Insulture heating equipment induction quenching method:
1.At the same time heating quenching
The entire hardening zone is heated at the same time, and the cooling is carried out simultaneously after the heating is stopped, and the relative position of the part and the inductor during heating is unchanged. At the same time, the heating method can be divided into parts to rotate or not rotate in the application, and the cooling method can be divided into two kinds of in the inducer spray. From the angle of increasing generator utilization factor (except for a generator supplied to multiple quenching machines), while heating the rear part falls into the water sprower, productivity and generator coefficient are higher than that of the sensor spray.
2. Scan quenching
It is often referred to as continuous quenching. This method is only simultaneously heating part of the quenching region, and the heating zone is gradually moved to the cooling position through the relative movement between the inductor and the heating part. Scanning can also be divided into parts that are not turned (such as machine tool rail quenchings) and rotation (such as cylindrical long sleeves). In addition, there is also a scanned circulation, such as the outer silhouette quenching of the large cam; scanning plane quenching, such as the surface of the flat borboard, is also a scanning quench. Scanning quenching is suitable for the case where the high surface area is heated and the power supply is insufficient. A large number of production experience shows that the heating method is high than the scanning quenching method in the same case of the power supply, and the quenching equipment is reduced accordingly. For a ladder shaft-type part, when the quench is scanned, from the large diameter to the small diameter step due to the inductor electromagnetic field, there is often a transition zone having insufficient heating, so that the hardening zone is discontinuous in the shaft. Nowadays, the longitudinal current has been generally used in the simultaneous heating method, so that the step axis is continuous in full length, so that the torsional strength of the shaft is improved.