Application of Supersonic Spraying Technology in Remanufacturing Engineering

       Application of Supersonic Spraying Technology in Remanufacturing Engineering

An important feature of remanufacturing is that the quality and performance of remanufactured products reach or exceed those of new products, but the cost is only 50% of that of new products, 60% of energy saving, and 70% of materials are saved. The adverse impact on the environment is significantly lower than that of new products.

Remanufacturing is different from equipment repair and equipment recycling (recycling). Maintenance is a technical measure taken to keep the product in good condition during the use phase of the product, and it is often random, in-situ, and emergency. Remanufacturing is to disassemble a large number of waste products, test them according to the type of parts, use the parts with remanufacturing value as blanks, and use advanced surface technology and other high-tech to repair them in batches and upgrade their performance. The technical performance of remanufactured products can reach or even exceed new products.

Recycling (recycling) is to obtain low-grade raw materials through smelting and other processing methods, and more energy is consumed in recycling, which has a greater impact on the environment. Remanufacturing uses waste molded parts as resources, and obtains high-quality, high-value-added products through high-tech processing, consumes less energy, and maximizes the recovery of the added value contained in waste parts. The production cost is far much lower than new.

Remanufacturing engineering needs to be supported by specific key technologies. Advanced surface engineering and nano-surface engineering technology are one of the most important key technologies in remanufacturing engineering. Supersonic spraying technology is an important component technology of (nano) surface engineering. Its essence is to heat the material to be sprayed to a molten or semi-melted state, and then quickly spray to the substrate under the action of high-speed pressure gas, and finally accumulate and form through collision and deformation. There are many thermal spraying methods, among which high-speed arc spraying and supersonic plasma spraying are widely used. Nanostructured coatings can be prepared by supersonic plasma spraying.