Hot charging thick-wall combination roller with bimetal roll cover

Abstract

The invention discloses a hot charging thick-wall combination roller with a bimetal roll cover, belonging to the technical filed of metallurgical machinery, and comprising pot heads, compression rings, a roll sleeve and a core shaft. The combination roller is characterized in that the roll sleeve (3) and the pot head (1) are assembled on the core shaft (4) in an interference manner after being heated to expand, the joint of the pot head (1) and the roll sleeve (3) is processed to the same size and simultaneously is interference connection with a compression ring (2); and the thickness of the roll sleeve 3 is as follows: phi D is the diameter of the roller body, and phi d is the diameter of the roller neck. The roll sleeve (3) is bimetal, the outer layer of which is made from a high alloy abrasion-proof material and the inner layer is made from a high ductile material; the number of the pot head (1) and the number of the compression ring (2) are both two; the compression ring (2) is made from a high strength alloy steel; and the combination roller has the advantages that the service life can be improved for several times, the roller can be changed from large to small for multi-time use after being used, after scraping, the noble alloy can be recovered totally, thereby saving energy, reducing energy consumption, and having obvious effects on lowering cost and increasing effectiveness.

Description

technical field [0001] The invention belongs to the technical field of metallurgical machinery, and in particular provides a hot-packed thick-walled double-metal roll sleeve combined roll, which is suitable for ferrous metal and non-ferrous metal rolling mills. Background technique [0002] The roll is the key component and the largest consumption part in the rolling process of metal materials. Most of the currently used rolls are integral rolls. Among them, the centrifugal casting nickel-chromium-molybdenum infinite chilled composite roll invented in the United States in the 1930s is known as a milestone in the history of roll development and still occupies a dominant position. Ring rolls or nested rolls are mainly used in the production of high-end wires, bar finishing mills, and pipes. [0003] The main defects of integral rolls are: [0004] ① Serious waste of metal materials, high energy consumption, and heavy pollution; the weight of the effective working layer of th...

AI Technical Summary

Problems solved by technology

[0004] ① Serious waste of metal materials, high energy consumption, and heavy pollution; the weight of the effective working layer of the roll is about 15% of the total weight of the roll, and they are all scrapped after use. It is difficult to separate and recycle precious alloys, and casting is an industry with high energy consumption and high pollution. ;

[0005] ②Long production cycle and low production efficiency;

[0006] ③The service life of the product is low and the consumption is large

[0008] ①Narrow application area; mainly used in rolling mills with small rolling force and shallow roll grooves;

[0009] ②The roller cover is thin, easy to break during use, and has low safety;

[0010] ③ Some products have complex structures

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