密臀av,大胆亚洲成人社区,美国成人超碰在线播放,日韩操熟妇

At present, the powder metallurgy has been recognized as a green industry, sustainable manufacturing technology. For example, in terms of continuous function, the final forming ability and material utilization of powder metallurgy are high, and the total energy consumption can be minimized. Compared with the traditional process (hot processing + cold processing) casting or forging + cutting compared to the powder metallurgy process manufacturing the same parts only need to use a few more processes, that is, to complete the process more complex process.

In the aspect of material sustainability, the final forming ability of powder metallurgy is its main advantage. For example, forming a dentate part, the traditional cutting process will have up to 40% of the material into chips, and powder metallurgy for all the powder, 85% is recycled by the production of materials. In the powder metallurgy parts production process, the process of waste loss is generally 3% or less, the material utilization rate of up to 95%.

In the area of energy sustainability, the conventional traditional manufacturing process requires several heating and reheating processes to be finalized. When the steel powder or iron powder is produced by atomization, it is only necessary to smel the scrap, all other heat The work is carried out at a temperature below the melting point, which is not only energy efficient but also the final shape and the desired material properties and mechanical properties. Through the metal forming process material utilization comparison found that the manufacture of powder metallurgy parts required energy forging - cutting parts 44%.

In the environmental sustainability, due to the powder metallurgy of the final forming capacity characteristics, in general, after sintering made of finished parts, can be packaged, delivery. In most cases, the processing of powder metallurgy products used by the cutting oil is negligible, and its cooling water and other sources of toxic pollutants released is very small. Compared with other manufacturing processes, the powder metallurgy parts industry is almost no harm to the environment.