Simultaneous induction quenching technology for flange-output shaft neck and end face

Abstract

The invention relates to a technique for induction-quenching the axle journal and the end surfaces of a flange-output axle simultaneously. The invention is characterized in that the technique comprises the following steps: placing parts to be quenched with end surfaces upward on a rotary base; pressing down a start button to start rotating a workpiece, so that the metal parts adjacent to active wires are heated for 5 seconds; stop heating when the parts are heated to a temperature 50 DEG C higher than the austenitizing temperature of the material; cooling by spraying cooling water; and then, finishing the quenching process of the part by taking the part down from the rotary base when the cooling is finished. The technique ensures that hardening layers can be distributed evenly, prevents the quenching crack from generating, improves the cooling capacity and uniformity during the cooling process in quenching and ensures that the hardness of the quenched surface is even; the invention has the advantages of simple structure, short process time, high production efficiency, energy conservation and low process cost; the hardening layers are continuously distributed from the axle journal to the end surfaces without tempering soft zone, and evenly distributed except for the tip part; and the technique provides convenience for part assembly and disassembly and technique adjustment, so that spraying and part disassembling can be finished at two positions.

Description

Technical field: [0001] The invention relates to a flange-output shaft journal and end face simultaneous induction hardening technology. Background technique: [0002] The flange-output shaft is an important part used to transmit power to the axle in the automobile gearbox. Due to the requirements of the working conditions and service conditions, an oil seal needs to be installed on the Φ95.3 journal, and there is a part with higher hardness on the end face. Fitting, the failure form is surface wear, and in order to improve the surface roughness of the journal, fine grinding is required, so it is required to have a high surface hardness on the Φ95.3 journal and end face, and induction hardening is required. [0003] The induction hardening process is carried out in two processes with the journal and the end face. The technical difficulty is not great, but there are disadvantages such as long process route, low production efficiency and high cost. In addition, in the area wh...

AI Technical Summary

Problems solved by technology

[0003] The induction hardening process is carried out in two processes with the journal and the end face. The technical difficulty is not great, but there are disadvantages such as long process route, low production efficiency and high cost.

In addition, in the area where the hardening zone borders during two quenchings, there will always be a soft zone due to the influence of the heat-affected zone. If it is not handled properly, it will affect the performance of the part

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