A kind of preparation method of high temperature resistant alloy die steel

A technology of high temperature resistant alloy and die steel, applied in the field of die materials, can solve the problems of low strength and high heat resistance, and achieve the effect of good internal toughness and good plasticity

Active Publication Date: 2016-12-14
湖北日盛科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the unsatisfactory comprehensive properties of existing die steels such as toughness, low strength and high heat resistance existing in the prior art, the present invention provides a method for preparing high-temperature-resistant alloy die steel, which can realize high-temperature-resistant Die steel material has good strength and toughness, good heat resistance and low cost

Method used

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  • A kind of preparation method of high temperature resistant alloy die steel
  • A kind of preparation method of high temperature resistant alloy die steel
  • A kind of preparation method of high temperature resistant alloy die steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of high temperature resistant alloy die steel is characterized in that, described mass ratio is as follows,

[0026]

[0027] Using a certain amount of C can improve the shape and high temperature resistance strength just now in the billet stroke.

[0028] Si is added to ensure its stability during heat treatment and the strength of the steel slab, to ensure that it has good high-temperature strength and high-temperature hardness, and has good stability during heat treatment.

[0029] Mo is used to improve the hot strength of steel at high temperature. Instability caused by overheating of steel can be prevented.

[0030] The addition of Cr can make the alloy steel have oxidation resistance at high temperature, and its hot corrosion performance is greatly improved, and its combination with C can form a hard compound, making it have good wear resistance and toughness.

[0031] Using a certain amount of B can make the alloy steel have good internal ductility, w...

Embodiment 2

[0040] A kind of high temperature resistant alloy die steel is characterized in that, described mass ratio is as follows,

[0041]

[0042] The addition of P makes the alloy steel have better fatigue resistance and mechanical properties.

[0043] There is also a small amount of rare earth elements. Adding a certain amount of rare earth elements in the material can improve the oxidation resistance of the alloy, improve the expansion of fatigue cracks, and have a long service life and toughness.

[0044] A preparation method of high temperature resistant alloy die steel, the steps are as follows:

[0045] (A) Weigh C1.8%; Si6%; Mn0.6%; Al3.2%; Cr3%; Mo0.5%; S0.2%; B0.2%; Ni0.1%; P0.01% ; Rare earth 0.005%; Fe 83.385%;

[0046] (B) smelting the above-mentioned various raw materials, and hot rolling them into billets after smelting;

[0047] (C) Perform solid solution treatment on the billet obtained in the previous step: heat the billet to 1000-1100°C for 3-6 hours, and the...

Embodiment 3

[0053] A kind of high temperature resistant alloy die steel is characterized in that, described mass ratio is as follows,

[0054]

[0055]

[0056] A preparation method of high temperature resistant alloy die steel, the steps are as follows:

[0057] (A) Weigh C1.6%; Si4%; Mn0.3%; Al1.5%; Cr5%; Mo0.5%; S0.2%; B0.1%; Ni0.1%; P0.02% ; Rare earth 0.005%; Fe 86.675%;

[0058] (B) smelting the above-mentioned various raw materials, and hot rolling them into billets after smelting;

[0059] (C) Carry out solid solution treatment to the billet obtained in the previous step: heat the billet to 1000-1100° C. for 3-6 hours, and cool it to room temperature with oil cooling. 300°C; during the heating process, set a heat preservation step at 880°C for 1 hour.

[0060] (D) carrying out quenching treatment to above-mentioned billet;

[0061] (E) Tempering: heat the billet obtained in the previous step to 700-710°C, keep it warm for 10 hours, and cool it down to room temperature by a...

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Abstract

The invention discloses a preparation method of a high temperature-resistant alloy die steel and belongs to the manufacturing field of die materials. The high temperature-resistant alloy die steel contains 1.5%-1.8% of C, 0.5%-6% of Si, 0.2%-0.6% of Mn, 0.6%-3.2% of Al, 3%-6% of Cr, 0.5%-0.6% of Mo, 0.1%-0.2% of S, 0.01%-0.2% of B, 0.1%-0.2% of Ni, and the balance of Fe; the die material further contains 0.01-0.02% of P and 0.005% of rare earth elements. Due to the addition of Cr, the alloy steel is enabled to have oxidation resistance at a high temperature, and the hot corrosion resistance of the alloy steel is greatly improved; and Cr is bonded with C to form a hard compound so that the alloy steel has excellent wear resistance and toughness. Due to the addition of a certain amount of B, the internal ductility of the alloy steel is good and the high temperature durability of the alloy steel is improved; a certain amount of rare earth elements is added to the material so that the oxidation resistance of the alloy can be improved and the propagation of fatigue cracks can be prevented, and the alloy is enabled to have long service life and good tenacity. In short, the high temperature-resistant alloy die steel material is enabled to have excellent strength and tenacity, and is good in heat resistance and low in cost.

Description

technical field [0001] The invention relates to the field of mold materials, and more specifically, relates to a preparation method of high-temperature-resistant alloy mold steel. Background technique [0002] Mold material selection is a very important link in the whole mold making process. Mold material selection needs to meet three principles. The mold should meet the work requirements such as wear resistance, strength and toughness, the mold should meet the process requirements, and the mold should meet the economic applicability. When the blank is plastically deformed in the mold cavity, it flows and slides along the surface of the cavity, causing severe friction between the surface of the cavity and the blank, resulting in the failure of the mold due to wear. Therefore, the wear resistance of the material is one of the most basic and important properties of the mold. [0003] Hardness is the main factor affecting wear resistance. In general, the higher the hardness o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/60C21D6/00C21D1/18
CPCC21D1/18C21D6/00C22C33/06C22C38/06C22C38/34C22C38/60
Inventor 王文明
Owner 湖北日盛科技有限公司
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