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Novel 9SiCrAlBN alloy tool steel

A technology of alloy tool steel and tool steel, which is applied in the field of alloy steel, can solve the problems of small steel plus alloy content, high quenching temperature, and not suitable for environmental protection, and achieve the effect of saving energy and reducing quenching temperature

Inactive Publication Date: 2013-02-20
周畅超
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of steel has the characteristics of low quenching temperature and small deformation. However, due to the small alloy content of steel, it has a large gap in wear resistance and strength compared with cold work die steel Cr12 and Cr12Mo1V1, and chromium, tungsten and vanadium are precious metals. , the smelting process consumes more energy, and the addition of chromium, molybdenum, and vanadium increases the quenching temperature of the steel, which is not suitable for environmental protection and is not an energy-saving product. These metals are scarce strategic resources.

Method used

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  • Novel 9SiCrAlBN alloy tool steel
  • Novel 9SiCrAlBN alloy tool steel

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] In the 9SiCrAlBN alloy tool steel provided by the present invention, it comprises by weight percentage:

[0029] Carbon C_0.80, Silicon Si_0.40, Manganese Mn_0.50, Chromium Cr_0.70,

[0030] Aluminum Al_0.90, Boron B_0.01, Sodium Na_0.01, Magnesium Mg_0.001,

[0031] Nitrogen N_0.03, Nitride_0.02, the balance being Fe and unavoidable impurities.

[0032] The steps of the above-mentioned novel 9SiCrAlBN alloy tool steel heat treatment process are as follows:

[0033] (1), preheating: all raw materials are preheated at a temperature of 560°C to 600°C, and the preheating time is 60 minutes;

[0034] (2) Quenching heating: the quenching heating temperature is 920°C to 980°C, oil cooling or air cooling or salt bath cooling is adopted, and the quenching time is 20 to 30 minutes;

[0035] (3) Tempering: the tempering temperature is 180°C to 220°C, and then air cooled to room temperature.

Embodiment 2

[0037] In the 9SiCrAlBN alloy tool steel provided by the present invention, it comprises by weight percentage:

[0038] Carbon C_0.80, Silicon Si_0.30, Manganese Mn_0.90, Chromium Cr_1.30,

[0039] Aluminum Al_1.80, Sodium Na_0.04, Nitrogen N_0.09, Nitride_0.06,

[0040] The balance is Fe and unavoidable impurities.

[0041] The steps of the above-mentioned novel 9SiCrAlBN alloy tool steel heat treatment process are as follows:

[0042] (1), the first preheating: the preheating temperature of all raw materials is 560 ℃ ~ 600 ℃, and the preheating time is 60 minutes;

[0043] (2), the second preheating: after the first preheating, the second preheating, and then quenching, the second preheating temperature is 750 ℃ ​​~ 800 ℃, the second preheating time is 40 ~ 50 minute.

[0044] (3) Quenching heating: the quenching heating temperature is 920°C to 980°C, oil cooling or air cooling or salt bath cooling is adopted, and the quenching time is 20 to 30 minutes;

[0045] (4), th...

Embodiment 3

[0048] In the 9SiCrAlBN alloy tool steel provided by the present invention, it comprises by weight percentage:

[0049] Carbon C_0.90, Silicon Si_0.50, Manganese Mn_1.20, Chromium Cr_1.00,

[0050] Aluminum Al_1.10, Boron B_0.09, Sodium Na_0.02, Magnesium Mg_0.003,

[0051] Nitrogen N_0.03, Nitride_0.01, the balance being Fe and unavoidable impurities.

[0052] The steps of the above-mentioned novel 9SiCrAlBN alloy tool steel heat treatment process are as follows:

[0053] (1), the first preheating: the preheating temperature of all raw materials is 560 ℃ ~ 600 ℃, and the preheating time is 60 minutes;

[0054] (2), the second preheating: after the first preheating, the second preheating, and then quenching, the second preheating temperature is 750 ℃ ​​~ 800 ℃, the second preheating time is 40 ~ 50 minute.

[0055] (3) Quenching heating: the quenching heating temperature is 920°C to 980°C, oil cooling or air cooling or salt bath cooling is adopted, and the quenching time i...

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Abstract

The present invention provides a novel 9SiCrAlBN alloy tool steel, which contains C, Si, Mn, Cr, Al, B, Na, Mg, N and a nitride, wherein the improvement comprises that the tool steel comprises, by mass, 0.8-1.0 part of C, 0.3-1.8 parts of Si, 0.3-1.8 parts of Mn, 0.6-1.4 parts of Cr, 0-0.006 part of Na, 0-0.003 part of Mg, 0.8-1.8 parts of Al, 0-0.10 part of B, 0.01-0.10 part of N, 0.01-0.08 part of a nitride, and the balance of Fe and unavoidable impurities. Compared with the 9SiCrAlBN alloy tool steel in the prior art, the novel 9SiCrAlBN alloy tool steel of the present invention has the following excellent effects that: mechanical properties of the cold work mold steel Cr12 and Cr12Mo1V1 are maintained, a quenching temperature is substantially reduced, and a lot of energy sources are saved.

Description

【Technical field】 [0001] The invention relates to an alloy tool steel, in particular to an alloy steel added with Al, B, N, nitrides, Na, and Mg. 【Background technique】 [0002] Alloy steel formed by adding alloying elements on the basis of carbon tool steel, referred to as tool steel. Commonly used Chinese brands of measuring tool steel are 9SiCr, 8MnSi, Cr2 and 9Cr2. Compared with carbon tool steel, alloy tool steel has better hardenability, better heat treatment cracking tendency, higher wear resistance and heat resistance, and can be adapted to different purposes. It is widely used in various tools where the performance of carbon tool steel cannot meet the requirements. Such as dies, taps, drills, reamers, gear milling cutters, cutting tools, cold rolls, steel stamps, punching chisels, etc. This kind of steel has the characteristics of low quenching temperature and small deformation. However, due to the small alloy content of steel, it has a large gap in wear resistan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/32C22C38/34
Inventor 周畅超赵春芳周章龙应振强舒泫淏周向儒
Owner 周畅超
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