Against the background of the "dual carbon" goal becoming a global consensus, the green transformation of the manufacturing industry is imminent.With the advantages of low energy consumption, low pollution and resource recycling, powder metallurgy technology has become an important force in promoting the low-carbon development of the industry. Its green characteristics are highly in line with the environmental protection needs of modern manufacturing.

Low energy consumption is a prominent manifestation of the green properties of powder metallurgy. In the traditional metal processing process, forging, casting and other processes need to be carried out in a high-temperature environment, and the energy consumption is extremely high. Take the forging process as an example, the manufacture of large metal parts requires heating the metal to more than 1200℃, and the energy consumption of a single piece can reach thousands of kilowatt hours. Although the sintering process of powder metallurgy also requires high temperature, due to the large surface area and high reaction activity of powder particles, the sintering temperature is usually 200-300℃ lower than that of traditional forging, and the insulation time is short. When microwave sintering technology is used, the energy consumption is more than 40% lower than that of traditional resistance furnace sintering.According to the data of a powder metallurgy enterprise, the total energy consumption of the powder metallurgy process is 35% lower than that of the traditional forging process in the production of the same number of automobile gears, which can reduce carbon dioxide emissions by more than 1,000 tons per year.

Less pollution and low emissions are another green advantage of powder metallurgy. Traditional cutting will produce a large amount of metal waste and cutting fluid. If not handled properly, it will cause pollution to the soil and water bodies. In the process of powder metallurgy production, almost all metal powders are used, and the amount of waste generated is less than 5%, and most of the waste can be re-ground into powder recycling to achieve efficient recycling of resources. At the same time, the recovery rate of protective gases (such as nitrogen and hydrogen) used in the powder metallurgy sintering process can reach more than 95% through the recycling and purification system, reducing gas emissions and resource waste.After an electronic component enterprise adopted the powder metallurgy process, the industrial waste emission was reduced by 90%, the cutting fluid usage was reduced by 100%, and the environmental protection treatment cost decreased by 60%.

In addition, powder metallurgy can also help downstream industries achieve low carbon. In the field of new energy vehicles, lightweight parts produced by powder metallurgy technology can reduce the quality of automobile preparation, thus reducing energy consumption and carbon emissions during driving. According to the data, for every 100 kilograms of car quality reduction, the fuel consumption per 100 kilometers can be reduced by 0.3-0.5 liters, and carbon dioxide emissions can be reduced by about 500 kilograms per year. Nowadays, with the deepening of the concept of green manufacturing, the environmental protection advantages of powder metallurgy technology have been paid more and more attention, and it has become an important choice for the manufacturing industry to realize low-carbon transformation.