Previously To make Bolt, Nut, Screw and fasteners were applied with hot forging and machining but Currently aim to improve machining process by automating, high speed productivity and increase precision that is applied to cold forging and normal forging at industry area. So C.H.Q wire could be forged at room temp’condition and is ensured that it obtain good work ability and good surface. The Strict quality condition is required as micro structure, defect, dimension and surface condition.

 

 

C.H.Q Wire Application

 

TYPE	STEEL GRADE	APPLICATION ITEMS
CARBON STEEL	SWCH-A, SWCH-K(F)	BOLT, NUT, SCREW
BORON STEEL	SAE10B21, SAE51B20, POSA1021B, POSA5120BH	SAFETY BELT SHAFT, AUTOMOTIVE BOLT, CONSTRUCTION BOLT
Cr-Mo STEEL	SCM415(H), SCM420(H), SCM435(H), SCM440H	A BOLT , RETAINER, PISTON PIN RELATED
BEARING STEEL	SUJ2, SAE52100	AUTOMOTIVE BEARING (WHEEL,NIDDLE) INDUSTRIAL BEARING

 

 

Engine / Transmission

 

 

Steering mechanism

 

 

TOLERANCE ON DIAMETER AND OVALITY

 

DIAMETER (mm)	TOLERANCE (mm)	OVALITY (mm)
3 under	+ 0 / -0.025	0.013 Max
3-6 under	+ 0 / -0.030	0.015 Max
6-10 under	+ 0 / -0.036	0.018 Max
10-18 under	+ 0 / -0.043	0.022 Max
Over 18	+ 0 / -0.052	0.026 Max

 

 

PACKAGING DIMENSION ON DIAMETER

 

WIRE ROD DIAMETER (mm)	INNER DIAMETER (mm)	OUTER DIAMETER (mm)
22.01 ~ 40.0mm	1,000 ~ 1,200	1,650 ~ 1,700
14.0 ~ 22.0mm	1,000 ~ 1,100	1,550 ~ 1,700
6.5 ~ 13.99mm	900 ~ 1,000	1,350 ~ 1,600
5.01 ~ 6.49mm	820 ~ 900	1,200 ~ 1,600
2.0 ~ 5.0mm	500 ~ 550	920 ~ 950