Technical measures to solve metal wear or surface scratch by traditional process
(1) Repair welding+processing: this repair method is one of the most traditional methods to solve metal abrasion and scratch, and there are inevitable repair defects in this repair process.
a. The welding process produces thermal stress on the metal, which is easy to damage the equipment twice;
b. Due to the problem of welding accuracy, it is more difficult to operate the repaired parts after welding in the process of machining or bench worker restoring size;
c. Parts repaired by welding are easy to deform and affect the operation accuracy of equipment.
(2) Brush plating repair: This process can be used to repair minor defects such as local scratches or surface wear. At the same time, the biggest disadvantage of the brush plating repair process is
a. The surface is brushed and plated as a whole, which makes it difficult to operate the local scratches or defects in the middle part, and the repaired part has the problem of delamination or poor combination with the original metal material;
B. This repair process can only be used for metal wear with a wear depth of less than 0.3mm, and the scope of repair is greatly limited.
Technical Measures to Solve Wear or Surface Scratches of Various Metals by Carbon Nanocoatings
The application process of carbon nano polymer materials is very simple and convenient. After the analysis of operating environment parameters, wear or scratches are repaired according to a certain construction process. Common repair processes are as follows:
a. Machining repair process: this process uses carbon nano polymer materials to first recover the worn or scratched parts, and uses machining methods to process the dimensions of repair materials to ensure the shape and position tolerance requirements of shaft parts or other parts;
b. Component correspondence repair process: the online repair technology of worn parts is completed by using the mutual cooperation of original components during equipment operation. This repair process can ensure the effective mating surface of the two parts to the greatest extent, far exceeding the contact surface between the original metal and metal;
c. Tooling and mold repair process: make corresponding repair tooling according to the original design drawing size of parts or the actual size measured on site, and complete the repair of worn parts in combination with the application characteristics of carbon nano repair materials, which can well ensure the shape and position tolerance requirements of shaft parts.
The industrial carbon nano polymer repair technology is similar to a cold welding technology. Its advantages are that it has excellent compression resistance, corrosion resistance and thermal alternation resistance, as well as high chemical stability and good physical and mechanical properties. It can firmly adhere to the metal surface without falling off easily. The online repair process will not produce high temperature, which will protect the equipment body from damage and will not be limited by wear during the repair process.
