CN115007966A - Surface wear-resistant surfacing method for railway rolled steel wheel - Google Patents
Surface wear-resistant surfacing method for railway rolled steel wheel Download PDFInfo
- Publication number
- CN115007966A CN115007966A CN202210820231.1A CN202210820231A CN115007966A CN 115007966 A CN115007966 A CN 115007966A CN 202210820231 A CN202210820231 A CN 202210820231A CN 115007966 A CN115007966 A CN 115007966A
- Authority
- CN
- China
- Prior art keywords
- welding
- railway
- flux
- wheel
- overlaying
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 59
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 24
- 239000010959 steel Substances 0.000 title claims abstract description 24
- 238000003466 welding Methods 0.000 claims abstract description 124
- 230000008569 process Effects 0.000 claims abstract description 26
- 230000007704 transition Effects 0.000 claims abstract description 23
- 230000004907 flux Effects 0.000 claims abstract description 21
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 19
- 238000005299 abrasion Methods 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 238000004321 preservation Methods 0.000 claims abstract description 8
- 238000010583 slow cooling Methods 0.000 claims abstract description 6
- 238000005552 hardfacing Methods 0.000 claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 239000010425 asbestos Substances 0.000 claims description 5
- 229910052895 riebeckite Inorganic materials 0.000 claims description 5
- QFXZANXYUCUTQH-UHFFFAOYSA-N ethynol Chemical group OC#C QFXZANXYUCUTQH-UHFFFAOYSA-N 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims 2
- 230000008439 repair process Effects 0.000 abstract description 15
- 238000005272 metallurgy Methods 0.000 abstract description 4
- 238000004904 shortening Methods 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 49
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 239000002184 metal Substances 0.000 description 11
- 229910052751 metal Inorganic materials 0.000 description 11
- 239000000463 material Substances 0.000 description 10
- 238000001816 cooling Methods 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 7
- 239000010953 base metal Substances 0.000 description 5
- 229910000734 martensite Inorganic materials 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910001562 pearlite Inorganic materials 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910001339 C alloy Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000004021 metal welding Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/0026—Arc welding or cutting specially adapted for particular articles or work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/04—Welding for other purposes than joining, e.g. built-up welding
- B23K9/044—Built-up welding on three-dimensional surfaces
- B23K9/046—Built-up welding on three-dimensional surfaces on surfaces of revolution
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The invention relates to a surface wear-resistant surfacing method of a railway rolled steel wheel, which comprises the following steps: 1) heating a region to be welded on the wheel to a preheating temperature of 200 +/-20 ℃ before welding; 2) overlaying a transition layer at the root part of the rim abrasion by adopting a low-carbon alloy-free welding wire and a welding flux, and overlaying a wear-resistant layer on the transition layer by adopting a flux-cored welding wire and the welding flux in a submerged arc manner to obtain an overlaying layer, wherein the temperature at the rim is measured by a thermodetector in the whole welding process, the temperature between layers is controlled to be equal to or higher than the preheating temperature, and the temperature rise of the overlaying layer is controlled to be between 250 DEG and 350 DEG per hour; 3) and immediately carrying out heat preservation and slow cooling by adopting a heat preservation cover after welding. The method adopts double process measures of preheating before welding and overlaying the transition layer, can obviously reduce the crack tendency of the overlaying layer, can effectively improve the wear resistance of the rolled steel wheel after overlaying, and thoroughly solves the problem of shortening the service cycle of the abrasion overlaying repair of the wheel rim of the railway metallurgy vehicle.
Description
Technical Field
The invention belongs to the technical field of deposited metal surfacing welding with high wear resistance of rolled steel wheels, is suitable for field welding repair of worn railway metallurgy vehicle wheels, and more particularly relates to a surface wear-resistant surfacing welding method of railway rolled steel wheels.
Background
In recent years, due to the influence of line transformation of a molten iron area and capacity increase of a molten iron tank, the hardness of a railway track is increased, the abrasion loss of a heavy-load molten iron tank to wheels is increased, the phenomenon that a molten iron car is concentrated to cause abnormal and serious eccentric wear of wheel rims is caused, and the wheels with the abrasion exceeding the standard cannot be continuously used for ensuring safe production and operation. Through statistics of service life of the repairing vehicles, the average operation time of the repairing vehicles is shortened from 12 months to 4-5 months, the repairing workload and the purchasing cost are greatly increased, and risks are brought to transportation and yield conservation. In order to ensure the safety of railway transportation, prolong the service life of the wheel rim of the railway vehicle, reduce the maintenance frequency of the vehicle, the transportation tamping cost and the like, the problem of the pile welding repair needs to be researched and solved.
At present, a low-carbon and alloy-free H08A welding wire is adopted for welding a wheel wear surface surfacing repair process at normal temperature, because a surfacing material belongs to the low-carbon and alloy-free welding wire, the surface hardness of a welded deposited metal is only 45-60% of the hardness of a wheel base metal, the hardness of a wheel rim after welding and repairing by the method is reduced by about 1.5 times compared with the hardness of an original material, the phenomenon of serious wheel rim abrasion of wheels of railway vehicles is caused, and meanwhile, certain risks are brought to safe railway transportation.
Through the search of ' foreign railway wheel repair welding technology development and our country ' status quo ' in the 2 nd month ' welding technology ' in 2004, the wheel repair welding method adopted by our country at present is characterized in that: the wheel is not preheated before welding, and repair welding is carried out at normal temperature; the repair welding material adopts low-carbon non-alloy welding wires (such as H08A) with low strength and good toughness. This low-match (weld overlay hardness lower than base metal hardness) approach is beneficial for improving the toughness of the repair weld metal and for reducing weld lines, but practical flaw detection shows that cracks cannot be completely eliminated with the H08A welding wire. On the other hand, domestic studies have found that repair welding by a method of H08A + HJ431 without preheating results in a weld repair layer having a microstructure of pro-eutectoid ferrite + a small amount of pearlite and a hardness HV142-177 of only 45-70% of the hardness of the wheel base metal, which are unsatisfactory from both of these points.
It would therefore be desirable to devise a method of hardfacing for railway rolled steel wheels that overcomes the above-mentioned drawbacks.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to solve the problem of the wear resistance of the surfacing layer after the rim of the railway freight vehicle is worn, prolong the service life of the wheels of the vehicle and reduce the risk of safe transportation of the railway vehicle.
The rolled steel wheel for the railway in China has a metal microstructure of pearlite and a small amount of ferrite, the Brinell hardness of the surface is HB283 seen from the actual measurement result of the wheel, the carbon content of the wheel steel reaches 0.55-0.65%, and the biggest difficulty in overlaying is to prevent welding cracks. If the surfacing current of the wheel does not exceed 400A under the condition of no preheating, the postweld cooling speed of the 1 st pass is 15-20 ℃/S, and martensite appears in a heat affected zone. Therefore, the wheel rim must be preheated during overlaying so as to ensure that the cooling speed of a heat affected zone does not exceed 10-15 ℃/S. Moreover, tests show that in order to prevent the heat affected zone from generating martensite during wheel overlaying, the cooling speed of the heat affected zone is ensured to be lower than 10 ℃/S. From the previous surfacing situation of the wheel, because the strength and the hardness of the H08A surfacing material are low, the carbon content in the welding wire is 0.070%, and the range of other residual elements is not ideal to be matched with the wheel base material. On the other hand, because a low-carbon alloy-free welding wire is adopted and no preheating surfacing is adopted, two problems are caused: the hardness of the surfacing layer after welding is low (HB120-130), the hardness of the wheel rim is not enough, and the surfacing layer is easy to wear in practical use; the heat affected zone is easy to generate embrittlement tendency, and in addition, the existence of internal stress makes the welding seam and the heat affected zone crack difficult to avoid, so that the use safety of the wheel is greatly reduced.
The method of improving strength and hardness by overlaying metal is different from that of the wheel base metal. The carbon content in the wheel base material is high and is between 0.55 and 0.65 percent, a large amount of pearlite structures can be formed by the high carbon content, and the solid solubility of ferrite is increased by heat treatment, so that the strength and the hardness are improved. However, for the surfacing metal, the method cannot be adopted, because the thermal cycle condition during surfacing is different from that during wheel production, the wheel is heated and cooled integrally during wheel production, and the heating and cooling speed is slow; the bead welding is local heating and cooling, and the heat circulation speed is obviously much faster. The welding cooling speed is generally over 10-15 ℃/S under the condition of no preheating, if the carbon content is higher, martensite is generated, and the surfacing metal becomes brittle, so that the surfacing metal needs to adopt a method of adding a large amount of low carbon alloy to improve the hardness.
Therefore, the invention finally collaborates to develop the flux-cored welding wire for CHD127M hard-surface wear-resistant submerged arc surfacing by the mechanical property of the wheel and a plurality of weldability tests, and the surfacing is carried out by matching with the method of the flux CHF 431. In order to eliminate cracks of the overlaying layer and ensure welding quality, flame is used for preheating to 200 +/-20 ℃ before welding, H08A welding wire with low strength and good toughness is used for overlaying a transition layer, then CHD127M flux-cored welding wire is used for embedding arc overlaying a wear-resistant layer on the transition layer in cooperation with a welding agent, so that the overlaying layer consisting of the transition layer and the wear-resistant layer is obtained, the temperature between layers is controlled to be equal to or slightly higher than the preheating temperature in the welding process, the temperature rise of the overlaying layer is controlled to be 250-350 ℃/H, and the self-made asbestos heat-insulating cover is used for heat insulation and slow cooling immediately after welding. Through the practice of overlaying and repairing the wear surface of the rolled steel wheel of the molten iron tank car, the average service life of the molten iron tank car is prolonged by 1.5 times, and the safe operation of the molten iron tank car is guaranteed; the invention has the advantages of simple equipment, flexible and convenient operation, rapidness and easy mastering.
In order to solve the technical problems, the invention adopts the following technical scheme:
according to an aspect of the invention, there is provided a method of hardfacing a railway rolled steel wheel, comprising the steps of:
1) uniformly and slowly heating the area to be welded on the wheel to a preheating temperature of 200 +/-20 ℃ before welding;
2) overlaying a transition layer at the wheel rim abrasion root part of the wheel by adopting a low-carbon alloy-free welding wire and matching with a welding flux, and overlaying a wear-resistant layer on the transition layer by adopting a flux-cored welding wire and matching with the welding flux in a submerged arc manner to obtain an overlaying layer consisting of the transition layer and the wear-resistant layer, wherein the temperature at the wheel rim is measured by a thermodetector in the whole welding process, the temperature between layers is controlled to be equal to or higher than the preheating temperature, and the temperature rise of the overlaying layer is controlled to be between 250 DEG and 350 DEG/h;
3) and immediately carrying out heat preservation and slow cooling on the wheel by adopting a heat preservation cover after welding.
In one embodiment of the invention, the method further comprises:
4) after the temperature is preserved and the temperature is slowly cooled to the room temperature, the wheel rim is subjected to rotary cutting according to the requirement of the external dimension of the wheel rim.
In one embodiment of the invention, the area to be welded is heated uniformly and slowly in step 1) with an oxyacetylene flame.
In one embodiment of the invention, the low-carbon alloy-free welding wire in the step 2) is an H08A welding wire, the flux-cored welding wire is a CHD127M flux-cored welding wire, and the flux is CHF431 flux.
In one embodiment of the present invention, the flux is baked at 250 ℃ for 2h at 200 ℃ before use.
In one embodiment of the invention, the transition layer in step 2) is built up in 2 layers and has a thickness of 4-6 mm.
In one embodiment of the invention, the diameter of the flux-cored wire adopted in the submerged arc surfacing in the step 2) is 4mm, the voltage is 27-30V, the current is 400-450A, the rod elongation is 25-30mm, and the welding speed is 400-600 mm/min.
In one embodiment of the invention, the whole welding process in step 2) is continuously maintained and is completed in one welding process.
In an embodiment of the invention, the step 2) further includes providing a welding trolley and arranging a wire feeder device on the welding trolley for facilitating quick replacement of the low-carbon alloy-free welding wire and the flux-cored welding wire in the whole welding process.
In one embodiment of the invention, the heat-insulating cover in step 3) is an asbestos heat-insulating cover.
By adopting the technical scheme, compared with the prior art, the invention has the following advantages:
(1) by developing a high-wear-resistance deposited metal welding wire and adopting double process measures of pre-welding preheating and surfacing of a transition layer, the crack tendency of a surfacing layer can be obviously reduced, the hardness value of the surfacing deposited metal can be increased by 1.5 times, the wear resistance of the rolled steel wheel after surfacing can be effectively improved, and the problem of shortening the service cycle of the wear surfacing repair of the railway metallurgy vehicle wheel rim is thoroughly solved.
(2) The welding method has the advantages of simple equipment and tools, convenience for learning and easy mastering, is suitable for surfacing repair of all freight railway transport vehicles with serious wheel abrasion, and has very wide application prospect.
(3) The method can prolong the service life of the repaired vehicle from less than 6 months to more than 12 months, and greatly saves the cost of related materials.
Drawings
FIG. 1 shows a schematic flow diagram of a method for hardfacing a railway rolled steel wheel in accordance with the present invention.
Detailed Description
It should be understood that the embodiments of the invention shown in the exemplary embodiments are illustrative only. Although only a few embodiments of the present invention have been described in detail above, those skilled in the art will readily appreciate that many modifications are possible without materially departing from the teachings of the present subject matter. Accordingly, all such modifications are intended to be included within the scope of this invention. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and parameters and the like of the following exemplary embodiments without departing from the spirit of the present invention.
As shown in FIG. 1, a method of hardfacing of a rolled railway wheel includes the steps of:
step S101: uniformly and slowly heating the area to be welded on the wheel to a preheating temperature of 200 +/-20 ℃ before welding;
step S102: overlaying a transition layer at the wheel rim abrasion root part of the wheel by adopting a low-carbon alloy-free welding wire and matching with a welding flux, and overlaying a wear-resistant layer on the transition layer by adopting a flux-cored welding wire and matching with the welding flux in a submerged arc manner to obtain an overlaying layer consisting of the transition layer and the wear-resistant layer, wherein the temperature at the wheel rim is measured by a thermodetector in the whole welding process, the temperature between layers is controlled to be equal to or higher than the preheating temperature, and the temperature rise of the overlaying layer is controlled to be between 250 DEG and 350 DEG/h;
step S103: and immediately carrying out heat preservation and slow cooling on the wheel by adopting a heat preservation cover after welding.
By adopting the technical scheme, the invention adopts double process measures of preheating before welding and surfacing of the transition layer, can obviously reduce the crack tendency of the surfacing layer, can increase the hardness value of surfacing deposited metal by 1.5 times, can effectively improve the wear resistance of the rolled steel wheel after surfacing, and thoroughly solves the problem of shortening the service cycle of the wear surfacing repair of the rim of the railway metallurgy vehicle; the welding method of the invention has simple equipment and tools, is convenient for learning and easy to master, is suitable for the surfacing repair of all freight railway transport vehicles with serious wheel abrasion, and has very wide application prospect; the method can prolong the service life of the repaired vehicle from less than 6 months to more than 12 months, and greatly saves the cost of related materials.
In the above technical solution, the method further comprises:
after the temperature is preserved and the temperature is slowly cooled to the room temperature, the wheel rim is subjected to rotary cutting according to the requirement of the external dimension of the wheel rim.
In the above technical solution, in step S101, an oxyacetylene flame is used to uniformly and slowly heat the region to be welded.
In the technical scheme, in the step S102, the low-carbon alloy-free welding wire is H08A welding wire, the flux-cored welding wire is CHD127M flux-cored welding wire, and the flux is CHF431 flux.
In the technical scheme, the welding flux is baked for 2 hours at the temperature of 200-250 ℃ before being used.
In the above technical solution, the transition layer in step S102 is built-up with 2 layers and has a thickness of 4-6 mm.
In the technical scheme, the diameter of the flux-cored wire adopted in the submerged arc surfacing in the step S102 is 4mm, the voltage is 27-30V, the current is 400-.
In the above technical solution, the whole welding process in step S102 is continuously maintained and is completed by one-time welding.
In the above technical solution, step S102 further includes providing a welding carriage and setting a wire feeding tray device on the welding carriage for fast replacement of the low-carbon alloy-free welding wire and the flux-cored welding wire during the whole welding process.
In the above technical solution, the heat-insulating cover in step S103 is an asbestos heat-insulating cover.
The above-described technical means of the present invention will be described in detail by way of specific examples.
A method for hardfacing a railway rolled steel wheel specifically comprises the following steps:
(1) the flux is baked for 2 hours at the temperature of 200 ℃ and 250 ℃ before use, and various welding wires are in a dry, oil-free and rust-free state before use.
(2) After the hot metal ladle wheel is arranged on the upper tooling station, a steel wire brush is used for cleaning impurities such as oil, rust, moisture and the like in a to-be-welded area on the wheel edge.
(3) And starting the rotating device wheel to perform wheel cake autorotation, and observing whether the rotation process is stable or not.
(4) Heat treatment before welding: before welding, the area to be welded is uniformly and slowly heated to the preheating temperature of 200 +/-20 ℃ by oxyacetylene flame, so that the cooling speed in the welding process is reduced, and a hard and brittle martensite structure is prevented from being generated.
(5) Bead welding treatment of the wheel rim: in order to reduce the cracking tendency of the surfacing layer, 2 transition layers are surfacing-welded on the root of rim abrasion by adopting a H08A welding wire with low strength and good toughness, the thickness of the transition layers is preferably controlled to be 4-6mm, a newly developed CHD127M flux-cored wire with high wear resistance is adopted, and a CHF431 flux is matched for submerged arc surfacing of the wear-resistant layer, so that the surfacing layer consisting of the transition layers and the wear-resistant layer is obtained.
And observing the temperature condition at the wheel rim by using a temperature measuring instrument in the whole welding process, strictly controlling the interlayer temperature to be equal to or slightly higher than the preheating temperature, and controlling the temperature rise of the surfacing layer to be between 250 ℃ and 350 ℃/h. If the temperature is too fast, the heating should be temporarily suspended for about 10 minutes to slow down the temperature.
In the whole welding process, a set of wire feeding disc device is manufactured behind the existing wire feeding disc of the welding trolley, and two welding wires can be rapidly replaced when welding is convenient.
In the whole welding process, under the condition that the fusion of the base metal is good, the welding parameters are selected as small as possible so as to reduce the heat input quantity. For example, the process parameters of the above-described submerged arc weld deposit are shown in table 1.
TABLE 1 submerged-arc build-up welding process parameters
During the whole welding process, the joints between every two welding lines are staggered by at least 50mm during overlaying.
In the whole welding process, the whole welding process cannot be stopped midway, and one-time welding is required to be finished.
In the whole welding process, the last circle of welding is used for covering the slag on the overlaying layer, so that the slow cooling effect is achieved.
(6) And (3) post-welding treatment: immediately after welding, the welding material is insulated and slowly cooled by an asbestos insulation cover until the welding material is cooled to the room temperature.
(7) Processing treatment: after cooling to room temperature, the rim surfacing layer is visually inspected to have uniform external dimension without welding beading, surface pits and the like, and then the rim surfacing layer is rotationally cut according to the external dimension of the rim. Moreover, the machined part of the rim overlaying layer is subjected to dye penetrant flaw detection, welding defects such as cracks, air holes and slag inclusion are not found, displacement is not found at the joint of the wheel cake and the bearing, and the geometric dimension meets the requirements.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention; the invention is intended to cover by the appended claims, modifications and equivalents, which may fall within the true spirit and scope of the invention.
Claims (10)
1. A surface wear-resistant surfacing method for a railway rolled steel wheel is characterized by comprising the following steps:
1) uniformly and slowly heating the area to be welded on the wheel to a preheating temperature of 200 +/-20 ℃ before welding;
2) overlaying a transition layer at the wheel rim abrasion root part of the wheel by adopting a low-carbon alloy-free welding wire and matching with a welding flux, and overlaying a wear-resistant layer on the transition layer by adopting a flux-cored welding wire and matching with the welding flux in a submerged arc manner to obtain an overlaying layer consisting of the transition layer and the wear-resistant layer, wherein the temperature at the wheel rim is measured by a thermodetector in the whole welding process, the temperature between layers is controlled to be equal to or higher than the preheating temperature, and the temperature rise of the overlaying layer is controlled to be between 250 DEG and 350 DEG/h;
3) and immediately carrying out heat preservation and slow cooling on the wheel by adopting a heat preservation cover after welding.
2. The method of hardfacing of a railway rolled steel wheel according to claim 1, further comprising:
4) after the temperature is preserved and the temperature is slowly cooled to the room temperature, the wheel rim is subjected to rotary cutting according to the requirement of the external dimension of the wheel rim.
3. The method for hardfacing of a railway rolled steel wheel according to claim 1, wherein in step 1) an oxyacetylene flame is used to heat the area to be welded uniformly and slowly.
4. The method for hardfacing a railway rolling wheel according to claim 1, wherein the low-carbon and alloy-free welding wire in step 2) is an H08A welding wire, the flux-cored welding wire is a CHD127M flux-cored welding wire, and the flux is CHF431 flux.
5. The method of hardfacing for a railway runner wheel according to claim 4, wherein the flux is baked at 200-.
6. A method of hardfacing for a railway rolled steel wheel according to claim 5, wherein the transition layer in step 2) is hardfaced in 2 layers and is 4-6mm thick.
7. The method for hardfacing the surface of the steel rolling wheel for the railway according to claim 6, wherein the flux-cored wire adopted in the submerged arc surfacing in the step 2) has the diameter of 4mm, the voltage of 27-30V, the current of 400-.
8. The method of hardfacing for a railway rolled steel wheel according to claim 7, wherein the entire welding process in step 2) is maintained continuously and completed in a single weld.
9. The method for hardfacing a railway rolled steel wheel according to claim 8, further comprising in step 2) providing a welding carriage and providing a wire feeder apparatus on the welding carriage that facilitates quick replacement of the low carbon, unalloyed and flux cored wires during the entire welding process.
10. The method of hardfacing of a railway rolled steel wheel according to claim 1, wherein the heat-retaining mantle in step 3) is an asbestos heat-retaining mantle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210820231.1A CN115007966A (en) | 2022-07-13 | 2022-07-13 | Surface wear-resistant surfacing method for railway rolled steel wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210820231.1A CN115007966A (en) | 2022-07-13 | 2022-07-13 | Surface wear-resistant surfacing method for railway rolled steel wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115007966A true CN115007966A (en) | 2022-09-06 |
Family
ID=83080051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210820231.1A Pending CN115007966A (en) | 2022-07-13 | 2022-07-13 | Surface wear-resistant surfacing method for railway rolled steel wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115007966A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115609203A (en) * | 2022-12-21 | 2023-01-17 | 连云港星耀材料科技有限公司 | Automobile wheel hub welding device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103192225A (en) * | 2013-04-22 | 2013-07-10 | 武汉钢铁(集团)公司 | Metallurgical vehicle wheel set repairing method |
| CN106735972A (en) * | 2017-03-25 | 2017-05-31 | 兰州理工大学 | A kind of restorative procedure of mining gipsy sheave |
| CN112605512A (en) * | 2020-11-06 | 2021-04-06 | 邯郸钢铁集团有限责任公司 | Pulse flash butt welding method for 780 Mpa-grade hot-rolled dual-phase wheel steel |
| CN113275704A (en) * | 2021-05-07 | 2021-08-20 | 徐州徐工矿业机械有限公司 | Technological method for surfacing wear-resistant layer on surface of cast steel rotor body cross beam |
-
2022
- 2022-07-13 CN CN202210820231.1A patent/CN115007966A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103192225A (en) * | 2013-04-22 | 2013-07-10 | 武汉钢铁(集团)公司 | Metallurgical vehicle wheel set repairing method |
| CN106735972A (en) * | 2017-03-25 | 2017-05-31 | 兰州理工大学 | A kind of restorative procedure of mining gipsy sheave |
| CN112605512A (en) * | 2020-11-06 | 2021-04-06 | 邯郸钢铁集团有限责任公司 | Pulse flash butt welding method for 780 Mpa-grade hot-rolled dual-phase wheel steel |
| CN113275704A (en) * | 2021-05-07 | 2021-08-20 | 徐州徐工矿业机械有限公司 | Technological method for surfacing wear-resistant layer on surface of cast steel rotor body cross beam |
Non-Patent Citations (4)
| Title |
|---|
| 丁韦等: "国外铁路车轮补焊技术发展及我国现状", 《焊接技术》, vol. 33, no. 1, 25 February 2004 (2004-02-25), pages 1 - 3 * |
| 丁韦等: "国外铁路车轮补焊技术发展及我国现状", 《焊接技术》, vol. 33, no. 1, pages 1 - 3 * |
| 张强非等: "过渡层在堆焊防磨中的应用", 《内燃机与配件》, vol. 2019, no. 20, 30 October 2019 (2019-10-30), pages 240 - 243 * |
| 杜强非等: "过渡层在堆焊防磨中的应用", 《内燃机与配件》, vol. 2019, no. 20, pages 240 - 243 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115609203A (en) * | 2022-12-21 | 2023-01-17 | 连云港星耀材料科技有限公司 | Automobile wheel hub welding device |
| CN115609203B (en) * | 2022-12-21 | 2023-03-10 | 连云港星耀材料科技有限公司 | Automobile wheel hub welding device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101543926B (en) | Overlaying welding technology of ductile cast iron roller | |
| CN102152058B (en) | Surfacing repair method for large cold-rolled supporting roll | |
| CN105436665B (en) | The method of large-scale hot-rolling supporting roll Cr4 built-up welding reconstruction layer and repaired roller | |
| CN102189316B (en) | Submerged-arc welding overlaying repairing method for stainless steel hot rolled delivery roll | |
| CN103084703B (en) | A kind of large-scale interior empty steel-casting mends built-up welding reproducing method by replacing a damaged part | |
| CA2801245C (en) | Process and apparatus for rail restoration and rail manufacture using welding | |
| CN102974916B (en) | HP series grinding roller open arc built-up welding slip-off preventing welding method | |
| CN105478962B (en) | The method of large-scale cold rolling backing roll 70Cr3Mo built-up welding reconstruction layer and repaired roller | |
| CN104858555A (en) | Pressure pipeline welding process | |
| CN109590668A (en) | A kind of steam turbine cylinder sealing surface renovation technique | |
| CN109877418B (en) | Surfacing repair method for coiled side guide plate | |
| CN104924018A (en) | On-site repairing method for large motor rotor large section cracks | |
| CN103706921A (en) | Build up welding repair method of supporting roller of hot continuous rolling finishing mill | |
| CN105665898A (en) | Automatic submerged arc welding method for pearlitic heat-resistant steel composite board | |
| CN101402152B (en) | Steel-smelting revolving furnace smoke canal weld deposit process | |
| CN112281082A (en) | Laser cladding material and train rail laser cladding repair process | |
| CN101658986A (en) | Build-up welding rod for repairing Cr3 roller and build-up welding method | |
| CN102825367A (en) | Welding method for prolonging service life of high-strength metal shell | |
| CN101722385A (en) | Flux-cored wire and method for welding hot-rolled back-up roll by same | |
| CN115007966A (en) | Surface wear-resistant surfacing method for railway rolled steel wheel | |
| CN114734125B (en) | Preheating-free welding method suitable for 500 HB-grade wear-resistant steel | |
| CN102950363A (en) | Overlaying repair process for winch drum | |
| JP2601741B2 (en) | Rail repair welding method | |
| CN113427219A (en) | Manufacturing method of large steel Yankee drying cylinder | |
| CN103028813B (en) | Welding repair method for local damage of G42CrMo4N cold rolling shaft sleeve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |