Introduction to the Characteristics of Scaffold Fasteners
Scaffold fasteners belong to the field of construction machinery parts. This scaffold fastener consists of two sub fasteners. The lower end of each sub fastener is connected to a joint bolt, and the larger end is connected to an upper fastener with a notch and a thrust surface. The two sub fasteners are connected by rolling and riveting, and can rotate at any angle. Scaffold fasteners are intermediate connecting parts that connect steel rails and sleepers.
Its function is to fix the steel rail on the sleeper, maintain the track gauge, and prevent the longitudinal and transverse movement of the steel rail relative to the sleeper. On the track of concrete sleepers, due to the poor elasticity of concrete sleepers, fasteners still need to provide sufficient elasticity. For this purpose, fasteners must have sufficient strength, durability, and a certain degree of elasticity, and effectively maintain a reliable connection between the steel rails and sleepers.
This model of scaffold fastener has substantial features and significant progress, reducing the number of parts and lowering costs. Moreover, due to the fact that the thickness of the material flange is greater than that of the hollow rivet, it increases the tensile strength and greatly improves the torque resistance rigidity. Fastener alloy: Fastener alloy, also known as white alloy, is mainly an alloy of tin, lead, antimony or other metals. Due to its good wear resistance, high plasticity, good running in performance, good thermal conductivity, good resistance to adhesive and adhesion to oil.
Therefore, it is suitable for heavy-duty and high-speed situations. The strength of the fastener alloy is relatively small and the price is expensive. When used, it must be poured onto bronze, steel strip or cast iron fasteners to form a thin coating. In terms of heat treatment technology, the development of fastener prices from bottom furnace and hood furnace to continuous controllable atmosphere annealing furnace heat treatment. Regarding the support material for the grinding material - the center of the grinding material is too high.
The contact between the grinding material and the adjustment wheel and the supporting knife is incomplete, the supporting knife tip angle or thickness is too thin, the supporting knife or knife holder or folding table is not fully locked, and the adjustment wheel and flange or flange and adjustment wheel axle are not locked. The finished product of rolled (forged) material should be rapidly cooled to 650 ℃ to prevent the precipitation of cementite in a network like manner at grain boundaries. If conditions permit, controlled rolling technology can be used. Under certain special operating conditions, building fasteners can achieve a lifespan that is better than traditional calculations.
Especially under light load conditions. Many corrosion-resistant steels also have fasteners that can withstand high temperatures. The two types of steels are often interchangeable, but their goals are different. High temperature steels require high temperature hardness and stability in size and shape accuracy, while corrosion-resistant steels require chemical stability.
