Pieces of equal-thickness marble slabs are cut exactly by marble row saw blades arranged side by side. This product has long been monopolized by steel companies in advanced countries such as Europe. In 2020, this product imported for 30 years was finally replaced by row saw blade steel of BJSG Special Steel Technology Group.
Marble row saw blade steel can be said to be the pearl of sawing tool steel. The broken belt of the row saw blade steel failed during work, which directly caused the damage of the expensive slate. Because of this, the distribution ratio of row saw blade steel pairs is strict, and the requirements for the purity, uniformity, and density of molten steel are strict. The amount of steel used by Chinese stone factories basically depends on imports. Independent innovation and localization of gang saw steel have become the pursuit of Chinese steel mills. But this road of independent innovation is not smooth and full of bumps.
At the beginning of 2020, China's leading special cutting tool technology company, GZGS Special Steel Tool Technology Group, proposed to BJSG the intention to cooperate in the development of steel for gang saws, hoping to develop new steel grades and lead the Chinese row saw blade steel market. As a brand new composition system for row saw blade steel, without the guidance of relevant domestic and foreign production experience, the BJSG special steel R&D technical team relies on the existing high-carbon steel production data to overcome difficulties through data simulation and calculations. , Constantly explore the production process. Independent research and development, independent design, optimization of parameters, and implementation of full-process control.
R&D is not easy, production is not easy, and stable quality is even more difficult. After repeated debugging and optimization, it took nearly 3 months to finally complete the R&D and production of high-end row saw steel and meet the requirements of the technical agreement.
End-user data indicate that the row saw blade steel produced by BJSG has excellent performance in all aspects, and the interruption rate in the marble sawing process is significantly reduced, which is far below the industry's 5% requirement. The performance meets or exceeds German products and can completely replace imports.