Seatainer lockset material and heat treatment process thereof

A container and lock technology, applied in heat treatment furnaces, heat treatment equipment, manufacturing tools, etc., can solve the problems of complex process, poor plasticity, poor toughness, and high cost, and achieve the effects of simple process equipment, good and suitable strength, and low metal cost.

Inactive Publication Date: 2011-05-04
宁波吉威熔模铸造有限公司
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  • Summary
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the existing material 42CrMo uses alloy steel with precious metals, and its material cost is relatively high; at the same time, during the heat treatment process, especially after quenching, the amount of bent-crystal martensite begins to increase, and its plasticity and toughness are poor; Furthermore, the process in heat treatment is relatively complicated, and the cost is high. At the same time, heat treatment is easy to produce more environmental pollution.

Method used

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Embodiment Construction

[0013] In order to solve the above technical problems, the present invention provides a new type of ship container lock material and its heat treatment process, wherein the material is 25CrMnSi. The material avoids the use of relatively expensive alloy metal elements in the prior art, so that the metal cost is reduced. At the same time, this technology 25CrMnSi is used as low-carbon steel (carbon content less than or equal to 0.30%), and the structure of low-alloy steel is mainly martensite after quenching, which can ensure that it has the strength and hardness of the existing technology and has high plasticity. ,toughness. However, the carbon content of 42CrMo in the prior art is greater than 0.30%. After quenching, the amount of bent crystal martensite begins to increase, and the plasticity and toughness are poor under the same strength and hardness conditions. Therefore, the use of the 25CrMnSi material in this technology not only ensures the requirements of mechanical pro...

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Abstract

The invention relates to a novel seatainer lockset material and a heat treatment process thereof, wherein the material is 25CrMnSi. The heat treatment process comprises the following steps: normalizing at 920+ / -10 DEG C for 120 minutes, performing air cooling; quenching at 880+ / -10 DEG C for 180 minutes, performing water cooling; tempering at 610+ / -10 DEG C for 180 minutes, and performing air cooling. The tensile strength of the lockset material is 850Mpa, the yield strength is 700MPa, the Brindle hardness number (HB) is 240-280; and the material can meet the mechanical requirements of the seatainer lockset material and be characterized in that the metal cost is low, the material has good and proper strength, hardness, plasticity and toughness, the heat treatment processing equipment is simple, the operation is convenient and the environment pollution is low.

Description

technical field [0001] The invention relates to a material and a heat treatment process thereof, especially applied to a ship container lock. Background technique [0002] The strength, hardness, plasticity and toughness of materials, such as alloy steel, are usually a contradictory unity. Selecting a reasonable alloy composition and content to achieve the optimal alloy material has always been the direction of efforts in the industry. For the special work requirements of the marine container locks, choosing reasonable strength, hardness, plasticity and toughness materials is the technical problem to be solved in this field. [0003] In the prior art, 42CrMo material is used and a corresponding heat treatment process is applied at the same time as the material for the ship container lock. The heat treatment includes: [0004] 1. Normalizing: In the mesh belt furnace, the normalizing temperature is 900°C±10°C, and the holding time is 120 minutes, then air cooling; [0005...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D9/00C21D1/28C21D1/18
Inventor 罗绍康
Owner 宁波吉威熔模铸造有限公司
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