A cooling method for converter heat treatment parts

Abstract

The invention relates to a cooling method for heat treatment parts of a converter. The equipment used includes a converter, a cooling oil tank, a smoke exhaust pipe and a circulating oil circuit. The cooling oil tank includes an oil tank, a bracket, a basket and a draft pipe. The processing steps include: a) parts Enter the converter for heat treatment. After the treatment is completed, the parts enter the feeding pipe from the outlet of the converter. b) The parts enter the feeding pipe. The flow rate of quenching oil is sent into the oil pipe, and the quenching oil completely submerges the parts and drives the parts to move to the basket; c) After the parts enter the basket continuously, the quenching oil flows out from the bottom and four walls of the basket and falls into the bottom of the oil tank, and then passes through the bottom of the oil tank The oil pipeline and the oil pump are sent back to the oil pipeline connected with the oil pipe end cover for recycling; the method adopted in the present invention can reduce the hardness dispersion of the parts after quenching and improve the quenching quality of the parts.

Description

Technical field [0001] The invention relates to a cooling method of heat-treated parts, in particular to a method for cooling heat-treated parts of a converter. Background technique [0002] At present, in the heat treatment process of chains, low-carbon alloy steel components such as small-size pins are more commonly used in converter carburization (or carbonitriding) followed by oil quenching. Conventional converters generally use an open oil tank, and the insulated parts are poured directly into the quenching oil in the oil tank while the oil tank is circulated or stirred. In this process, three problems are prone to occur: one is that a large amount of oily smoke is generated during quenching, which permeates the health of workers in the workplace; the other is that the open oil tank is used, and the quenching oil splashes and splashes when parts enter the oil tank. The discharged oil falls on the ground, causing a certain waste of quenching oil. At the same time, if the cl...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above-mentioned technical problems, the object of the present invention is to provide a cooling method for heat-treated parts of the converter, which can effectively prevent problems such as splashing of quenching oil, diffuse oil smoke in the workplace, and uneven hardness of workpieces after quenching.

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