The spindle of the C2150 horizontal six-axis automatic lathe uses a high-frequency induction heating power supply for heat treatment, and the effect is very good.

The main spindle of the C2150 horizontal six-axis automatic lathe is made of 45 steel (seamless steel pipe). The heat treatment technical requirements are: quenching and tempering hardness is 220-250HBW, and surface quenching hardness is 48-53HRC.

(2)Heat treatment process

1) Conditioning. The quenching and tempering process is carried out using high-frequency induction heating power. The quenching heating temperature is 830-850℃, water quenching; the high temperature tempering temperature is 600℃. The hardness is 220-250HBW, and the radial circular runout is ≤1.Omm.

2) High frequency induction hardening. Use a 60kw high-frequency induction heating power supply to perform quenching heat treatment on the rough and finished spindle. The process parameters are: the gap between the inductor and the shaft surface is 2mm, the spindle rotation speed is 3mm/s, the heating temperature is 900-920℃, quenching The medium is tap water.

After high-frequency induction quenching, the surface hardness is 52-58HRC, the depth of the hardened layer is 1.0-1.5mm, and the radial circular runout is ≤0.40mm.

3) Tempering. The heating temperature is 220-240℃, and the holding time is 2h.

The heat treatment process is a key factor affecting the quality of the workpiece's heat treatment. Therefore, it is very important to master the heat treatment process of the workpiece. This article briefly introduces the induction quenching and tempering, quenching, and tempering processes of the C2150 horizontal six-axis automatic lathe spindle. I hope it will be helpful to your work. If you don’t understand anything about the above, you can read more books on heat treatment.