Cable tray equipment roller is an important part of the cable tray equipment. What are the characteristics of the design and use of the cable tray equipment roller? The design and use of the cable tray equipment roller has the following characteristics.
The principle of the average force of each pass makes the average force of the rolls of the whole line balanced and prolongs the service life of the rolls. The circular arc of the track is the core part of the slide rail. The circular arc after the previous press-in shall be effectively protected by the upper and lower rollers or horizontal wheels during the next rolling and edging.
The arc position of the cable bridge equipment material will definitely change during the stretching process, R will become a triangle, the steel ball will not reach the bottom, and the two-point contact will produce noise. When R becomes larger, the matching rail will shake, the track of the slide rail will be blurred, the force will be uneven, the slide rail will be deformed, and the service life will be shortened. The machining accuracy of the roller is the key. Therefore, a special tool has been specially made under the projection equipment, which will be magnified 20 times for testing.
The carbon content of the cast iron roll is about 2.5-3.5%. According to the main materials can be divided into four categories: ordinary cast iron roll, high nickel chromium infinite chilled composite cast iron roll, high chromium composite cast iron roll and alloy ductile iron roll. The common organization of cast iron rolls can be divided into three categories: matrix, cementite and graphite. The matrix structure is mainly composed of bainite, ferrite, pearlite, bainite and martensite. Graphite in cast iron generally comes in two forms: flakes and spheres.
Ordinary cast iron rolls can be divided into chilled cast iron rolls, medium and low alloy infinite chilled cast iron rolls and medium and low alloy ductile iron rolls. Chilled cast iron is a kind of cast iron obtained by overcooling of molten iron and quenching of mold surface. The surface of roller body is cooled to form a white layer with high hardness and good wear resistance. Chilled cast iron rolls can be divided into non-ductile iron, ductile iron composite materials and ball cores according to the manufacturing process and core materials. Infinite chilled cast iron roll is a material between chilled cast iron and gray cast iron. There is graphite in the matrix structure of the working layer of the roll body, and there is no obvious dividing line between the working layer of the roll body and the core. A rubber roller is such a low end roller. Ordinary cast iron rolls are mainly used for rolling sheet rolling mills, three-roll rolling mills, medium plate rolling mills, wire rod rolling mills, bar rolling mills and profile rolling mills.
Infinite chilled cast iron is a material between chilled cast iron and gray cast iron. The matrix structure of the working layer of the infinite chilled cast iron roll has a uniform distribution of graphite. The graphite content increases with the increase of the depth from the surface to the inside of the roller body, and the hardness decreases accordingly. Therefore, there is no obvious dividing line between the working layer of the roll and the roll core, which is also called high chromium nickel molybdenum alloy element infinite chilled cast iron roll material. There are a large number of carbides in the matrix structure of the working layer of the high-Ni-Cr infinite chilled cast iron roll body, so it has high wear resistance. The presence of graphite in the matrix structure makes it have good heat resistance and heat resistance, and is widely used as a finishing roll for wide, medium and heavy plate mills and strip mills.