On December 16, 2011, the 6th China Passenger Car Industry 2011-2012 Reader's Survey Results Announcement & Awards Ceremony was held at Hua Shan Park Hot Spring Hotel in Beijing. The 6th China Bus Industry 2012 Product Selection Review was approved. The result was also revealed. Among them, Talmer Light series retarder received 3,896 votes and received the matching recommended product award.
Light series retarder is a new series of retarder developed for the characteristics of the current 12 meters and above vehicles, its braking torque reaches 2600 ~ 3000Nm, and weight and volume remain basically the same with FN72-40 retarder. The Light Series retarder meets the increasing demand for retarder braking torque caused by the increasing full-load quality and decreasing rear axle ratio in the current vehicle design, and does not increase the additional burden on the vehicle.
Asbestos was added as an common ingredient to Brake Pads post-WWI, as car speeds began to increase, because research showed that its properties allowed it to absorb the heat (which can reach 500 °F) while still providing the friction necessary to stop a vehicle. However, as the serious health-related hazards of asbestos eventually started to become apparent, other materials had to be found. Asbestos brake pads have largely been replaced by non-asbestos organic (NAO) materials in first world countries. Today, brake pad materials are classified into one of four principal categories, as follows:
Non-metallic materials - these are made from a combination of various synthetic substances bonded into a composite, principally in the form of cellulose, aramid, PAN, and sintered glass. They are gentle on rotors, but produce a fair amount of dust, thus having a short service life.
Semi-metallic materials - synthetics mixed with varying proportions of flaked metals. These are harder than non-metallic pads, more fade-resistant and longer lasting, but at the cost of increased wear to the rotor/drum which then must be replaced sooner. They also require more actuating force than non-metallic pads in order to generate braking torque.
Fully metallic materials - these pads are used only in racing vehicles, and are composed of sintered steel without any synthetic additives. They are very long-lasting, but require more force to slow a vehicle while wearing off the rotors faster. They also tend to be very loud.
Ceramic materials - Composed of clay and porcelain bonded to copper flakes and filaments, these are a good compromise between the durability of the metal pads, grip and fade resistance of the synthetic variety. Their principal drawback, however, is that unlike the previous three types, despite the presence of the copper (which has a high thermal conductivity), ceramic pads generally do not dissipate heat well, which can eventually cause the pads or other components of the braking system to warp.However, because the ceramic materials causes the braking sound to be elevated beyond that of human hearing, they are exceptionally quiet.
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