tungsten carbide ball: good quality, used in all machines; special solution for you, raw material as DIN C/O available

Tungsten carbide valve ball and seat

 

Specification:

 

1.High strength, high wear resistance, high precision, high temperature resistant, corrosion resistant.

2.They are mainly used for the sealing of valves of oil pumps in petroleum industry's sand containing wells, viscous oil wells, sea oil wells and high pressure sulfur resistant oil wells, etc.                       

3. They are used with compatible cemented carbide valve seats.

4.The surface finish, tolerance class and tolerances of dimensions have respectively reached the standards of the machine industry: G5, G10, G16, G40 and G100 of JB/T 9145-1999. 5.Precision machined cemented carbide balls of other grades and specifications are also available based on customers' demands. 6.Compatible high precision valve seats can also be made available.

Grade	Equal to ISO Category Number	Performance
		Density	Bend Strength	Hardness
		G/Cm3	N/mm2	HRA
YG3	K01	14.9-15.3	1180	≥90.5
YG3X	K01	15.1-15.4	≥1300	≥91.5
YG6X	K10	14.8-15.1	≥1560	≥91.0
YG6A	K10	14.7-15.1	≥1580	≥91.0
YG6	K20	14.7-15.1	≥1670	≥89.5
YG8	K20-K30	14.6-14.9	≥1840	≥89

The specification of Cemented Carbide ball

Type	Blank Size
	ΦDo	B
Φ3~Φ200 Ball	Φ3~Φ200	0~5

The unground or ground products can be manufactured and supplied as per the drawings or samples.

Grade of the finish ground balls

Grade	Size	Spherical deviation	Lot Diameter Variation	Allowable variation	Nominal Tolerance	Machining allowance	Maximum Roughness “Ra”
3	0.006-1/2	0.000003	±0.00000	±0.00003	-	0.000010	0.5
5	0.006-1/2	0.000005	±0.00000	±0.00005	-	0.000010	0.8
10	0.006-7/8	0.000010	±0.000010	±0.00005	-	0.000010	1.0
25	0.006-1	0.000025	±0.000025	±0.00010	-	0.000010	2.0
50	0.006-1	0.000050	±0.000050	-	±0.0002	0.000050	3.0
100	0.006-1	0.000100	±0.000100	-	±0.0005	-	5.0
200	0.006-1	0.000200	±0.000200	-	±0.0010	-	8.0
1000	0.006-1	0.001000	±0.001000	-	±0.0050	-	-