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一、炉温均匀性影响工件热处理后的质量热处理炉温度均匀性与热处理后零件质量有着密切关系。例如我厂原有两台RJ-202-9T井式热处理电阻炉,深度为6m,其炉内温度差高达74℃,热处理后的零件质量低劣,淬火后硬度不均匀,故不能用于生产。后来我们对其中的一台进行了多次改造、试验、研究,使炉内温差降到±6℃以下。一年多的生产实践证明,在此台设备中处理的零件质量良好,硬度均匀,淬火后金相组织也较理想。加热温度对气体氮化和高合金钢热处理质量影响更大。加热温度差应在±5～10℃范围内。如Cr12MoV钢在不同温度下加热,
First, the uniformity of the furnace temperature after the heat treatment of the quality of heat treatment furnace temperature uniformity and the quality of parts after heat treatment are closely related. For example, our factory had two RJ-202-9T pit type heat treatment resistance furnace, depth of 6m, the furnace temperature difference as high as 74 ℃, after the heat treatment of poor quality parts after quenching uneven hardness, it can not be used in the production. Later, we carried out a number of one of the many transformation, testing, research, so that the furnace temperature dropped to ± 6 ℃ below. More than a year of production practice has proved that the quality of the parts processed in this equipment is good and the hardness is uniform. The microstructure after quenching is also ideal. The heating temperature has a greater impact on the quality of gas nitriding and high alloy steel heat treatment. Heating temperature difference should be within ± 5 ~ 10 ℃ range. Such as Cr12MoV steel heated at different temperatures,