A manufacturing process for a type of stainless bearing steel has been submitted for patent application
On April 22, 2025, the Central Iron & Steel Research Institute Co., Ltd. recently submitted a patent application titled "A Preparation Process for Stainless Bearing Steel" to the National Intellectual Property Administration, with the publication number CN119843020A and an application date of December 2024.
The patent description states that this invention belongs to the field of alloy steel technology and aims to address the shortcomings of traditional bearing steel in terms of high-temperature hardness, wear resistance, corrosion resistance, and machinability. The preparation method includes the following key steps: First, raw materials are prepared according to the target alloy's composition requirements, based on high-carbon, high-chromium molybdenum-vanadium alloy steel. Next, the materials are melted and cast into steel ingots. The ingots are then processed into preforms through forging. Finally, the preforms undergo heat treatment processes such as annealing, quenching, and high-temperature tempering to produce bearing steel with superior comprehensive performance. This process significantly improves the steel's performance across multiple metrics, making it outperform similar products currently available on the market.
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