A few days ago, more than 30 tons of automotive brake silent pad steel produced by BJSG Special Steel Group's tin plate division was successfully delivered to a leading automotive brake system manufacturer. All indicators of the product meet user requirements, marking the development of BJSG cold-rolled special steel. The manufacturing level has reached a new level, becoming China's second steel mill with supply capabilities in this field. Seiko products such as silent brake pads produced by this automobile brake system manufacturer are mainly supplied to high-end automobile brands.
The silent car brake pad is an accessory used to reduce or eliminate the noise during braking in the car brake system. It is a key component to ensure the safety and comfort of the car. It is made of cold-rolled coated steel plate, cold-formed steel coated with rubber coating, and then fine blanked into sheets. Its working principle is to use rubber coating to form a "one-way damping structure" to pass the noise generated by the braking process The vibration is converted into heat to reduce noise.
The steel for silent brake pads is a special product with ultra-thin, high-strength and high-hardness. It has strict requirements on the shape, hardness and tensile strength of the strip steel. It is difficult to guarantee the performance hit rate by the conventional annealing process. For this reason, BJSG specially organizes the manufacturing department, technical center and relevant professional technical backbones of each operation department to set up a product research and development team. According to product characteristics and customer use characteristics, it organizes several discussions and designs, and finally determines the use of steel-making hot-rolling differentiated technology and Cold rolling incomplete annealing process, and a detailed technical notice has been formulated. Each process is accurately controlled in strict accordance with technical requirements to ensure excellent product performance. Since the steel used for the silent brake pads is used as a rubberized substrate, users require that the surface of the strip steel should not have any residual oil. By adopting measures such as detailed production preparations and strengthening solution management in the degreasing process, they effectively ensured the cleanliness of the strip surface. In the rewinding unit, they first stopped wiping the rolls and then produced an appropriate amount of pull roll material, and then produced silent brake pads. The steel production organization method finally realized oil-free delivery of products.