Language
What is projection welding? [PW01]
Dec 23,2023
What is projection welding?
Projection welding is an evolution of spot welding, that is, a projection point is pre-set on the workpiece, and one or more nuggets are formed at the projection point in turn during projection welding.
Projection welding is used in low carbon steel and low alloy steel plate. The thickness of the plate is generally 0.5-4.0mm. With the application of galvanized plate and high strength steel getting wider, the projection welding process is also applied in galvanized plate and high strength steel.
The main parameters of projection welding process are welding current, welding time and electric force.
Due to current concentration in projection welding, the defect of nugget deviation in spot welding is overcome. In projection welding, the current must drop rapidly with the crushing of the projection point, otherwise it will cause spattering due to loss of voltage.
The parameters of each welding point are constant. The quality of projection welding is less affected by human factors. The technical requirements for operators are low, resulting in high welding production quality.
Application of projection welding machine
Projection welding machines are suitable for welding plates and bars made of carbon steel, stainless steel, alloy steel, galvanized sheet, high-strength steel, and non-ferrous metals. They are widely used in the manufacturing of industries such as automobiles, construction machinery, kitchen appliances, hardware, and metal utensils.
Related News
Wuxi HAIFEI Intelligent Equipment Co., Ltd.
Wuxi HAIFEI Welding Equipment Co., Ltd.
Add: 28 Shuiyun Road, Yuecheng, Jiangyin, Jiangsu Province, China. (Postal Code: 214404)
Mobile: +86 18915302352
Email: wushijie@jshaifei.com