Easy-to-demould, high-hardness and pre-hardened plastic mould steel, and preparation method thereof

A technology of plastic mold steel and high hardness, applied in the field of plastic mold steel products, can solve the problems of many surface defects, low service life, poor wear resistance, etc., and achieve the effect of dense organization, short manufacturing cycle, and remarkable toughening and toughening.

Inactive Publication Date: 2015-12-30
WUHU BAOYI AMUSEMENT EQUIP
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  • Abstract
  • Description
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Problems solved by technology

[0003] At present, the types of die steel mainly include cold work die steel, hot work die steel, plastic die steel, etc., among which plastic die steel accounts for the largest proportion, and the performance of die steel is directly related to the quality of processed plastic products. The characteristics of plastic products have high requirements for plastic mold steel in terms of corrosion resistance, dimensional stability, surface wear resistance, and polishing. The existing plastic mold steel mainly has low hardness, poor wear resistance, and the use of Problems to be solved such as low service life and many surface defects

Method used

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Embodiment Construction

[0013] The weight percent of each component in the mold steel of this example is: C: 0.3%, Si: 2.0%, Mn: 1.0%, Cr: 6.5%, Ni: 5.5%, Cu: 0.2%, Sr: 0.2%, Ta : 0.4%, P≤0.02%, S≤0.01%, compound modifier: 0.01%, the rest is Fe and unavoidable impurities.

[0014] Wherein the composite modificator is made of the following raw materials in parts by weight: nano-rare earth oxide 2, nano-titanium carbide 8, graphene oxide 1, appropriate amount of absolute ethanol, PEG-4000.1; its preparation method is: first dissolve PEG-400 in Add nano-rare earth oxides and graphene oxide to absolute ethanol, and ultrasonically stir for 40 minutes. After they are completely dispersed, add nano-titanium carbide and continue ultrasonically stirring for 1 hour. After stirring, dry them in an oven at 350°C. After drying, the powder is fully ground and dispersed to obtain a composite modificator in which rare earth oxide graphene oxide is compositely coated with nano-titanium carbide.

[0015] The preparat...

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PUM

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Abstract

The invention discloses an easy-to-demould, high-hardness and pre-hardened plastic mould steel. The ratio of Ni, Cr, Cu, Ta and other elements in the steel is appropriately increased on the basis of a conventional pre-hardened plastic mould steel ratio, meanwhile, the consumption of other alloy elements is controlled, so that the mechanical property and the processability of an alloy material are further improved on the basis of ensuring the mechanical property of the traditional plastic mould steel. The plastic mould steel provided by the invention is high in hardness and crack resistance, dense in organization, smooth in surface and unlikely to damage; plastic can realize demoulding easily; through the addition of a rare earth oxide-oxidized graphene cladded nano-tungsten carbide compound modifier, the organizational structure of the mould steel is refined, the interface compatibility among crystals is improved, the toughening enhancing effect is significant, and the modification effect is uniform and stabilize. A preparation method for the mould steel is simple, efficient, and short in manufacturing cycle; the steel is durable and has a great production application value.

Description

technical field [0001] The invention relates to the technical field of plastic mold steel products, in particular to an easy-release high-hardness pre-hardened plastic mold steel and a preparation method thereof. Background technique [0002] With the rapid development of automobiles, tractors, motors, radios, household appliances and national defense industries, non-cutting processes such as cold stamping, extrusion, die forging and die-casting are widely used, and the demand for molds is increasing. There are also higher and higher requirements for the steel types of the mold, the metallurgical production of the steel and the heat treatment quality of the steel. [0003] At present, the types of die steel mainly include cold work die steel, hot work die steel, plastic die steel, etc., among which plastic die steel accounts for the largest proportion, and the performance of die steel is directly related to the quality of processed plastic products. The characteristics of p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/58C22C38/48C22C38/42C22C33/04C21D8/00
Inventor 张庆
Owner WUHU BAOYI AMUSEMENT EQUIP
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