Wholesale Precision Tool Supplier & Factory

Cobalt serves as the ductile metallic binder surrounding tungsten carbide (WC) hard grains. Increasing cobalt (e.g., from 6% to 12%) raises Transverse Rupture Strength (TRS) and shock resistance, which helps absorb vibrations in interrupted or unstable cuts, but lowers overall abrasion resistance. Conversely, reducing cobalt while refining WC grain size to sub-micron or nano-scale (0.2–0.6 µm) increases hardness up to 93 HRA, delivering the edge retention needed for finishing hard mold steels and abrasive composites.

Our centerless CNC grinding lines supply carbide rods finished to ISO h6 and h5 diameter tolerances, down to -0.005 mm upon request. Standard total radial runout is kept within 0.002 mm across typical lengths, and surface roughness averages Ra ≤ 0.1 µm. For high-speed rotary tooling, this reduces vibration and balance issues, promoting even flute wear and extended spindle life.

Conventional vacuum sintering can leave micro-pores that act as stress risers under heavy cyclic loads. Our Low-Pressure Sinter-HIP process injects up to 100 bar of high-purity argon at sintering temperature. This isostatic pressure closes internal micro-voids, lifting density to 99.98% of theoretical maximum and boosting Transverse Rupture Strength by roughly 15% to 25%, which helps protect against sudden edge chipping.

Yes. We regularly produce custom step tools, profile cutters, and wear parts to customer-supplied CAD drawings or physical reference samples. Our engineering team reviews step transitions, flute relief angles, and internal coolant paths before providing a DFM assessment, offering sample batches to confirm performance prior to mass production.

For hardened die and mold steels (HRC 50–65), we recommend our silicon-doped nanocomposite coating (TiSiN) or multi-layer AlTiN. TiSiN handles operating temperatures up to 1,100°C by forming a dense silicon oxide and aluminum oxide boundary layer. This thermal barrier prevents heat from penetrating into the carbide substrate, preserving edge hardness during aggressive semi-finishing and finishing.

For standard ground rods, coolant-hole blanks, and common catalog end mills, our MOQ is just 1 piece to accommodate validation testing. Custom OEM/ODM profiles typically require an initial trial run of 5 to 10 pieces. Stock products ship within 24 to 48 hours, while custom sintered or ground production runs generally complete and dispatch in 7 to 25 days depending on complexity and finishing treatments.