China Baowu Steel Group has patented a softening method for high-strength Q & P steel hot-rolled coils. The innovative process eliminates the need for intermediate annealing, reducing costs and increasing efficiency. The method involves specific steps like insulating enclosures and controlled cooling for optimal results. GlobalData’s report on China Baowu Steel Group gives a 360-degree view of the company including its patenting strategy. Buy the report here.
Smarter leaders trust GlobalData
According to GlobalData’s company profile on China Baowu Steel Group, AI for workflow management was a key innovation area identified from patents. China Baowu Steel Group's grant share as of May 2024 was 69%. Grant share is based on the ratio of number of grants to total number of patents.
Softening method for high-strength q & p steel coils
A recently granted patent (Publication Number: US11981972B2) discloses a softening method for high-strength Q & P steel hot-rolled coils. The method involves a series of steps including rough rolling, finish rolling, laminar cooling, and coiling to obtain a hot-rolled coil. After unloading the coil, it is covered with an insulating enclosure unit within 60 minutes and moved into a steel coil warehouse for an additional 60 minutes of insulation. The hot-rolled coil is then cooled to room temperature in air, resulting in a yield strength reduction of =85 MPa and a tensile strength reduction of =150 MPa, with an elongation of =15%. The microstructure of the steel coil post-treatment is mainly bainite+cementite.
Furthermore, the method specifies heating the ingot at temperatures ranging from =1150° C. to 1200-1300° C., with soaking times varying from 60 minutes to 1-3 hours. The rough rolling and finish rolling are performed in a temperature zone for complete austenization, with an overall hot rolling reduction rate of =90% and a final rolling temperature of 800-1000° C. Each hot-rolled coil is individually covered with an insulating enclosure within 20 minutes of unloading, and cooled at a rate of =15° C./hour within the enclosure for an insulating time of 1-24 hours. The coiling is done at a temperature of 400-523° C., contributing to the overall softening process of the high-strength Q & P steel hot-rolled coil.
To know more about GlobalData’s detailed insights on China Baowu Steel Group, buy the report here.
Data Insights
From
The gold standard of business intelligence.
Blending expert knowledge with cutting-edge technology, GlobalData’s unrivalled proprietary data will enable you to decode what’s happening in your market. You can make better informed decisions and gain a future-proof advantage over your competitors.
GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.
GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
