CN201524696U - Thick-wall double-metal-roll-sleeve combined roller - Google Patents

Abstract

A thick-wall double-metal-roll-sleeve combined roller belongs to the field of metallurgical machinery and comprises a bearing supporting ring, a press ring, a roller sleeve and a mandrel. After being heated, the bearing supporting ring (1) and the roller sleeve (3) are in interference fit with the mandrel (4), outer diameters of connection positions of the bearing supporting ring (1) and the roller sleeve (3) are processed to the same size, simultaneously, the bearing supporting ring (1) is in interference connection with the press ring (2), the thickness of the roller sleeve (3) is phi D which is the diameter of the body of the roller, and phi d is the diameter of the neck of the roller. The thick-wall double-metal-roll-sleeve combined roller is stable in structure, resolves problems that the roller sleeve is easy to be broken during usage of the roller sleeve and the roller and expands usage range of the roller sleeve and the roller. In addition, compared with an integral roller, the service life of the roller can be doubled, the size of the roller can be changed to be reused after finishing use, after the roller is scraped, precious metal can be totally recovered, and the inner layer of the roller utilizes high-toughness materials such as seamless steel pipes and the like so as to guarantee safety during a usage process. In addition, the combined roller saves energy, reduces emission and is obvious in cost reducing and efficiency increasing effect.

Description

Thick-wall combination roller with bimetal roll cover

Technical field

The utility model belongs to technical field of metallurgical machinery, and a kind of thick-wall combination roller with bimetal roll cover particularly is provided, and is applicable to ferrous metal and nonferrous metal rolling mill.

Background technology

Roll is key components and parts and the maximum consumption part in the metal material operation of rolling.The roll overwhelming majority of using at present is solid roll, and wherein the centrifugal casting nickel chromium triangle molybdenum indefinite chill composite roll invented the thirties in 20th century of the U.S. is known as the milestone on the roll development history, so far dominate still.Ring roller or edge cover roll are mainly used in the productions such as high line, finishing bar mill group, tubing.

The major defect of solid roll is:

1. the metal material waste is serious, and energy consumption is big, pollutes heavy; The effective working lining weight of roll is about about 15% of roll gross weight, all scraps after finishing using, and valuable alloy is difficult to separate recovery, and casting is high energy consumption, high pollution industry;

2. the production cycle long, production efficiency is low;

3. product is low service life, consumes big.

Existing ring roller and the major defect of inlaying the cover roll:

1. application surface is narrow; On the milling train that be mainly used in that roll-force is little, the roll fluting is shallow;

2. roller shell is thin, breaks easily in the use, and security is low;

3. portioned product complex structure.

Summary of the invention

The purpose of this utility model is a kind of thick-wall combination roller with bimetal roll cover, solved the crackly problem of roller shell in the use of thin-walled roller shell roll, the reliability height, can be widely used in the middle of the overall process production of various metal materials such as plate, band, type, rod, substitute solid roll comprehensively, it is simple to possess processing simultaneously, easy accessibility, and advantage such as reusable edible.

Technical solutions of the utility model comprise bearings ring, pressure ring, roller shell and mandrel as shown in Figure 1; With bearings ring, roller shell heating back and mandrel interference fit, bearings ring and roller shell junction external diameter are worked into same size, keep interference fit joint with pressure ring simultaneously; The thickness of roller shell is $\frac{\mathrm{\&Phi;D}-\mathrm{\&Phi;<figure-callout\; id="2"\; label="d"\; filenames="H2009202471140E00011.png"\; state="\{\{state\}\}">d</figure-callout>}}{2}~\frac{\mathrm{\&Phi;D}-\frac{\mathrm{\&Phi;<figure-callout\; id="2"\; label="d"\; filenames="H2009202471140E00011.png"\; state="\{\{state\}\}">d</figure-callout>}}{2}}{2},$ Φ D is the roll barrel diameter, and Φ d is the roller neck diameter.

Roller shell is a bimetallic, the outer high alloy high-abrasive material that adopts, and internal layer adopts the high tenacity material, and high strength mandrel, bearings ring, pressure ring adopt high strength alloy steel, and all component is heat-treated according to material that is adopted and corresponding heat treatment standard; Bearings ring, pressure ring are 2.

Roller shell and mandrel are pressed H7/p6 interference assembling, and bearings ring and mandrel are pressed H7/u6 interference assembling, make it guarantee to transmit moment of torsion.

After roller shell end face step and bearings ring end face are assembled to mandrel, be worked into same size simultaneously, simultaneously with the heavy interference fit of pressure ring.

Interference fit between roller shell, bearings ring and the mandrel can be dismantled by induction heating method, and the interference fit between pressure ring and heavy wall bimetallic roller shell, the end cover can be by turning or induction heating mode dismounting.

The utility model Stability Analysis of Structures, compare with solid roll, end cover, mandrel can use repeatedly, the outer high alloy material that adopts of roller shell, in conjunction with Technology for Heating Processing, can significantly improve service life, can change little repeatedly use after finishing using greatly, scrapping the valuable alloy in back can all reclaim, and energy-saving and cost-reducing, the cost efficiency effect is remarkable.

The utility model is compared with existing various roller shell rolls has following advantage:

1. increase wall thickness of roll shell, thereby significantly improved the security in the roller shell use, solved the problem that roller shell breaks in the use;

2. widened the application surface of roller shell roll, not only be extensive use of, also can be applicable to rolls such as bar rolls in thick, section bar, strip simultaneously in the finishing bar mill group;

3. product structure is simple, and mounting or dismounting are convenient;

4. most of parts can be recycled, and energy conservation and consumption reduction effects is remarkable.

Description of drawings

Be described further below in conjunction with accompanying drawing and embodiment:

Fig. 1 is a thick-wall combination roller with bimetal roll cover structural representation of the present invention.Wherein, bearings ring 1, pressure ring 2, roller shell 3, mandrel 4.

Fig. 2 is a thick-wall combination roller with bimetal roll cover profile schematic diagram of the present invention.

Fig. 3 is applied to the assembly roller structural representation of angle steel for the present invention.

The specific embodiment

Technical solutions of the utility model comprise bearings ring 1, pressure ring 2, roller shell 3 and mandrel 4 as shown in Figure 1; It is characterized in that: with bearings ring 1, roller shell 3 heating backs and mandrel 4 interference fit, bearings ring 1 is worked into same size with roller shell 3 junctions, keeps interference fit joint with pressure ring 2 simultaneously; The thickness of roller shell 3 is $\frac{\mathrm{\&Phi;D}-\mathrm{\&Phi;<figure-callout\; id="2"\; label="d"\; filenames="H2009202471140E00011.png"\; state="\{\{state\}\}">d</figure-callout>}}{2}~\frac{\mathrm{\&Phi;D}-\frac{\mathrm{\&Phi;<figure-callout\; id="2"\; label="d"\; filenames="H2009202471140E00011.png"\; state="\{\{state\}\}">d</figure-callout>}}{2}}{2},$ Φ D is the roll barrel diameter, and Φ d is the roller neck diameter.

Embodiment 1: finishing bar mill group assembly roller

Be illustrated in figure 1 as finishing bar mill group roll, the heavy wall bimetallic roller shell 3 outer high-boron high-speed steel materials that adopt, internal layer is a seamless steel pipe, mandrel 4 adopts 40Cr, bearings ring 1, pressure ring 2 adopt 42CrMo, interference fit between bimetallic heavy wall roller shell 3 and the high strength mandrel 4 is got tolerance H7/P6, and the interference fit between bearings ring 1 and the mandrel 4 is got tolerance H7/v6, and the interference fit between pressure ring 2 and bearings ring 1 and the heavy wall roller shell 3 is got tolerance H7/v6.

Safe and reliable in this thick-wall combination roller with bimetal roll cover use, improve 3 times than former with solid roll service life.

Embodiment 2: the angle steel assembly roller

Be illustrated in figure 3 as steel profile factory angle steel roll, the heavy wall roller shell 3 outer boron-containing high-chromium cast irons that adopt, mandrel 4 adopts 40Cr, bearings ring 1, pressure ring 2 adopt 42CrMo, interference fit between bimetallic heavy wall roller shell 3 and the high strength mandrel 4 is got tolerance H7/P6, interference fit between bearings ring 1 and the mandrel 4 is got tolerance H7/v6, and the interference fit between pressure ring 2 and bearings ring 1 and the heavy wall roller shell 3 is got tolerance H7/v6.

Safe and reliable in this thick-wall combination roller with bimetal roll cover use, improve 2 times than former with solid roll service life.

Claims (4)

1. a thick-wall combination roller with bimetal roll cover comprises bearings ring, pressure ring, roller shell and mandrel; It is characterized in that: with bearings ring (1), roller shell (3) heating back and mandrel (4) interference fit, bearings ring (1) is worked into same size with roller shell (3) junction external diameter, keeps interference fit joint with pressure ring (2) simultaneously; The thickness of roller shell (3) is

Ф D is the roll barrel diameter, and Ф d is the roller neck diameter.

2. assembly roller according to claim 1 is characterized in that: roller shell (3) is a bimetallic, the outer high alloy high-abrasive material that adopts, and internal layer adopts the high tenacity material, and high strength mandrel (4), bearings ring (1), pressure ring (2) adopt high strength alloy steel; Bearings ring (1), pressure ring (2) are 2.

3. assembly roller according to claim 1 is characterized in that: roller shell 3 is pressed H7/p6 interference assembling with mandrel 4, and bearings ring 1 is pressed H7/u6 interference assembling with mandrel (4).

4. assembly roller according to claim 1 is characterized in that: after roller shell (3) end face step and bearings ring (1) end face are assembled to mandrel (4), be worked into same size simultaneously, simultaneously with pressure ring (2) interference fit.

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