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Alloy-plastic steel plate for die and production method thereof

A technology of alloy plastic and production method, which is applied in the field of alloy steel manufacturing, can solve the problems of narrow plate width, high production cost, and long delivery period, and achieve the effect of good plate shape, low cost, and short delivery period

Inactive Publication Date: 2012-11-07
WUYANG IRON & STEEL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an alloy plastic mold steel plate to solve the problem of high production cost of this type of steel plate
[0005] At the same time, the purpose of the present invention is also to provide a production method of alloy plastic mold steel plate, so as to solve the current problems of narrow width and long delivery time of this type of steel plate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The weight percentage of each component of the alloy plastic mold steel of the present embodiment is composed of: C0.35%, Si0.38%, Mn1.15%, P0.012%, S0.003%, Mo0.12%, Cr1 .51%, V0.018%, B0.0018%, Ti0.025%, and the balance is Fe and unavoidable inclusions.

[0018] The production method of the alloy plastic mold steel of the present embodiment is as follows:

[0019] (1) Smelting steps: use ultra-high power electric furnace for smelting, select high-quality steel types, use large slag flow slag operation during the melting period, and vacuum decarburization; then send it to LF refining furnace for refining, rapid deoxidation, according to the desulfurization situation, Fine-tune the contents of Mn, Mo, Cr, and V, and adjust Ti and B before hanging the bag;

[0020] (2) heating and rolling steps:

[0021] Heating: The heating system is carried out according to the heating process of group II steel, the steel billet is heated in a continuous furnace, the heating temperat...

Embodiment 2

[0027] The weight percentage of each component of the alloy plastic mold steel of this embodiment is composed of: C0.39%, Si0.38%, Mn1.22%, P0.0012%, S0.002%, Mo0.20%, Cr1. 60%, V0.020%, B0.0018%, Ti0.024%, the balance is Fe and unavoidable inclusions.

[0028] The production method of the alloy plastic mold steel in this embodiment is the same as that in Example 1 except that the 300mm thick continuous casting slab is rolled into a 150mm steel plate (compression ratio is 2) in the rolling step.

[0029] The performance parameters of the steel plate produced by the method of this embodiment are: flaw detection JB / T4730.3-2005 Class I qualified, 5-point hardness performance of the whole plate: 317HB, 323HB, 324HB, 320HB, 328HB, and the average hardness of the whole plate is 322HB.

Embodiment 3

[0031] The weight percentage of each component of the alloy plastic mold steel of this embodiment is composed of: C0.30%, Si0.20%, Mn0.80%, P0.0012%, S0.002%, Mo0.10%, Cr1. 40%, V0.010%, B0.0010%, Ti0.015%, the balance is Fe and unavoidable inclusions.

[0032] The production method of the alloy plastic mold steel in this embodiment is the same as that in Example 1 except that the 300mm thick continuous casting slab is rolled into a 200mm steel plate (compression ratio is 1.5) in the rolling step.

[0033] The performance parameters of the steel plate produced by the method of this embodiment are: the flaw detection SEL072-77 grade III is qualified, the hardness performance of the whole plate is 5 points: 311HB, 309HB, 307HB, 312HB, 315HB, and the average hardness of the whole plate is 311HB.

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Abstract

The invention relates to alloy-plastic steel plate for a die, which contains the following chemical composition by weight percent: 0.30-0.50 C, 0.20-0.50 Si, 0.80-1.80 Mn, less than or equal to 0.02 P, less than or equal to 0.01 S, 0.10-0.50 Mo, 0.001-0.003 B, 1.42-2.00 Cr, 0.015-0.04 Ti and 0.01-0.04 V, and the balance Fe and unavoidable impurities. The production method mainly includes the steps of electrosmelting, heating and rolling, tempering and hardness testing. The steel plate produced through the method is of good strength-toughness match while the welding performance of the thick plate is not reduced. The alloy-plastic steel plate has excellent processability, polishing property, corrosion resistance and abrasion resistance and currently is mainly used for the die with big size, complicated shape and high precision requirement.

Description

technical field [0001] The invention relates to an alloy plastic mold steel plate, and also relates to a production method of the alloy plastic mold steel plate, which belongs to the technical field of alloy steel manufacturing. Background technique [0002] Traditional plastic mold steel has the disadvantages of high cost and long process flow caused by high alloy content. Most of the steel used in the domestic plastic mold steel industry comes from imported or domestically produced flexible steel grades, such as NAK80 from Japan, 718 from Sweden, and P20 from the United States. The alloy content is relatively high, and the cost and price of steel plates have increased. Moreover, the prices of the above-mentioned imported steels are generally high. [0003] With the rapid development of the plastic mold steel processing industry, the mold manufacturing industry has requirements for its materials: first, high-quality materials, and second, low-cost materials. However, due ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/38C22C38/32C21C5/52C21C7/068B21B37/74C21D9/46
CPCY02P10/20
Inventor 钱泽旺谢良法韩铁水赵文忠张俊凯王新李建立张亚丽张西忠张仪杰刘建磊白永强郑京辉孟祥琪孟春
Owner WUYANG IRON & STEEL
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