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

High-quality alloy tool steel 42 CrMo4 quenched and tempered steel plate and production method thereof

A technology of alloy tool steel and quenched and tempered steel plate, which is applied in the field of high-quality alloy tool steel production, and can solve problems such as increasing customer costs, unable to meet demand as soon as possible, and inconvenient customers

Inactive Publication Date: 2019-03-29
NANYANG HANYE SPECIAL STEEL CO LTD
View PDF6 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Currently in the market, 42CrMo4 and other high-strength alloy tool steels are mostly tempered (T) for delivery, and only small samples are subjected to quenching and tempering tests. After delivery, customers cut small pieces and then undergo quenching and tempering treatment. This method brings inconvenience to customers and improves The customer's cost is reduced, and the market demand cannot be met as soon as possible

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
  • High-quality alloy tool steel 42 CrMo4 quenched and tempered steel plate and production method thereof
  • High-quality alloy tool steel 42 CrMo4 quenched and tempered steel plate and production method thereof
  • High-quality alloy tool steel 42 CrMo4 quenched and tempered steel plate and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] The technical features of the present invention will be further described below in conjunction with the embodiments.

[0016] The embodiment of the present invention is to produce a kind of high-quality alloy tool steel 42CrMo4 quenched and tempered steel plate, its thickness is 50-150mm, comprises the chemical composition of following mass percentage: 0.39%≤C≤0.25%, 0.2%≤Si≤0.30%, 0.75% %≤Mn≤0.85%, P≤0.018%, S≤0.005%, 0.95%≤Cr≤1.05%, 0.18%≤Mo≤0.25%, 0.02%≤Als≤0.04%, 0.741≤CEV≤0.004%, others are Fe and trace elements: Ti≤0.01%, B≤0.0.00075%, As≤0.012%, N≤0.008%, Cu≤0.04%, where CEV=C+Mn / 6+(Mo+V+Cr) / 5 +(Ni+Cu) / 15.

[0017] In the above-mentioned technical scheme adopted by the present invention, C, Si, Mn are the key elements to improve the strength of the steel plate, and the C content determines the process system of smelting, heating, rolling, and heat treatment of 42CrMo4, and the high-content C element of this steel type is also The carbon equivalent is increased,...

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
phase transition temperatureaaaaaaaaaa
Login to View More

Abstract

The invention discloses a high-quality alloy tool steel 42 CrMo4 quenched and tempered steel plate. The high-quality alloy tool steel 42 CrMo4 quenched and tempered steel plate is subjected to KR molten iron pretreatment, converter smelting, argon blowing treatment, LF refining, VD refining, continuous casting, heating, rolling, stack cooling, heat treatment, on the basis of ensuring that the customer requires 42 CrMo4 components, harmful elements such as P and S in the steel are strictly controlled in the smelting process, and the purity of the molten steel is guaranteed to basically reach the level of a clean steel. In the rolling process, high-temperature low-speed and heavy reduction uniform tissues are adopted, so that the quality of the flaw detection is ensured; the harmful gas in the steel plate is diffused through the high-temperature stack cooling, and the flaw detection is consolidated; the steel plate is subjected to high-temperature tempering treatment at 730 DEG c beforethe steel plate is subjected to thermal refining in order to prevent the steel plate from being subjected to fire cutting and aging cracking; the macro quality of steelmaking is controlled to reach the grade c of 0.5 grades, the good macro quality ensures that the steel plate cannot be cracked after the steel plate is quenched, and finally the performance of the 42 CrMo4 steel plate with the customer requirement is obtained through proper tempering temperature.

Description

technical field [0001] The invention belongs to the technical field of high-quality alloy tool steel production, and specifically relates to a high-quality alloy tool steel 42CrMo4 quenched and tempered steel plate and a production method thereof. Background technique [0002] Currently in the market, 42CrMo4 and other high-strength alloy tool steels are mostly tempered (T) for delivery, and only small samples are subjected to quenching and tempering tests. After delivery, customers cut small pieces and then undergo quenching and tempering treatment. This method brings inconvenience to customers and improves The cost of customers has been increased, and the demand of the market cannot be met as soon as possible. Contents of the invention [0003] In view of the above problems, the purpose of the present invention is to provide a high-quality alloy tool steel 42CrMo4 quenched and tempered steel plate, which can be quenched and tempered before the large plate is made and del...

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): C22C38/02C22C38/04C22C38/06C22C38/20C22C38/22C22C38/28C22C38/32C22C38/60C21D1/25C21D8/02C21D3/06
CPCC21D1/25C21D3/06C21D8/0226C22C38/001C22C38/002C22C38/02C22C38/04C22C38/06C22C38/20C22C38/22C22C38/28C22C38/32C22C38/60
Inventor 许少普王英杰朱书成李忠波张占杰刘庆波康文举唐郑磊张涛庞百鸣李亮蒋鹏薛艳生杨阳符可义袁永旗袁继恒于飒董真真郑海明陈良全微波朱先兴袁高俭杨春王勇白艺博李嘎子屈晓彬
Owner NANYANG HANYE SPECIAL 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