Automobile Parts Using ST37.4 ST52 Honed Tubing Cylinder

TORICH Automobile Parts Using ST37.4 ST52 Honed Tubing Cylinder

Manufacture Method:
Cold drawn, hot rolled+deep hole bored

Delivery Condition:
1.+C /BK
No heat treatment after final cold drawing process.

2.+LC/BKW
After the final heat treatment there's a suitable drawing pass.

3.+SA/BKS
After the final cold drawing process there's a stress relief heat treatment in controlled atmosphere.

4.+A/GBK
After the cold drawing process the tubes are annealed in a controlled atmosphere.

5.+N/NBK
After the final cold drawing operation the tubes are normalized in a controlled atmosphere.

Material:
Carbon steel,alloy steel, stainless steel

Standard&Grade:
DIN2391-2 ST52,EN10305-1 E355,C45E,25CrMo4,42CrMo4, CK45,E410, E470,ASTM A519 SAE1020,
SAE1026,SAE1045,SAE1518,SAE1541, SAE4130,SAE4140,SAE4145,SAE4340,etc.

Size Range:
ID of 300mm max for cold drawing,
ID of 500mm for deep hole boring

ID Tolerance: ISO H8

End finish:
Plain ends with square cuts,free of burrs

Bore Roughness:
Ra0.30um max for honed tubes, Ra0.25um Max for Skived&roller burnished tubes

End finish:
Plain ends with square cuts,free of burrs

Usage:
Hydraulic cylinder, Pneumatic Cylinder

Product Feature:
1.High precision (can cut the costs of machining) .
2.Excellent surface finish
3.Good mechanical performance (Aneal ,Bright Anealing,QT heatment on steel tubes to reach customers' Mechanical requsts. )

The Advantage of Honed Cylinder Tube:
1 To improve surface roughness, roughness can almost reach Ra. M or so.
2 To correct the roundness, the ellipticity is less than 0.01 mm.
3 To improve the surface hardness, eliminate the stress deformation, hardness HV 4 ° or higher
After processing, the residual stress layer should improve the fatigue strength by 30%.
5, improve the quality of the match, reduce wear and tear, prolong the service life of the parts,

but the processing cost of the parts decreases.