Mechanical processing

Tungsten carbide (hard alloy), with its ultra-high hardness (HRA 85-93), wear resistance, impact resistance, good red hardness, and strong dimensional stability, has become a key material in the machining field, meeting the demands of "high-efficiency cutting, precision forming, and mass production." It is widely used in core processes such as cutting, stamping, and precision mold making. Specifically:

In cutting, tungsten carbide is a core tool for machining difficult-to-machine materials. For conventional materials such as carbon steel, alloy steel, and cast iron, as well as difficult-to-machine materials such as titanium alloys, high-temperature alloys, and stainless steel, tungsten carbide end mills, drills, turning tools, and boring tools have a cutting efficiency 3-5 times that of high-speed steel. It maintains high hardness even at 600℃, enabling continuous cutting for extended periods and reducing tool change frequency. When machining precision parts, tungsten carbide tools can control surface roughness Ra below 0.8μm and dimensional tolerance within ±0.01mm, meeting the assembly and sealing requirements of mechanical components.

In precision stamping and forming processes, tungsten carbide molds support mass production. In the cold stamping of mechanical structural components (such as gear blanks, connecting rod plates, and bearing cages), tungsten steel blanking dies, bending dies, and drawing dies are used. Their wear resistance is 10-20 times that of traditional die steels, and they can withstand hundreds of thousands to millions of stamping cycles, ensuring part consistency. In the forming of micro-mechanical parts (such as gears, valve cores, and precision fasteners), the high rigidity and low coefficient of thermal expansion of tungsten steel dies prevent die deformation during forming, ensuring the accuracy of the parts' precision structures.

Tungsten steel demonstrates unique advantages in special processing and die applications. Tungsten steel is used in the forming dies for powder metallurgy parts (such as mechanical seal rings and gears) for high-precision forming after powder compaction, reducing subsequent machining allowances. In precision forging dies for mechanical parts (such as crankshaft and camshaft forging dies), tungsten steel-based composite materials resist high-temperature creep, maintaining shape stability under high temperature and pressure (800-1000℃), thus improving forging precision. Furthermore, tungsten steel is widely used in forming tools such as broaches, reamers, and hobs in machining, suitable for high-precision machining of complex tooth and groove shapes.

Tungsten steel, by improving machining efficiency, ensuring part precision, and extending tool and die life, comprehensively supports efficient mass production and performance upgrades in general machinery, precision machinery, and heavy machinery, making it an indispensable core material in the machining industry.