CN107335943B - Tubular welding wire for tractor idler build-up welding and welding process thereof - Google Patents
Tubular welding wire for tractor idler build-up welding and welding process thereof Download PDFInfo
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- CN107335943B CN107335943B CN201710714779.7A CN201710714779A CN107335943B CN 107335943 B CN107335943 B CN 107335943B CN 201710714779 A CN201710714779 A CN 201710714779A CN 107335943 B CN107335943 B CN 107335943B
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- welding
- tractor
- welding wire
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Classifications
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- 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
-
- 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
- B23K35/3093—Fe as the principal constituent with other elements as next major constituents
-
- 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
- B23K35/40—Making wire or rods for soldering or welding
Abstract
The invention relates to a tubular welding wire for overlaying welding of an idler wheel of a tractor and a welding process thereof, wherein the tubular welding wire comprises the following components in percentage by mass: 0.05-0.11% of zirconium carbide cermet powder, 1.48-2.11% of electrolytic manganese powder, 0.76-1.1% of ferrosilicon powder, 2.01-2.99% of nickel-chromium-carbide composite powder, 0.05-0.11% of niobium powder and the balance of water-mist-method iron powder. The tractor idler wheel provided by the invention is reasonable in component matching, and the surface quality of the tractor idler wheel is further improved while the size of the tractor idler wheel is repaired, so that the service life of the tractor idler wheel is prolonged.
Description
Technical Field
The invention relates to the technical field of remanufacturing and processing, in particular to a tubular welding wire for overlaying welding of a tractor idler wheel and a welding process thereof.
Background
Tractors are self-propelled power machines used to pull and drive work machines to perform various mobile operations, and are classified into agricultural, industrial and special uses according to their functions and uses. The idler is one of the important spare part on the tractor, and in the in-service use in-process, the phenomenon of wearing and tearing can appear in the idler, when wearing and tearing surpass a certain degree, then need timely change, otherwise can influence the normal work of tractor. The method has high maintenance cost, and the worn idler wheel is not recycled, which causes serious resource waste, so that a method for recycling the idler wheel of the tractor is urgently needed.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a tubular welding wire for overlaying welding of a tractor idler wheel and a welding process thereof.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
the tubular welding wire for overlaying welding of the tractor idler comprises the following components in percentage by mass:
the zirconium carbide cermet powder has high purity, uniform particle size distribution and high surface activity, and has the characteristics of high temperature resistance, oxidation resistance, high strength, high hardness, good thermal conductivity and good toughness, and zirconium carbide is an important high-melting-point, high-strength and corrosion-resistant high-temperature structural material and has the characteristics of efficiently absorbing visible light, reflecting infrared rays, storing energy and the like. Melting point of 3540 ℃ and theoretical density of 6.66g/cm3Coefficient of thermal expansion of 6.7X 10-6/DEG C, microhardness of 2600kg/mm2The resistivity is 57-75/. mu.OMEGA.cm, and the temperature for starting strong oxidation is 1100-1400 ℃.
The ferrosilicon powder comprises the following components in percentage by mass: 42-48% of Si, 0.01-0.1% of C, 0.001-0.01% of S, 0.015-0.02% of P and the balance of Fe. The ferrosilicon is an iron-silicon alloy prepared by smelting coke, steel scraps and quartz (or silica) serving as raw materials in an electric furnace. Since silicon and oxygen are easily synthesized into silica, ferrosilicon is commonly used as a deoxidizer in steel making, and simultaneously, since SiO is used as a deoxidizer2The heat is released in a large amount during the production, and it is advantageous to raise the temperature of molten steel while deoxidizing. Meanwhile, the ferrosilicon can also be used as an alloy element additive and widely applied to low-alloy structural steel, spring steel, bearing steel, heat-resistant steel and electrical silicon steel, and is commonly used as a reducing agent in ferroalloy production and chemical industry.
The nickel-chromium carbide composite powder comprises the following components in percentage by mass: cr (chromium) component3C275% and 25% NiCr. The composite NiCr-Cr carbide powder consists of two different kinds of components, and the NiCr alloy has excellent heat resistance and corrosion resistance and contains Ni in 80-20% of Cr. The Cr-C group being Cr3C2、Cr7C3And Cr23C6The melting temperatures of the three compounds are 1810 ℃, 1726 ℃ and 1575 ℃. Wherein Cr is3C2Is the most common and important one. These chromium carbides have the characteristic of having the strongest resistance to oxidation in metal carbides, and begin to oxidize significantly in air only at 1100-. The hardness is kept quite high under high temperature. Cr (chromium) component3C2It also has strong corrosion resistance and wear resistance, 30 times of that of 1Crl8Ni9Ti stainless steel in dilute sulfuric acid solution and 50 times of that of Co-WC alloy in steam. With NiCr-Cr3C2The abrasion loss of the pipe wall of the boiler pipe of the power plant is reduced from 1.5-2.0 mm/year to 0.03 mm/year by spraying, so that the service life of the boiler pipe is prolonged to more than seven years. NiCr is usually used as the binder phase of the heat-resistant alloy and Cr3C2The hard similar thermal spraying forms a coating, and then the coating is formedExcellent high temperature resistant and wear resistant material. By adopting a plasma spraying process or a plasma spraying process, NiCr alloy and Cr3C2The ceramic can form homogeneous metal ceramic coating under high temperature condition, and the coating has the functions of resisting wear, erosion, cavitation, micro vibration, etc. and high temperature gas resistance.
The niobium powder comprises the following components in percentage by mass: 0.10 to 0.5% of O, 0.005 to 0.01% of H, 0.05 to 0.08% of C, 0.04 to 0.06% of N, 0.01 to 0.05% of Fe, 0.005 to 0.01% of Si, 0.001 to 0.005% of Ni, 0.001 to 0.005% of Cr, 0.1 to 0.5% of Ta, 0.005 to 0.01% of W, 0.003 to 0.005% of Mo, 0.003 to 0.005% of Ti, 0.003 to 0.005% of Mn, 0.003 to 0.005% of Cu, 0.005 to 0.01% of P, 0.006 to 0.01% of S, and the balance of Nb.
The welding process of the tubular welding wire for the tractor idler wheel surfacing is to perform surfacing on the surface of a workpiece by the welding machine.
Before surfacing, oil stains on the surfacing part of the workpiece are removed.
And baking the welding wire before overlaying.
The voltage during overlaying is 34-46V, and the welding speed is 350-450 mm/min.
For welding wires with the diameter of 3.2mm, the current is 300-330A during surfacing.
For welding wires with the diameter of 4mm, the current is 330-450A during surfacing.
The invention has the beneficial effects that: the invention adopts reasonable component collocation, the structure of the surfacing layer is martensite and retained austenite, the metal-metal abrasion resistance is particularly excellent, the welding process performance is good, the size of the tractor idler wheel is repaired, and simultaneously, the surface quality of the tractor idler wheel is further improved, thereby prolonging the service life of the tractor idler wheel.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below.
The first embodiment is as follows:
the tubular welding wire for overlaying welding of the tractor idler comprises the following components in percentage by mass:
the ferrosilicon powder comprises the following components in percentage by mass: 42% of Si, 0.1% of C, 0.01% of S, 0.02% of P and the balance of Fe.
The nickel-chromium carbide composite powder comprises the following components in percentage by mass: cr (chromium) component3C275% and 25% NiCr.
The niobium powder comprises the following components in percentage by mass: 0.10% of O, 0.01% of H, 0.08% of C, 0.04% of N, 0.05% of Fe, 0.005% of Si, 0.005% of Ni, 0.005% of Cr, 0.5% of Ta, 0.005% of W, 0.005% of Mo, 0.005% of Ti, 0.005% of Mn, 0.003% of Cu, 0.01% of P, 0.01% of S, and the balance of Nb.
The welding process of the tubular welding wire for the tractor idler wheel surfacing is to perform surfacing on the surface of a workpiece by the welding machine.
Before surfacing, oil stains on the surfacing part of the workpiece are removed.
And baking the welding wire before overlaying.
The voltage during overlaying is 34V, and the welding speed is 450 mm/min.
For a welding wire with the diameter of 3.2mm, the current during overlaying is 300A.
For a welding wire of phi 4mm, the current during overlaying is 330A.
Example two:
the tubular welding wire for overlaying welding of the tractor idler comprises the following components in percentage by mass:
the ferrosilicon powder comprises the following components in percentage by mass: 48% of Si, 0.05% of C, 0.003% of S, 0.01% of P and the balance of Fe.
The nickel-chromium carbide composite powder comprises the following components in percentage by mass: cr (chromium) component3C275 percent,The NiCr content is 25%.
The niobium powder comprises the following components in percentage by mass: 0.5% of O, 0.005% of H, 0.05% of C, 0.06% of N, 0.01% of Fe, 0.01% of Si, 0.001% of Ni, 0.001% of Cr, 0.1% of Ta, 0.01% of W, 0.003% of Mo, 0.003% of Ti, 0.003% of Mn, 0.005% of Cu, 0.005% of P, 0.001% of S, and the balance of Nb.
The welding process of the tubular welding wire for the tractor idler wheel surfacing is to perform surfacing on the surface of a workpiece by the welding machine.
Before surfacing, oil stains on the surfacing part of the workpiece are removed.
And baking the welding wire before overlaying.
The voltage during overlaying is 46V, and the welding speed is 350 mm/min.
For a welding wire with the diameter of 3.2mm, the current during overlaying is 330A.
For a welding wire with phi of 4mm, the current during overlaying is 450A.
Example three:
the tubular welding wire for overlaying welding of the tractor idler comprises the following components in percentage by mass:
the ferrosilicon powder comprises the following components in percentage by mass: 45% of Si, 0.01% of C, 0.001% of S, 0.015% of P and the balance of Fe.
The nickel-chromium carbide composite powder comprises the following components in percentage by mass: cr (chromium) component3C275% and 25% NiCr.
The niobium powder comprises the following components in percentage by mass: 0.3% of O, 0.008% of H, 0.07% of C, 0.05% of N, 0.03% of Fe, 0.008% of Si, 0.003% of Ni, 0.003% of Cr, 0.3% of Ta, 0.008% of W, 0.004% of Mo, 0.004% of Ti, 0.004% of Mn, 0.004% of Cu, 0.008% of P, 0.006% of S and the balance of Nb.
The welding process of the tubular welding wire for the tractor idler wheel surfacing is to perform surfacing on the surface of a workpiece by the welding machine.
Before surfacing, oil stains on the surfacing part of the workpiece are removed.
And baking the welding wire before overlaying.
The voltage during overlaying is 40V, and the welding speed is 420 mm/min.
For a welding wire with the diameter of 3.2mm, the current during overlaying is 320A.
For a welding wire with phi of 4mm, the current during overlaying is 400A.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments of the steps, which are described in the specification and drawings only for illustrating the principles of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as hereinafter claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. Tractor idler is tubulose welding wire for build-up welding, its characterized in that: the composite material comprises the following components in percentage by mass:
the ferrosilicon powder comprises the following components in percentage by mass: 42-48% of Si, 0.01-0.1% of C, 0.001-0.01% of S, 0.015-0.02% of P and the balance of Fe.
The nickel-chromium carbide composite powder comprises the following components in percentage by mass: cr (chromium) component3C275% and 25% NiCr.
The niobium powder comprises the following components in percentage by mass: 0.10 to 0.5% of O, 0.005 to 0.01% of H, 0.05 to 0.08% of C, 0.04 to 0.06% of N, 0.01 to 0.05% of Fe, 0.005 to 0.01% of Si, 0.001 to 0.005% of Ni, 0.001 to 0.005% of Cr, 0.1 to 0.5% of Ta, 0.005 to 0.01% of W, 0.003 to 0.005% of Mo, 0.003 to 0.005% of Ti, 0.003 to 0.005% of Mn, 0.003 to 0.005% of Cu, 0.005 to 0.01% of P, 0.006 to 0.01% of S, and the balance of Nb.
2. The welding process of the tubular welding wire for tractor idler build-up welding according to claim 1, characterized in that: and overlaying the welding wire on the surface of the workpiece through a welding machine.
3. The welding process of the tubular welding wire for tractor idler build-up welding according to claim 2, characterized in that: before surfacing, oil stains on the surfacing part of the workpiece are removed.
4. The welding process of the tubular welding wire for tractor idler build-up welding according to claim 2, characterized in that: and baking the welding wire before overlaying.
5. The welding process of the tubular welding wire for tractor idler build-up welding according to claim 2, characterized in that: the voltage during overlaying is 34-46V, and the welding speed is 350-450 mm/min.
6. The welding process of the tubular welding wire for tractor idler build-up welding according to claim 2, characterized in that: for welding wires with the diameter of 3.2mm, the current is 300-330A during surfacing.
7. The welding process of the tubular welding wire for tractor idler build-up welding according to claim 2, characterized in that: for welding wires with the diameter of 4mm, the current is 330-450A during surfacing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710714779.7A CN107335943B (en) | 2017-08-19 | 2017-08-19 | Tubular welding wire for tractor idler build-up welding and welding process thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710714779.7A CN107335943B (en) | 2017-08-19 | 2017-08-19 | Tubular welding wire for tractor idler build-up welding and welding process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107335943A CN107335943A (en) | 2017-11-10 |
| CN107335943B true CN107335943B (en) | 2019-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710714779.7A Active CN107335943B (en) | 2017-08-19 | 2017-08-19 | Tubular welding wire for tractor idler build-up welding and welding process thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01148491A (en) * | 1987-12-01 | 1989-06-09 | Kubota Ltd | Composite overlay welding material for continuous casting machine member |
| CN102400083A (en) * | 2011-11-16 | 2012-04-04 | 燕山大学 | Chromium carbide ceramic thermal-spraying flux-cored wire |
| CN106956066A (en) * | 2017-03-31 | 2017-07-18 | 安徽再制造工程设计中心有限公司 | The built-up welding of tractor idle pulley, flux cored wire used for submerged arc welding and its application method |
-
2017
- 2017-08-19 CN CN201710714779.7A patent/CN107335943B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01148491A (en) * | 1987-12-01 | 1989-06-09 | Kubota Ltd | Composite overlay welding material for continuous casting machine member |
| CN102400083A (en) * | 2011-11-16 | 2012-04-04 | 燕山大学 | Chromium carbide ceramic thermal-spraying flux-cored wire |
| CN106956066A (en) * | 2017-03-31 | 2017-07-18 | 安徽再制造工程设计中心有限公司 | The built-up welding of tractor idle pulley, flux cored wire used for submerged arc welding and its application method |
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| Publication number | Publication date |
|---|---|
| CN107335943A (en) | 2017-11-10 |
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