CN102259114A

CN102259114A - Method for manufacturing bionic high-wear-resistance long-service-life easy-to-repair novel composite roller

Info

Publication number: CN102259114A
Application number: CN2011100817748A
Authority: CN
Inventors: 周明; 刘长隆
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-04-01
Filing date: 2011-04-01
Publication date: 2011-11-30

Abstract

The invention provides a method for manufacturing a bionic high-wear-resistance long-service-life easy-to-repair novel composite roller, which manufactures the roller through the composite gradient design from the inside to the outside of a roller material. The method is characterized in that: the high-wear-resistance long-service-life easy-to-repair novel composite roller comprises from the inside to the outside a roller core, a transitional layer and a working layer, wherein the roller core is made of conventional material such as spheroidal graphite cast iron, carbon steel and low-alloy steel; the working layer is made of high-harness and high-wear-resistance materials such as tungsten cobalt hard alloy, tungsten titanium hard alloy and high chromium iron; and the physical properties of the material of the transitional layer are between those of the material of the roller core and the material or the working layer. When the method is used, the wear resistance in the roller is improved, and the service life of the roller is prolonged; and, the utilization rate of materials is improved considerably and the production cost is reduced.

Description

The NEW TYPE OF COMPOSITE roll manufacture method that a kind of bionical high abrasion long-life should repair

Technical field

The present invention relates to the manufacturing field of roll, particularly the NEW TYPE OF COMPOSITE roll manufacture method that should repair based on a kind of bionical high abrasion long-life of setting up on the bionics basis.

Background technology

Roll is the important tool that makes the moulding deformation of rolled metal material production, and the pressure that produces when utilizing a pair of or one group of roll rolling rolls the various metal materials of backing material makes it produce plastic deformation.It will bear the sound load when rolling in the operation of rolling, wearing and tearing and influence of temperature variation, therefore roll in use will constantly be worn, conventional restorative procedure just adopts the mode correction roll shape of turning or grinding, in case and the size of roll is worn down to the stage that can not repair, whole roll just will be scrapped, and cause the huge waste of material.Therefore play a decisive role in the wearability and the service life of the material breaker roll of roll.In recent years, though the leap from the semi-high speed steel to the carbide alloy has been experienced from single cast iron, spheroidal graphite cast-iron to rich chromium cast iron in the development of the material of roll.Though the improvement by material has improved the wearability and the service life of having improved roll to a certain extent, but its service life is still shorter, and while in case after the inefficacy of wearing and tearing back, repair very difficulty, though the surperficial heating quenching of present numerous technology such as roll, laser quenching, laser melting, laser melting coating etc. can breaker roll working lining repair, but because the influence of problems such as crackle, the thickness of repairing limited (0.1-2mm) is difficult to make roll to recover original pattern.Therefore the roll working life after repairing is very limited, has caused the waste of huge material.Therefore how to design the roll that a kind of high abrasion long-life should repair is the manufacturing significant problem that faces of roll always.

Bionic Design is that the principle of mimic biology system is come the constructing technology system or made artificial technological system have or be similar to the feature of biosystem.Various structures in the biosystem all are the selections through the Nature, have experienced millions upon millions of evolution and have got, and have this best structural design.As various clam shells, all there are unusual wearability and hardness in turtle shell and tooth or the like biological tissue.Though there are unsurpassed wearability and hardness in these biological tissues, its structure all is not to be single.With the tooth is example, and just the most surperficial enamel is adamantine, and the dentine of its internal layer and cementum all are very soft.But these materials do not influence the hardness and wear resistance of tooth integral body.This is a kind of optimized structural design of selecting through the Nature.And effective operation material equally also only is its outmost one deck in roll, and from this point, tooth is consistent with roll.Therefore by using for reference clam shell, the biological nature of turtle shell and tooth etc., breaker roll carries out Bionic Design, and the wearability with the roll of further raising increases service life, reduces to repair difficulty and have economic benefit and social benefit very widely.

Summary of the invention

Shortcoming at the above-mentioned background technology, the invention provides the NEW TYPE OF COMPOSITE roll manufacture method that 1. 1 kinds of bionical high abrasion long-lives should repair, solved working lining alloy segregation that conventional roll exists with thick difference greatly up and down, grain structure is thick and centrifugal casting process in the pore, crackle and the interface that produce combine problems such as bad.

To achieve these goals, the invention provides following technical scheme:

The NEW TYPE OF COMPOSITE roll manufacture method that a kind of bionical high abrasion long-life should repair, get by the complex gradient design from inside to outside of breaker roll material, described high abrasion long-life high-performance composite roll comprises roller core, transition zone and working lining from inside to outside, described roller core is to be made of materials such as the magnesium iron of routine, carbon steel or low alloy steels, described working lining then has the material formation of high rigidity and high-wearing feature as W-Co kind carbide alloy, kennametal or high ferrochrome etc., the physical property of buffer layer material is between roller core material and working layer.

As preferred version of the present invention, described transition zone can be made of multilayer, and it can be the composite that is made of roller core material and working layer, also can be the composite that adds other functional materials.

As preferred version of the present invention, described transition zone is divided into first transition zone and second transition zone, and transition zone itself is taked the gradient design.

The beneficial effect that the present invention brings is:

1, by on the base material of roll, progressively introducing the functional material of high-hardness, wearable as working layer;

2, realized the perfect adaptation of the working layer of roll base material and introducing by material composition gradient design from inside to outside;

3, solved working lining alloy segregation that traditional roll exists with thick difference greatly up and down, grain structure is thick and centrifugal casting process in the pore, crackle and the interface that produce combine problems such as bad

Description of drawings

Fig. 1 is the structural representation of described roll of the present invention

1-roller core 2-first transition zone

The 3-second transition zone 4-working lining

The specific embodiment

Below in conjunction with accompanying drawing preferred embodiment of the present invention is described in detail, thereby protection scope of the present invention is made more explicit defining so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that.

The NEW TYPE OF COMPOSITE roll manufacture method that a kind of bionical high abrasion long-life as shown in Figure 1 should repair, get by the complex gradient design from inside to outside of breaker roll material, it is characterized in that, described high abrasion long-life high-performance composite roll comprises roller core from inside to outside, transition zone and working lining, described roller core is the magnesium iron by routine, materials such as carbon steel or low alloy steel constitute, described working lining is then as the W-Co kind carbide alloy, the material that kennametal or high ferrochrome etc. have high rigidity and high-wearing feature constitutes, and the physical property of buffer layer material is between roller core material and working layer.Described transition zone can be made of multilayer, and it can be the composite that is made of roller core material and working layer, also can be the composite that adds other functional materials.Described transition zone is divided into first transition zone and second transition zone, and transition zone itself is taked the gradient design.

Embodiment 1

Base material material: 100% magnesium iron;

The transition zone material: it is three layers that transition zone is divided into, and is ground floor, the second layer and the 3rd layer from inside to outside.Ground floor adds 20%WC, 2%Cr, and 3%TiC, the residue material is an iron, adds 35%WC in the second layer, 4%Co, 6%TiC; Surplus is an iron.The 3rd layer is added 50%WC, 6%Co, and 9%TiC, surplus is an iron;

Operational layer material: 79%WC, 15%TiC and 6%Co.

Remarks: the percentage that relates in this patent is mass percent.

The above; it only is the specific embodiment of the present invention; but protection scope of the present invention is not limited thereto; any those of ordinary skill in the art are in the disclosed technical scope of the present invention; variation or the replacement that can expect without creative work all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain that claims were limited.

Claims

1. the NEW TYPE OF COMPOSITE roll manufacture method that should repair of bionical high abrasion long-life, get by the complex gradient design from inside to outside of breaker roll material, it is characterized in that, described high abrasion long-life high-performance composite roll comprises roller core from inside to outside, transition zone and working lining, described roller core is the magnesium iron by routine, materials such as carbon steel or low alloy steel constitute, described working lining is then as the W-Co kind carbide alloy, the material that kennametal or high ferrochrome etc. have high rigidity and high-wearing feature constitutes, and the physical property of buffer layer material is between roller core material and working layer.

2. the NEW TYPE OF COMPOSITE roll manufacture method that a kind of bionical high abrasion long-life according to claim 1 should repair, it is characterized in that, described transition zone can be made of multilayer, it can be the composite that is made of roller core material and working layer, also can be the composite that adds other functional materials.

3. the NEW TYPE OF COMPOSITE roll manufacture method that a kind of bionical high abrasion long-life according to claim 1 and 2 should repair is characterized in that described transition zone is divided into first transition zone and second transition zone, and transition zone itself is taked the gradient design.