Hangzhou Dongjiang Friction Materials Co., Ltd.
2019/08/26
Welcome to Hangzhou Dongjiang Friction Co., Ltd.!
Hangzhou Dongjiang Friction Materials Co., Ltd. manufactures and sells various friction products including copper-based, iron-based, graphite-based, carbon-carbon composite materials, semi-metallic, molybdenum-sprayed products, steel mating parts, wear-reducing products, and clutch assemblies. The products are widely used in construction machinery, agricultural machinery, mining machinery, ships and automobiles, high-speed trains, forging machine tools, general machinery, machine tool electrical appliances, speed-regulating clutches...
2019/08/26
Dry Goods! Analysis of Favorable Factors for the Development of the Domestic Auto Parts Market
In recent years, with the annual increase in automobile production and sales, the revenue and profit scale of China's automobile manufacturing and parts industry have further increased. However, due to intense industry competition and other factors, the overall industry profit margin has declined, and the competitive landscape within the industry has become differentiated. Some highly competitive vehicle and parts manufacturing enterprises have still maintained good profit margin levels...
2022/11/21
Brake pads, also known as brake linings, are the most critical safety components in the braking system. The effectiveness of all braking depends decisively on the brake pads, so good brake pads are the protectors of both people and vehicles. Brake pads generally consist of a steel plate, an adhesive heat insulation layer, and a friction block. The heat insulation layer is made of non-heat-conductive materials to provide thermal insulation. The friction block is composed of friction materials and adhesives; during braking, it is pressed against the brake disc or brake drum to generate friction, thereby slowing down the vehicle. Due to friction, the friction block gradually wears out. Generally, lower-cost brake pads wear out faster. Once the friction material is used up, the brake pads must be replaced promptly; otherwise, the steel plate will directly contact the brake disc, ultimately losing braking effectiveness and damaging the brake disc. The torque required to stop or slow down mechanical moving parts is called braking torque. Braking torque is the basis for designing and selecting brakes, and its magnitude is determined by the type and operational requirements of the machinery. The performance of the friction materials (brake components) used on the brake affects the braking process, with the main influencing factors being operating temperature and temperature rise rate. Friction materials should have a high and stable coefficient of friction and good wear resistance. Friction materials are divided into metallic and non-metallic types. Common metallic materials include cast iron, steel, bronze, and powder metallurgy friction materials, while non-metallic materials include leather, rubber, wood, and asbestos.
2022/11/21
What is the difference between dry and wet friction plates?
Regarding the classification of friction pads, they can be divided into two types: dry and wet. Due to different usage, there is a significant difference between dry and wet types. Many car owners are not aware of the differences between dry and wet friction pads. Therefore, the following will introduce the differences between dry and wet friction pads.
2022/11/21
Analysis and Solutions to Common Problems of Brake Friction Pads
The friction coefficient of brake pads being too high or too low will affect the braking performance of a car. Especially when a car needs to brake urgently at high speed, a friction coefficient that is too low will result in unresponsive braking, while a friction coefficient that is too high will cause the tires to lock up, leading to vehicle fishtailing and skidding, posing a serious threat to driving safety. According to national standards, the suitable operating temperature for brake pads is 100~350°C. However, many inferior brake pads experience a sharp drop in friction coefficient when the temperature reaches 250°C, causing complete brake failure at that point. Generally, according to SAE standards, brake pad manufacturers select the FF grade rated coefficient, with a friction rated coefficient of 0.35~0.45.
2022/11/21
Analysis of the Main Causes of Burnout of the Variable Speed Clutch Friction Plate
Based on the oxidation level of the transmission parts' surfaces and the hydraulic oil, it is determined that the hydraulic system's oil temperature is too high. This high oil temperature is caused by components such as the hydraulic pump, oil filter, cooler, and the hydraulic oil itself within the hydraulic system. Specifically, excessive impurities in the hydraulic oil cause the oil filter to become blocked, obstructing the hydraulic system's circulation, leading to poor cooling and overly rapid circulation, which raises the oil temperature. The increased oil temperature causes the rubber seals inside the transmission clutch to age, deform, and crack, reducing their performance and lifespan. This results in poor engagement between the clutch's primary and secondary plates, slipping between these plates, incomplete clutch separation, increased friction resistance, and consequently accelerates severe wear of the clutch friction plates.
Hotline
Address: 240 meters west of the intersection of Tangxin Line and Jianhua Road, Qiantang District, Hangzhou, Zhejiang Province
Email:HRdjmc@hzdjfm.com
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