Continuous annealing SPCC steel belt with performance close to that of cover annealing product
A steel strip and cover stripping technology, applied in the field of metallurgy, can solve the problems of high yield strength of products, achieve the effects of optimizing product structure and precipitation, shortening the annealing process, and shortening the steelmaking process
Active Publication Date: 2022-06-21
LIUZHOU IRON & STEEL +1
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] The invention provides a manufacturing method of continuous annealing of SPCC steel strips and continuous annealing of SPCC steel strips, that is, a method for manufacturing continuous annealing of SPCC steel strips and continuous annealing of SPCC steel strips with performance close to that of covered products, so as to solve the problem of existing SPCC steel strips. The problem that the continuous annealing process makes the product yield strength higher
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0028] In order to have a clearer understanding of the technical features, objects and effects of the present invention, the present invention will now be described with reference to the accompanying drawings.
[0029] Invention principle:
[0030] The applicant compared the metallographic structure of the continuous return product and the cover return product. The metallographic structure of continuous return products and cover return products are as follows: Figure 1a and shown in b. Compared with the capping product, the grain size of the continuous retreating product is smaller, the carbide precipitation in the steel is less, and the carbon element mainly exists in the steel in the form of solid solution carbon. The applicant believes that the smaller grain size and higher solid solution carbon content are the main reasons for the high yield strength and the easy occurrence of yield plateaus of the continuously withdrawn products.
[0031] The existing continuous anneal...
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
Login to View More Abstract
The invention provides a continuous annealing SPCC steel strip with the performance close to that of a cover annealing product. The continuous annealing SPCC steel strip with the performance close to that of the cover annealing product comprises, by weight, 0.05%-0.07% of C, smaller than or equal to 0.02% of Si, 0.1%-0.2% of Mn, smaller than or equal to 0.02% of P, smaller than or equal to 0.015% of S, smaller than or equal to 0.005% of N and 0.03%-0.05% of Al. According to the method, the steelmaking technological process is shortened, the annealing technological process is also shortened, the production efficiency is improved, the cost is reduced, and the product structure and precipitation are optimized.
Description
[0001] This application is: Application No.: 2020106722882, Application Date: July 14, 2020, Title: A divisional application for the manufacturing method of continuously withdrawn SPCC steel strip with performance close to the cover return product and the continuous withdrawal of SPCC steel strip. technical field [0002] The invention relates to the field of metallurgy, in particular to a continuous annealing process for a low yield strength SPCC steel strip, in particular to a continuously withdrawn SPCC steel strip whose performance is close to that of a hooded product. Background technique [0003] SPCC (Steel plate cold-rolled common) is a kind of low-carbon aluminum killed steel widely used in automobile manufacturing industry, household appliance industry and galvanized and tin-plated substrate, etc. It occupies a dominant position in the current cold-rolled product market. . There are two main ways to produce SPCC products: hood annealing (referred to as hood anneali...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): C21D9/56C21D11/00C22C38/02C22C38/04C22C38/06C21D1/26C21D6/00
CPCC21D9/561C21D11/00C21D1/26C21D6/008C21D6/005C22C38/02C22C38/04C22C38/06Y02P10/20
Inventor 周博文樊雷叶姜钱学海蒋才灵杨跃标阮志勇邓深董苑华张应强庞通陆茂森
Owner LIUZHOU IRON & STEEL