Hot work die steel material and preparation method thereof

A technology of hot work die steel and die, which is applied in the field of steel processing, can solve the problems affecting the use effect of hot work die steel, hardness reduction, etc., and achieve the effects of high utilization rate, reduced quenching cost, and low raw material loss

Inactive Publication Date: 2021-09-17
上海双舜科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, when the existing hot work die steel materials are used, when the service temperature exc

Method used

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  • Hot work die steel material and preparation method thereof

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Example Embodiment

[0024] Example 1

[0025] A hot work die steel material, wherein the raw materials used (by weight percentage) include carbon 0.4wt%, chromium 1.1wt%, vanadium 0.2wt%, tungsten 0.3wt%, molybdenum 0.7wt%, copper 0.7wt%, Manganese 2.3wt%, nickel 0.7wt%, silicon 0.3wt%, iron 93.3wt%.

[0026] A method for preparing a hot work die steel material, the specific preparation steps are:

[0027] Step 1. Initial refining: put iron and carbon into an intermediate frequency induction furnace for smelting according to the ratio of raw materials to obtain base molten steel, and then transfer the base molten steel into a vacuum refining furnace for vacuum refining to prepare refined molten steel;

[0028] Step 2. Mixing: transfer the refined molten steel into the intermediate frequency induction furnace, then add chromium, vanadium, tungsten, molybdenum, copper, manganese, nickel, silicon to the intermediate frequency induction furnace in sequence according to the ratio of raw materials, me...

Example Embodiment

[0039] Example 2

[0040] A hot work die steel material, wherein the raw materials used (by weight percentage) include carbon 0.6wt%, chromium 2.3wt%, vanadium 0.8wt%, tungsten 0.5wt%, molybdenum 0.9wt%, copper 1.3wt%, Manganese 4.4wt%, nickel 0.9wt%, silicon 0.4wt%, iron 87.9wt%.

[0041] A method for preparing a hot work die steel material, the specific preparation steps are:

[0042]Step 1. Initial refining: put iron and carbon into an intermediate frequency induction furnace for smelting according to the ratio of raw materials to obtain base molten steel, and then transfer the base molten steel into a vacuum refining furnace for vacuum refining to prepare refined molten steel;

[0043] Step 2. Mixing: transfer the refined molten steel into the intermediate frequency induction furnace, then add chromium, vanadium, tungsten, molybdenum, copper, manganese, nickel, silicon to the intermediate frequency induction furnace in sequence according to the ratio of raw materials, mel...

Example Embodiment

[0054] Example 3

[0055] A hot work die steel material, wherein the raw materials used (by weight percentage) include carbon 0.7wt%, chromium 3.5wt%, vanadium 1.5wt%, tungsten 0.8wt%, molybdenum 1.2wt%, copper 2.1wt%, Manganese 5.5wt%, nickel 1.1wt%, silicon 0.5wt%, iron 83.1wt%.

[0056] A method for preparing a hot work die steel material, the specific preparation steps are:

[0057] Step 1. Initial refining: put iron and carbon into an intermediate frequency induction furnace for smelting according to the ratio of raw materials to obtain base molten steel, and then transfer the base molten steel into a vacuum refining furnace for vacuum refining to prepare refined molten steel;

[0058] Step 2. Mixing: transfer the refined molten steel into the intermediate frequency induction furnace, then add chromium, vanadium, tungsten, molybdenum, copper, manganese, nickel, silicon to the intermediate frequency induction furnace in sequence according to the ratio of raw materials, me...

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Abstract

The invention discloses a hot work die steel material and a preparation method thereof, and particularly relates to the field of steel processing. The hot work die steel material comprises the following raw materials in percentage by weight: 0.4 wt%-0.7 wt% of carbon, 1.1 wt%-3.5 wt% of chromium, 0.2 wt%-1.5 wt% of vanadium, 0.3 wt%-0.8 wt% of tungsten, 0.7 wt%-1.2 wt% of molybdenum, 0.7 wt%-2.1 wt% of copper, 2.3 wt%-5.5 wt% of manganese, 0.7 wt%-1.1 wt% of nickel, 0.3 wt%-0.5 wt% of silicon and the balance of iron. Hot work die steel is prepared from carbon, chromium, vanadium, tungsten, molybdenum, copper, manganese, nickel, silicon and iron, then homogenization treatment is conducted, a die steel ingot is subjected to multiple times of cooling quenching through mixed quenching liquid, the hardness of the hot work die steel is higher, and meanwhile the hardness reduction rate of the hot work die steel at the high temperature is lower.

Description

technical field [0001] The embodiments of the present invention relate to the field of steel processing, in particular to a hot work die steel material and a preparation method thereof. Background technique [0002] Hot work die steel refers to alloy tool steel suitable for making molds for thermal deformation processing of metals, such as hot forging dies, hot extrusion dies, die-casting dies, hot upsetting dies, etc. Therefore, the mold material is required to have high strength, hardness and thermal stability, especially high thermal strength, thermal fatigue, toughness and wear resistance. [0003] However, when the existing hot work die steel materials are used, when the service temperature exceeds 600°C, their hardness will be greatly reduced, which will affect the use effect of the hot work die steel. Contents of the invention [0004] Therefore, the embodiment of the present invention provides a hot work die steel material and its preparation method. The present i...

Claims

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Application Information

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IPC IPC(8): C22C38/46B22D7/00C21D1/18C21D1/60C21D6/00C22C33/04C22C38/02C22C38/04C22C38/42C22C38/44
CPCC22C38/46C22C38/44C22C38/42C22C38/02C22C38/04C22C33/04B22D7/00C21D1/18C21D1/60C21D6/004C21D6/005C21D6/008
Inventor 许建松
Owner 上海双舜科技发展有限公司
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