Carburizing steel bearing quenching mold

Abstract

The invention relates to a bearing quenching mold, in particular to a carburizing steel bearing quenching mold in the heat treatment process of a wagon and belongs to the technical field of bearings.An upper mold and a lower mold are included; the lower mold is of a cone frustum structure; the circumferential side wall of the lower mold is uniformly provided with a plurality of oil passing grooves in the longitudinal direction, and each oil passing groove is provided with an oil passing hole; a transverse oil passing hole is added for the mold, quenching oil is circulated both inside and outside the quenching mold, and the quenching cooling capacity is improved; the oil grooves for oil passing of the mold are widened, the oil passing amount is large, the mold quenching and cooling capacity is further improved, the carburizing steel bearing core hardness is improved, and therefore the heat treatment quality and the service life of the wagon bearing are guaranteed; and the carburizing steel bearing quenching mold after being optimized thoroughly solves the problem that core hardness is low.

Description

technical field [0001] The invention relates to a bearing quenching die, in particular to a quenching die for carburizing steel bearings in the heat treatment process of railway wagons, and belongs to the technical field of bearings. Background technique [0002] In recent years, with the development of my country's manufacturing industry, the shape of bearings has become more and more complex, the size has become larger, and the effective wall thickness has become thicker and thicker. If the design method of the previous quenching die is used again, it can no longer meet the heat treatment requirements of the carburized steel bearing ring; the original design of the carburized steel bearing quenching die for railway wagons does not have a horizontal oil hole, and the oil groove of the die is particularly narrow. The amount of oil passing through is small, and the quenching and cooling capacity cannot be guaranteed, resulting in unqualified hardness at the core of the carbur...

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Problems solved by technology

If the design method of the previous quenching die is used again, it can no longer meet the heat treatment requirements of the carburized steel bearing ring; the original design of the carburized steel bearing quenching die for railway wagons does not have a horizontal oil hole, and the oil groove of the die is particularly narrow. The amount of oil passing through is small, and the quenching and cooling capacity cannot be guaranteed, resulting in the unqualified hardness of the carburized steel bearing core, and the heat treatment quality and service life of railway freight car bearings cannot be guaranteed.

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