Wear resistance of different composition steels after induction hardening

鋼番	Chemical composition (mass fraction, %)			Average hardness HRC	Wear concave volume /10 3 mm 3
鋼番	C	Mn	Cr	Average hardness HRC	Wear concave volume /10 3 mm 3
45	0.50	0.58	0。 18	62	371
50Mn	0.53	0。 70	0。 10	63	357
45 Cr	0.42	0.55	1。 10	60	329
T7	0.72	0.22	0。 15	65	310

According to the data on the wear and wear resistance of induction hardened parts, the following conclusions can be drawn:

1 ) Induction heating is used to quench the surface of the workpiece, which greatly improves the wear resistance of the original unquenched workpiece.

2 ) Compared with ordinary integral hardened parts, induction hardened parts have improved wear resistance due to high surface hardness and non-decarburization.

3 ) The wear resistance of induction hardened parts made of medium carbon steel is lower than that of carburized hardened parts due to the low surface hardness and carbon content.