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A kind of method for preparing wear-resistant plastic mold

A technology for plastic molds and molds, which is applied in the field of mold manufacturing, can solve the problems of decreased wear resistance of molds, poor cutting performance of mold steel, and corrosion pits of mirror surface cavity, so as to improve corrosion resistance, enhance corrosion resistance, and save money. The effect of resources

Active Publication Date: 2017-10-27
CHUZHOU DIMENGDE MOLD MFG
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  • Claims
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Problems solved by technology

[0003] Due to the response of various physical and chemical properties between the molding surface of the mold and the raw material to be molded, usually there will be many problems on the contact surface between the molding surface of the mold and the raw material to be molded, for example, due to the cutting performance of the mold steel of the prepared plastic molding mold Poor, the corrosion resistance is not strong, after a period of use, the wear resistance of the mold will decrease, and after the mold is placed for a period of time, corrosion spots will appear in the mirror cavity

Method used

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Embodiment

[0026] This embodiment provides a method for preparing a wear-resistant plastic mold, comprising the following steps:

[0027] (1) Equipped with the chemical composition of the raw material mold steel, the weight percentage of each composition is: C 0.4%, Si 0.8%, Cr 1.4%, Ni 0.7%, Mo 0.5%, Mn0 0.18%, V 0.6%, P ≤ 0.02%, S≤0.05%, the rest is Fe and unavoidable impurities;

[0028] (2) Dosing according to the above-mentioned components and weight percentages, and putting the materials into a vacuum degassing furnace for smelting. When the molten steel melting temperature is 1450-1650°C, add ferrochromium nitride to the molten steel for smelting;

[0029] (3) Cast the molten steel melted in step (2) into a steel ingot, then cool down the molded steel ingot to 280-290°C, then heat it to 670-770°C, keep it warm for 5-6 hours, at 30°C / hour Cool to 450°C, and then carry out electroslag remelting to further refine the ingot;

[0030] (4) After the refined electroslag steel ingot is ...

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Abstract

The invention relates to a method for preparing a mold, and specifically provides a method for preparing a wear-resistant plastic mold, which includes preparing the chemical components of the mold steel, melting, pouring steel ingots, electroslag remelting, rolling, heat treatment, and cutting to obtain the mold . The manufacturing method of the wear-resistant plastic mold provided by the invention has simple process, saves resources, and the manufactured plastic mold is wear-resistant and oxidation-resistant, has a long service life, improves the quality of the product produced by the mold, and has low production cost.

Description

technical field [0001] The invention relates to a method for manufacturing a mold, in particular to a method for preparing a wear-resistant plastic mold. Background technique [0002] Mold, various molds and tools used in industrial production for injection molding, blow molding, extrusion, die-casting or forging forming, smelting, stamping and other methods to obtain the required products. In short, a mold is a tool used to shape an object. This tool is composed of various parts, and different molds are composed of different parts. It mainly realizes the processing of the shape of the article through the change of the physical state of the formed material. There are many types of molds, which can be divided into: ①Molds for processing metals according to the processing objects and processing technology. ②Processing non-metallic and powder metallurgy molds. Including plastic molds (such as injection molds, compression molds and extrusion molds, etc.), rubber molds and pow...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/46C21D1/18B23P15/24
Inventor 朱余宏胡丽亚
Owner CHUZHOU DIMENGDE MOLD MFG
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