AISI 4140 42Crmo4 SCM440 Related 归档 - Page 11 of 35

Production Process Of 42CrMo4 Chrome Plated Bar

42crmo4 chrome plated bar with a very important application as hydraulic cylinder piston rod.42CrMo4 chrome-plated bar is manufactured from low-alloy chromium-molybdenum steel and supported by an induction hardened case offering greater strength and resistance to mechanical damage from external impact. It is used in applications requiring greater yield strength in combination with greater surface impact resistance.other applications like Machine tools,Precision machining machines,Heavy cutting machines,Punching machines,Marble cutting machines,Automatic equipments,Grinding machines.

Chemical requirements

Grade	C	Si	Mn	P	S	Cr	Mo	Cu
4140	0.38~0.43	0.15~0.35	0.75~1.00	≤0.035	≤0.040	0.80~1.10	0.15~0.25	/
SCM440	0.38~0.43	0.15~0.35	0.60~0.85	≤0.030	≤0.030	0.90~1.20	0.90~1.20	≤0.30
42CrMo4	0.38~0.45	≤0.40	0.60~0.90	≤0.035	≤0.035	0.90~1.20	0.15~0.30	/
42CrMo	0.38~0.45	0.17~0.37	0.50~0.80	≤0.030	≤0.030	0.90~1.20	0.15~0.25	/

Production Process

Raw materials →heat treatment(normalizing+tempering) →Peeled/cold drawn/turned → Straightening →Cutting→ inspection → rough grinding 3 times → Straightening →Inspection →Precision grinding 2 times →Inspection →Polishing →Inspection → Chromeplating →Inspection →Polishing →Inspection →Packaged

hard chrome rod