Double-liquid quenching process and quenching device

Abstract

The invention relates to a double-liquid quenching process and a quenching device, and relates to the technical field of quenching. The double-liquid quenching process comprises the steps of workpiece taking, water quenching, oil quenching, transferring and the like. The quenching device comprises a base, and a water quenching mechanism, an oil quenching mechanism and a clamping mechanism used for clamping a workpiece are arranged on the base; the water quenching mechanism comprises a water quenching box, and the water quenching box is filled with cooling water; a detection mechanism is arranged in the water quenching box and comprises a thermoelectric couple, and the thermoelectric couple is arranged at the bottom of the water quenching box; and the oil quenching mechanism comprises an oil quenching box, and the oil quenching tank is filled with cooling oil. According to the double-liquid quenching process and the quenching device provided by the invention, the temperature of a workpiece can be more accurately detected, the temperature of the workpiece is closer to a martensite transformation area when water quenching is stopped, and the first quenching effect is improved.

Description

technical field [0001] The present application relates to the field of quenching, in particular to a two-liquid quenching process and a quenching device. Background technique [0002] The two-liquid quenching method is to take the quenched workpiece out of the quenching temperature, and first quench it in a fast coolant to make the austenite rapidly supercooled to close to the martensite transformation region, and then quench it in a slow coolant. In general, water is used as the fast coolant and oil is used as the slow coolant. When performing double liquid quenching, the parts are usually cooled to 300°C in water first, and then the parts are quenched in oil. After the double-liquid quenching process, the carbides in the steel are fine and evenly distributed, and the banded carbides that are difficult to eliminate by conventional processes are basically eliminated. [0003] At present, the announcement date is March 2, 2021, and the Chinese invention patent with the annou...

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Problems solved by technology

[0005] Regarding the above-mentioned related technologies, the inventor believes that since the boiling temperature of water at 1 standard atmospheric pressure is 100°C, and the workpiece needs to be cooled to 300°C in water, using a temperature sensor to detect the temperature of the water to indirectly determine the temperature of the workpiece will cause Larger error, which reduces the effect of the first quenching

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