Container lock products and their heat treatment process and equipment

Abstract

A container lock product and its heat treatment process and equipment, wherein the product material is 25CrMnSi, and its heat treatment includes: normalizing: temperature 920°C±10°C, air cooling after holding time for 120 minutes; quenching: temperature 880°C±10°C , Water cooling after holding time for 180 minutes; tempering: temperature 610°C±10°C, air cooling after holding time for 180 minutes. At the same time, corresponding heat treatment equipment is provided. The tensile strength of the container lock products obtained by the above heat treatment process and equipment meets: 850MPa, the yield strength meets: 700MPa, and the hardness HB: 240-280, which meets the mechanical requirements of marine container lock products and has low metal cost and good quality. Appropriate strength, hardness, plasticity and toughness, as well as the characteristics of simple heat treatment process equipment, convenient operation, and little environmental pollution.

Description

Technical field [0001] The invention relates to a material and its heat treatment process and equipment, in particular to a container lock. Background technique [0002] The strength, hardness, plasticity and toughness of materials, such as alloy steel, are usually a contradictory unity. Choosing reasonable alloy composition and content to achieve the optimal alloy material has always been the direction of the industry's efforts. In view of the special working requirements of marine container locks, choosing reasonable strength, hardness, plasticity and toughness materials is a technical problem to be solved in this field. [0003] In the prior art, 42CrMo material is used and corresponding heat treatment process is applied at the same time as the material of the lock. The heat treatment includes: [0004] 1. Normalizing: In the mesh belt furnace, the normalizing temperature is 900℃±10℃, the holding time is 120 minutes, and then the air is cooled; [0005] 2. Quenching: in the mesh...

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.

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