Core of the case: Cobalt-chromium-molybdenum alloy tibial platform processing
Processing parameters
Material: Cobalt-chromium-molybdenum alloy (HRC52)
Process: Milling molding
Size: 79×51×32.5mm
As the core load-bearing component of the artificial joint, the workpiece must simultaneously meet the three major clinical requirements of biocompatibility, wear resistance, and fatigue fracture resistance. The grinding and polishing process after the surface hardening treatment has put many manufacturers into an efficiency dilemma.
Industry pain points and processing dilemmas
In the field of orthopedic implants, cobalt-chromium-molybdenum alloy has become the mainstream material due to its high hardness (HRC52) and strong wear resistance, but this also brings processing difficulties:
Tool loss is out of control: Traditional milling requires tool replacement for every 5 pieces
Surface quality defects: Processing lines cause the post-polishing time to account for more than 60%
Comprehensive cost surge: In the 3.5-hour processing cycle of a single piece, the manual polishing cost accounts for 38%
A leading medical device company once tested American and Japanese equipment, and the surface roughness of the workpiece was always stuck at Ra0.8μm, unable to break through the micron-level precision requirements of orthopedic implants.
MID Solution: Ultrasonic technology reconstructs processing logic
For the processing characteristics of cobalt-chromium-molybdenum alloy, the MID technical team implemented triple technological breakthroughs:
① Ultrasonic vibration cutting system
20kHz high-frequency mechanical vibration reduces cutting force by 40%, fundamentally suppressing abnormal tool wear caused by the hardened layer of the material
② Intelligent micro-lubrication system
0.05ml/minute plant-based lubricant is precisely sprayed to form a molecular-level protective film on the surface of the superhard material
③ Internal cooling ring spray tool design
The patented tool integrates 8-way cooling channels, and the temperature of the cutting area is stably controlled at 80℃±5℃, extending the tool life by 3 times
Performance improvement data comparison (traditional solution vs MID)
About MID
MID Precision is a benchmark enterprise in the field of metal precision parts manufacturing. It has a modern production base of 7,500 square meters and focuses on providing integrated solutions for complex structural parts for the aerospace, high-end medical equipment and intelligent robotics industries.
Relying on the full-link service capability of precision machining, the company covers the entire process from material research and development, multi-axis linkage machining to surface treatment. Especially in the machining of superhard materials such as cobalt-chromium-molybdenum alloy and titanium alloy, its ultrasonic composite machining technology has passed AS9100 aerospace certification and ISO13485 medical device quality management system certification.
In typical applications such as orthopedic joint prostheses and aerospace engine blades, MID integrates the traditional complex processes that require collaboration among multiple manufacturers into a standardized delivery process with the help of a non-standard customized database and an intelligent process chain system, helping customers shorten the R&D verification cycle by more than 50%.
