中文版 中文版  |   EnglishEnglish
搜索
Search

NEWS

/
/
/
What are the advantages of cast iron rolls? let's find out

News

What are the advantages of cast iron rolls? let's find out

  • Time of issue:2022-05-30 13:37

What are the advantages of cast iron rolls? let's find out

  • Time of issue:2022-05-30 13:37
  • Views:
Information

      What are the advantages of cast iron rolls? Let's find out.

It is understood that the common structures in cast iron rolls can be divided into three categories: matrix, cementite and graphite. The matrix structure is mainly bainite, ferrite, pearlite, bainite and martensite, and the shape of graphite in cast iron is generally flake and spherical. Roll Co., Ltd. will introduce cast iron rolls below.

  Cast iron rolls are subject to high rolling loads during work, and twists, changes and conflicts often occur between cast iron rolls. After a certain period of time, the surface needs to be polished to remove defects such as pits, roll marks, and cracks on the surface, and the fatigue layer is gradually removed while repairing the roll shape. The material of the roller is a polymer composed of iron-based solid solution and alloy carbide. At present, Cr5 rollers are widely used, and the single grinding amount is 0.2-0.3mm. If the small and medium-sized centrifugal rollers cannot be meshed at one time, the grinding amount after processing will exceed 0.1mm.

  In addition to the mechanical equipment of the grinding machine, the key media and consumables for grinding cast iron rolls are metal cutting fluid and grinding wheels. With the improvement of appearance quality, higher requirements are put forward for metal cutting fluid and grinding wheels s.metal cutting fluid demand

  Cast iron rolls have excellent chip settling, excellent cooling and cleanliness, and reduce scratches on the roll surface. Select the appropriate grinding wheel type and grinding process parameters to ensure roll shape, external vibration, transverse thread and external scratches. Does not happen during grinding Generally speaking, corundum grinding wheels are used for small and medium centrifugal rollers. Matching the corundum grinding wheel according to the material of the small and medium-sized centrifugal roller can achieve higher appearance quality and grinding accuracy. Generally, the problem of roll shape is mainly caused by the grinding wheel being too soft.

  Cast iron rolls may have defects of roll surface vibration, such as too hard grinding wheel or too high feed speed and traverse speed, which need to be solved by reducing the grinding wheel line speed, feed speed, traverse speed and roll speed. Cross threading , also known as feed form, occurs when the grinding wheel is improperly calibrated or the feed rate and traverse rate are too high. When the grinding wheel is too soft, the coolant filter fails, and there are abrasive particles floating in the coolant, there will be grinding spots on the appearance of the small and medium-sized centrifugal rollers. Check coolant filter for cast iron rolls, increase wheel speed, reduce roll speed and feed rate.The grinding wheel is too hard, the self-sharpening is poor, the passivated sand grains are not easy to fall off, and the surface of the grinding roller is easy to scratch. It is necessary to increase the speed of the grinding roller and reduce the linear speed of the grinding wheel.

If you want to know more, you can contact us. We are a manufacturer of cast iron rolls and have a detailed understanding of this aspect. It can be introduced to you from different aspects. Let everyone have a more detailed understanding.

 

There is currently no information to display
Please add data record on website background.
产品分类

Lianqiang metallurgical roll

Add: No. 8 Guofeng Street, Fengnan District, Tangshan City, Hebei Add: Liucheng Economic Development Zone, Chaoyang City, Liaoning Province
Phone:
13722533381
E-mail: sales@lianqiang.com

Domestic business contacts: Wang Lili, Xu Xiaoqian, Li Weikai
Mobile WeChat synchronization: 13333295129 19912326376 18731995853
Contact person for export business: Liu Zhuzhu
Mobile WeChat synchronization: 13832886863
Fax: 0315-8129356 8112576 0421-7021209

Lianqiang

 WeChat

Copyright ©Tangshan Lianqiang metallurgical roll Co., Ltd   冀ICP备08102597号   300.cn Tangshan

Copyright ©2021 Tangshan Lianqiang metallurgical roll Co., Ltd

冀ICP备08102597号   300.cn Tangshan