Continuous casting slabs or primary rolling slabs are used as raw materials, heated by a stepping furnace, and dephosphorized by high-pressure water, and then enter the roughing mill. The rough rolling material is cut through the head, tail, and then into the finishing mill, and computer-controlled rolling is carried out. After the final rolling, it will go through laminar cooling (computer-controlled cooling rate) and take-up by the coiler to become a straight hair coil. The head and tail of straight hair curls tend to be tongue-shaped and fish-tailed, with poor thickness and width accuracy, and often have wavy, folded, tower-shaped and other defects on the edges. The coil is heavier and the inner diameter of the steel coil is 760mm. (Generally used in the pipe-making industry.) After straightening the hair through the cutting head, tail cutting, trimming and multi-pass straightening and smoothing finishing lines, and then cutting or re-rolling, it becomes: hot rolling steel plates, flat hot rolled steel coils, slitting tapes and other products. If the hot-rolled finishing coil is pickled to remove scale and coated with oil, it will become a hot-rolled pickled coil.
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There is no friction on the earth. Human life will not be able to imagine. "Similarly, cars don't have brake pads made of friction materials, and the tragedies of car crashes and deaths are frequent. Friction materials are used to implement brake transmission functions for transportation vehicles and mechanical equipment. The parts and components materials, of which the automotive industry consumes more than 80% of the market share, are mainly composed of three parts: polymer binders, reinforcing fibers, and friction modifiers. Clutch discs, although not very large in automobiles, have a special role in safety protection.
In recent years, China's friction material industry has made new progress in independent innovation, and successfully developed the "high-performance carbon/carbon aerodynamic brake material preparation technology", which has enabled China to become the aviation brake material production technology after Britain, France and the United States. The country won the national first prize for major technological inventions. China's own proprietary intellectual property rights and the use of domestic raw materials for the production of friction materials has entered the high-end applications in the international market, successfully achieved the world's leading car giants the United States Daimlers - Chrysler and Ford companies supporting.
More than 200 experts from 26 countries and regions including Europe, the United States, and Japan, as well as more than 2,000 representatives from domestic friction seal materials industry participated in this session.
China is marching toward the world's largest friction material country
After China has become the world's second largest consumer of automobiles, China's friction material industry has taken a ride and the growth of major economic indicators has doubled. It is no longer empty words to become bigger and stronger. This was revealed by Wang Yao, president of the China Friction Material Association at the 8th (Beijing) International Friction Sealing Material Technology Exchange Conference on June 9.