Specialized Cladding for Valve Sealing Surfaces
Our Valve Seat PTA Hardfacing Machine is optimized specifically for valve sealing surface cladding. It operates with a welding current range of 15 to 240 amperes and a powder feed rate of 0.8 to 4.8 kilograms per hour. Valve sealing faces must resist erosion and corrosion under high temperature and high pressure. We have therefore strengthened the closed-loop oscillation control on this machine to ensure consistent bead width and thickness across every weld pass. The cladding layer achieves a hardness of 40 to 48 HRC. Our company has focused on plasma transferred arc technology for 11 years, and we have numerous successful cases in the valve industry. Our clients include many well-known valve manufacturers across China.

Small Diameter Capability and Stable Dilution Control
A core strength of this equipment is its ability to handle internal diameter cladding. It can clad the smallest inner diameter of just 45 millimeters. This capability is among the best in its class. The fixture system supports workpieces up to 700 kilograms, which is sufficient for common gate valves, ball valves, and globe valve bodies. The dilution rate is maintained between 5% and 10%. This is a critical factor for achieving both high hardness and excellent corrosion resistance on sealing surfaces. Every unit undergoes full-load testing under simulated working conditions before leaving our factory. We also support custom fixture design based on your valve specifications, so the equipment fits your existing products immediately upon arrival. Our Valve Seat PTA Hardfacing Machine delivers precision you can count on.
Dedicated Process Database and Extended Warranty
We provide a dedicated process database for our valve industry customers. Our engineers pre-set several recommended cladding parameters based on the valve materials you commonly use, such as 316L stainless steel, duplex stainless steel, and Inconel alloys. This shortens your on-site commissioning time and gets your machine into production faster. The entire unit is covered by a one-year warranty. Core components like the welding torch are warrantied for two years. We want you to use this Valve Seat PTA Hardfacing Machine with complete peace of mind.
Technical Specifications
|
Parameter |
Value |
|
Hardfacing Current Range |
15-240A |
|
Powder Feed Rate |
0.8-4.8 kg/h |
|
Cladding Layer Hardness |
40-48 HRC |
|
Minimum Cladding Inner Diameter |
Φ45 mm |
|
Torch Type |
Closed-Loop Oscillation Control |
|
Max Fixture Load Capacity |
700 kg |
|
Dilution Rate |
5-10% |
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