Aerospace bearings, especially the engine spindle bearings, high speed, load, poor working conditions, the actual life is not high. Scrapped bearing on the findings showed that the main reason for bearing failure is corrosion, abrasion and other mechanical damage, including corrosion failure (pitting) the largest proportion (about 60%), wear scrap rate of only 10%.

According to bearing failure modes, in two common bearing material (GCr15 and M50 steel) on two different process routes (direct injection and ion beam mixing), after thousands of material specimens were studied and different injection elements their combined effects on the material wear and corrosion properties of (N, Cr, Ti, Ta, Cr + Mo, Ta + Cr, Cr + Mo + N, Cr + Mo + B, etc.).

Next to the turbojet engine bearings, automotive lubricants bearing after injection process, the injection portion of the inner and outer track and rolling element bearings (including ball and roller bars). For rolling the support of the body parts and other sports computer simulation and design creative solutions to small batch injection uniformity key technical problems. In the temperature control, the use of water cooling jig and dynamically monitor the temperature to ensure that the last injection when the parts of the machine parts will not exceed the heat treatment temperature.

Injection turbojet engine oil proxy spindle bearing long-term post-test measurements indicate that the size and rotation of injection precision bearings no significant change, better surface quality than non-injected bearings, can continue to use. In order to fully test the effect of the injection, the injected gas turbine bearings mounted on a test run, using 1400h decomposition examination, no significant changes in the size and precision, you can continue to use; and without the injection of badly worn bearing surfaces, pits more, We can not continue to use. The results proved that the ion implantation technique is an effective way to extend the life of aeroengine bearings.