CN2587541Y - Combined roller - Google Patents

Abstract

The utility model belongs to a part rolling mill roll of rolling mill, in particular to a combined roll. The roll is composed of a roll neck, a roll body and a roll sleeve, and is characterized in that: the outer diameter of the roller body is smaller than the diameter of the roller body close to a scrapped roller, and a roller sleeve made of wear-resistant alloy steel is embedded in the outer portion of the roller body in an interference fit mode. The utility model discloses the combination roll not only can improve the life of roll like this because the roller shell of inlaying on the shaft is adopted wear-resisting alloy steel material to make, and the roller shell can be changed moreover, just so great reduction the manufacturing cost of roll.

Description

Combined roll

technical field

The utility model belongs to rolling mill rolls which are parts of rolling mills, in particular to a combined roll.

Background technique

The rolls of the rolling mill are divided into two types: work rolls and back-up rolls, which are vulnerable parts on the rolling mill. At present, the rolls on domestic rolling mills are mainly in the form of a solid whole consisting of a roll body and a roll neck. The roll body is made of alloy steel, high-alloy steel and other materials, which are made by forging, machining, heat treatment, and fine grinding. There are problems of high material consumption, large waste, large processing volume and high manufacturing cost. Due to the high-speed rotation of the roll during work, the load of hundreds of tons accelerates the wear of the roll body and affects the service life. In addition, impurities such as hard iron and phosphorus intrude into the working surface of the roll body to accelerate wear and cause local damage, which will also cause the entire roll to be scrapped, which is expensive. The combined cold-formed profile roll disclosed in Chinese patent 01232525.2 after retrieval is used on a cold-formed profile rolling mill. The section and the tracking force section, the pressure section is made of alloy steel, the holding force section and the tracking force section are made of high-strength cast iron. The middle section of the roller body is disc-shaped, with holes and keyways for coupling with the transmission shaft, and the two ends are bowl-shaped with shaft holes in the center; the middle section and the interior of both ends form a cavity between the two adjacent sections with round holes and rings The platform matches the positioning.

Contents of the invention

The purpose of this utility model is to solve the problems existing in the rolls of the above-mentioned solid integral rolling mill, and to provide a combination roll of the rolling mill with low production cost and long service life.

Brief description of the content of the combined roll of the utility model:

The combined roll of the utility model is composed of a roll neck, a roll body and a roll sleeve. The roller cover is made of wear-resistant alloy steel material.

The combined roll of the utility model is made of wear-resistant alloy steel material because the roll cover inlaid on the roll body can not only improve the service life of the roll, but also because of its good processing technology and easy replacement of the roll cover, it can greatly reduce The manufacturing cost and operating cost of the roll are reduced.

Description of drawings

Figure 1 is a schematic diagram of the combined roll structure

Among Fig. 1: 1 is a roll neck, 2 is a roll body, and 3 is a roll sleeve.

Detailed ways

The combined roll of the utility model is realized in this way, see Fig. 1, is made up of roll neck 1, roll body 2, roll sleeve 3, is characterized in that: the outer diameter of roll body 2 is smaller than the roll of the roll that is close to being scrapped Body diameter size, a roller sleeve 3 made of wear-resistant alloy steel material is inlaid in its outer interference fit.

Claims (1)

1, a kind of assembly roller, form by roll neck, the body of roll, roller shell, it is characterized in that: the outside dimension of the body of roll is less than the barrel diameter size near the roll of scrapping, and inlays a roller shell that adopts the wear-resisting alloy steel material to make in the outside interference fit of the body of roll.