friction material
1. Friction material: It is a polymer ternary composite material, which is a physical and chemical complex. It is composed of three major categories: polymer binder (resin and rubber), reinforcing fiber and friction performance regulator, and other combinations. Agent composition, a product made through a series of production and processing. It is characterized by good friction coefficient and wear resistance, as well as certain heat resistance and mechanical strength, which can meet the performance requirements of vehicle or mechanical transmission and braking. Widely used in brakes and clutch friction plates of vehicles, trains, airplanes, etc., especially brake linings and clutch faces, are very important security parts, and their performance directly affects the stability of the machine and the safety of the passengers. Therefore, there are strict requirements in the process of manufacturing, quality control, inspection, etc. Its main function is to absorb or transmit power through friction, such as clutch plates transmit power, brake plates absorb kinetic energy, they enable mechanical equipment and various motor vehicles to work safely and reliably, so friction materials are widely used And even the key material. In most cases, friction materials rub against various metal pairs. It is generally recognized that under dry friction conditions, materials with a friction coefficient greater than 0.2 are called friction materials.
2. Classification of friction plates: 1. According to the working function, it can be divided into two types of friction materials: transmission and braking. The clutch plate for transmission is to transmit the power generated by the engine to the driving wheels through the bonding and separation of the clutch friction surface in the clutch assembly, so that the vehicle starts to walk. Brake pads for braking (divided into disc type and drum type brake pads), are used to stick the brake pads to the brake disc (drum) through the vehicle braking mechanism to slow down or stop the moving vehicle. 2. According to the shape of the product, it can be divided into brake pads (disc pads, drum pads), brake bands, brake shoes, clutch plates, and heterosexual friction plates. Disc discs are flat, drum discs are arc-shaped, brake shoes (train brake shoes and oil drilling rigs are arc-shaped products, but much thicker than ordinary arc-shaped brake pads, ranging from 25 to 30mm), brake bands (commonly used In agricultural machinery and construction machinery, it is a soft friction material), clutch plates are generally ring-shaped products, and heterosexual friction plates (used in various construction machinery, such as friction presses, electric hoists, etc.).
