CN109332864A - A kind of train wheel renovation technique - Google Patents
A kind of train wheel renovation technique Download PDFInfo
- Publication number
- CN109332864A CN109332864A CN201810913937.6A CN201810913937A CN109332864A CN 109332864 A CN109332864 A CN 109332864A CN 201810913937 A CN201810913937 A CN 201810913937A CN 109332864 A CN109332864 A CN 109332864A
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- CN
- China
- Prior art keywords
- welding
- built
- train wheel
- surfacing
- renovation technique
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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
- B23K10/00—Welding or cutting by means of a plasma
- B23K10/02—Plasma welding
- B23K10/027—Welding for purposes other than joining, e.g. build-up welding
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3053—Fe as the principal constituent
- B23K35/3073—Fe as the principal constituent with Mn as next major constituent
-
- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Arc Welding In General (AREA)
- Plasma Technology (AREA)
Abstract
The present invention relates to train wheels to repair field, specifically a kind of train wheel renovation technique, the specific steps of which are as follows: (1) preheats；(2) fixed；(3) distance；(4) local heating；(5) it welds；(6) it keeps the temperature；(7) it is heat-treated；Using the speed of welding of plasma surfacing rifle fast, beautiful appearance, can directly weld and make welding efficiency of the invention high without complicated pre-treatment, use material ranges wide with other surfacing equipments compared with；Hardfacing alloy powder of the invention is as coating material, not by cast, roll, the processing technologys such as wire drawing are limited, the alloy powder of configuration heterogeneity can be required according to different performance, throwing is difficult to especially suitable for those but is easy to the hard, wear-resistant alloy of powder processed, to obtain the overlay cladding of required performance.
Description
Technical field
The present invention relates to train wheels to repair field, specifically a kind of train wheel renovation technique.
Background technique
Plasma powder cladding (built-up welding) is using plasma arc as heat source, and the high temperature generated using plasma arc is by alloy
Powder is heated rapidly with matrix surface and is melted together, mixes, spreads, solidifies, and plasma beam leaves rear self-excitation cooling, forms one
The high performance alloy-layer of layer, so that the bead-welding technology of the reinforcing and hardening of piece surface is realized, since plasma arc has electric arc
Temperature is high, the coefficient of overall heat transmission is big, stability is good, and fusion penetration controllability is strong, can be to the thickness of overlay cladding by adjusting relevant built-up welding parameter
Degree, width, hardness freely adjust in a certain range.It is formed and is melted between basis material and resurfacing welding material after plasma arc powder surfacing
Interface is closed, bond strength is high；Surfacing layer is fine and close, and anti-corrosion and wearability is good；The dilution of basis material and resurfacing welding material is reduced,
Changes in material properties is small；The selectivity that alloy design can be improved using powder as resurfacing welding material, especially being capable of smooth built-up welding
Refractory material improves the wear-resisting of workpiece, high temperature resistant, corrosion resistance.Plasma arc powder surfacing productivity with higher is beautiful
Molding and weld deposit process are easily achieved mechanization and automation.For some components mass of railway territory, remanufacture can
Perfect reparation, the height of metallurgical bonding intensity are realized by mating welding robot, the beauty of appearance molding is other welding
Equipment is incomparable.
Material used in plasma cladding is Ni Ni-based, Co cobalt-based, Fe fe-based self-fluxing alloy powder mostly at present, in spy
Wc diamondite and Tic ceramic powders can be added under different wear-resisting requirement, plasma cladding belongs to a kind of surface quickly metallurgical mistake
Journey, therefore the high bond strength showed after cladding is that other welding procedures are incomparable.The apolegamy of cladding material
It is directly related to the needs that can meet different characteristics.In plasma cladding process, because dilution rate is lower, it is able to satisfy all kinds of
The requirement of special-shaped workpiece cladding, while the high performance such as have the characteristics that build up, precipitation strength, with common argon arc welding, submerged arc
Weldering, cold welding, laser melting coating, electron beam cladding etc. are compared, and plasma cladding is a kind of more efficient, more high-quality, lower table of cost
Face technology for modifying, at home and abroad plasma cladding Technology application to coal mine, industrial and mineral, electric power, petrochemical industry, cement, steel,
The fields such as the large-scale energy are successfully applied in all kinds of workpiece.Such as the pick in coal mining, after through plasma cladding
Pick and not cladding make comparisons, the pick friction durability after plasma cladding increases 10 times, provide for efficiently coal mining
Good technical equipment.Plasma melting coating technique and technique are related to multiple ambits, and the current country specializes in plasma
The mechanism of cladding research is not much, and in addition to a small number of colleges and universities are carrying out some learned researchs, the research of practical application is also opposite
Compare weak.
Summary of the invention
To solve the above-mentioned problems, the present invention proposes a kind of train wheel renovation technique.
A kind of train wheel renovation technique, the specific steps of which are as follows:
(1) it preheats: being preheated needing the train wheel of REPAIR WELDING to be placed in furnace, temperature gradually rises；
(2) fixed: the train wheel after preheating to be placed on before preparing built-up welding on exclusive workbench and worked；
(3) welding gun distance: is maintained at 8-10mm at a distance from train wheel；
(4) it local heating: will need to be dried at the position welded to turn blue with oxygen and acetylene；
(5) it welds: preparing built-up welding according to the parameters that related process sets plasma surfacing rifle；
(6) it keeps the temperature: carrying out heat preservation 6 hours after built-up welding；
(7) it is heat-treated: train wheel being placed in furnace heat again, furnace is cold after heating to take out.
Temperature in step (1) is according to 12 DEG C of heating in every 10 minutes until being heated to 360 DEG C of stopping heating.
The linear velocity of welding gun welding train wheel in step (3) is 190mm/min.
Colleges and universities' water cooling of powerful cooling Power can be provided for plasma surfacing rifle by being provided on the plasma surfacing rifle of step (5)
The circulatory system, the cooling water flow are adjusted to 4.02m3/h。
Technique in step (5) are as follows:
Welding current: 50-400A electric current；
Built-up welding gas: argon gas；
Built-up welding consumptive material: alloy powder；
Built-up welding ion-gas: 1.5-15Mpa；
Gas: 1.5-15Mpa is protected in built-up welding；
Surfacing equipment input voltage: 380V ± 5%；
Surfacing equipment input power: 22KV；
Surfacing equipment cyclic duration factor: 60%；
Surfacing equipment arc maintenance output: 5-50A；
Overlay cladding thickness when built-up welding wheel: 0.5-5mm；
The automatic amplitude of oscillation width of built-up welding wheel: 10-35mm；
Built-up welding wheel single track overlay width: 1-8mm.
The single throat thickness of the step (5) is 3mm.
The mass percent of the specific chemical composition of the alloy powder of the built-up welding consumptive material are as follows: C accounts for 0.25%, Mn and accounts for
3%, Cr accounts for 1.2%, Si and accounts for 1.5%, surplus Fe.
The speed of the built-up welding ion-gas is 0.5-10L/min, and the speed of the built-up welding protection gas is 3-30L/
min。
The beneficial effects of the present invention are: speed of welding using plasma surfacing rifle is fast, beautiful appearance, can directly weld nothing
Complicated pre-treatment is needed to make welding efficiency of the invention high, it is wide using material ranges compared with other surfacing equipments；The present invention
Hardfacing alloy powder as coating material, not by cast, roll, the processing technologys such as wire drawing are limited, can be according to different performance
It is required that the alloy powder of configuration heterogeneity, is difficult to throwing especially suitable for those but is easy to the hard, wear-resistant alloy of powder processed,
To obtain the overlay cladding of required performance.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is train wheel schematic view of the front view of the invention.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, below it is right
The present invention is further described.
As shown in Figure 1, a kind of train wheel renovation technique, the specific steps of which are as follows:
(8) it preheats: being preheated needing the train wheel of REPAIR WELDING to be placed in furnace, temperature gradually rises；
(9) fixed: the train wheel after preheating to be placed on before preparing built-up welding on exclusive workbench and worked；
(10) welding gun distance: is maintained at 8-10mm at a distance from train wheel；
(11) it local heating: will need to be dried at the position welded to turn blue with oxygen and acetylene；
(12) it welds: preparing built-up welding according to the parameters that related process sets plasma surfacing rifle；
(13) it keeps the temperature: carrying out heat preservation 6 hours after built-up welding；
(14) it is heat-treated: train wheel being placed in furnace heat again, furnace is cold after heating to take out.
Temperature in step (1) is according to 12 DEG C of heating in every 10 minutes until being heated to 360 DEG C of stopping heating.
The linear velocity of welding gun welding train wheel in step (3) is 190mm/min.
Colleges and universities' water cooling of powerful cooling Power can be provided for plasma surfacing rifle by being provided on the plasma surfacing rifle of step (5)
The circulatory system, the cooling water flow are adjusted to 4.02m3/h。
Technique in step (5) are as follows:
Welding current: 50-400A electric current；
Built-up welding gas: argon gas；
Built-up welding consumptive material: alloy powder；
Built-up welding ion-gas: 1.5-15Mpa；
Gas: 1.5-15Mpa is protected in built-up welding；
Surfacing equipment input voltage: 380V ± 5%；
Surfacing equipment input power: 22KV；
Surfacing equipment cyclic duration factor: 60%；
Surfacing equipment arc maintenance output: 5-50A；
Overlay cladding thickness when built-up welding wheel: 0.5-5mm；
The automatic amplitude of oscillation width of built-up welding wheel: 10-35mm；
Built-up welding wheel single track overlay width: 1-8mm.
The single throat thickness of the step (5) is 3mm.
Since most built-up welding is large-scale workpiece, it is desirable that high-efficient, the submerged-arc welding and gas shield welding generally used is processed, but
As the requirement of many workpiece surfaces is higher and higher, common electric welding equipment is no longer satisfied processing request, and plasma is automatic
Cladding equipment can greatly solve two hang-up of integrality and high efficiency of technique, for large-scale workpiece build-up wear-resistant layer or
It is to repair large area crackle etc. to have an original advantage, low 200 DEG C than after argon arc welding welding of workpiece surface temperature.
Using the speed of welding of plasma surfacing rifle fast, beautiful appearance, can directly weld and make without complicated pre-treatment
Welding efficiency of the invention is high, wide using material ranges compared with other surfacing equipments.
The mass percent of the specific chemical composition of the alloy powder of the built-up welding consumptive material are as follows: C accounts for 0.25%, Mn and accounts for
3%, Cr accounts for 1.2%, Si and accounts for 1.5%, surplus Fe.
Hardfacing alloy powder of the invention as coating material, not by cast, roll, the processing technologys such as wire drawing are limited,
The alloy powder that configuration heterogeneity can be required according to different performance is difficult to throwing especially suitable for those but is easy to powder processed
Hard, wear-resistant alloy, to obtain the overlay cladding of required performance.
The speed of the built-up welding ion-gas is 0.5-10L/min, and the speed of the built-up welding protection gas is 3-30L/
min。
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and what is described in the above embodiment and the description is only the present invention
Principle, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these variation and
Improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent
Object defines.
Claims (8)
1. a kind of train wheel renovation technique, it is characterised in that: the specific steps of which are as follows:
(1) it preheats: being preheated needing the train wheel of REPAIR WELDING to be placed in furnace, temperature gradually rises；
(2) fixed: the train wheel after preheating to be placed on before preparing built-up welding on exclusive workbench and worked；
(3) welding gun distance: is maintained at 8-10mm at a distance from train wheel；
(4) it local heating: will need to be dried at the position welded to turn blue with oxygen and acetylene；
(5) it welds: preparing built-up welding according to the parameters that related process sets plasma surfacing rifle；
(6) it keeps the temperature: carrying out heat preservation 6 hours after built-up welding；
(7) it is heat-treated: train wheel being placed in furnace heat again, furnace is cold after heating to take out.
2. a kind of train wheel renovation technique according to claim 1, it is characterised in that: the temperature in the step (1)
According to 12 DEG C of heating in every 10 minutes until being heated to 360 DEG C of stopping heating.
3. a kind of train wheel renovation technique according to claim 1, it is characterised in that: the welding gun in the step (3)
The linear velocity for welding train wheel is 190mm/min.
4. a kind of train wheel renovation technique according to claim 1, it is characterised in that: the plasma of the step (5)
Colleges and universities' water-cooling circulating system of powerful cooling Power, the cooling water flow can be provided for plasma surfacing rifle by being provided on surfacing torch
Amount is adjusted to 4.02m3/h。
5. a kind of train wheel renovation technique according to claim 1, it is characterised in that: the technique in the step (5)
Are as follows:
Welding current: 50-400A electric current；
Built-up welding gas: argon gas；
Built-up welding consumptive material: alloy powder；
Built-up welding ion-gas: 1.5-15Mpa；
Gas: 1.5-15Mpa is protected in built-up welding；
Surfacing equipment input voltage: 380V ± 5%；
Surfacing equipment input power: 22KV；
Surfacing equipment cyclic duration factor: 60%；
Surfacing equipment arc maintenance output: 5-50A；
Overlay cladding thickness when built-up welding wheel: 0.5-5mm；
The automatic amplitude of oscillation width of built-up welding wheel: 10-35mm；
Built-up welding wheel single track overlay width: 1-8mm.
6. a kind of train wheel renovation technique according to claim 1, it is characterised in that: the single weldering of the step (5)
It connects with a thickness of 3mm.
7. a kind of train wheel renovation technique according to claim 5, it is characterised in that: the alloyed powder of the built-up welding consumptive material
The mass percent of the specific chemical composition at end are as follows: C, which accounts for 0.25%, Mn and accounts for 3%, Cr and account for 1.2%, Si, accounts for 1.5%, and surplus is
Fe。
8. a kind of train wheel renovation technique according to claim 5, it is characterised in that: the speed of the built-up welding ion-gas
Speed for 0.5-10L/min, the built-up welding protection gas is 3-30L/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810913937.6A CN109332864A (en) | 2018-12-17 | 2018-12-17 | A kind of train wheel renovation technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810913937.6A CN109332864A (en) | 2018-12-17 | 2018-12-17 | A kind of train wheel renovation technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109332864A true CN109332864A (en) | 2019-02-15 |
Family
ID=65292124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810913937.6A Pending CN109332864A (en) | 2018-12-17 | 2018-12-17 | A kind of train wheel renovation technique |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6270511A (en) * | 1985-09-20 | 1987-04-01 | Tokushu Denkyoku Kk | Support member for heating steel material in heating furnace |
| JPH06346216A (en) * | 1993-06-04 | 1994-12-20 | Kinzokukei Zairyo Kenkyu Kaihatsu Center | Plasma spraying gun for inner face |
| CN101144160A (en) * | 2007-09-03 | 2008-03-19 | 德阳中铁科技有限责任公司 | Method for melting and coating anti-rust wear-resistant alloy on steel rail surface |
| CN103668035A (en) * | 2013-12-03 | 2014-03-26 | 南车长江车辆有限公司 | Ferrous alloy spray welding repair material for wagon wheel and repair method thereof |
| CN105522155A (en) * | 2016-03-03 | 2016-04-27 | 中研智能装备有限公司 | Plasma 3D fast forming and remanufacturing method and equipment of train wheels |
| CN105710371A (en) * | 2016-03-03 | 2016-06-29 | 中研智能装备有限公司 | Plasma 3D printing remanufacturing equipment and method for train wheel |
| CN206928151U (en) * | 2017-06-01 | 2018-01-26 | 中研新材料股份有限公司 | A kind of railway track and track switch plasma 3D printing movement prosthetic appliance |
| CN107914012A (en) * | 2017-11-07 | 2018-04-17 | 成都真火科技有限公司 | A kind of method of 3D printing for refractory metal part |
-
2018
- 2018-12-17 CN CN201810913937.6A patent/CN109332864A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6270511A (en) * | 1985-09-20 | 1987-04-01 | Tokushu Denkyoku Kk | Support member for heating steel material in heating furnace |
| JPH06346216A (en) * | 1993-06-04 | 1994-12-20 | Kinzokukei Zairyo Kenkyu Kaihatsu Center | Plasma spraying gun for inner face |
| CN101144160A (en) * | 2007-09-03 | 2008-03-19 | 德阳中铁科技有限责任公司 | Method for melting and coating anti-rust wear-resistant alloy on steel rail surface |
| CN103668035A (en) * | 2013-12-03 | 2014-03-26 | 南车长江车辆有限公司 | Ferrous alloy spray welding repair material for wagon wheel and repair method thereof |
| CN105522155A (en) * | 2016-03-03 | 2016-04-27 | 中研智能装备有限公司 | Plasma 3D fast forming and remanufacturing method and equipment of train wheels |
| CN105710371A (en) * | 2016-03-03 | 2016-06-29 | 中研智能装备有限公司 | Plasma 3D printing remanufacturing equipment and method for train wheel |
| CN206928151U (en) * | 2017-06-01 | 2018-01-26 | 中研新材料股份有限公司 | A kind of railway track and track switch plasma 3D printing movement prosthetic appliance |
| CN107914012A (en) * | 2017-11-07 | 2018-04-17 | 成都真火科技有限公司 | A kind of method of 3D printing for refractory metal part |
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Application publication date: 20190215 |