High Dimensional Stability Carbon Tungsten Valve Tip Connected Piston Rod with Up to 2500 MPa Tensile Strength and Long Lifespan

The Carbon Tungsten Valve Tip Connected Piston Rod is a high-performance industrial component featuring a dual-metal composite structure. It integrates an ultra-hard carbon tungsten (cemented carbide) valve tip with a high-toughness alloy steel piston rod through specialized joining processes. This product is specifically engineered for extreme operating conditions such as high temperature, high pressure, high flow velocity, and media containing solid particles. It effectively resolves issues like sealing failure and valve tip detachment caused by erosion and wear in traditional metal valve stems. It is widely used in valves, pumps, and hydraulic systems across the petroleum, chemical, power, and mining industries.

This product consists of three main components:

Valve Tip Section: Manufactured from virgin carbon tungsten powder via powder metallurgy, ensuring high density and absence of porosity or inclusions. The sealing spherical surface undergoes three processes: rough grinding, fine grinding, and lapping, guaranteeing perfect spherical contour accuracy for optimal mating with the valve seat.

Rod Body Section: Made of high-quality stainless steel or alloy steel, subjected to quenching and tempering treatment for excellent comprehensive mechanical properties. The surface can be chrome-plated or coated as needed to reduce the friction coefficient within the packing gland.

Connection Joint: Employs vacuum brazing technology, allowing the brazing filler metal to uniformly penetrate the microscopic gaps of the joint interface, forming a strong metallurgical bond. The weld area has a smooth transition with no stress concentration points, capable of withstanding impact loads from high-frequency reciprocating motion.