is fully volatilized, heat at 440-675°C at a heating rate of 41-51°C / h, set the annealing temperature at 675°C, and keep warm for 8 hours. The cooling time of the heating cover is set to 0.5 hours, and the temperature of the heating cover is 630-650°C. When the temperature is higher than 650°C, the cooling cover is continued; Baked at 10°C, ventilated and oxidized on the final cooling platfor...

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

PropertyMeasurementUnit
thicknessaaaaaaaaaa
elongation at breakaaaaaaaaaa
Login to View More

Abstract

The invention discloses a production method for an SPCC-W black skin steel plate. The production method is characterized in that 1, the silicon content [Si] in steel is larger than or equal to 0.02 percent and less than or equal to 0.030 percent; 2, the thickness of a black steel coil is 3.0mm, the cold rolling reduction rate is 66.6 percent, and the curling tensile stress of a cold-rolled coil is controlled within 30Mpa; and 3, a cover annealing process is designed as follows: a protective medium is protected by nitrogen, a temperature heating interval of 0-440 DEG C adopts a heating speed of 85-90 DEG C / h, the temperature is kept for 3h at 440 DEG C, emulsion residues on the surface of a rolled steel coil are ensured to be fully volatilized, the temperature is heated at 440-675 DEG C by adopting a heating speed of 41-51 DEG C / h, an annealing heat preservation temperature is set to be 675 DEG C, the temperature is kept for 8h, a cooling time with a heating cover is set to be 0.5h, a temperature with the heating cover removed is 630-650 DEG C, cooling with the cover is continued when the temperature is higher than 650 DEG C, a cooling cover is used after the heating cover is removed, air cooling and water cooling are conducted for 6h, a product is discharged after cooling to 280 plus / minus 10 DEG C, ventilation oxidation is conducted on a final cooling table, rapid oxidation is conducted to form a special oxide layer, and a dense oxide layer mainly comprising Fe2O3 is formed on the outer layer.

Description

technical field [0001] The patent of the invention relates to a production method of SPCC-W black steel plate, which belongs to the field of cold processing and heat treatment of iron and steel materials. Background technique [0002] The annealing process is a common method for stress relief and microstructure improvement of cold-rolled products. Due to its use, black skin steel has high quality requirements for processing deformation and coating-free. Therefore, the production is more difficult. In order to ensure the excellence of the product's surface and mechanical properties, a new method is needed in the composition design and annealing process to meet the quality requirements. The conventional masking process needs to be carried out in a hydrogen protective atmosphere, but due to the special quality requirements of black steel, the protective medium needs to be changed. The production of SPCC-W black skin steel is realized through experimental research on bell anne...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C21D8/02C21D1/26C21D1/74C23C8/14
CPCC21D8/0205C21D8/0236C21D8/0247C21D1/26C21D1/74C23C8/14Y02P10/20
Inventor 雷洪向华吾塔
Owner XINJIANG BAYI IRON & STEEL
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com