Power-on diffusion welding products-CNC tools

Core advantages of CNC tools

1. Solve the problem of connecting heterogeneous materials

• Thermal stress buffering ：Relieve cemented carbide by gradient intermediate layers (such as nickel foil) α≈5×10⁻⁶/℃）With steel ( α≈12×10⁻⁶/℃）The difference in thermal expansion, the residual stress is reduced by 30%-50% 6；

• Suppress interface response ：Low temperature rapid welding ( ≤800℃）Reduce cemented carbide  WC  Chemical reaction with steel matrix to avoid generation Fe₃W₃C  Is brittle phase 11。

2. Improve tool comprehensive performance

• Extended lifespan ：Compared with brazing tools, the wear-resistant life of the energized diffusion welding tools is increased by 50%-100%. For example, the life of cemented carbide milling cutters is extended from 3.6 minutes to 7.7 minutes when processing titanium alloys. 9；

• Processing accuracy ：Deformation ＜0.01mm， Suitable for high-precision internal cooling drill bits (such as patents CN202111036444  Diameter tolerance of cold channel in the middle ≤±0.005mm）10；

• reliability ：No welding scars, no pores, joint strength fluctuations ＜5%，Suitable for strict requirements for tool consistency in the aerospace field 8。

3. Cost optimization

• Material Utilization ：Avoid waste of solder during brazing and reduce the amount of cemented carbide by 20%-30%;

• Process simplification ：No need for subsequent grinding and welding scars, the processing process is reduced by 30%. For example, after a certain enterprise adopts this technology, the tool production cycle is shortened from 4 hours to 2.5 hours. 15。