Recently, the 20CrMnTi gear steel developed by Jiugang has made significant progress - the product's hardenability value has reached the national standard requirements for intermediate products in the mechanical industry, and it has obtained a high-end special steel "ID card", successfully promoting it to the high-quality gear steel series.

As the main steel type of gear steel, 20CrMnTi is a high-quality alloy structural steel that dominates the gear industry and is mainly used to produce gear components for automobiles, wind power, and mechanical equipment. Due to its importance and specificity in use, users have extremely high requirements for product performance. But for many years, there has been a lack of professional testing methods within the company, making it even more difficult to meet the standards.

The road must be taken step by step; Things need to be done bit by bit. The TiN inclusions in the 20CrMnTi composition have a high hardness, which affects its processing performance and generates fatigue sources during use, affecting the service life of the gear. In order to develop high-quality 20CrMnTi steel, Hongxing Iron and Steel Research Institute established a gear steel research and development team at the Plate Wire Rod Research Institute. Through research, breakthroughs, and breakthroughs, they overcame the "hard bone" in 6 years.

In 2018, technicians visited and researched the Southwest market to understand the consumption characteristics, demand, personalized standards, etc. of gear steel. They established a research and development direction from easy to difficult, drafted and formulated a smelting test plan, and carried out preliminary preparations for research and development.

In 2019, technicians held multiple special meetings based on refining slag experiments, Ti addition experiments, and trial rolling to analyze the exposed problems, adjust smelting and rolling plans, and verify the adjusted smelting process parameters.

In 2020, technicians began smelting 20CrMnTi steel. After third-party inspection, the physical properties of the 25mm diameter gear bar produced by trial rolling met the technical requirements. The performance of the "171 model hexagonal shaft" product processed met the user's requirements and met the supply conditions.

In 2024, the steel market will be severe, and the refining and rolling mills will "put down" valuable but unsold rebar and "pick up" stable demand alloy bars. Undoubtedly, the high-efficiency product 20CrMnTi will once again become a key "cultivation object".

20CrMnTi steel must undergo heat treatment to achieve the required properties for processing and use, with the aim of improving surface hardness, wear resistance, and fatigue strength. During the production process, technical and operational personnel further optimize the production process, strengthen temperature management, strictly control dimensions, and especially focus on the heat treatment process to ensure that the steel core has sufficient strength and toughness, excellent corrosion resistance, and weldability.

According to the inspection results feedback from Xi'an University of Architecture and Technology, the 20CrMnTi steel developed and produced by Jiugang fully meets the processing requirements of customers, especially the quenching value index meets the national standard requirements for intermediate products in the mechanical industry, and the product quality reaches a higher level of products of the same level.

In October, Jiugang successfully supplied more than 20 tons of 20CrMnTi steel to a mechanical processing plant in Chongqing, marking the successful entry of Jiugang's high-quality gear steel into the key automotive manufacturing field and injecting new impetus into the enterprise's further exploration of high-end markets and improvement of product competitiveness. "Huang Wensheng, Associate Engineer of Product Research and Development at the Institute of Medium Plate Wire Rod of the Iron and Steel Research Institute, said that in the next step, the Institute will further leverage its technological innovation advantages, strive to make breakthroughs in key core technologies, and transform the" key variables "of technological innovation into the" maximum increment "of high-quality development.