硬质合金轧辊是在硬质合金刀具的基础上发展而来的，sleeper谁家好，硬质合金是采用坚硬的碳化钨颗粒硬质相与镍、钴等黏结相金属烧结而成。硬质合金的性能取决于碳化钨颗粒尺寸的大小和黏结相金属含量的多少，当黏结相金属中含有一定量的镍和铬时，sleeper哪家好，不仅会大大提高轧辊的抗热疲劳性能。
Cemented carbide rolls are developed on the basis of cemented carbide tools. Cemented carbide is made of hard tungsten carbide particles and hard phase sintered together with nickel and cobalt bonded phases. The properties of cemented carbide depend on the size of tungsten carbide particle and the content of bonding phase metal. When the amount of nickel and chromium in the bonding phase contains metal， it will not only greatly improve the thermal fatigue resistance of the roller.
轧辊按材质主要分为哪几种类别？
轧辊按制造材料主要划分为铸钢系列轧辊、铸铁系列轧辊和锻造系列轧辊三大类别。
What are the main categories of the roll according to the material?
Rolls are mainly divided into three categories: cast steel series rolls， cast iron series rollers and forging series rolls.
实践表明，带双镀槽的轴头在使用过程中，沈阳sleeper，镶槽壁容易崩裂，目前常用易加工的带平台的袖头代替双因槽的抽头。
直径超过400mm的冷轧轧辊，在锻造后，多半在中心馒一个670一250mm的通7L。这样，一力面可以使轧辊经热处理店的内应力分朽均勾；另一方面在轧辊表面淬火时，可对轧辊通水冷却，提高淬火效果。
Practice shows that， with double bath head is in use， insert groove wall is easy to crack，sleeper价格， at present common processing platform with the cuff instead of double slot for tap.
Cold roll diameter of more than 400mm， after forging， mostly in the 7L center. A 670 250mm. So， on one hand can make the roller stress heat treatment shop allocation hook are; on the other hand， the roll surface quenching， the water cooling roller， improve the quenching effect.
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