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Method for improving performance of mold material for automobile part production

A technology for auto parts and mold materials, which is applied in the field of improving the performance of mold materials used in the production of auto parts, can solve the problems affecting the quality of automobile assembly, long material processing cycle, and high processing costs, and achieves improved performance and aesthetics. Friction coefficient, the effect of speeding up the filling speed

Active Publication Date: 2019-12-03
MAANSHAN SANCHUAN MACHINERY MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] With the rapid development of the industry, the disadvantages of ductile iron mold materials are increasingly exposed: long material processing cycle, high processing costs, low combination accuracy, and mechanical performance problems such as roughening during the stamping process, which seriously affect the quality of automobile assembly

Method used

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  • Method for improving performance of mold material for automobile part production

Examples

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Embodiment 1

[0020] A method for improving the performance of mold materials used in the production of auto parts. The prepared nodularizing agent is added after the cast iron is smelted, and the nodularizing agent is treated by spheroidizing reaction. Include the following steps:

[0021] (1) Weigh 20 grams of silicon nitride and grind for 2 hours, add 2.7 grams of nano-titanium dioxide and mix evenly, then in an argon atmosphere, heat up to 900 ° C, calcine and oxidize for 1 hour, naturally cool to room temperature and place in the prepared acid Soak in the liquid for 4 hours, heat the oil bath to 88°C under continuous stirring, add 1.3 g of sodium hydroxide, stop stirring, age for 8 hours, naturally cool down to 20°C, use a high-speed centrifuge to separate the solid precipitate, and use ethanol Washed until neutral, placed in a drying oven at 90°C for 7 hours to obtain Si3N4 / TiO2 composite material;

[0022] (2) Weigh 7.5 grams of cerium oxide and soak it in a 60°C ethylene glycol aq...

Embodiment 2

[0031] A method for improving the performance of mold materials used in the production of auto parts. The prepared nodularizing agent is added after the cast iron is smelted, and the nodularizing agent is treated by spheroidizing reaction. Include the following steps:

[0032] (1) Weigh 21 grams of silicon nitride and grind for 2.5 hours, add 2.75 grams of nano-titanium dioxide and mix evenly, then in an argon atmosphere, heat up to 910 ° C, calcine and oxidize for 1.5 hours, naturally cool to room temperature and place in the prepared acid Soak in the liquid for 4.5 hours, heat the oil bath to 89°C under continuous stirring, add 1.45 grams of sodium hydroxide, stop stirring, age for 9 hours, naturally cool down to 22°C, use a high-speed centrifuge to separate the solid precipitate, and use ethanol Washed to neutrality, and dried in a drying oven at 95°C for 7.5 hours to obtain a Si3N4 / TiO2 composite material;

[0033] (2) Weigh 7.8 grams of cerium oxide and soak it in a 62°...

Embodiment 3

[0042] A method for improving the performance of the mold material used in the production of auto parts. After the cast iron is smelted, the prepared nodulizer is added, the nodulizer is processed, the slag is removed, and then poured and molded, and processed into a mold. The preparation process of the nodulizer Include the following steps:

[0043] (1) Weigh 22 grams of silicon nitride and grind for 3 hours, add 2.8 grams of nano-titanium dioxide and mix evenly, then heat up to 920°C in an argon atmosphere, calcine and oxidize for 2 hours, cool naturally to room temperature and place in the prepared acid Soak in the liquid for 5 hours, heat up to 90°C in an oil bath with continuous stirring, add 1.6 grams of sodium hydroxide, stop stirring, age for 10 hours, naturally cool down to 25°C, use a high-speed centrifuge to separate the solid precipitate, use ethanol Wash until neutral, and dry in a drying oven at 100°C for 8 hours to obtain a Si3N4 / TiO2 composite material;

[004...

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Abstract

The invention relates to the technical field of new material processing, and discloses a method for improving the performance of a mold material for automobile part production. The comprehensive performance of the mold material is improved by researching the microstructure organization level and the mechanical property; a prepared nodulizer is added after cast iron is smelted for carrying out spheroidizing reaction treatment; in the nodulizer material preparation method, silicon nitride and nanoscale titanium dioxide are used as raw materials for carrying out a reaction to prepare a Si3N4 / TiO2composite material, and the material characteristics of same can solve the defects of an existing nodular cast iron material, the mechanical performance and the abrasion resistance of machined and prepared parts are remarkably improved, the galling resistance is improved, the precision of the parts is remarkably improved, and therefore the service life of an assembly is prolonged, and the use performance and attractiveness of automobile parts are improved.

Description

technical field [0001] The invention belongs to the technical field of new material processing, and in particular relates to a method for improving the performance of a mold material used in the production of auto parts. Background technique [0002] With the development of the automotive industry, various types of auto parts are becoming increasingly lean. The production quality of parts depends on the performance of the mold. Most of the existing auto parts are made of ductile cast iron mold materials. [0003] Ductile iron is a high-strength cast iron material developed in the 1950s. Its comprehensive performance is close to that of steel. Based on its excellent performance, it has been successfully used to cast some complex forces, strength, toughness, wear resistance. Parts with high performance requirements. Ductile iron has rapidly developed into a widely used cast iron material, second only to gray cast iron. The so-called "replacing steel with iron" mainly refers...

Claims

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Application Information

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IPC IPC(8): C21C1/10C22C33/08
CPCC21C1/105C22C33/006C22C33/08Y02P10/20
Inventor 李孙德
Owner MAANSHAN SANCHUAN MACHINERY MFG CO LTD
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