Poured-in type quenching technology and quenching equipment

Abstract

The invention belongs to the field of plate spring preparation, and in particular relates to an influx type quenching process, that is, the plate spring is placed in an empty quenching tank, and the plate spring is hot-pressed with a quenching fixture, and then the quenching medium is rapidly injected from the upper part. pouring into the quenching tank, on the one hand, by using a large amount of low-temperature, continuously pouring, and fast-flowing quenching medium, the metallographic structure of the obtained leaf reed after quenching is made uniform, and the grains are made finer, so that the structure is formed from The transformation from austenite to martensite is faster and more complete, which prolongs the fatigue life of the leaf spring. On the other hand, it improves the quenching speed and production efficiency, and shortens the product production cycle. The present invention also provides a quenching equipment used in the quenching process, which has a compact structure, saves space, replaces manual operation, and realizes mechanized production, which not only saves manpower, avoids potential safety hazards, but also ensures quenching efficiency , so as to meet the needs of industrial production.

Description

Technical field [0001] The invention relates to an inrush quenching process and quenching equipment, and belongs to the field of leaf spring preparation. Background technique [0002] Traditional automobile leaf springs are composed of several pieces of spring steel. In the production process of automobile leaf springs, the processing technology of the leaf springs is very important. Existing leaf spring sheet quenching production lines are mostly row-type production lines, multiple quenching machines are arranged in a straight line, and the quenching medium tank is located at the bottom of the quenching machine. After the leaf spring comes out of the quenching furnace, it is conveyed to the front end of each quenching machine through the conveying mechanism. The worker completes the manual feeding work, starts the clamping mechanism of the quenching machine, clamps the leaf spring and quickly puts it into the quenching medium. The cooling process of the workpiece quenching is c...

AI Technical Summary

Problems solved by technology

[0005] ① Since the quenching machines are arranged in a straight line, the production site occupies a large area;

[0006] ②Workers need to run back and forth, and the number of quenching machines that each worker can take care of is limited;

[0007] ③Because the existing quenching machine is an open equipment, a large amount of harmful gas is generated when the high-temperature workpiece enters the oil, and it is difficult to eliminate the problem of environmental pollution;

[0008] ④ Some leaf springs are heavy in weight (20-30 kg). Since the feeding process is mainly through manual operation, the labor intensity is high, the productivity is low, and it is not conducive to automation transformation

[0009] ⑤ Due to the different residence time of hot workpieces in the air, the product quality is unstable

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