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Strong toughness hot work die steel and production method thereof

A technology of hot-working die steel and production method, which is applied in the field of alloy steel manufacturing technology, can solve the problems that the performance of carbon steel cannot fully meet the needs, and achieve the effects of reducing annual consumption, reducing manufacturing costs, good toughness and wear-resistant durability

Active Publication Date: 2018-05-18
辽宁乾金金属材料开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the rapid development of modern industry and science and technology, the performance of carbon steel can no longer fully meet the needs, so people have developed various alloy steel

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Strong toughness hot work die steel, the composition and weight percentage of the die steel are.

[0037] C 0.36%; Si 0.8%; Mn 0.7%; Cr 4.8%.

[0038] Mo 1.3%; V 0.8%; W 0.3%; Ni 0.4%.

[0039] Co 0.1%; Nb 0.08%; RE 0.008%; S≤0.003%; P≤0.025%; Fe balance.

[0040] The production method of the above-mentioned strong and tough hot work die steel can be implemented according to the following steps.

[0041] (1) Smelting: Smelting according to the traditional conventional method, placing the batch materials meeting the chemical composition requirements in an intermediate frequency induction furnace, melting at a temperature of 1590°C, and then pouring steel ingots.

[0042] (2) Electroslag remelting: put the above steel ingot as a consumable electrode in the electroslag remelting device for secondary refining; use electric current to generate resistance heat through the electroslag layer to melt the consumable electrode alloy base material, liquid The metal falls through...

Embodiment 2

[0049] Strong toughness hot work die steel, the composition and weight percentage of the die steel are.

[0050] C 0.45%; Si 0.95%; Mn 0.8%; Cr 5.5%.

[0051] Mo 1.8%; V 1.0%; W 0.6%; Ni 0.5%.

[0052] Co 0.2%; Nb 0.12%; RE 0.012%; S≤0.003%; P≤0.025%; Fe balance.

[0053] The production method of the above-mentioned strong and tough hot work die steel can be implemented according to the following steps.

[0054] (1) Smelting: Smelting according to the traditional conventional method, placing the batch materials meeting the chemical composition requirements in an intermediate frequency induction furnace, melting at a temperature of 1610°C, and then pouring steel ingots.

[0055] (2) Electroslag remelting: put the above steel ingot as a consumable electrode in the electroslag remelting device for secondary refining; use electric current to generate resistance heat through the electroslag layer to melt the consumable electrode alloy base material, liquid The metal falls through ...

Embodiment 3

[0062] Strong toughness hot work die steel, the composition and weight percentage of the die steel are.

[0063] C 0.4%; Si 0.9%; Mn 0.75%; Cr 4.9%.

[0064] Mo 1.5%; V 0.9%; W 0.5%; Ni 0.44%.

[0065] Co 0.18%; Nb 0.11%; RE 0.01%; S≤0.003%; P≤0.025%; Fe balance.

[0066] The production method of the above-mentioned strong and tough hot work die steel can be implemented according to the following steps.

[0067] (1) Smelting: Smelting according to the traditional conventional method, placing the batch materials meeting the chemical composition requirements in an intermediate frequency induction furnace, melting at a temperature of 1660°C, and then pouring steel ingots.

[0068] (2) Electroslag remelting: put the above steel ingot as a consumable electrode in the electroslag remelting device for secondary refining; use electric current to generate resistance heat through the electroslag layer to melt the consumable electrode alloy base material, liquid The metal falls throug...

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Abstract

The invention relates to high-toughness hot work die steel and a production method thereof and belongs to the field of alloy steel manufacture. The die steel comprises the components: 0.36-0.45% of C, 0.8-0.95% of Si, 0.7-0.8% of Mn, 4.8-5.5% of Cr, 1.3-1.8% of Mo, 0.8-1.0% of V, 0.3-0.6% of W, 0.4-0.5% of Ni, 0.1-0.2% of Co, 0.08-0.12% of Nb, 0.008-0.012% of RE, less than or equal to 0.003% of S, less than or equal to 0.025% of P and the balance Fe. The production method is implemented according to the following steps: (1) smelting; (2) electroslag remelting; (3) high-temperature homogenizing; (4) forging; (5) blank forging; (6) annealing treatment; and (7) quench tempering. The high-toughness hot work die steel is high in hardness, low in production cost, long in service life and relatively high in toughness, wear resistance and durability.

Description

technical field [0001] The invention relates to a strong toughness hot work die steel and a production method thereof, belonging to the technical field of alloy steel manufacturing technology. Background technique [0002] Tools and molds are known as the "mother of modern industry", which shows the importance and indelible contribution of tools and molds in modern industry. Among them, tool and mold steel is the most important part of molds, and it is also the most widely used material in mold materials. , is an important material carrier and technical foundation of the tool and mold manufacturing industry, and its variety, specification, and quality play a decisive role in the performance, service life and manufacturing cycle of the tool and mold. [0003] Steel is an extremely important metal material in economic construction. According to the chemical composition, it is divided into two categories: carbon steel (referred to as carbon steel) and alloy steel. Carbon stee...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/18C22C38/02C22C38/04C22C38/12C22C38/10C22C38/08C22C33/04
CPCC22C33/04C22C38/005C22C38/02C22C38/04C22C38/105C22C38/12C22C38/18
Inventor 左其福左郁锋
Owner 辽宁乾金金属材料开发有限公司
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