Bolts: mechanical parts, with cylindrical nuts with threaded fasteners. A type of fastener consisting of a head and a screw (cylindrical body with external threads) is to be fitted with a nut for fastening the connection of two parts with through-holes. This type of connection is called bolting. Such as the nut from the bolt on the spin down, and can make the two parts apart, so the bolt connection is a removable connection. Bolt inspection can be divided […]
Bolt hardness indicates the ability of a material to resist the intrusion of a hard object into its surface. It is one of the important performance indicators of metal materials. The higher the general hardness, the better wear resistance. Commonly used hardness index Brinell hardness, Rockwell hardness and Vickers hardness.
Brinell hardness (HB) to a certain load (usually 3000kg) to a certain size (diameter is generally 10mm) hardened steel ball pressed into the surface of the material, to maintain a […]
What is the basis for selection of Fasteners , it is a complex issue, T&Y hardware reminder u from five aspects.
1, non-standard bolts and nuts material is in the mechanical properties, particularly strength requirements;
2, the working conditions of the corrosion resistance of the material aspects of the claim;
3, the working temperature on the heat resistance (high-temperature strength, oxidation resistance) requirements;
4, the production process of the material processing performance requirements;
5, other aspects, such as weight, price, purchase factors must be […]