Due to the unique advantages of powder metallurgy (porous structure), it is widely used in transportation, machinery, electronics, aviation and other fields, especially in the field of automobile manufacturing. At the same time, the difficulty of powder metallurgy processing lies in the porous structure. Due to the existence of porous pores, the hardness value also fluctuates in a small area. Even if the measured macroscopic hardness is HRC20-35, the hardness of the particles of the component parts will be as high as HRC60, and these hard particles will cause micro-fatigue and sharp wear of the cutting edge of the tools.
In view of the above processing difficulties, Halnn Tools has professional and efficient processing of CBN tools. The specific tool solutions are as follows:
1. Valve seat
Process: finishing process; commonly used models: DCGW11T304, etc.; Halnn Tools CBN tool models realize high-speed cutting and obtain higher finish.
2. Pulley
Process: Finishing process; Halnn Tools recommends composite CBN tools; compared with imported tools, it is cost-effective and has stable cutting performance.
The case is as follows:
Particle hardness: HRC62
Processing material: sintered powder metallurgy
Tool model: BN-K10 CCGW09T304
Cutting parameters: Vc=150m/min
Fr=0.15mm/r
ap=0.35mm
Processing method: dry cutting
The comparison effect is as follows:
|
Materials |
Vc |
Ap |
Number of passes |
|
Halnn BN-K10 |
150m/min |
0.35mm |
1 |
|
Other CBN inserts |
150m/min |
0.2mm |
2 |
3. Hip joint support cover
Process: Finishing process; Halnn Tools recommends composite CBN tools, which not only improve production efficiency, but also reduce costs compared to imported tools.
The case is as follows:
Workpiece hardness: HRC35
Processing material: cobalt-chromium alloy
Tool model: BN-K10 DCGW11T304
Cutting parameters: Vc=210m/min
Fr=0.10mm/r
ap=0.15mm
Processing method: dry cutting
The comparison effect is as follows:
|
Materials |
Vc |
Tools life |
Flank wear |
|
Halnn BN-K10 |
210m/min |
230 pcs/edge |
0.4mm |
|
Other CBN inserts |
180m/min |
200 pcs/edge |
0.5mm |