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Chemical Composition and Machine Function of 42CrMo / raw material of slewing ring

Views:14     Author:Site Editor     Publish Time: 2020-06-23      Origin:Site

Chemical Composition and Machine Function of 42CrMo

1)     The chemical composition of the material


No

The chemical composition   %

C

Si

Mn

Mo

Cr

Ni

S

P

Cu

42CrMo

0.38~0.45

0.17~0.37

0.50~0.80

0.15~0.25

0.90~1.2

≤0.30

≤0.035

≤0.035

≤0.30

(Note: The chemical composition of the other material must obey the standard set by the country, the allowed dispersion of the chemical composition must accord to the provision of GB222 )


2)     Microstructure

Steel No

Center osteoporosis

General osteoporosis

Segregation

Subcutaneous bubble

Intergranular crack

Level is not more than

No allow

42CrMo

2.0

2.0

2.0

(Note: Free rough loose center can not)

3)     Machine function:

Central roued piece of rough mechanical properties

Steel No

Delivery status

Wall thickness

Mm

Tensile strength

σ b MPa

Elongation

δ 5 %

Section shrinkage

ψ %

42CrMo

Quenched

≤70

785

12

40

Slewing Bearing  Parts:

l  Isolation Block:      Material  PA1010Resin

l  Seal Ring:          Material  NBR( nitrile rubber buna)

l  Steel Ball:          Material  GCr15

l  Lubrication grease:  No.2 EP grease (GB7324-1994)

 

 

 



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