Comparative analysis of metal scratch repair methods

Technical measures to solve metal wear or surface scratches with traditional technology

(1) Repair welding + processing: This repair method is one of the most traditional methods to solve metal wear and tear, and this type of repair technology has inevitable repair defects.

a. The welding process has a thermal stress effect on the metal, which is easy to damage the equipment twice;

b. Due to welding accuracy problems, the repaired parts after welding are more difficult to operate in the process of machining or fitter restoration;

c. The repaired parts are extremely prone to deformation, which affects the operation accuracy of the equipment.

(2) Brush plating repair: For the repair of minor defects such as local scratches or surface wear, this process can be used. At the same time, the biggest disadvantage of the brush plating repair process is

a. The entire surface is brush-plated, it is not easy to handle the partial scratches or defects in the middle part, and the repaired part has the problem of delamination or bad 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 repairable range is greatly limited.

Technical measures for carbon nano coating to solve all kinds of metal wear or surface scratches

The application process of carbon nano polymer materials is very simple and convenient. After analyzing the operating environment parameters, repairing wear or scratches according to a certain construction process, the commonly used repair processes are as follows:

a. Machining repair process: This process uses carbon nano polymer materials to first restore the worn or scratched parts, and uses machining methods to process the repair materials to ensure the shape and position tolerance requirements of shaft parts or other parts;

b. Repair process of component correspondence: use the mutual cooperation of the original components during the operation of the equipment to complete the online repair technology of the worn parts. 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 the metal;

c. Tooling and mold repair process: According to the original design drawing size of the parts or the actual size measured on site, the corresponding repair tooling is made, combined with the application characteristics of the carbon nano repair material to complete the repair of the worn parts, which can well ensure the shape of the shaft parts. Tolerance requirements.

Industrial carbon nano-polymer repair technology is similar to a cold welding technology, and its advantages are excellent compression resistance, corrosion resistance and thermal alternating resistance, and at the same time, it has high chemical stability and good physical and mechanical properties. Adheres to the metal surface and does not fall off easily High temperature will not be generated during the online repair process, and the equipment body is well protected from damage, and the repair process is not limited by the amount of wear.