Physical recycling, making "waste material" useful "material"
Humans have mixed feelings about plastic.
On the one hand, its excellent stability brings convenience to human daily life; on the other hand, the consequent waste plastic is difficult to degrade in the natural environment, adding to the burden of the earth day after day.
Therefore, how to improve the recycling rate of plastics, expand the application of recycled and reclaimed materials, and reduce resource consumption and environmental pollution is an important issue in front of mankind.
As a plastic recycling technology that complements chemical recycling (←click to view), physical recycling has become the mainstream way to recycle plastics due to its simple process, low cost, low investment and wide application of products.
What is physical recycling?
Physical recycling (PCR Mechanical) refers to the recycling of waste plastics through sorting, cleaning, crushing, melting and granulation and then directly used in moulding processes.
Currently, physical recycling is mostly used to process waste plastics such as PET, PE and PVC, which can be used to make PET bottles, household products, car parts, rubbish bags, agricultural recycled water pipes, etc.
The reasonable choice of materials and the requirements of the prescribed heat treatment for drop-forged parts are important to increase the strength and service life of shaft components and, at the same time, have a large impact on the processing of shafts. Shaft components are generally made of 45 steel, with different heat treatment specifications (e.g. normalised, tempered, quenched, etc.) to obtain strength, toughness and resistance to wear, depending on the working conditions.