One of the welding methods: pressure welding

Pressure welding is a welding method that permanently connects metal materials together by heating and applying pressure. This method can make the two welds in close contact, and produce a certain amount of plastic deformation at the welding site, which promotes atomic diffusion and welds the two together. Pressure welding is suitable for connecting metal materials to metal materials, and welding is achieved by pressurization. When welding 316 stainless steel, pressure welding is a welding method that can be used to connect metal materials to metal materials through pressurization. This welding method is widely used in many fields in the manufacturing industry. The following are the application scenarios of pressure welding:

1. Automobile industry: Pressure welding plays an important role in automobile manufacturing. It is used to connect various parts of the car to ensure the structural strength and safety of the vehicle.

2. Aerospace: In the field of aerospace, pressure welding is used to connect various metal parts to meet extremely high structural strength and safety requirements.

3. Electronic and power equipment: Pressure welding is also widely used in the manufacture of electronic and power equipment, such as connecting circuit boards and electronic components to ensure the performance and reliability of the equipment. ‌
4. Construction industry: In the construction industry, pressure welding is used to connect building materials such as steel bars to enhance the stability and safety of building structures. ‌

Specific methods of pressure welding include ultrasonic welding, diffusion welding, explosion welding, gas pressure welding and cold pressure welding, etc. Each method has its specific application scenarios and technical requirements. ‌For example: ‌
1. Ultrasonic welding uses the high-frequency oscillation of ultrasound to locally heat and clean the weld joint, and then applies pressure to achieve spot welding or seam welding. ‌
2. Diffusion welding is to heat and apply pressure in a vacuum or protective gas environment to make the weldment fit tightly, so that the atoms between the contact surfaces diffuse with each other to complete the welding. ‌
3. Explosion welding uses explosives as energy, and uses the shock wave generated by the explosion of explosives to make two or more layers of materials collide at high speed and combine them together. ‌
4. Gas pressure welding uses oxygen and acetylene flames to heat the steel bar joints, and applies pressure when the temperature reaches the plastic state to press the steel bar joints together. ‌
5. Cold pressure welding is a method of achieving solid-state welding by using pressure to cause plastic deformation of the metal to be welded at room temperature. ‌