Molding of cobalt chromium molybdenum superalloy bar

Update:31 May 2019

As the age of human aging is gradually increasing, the […]

As the age of human aging is gradually increasing, the market for osteoarticular prostheses is growing at a rate of 20%. Artificial joint products have become the most promising new technologies and industries in the early 21st century. Cobalt-chromium-molybdenum superalloys have excellent mechanical properties, corrosion resistance and biocompatibility.

And are important materials for orthopedic metal implants. It can be used in the field of human bone and joint prosthesis such as hip joint and knee joint, and it is irreplaceable. However, the cobalt-chromium-molybdenum superalloy is an intermetallic compound material, and has a high chromium content, is brittle and hard, has poor plasticity, and is difficult to process materials, so that the bar yield of the cobalt-chromium-molybdenum superalloy is limited.

In order to obtain cobalt chromium molybdenum superalloy rods, generally obtained by casting or small deformation method, the cobalt chromium molybdenum superalloy obtained by these methods has coarse, uniform and poor mechanical properties, and cannot be guaranteed in use. Excellent mechanical properties and corrosion resistance have great medical risks for users.

The object of the present invention is to solve the problem that the cobalt chrome molybdenum superalloy ingot is easily cracked and cast in the conventional free forging, and the bar crystal grains are coarse and uneven, and the mechanical properties are poor, and a cobalt chromium having a simple preparation method is provided. A method of forming a molybdenum superalloy bar.

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