Chengdu Advanced Metal Materials Industry Technology Research Institute Co., Ltd. recently applied for a patent called "G13Cr4Mo4Ni4V Bearing Steel Preparation Process". The patent number is CN202410935357.2, and the application time is July 2024.
The patent abstract states that the invention belongs to the field of metal materials and provides a method for manufacturing G13Cr4Mo4Ni4V bearing steel. The method includes: preparing raw materials according to a prescribed ratio and performing a smelting process, and then homogenizing the smelted alloy. ; Then, the obtained ingot is forged and processed through multiple passes of upsetting and drawing processes, and then annealed, and then rolled; then, the forged ingot is processed using progressive pulse carburizing technology. The workpiece is subjected to high-temperature quenching in a vacuum, followed by cooling; finally, the quenched material is vacuum tempered and cooled again to complete the entire heat treatment process. Through the above process, the present invention can not only significantly increase the hardness and carburized layer thickness of the bearing steel surface, but also maintain the high strength and toughness of the core of the material.
Keyword: metal cnc machining