CN217889065U - Laser cladding wear-resistant alloy roller - Google Patents
Laser cladding wear-resistant alloy roller Download PDFInfo
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- CN217889065U CN217889065U CN202221874318.9U CN202221874318U CN217889065U CN 217889065 U CN217889065 U CN 217889065U CN 202221874318 U CN202221874318 U CN 202221874318U CN 217889065 U CN217889065 U CN 217889065U
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Abstract
The utility model discloses a technical field who rolls the steel roll especially relates to a laser cladding wear-resisting alloy roller. Through the periphery at the roll body sets up a slot, the structure of slot is two soon to opposite and combine the helicla flute structure that the department passes through the circular arc transition, at the steel rolling in-process, because the wear-resisting alloy layer in the outside is exerted pressure the back to steel, lead to alloy-layer structure to have the motion trend to both sides, receive the pressure to both sides promptly, through two spiral flute structures that revolve to opposite make it receive to the pressure conversion of both sides the inside structural stress of wear-resisting alloy layer, because wear-resisting alloy layer adopts high strength alloy material to make it can hold its inside structural stress completely and structural damage can not appear, can eliminate roll body and wear-resisting alloy layer's separation phenomenon simultaneously.
Description
Technical Field
The utility model relates to a roll the technical field of steel roller, especially relate to a laser cladding wear-resisting alloy roller.
Background
The existing steel rolling rollers at home and abroad are made of cast iron, and due to the fact that the steel rolling rollers are used very frequently, after the steel rolling rollers are used for more than one week, the surfaces of the rollers are ground out of grooves by steel, transmission is affected, the surfaces of products are scratched, pits and other quality problems are caused, the rollers must be replaced in time, the tapping temperature is high, the rollers need to adapt to a wider temperature range, and the steel rolling rollers also need to have the performances of corrosion resistance, high temperature resistance, impact resistance and the like.
Existing steel rolls are all provided with a wear-resistant alloy layer on the outside, for example: CN114226473A discloses a novel wear-resistant superhard metallurgy variable frequency roller structure and a production process, comprising a roller substrate; a plurality of fan blade ribs are distributed in the roller base body in an equidistant and circumferential mode, the fan blade ribs are arranged in a vortex mode along the axial direction of the roller base body, a composite coating is arranged on the outer side face of the roller base body, and an alloy fusion layer, a thermal barrier composite layer and a surface working layer are sequentially arranged on the composite coating from inside to outside. The surface of the frequency conversion roller is additionally provided with the composite coating according to the requirement, and if the smooth surface spraying is not beneficial to the combination with the surface coating, the surface of the roller substrate is modified as follows: the outer side surface of the roller matrix is provided with a spiral coarsening structure. After the spiral roughening treatment, the contact area between the roller substrate and the composite coating is increased, and the roller substrate and the composite coating can be effectively combined. Although the roller base body is provided with the spiral coarsening structure, the contact area of the alloy layer and the roller base body can only be increased by the spiral coarsening structure, the metallurgical roller rotates at a high speed for a long time in one direction (about a rotating speed of more than ten or twenty circles per second), meanwhile, the steel needs to be pressed and rolled, and the rolling process is in a high-temperature state, so that the alloy layer and the roller base body easily move relatively, and the separation is easily caused, so that the shedding phenomenon is caused.
Disclosure of Invention
The utility model aims at solving the problem of insufficiency in the prior art and providing a metallurgical roller which adopts the laser cladding process to add a wear-resistant alloy layer structure outside the roller body.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a laser cladding wear-resistant alloy roller comprises a roller body, wherein a connection structure is arranged on the periphery of the roller body, and the periphery of the roller body is connected with a wear-resistant alloy layer through the connection structure;
the connection structure comprises two spiral grooves with opposite rotation directions, and one ends of the two spiral grooves are connected through an arc section.
Through the periphery at the roll body sets up a slot, the structure of slot is two soon to opposite and combine the helicla flute structure that the department passes through the circular arc transition, at the steel rolling in-process, because the wear-resisting alloy layer in the outside is exerted pressure the back to steel, lead to alloy-layer structure to have the motion trend to both sides, receive the pressure to both sides promptly, through two spiral flute structures that revolve to opposite make it receive the pressure conversion to both sides and wear-resisting alloy layer inside structural stress, because wear-resisting alloy layer adopts high strength alloy material, make it can hold its inside structural stress completely and structural damage can not appear, can eliminate roll body and wear-resisting alloy layer's separation phenomenon simultaneously.
On the basis of any embodiment in the scheme of the application, the section of the spiral groove is of a V-shaped structure, a U-shaped structure or a rectangular structure, and the depth of each spiral groove is 0.2-1.0 mm. The above effects can be realized through the structural type of the cross section of the spiral groove, the depth of the spiral groove is not too deep, the wear-resistant alloy layer cannot be strongly combined with the root of the spiral groove easily due to the too deep depth, and the combination strength of the wear-resistant alloy layer and the root of the spiral groove cannot be ensured due to the too shallow depth.
On the basis of any embodiment in the scheme, the improvement is that the anti-falling structure is arranged on the side part of the spiral groove and comprises one of a semicircular structure, a U-shaped structure or a V-shaped structure in cross section. The groove wall of the spiral groove is provided with an anti-falling structure, so that the bonding strength of the spiral groove and the groove wall can be further enhanced.
The improvement is made on the basis of any embodiment in the scheme of the application, a bearing mounting hole is formed in the roller body, bearing interfaces are arranged at two end heads of the bearing mounting hole, and gland grooves are formed in the surfaces of the two end heads of the roller body. The effective installation of the shaft, the bearing and the alloy roller is ensured by arranging the bearing installation hole, the bearing interface and the gland groove.
On the basis of any embodiment in the scheme of the application, the wear-resistant alloy layer comprises a laser cladding transition layer made of a nickel-based alloy and a MoFeCrTiWAlNb-x series high-entropy alloy layer arranged on the outer side of the laser cladding transition layer. The nickel-based alloy and the MoFeCrTiWAlNb-x series high-entropy alloy materials are alloy materials directly purchased in the existing market, and the MoFeCrTiWAlNb-x series high-entropy alloy layers enable the working surface of the finished product metallurgical roll to have the characteristics of high wear resistance, impact resistance and high temperature resistance state alternative cooling water chilling impact, ensure that the metallurgical roll cannot crack and be severely worn under the condition that the rolling speed of a high-speed steel rolling mill is high, and remarkably prolong the service life of the metallurgical roll used on line.
On the basis of any embodiment in the scheme, the following improvement is made, the thickness of the wear-resistant alloy layer is 1.5-2.0 mm, and the thickness of the laser cladding transition layer is 50% -100% of that of the MoFeCrTiWAlNb-x series high-entropy alloy layer. The thickness of the laser cladding transition layer is set to be 50% -100% of the thickness of the high-entropy alloy layer, so that the interlayer structure of the laser cladding transition layer is higher in bonding strength and better in stability.
On the basis of any embodiment in the scheme of the application, the following improvement is made, the outer peripheral surface of the roller body is of an arc surface structure with two large ends and a small middle, and the thickness of the middle part of the wear-resistant alloy layer is larger than the thicknesses of the two ends.
Compared with the prior art, the utility model discloses possess following beneficial effect:
1. the utility model discloses a periphery at the roll body sets up one slot, the structure of slot is two helicla flute structures that soon pass through the circular arc transition to opposite and combination department, at the steel rolling in-process, because the wear-resisting alloy layer in the outside is exerted pressure the back to steel, lead to alloy-layer structure to have the motion trend to both sides, receive the pressure to both sides promptly, through two soon to opposite helicla flute structures make it receive to the pressure conversion of both sides the inside structural stress of wear-resisting alloy layer, because wear-resisting alloy layer adopts high strength alloy material to make it can hold its inside structural stress completely and structural damage can not appear, roll body and wear-resisting alloy layer's separation phenomenon can be eliminated simultaneously.
2. The utility model discloses be provided with anti-disengaging structure on the cell wall of helicla flute, can further strengthen its the bonding strength of the two.
3. The utility model discloses an adopt nickel base alloy and MoFeCrTiWAlNb ~ x series high entropy alloy material to be the alloy material that directly purchases on the existing market and obtain, moFeCrTiWAlNb ~ x series high entropy alloy-layer makes finished product metallurgical roller working face have high wear-resisting, shock-resistant, the high temperature resistant state characteristic of cooling water chilling in turn assaults, ensure high-speed steel rolling mill under the fast condition of rolling speed, the metallurgical roller can not take place fracture and violent wearing and tearing, make the metallurgical roller life who uses on line show the improvement. The thickness of the laser cladding transition layer is set to be 50% -100% of the thickness of the high-entropy alloy layer, so that the interlayer structure of the high-entropy alloy layer has higher bonding strength and better stability.
Drawings
Fig. 1 is a cross-sectional view of an overall structure of an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
fig. 3 is a distribution diagram of a connection structure according to an embodiment of the present invention;
fig. 4 is a cross-sectional view of the overall structure of an embodiment of the present invention;
fig. 5 is a distribution diagram of a connection structure according to an embodiment of the present invention;
fig. 6 is a distribution diagram of the wear-resistant alloy layer according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Example 1
As shown in fig. 1 and fig. 2, the laser cladding wear-resistant alloy roller comprises a roller body 10, wherein a connection structure is arranged on the periphery of the roller body 10, and the periphery of the roller body 10 is connected with a wear-resistant alloy layer 20 through the connection structure;
the connection structure comprises two spiral grooves 30 with opposite rotation directions, and one ends of the two spiral grooves 30 are connected through an arc section.
Because two spiral grooves 30 with opposite rotation directions are arranged on the roller body 10, the bonding strength of the wear-resistant alloy layer 20 and the roller body 10 can be enhanced through the spiral grooves 30, when the technical alloy roller rotates in a high speed in any direction in the steel rolling process, one spiral groove 30 is arranged to ensure the bonding strength of the wear-resistant alloy layer 20 and the roller body 10, and the stability and the reliability of the wear-resistant alloy layer and the roller body are further ensured.
When the alloy roller is in a high-speed steel rolling process, pressure is required to be applied to steel during steel rolling, the alloy layer is in a high-speed operation state during the pressure application process, the extrusion effect of the steel on the alloy layer is bound to be caused, if a conventional single-spiral coarsening mode is adopted, although the connection between the alloy layer and the roller body is met, the relative motion trend between the alloy layer and the roller body is easily caused under the state, the alloy roller is easily separated under the state, and the high-service-life operation of the alloy roller cannot be maintained.
Example 2
As shown in fig. 1 and fig. 2, on the basis of the above embodiment, the cross section of the spiral groove 30 is one of a V-shaped structure, a U-shaped structure or a rectangular structure, preferably a V-shaped structure, so as to facilitate laser cladding processing of the wear-resistant alloy layer 20, the depth of each spiral groove 30 is 0.2 to 1.0mm, the depth of each spiral groove 30 is not too deep, the wear-resistant alloy layer 20 cannot be strongly bonded with the root of the spiral groove 30 due to too deep, and the bonding strength between the two cannot be ensured due to too shallow, so the depth of the spiral groove 30 of the test sample of this company is 0.5mm.
Example 3
As shown in fig. 1 and fig. 2, on the basis of the above embodiment, an improvement is made in that the anti-separation structure 31 is provided at a side portion of the spiral groove 30, the anti-separation structure 31 includes one of a semicircular structure, a U-shaped structure or a V-shaped structure in cross section, preferably a semicircular structure, and the anti-separation structure 31 is provided on the wall of the spiral groove 20, so that the bonding strength of the spiral groove and the anti-separation structure can be further enhanced, and the bearing capacity of the roller body 10 and the wear-resistant alloy layer 20 after the wear-resistant alloy layer 20 is pressed in the steel rolling process can be increased, in particular, when the alloy layer is pressed, the pressing stress of the alloy layer can be dispersed to both sides due to the arrangement of the spiral groove 30 and the anti-separation structure 31, and the arrangement of the anti-separation structure 31 increases the contact area of the spiral groove and the anti-separation structure 31 and facilitates the stress dispersion.
Example 4
As shown in fig. 1 and fig. 4, on the basis of the above embodiment, a bearing mounting hole 11 is formed in the roller body 10, bearing connectors 12 are formed at two ends of the bearing mounting hole 11, and gland grooves 13 are formed on surfaces of two ends of the roller body 10, so that bearings and rotating shafts of the alloy roller can be conveniently mounted.
Example 5
As shown in fig. 6, on the basis of the above embodiment, the wear-resistant alloy layer 20 includes a laser cladding transition layer 21 of a nickel-based alloy and a MoFeCrTiWAlNb-x series high-entropy alloy layer 22 disposed outside the laser cladding transition layer 21, the thickness of the wear-resistant alloy layer 20 is 1.5 to 2.0mm, and the thickness of the laser cladding transition layer 21 is 50 to 100% of the thickness of the MoFeCrTiWAlNb-x series high-entropy alloy layer 22. The nickel-based alloy and the MoFeCrTiWAlNb-x are alloy materials directly purchased in the existing market, and the MoFeCrTiWAlNb-x series high-entropy alloy layers ensure that the working surface of the finished product metallurgical roller has the characteristics of high wear resistance, impact resistance and high-temperature resistance by alternative cooling water chilling impact, so that the metallurgical roller cannot crack or be severely worn under the condition of high rolling speed of a high-speed steel rolling mill, and the service life of the metallurgical roller used on line is obviously prolonged. The thickness of the laser cladding transition layer is set to be 50% -100% of the thickness of the high-entropy alloy layer, the thickness of a company test sample is preferably 50%, and the interlayer structure can be higher in bonding strength and better in stability.
Example 6
As shown in fig. 4, on the basis of the above embodiment, an improvement is made in that the outer circumferential surface of the roller body 10 is in an arc surface structure with two large ends and a small middle, the thickness of the middle part of the wear-resistant alloy layer 20 is greater than the thickness of the two ends, the arrangement of the arc structure is favorable for ensuring that steel is located at the position and is rolled efficiently, and the rolling life is prolonged.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto. The substitution may be of partial structures, devices, method steps, or may be a complete solution. According to the technical scheme of the utility model and utility model thereof think of and equal replacement or change, all should cover within the scope of protection of the utility model.
Claims (7)
1. The laser cladding wear-resistant alloy roller is characterized by comprising a roller body, wherein a connection structure is arranged on the periphery of the roller body, and the periphery of the roller body is connected with a wear-resistant alloy layer through the connection structure;
the connection structure comprises two spiral grooves with opposite rotation directions, and one ends of the two spiral grooves are connected through an arc section.
2. The laser cladding wear-resistant alloy roller according to claim 1, wherein the cross section of each spiral groove is of one of a V-shaped structure, a U-shaped structure or a rectangular structure, and the depth of each spiral groove is 0.2-1.0 mm.
3. The laser cladding wear-resistant alloy roller as claimed in claim 1 or 2, wherein the side of the spiral groove is provided with a retaining structure, and the retaining structure comprises one of a semicircular structure, a U-shaped structure or a V-shaped structure in cross section.
4. The laser cladding wear-resistant alloy roller as claimed in claim 1, wherein a bearing mounting hole is formed in the roller body, bearing connectors are formed at two ends of the bearing mounting hole, and gland grooves are formed on the surfaces of the two ends of the roller body.
5. The laser cladding wear-resistant alloy roller according to claim 3, wherein the wear-resistant alloy layer comprises a laser cladding transition layer of a nickel-based alloy and a MoFeCrTiWAlNb-x series high-entropy alloy layer arranged outside the laser cladding transition layer.
6. The laser cladding wear-resistant alloy roller according to claim 5, wherein the thickness of the wear-resistant alloy layer is 1.5-2.0 mm, and the thickness of the laser cladding transition layer is 50-100% of that of the MoFeCrTiWAlNb-x series high-entropy alloy layer.
7. The laser cladding wear-resistant alloy roller as claimed in claim 1, wherein the outer circumferential surface of the roller body is of an arc surface structure with two large ends and a small middle, and the thickness of the middle part of the wear-resistant alloy layer is larger than the thicknesses of the two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221874318.9U CN217889065U (en) | 2022-07-20 | 2022-07-20 | Laser cladding wear-resistant alloy roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221874318.9U CN217889065U (en) | 2022-07-20 | 2022-07-20 | Laser cladding wear-resistant alloy roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217889065U true CN217889065U (en) | 2022-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221874318.9U Active CN217889065U (en) | 2022-07-20 | 2022-07-20 | Laser cladding wear-resistant alloy roller |
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| Country | Link |
|---|---|
| CN (1) | CN217889065U (en) |
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2022
- 2022-07-20 CN CN202221874318.9U patent/CN217889065U/en active Active
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