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

Hot rolled plate and preparation process thereof

A preparation process and plate technology, which is applied in the field of hot-rolled plates and its preparation, can solve problems such as unfavorable steel formability and surface quality, rough hot-rolling process, and reduced production efficiency, so as to prevent scale defects, improve comprehensive performance, The effect of improving the yield rate

Active Publication Date: 2015-07-08
JINGYE STEEL CO LTD
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The existing technology mainly has the following defects: (1) The amount of titanium added is always maintained at a relatively high level. Since titanium is a precious metal, the more titanium added, the higher the cost, and the high amount of titanium added, the titanium nitride The precipitation temperature increases, and the precipitated particles become coarser. Therefore, the enamelled steel with more titanium added is not only costly but also not conducive to improving the formability and surface quality of the steel plate.
(2) There are many studies on single-sided enamelled steel, focusing on the improvement of stamping performance, but often ignoring the improvement of compressive strength. It is difficult to directly apply the added elements of the anti-scale explosion performance of single-sided enameled steel to the improvement of double-sided enameled steel Zhonglai
(3) The hot rolling process is either relatively rough or too complicated, which reduces the production efficiency. At the same time, if a high rolling rate is used, the steel plate is easy to crack, thereby reducing the qualified rate

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 Construction

[0024] (1) In Examples 1-6, the billet proportioning was carried out according to the composition list shown in Table 1, but hot rolling and cooling treatment were performed to obtain a plate.

[0025] The specific steps of hot rolling are as follows: the first-stage hot-rolling temperature is 1200±50°C, and the reduction is 15-25%; the second-stage hot-rolling temperature is 1100±50°C, and the reduction is 10-20%; The hot rolling temperature in the third stage is 1000±30℃, the reduction is 10-20%, the hot rolling temperature in the fourth stage is 850±10℃, the reduction is 5-15%; the cumulative reduction is controlled at 40- within the 80% range. Rapid cooling after rolling, the cooling rate is 25-40°C / s, the coiling temperature is 600-650°C, and the final plate thickness is 15-25mm.

[0026] It is particularly pointed out that Examples 1-3 are optimal implementations, in which the content of W is precisely controlled, based on W=(C+0.98N+0.5S) / 2-Ti, and the accuracy is contro...

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
tensile strengthaaaaaaaaaa
thicknessaaaaaaaaaa
elongationaaaaaaaaaa
Login to View More

Abstract

The invention relates to a hot rolled plate and a preparation process thereof. The hot rolled plate comprises, by weight, 0.02-0.05% of C, 0.012-0.015% of N, 0.01-0.05% of S, less than or equal to 0.045% of P, less than or equal to 0.04% of Si, less than or equal to 0.025% of W, 0.05-1.3% of Mn, 0.01-0.05% of Al, 0.01-0.05% of Ti, 0.05-0.2% of RE, and the balance Fe and unavoidable impurities. The preparation process employs the method of combining sectionally continuous rolling with fast cooling after rolling, and the obtained plate has the advantages of high strength, high elongation, strong enamel coating adhesion, and good anti-fish scaling performance.

Description

technical field [0001] The present application relates to a hot-rolled plate and a preparation method thereof, in particular to a hot-rolled plate with high strength, high elongation, strong enamel coating adhesion, and good anti-scale explosion performance and a preparation method thereof. Background technique [0002] Enamel processing products are formed by forming a glassy enamel layer on the surface of a substrate made of metal materials such as steel and cast iron. become. [0003] The steel used for single-side enameling is common in the prior art, while the steel for double-side enameling requires that the steel plate can realize dense glaze and double-side enamelling. Compared with the high requirements for deep drawing performance of single-sided enameled steel, double-sided enameled steel pays more attention to the requirements of steel strength and enamel performance. [0004] The phenomenon of scale explosion is an important reason for the high reject rate of ...

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): C22C38/60C22C38/14C21D8/02
CPCC21D8/0226C22C38/001C22C38/005C22C38/02C22C38/04C22C38/06C22C38/12C22C38/14
Inventor 李宏亮
Owner JINGYE STEEL CO LTD
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