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Introduction of cast iron rolls

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Introduction of cast iron rolls

  • Time of issue:2022-08-25 15:28

Introduction of cast iron rolls

  • Time of issue:2022-08-25 15:28
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Nowadays, there are still many people who do not understand some basic information about cast iron rolls, so as a manufacturer, it is necessary for us to briefly explain. In fact, this cast iron roll is widely used in the industrial and medical fields. Its It has a unique structure, high strength against external pressure, and strong impact resistance, so it is necessary for us to learn some information about it when we need it. In this way, there will be no problems during use. Here we will introduce it in detail, and follow the editor to understand it. I hope to be helpful.

The main working parts and tools on the rolling mill of cast iron rolls that cause continuous plastic deformation of metals. The roll is mainly composed of a roll body, a roll neck and a shaft head. The roll body is the middle part of the roll that is actually involved in rolling the metal. It has a smooth cylindrical or grooved surface. The roll neck is installed in the bearing, and the rolling force is transmitted to the stand through the bearing seat and the pressing device. The shaft end of the transmission end of the cast iron roll is connected with the gear seat through the connecting shaft, and the rotational torque of the motor is transmitted to the roll. The rolls can be arranged in two, three, four or more rolls in the mill stand.

Commonly used cast iron roll materials and uses, mainly the performance and quality of the roll usually depends on its chemical composition and manufacturing method, which can be evaluated by its microstructure, physical and mechanical properties, and the type of residual stress present in the roll (see roll inspection) . The use effect of a roll in a rolling mill depends not only on the roll material and its metallurgical quality, but also on the conditions of use, roll design, operation and maintenance. The use conditions of cast iron rolls of different types of rolling mills are very different, and the factors causing this difference are: rolling mill conditions. Such as rolling mill type, rolling mill and roll design, pass design, water cooling conditions and bearing type; and its rolling conditions, such as the variety, specification and deformation resistance of rolled products, reduction system and temperature system, output requirements and operation etc.; and product quality and surface quality requirements, etc.

Therefore, different types of rolling mills and the same type of rolling mills with different operating conditions have different requirements on the performance of the rolls used. For example, the rolls of billet and slab blooming mills should have good torsional and bending strength, toughness, bite, and heat resistance. Crack resistance, thermal shock resistance and wear resistance; hot-rolled strip finishing mills require the roll surface to have high hardness, indentation, wear resistance, spalling and thermal crack resistance. Only by understanding the service conditions and failure modes of cast iron rolls used in the same type of rolling mill , as well as the performance and manufacturing process of various roll materials at present, can the technical conditions of cast iron rolls used in the rolling mill be formulated, so as to select suitable and economical roll materials.

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Lianqiang metallurgical roll

Add: No. 8 Guofeng Street, Fengnan District, Tangshan City, Hebei Add: Liucheng Economic Development Zone, Chaoyang City, Liaoning Province
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