The steel balls produced by casting smelting are called cast steel balls; they do not require smelting and casting, but the balls made by forging are called forged steel balls. Although the difference between the two is only one word, the difference is great.
Forged steel balls are heated by direct high temperature and then forged by air hammers. After a simple heat treatment, the chromium content is 0.1% to 0.5%, carbon content is less than 1.0%, and the surface hardness after high temperature forging (HRC) can reach ≥56 or more, but due to poor material hardenability, harden layer is only about 15, so the hardness of the core is generally only 30 degrees, and the greater the diameter of the steel ball, the harder the hardenability. Therefore, forged steel balls are quenched under normal conditions.
In terms of wear resistance, the quenched and tempered high-chromium balls (HRC ≥ 60) have higher hardness and 2.5 times more wear resistance than forged steel balls. By comparison, the obvious advantages of a cast ball compared to a forged ball can be seen. According to scientific tests, the tonnage of a ton ball is more than twice that of a cast ball.
The open source wear-resisting adopts fully automated heat treatment equipment. According to the size of steel ball diameter, four temperature zones are used for high temperature heating, and chilling process and tempering treatment are used to make the high-chromium ball after heat treatment. The balance is maintained at 58-63HRC, and the hardness and toughness are kept at a very scientific value, which makes the steel ball high hardness and good wear resistance. "Guyang" brand products are deeply trusted by customers!
Smco2:17 magnet is also named Sm2Co17. Prorated with metallic samarium, cobalt, copper, iron and zirconium, are firstly those roughcasts with different properties and grades after series technology processing from melting, milling, pressing to sintering in order. The (BH)max ranges from 20 to 32 MGOe, and maximum working temperature is 350 ℃. Sm2Co17 bears a extremely low temperature coefficient and preferably anti-causticity. In high temperature condition, the magnetic properties is better than NdFeB magnets. As a result, it's widely used in fields of aeronautics and space, national defense and sensors. As a result of great brittleness of Sm2Co17 materials, it is not suitable for complex shapes and thin thickness disc or ring wall. Due to this character, there may be some appearance defects such as small chips during production, inspection and magetizing process. However, it would not change its property. We consider them as qualified product. Magnetized Smco products must be picked up carefully and gently during assemble process and kept away from ironware to avoid mutually arracting, causing chips and cracks. Sm2Co17magnet is not easy to magnetize saturated, therefore, clients must be familiar with magnetization energy of their own magnetization equipments, to the effect that appropriate grade would be chose and products of company can be fully saturated.
Sm2Co17 Magnet,Super Rare Earth Smco Magnet Sm2Co17,Permanent Disc Sm2Co17 Motor Magnet
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