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Novel 5CrW2SiBAlN shock-resisting tool steel

An impact-resistant tool steel technology, applied in the field of impact-resistant tool steel, can solve the problems of not being a low-carbon energy-saving product, increasing the quenching temperature, and consuming more energy, and achieving the effect of saving a lot of energy and reducing the quenching temperature

Inactive Publication Date: 2015-06-10
徐恒易
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of steel has good strength and hardness at high temperature, high toughness after tempering, certain hardenability and high temperature mechanical strength, and is not sensitive to decarburization, deformation and cracking during heat treatment, but tungsten Molybdenum, molybdenum, and vanadium are precious metals that consume more energy during the smelting process, and the addition of tungsten, molybdenum, and vanadium increases the quenching temperature of steel, which is not a low-carbon energy-saving product, and these metals are scarce strategic resources.

Method used

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  • Novel 5CrW2SiBAlN shock-resisting tool steel
  • Novel 5CrW2SiBAlN shock-resisting tool steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] In the 5CrW2SiBAlN alloy tool steel provided by the present invention, it comprises by mass parts:

[0027] C_0.50, Si_0.65, Mn_0.30, Cr_1.15, W_2.20, B_0.005, Al_0.50,

[0028] Mg_0.003, N_0.03, nitride_0.02, the balance is Fe and unavoidable impurities.

[0029] The steps of the above-mentioned novel 5CrW2SiBAlN alloy tool steel heat treatment process are as follows:

[0030] (1) Preheating: Preheat all the raw materials at a temperature of 560°C to 600°C, and the preheating time is 60 minutes;

[0031] (2) Quenching heating: the quenching heating temperature is 860 ℃ ~ 900 ℃, oil cooling or air cooling or salt bath cooling is adopted, and the quenching time is 20 ~ 30 minutes;

[0032] (3) Tempering: Tempering temperature is 180°C to 220°C, and then air cooled to room temperature.

Embodiment 2

[0034] In the 5CrW2SiBAlN alloy tool steel provided by the present invention, it comprises by mass parts:

[0035] C_0.50, Si_0.65, Mn_<0.40, Cr_1.20, W_2.20, B_0.005, Al_0.70,

[0036] Mg_0.003, N_0.08, nitride_0.06, the balance is Fe and unavoidable impurities.

[0037] The steps of the above-mentioned novel 5CrW2SiBAlN alloy tool steel heat treatment process are as follows:

[0038] (1) Preheating for the first time: Preheat all raw materials at a temperature of 560°C to 600°C, and the preheating time is 60 minutes;

[0039](2), the second preheating: after the first preheating, carry out the second preheating, then quenching, the second preheating temperature is 750 ℃ ​​~ 800 ℃, the second preheating time is 40 ~ 50 minute.

[0040] (3) Quenching heating: the quenching heating temperature is 860 ℃ ~ 900 ℃, oil cooling or air cooling or salt bath cooling is adopted, and the quenching time is 20 ~ 30 minutes;

[0041] (4) Tempering for the first time: the tempering tempe...

Embodiment 3

[0044] In the 5CrW2SiBAlN alloy tool steel provided by the present invention, it comprises by mass parts:

[0045] C_0.45, Si_1.00, Mn_<0.40, Cr_1.40, W_2.40B_0.003,

[0046] Al_0.40, N_0.08, nitride_0.08, the balance is Fe and unavoidable impurities.

[0047] The steps of the above-mentioned novel 5CrW2SiBAlN alloy tool steel heat treatment process are as follows:

[0048] (1) Preheating for the first time: Preheat all raw materials at a temperature of 560°C to 600°C, and the preheating time is 60 minutes;

[0049] (2), the second preheating: after the first preheating, carry out the second preheating, then quenching, the second preheating temperature is 750 ℃ ​​~ 800 ℃, the second preheating time is 40 ~ 50 minute.

[0050] (3) Quenching heating: the quenching heating temperature is 860 ℃ ~ 900 ℃, oil cooling or air cooling or salt bath cooling is adopted, and the quenching time is 20 ~ 30 minutes;

[0051] (4) Tempering for the first time: the tempering temperature is 1...

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PUM

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Abstract

Novel 5CrW2SiBAlN shock-resisting tool steel is provided. The tool steel comprises C, Si, Cr, W, B, Al, Mg, N and nitrides (BN, AlN and / or TiN). An improvement of the tool steel is that: the tool steel comprises 0.40-0.60 part by mass of the C, 0.30-1.20 parts by mass of the Si, less than 0.40 part by mass of Mn, 1.00-1.60 parts by mass of the Cr, 2.00-3.00 parts by mass of the W, 0-0.008 part by mass of the B, 0-0.80 part by mass of the Al, 0-0.005 part by mass of the Mg and 0-0.10 part by mass of the N, with the total content of the nitrides being 0-0.80 part by mass and with the balance being Fe and unavoidable impurities. Compared with the prior art, beneficial effects of the novel 5CrW2SiBAlN are that the tool steel achieves mechanical performance of middle-chromium high alloy cold work die steel (with a code LD), largely reduces the quenching temperature and saves a large amount of energy.

Description

technical field [0001] The invention relates to an impact-resistant tool steel, in particular to an impact-resistant tool steel added with Mg, B, Al, N and nitrides. Background technique [0002] Among the impact-resistant steels formed by adding alloying elements on the basis of carbon tool steels, the commonly used Chinese brands of measuring tool steels are 4CrW2Si, 5CrW2Si, 6CrMnSi2Mo1V, etc. Widely used for tools operating under high shock loads, such as: hand and pneumatic chisels, air hammer tools, riveting tools, heavy vibration cutters, dies for cold punching and edge trimming; hot work tools, such as hot punching and Piercing tools, hot shear dies, hot forging dies, die-casting dies for fusible alloys, etc. This kind of steel has good strength and hardness at high temperature, high toughness after tempering, certain hardenability and high temperature mechanical strength, and is not sensitive to decarburization, deformation and cracking during heat treatment, but t...

Claims

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Application Information

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IPC IPC(8): C22C38/22C22C38/32
CPCC22C38/02C21D1/18C22C38/001C22C38/002C22C38/04C22C38/06C22C38/12C22C38/18C22C38/32
Inventor 徐恒易徐思杰周向儒
Owner 徐恒易
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