Different Bearing Materials
Bearing steel is used to make balls, rollers, and bearing rings. Bearing steel has a high and uniform hardness, wear resistance, and high elastic limit. The requirements for the uniformity of chemical composition, the content, and distribution of non-metallic inclusions, and the distribution of carbides of bearing steel are very strict.
It is one of the most stringent steel types in all steel production. In 1976, the international organization for Standardization ISO incorporated some general bearing steel grades into international standards and divided bearing steel into four categories: fully hardened bearing steel, case hardened bearing steel, stainless bearing steel, high temperature bearing steel, with a total of 17 steel grades.
Advantages of bearing steel:
1) High contact fatigue strength,
2) After heat treatment, it should have high hardness or hardness that can meet the requirements of bearing performance,
3) High wear resistance, low friction coefficient,
4) High elastic limit,
5) Good impact toughness and fracture toughness,
6) Good dimensional stability,
7) Good rust resistance,
8) Good cold and hot working performance.
What are the advantages and disadvantages of carbon steel?
Advantage
1. Carbon steel can get higher hardness and better wear resistance after heat treatment.
2. The hardness of carbon steel in the annealed state is very moderate, and it also has good machinability.
3. The raw materials of carbon steel are very common and easy to obtain, and the production cost is relatively low.
Shortcoming
1. The thermal hardness of carbon steel will be poor, because when the working temperature of the tool is greater than two Baidu, its hardness and wear resistance will decline sharply. Group purchase of movie tickets
2. The hardenability of carbon steel is very low. The diameter of completely quenched carbon steel is generally about 15-18 mm when it is water quenched, but the diameter or thickness when it is not quenched is only about 6 mm, so it will be easier to deform and crack. Waste products will be recycled. Stainless steel is a kind of material, with a brightness close to the mirror, and strong and cold touch. It is a relatively avant-garde decorative material, with excellent corrosion resistance, and formability It is used in heavy industry, light industry, household goods industry, building decoration, and other industries.
Advantages of stainless steel
Stainless steel offers many advantages to architectural/decorative metal users. The main advantages include its high corrosion resistance, which makes it suitable for harsh environments. It has fire resistance and heat resistance can resist scaling, and maintain strength at high temperatures.
Sanitary, nonporous surfaces coupled with the easy cleaning ability of stainless steel make it the first choice for applications requiring strict hygiene control, such as hospitals, kitchens, and other food processing plants. The beautiful appearance provides a modern and attractive appearance for most architectural metal applications.
Its bright and easy-to-maintain surface makes it a simple choice for applications that require attractive surfaces at all times. It has the advantage of weight so that it can be used less than the thickness of traditional grade materials, which can usually save costs. Due to the use of modern steel-making technology, stainless steel can be cut, processed, manufactured, welded, and shaped like traditional steel, so it is easy to manufacture. The long-term value generated by its long service life usually leads to the cheapest choice of materials.
Stainless steel is a very durable metal, which can withstand the wear and tear of daily activities, otherwise, it will damage the ring. Because the invisible chromium layer can prevent oxidation, hard metals can resist scratches and corrosion; Which makes it the preferred miracle of body jewelry. It's also easier to keep stainless steel jewelry because you don't have to have special cleaning solutions to take care of your wholesale jewelry. Just use warm water, liquid soap, and a little elbow grease, and your stainless steel ring will be as good as new. Because it is not a precious metal, such as gold, silver, or copper, it is very affordable, making stainless steel parts very economical.
Disadvantages of stainless steel
Every metal has its shortcomings, and stainless steel is no exception. Some of the main disadvantages include its high cost, especially when it is considered as an initial cost. When trying to manufacture stainless steel without the use of state-of-the-art machines and appropriate technology, it can be a difficult metal to handle. This usually leads to costly waste and rework. Due to its rapid heat dissipation, it is difficult to weld, which may also produce broken fragments or high waste costs. Last but not least, is the high cost of final polishing and finishing.
