Valve Gate: The core parts of flat gate valves used in the petrochemical industry require high pressure, wear resistance, corrosion prevention against H2S and CO2, especially wellhead and Christmas tree valves have higher requirements.
PRODUCT PARAMETERS FOR Tungsten Carbide Valve Gate
Valve Gate: The core parts of flat gate valves used in the petrochemical industry require high pressure, wear resistance, corrosion prevention against H2S and CO2, especially wellhead and Christmas tree valves have higher requirements. Our company selects Thermal Spraying Technology with using high-quality thermal spraying powder as raw material, adopts supersonic spraying equipment, optimizes thermal spraying process, and supports advanced processing equipment and technology, so that the denseness of coating can meet the gas sealing requirements under up to 140 MPa, the coating porosity
Valve Gate: The core parts of flat gate valves used in the petrochemical industry require high pressure, wear resistance, corrosion prevention against H2S and CO2, especially wellhead and Christmas tree valves have higher requirements.
PRODUCT PARAMETERS
Valve Gate: The core parts of flat gate valves used in the petrochemical industry require high pressure, wear resistance, corrosion prevention against H2S and CO2, especially wellhead and Christmas tree valves have higher requirements. Our company selects thermal spraying technology which using high-quality thermal spraying powder as raw material, adopts supersonic spraying equipment, optimizes thermal spraying process, and supports advanced processing equipment and technology, so that the denseness of coating can meet the gas sealing requirements under up to 140 MPa, the coating porosity
Valve Seat: The detachable surface parts in valve are used to support the valve spool in the fully closed position and constitute a sealed part. Generally, valve seat diameter is the maximum flow diameter of the valve.Â
PRODUCT PARAMETERS FOR Stainless Steel Valve Seats
Valve Seat: The detachable surface parts in valve are used to support the valve spool in the fully closed position and constitute a sealed part. Generally, valve seat diameter is the maximum flow diameter of the valve. Elastic sealing material and small actuator's thrust force is used to obtain tight seal of air bubble, compression valve seat's sealing stress elastically deforms the material and squeezes it into the rough surface of the matching metal part to block all leakage paths. The permeability of material is a basis for small amount of leakage for fluid. The seal must be carefully fixed to prevent cracking and air leakage due to differential pressure. Bonding soft valve seat to metal part is one way, but it cannot completely solve the problem because the bond breaks and fails when exposed to thermal shock. A sufficiently large pressure drop will destroy the bonding material. Thermal spraying technology ultrasonic spraying equipment is used to optimize thermal spraying process so that the denseness of coating can meet the gas sealing requirements under up to 140MPa, the porosity of coating
Valve Seat: The detachable surface parts in valve are used to support the valve spool in the fully closed position and constitute a sealed part. Generally, valve seat diameter is the maximum flow diameter of the valve.
PRODUCT PARAMETERS FOR OUR high performance valve seat
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 % â??
WC-CoCr WC86/Co10/Cr4 Coï¼?9-11
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 % â??
WC-CoCr WC86/Co10/Cr4 Coï¼?9-11
High Performance Valve Seat
Globe And Supporting Valve Seat: The core parts of globe valves used in the petrochemical industry require high pressure, wear resistance and corrosion protection.Â
PRODUCT PARAMETERS
Globe And Supporting Valve Seat: The core parts of globe valves used in the petrochemical industry require high pressure, wear resistance and corrosion protection. Our company uses the same process as Valve Gate spraying above, so that the coating performance can be the same as the Valve Gate.
Stainless steel Valve Seats
Valve Seat: The detachable surface parts in valve are used to support the valve spool in the fully closed position and constitute a sealed part. Generally, valve seat diameter is the maximum flow diameter of the valve.
PRODUCT PARAMETERS
Tungsten carbide is one of the most important raw materials for cemented carbide. It's a black hexagonal crystal with metallic luster, chemical stability, hardness and diamond similarity, and it's also a good conductor of electricity and heat. In tungsten carbide, carbon atoms are intercalated into the gap of the tungsten metal lattice without destroying the crystal lattice of the original metal, thereby forming a gap solid solution, and thus the tungsten carbide is also called an interstitial compound (or an intercalation compound). Tungsten carbide is suitable for machining at high temperatures-- it can make cutting tools, structural materials for kiln, jet engines, gas turbines, nozzles, etc.
The hardness of cobalt-based carbonized tungsten alloy powder or nickel-based carbonized tungsten alloy powder and chromium-based carbonized tungsten alloy powder sprayed by HVOF tungsten carbide coating can reach 850 degrees of high temperature of HV1200. Therefore, the valve parts are resistant to abrasive, corrosion, high temperature and oxidation. The process exceeds the processes of manual surfacing, chrome plating, carburizing, quenching and tempering, etc., so that the production efficiency can be increased by more than 2 times, the production cost can be reduced by more than 50%, and the service life can be extended by several tens of times.
Valve Gate: The core parts of flat gate valves used in the petrochemical industry require high pressure, wear resistance, corrosion prevention against H2S and CO2, especially wellhead and Christmas tree valves have higher requirements.
Tungsten carbide is one of the most important raw materials for cemented carbide. It's a black hexagonal crystal with metallic luster, chemical stability, hardness and diamond similarity, and it's also a good conductor of electricity and heat. In tungsten carbide, carbon atoms are intercalated into the gap of the tungsten metal lattice without destroying the crystal lattice of the original metal, thereby forming a gap solid solution, and thus the tungsten carbide is also called an interstitial compound (or an intercalation compound). Tungsten carbide is suitable for machining at high temperatures-- it can make cutting tools, structural materials for kiln, jet engines, gas turbines, nozzles, etc.
The hardness of cobalt-based carbonized tungsten alloy powder or nickel-based carbonized tungsten alloy powder and chromium-based carbonized tungsten alloy powder sprayed by HVOF tungsten carbide coating can reach 850 degrees of high temperature of HV1200. Therefore, the valve parts are resistant to abrasive, corrosion, high temperature and oxidation. The process exceeds the processes of manual surfacing, chrome plating, carburizing, quenching and tempering, etc., so that the production efficiency can be increased by more than 2 times, the production cost can be reduced by more than 50%, and the service life can be extended by several tens of times.
Valve Seat: The detachable surface parts in valve are used to support the valve spool in the fully closed position and constitute a sealed part. Generally, valve seat diameter is the maximum flow diameter of the valve.
PRODUCT PARAMETERS
Valve Seat: The detachable surface parts in valve are used to support the valve spool in the fully closed position and constitute a sealed part. Generally, valve seat diameter is the maximum flow diameter of the valve. Elastic sealing material and small actuator's thrust force is used to obtain tight seal of air bubble, compression valve seat's sealing stress elastically deforms the material and squeezes it into the rough surface of the matching metal part to block all leakage paths. The permeability of material is a basis for small amount of leakage for fluid. The seal must be carefully fixed to prevent cracking and air leakage due to differential pressure. Bonding soft valve seat to metal part is one way, but it cannot completely solve the problem because the bond breaks and fails when exposed to thermal shock. A sufficiently large pressure drop will destroy the bonding material. Ultrasonic spraying equipment is used to optimize thermal spraying technology process so that the denseness of coating can meet the gas sealing requirements under up to 140MPa, the porosity of coating
