Surface damage of roll hot rolling

The roll is a production tool for plastic deformation of the metal. It is subject to a complex stress state during production, and it is prone to roll failure, such as peeling, fracture, and roll surface damage. Among the roll failure forms, there are many types of roll surface damage, which are also common failure […]

What types of cast iron rolls are there?

1) alloy chilled cast iron roll Alloy chilled cast iron rolls use the supercooling degree of molten iron itself and the method of chilling the cold surface to form a white layer. There is basically no free graphite in the matrix structure of the working layer of the roll body, and the metallographic structure is […]

Graphite steel roll

Graphite steel roll is based on the material of semi-steel roll, by controlling the content and corresponding proportion of graphitization elements and carbide forming elements, adding an appropriate amount of inoculant alloy and nodulizer to the molten steel for inoculation and spheroidization, so that the roll Spherical or agglomerated graphite is formed during solidification, specifically […]

Backup Roll

The essence of the backup roll is to support the work roll, and the work roll can reduce the diameter of the work roll and increase the rigidity of the work roll through the contact of the work roll. The backup roll is an important part of the rolling mill, used to support the work […]

Safety Operation Rules For Replacing Backup Roll

1. Before changing the backup roll, the power supply of the host machine and all the surrounding auxiliary rotating equipment must be cut off, and the master command should be operated to return to the zero position. It is strictly forbidden to stand on the roller table and push the bed without the power off. […]

The main characteristics of steel rolling

The pressing process of changing the shape of the ingot between the rotating rolls and the shape of the billet is called steel rolling. The purpose of rolling steel is the same as other pressure processing. On the one hand, it is to obtain the required shape, such as steel plate, strip steel, wire rod, […]

The difference and use description of H-beam and I-beam

1. Whether the I-beam is ordinary or light because the section size is relatively high and narrow, the moment of inertia of the two main axes of the section is quite different. Therefore, it can generally only be used directly on its web plane. Internally flexed members or composed of lattice-type stressed members. It is […]

Adamite Rolls Chemical Composition

Adamite rolls usually have a carbon content of 1.5% to 2.3%, and contain various alloying elements such as Cr, Ni, Mo, and V. Generally, the free carbide content is about 6% to 10%, which has the advantages of small hardness drop and wear resistance. High performance, good toughness, significantly reduced consumption, and significantly improved surface […]

Performance Of High Speed Steel Rolls

High-carbon high-speed steel roll (referred to as high-speed steel roll) is the hot roll material with the shortest time, the fastest development, and the widest application prospect. High-speed steel is also known as wind steel or front steel, which means that it can harden even when cooled in the air when quenched, and it is […]

What kinds of wire rods are there?

1. The variety of wire rods can generally be divided into the following categories according to the steel type: 1). Wire rod for flexible wire. The main carbon structural steel Q195, Q215, and Q235, ordinary low-carbon steel, is divided into construction wire rod and wire drawing and high-quality carbon structural steel No. 10, No. 15, […]