High-strength nut information introduction

1. Definitions and Characteristics

Definition: A high-strength nut is a type of Bolt with high strength and load-bearing capacity, and is usually used for joints that need to withstand large loads or repeatedly disassemble and assemble.
Peculiarity:
Strict performance of raw materials: high-strength nuts have strict performance requirements for raw materials to ensure that they have sufficient strength and toughness.
Easy to assemble and disassemble: The high-strength nut is easy to assemble, rigid, easy to disassemble and assemble, and can be recycled.
Excellent connection performance: By deliberately applying pretension, the high-strength nut generates a squeezing force between the connected parts, and relies on friction to transmit the connection shear force, which has excellent connection performance and stability.
Second, the manufacturing process

The manufacturing process of high-strength nuts mainly includes the following steps:

Steel stamping: Steel is stamped into the basic shape of a nut.
Tapping (threading): Machining the desired thread on the basic shape.
Heat treatment: Heat treatment of the nut to improve its hardness and strength.
Surface treatment: surface treatment of the nut as needed, such as nickel phosphorus plating, etc., to improve its anti-corrosion performance and coefficient of friction.
Third, the field of application

High-strength nuts are widely used in the following fields:

Bridge construction: In the construction of bridges, high-strength nuts are used to connect and fix various parts of the bridge to ensure the stability and safety of the bridge.
Steel production: In the process of steel production, high-strength nuts are used to connect and fix steel plates, steel beams and other components to improve the strength and stability of the overall structure.
High-voltage equipment connection: In the connection of high-voltage equipment, high-strength nuts are used to withstand the connection needs under complex working conditions such as high pressure and vibration.
Connection of important machinery and equipment: High-strength nuts are also widely used in the connection of aircraft, automobiles, trains, ships and other means of transportation and various important machinery and equipment to ensure the safety and reliability of the connection.
Fourth, standards and grades

The use of high-strength nuts is gradually widespread, generally by two strength grades, 8.8s and 10.9s, of which 10.9 is the majority.

5. Surface treatment and technology

In order to adjust the coefficient of friction and prevent rust from getting stuck, high-strength nuts are generally coated with a layer of nickel phosphorus on the surface. The process includes pre-plating, electroless nickel plating and post-treatment to ensure the finish and anti-corrosion performance of the nut surface.

To sum up, high-strength nut is a standard part with excellent performance and wide application, which has strict manufacturing process, wide application fields, various standards and grades, and is an indispensable and important component in the modern industrial field