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Common Gate Valve Coating Materiails
Valve Gate
PRODUCT PARAMETERS FOR GATE OF GATE VALVE COATING
This part can be illustrated by a table shown below:
name |
Description |
Chemical composition |
Max thickness |
Hardness |
Bond strength |
Porosity |
Limit temperature |
Costing characterlzation |
wt.% |
mm |
HV0.3 |
MPa |
% |
℃ |
|||
WC-CoCr |
WC86/Co10/Cr4 |
Co：9-11
|
1 |
1100-1500 |
>75 |
482 |
• Good abrasive resistance at low temperature • Compared with WC-Co, its oxidation resistance and corrosion resistance are improved. • The coating is compact and hard. |
|
WC-Co |
WC88/Co12 |
Co：11-13
|
2 |
1050-1200 |
>75 |
454 |
• Good abrasive resistance at low temperature • Limited oxidation resistance and corrosion resistance • The coating is compact and hard |
|
WC-Co |
WC83/Co17 |
Co：16-18
|
2 |
950-1100 |
>75 |
454 |
• Good abrasive resistance at low temperature • Compared with WC-12Co, its abrasive resistance is poor, but toughness, impact strength and ductility are better. • The coating is compact and hard. |
|
Cr3C2 -NiCr |
75Cr3C2 /25NiCr |
Ni: 16-21 C: 9-11 Cr: 11 B: 2.2 Si: 4 Fe: 2.7 C: 0.4 Ni: Bal |
1 |
750-900 |
>75 |
871 |
• Good abrasive and sliding abrasive performance of abrasive-resistant materials at high temperatures. • Good corrosion resistance. |
|
Cr3C2 -NiCr |
80Cr3C2 /20NiCr |
Ni：14-18
|
1 |
800-950 |
>75 |
871 |
• Good abrasive and sliding abrasive performance of abrasive-resistant materials at high temperatures. • Good corrosion resistance. |
|
CoCrW Alloy |
Stellite 6 |
Cr：29 W：4 Ni：3 Fe：3 C：1.15 Si：1.1 Co：Bal |
0.6 |
HRC38±5 |
>55 |
649 |
• Thermosetting and abrasive resistance are good. • Oxidation resistance and corrosion resistance are good. |
|
CoCrW Alloy |
Stellite 12 |
Cr：29.5 W：8.25 Ni：3 Fe：3 C：1.4 Si：1.45 Co：Bal |
0.6 |
HRC42±5 |
>55 |
649 |
• Thermosetting and abrasive resistance are good. Compared with 6#, its abrasive resistance is better. • Oxidation resistance and corrosion resistance are good. |
|
CoCrW Alloy |
Stellite 20 |
Cr：32.5 W：17.5 Ni：3 Fe：3 C：2.45 Si：1.0 Co：Bal |
0.6 |
HRC52±5 |
>55 |
649 |
• Thermosetting and abrasive resistance are good. Compared with 12#, its abrasive resistance is better • Oxidation resistance and corrosion resistance are good. |
|
Nickel Alloy |
Ni50 |
Cr：11 B：2.2 Si：4 Fe：2.7 C：0.4 Ni：Bal |
0.5 |
HRC50±5 |
>41（HVOF） |
550 |
• Stand wear and tear • Erosion and abrasion • Machinable |
|
Nickel Alloy |
Ni55 |
Cr：15.5 B：3.0 Si：4 Fe：14 Mo：3 C：0.75 Ni：Bal |
0.5 |
HRC55±5 |
>41（HVOF） |
550 |
• Stand wear and tear • Erosion and abrasion • Machinable |
|
Nickel Alloy |
Ni60 |
Cr：15 B：3.1 Si：4.3 Fe：4 C：0.65 Ni：Bal |
0.5 |
HRC60±5 |
>41（HVOF） |
550 |
• Stand wear and tear • Erosion and abrasion • Machinable |
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