Plastic mold steel plate and processing method thereof

A technology of plastic molds and processing methods, applied in metal material coating process, coating, melting spray plating and other directions, to achieve the effects of good wear resistance, high thermal conductivity and broad market prospects

Inactive Publication Date: 2019-09-13
QINGDAO DONGSHENG HI TECH MOLDING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the plastic mold steel plates commonly used in the market are difficult to meet the requirements of high thermal conductivity, thermal strength, wear resistance, impact toughness, hardenability, thermal stability and thermal fatigue resistance.

Method used

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  • Plastic mold steel plate and processing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A plastic mold steel plate, the chemical composition of the mold steel plate is calculated by weight percentage: C: 0.42%; Si: 0.35%; Mn: 1.00%; Mo: 0.65%; Cr 0.42%; V: 0.65%; Bi 0.12 %; Co 0.20%; W 0.10%; Er: 0.23%; Y: 0.09%;

[0025] The processing method of described plastic mold steel plate, comprises the steps:

[0026] (1) Weigh the C, Si, Mn, Mo, Cr, V, Bi, Fe raw materials according to the above proportions, put them into the electric arc furnace for melting, after refining, pour the steel ingot under vacuum condition, and anneal the steel ingot at 830℃ after cooling. Stress treatment to obtain electrode blank;

[0027] (2) Place the electrode blank in electroslag remelting and place it in an electroslag remelting furnace under the protection of an inert gas for electroslag remelting treatment to obtain an electroslag ingot; then anneal the electroslag ingot at 830°C;

[0028] (3) Put the electroslag ingot into a high-frequency induction melting furnace, heat ...

Embodiment 2

[0032] A plastic mold steel plate, the chemical composition of the mold steel plate is calculated by weight percentage: C: 0.38%; Si: 0.46%; Mn: 1.18%; Mo: 0.58%; Cr 0.38%; V: 0.55%; Bi 0.08 %; Co 0.16%; W 0.12%; Er: 0.15%; Y: 0.13%;

[0033] The processing method of described plastic mold steel plate, comprises the steps:

[0034] (1) Weigh the C, Si, Mn, Mo, Cr, V, Bi, Fe raw materials according to the above proportions, put them into the electric arc furnace for melting, after refining, pour the steel ingot under vacuum condition, and anneal the steel ingot at 850°C after cooling. Stress treatment to obtain electrode blank;

[0035] (2) Place the electrode blank in electroslag remelting and place it in an electroslag remelting furnace under the protection of an inert gas for electroslag remelting treatment to obtain an electroslag ingot; then anneal the electroslag ingot at 850°C;

[0036] (3) Put the electroslag ingot into a high-frequency induction melting furnace, heat...

Embodiment 3

[0040] A plastic mold steel plate, the chemical composition of the mold steel plate is calculated by weight percentage: C: 0.45%; Si: 0.38%; Mn: 0.8%; Mo: 0.65%; Cr 0.42%; V: 0.65%; Bi 0.12%; Co 0.24%; W 0.08%; Er: 0.22%; Y: 0.08%;

[0041] The processing method of described plastic mold steel plate, comprises the steps:

[0042] (1) Weigh the C, Si, Mn, Mo, Cr, V, Bi, Fe raw materials according to the above proportions, put them into the electric arc furnace for melting, after refining, pour the steel ingot under vacuum condition, and anneal the steel ingot at 850°C after cooling. Stress treatment to obtain electrode blank;

[0043] (2) Place the electrode blank in electroslag remelting and place it in an electroslag remelting furnace under the protection of an inert gas for electroslag remelting treatment to obtain an electroslag ingot; then anneal the electroslag ingot at 850°C;

[0044] (3) Put the electroslag ingot into a high-frequency induction melting furnace, heat it ...

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Abstract

The invention discloses a plastic mold steel plate and a processing method thereof. The plastic mold steel plate comprises chemical compositions including, by weight, 0.35%-0.45% of C, 0.35%-0.50% ofSi, 0.80%-1.2% of Mn, 0.45%-0.75% of Mo, 0.35%-0.45% of Cr, 0.45%-0.7% of V, 0.05%-0.15% of Bi, 0.15%-0.25% of Co, 0.05%-0.15% of W, 0.15%-0.25% of Er, 0.05%-0.15% of Y and the balance Fe. According to the plastic mold steel plate and the processing method, the Bi, the Co, the W, the Er, the Y and other elements are added into mold alloy materials, the ratio of all chemical raw materials is adjusted, a prepared mold has performance such as high strength, high thermal conductivity, impact resistance, good thermal stability, good wear resistance and cold and heat fatigue resistance. The processing method of the plastic mold steel plate comprises flame spraying and laser remelting treatment, and the cold and heat fatigue resistance, the wear resistance and the thermal stability of the mold steel plate are obviously improved.

Description

technical field [0001] The invention relates to the technical field of mold steel plates, in particular to a plastic mold steel plate and a processing method thereof. Background technique [0002] Molds are the basic technological equipment for mass production of industrial products. 70% of rough machining and 5% of finishing machining of industrial parts in machinery manufacturing need molds to complete. Plastic mold steel is an important mold material, which is widely used in various industries such as household appliances, electronics and communication equipment, plastic products, automobiles and motorcycles. Die steel can usually be divided into three categories: hot work die steel, cold work die steel and plastic die steel. Hot stamping die steel belongs to hot work die steel, mainly used to obtain ultra-high-strength stamping parts. It is one of the die steels with a sharp increase in usage and the largest consumption in the past 30 years, and its working conditions a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/22C22C38/24C22C38/30C21D1/26C21D1/32C21D8/02C23C4/129C23C4/08C23C4/18
CPCC21D1/26C21D1/32C21D8/0221C22C38/002C22C38/005C22C38/02C22C38/04C22C38/22C22C38/24C22C38/30C23C4/08C23C4/129C23C4/18
Inventor 房雪莲丛爱君陈立平刘印范
Owner QINGDAO DONGSHENG HI TECH MOLDING TECH CO LTD
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