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A kind of high toughness plastic mold steel and its production method

A technology of plastic mold steel and production method, which is applied in the field of high toughness plastic mold steel and its production, can solve the problems that cannot fully satisfy the production and processing, and achieve the effects of improving plasticity and toughness, reducing impurity content, and reducing residue

Active Publication Date: 2019-10-29
天长市协正塑业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Nowadays, although the problem of plastic mold steel has made corresponding progress, with the development of industry, the existing plastic mold steel can no longer fully meet the needs of production and processing, so it is very important to improve the performance of plastic mold steel.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A high-toughness plastic mold steel, the plastic mold steel includes the following components in mass percentage: C: 0.24%, Ni: 0.64%, Mo: 0.46%, S: 0.072%, Cr: 8.17%, Mn: 1.68% , W: 0.25%, V: 0.17%, Mg: 0.026%, Sr: 0.17%, Si: 0.16%, and the balance is Fe and other impurities.

[0023] Described high-toughness plastic mold steel comprises the following manufacturing steps:

[0024] (1) Put each component material in a smelting furnace, melt it into molten steel under high temperature conditions, then pour the molten steel into a steel ingot, place it in an electric furnace to adjust the temperature to 1000°C-1200°C, and then add limestone for heat preservation forging for 2 hours;

[0025] (2) placing the steel forged in the above step (1) in a vacuum induction furnace, melting and pouring into a consumable electrode in the induction furnace;

[0026] (3) Put the consumable electrode in step (2) back into the electric furnace for remelting and refining, control solidif...

Embodiment 2

[0034] A high-toughness plastic mold steel, the plastic mold steel includes the following components in mass percentage: C: 0.32%, Ni: 1.02%, Mo: 0.62%, S: 0.088%, Cr: 10.26%, Mn: 1.43% , W: 0.30%, V: 0.24%, Mg: 0.079%, Sr: 0.26%, Si: 0.21%, and the balance is Fe and other impurities.

[0035] Described high-toughness plastic mold steel comprises the following manufacturing steps:

[0036] (1) Put each component material in a smelting furnace, melt it into molten steel under high temperature conditions, then pour the molten steel into a steel ingot, place it in an electric furnace to adjust the temperature to 1000°C-1200°C, and then add limestone for heat preservation forging for 2 hours;

[0037] (2) placing the steel forged in the above step (1) in a vacuum induction furnace, melting and pouring into a consumable electrode in the induction furnace;

[0038] (3) Put the consumable electrode in step (2) back into the electric furnace for remelting and refining, control solidi...

Embodiment 3

[0046] The products of the above-mentioned Examples 1-2 are numbered A and B respectively. In addition, the common 3Cr2Mo plastic mold steel and 3Cr2MnNiMo plastic mold steel on the market are selected as control groups, and the hardness test, tensile test and compression resistance test are respectively carried out.

[0047] Hardness testing: the sample is ground in sequence with abrasive cloth or sandpaper whose particle size meets the requirements of GB2477-81, and the ground sample is polished on an automatic polishing machine. The polishing parameters are: time: 1 minute; pressure: 180N; speed: : 350N / min.

[0048] Tensile test: The sample was subjected to a tensile test using a SANS universal testing machine at room temperature, with the chuck moving speed at 0.3rnm / min, and a computer recorder was used to record the test results.

[0049] Anti-pressure test: The sample is at room temperature, using a JB30B impact testing machine, in accordance with the GB2106-80 standar...

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Abstract

The invention provides a kind of high-toughness plastic mold steel and a production method thereof and relates to the technical field of production of plastic mold steel. The plastic mold steel comprises, by mass, 0.24-0.32% of C, 0.64-1.02% of Ni, 0.46-0.62% of Mo, 0.072-0.088% of S, 8.17-10.26% of Cr, 1.68-1.43% of Mn, 0.25-0.30% of W, 0.17-0.24% of V, 0.026-0.079% of Mg, 0.17-0.26% of Sr, 0.16-0.21% of Si, and the balance Fe and other impurities. The plastic mold steel is mainly manufactured through repeated smelting and forging and heat treatment. Through the high-toughness plastic mold steel and the production method thereof, the defects in the prior art are overcome, the toughness of the plastic mold steel is improved, and the content of impurities in the plastic mold steel is reduced. The high-toughness plastic mold steel has the advantages of being stable, resistant to pressure and wide in application range.

Description

technical field [0001] The invention relates to the technical field of production of plastic mold steel, in particular to a high-toughness plastic mold steel and a production method thereof. Background technique [0002] With the application of plastic products in industry and daily life more and more widely, the demand for mold steel in the plastic mold industry is also increasing. In plastic molding processing, the quality of the mold is self-evident for the guarantee of product quality. Plastic molds are currently developing in the direction of precision, large-scale and multi-cavity, and the requirements for the performance of plastic mold steel are getting higher and higher. The performance of plastic mold steel should be based on the type of plastic, product use, production batch, dimensional accuracy and Depending on the surface quality requirements. [0003] In the past, there was no special plastic mold steel in our country. Generally, plastic molds are made of no...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/44C22C38/60C22C38/58C22C38/46C22C38/02C22C33/04C21D6/00C21D1/18C21D1/26C21D1/28
CPCC21D1/18C21D1/26C21D1/28C21D6/004C22C33/04C22C38/002C22C38/02C22C38/44C22C38/46C22C38/58C22C38/60
Inventor 王聘宗妮杨振翔葛天航薛勇王建邦
Owner 天长市协正塑业有限公司
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