Recently, our trial production of 110mm extra thick Q550D high strength steel plate has been successful, breaking the original upper limit of 100mm thickness. This batch of Q550D steel plate has good shape and performance, and has been highly recognized by customers.
Q550D high strength steel plate is mainly used in special working environment such as mine and construction machinery, which has high requirements for low-temperature impact toughness and strength. Due to the complex chemical composition, there are too many influencing factors in the process of rolling, water cooling and tempering, and it is difficult to control the shape and performance of the Q550D high strength steel plate. Especially for the high-strength steel with limited thickness, if the compression ratio is too small, the overall performance uniformity of the steel plate is difficult to be guaranteed It is difficult to produce.
The successful trial production of 110mm extra thick Q550D high strength steel plate further verifies our strong control ability to the rolling technology of limit specification, and also provides support for BBN steel to create a high-value, diversified and series of high-strength steel boutique combination.
