CN201002109Y

CN201002109Y - Composite wear guide roller

Info

Publication number: CN201002109Y
Application number: CNU2006200769607U
Authority: CN
Inventors: 张智
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-08-25
Filing date: 2006-08-25
Publication date: 2008-01-09
Anticipated expiration: 2016-08-25

Abstract

The utility model discloses a combined wearable guiding roll, which comprises a guiding roll body (1), a guiding roll inside ring (2) positioned on the guiding roll body (1). The guiding roll body (1) and the guiding roll inside ring (2) are with same axes, which assort with a scroll body (3) inside roll table to make up a self-rotation body structure. A thermoplastic super hard material multiple layer (4) is covered on the work face of the guiding roll body (1). The utility model has the advantages of long usage life, convenient for installation and others, which can be applied in metallurgy steel rolling equipments widely to exert rolling mill potential, improve the work efficiency and reduce the production cost.

Description

A kind of complex abrasion-proof deflector roll

Technical field

The utility model relates to guide and guard, the deflector roll, particularly high abrasion that uses on a kind of metallurgical steel rolling equipment, long-life complex abrasion-proof deflector roll.

Background technology

The guide and guard of using on high-speed line, the bar mill, deflector roll are because work under bad environment, temperature height (900 ℃～1230 ℃), speed height (25000 rev/mins～30000 rev/mins), quick abrasion, and single groove life only is about 400 tons.Therefore per 3～4 hours of rolling line will shutdown inspection and is changed deflector roll, and class Three will shut down and check for 5～6 times and change every day, and influence was produced nearly 2 hours, the raising of restriction production line production capacity.

What generally use on the present metallurgical steel rolling equipment is hot investment casting wear-resisting alloy steel deflector roll, generally adopts precision casting process production, need join two bearings in addition in use, the middle air bound ring that refuels.In the use usually because damage of bearings or deflector roll wearing and tearing and shut down often and change, about 400 tons of single life-span, reusable through reconditioning, from full-size to scrapping size, reusable 3～5 times, about 1600 tons of life-span.And each dismounting will be changed 2 bearings, and a deflector roll is scrapped from using, and consume 10 multiple bearings, and cost is very high.The assembler also will dismantle, cleans and assemble, and work intensity is very big.

Summary of the invention

The purpose of this utility model is exactly the deficiency that exists at prior art and a kind of long service life, complex abrasion-proof deflector roll easy to assembly are provided, and it can be given full play to milling equipment potential, increases work efficiency, reduce production costs.

For achieving the above object, a kind of complex abrasion-proof deflector roll of the utility model by the following technical solutions:

A kind of complex abrasion-proof deflector roll of the utility model is to be made of deflector roll matrix, the deflector roll inner ring that is loaded in the deflector roll matrix, and deflector roll matrix and deflector roll inner ring are same axis, and the two matches by the rolling element in the roller-way and constitutes from swivel structure; On the working face of described deflector roll matrix, thermosol covers the ultra-hard abrasive material composite bed, forms the composite superhard material working lining.

Described rolling element is a ceramic material, with Si ₃N ₄The Ceramic Balls ball is advisable.

Described ultra-hard abrasive material can be in alloy ceramic, nano ceramics alloy material or the Hardmetal materials a kind of.

The composite superhard material working lining can be difform working linings such as flat pattern, arc, V-type and spill.

Described deflector roll inner ring is equivalent to bearing inner race, usually and the deflector roll bearing pin be used, in the oil gas through hole is arranged.

Be provided with dust ring between the deflector roll matrix outside rolling element and the gap of deflector roll inner ring.

After a kind of complex abrasion-proof deflector roll of the utility model adopts technique scheme, have the following advantages:

Deflector roll is from swivel structure, and promptly deflector roll does not need to join in addition bearing, because the utility model is a ceramic material from the rolling element that swivel structure adopts, and rolling element do not have retainer, and is not fragile so this structure can be born top load, long service life, good stability.Si ₃N ₄The density of pottery is 3.20g/m ³, than bearing steel 7.85g/cm ³Density much lower, and intensity is more much higher than bearing steel, it is the strong covalent bond structure simultaneously, does not have affinity interaction with iron and steel.So the rolling physical efficiency of ceramic material effectively suppresses the centrifugal force that high speed rotating produces, reduce the wearing and tearing between rolling element and the roller surface, even the situation of oil gas deficiency occurs, also can turn round for a long time, not easy burn-out.

The working surface of deflector roll is a ultra-hard abrasive material, superpower wear-resistant.On the utility model working face, cover by thermosol, with nano ceramics or the molten working surface that overlays on deflector roll of other alloy abrasion resistance material, because this layer pottery or alloy abrasion resistance material are the strong covalent bond structures, high temperature resistant and do not have affinity interaction with stocking, can significantly improve the hardness and the wearability of deflector roll working surface, also help the improvement of the plasticity and the toughness of deflector roll working surface.The surface treated deflector roll life-span can be improved 3～5 times.Traditional deflector roll can only roll about 400 tons usually will reconditioning, and the utility model complex abrasion-proof deflector roll can rolling about 1600 tons just reconditionings, can save a large amount of roll changing times, alleviate working strength of workers, improve the quality and the output of stocking.

Because the ultra-hard abrasive material of working surface is that thermosol is covered with, after the wearing and tearing, carry out thermosol once more through processing and cover, reusable, just scrap until the rotation rolling element structural failure of deflector roll.The deflector roll that uses on the high-speed rod-rolling mill finishing mill is because rotating speed high (about 2～30,000 rev/mins) reusable generally speaking 3～5 times, amounts to about 6400 tons of steel-passing amount.

Therefore, a kind of complex abrasion-proof deflector roll of the utility model is the optimal selection that is used on high-speed line, the bar mill, not only improve milling train efficient greatly, reduce ton steel cost, this structure assembling is simple simultaneously, do not need to join bearing in addition, alleviate assembly crewman's labour intensity, saved the expense of a large amount of imported bearings.

A kind of complex abrasion-proof deflector roll of the utility model had both solved the problem that the deflector roll life-span is short, Bearing Consumption is big commonly used at present, had reduced ton steel cost, had improved output and quality, had also solved pure pottery or carbide alloy deflector roll cost height, a frangible difficult problem simultaneously.

A kind of complex abrasion-proof deflector roll of the utility model adopts from swivel structure, is once innovation completely of normal consumption spare part on the metallurgical steel rolling equipment, is the important behave of performance equipment potential.

Description of drawings

Fig. 1 is a kind of complex abrasion-proof deflector roll of the utility model structural representation.

Fig. 2 is common steel alloy deflector roll structural representation;

The specific embodiment

For further describing the utility model, a kind of complex abrasion-proof deflector roll of the utility model is described further below in conjunction with drawings and Examples.

Find out by a kind of complex abrasion-proof deflector roll of the utility model shown in Figure 1 structural representation, a kind of complex abrasion-proof deflector roll of the utility model is to be made of deflector roll matrix 1, the deflector roll inner ring 2 that is loaded in the deflector roll matrix 1, deflector roll matrix 1 is same axis with deflector roll inner ring 2, and the two matches by the rolling element in the roller-way 3 and constitutes from swivel structure; Rolling element 3 adopts the Ceramic Balls ball.On the working face of deflector roll matrix 1, thermosol covers ultra-hard abrasive material composite bed 4, forms the composite superhard material working lining.Described ultra-hard abrasive material can be in alloy ceramic, nano ceramics alloy material or the Hardmetal materials a kind of.The composite superhard material working lining can be difform working linings such as flat pattern, arc, V-type and spill, is arc among Fig. 1.Deflector roll inner ring 2 is equivalent to bearing inner race, in oil gas through hole 5 is arranged.Between the gap of the deflector roll matrix 1 in rolling element 3 outsides and deflector roll inner ring 2, be provided with dust ring 6, prevent that foreign matter such as iron scale from entering in the deflector roll rolling element protection deflector roll rolling element and raceway.

By the common steel alloy deflector roll structural representation that generally uses at present shown in Figure 2 as can be seen, at the two ends of deflector roll 7 endoporus, bearing 8,9 is housed respectively, the middle air bound ring 10 that refuels is usually shut down often and is changed because of damage of bearings or deflector roll wearing and tearing in the use.

Claims

1. complex abrasion-proof deflector roll, it is characterized in that: it is by deflector roll matrix (1), is loaded on deflector roll inner ring (2) formation in the deflector roll matrix (1), deflector roll matrix (1) is same axis with deflector roll inner ring (2), and the two matches by the rolling element (3) in the roller-way and constitutes from swivel structure; On the working face of described deflector roll matrix (1), thermosol covers ultra-hard abrasive material composite bed (4).

2. a kind of complex abrasion-proof deflector roll as claimed in claim 1 is characterized in that: described rolling element is the Ceramic Balls ball.

3. a kind of complex abrasion-proof deflector roll as claimed in claim 2 is characterized in that: described Ceramic Balls ball is Si ₃N ₄The Ceramic Balls ball.

4. as claim 1,2 or 3 described a kind of complex abrasion-proof deflector rolls, it is characterized in that: the material of described ultra-hard abrasive material composite bed (4) is a kind of in alloy ceramic, nano ceramics alloy material or the Hardmetal materials.

5. as claim 1,2 or 3 described a kind of complex abrasion-proof deflector rolls, it is characterized in that: oil gas through hole (5) is arranged in the described deflector roll inner ring, be provided with dust ring (6) between the deflector roll matrix (1) outside rolling element (3) and the gap of deflector roll inner ring (2).