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H13 die steel and preparation method thereof

A technology of mold steel and molten steel, applied in the field of wear-resistant materials, can solve the problems of high addition of precious alloy elements, low material utilization rate, long production cycle, etc., and achieve the goals of shortening the production cycle, improving mechanical properties, and improving hardenability Effect

Inactive Publication Date: 2011-11-16
江苏环立板带轧辊有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Not only is there a large amount of precious alloy elements added, but also forging is required, resulting in high energy consumption, low material utilization, long production cycle and high production cost

Method used

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  • H13 die steel and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Using 5000 kg medium frequency induction furnace to smelt H13 steel, the specific process steps are:

[0047] 1) First mix and heat scrap steel, carbon ferrochrome, low carbon ferrochrome, tungsten slag ferroalloy and ferromolybdenum. When the temperature of molten steel reaches 1558°C, add ferrosilicon and ferromanganese, then add metal aluminum and ferrovanadium in sequence, and the furnace After the pre-adjusted composition is qualified, the temperature of molten steel is raised to 1647°C, and ferro-titanium and nitrogen-containing ferromanganese are added in sequence, and then released from the furnace;

[0048] 2) When the molten steel enters 30-50% of the ladle, ferron-boron and yttrium-based rare earth with a particle diameter of 1.5-3.5 mm are wrapped with a steel plate with a thickness of less than 0.5 mm, and then rushed into the ladle with the molten steel;

[0049] 3) When the temperature of the molten steel reaches 1518°C, pour the molten steel dire...

Embodiment 2

[0052] Using 5000 kg medium frequency induction furnace to smelt H13 steel, the specific process steps are:

[0053] 1) First mix and heat scrap steel, carbon ferrochrome, low carbon ferrochrome, tungsten slag ferroalloy and ferromolybdenum. When the temperature of molten steel reaches 1561℃, add ferrosilicon and ferromanganese, then add metal aluminum and ferrovanadium in turn, and the furnace After the pre-adjusted composition is qualified, the temperature of the molten steel is raised to 1604°C, and ferro-titanium and nitrogen-containing ferromanganese are added in sequence, and then released from the furnace;

[0054] 2) When the molten steel enters 30-50% of the ladle, ferron-boron and yttrium-based rare earth with a particle diameter of 1.5-3.5 mm are wrapped with a steel plate with a thickness of less than 0.5 mm, and then rushed into the ladle with the molten steel;

[0055] 3) When the temperature of the molten steel reaches 1491°C, pour the molten steel direc...

Embodiment 3

[0058] Using 10,000 kg power frequency induction furnace to smelt H13 steel, the specific process steps are:

[0059] 1) Firstly, scrap steel, carbon ferrochrome, low-carbon ferrochrome, tungsten slag ferroalloy and ferromolybdenum are mixed and heated and melted. When the temperature of molten steel reaches 1556°C, ferrosilicon and ferromanganese are added, and then metal aluminum and ferrovanadium are added in sequence. After the pre-adjusted composition is qualified, the temperature of the molten steel is raised to 1630°C, and ferro-titanium and nitrogen-containing ferromanganese are added in sequence, and then released from the furnace;

[0060] 2) When the molten steel enters 30-50% of the ladle, ferron-boron and yttrium-based rare earth with a particle diameter of 1.5-3.5 mm are wrapped with a steel plate with a thickness of less than 0.5 mm, and then rushed into the ladle with the molten steel;

[0061] 3) When the temperature of the molten steel reaches 1505°C,...

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Abstract

The invention relates to H13 die steel and a preparation method thereof, and belongs to the technical field of wear-resistant materials. The H13 die steel comprises the following chemical elements in percentage by weight: 0.40 to 0.46 percent of C, 6.00 to 6.30 percent of Cr, 0.50 to 0.65 percent of V, 0.30 to 0.45 percent of Mo, 0.85 to 1.05 percent of Mn, 1.25 to 1.55 percent of Si, 0.12 to 0.25 percent of W, 0.008 to 0.018 percent of Nb, 0.008 to 0.015 percent of Ta, 0.08 to 0.12 percent of Ti, 0.003 to 0.006 percent of B, 0.08 to 0.15 percent of Al, 0.03 to 0.06 percent of N, 0.06 to 0.12 percent of Y, less than 0.025 percent of S, less than 0.030 percent of P and the balance of Fe. The H13 die steel has the advantages that: the content of precious alloy elements, namely molybdenum and vanadium is low, the H13 die steel is not required to be forged, and forging can be replaced by casting, so that the cost of the H13 steel is obviously reduced; the performance of the H13 steel can be obviously improved, and a tungsten slag iron alloy is recycled; a solidification structure can be obviously refined, and the mechanical property of the H13 steel is improved; and the H13 steel has high wear resistance and is used as a hot working die, and the service life is prolonged.

Description

technical field [0001] The invention relates to die steel and a preparation method thereof, in particular to an H13 die steel and a preparation method thereof, and belongs to the technical field of wear-resistant materials. Background technique [0002] Processing molded parts with molds has a series of advantages such as high production efficiency, good quality, material saving and low cost, and has a wide range of applications. Hot work die steel is an important type of die material. Since hot work dies work at high temperatures for a long time, their structure will change as the service time prolongs, and their performance will change accordingly. Therefore, this requires Hot work die steel has good strength and toughness, cold and heat fatigue performance and high temperature thermal stability. [0003] 4Cr5MoSiV1 (that is, H13 steel, the same below) is a medium-alloy hot work die steel that can be used for hot forging dies, hot extrusion dies, and die-casting dies. H1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/34C22C38/32C22C33/06B22D1/00C21D1/18
Inventor 浦建明浦嫣花符寒光
Owner 江苏环立板带轧辊有限公司
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