Martensite-granular bainite plastic die steel and manufacturing method thereof

A technology of plastic mold steel and granular bainite, which is applied in the field of iron and steel material manufacturing, can solve the problems of failure to form plastic steel series and lagging development of plastic mold steel, and achieve low preparation cost, few processing defects, and excellent comprehensive performance Effect

Inactive Publication Date: 2011-01-26
ADVANCED MFG TECH CENT CHINA ACAD OF MASCH SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

With the rapid development of my country's plastics industry, my country's plastic mold industry has also developed by leaps and bounds, and its output value has leapt to the first place in the

Method used

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  • Martensite-granular bainite plastic die steel and manufacturing method thereof
  • Martensite-granular bainite plastic die steel and manufacturing method thereof

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preparation example Construction

[0017] Table 2 Preparation process of plastic mold steel

[0018]

[0019] Table 3 Martensite volume percentage and properties of plastic mold steel

[0020]

Embodiment 1

[0022] The mass fraction of each element in the target product is shown in Example 1 in Table 1. The steel of the present invention was prepared according to the process shown in Example 1 of Table 2. The martensite volume percentage and properties of the plastic mold steel are shown in Example 1 of Table 3.

Embodiment 2

[0024] The mass fraction of each element in the target product is shown in Example 2 in Table 1. The steel of the present invention was prepared according to the process shown in Example 2 of Table 2. The martensite volume percentage and properties of the plastic mold steel are shown in Example 2 of Table 3.

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Abstract

The invention relates to martensite-granular bainite plastic die steel and a manufacturing method thereof, and belongs to the field of manufacturing of steel materials. The die steel consists of martensite and granular bainite, wherein the martensite accounts for 60 to 90 volume percent of the steel. The manufacturing method comprises the following steps of: performing hot processing, cooling to room temperature, heating a material to the temperature of between 800 and 920 DEG C again, preserving the heat, cooling to room temperature at a speed of 0.02 to 20 DEG C/second, and tempering at the temperature of between 100 and 600 DEG C to obtain the plastic die steel. The die steel has the advantages of high strength, elongation and impact toughness.

Description

technical field [0001] The invention belongs to the field of iron and steel material manufacturing, and in particular relates to a martensite-added granular bainite plastic mold steel and a preparation method thereof. Background technique [0002] With the rapid promotion and application of plastic products, the production and technology of plastic molds have achieved rapid development in recent years, and the corresponding steel for plastic molds has also achieved rapid development. The total output value of plastic molds in some advanced industrial countries in the world has accounted for nearly half of the total output value of molds, and this proportion is still rising. Plastic mold steel has also formed a special steel series. With the rapid development of my country's plastics industry, my country's plastic mold industry has also developed by leaps and bounds, and its output value has leapt to the first place in the total output value of the mold industry. However, the...

Claims

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Application Information

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IPC IPC(8): C22C38/22C22C38/38C22C33/04C21D8/00B29C33/38
Inventor 陈蕴博左秀荣王淼辉葛学元李勇王振伟杨晓
Owner ADVANCED MFG TECH CENT CHINA ACAD OF MASCH SCI & TECH
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