CN117047400A - Method for repairing half-shaft sleeve base - Google Patents
Method for repairing half-shaft sleeve base Download PDFInfo
- Publication number
- CN117047400A CN117047400A CN202311117279.7A CN202311117279A CN117047400A CN 117047400 A CN117047400 A CN 117047400A CN 202311117279 A CN202311117279 A CN 202311117279A CN 117047400 A CN117047400 A CN 117047400A
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- China
- Prior art keywords
- welding
- shaft sleeve
- pass
- spot welding
- sleeve base
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- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000003466 welding Methods 0.000 claims abstract description 147
- 238000005498 polishing Methods 0.000 claims abstract description 23
- 230000008439 repair process Effects 0.000 claims abstract description 8
- 238000005299 abrasion Methods 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 238000010285 flame spraying Methods 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 14
- 238000007493 shaping process Methods 0.000 claims description 4
- 238000009966 trimming Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 11
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- LNSPFAOULBTYBI-UHFFFAOYSA-N [O].C#C Chemical group [O].C#C LNSPFAOULBTYBI-UHFFFAOYSA-N 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
The invention belongs to the field of automobile structures, and discloses a method for repairing a half-shaft sleeve base, which comprises the following steps: performing flame spraying, oil removal and polishing on the worn part of the half-sleeve base; using a welding machine to perform multi-pass welding in an array spot welding mode on the polished worn part, using a standard sleeve after each pass of welding, determining a high-spot welding point and a low-spot welding point according to the sleeve mark, polishing the high-spot welding point, and performing repair welding on the low-spot welding point; and (3) sleeving the welded abrasion part with the half-shaft sleeve, and heating the half-shaft sleeve to 80-100 ℃ to realize interference fit. The invention adopts the mode of array spot welding of welding rods to form the array spot welding at the worn part of the half-shaft sleeve base, forms uniform and dense welding spots on the surface of the half-shaft sleeve base, adopts an angle grinder to grind, a coarse file to grind and a fine file to finish and shape, and realizes the assembly requirement by grinding and sleeving simultaneously, thereby greatly prolonging the service life of the hub sleeve, improving the maintenance assembly level and improving the maintenance quality and efficiency.
Description
Technical Field
The invention belongs to the field of automobile structures, and particularly relates to a method for repairing a half-shaft sleeve base.
Background
The mining vehicle belongs to an off-highway vehicle, is mainly used in mine engineering, and is more durable and more loaded than a general truck. When the TR100 mining truck enters a stope working in a step funnel shape, the wheel hub is often in a climbing state, the wheel hub bears an extra-large load for a long time in the production running process, and the wheel hub sleeve base is easy to wear in different degrees.
When the rear axle half shaft sleeve base is worn to different degrees, if the wear degree is smaller than 50um, the common sample is punched on the surface of the base to form a 'pock' cold work effect to make up the wear amount, and the assembly effect is poor. If the abrasion degree is greater than 50um, a large amount of manpower and material resources are required to be spent for disassembly, assembly and assembly, surfacing processing of an upper machine tool are performed to repair the abrasion surface of the sleeve base, even the hub sleeve is replaced by a new assembly, the cost consumption of spare parts is high, and the equipment maintenance efficiency is extremely low.
Therefore, it is necessary to provide a method for repairing the wear sleeve base on site, which reduces the procedures of disassembly, assembly, surfacing and the like, improves the service life of the hub sleeve, and improves the maintenance assembly level and the maintenance quality.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a method for repairing a worn sleeve base on site, which reduces the procedures of disassembly, assembly, machine tool surfacing and the like, prolongs the service life of the hub sleeve, and improves the maintenance assembly level and the maintenance quality.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a method of repairing a half shaft sleeve base comprising:
performing flame spraying, oil removal and polishing on the worn part of the half-sleeve base;
using a welding machine to perform multi-pass welding in an array spot welding mode on the polished worn part, using a standard sleeve after each pass of welding, determining a high-spot welding point and a low-spot welding point according to the sleeve mark, polishing the high-spot welding point, and performing repair welding on the low-spot welding point;
and (3) sleeving the welded abrasion part with the half-shaft sleeve, and heating the half-shaft sleeve to 80-100 ℃ to realize interference fit.
In some embodiments of the invention, the multiple pass application of the weld in an "array spot welding" manner at the abraded place after grinding using a welder, comprising:
the welding material specification of welding is determined according to the material strength of the half-shaft sleeve base.
In some embodiments of the present invention, the welding material used for welding is selected from the group consisting of welding rods that are one level less strong than the material of the axle sleeve base.
In some embodiments of the invention, the multiple pass application of the weld in an "array spot welding" manner at the abraded place after grinding using a welder, comprising:
the welding voltage is 25-26V and the welding current is 85-90A.
In some embodiments of the invention, the multiple pass application of the weld in an "array spot welding" manner at the abraded place after grinding using a welder, comprising:
the welding spot density interval of the same pass of array spot welding is 5-10mm.
In some embodiments of the invention, the spot density of an "array spot weld" is determined by the width at the wear.
In some embodiments of the invention, the spot density of an "array spot weld" is 5mm.
In some embodiments of the invention, the multiple pass application of the weld in an "array spot welding" manner at the abraded place after grinding using a welder, comprising:
the welding spots of different passes are staggered.
In some embodiments of the present invention, polishing the high spot welds includes:
the polishing precision is improved along with the increase of the welding pass.
In some embodiments of the invention, the polishing precision is improved with the increase of the welding pass, comprising:
rough grinding is carried out on the high-point welding points of the first pass and the second pass, fine grinding is carried out on the high-point welding points of the third pass and the fourth pass, and fine trimming and shaping are carried out on the high-point welding points of the subsequent passes.
The invention has the technical effects and advantages that:
the invention adopts the mode of array spot welding of welding rods to form the array spot welding at the worn part of the half-shaft sleeve base, forms uniform and dense welding spots on the surface of the half-shaft sleeve base, adopts an angle grinder to grind, a coarse file to grind and a fine file to finish and shape, and realizes the assembly requirement by grinding and sleeving simultaneously, thereby greatly prolonging the service life of the hub sleeve, improving the maintenance assembly level and improving the maintenance quality and efficiency.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
FIG. 1 is a flow chart of a method of repairing a half-shaft sleeve base in accordance with the present invention;
FIG. 2 is a schematic view of a first pass "array spot welding";
FIG. 3 is a schematic view of a second pass "array spot welding";
fig. 4 is a schematic diagram of a standard fit-around fitting.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, the present invention provides a method for repairing a half shaft sleeve base, comprising:
performing flame spraying, oil removal and polishing on the worn part of the half-sleeve base;
using a welding machine to perform multi-pass welding in an array spot welding mode on the polished worn part, using a standard sleeve after each pass of welding, determining a high-spot welding point and a low-spot welding point according to the sleeve mark, polishing the high-spot welding point, and performing repair welding on the low-spot welding point;
and (3) sleeving the welded abrasion part with the half-shaft sleeve, and heating the half-shaft sleeve to 80-100 ℃ to realize interference fit.
In some embodiments of the invention, the multiple pass application of the weld in an "array spot welding" manner at the abraded place after grinding using a welder, comprising:
the welding material specification of welding is determined according to the material strength of the half-shaft sleeve base.
In some embodiments of the invention, the welder is used to apply the weld in multiple passes in an "array spot welding" manner at the abraded place after polishing, further comprising:
the welding material for welding is a welding rod with one grade lower strength than the material of the semi-axle sleeve base.
In some embodiments of the invention, the welder is used to apply the weld in multiple passes in an "array spot welding" manner at the abraded place after polishing, further comprising:
the welding voltage is 25-26V and the welding current is 85-90A.
In some embodiments of the invention, the welder is used to apply the weld in multiple passes in an "array spot welding" manner at the abraded place after polishing, further comprising:
the welding spot density interval of the same pass of array spot welding is 5-10mm.
In some embodiments of the invention, the welder is used to apply the weld in multiple passes in an "array spot welding" manner at the abraded place after polishing, further comprising:
the weld spot density of the "array spot weld" is determined by the width at the wear.
In some embodiments of the invention, the welder is used to apply the weld in multiple passes in an "array spot welding" manner at the abraded place after polishing, further comprising:
the welding spot density interval of the same pass of array spot welding is 5mm, the smaller the welding spot density interval density is, the larger the contact surface between the welding spot and the sleeve is, and the assembly precision and the assembly stability can be improved.
In some embodiments of the invention, the welder is used to apply the weld in multiple passes in an "array spot welding" manner at the abraded place after polishing, further comprising:
the welding spots of different passes are staggered, and the size of the contact surface between the welding spots and the sleeve can be adjusted by controlling the density and the arrangement mode of the welding spots, so that the assembly precision and the assembly stability are improved.
In some embodiments of the present invention, polishing the high spot welds includes:
the polishing precision is improved along with the increase of welding passes, and then the assembly precision is improved.
In some embodiments of the invention, the polishing precision is improved with the increase of the welding pass, comprising:
rough grinding is carried out on the high-point welding points of the first pass and the second pass, fine grinding is carried out on the high-point welding points of the third pass and the fourth pass, and fine trimming and shaping are carried out on the high-point welding points of the subsequent passes.
In order to better explain the present solution, the following examples are provided.
Examples
In the embodiment, the base material of the half shaft sleeve of the TR100 mining cart is 45 # quenched and tempered steel.
S1: and (3) degreasing the worn part of the rear axle half shaft sleeve by using oxygen acetylene flame, and grinding the worn part to obtain metallic luster by using a steel wire grinding head of an angle grinder to be welded.
S2: selecting welding machine equipment ZX7-500 type, selecting E5015 welding rod with one level lower strength than 45 # quenched and tempered steel, and the diameter of the welding rodWelding voltage 25-26V and current 85-90A.
S3: and (3) performing multi-pass welding in an array spot welding mode.
As shown in FIG. 2, in the first pass, the density interval of welding spots of 'array spot welding' is 5-10mm, preferably 5mm, then the welding spots are roughly ground by adopting an angle grinder, a standard sleeve is used for finding out high-point welding spots and low-point welding spots according to the sleeve printing mark, repair welding is carried out on the low-point welding spots, and the high-point welding spots are roughly ground by adopting the angle grinder;
in the second pass, as shown in fig. 3, at a first pass interval of 'array spot welding' Shi Hanshang by the same method, as shown in fig. 4, sleeving again by using a standard sleeve, finding out high-spot welding points and low-spot welding points according to the marks, performing repair welding on the low-spot welding points in the second pass, and coarsely grinding the high-spot welding points by using an angle grinder;
and by analogy, carrying out working procedures of the 3 rd, 4 th, 5 th and 6 … … th passes, wherein the 3 rd and 4 th passes are changed into rough file grinding, and fine file finishing and shaping are used after the 5 th pass, and the repair grade is higher as the working procedures are more.
And S4, after the surface of the sleeve base is repaired, the welded abrasion part is sleeved with the half-shaft sleeve, and the half-shaft sleeve is heated to 80-100 ℃ through a constant-temperature heating furnace to realize interference assembly.
In summary, the invention adopts the welding rod 'array spot welding' mode to form 'array' spot welding at the worn part of the half-shaft sleeve base, forms uniform dense welding spots on the surface of the half-shaft sleeve base, adopts an angle grinder to grind, rough file grind and fine file finish and shape, and realizes the assembly requirement by grinding and sleeving simultaneously, thereby greatly improving the service life of the hub sleeve, improving the maintenance assembly level and improving the maintenance quality and efficiency.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.
Claims (10)
1. A method of repairing a half shaft sleeve base, comprising:
performing flame spraying, oil removal and polishing on the worn part of the half-sleeve base;
using a welding machine to perform multi-pass welding in an array spot welding mode on the polished worn part, using a standard sleeve after each pass of welding, determining a high-spot welding point and a low-spot welding point according to the sleeve mark, polishing the high-spot welding point, and performing repair welding on the low-spot welding point;
and (3) sleeving the welded abrasion part with the half-shaft sleeve, and heating the half-shaft sleeve to 80-100 ℃ to realize interference fit.
2. The method for repairing a half-shaft sleeve base according to claim 1, wherein the welding machine is used for performing multiple-pass welding in an 'array spot welding' mode at the polished worn part, and the method comprises the following steps:
the welding material specification of welding is determined according to the material strength of the half-shaft sleeve base.
3. A method for repairing a half shaft sleeve base according to claim 2,
the welding material for welding is a welding rod with one grade lower strength than the material of the semi-axle sleeve base.
4. The method for repairing a half-shaft sleeve base according to claim 1, wherein the welding machine is used for performing multiple-pass welding in an 'array spot welding' mode at the polished worn part, and the method comprises the following steps:
the welding voltage is 25-26V and the welding current is 85-90A.
5. The method for repairing a half-shaft sleeve base according to claim 1, wherein the welding machine is used for performing multiple-pass welding in an 'array spot welding' mode at the polished worn part, and the method comprises the following steps:
the welding spot density interval of the same pass of array spot welding is 5-10mm.
6. A method for repairing a half shaft sleeve base according to claim 5,
the weld spot density of the "array spot welds" is determined by the width of the wear site.
7. A method for repairing a half shaft sleeve base according to claim 5,
the welding spot density of the array spot welding is 5mm.
8. The method for repairing a half-shaft sleeve base according to claim 5, wherein the welding machine is used for performing multiple-pass welding in an 'array spot welding' mode at the polished worn part, and the method comprises the following steps:
the welding spots of different passes are staggered.
9. The method for repairing a half-shaft sleeve base according to any one of claims 1 to 8, wherein the polishing the high-spot welding point comprises:
the polishing precision is improved along with the increase of the welding pass.
10. The method for repairing a casing base of a half shaft according to claim 9, wherein the step of increasing polishing precision with an increase in welding passes comprises:
rough grinding is carried out on the high-point welding points of the first pass and the second pass, fine grinding is carried out on the high-point welding points of the third pass and the fourth pass, and fine trimming and shaping are carried out on the high-point welding points of the subsequent passes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311117279.7A CN117047400A (en) | 2023-08-31 | 2023-08-31 | Method for repairing half-shaft sleeve base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311117279.7A CN117047400A (en) | 2023-08-31 | 2023-08-31 | Method for repairing half-shaft sleeve base |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117047400A true CN117047400A (en) | 2023-11-14 |
Family
ID=88664370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311117279.7A Pending CN117047400A (en) | 2023-08-31 | 2023-08-31 | Method for repairing half-shaft sleeve base |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117047400A (en) |
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2023
- 2023-08-31 CN CN202311117279.7A patent/CN117047400A/en active Pending
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