Techinical news

Haosail sheet metal repair machine

Apr 23, 2025

The sheet metal repair machine is a highly efficient and multi-functional device, specifically designed for repairing the sheet metal components of automobiles, motorcycles, and other metal products. The working principle of these machines is based on the heat generated when an electric current passes through the metal sheet. The heat is sufficient to locally melt the metal, thus achieving the purpose of repair.

### Detailed Principle

The core principle of the sheet metal repair machine is to utilize the thermal effect of resistance. When an electric current passes through the metal sheet, the resistance of the metal causes the current to generate heat at the contact point.

This heat is sufficient to locally melt the metal sheet, making it softer and easier to shape. By precisely controlling the magnitude and duration of the electric current, the repair machine can carry out delicate repair work on the metal sheet.

During the repair process, the repair machine usually has two electrodes. One is fixed on the vehicle as a reference point, and the other is used to make contact with the area that needs to be repaired. By adjusting the voltage and current, the maintenance technician can precisely control the stretching and shaping process of the metal sheet, restoring it to its original shape.


In addition, the sheet metal repair machine also has a variety of functions, such as medium melting welding, spot welding, and carbon rod heating quenching. These functions enable the repair machine not only to stretch and shape the metal sheet but also to perform welding and heating treatments, such as welding washers, studs, bolts, star-shaped weldments, etc., as well as metal shrinkage and heating treatments.


### Wide Application Range

The sheet metal repair machine has a very wide application range. It can be used not only for the repair of automobile body sheet metal, such as the repair of dents and deformations on car doors and bumpers, but also for the repair of sheet metal components of furniture, electrical appliances, and other metal products.


In the field of automobile maintenance, the sheet metal repair machine is an important tool for the repair of the vehicle body's appearance. It can help maintenance technicians quickly and effectively repair the dents and deformations on the outer panels of the vehicle body, restoring the vehicle body to its original appearance. In addition, the welding function of the sheet metal repair machine enables it to perform operations such as single-sided electric welding, medium-temperature welding, electric heating fire extinguishing, carbon rod repair welding and heating, and steel plate pressing. These operations are crucial during the repair process.


Using the sheet metal repair machine not only improves the repair efficiency but also saves time and cost. Compared with traditional repair methods, the sheet metal repair machine can complete the repair work in a short time without the need to replace the entire component, thus reducing the repair cost. In conclusion, relying on its thermal resistance principle and multi-functional operation, the sheet metal repair machine provides an efficient and precise solution for the repair of metal sheets. Whether in automobile repair or the repair of other metal products, the sheet metal repair machine demonstrates its unique value and importance.


In order to better serve our international customers, we have established operation and experience centers in Africa, the Middle East, and Singapore. These centers provide localized services to ensure that our customers can obtain the necessary support regardless of their location.


Quality is at the core of all Haosail's work. Our products have passed the third-party inspection of the quality management system of the Elite Testing Center, ensuring that the products meet the highest quality and reliability standards.


We look forward to establishing long-term cooperative relationships with our customers. We not only provide product sales but also offer support for project contracts. Haofan is not just a supplier; from the initial stage of the project to its final successful completion, we are your partner.