High-silicon high-manganese type high-thermal stability hot work die steel and thermal treatment process thereof

A technology of high thermal stability and hot work die steel, which is applied in the field of high silicon and high manganese high thermal stability hot work die steel and its heat treatment process, can solve the problems of reducing the performance index of steel ingots, low product grades, and coarse grains of materials

Inactive Publication Date: 2012-08-29
SHANGHAI UNIV
View PDF4 Cites 29 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This manufacturing process has the following problems: 1) The size of the electroslag ingot is small, and the small ingot size reduces the yield and manufacturing capacity of the product; 2) The original structure of the electroslag ingot has a large number of large particles or m

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-silicon high-manganese type high-thermal stability hot work die steel and thermal treatment process thereof
  • High-silicon high-manganese type high-thermal stability hot work die steel and thermal treatment process thereof
  • High-silicon high-manganese type high-thermal stability hot work die steel and thermal treatment process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0035] In this example, the composition and weight percentage of the hot work die steel are as follows:

[0036] C 0.32%, Si 1.2%, Mn 1.2%, Cr 3.8%, Mo 1.0%,

[0037] V 0.46%, P 0.01%, S 0.01%, Fe balance.

[0038] In the present embodiment, the technical process and steps of hot working tool steel are as follows:

[0039] A Electric furnace smelting: smelting in an electric arc furnace according to the above-mentioned ratio of alloying elements, the melting temperature is greater than 1500°C, casting into φ400mm-φ450mm electrode rods and cooling in air;

[0040] B Electroslag remelting: Place the poured steel ingot as a consumable electrode in the electroslag remelting device for electroslag remelting. The slag melting voltage is 56-62V, the current is 3000-5000A, and the electric system voltage is 57-59V. , current 11000-12000A, capping voltage 57-59V, current time 35-50Min, electroslag remelting into 500Kg-3000Kg electroslag ingot;

[0041] C High-temperature homogenizat...

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 invention relates to high-silicon high-manganese type high-thermal stability hot work die steel and a thermal treatment process thereof, and belongs to the technical field of alloy steel manufacturing process. The hot work die steel is characterized in that the ratio of high silicon to high manganese in chemical components is kept to be 1 to 1 and main alloy elements by mass percent comprise 0.25-0.45% of C, 0.8-2.0% of Si, 0.8-2.0% of Mn, 3.5-4.5% of Cr, 0.6-1.2% of Mo, 0.4-0.8% of V, less than 0.02% of P, less than 0.02% of S and Fe for the rest. A preparation process for the hot work die steel comprises the steps as follows: firstly, preparing materials, smelting and casting; secondly, carrying out electroslag remelting; carrying out high temperature homogenization thermal treatment, and carrying out multi-direction forging hot working; thirdly, carrying out superfine thermal treatment and isothermal annealing treatment; and lastly, carrying out quenching and tempering thermal treatment, namely heating to be 980-1100 DEG C for austenitizing, carrying out oil cooling or mist cooling, and tempering for two to three times at a temperature of 540-600 DEG C. The hot work die steel has the advantages of high thermal stability, high flexibility and good thermal fatigue performance.

Description

technical field [0001] The invention relates to a high-silicon, high-manganese, high-thermal-stability hot work die steel and its heat treatment process. The die steel makes full use of the alloying characteristics of silicon and manganese to ensure high silicon and manganese content in the steel, and the two elements With the same content, it can not only reduce the alloy cost (compared to H13 series steel), but also has higher thermal stability, good toughness and thermal fatigue performance than H13 steel, and belongs to the technical field of alloy steel manufacturing technology. Background technique [0002] The alloying elements that play a role in high-temperature thermal strength and thermal stability in hot work die steel are usually Cr, Mo, V and other elements, so some current research work is mainly on the adjustment of these alloying elements. The recent research of the research group found that the addition of a certain amount of manganese can increase the matr...

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): C22C38/38C22C38/34C22C38/24C21D8/00
Inventor 周青春吴晓春计天予李玲慧闵永安
Owner SHANGHAI UNIV
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