CN108176914A - Cylinder jack piston rod cladding build-up welding apparatus and jack piston rod - Google Patents
Cylinder jack piston rod cladding build-up welding apparatus and jack piston rod Download PDFInfo
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- CN108176914A CN108176914A CN201810182770.0A CN201810182770A CN108176914A CN 108176914 A CN108176914 A CN 108176914A CN 201810182770 A CN201810182770 A CN 201810182770A CN 108176914 A CN108176914 A CN 108176914A
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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
- 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
- B23K9/048—Built-up welding on three-dimensional surfaces on surfaces of revolution on cylindrical surfaces
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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
- B23K9/00—Arc welding or cutting
- B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
- B23K9/133—Means for feeding electrodes, e.g. drums, rolls, motors
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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
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
-
- 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
- B23K9/235—Preliminary treatment
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- Arc Welding In General (AREA)
Abstract
The present invention provides a kind of cylinder jack piston rod cladding build-up welding apparatus and jack piston rod, it is equipped with welding gun and welding gun energizing circuit, welding gun front end is equipped with welding gun heating zone, welding gun energizing circuit includes welding gun excitation power source, welding gun is formed into a loop with welding gun energizing circuit by welding base metal, it is additionally provided with welding wire conveying device and welding wire heater circuit, welding wire heater circuit can adjust the length of welding wire front end conveying heated filament section, so as to which welding wire front end conveying heated filament section be controlled to be heated to certain temperature, it often will appear different degrees of corrosion which solve piston rod surface, spot is cheated, coating comes off, the technical issues of surface wear is scratched so as to make jack leakage or drainage.It the composite can be widely applied to the reparation and making of oil cylinder of hydraulic support jack piston rod.
Description
Technical field
The present invention relates to a kind of piston rod and its manufacture craft and device, more particularly to a kind of cylinder jack piston rod
Cladding build-up welding apparatus and jack piston rod.
Background technology
Hydraulic support is to realize the movements such as lifting Forward with hydraulic power, and the equipment for carrying out roof timbering is coal mine synthesis
The key equipment of mechanical mining is the important ring that Modern coal mines realize all process steps full mechanizations such as transport and supporting of mining
Section.Hydraulic support significantly reduces the labor intensity of worker, protects to greatest extent in the use of underground coal mine performing comprehensive coal mining working face
The life security of coal miner and the safety of coal working face are hindered.
Hydraulic support includes oil cylinder of hydraulic support jack, and the critical component of jack is jack piston rod.Due to well
Lower working environment is special, and underground humidity is big (relative humidity about more than 75%), and sulfur dioxide, hydrogen sulfide etc. are contained in underground air
Toxic and harmful gas, the dust containing corrosive deposits such as sulphur is also more, forms the complicated special acidity in underground and alkaline corrosion
Media operation environment.Piston rod works in such a case for a long time, and surface absorbs impact and corrodes, and often will appear in various degree
Corrosion, spot hole and coating the surface defects such as come off, seriously affect the sealing performance of hydraulic cylinder, cause hydraulic cylinder and using
It fails in the process；In addition, piston rod is during frequent use, because part is collided with or coal slag granules impact also results in outer surface
Abrasion is scratched and fail, and burn into impact and abrasion can all cause coating to come off to lead to bad seals, so as to make jack leakage or
Drainage influences stent entirety performance, causes working face that cannot normally produce, and the safety coefficient of production environment substantially reduces.
Existing jack piston rod is generally made using low-carbon alloy steel in 40Cr etc. through Overheating Treatment, mechanical processing,
To prevent from getting rusty, machine-shaping rear surface chromium plating, diameter of piston rod is generally 40-180mm, and length is generally 300mm-
1200mm.Piston rod usage quantity in coal production is big, adopts new technology and the piston rod of failure is repaired, make simultaneously
New piston rod, raising piston rod surface is wear-resisting, corrosion-resistant, shock resistance, extends the service life of column, has important
Meaning.
The existing technique for repairing piston rod includes electric arc spraying, plasma cladding, laser cladding, gas shielded weldering etc., each
Kind technique has the characteristics that：
1st, be the advantages of electric arc spraying process efficiently, material low cost, equipment investment is few；Shortcoming is that coating is combined with base material
It is bad, easily come off, at present the technique stent repair field be eliminated.
2nd, it is that efficient, coating and base material are firmly combined with the advantages of plasma cladding technique, coating quality is high, is used after reparation
Long lifespan, dilution rate are about 5%, and dilution rate is low, save rare metal；Shortcoming is equipment investment height, is existed every about platform equipment
Million yuan or more, coating material is of high cost, and per kilogram cost is complicated for operation at hundred yuan or more, is not easy to grasp.Most fatal weakness
It is that current domestic welding gun quality is unqualified, it is difficult to which long time continuous working, more dependence import welding guns are expensive.
3rd, it is that coating and base material are firmly combined with the advantages of laser cladding process, dilution rate is low, generally zero dilution rate, filling
The performance of material is used effectively, and coating quality is high, and service life is long after reparation；Shortcoming be equipment investment height, single-piece reparation into
This height.
4th, gas shielded Welding is mainly welded using solid core welding wire gas shielded, which is currently widely used for piston rod and repaiies
Multiple, but there are the following problems：
(1) one kind be carbon steel solid core welding wire boxing resizing, then chromium plating anticorrosion, but chrome layer due to hardness is high,
Brittleness is larger, and crackle easily occurs when layers of chrome is impacted, and it is unstable to easily cause blistering, corrosion, corrosion resistance；Plating causes water source
Pollution and the destruction of environment；Electroplating technology can not local route repair, whole root post coating need to be integrally electroplated, increase repair into
This.
(2) welderings such as another kind is welded using solid core chromium nickel stainless steel welding wire gas shielded, and this method easily generates stomata, is mingled with
Defect is connect, first-time qualification rate is low, and subsequent soldering workload is very big.The defects of some are tiny naked eyes are difficult to find, if comprehensively
Flaw detection, certainly will increase cost, while production efficiency can also substantially reduce.In addition, the process dilution rate is high, about 30%
Left and right, chromium nickel stainless steel active ingredient are diluted, and rustproof property declines.
To sum up, plasma and laser cladding surfacing layer quality are high, but equipment investment amount is big, it is difficult to popular popularization；
Gas shielded welds efficient, small investment, but there are surfacing layer quality defects, and first-time qualification rate is low, secondary soldering heavy workload.
Invention content
The present invention is directed to technical problem present in more than oil cylinder of hydraulic support jack piston rod reparation and manufacture craft,
It provides that a kind of surface abrasion resistance, corrosion-resistant, shock resistance is strong, piston rod service life can be extended, while processing cost is low, process
It is efficient, the low oil cylinder of hydraulic support jack piston rod cladding overlaying method of dilution rate and device and by the work during welding
The jack piston rod that skill and device are produced, this method can be used for repairing damaged piston rod, can be used for making
Make new piston rod.
For this purpose, the technical scheme is that, a kind of cylinder jack piston rod cladding build-up welding apparatus, equipped with welding gun and weldering
Rifle energizing circuit, welding gun front end are equipped with welding gun heating zone, and welding gun energizing circuit includes welding gun excitation power source, and welding gun is excited with welding gun
Circuit is formed into a loop by welding base metal；
Welding wire conveying device and welding wire heater circuit are additionally provided with, welding wire conveying device can realize the feeding of welding wire, welding wire
Heater circuit includes welding wire heating power supply, and welding wire conveying device front end is equipped with welding wire conduction regulating device, set on welding wire conduction tune
Welding wire of the regulating device front end close to welding base metal side conveys heated filament section for welding wire front end, and welding wire heater circuit passes through welding wire conduction
Welding wire front end is conveyed regulating device heated filament section and welding base metal is formed into a loop, before welding wire conduction regulating device can adjust welding wire
The length of end conveying heated filament section, so as to which welding wire front end conveying heated filament section be controlled to be heated to certain temperature；
The welding gun central axes of welding gun are overlapped with welding base metal vertical axis or welding gun central axes and welding base metal vertical axis
Inclination angle arrangement is formed between line；
The axis of welding wire front end conveying heated filament section is parallel with welding base metal horizontal axis or welding wire front end conveys heated filament section
Axis and welding base metal horizontal axis between formed welding wire feeding angle；
The front end of welding wire front end conveying heated filament section is located at the region of welding gun heating zone, is heated to the welding wire front end of certain temperature
The end of conveying heated filament section can form molten drop in welding gun heating zone part, and welding gun heating zone can be by the outer surface of welding base metal
Molten bath is thermally formed, molten bath can adsorb the welding wire front end conveying heated filament section for being heated to certain temperature in welding gun heating zone part shape
Into molten drop, molten drop and molten bath form atom and combined, and molten drop is welded in welding base metal with molten bath formation atom bound fraction cladding heap
Outer surface；
Welding base metal can be rotated with certain speed along welding base metal central axis, welding gun and welding wire front end conveying heated filament
Section can form screw with welding base metal, and cladding heap is welded in the atom knot that the molten drop of welding base metal outer surface is formed with molten bath
The close Spiral distribution of arrangement can be formed in welding base metal outer surface by closing part.
Preferably, welding base metal is alloy carbon steel material, and solder deposition overlay cladding is austenitic stainless steel material.
Preferably, the end of welding wire front end conveying heated filament section is located inside welding gun heating zone, welding wire front end conveying heated filament section
End and welding gun central axes and the distance of welding base metal intersection point be 2mm-5mm.
Preferably, the end of welding wire front end conveying heated filament section is located at welding gun heating zone and is radiated welding base metal outer surface profile
The outermost endpoint location of line.
Preferably, the end of welding wire front end conveying heated filament section is located at using welding gun central axes direction as the diameter 10mm of cylindrical wire
The imaginary circles cylinder of ± 2mm projects to the interior zone of welding base metal outer surface profile line, welding gun front end and welding base metal away from
From for 10mm ± 3mm.
Preferably, welding gun heating zone is radiated the region of welding base metal outer surface and welding wire front end and conveys heated filament section along weldering
The region of axis projections to the welding base metal outer surface of silk front end conveying heated filament section is located at welding base metal vertical axis side simultaneously
In 0 ° -45 ° fan-shaped welding regions.
Preferably, the welding gun inclination angle formed between welding gun central axes and welding base metal vertical axis is 5 ° ± 2 °.
Preferably, the welding wire feeding angle formed between the welding wire front end conveying axis of heated filament section and welding base metal horizontal axis
Spend is 5 ° ± 2 °.
A kind of jack piston rod, including welding base metal and according to above-mentioned oil cylinder of hydraulic support jack piston rod cladding heap
Welder cladding heap is soldered to the solder deposition overlay cladding of welding base metal outer surface.
Preferably, welding base metal is alloy carbon steel material, and the solder deposition overlay cladding is austenitic stainless steel material.
Present invention has the advantages that since welding base metal is alloy carbon steel material, solder deposition overlay cladding is stainless for chromium nickel
Steel material, the atom bound fraction that the molten drop that cladding heap is welded in welding base metal outer surface is formed with molten bath can be outside welding base metal
Surface, which is formed, arranges close Spiral distribution, the outer surface of the oil cylinder of hydraulic support jack piston rod of reparation is wear-resisting, it is corrosion-resistant,
Shock resistance is strong, can extend piston rod service life, while processing cost is low, high in machining efficiency, and dilution rate is low during welding
Oil cylinder of hydraulic support jack piston rod cladding overlaying method and a kind of jack piston rod, this method can be used for repairing broken
The piston rod of damage can be used for making new piston rod.
Description of the drawings
Fig. 1 is the structure diagram of the embodiment of the present invention；
Fig. 2 is enlarged drawing 1 at the J of Fig. 1；
Fig. 3 is the schematic diagram of welding wire heater circuit；
Enlarged drawing 2 at the J of Fig. 4 Fig. 1；
Fig. 5 is piston rod vertical view；
Fig. 6 is the structure diagram of the oil cylinder of hydraulic support jack piston rod after repairing.
Symbol description in figure：
1. welding base metal；2. welding wire front end conveys heated filament section；3. welding wire conduction regulating device；4. welding wire conveying device；5.
Welding wire；6. welding wire heating power supply；7. welding gun excitation power source；8. welding base metal direction of rotation；9. solder deposition overlay cladding；It is 10. molten
Pond；11. welding gun；12. welding gun inclination angle；13. welding gun heating zone；14. molten drop；15. welding wire heater circuit；16. welding gun energizing circuit；
17. welding gun central axes；18. welding base metal vertical axis；19. welding base metal horizontal axis；20. fan-shaped welding region；It is 21. very heavy
Push up piston rod；22. welding wire feeding angle；23. welding base metal central axis；24. welding gun heating zone is radiated welding base metal appearance
The region in face；25. welding gun heating zone is radiated the outermost endpoint location of welding base metal outer surface profile line.
Specific embodiment
The present invention is described further with reference to embodiment.
Embodiment
Fig. 1-Fig. 6 is the reality of a kind of oil cylinder of hydraulic support jack piston rod cladding build-up welding apparatus of the present invention and processing technology
Apply example.
As shown in Figure 1, a kind of oil cylinder of hydraulic support jack piston rod cladding build-up welding apparatus of the present invention, equipped with 11 He of welding gun
Welding gun energizing circuit 16,11 front end of welding gun are equipped with welding gun heating zone 13, and welding gun energizing circuit 16 includes welding gun excitation power source 7, weldering
Rifle 11 is formed into a loop with welding gun energizing circuit 16 by welding base metal 1；It is defeated to can also be seen that the device is additionally provided with welding wire in Fig. 1
Device 4 and welding wire heater circuit 15 are sent, welding wire conveying device 4 can realize the feeding of welding wire 5, and welding wire heater circuit 15 includes weldering
Silk heating power supply 6,4 front end of welding wire conveying device is equipped with welding wire conduction regulating device 3, set on 3 front end of welding wire conduction regulating device
Welding wire 5 close to 1 side of welding base metal conveys heated filament section 2 for welding wire front end, and welding wire heater circuit 15 is adjusted by welding wire conduction
Welding wire front end conveying heated filament section 2 and welding base metal 1 are formed into a loop by device 3, before welding wire conduction regulating device 3 can adjust welding wire
The length of end conveying heated filament section 2, so as to which welding wire front end conveying heated filament section 2 be controlled to be heated to certain temperature.
The embodiment can overlap welding gun central axes 17 with welding base metal vertical axis 18, welding gun central axes 17 and welding
When base material vertical axis 18 overlaps, welding gun heating zone 13 is radiated the peak of welding base metal 1, at the peak of welding base metal 1
Molten bath 10 can be formed, molten bath 10 basically forms symmetrical relative to welding base metal vertical axis 18；Welding wire front end conveys heated filament
The axis of section 2 is parallel with welding base metal horizontal axis 19, and the front end of welding wire front end conveying heated filament section 2 is located at welding gun heating zone 13
Region, molten drop can be formed in 13 part of welding gun heating zone by being heated to the end of the welding wire front end conveying heated filament section 2 of certain temperature
14, the outer surface of welding base metal 1 can be thermally formed molten bath 10 by welding gun heating zone 13, and molten bath 10, which can be adsorbed, to be heated to centainly
The molten drop 14 that the welding wire front end conveying heated filament section 2 of temperature is formed in 13 part of welding gun heating zone, molten drop 14 form original with molten bath 10
Son combines, and molten drop 14 is welded in the outer surface of welding base metal 1, molten drop 14 and molten bath with the formation atom bound fraction cladding heap of molten bath 10
10 formation are firmly attached, while be securely attached together with the base material of welding base metal 1.
In the embodiment, Fig. 1 and Fig. 2 can be seen that welding gun heating zone 13 be radiated 1 outer surface of welding base metal region and
Welding wire front end conveying heated filament section 2 is same along the region of axis projections to 1 outer surface of welding base metal of welding wire front end conveying heated filament section 2
When be located in the fan-shaped welding regions in -45 ° of 0 ° of welding base metal vertical axis side, can ensure that the welding wire front end heated is defeated in this way
Heated filament section 2 is sent to be constantly in the heating region of welding gun heating zone 13, the front end of welding wire front end conveying heated filament section 2 is very easy to shape
Into molten drop 14, molten drop 14 can be continuously combined with the molten bath 10 that the outer surface of welding base metal 1 is thermally formed；The embodiment
In, inclination angle arrangement, welding gun central axes 17 and welding can will be formed between welding gun central axes 17 and welding base metal vertical axis 17
The welding gun inclination angle 12 formed between base material vertical axis 18 is 5 ° ± 2 °, due to welding gun central axes 17 and welding base metal vertical axis
The welding gun inclination angle 12 formed between 18 is 5 ° ± 2 °, it can be seen that, A is welding gun inclination angle 22 in Fig. 1, and welding gun inclination angle 22 is located at welding
The side of base material vertical axis 18；Such design basically forms symmetrically with molten bath 10 relative to welding base metal vertical axis 18
Distribution is different, can cause welding gun heating zone 13 that whole leave in molten bath 10 that the outer surface of welding base metal 1 is thermally formed is welded mother
The most vertex position of material 1, molten bath 10 and the outer surface of welding base metal 1 form certain tension, meanwhile, because molten bath 10 has one
Fixed quality, molten bath 10 is whole, and there is the sliding forces downwardly along welding base metal 1；It can further be seen that welding wire in Fig. 2
Welding wire feeding angle 22, the conveying of welding wire front end are formed between the axis of front end conveying heated filament section 2 and welding base metal horizontal axis 19
The welding wire feeding angle 22 formed between the axis of heated filament section 2 and welding base metal horizontal axis 19 is 5 ° ± 2 °, and welding wire front end is defeated
After the end of heated filament section 2 is sent to form molten drop 14, due to the axis of welding wire front end conveying heated filament section 2 and welding base metal horizontal axis 19
Between the welding wire feeding angle 22 that is formed be 5 ° ± 2 °, the molten condition of the molten drop 14 can convey heated filament section 2 with welding wire front end
Adhesion is formed, while the molten drop 14 of molten condition can form atom with molten bath 10 rapidly again and be combined, because of welding wire feeding angle
The presence of degree 22, the state of the presentation downward angle of molten drop 14 form complete atom with molten bath 10 and are combined, this downward angle
Degree can preferably avoid molten drop 14 and close on the relatively low welding base metal 1 of 10 temperature of molten bath before forming complete atom and combining
Surface area contact, such improper contact can lead to the non-atomic of the surface of the welding base metal 1 relatively low with temperature of molten drop 14
With reference to quality problems.
Welding base metal 1 can be rotated with certain speed along welding base metal central axis 23, and welding gun 11 and welding wire front end are defeated
Send heated filament section 2 that can form screw with welding base metal 1, cladding heap is welded in molten drop 14 and the molten bath of 1 outer surface of welding base metal
The 10 atom bound fractions formed can form in 1 outer surface of welding base metal and arrange close Spiral distribution, can be according to difference
The welding base metal 1 of diameter adjusts the various rotary speeies of welding base metal 1 and welding gun 11 and welding wire front end conveying heated filament section 2
The speed of transverse shifting, to form the Spiral distribution of the solder deposition overlay cladding 9 of various density and thickness.
In the embodiment, welding base metal 1 is alloy carbon steel material, and solder deposition overlay cladding 9 is chromium nickel stainless steel material.
In the parameter setting of the device, the end of welding wire front end conveying heated filament section 2 is located inside welding gun heating zone 13
When, it is 2mm-5mm that welding wire front end can be conveyed to the end of heated filament section 2 and the distance of 1 outer surface of welding base metal, such distance
The formation of the molten drop 14 of welding wire front end conveying heated filament section 2, the especially end of welding wire front end conveying heated filament section 2 and weldering can be met
When the distance for connecing 1 outer surface of base material is 3mm ± 0.5mm, through overtesting, the effect that molten drop 14 is formed is best.
But found by many experiments, when welding wire 5 is sent directly into the heating electric arc of welding gun heating zone 13, heating weldering
For the welding wire heating power supply 6 of silk 5 due to being AC power, the heating electric arc of meeting Butt welding gun heating zone 13 generates electromagnetic interference, molten drop
14 can form splashing with molten bath 10, and welding procedure is unstable.
In order to advanced optimize the problem, the end of welding wire front end conveying heated filament section 2 is located at welding gun heating zone 13 and is radiated
It, can will be before welding wire in order to facilitate the debugging of technical parameter to the outermost endpoint location of 1 outer surface profile line of welding base metal
The end of end conveying heated filament section 2 is located at using 17 direction of welding gun central axes as the imaginary circles cylinder of diameter 10mm ± 2mm of cylindrical wire
Projecting to the interior zone of 1 outer surface profile line of welding base metal, the distance of 1 front end of welding gun and welding base metal 1 is 10mm ± 3mm,
During practical application, the debugging acid of a diameter 10mm ± 2mm can be made, facilitates the parameter testing at scene；Such design, when
Welding wire 5 is with 1 contact point of welding base metal at the edge in molten bath 10, and welding wire 5 is first fused into the molten drop 14 of drops, then drops
Molten drop 14 successfully flow into molten bath 10, heating electric arc, molten bath 10, the welding wire 5 of welding gun heating zone 13 melt all very stable, weldering
Material deposition overlay cladding 9 is molded also more regular beauty；When welding wire 5 leaves 10 edge a distance of molten bath, the fusing of welding wire 5 is not
The molten drop 14 with very high tension can be formed, the state that brook shape can be presented flows into molten bath 10, molten drop 14 and the original in molten bath 10 again
Sub- cohesive process is not smooth enough, therefore, is at the edge in molten bath 10 by welding wire 5 and the contact point of welding base metal 1 in the embodiment
It is most suitable, it can ensure that the atom bound fraction that molten drop 14 is formed with molten bath 10 can form row in 1 outer surface of welding base metal
Close Spiral distribution is arranged, for the embodiment since welding base metal is alloy carbon steel material, solder deposition overlay cladding is stainless for chromium nickel
Steel material, dilution rate is low during welding, significantly ensure that the low dilution rate of base material, is also to ensure that the pure of welding wire 5
Degree enhances the corrosion resistance of solder deposition overlay cladding 9, meanwhile, the compactness that molten drop 14 is combined with the atom that molten bath 10 is formed,
The outer surface that also improves oil cylinder of hydraulic support jack piston rod is wear-resisting, corrosion-resistant, shock resistance, and extending piston rod makes
Use the service life.
Meanwhile the embodiment uses and heats welding wire front end conveying heated filament section 2 before welding wire 5 is filled into molten bath 10
To 100-300 DEG C of temperature, which reduces the energy that are consumed of traditional handicraft of arc-melting welding wire 5, improve efficiency, drop
Low dilution rate, while processing cost is low, this method can be used for repairing damaged piston rod, can be used for making new
Piston rod.
The concrete application processing step and technological parameter of apparatus above is described in detail below.
In the embodiment, oil cylinder of hydraulic support jack piston rod 21 to be repaired is the welding in above device description
Base material 1, the material of the oil cylinder of hydraulic support jack piston rod 21 to be repaired is 40Cr, belongs to medium carbon low alloy steel, welding wire 5
Using 316L stainless steels, belong to austenitic stainless steel, according to following technique, 316L stainless steel welding stick cladding heaps are soldered to be repaired
The outer surface of oil cylinder of hydraulic support jack piston rod 21 forms solder deposition overlay cladding 9, by oil cylinder of hydraulic support to be repaired
Jack piston rod 21, which is repaired, to be completed.
Oil cylinder of hydraulic support jack piston rod cladding build-up welding apparatus in the embodiment includes during concrete application following
Processing step：
(1) preparatory process includes the following steps：
The chrome layer on 21 surface of oil cylinder of hydraulic support jack piston rod to be repaired is removed；
21 entirety of oil cylinder of hydraulic support jack piston rod to be repaired is preheating to 200 DEG C ± 10 DEG C；
Oil cylinder of hydraulic support jack piston rod 21 to be repaired is fixed on rotatable device, makes piston rod 21 can
To be rotated around the rotation centerline of rotatable device；
(2) welding gun 11 adjusts process with welding wire 5 and includes the following steps：
The end of adjustment welding wire front end conveying heated filament section is located inside welding gun heating zone, and welding wire front end conveys the end of heated filament section
End is 2mm-5mm with the distance of welding gun central axes and welding base metal intersection point；
The welding wire length for adjusting welding wire front end conveying heated filament section 2 is 10mm-20mm；
Adjustment welding gun central axes 17 overlapped with oil cylinder of hydraulic support jack piston rod vertical axis 18 to be repaired or
It adjusts and inclination angle arrangement, welding gun central axes 17 and liquid to be repaired is formed between welding gun central axes 17 and welding base metal vertical axis 18
The welding gun inclination angle 12 formed between pressure stent cylinder jack piston rod vertical axis 18 is 5 ° ± 2 °.
Adjust the axis of welding wire front end conveying heated filament section 2 and oil cylinder of hydraulic support jack piston rod trunnion axis to be repaired
Line 19 is parallel or adjustment welding wire front end conveys the axis of heated filament section 2 and oil cylinder of hydraulic support jack piston rod water to be repaired
Welding wire feeding angle 22, the axis of welding wire front end conveying heated filament section 2 and hydraulic support oil to be repaired are formed between flat axis 19
The welding wire feeding angle 22 formed between cylinder jack piston rod horizontal axis 19 is 5 ° ± 2 °.
Welding wire heating power supply 6 is connected, the welding wire of welding wire front end conveying heated filament section 2 is heated, keeps welding wire front end conveying heat
Silk section 2 is heated to 100-300 DEG C of temperature before molten bath 10 is entered；
Start to convey argon gas in advance；
Start welding gun water-cooling system and Water-cooling circulating is provided；
(3) cladding built-up welding welding sequence includes the following steps：
High frequency ignites welding gun electric arc, which can lag 1-2S than previous process or adjust as needed arbitrary stagnant
Time afterwards；
Start rotatable device rotation, oil cylinder of hydraulic support jack piston rod 21 to be repaired is driven to rotate, when to be repaired
Oil cylinder of hydraulic support jack piston rod 21 when being rotated on rotatable device, welding gun 11 can be along piston rod 21 to be repaired
Outer surface vertically moves, and the plumb joint of welding gun 11 forms screw with piston rod 21 to be repaired, and welding wire 5 is complete with spiral trajectory
The cladding built-up welding welding of 21 outer surface of oil cylinder of hydraulic support jack piston rod to be repaired in pairs, the technique ginseng of the deposition built-up welding
Number is default as follows：
A. argon gas valve regulated throughput is opened；
B. welding current：200-230A；
C. weldingvoltage：Direct current 14-17V；
D. the throughput of argon gas：6L/min；
E. the welding wire electric current of welding wire front end conveying heated filament section 2：50-100A；
F. the wire feed rate of welding wire 5：1.8m/min；
G. 21 outer surface cladding built-up welding welding layer thickness of oil cylinder of hydraulic support jack piston rod to be repaired is 0.5-
The thickness of cladding built-up welding welding layer can also be set as the thickness of any needs by 2.0mm, only need to adjust welding wire 5 with it is to be repaired
The screw speed of oil cylinder of hydraulic support jack piston rod 21 can easily realize different throat thickness；
(4) cladding built-up welding welding completion process includes the following steps：
When welding gun 11 reaches oil cylinder of hydraulic support 21 tail end of jack piston rod to be repaired, welding wire 5 all will be to be repaired
The 21 outer surface cladding built-up welding of oil cylinder of hydraulic support jack piston rod after the completion of, welding gun 11 and welding wire 5 stop conveying, welding gun 11
Electric current starts attenuation until extinguishing；
After lagging 8-10S, the argon gas of welding gun 11 stops gas supply, can also control lag any time；
Welding gun water-cooling system stops Water-cooling circulating；
Rotatable device stops；
Cladding built-up welding welding is completed.
In process above step, for convenience of operating, following method is taken to be adjusted, adjustment welding wire front end conveying heated filament section
2 end is located at using 17 direction of welding gun central axes as the external table of virtual cylinder of a diameter of φ 10mm ± 2mm of cylindrical center's line
Face is along 17 direction projection of welding gun central axes to 21 outer surface profile line of oil cylinder of hydraulic support jack piston rod to be repaired
The distance of interior zone, 11 front end of welding gun and oil cylinder of hydraulic support jack piston rod 21 to be repaired is 10mm ± 3mm, practical
During operation, the debugging acid of a diameter 10mm ± 2mm is processed, facilitates the parameter testing at scene.
The end that welding wire front end conveying heated filament section 2 can also be adjusted is located at welding gun heating zone 13 and is radiated hydraulic pressure to be repaired
The outermost endpoint location 25 of 21 outer surface profile line of stent cylinder jack piston rod, such technological design, as it was noted above,
When welding wire 5 and 1 contact point of welding base metal are at the edge in molten bath 10, welding wire 5 is first fused into the molten drop 14 of drops, then water droplet
The molten drop 14 of shape is successfully flowed into molten bath 10, heating electric arc, molten bath 10, the welding wire 5 of welding gun heating zone 13 melt it is all very stable,
Solder deposition overlay cladding 9 is molded also more regular beauty.
The technique in operation, can also adjust welding gun heating zone 13 and be radiated oil cylinder of hydraulic support jack to be repaired
The region of 21 outer surface of piston rod and welding wire front end conveying heated filament section 2 are arrived along the axis projections of welding wire front end conveying heated filament section 2
The region of 21 outer surface of oil cylinder of hydraulic support jack piston rod to be repaired is simultaneously positioned at 30 ° ± 10 ° fan-shaped welding regions 20
It is interior, it can ensure that the front end of welding wire front end conveying heated filament section 2 always situated in adjustment welding gun heating zone 13, has been heated in this way
Welding wire front end conveying heated filament section 2 can smoothly be melted into the molten drop 14 of drops, can be formed with molten bath 10 steadily former
Son combines, and 9 compact structure of solder deposition overlay cladding, the dilution rate of the oil cylinder of hydraulic support jack piston rod 21 of reparation is low, weldering
Expect that the purity of deposition overlay cladding 9 is high, 21 corrosion resistance of oil cylinder of hydraulic support jack piston rod is strong.
In above-mentioned technique, realize that the two dissimilar material realizes deposition built-up welding welding, welding base metal oil cylinder of hydraulic support is very heavy
The chemical composition of top piston rod 21 and welding wire 5 is very different with performance, and the connecting welding requirement of base material identical with two kinds is complete
Difference, the connecting welding of two kinds of different base materials need to only weld together, and not may require that dilution rate is low, and the embodiment is different by the two
Kind material realizes that deposition built-up welding welds together, and does not require nothing more than the deposition built-up welding intensity of welding wire 5 and 21 surface of piston rod, also requires
Welding wire 5 is not diluted too much by base material oil cylinder of hydraulic support jack piston rod 21 as possible, exactly requires welding base metal hydraulic pressure branch
Few fusing of 21 outer surface of frame cylinder jack piston rod, the ingredient of 9 material of solder deposition overlay cladding of surface deposited metal built-up welding can
It is diluted or waters down with smaller, be experimentally verified that, dilution rate only has 10% or so, close to the level of plasma arc surfacing, base
Originally the most of ingredient and performance of austenitic stainless steel are remained, the corrosion protection performances of 316L give full play of, surface deposited metal
9 stainless property of the solder deposition overlay cladding enhancing of built-up welding,
In the embodiment, 21 a diameter of Φ 120mm of oil cylinder of hydraulic support jack piston rod to be repaired, length is
900mm, according to the rotation of following velocity interpolation piston rod 21 and the screw of welding gun 11, rotatable device rotation makes to be repaired
21 outer surface of oil cylinder of hydraulic support jack piston rod linear velocity for 300-400mm/min, hydraulic support to be repaired oil
21 per revolution of cylinder jack piston rod, welding gun 11 are 4-6mm along 21 outer surface of piston rod to be repaired longitudinal movement distance,
The spiral solder deposition overlay cladding 9 of complete densification is formed in 21 outer surface of piston rod to be repaired.
After the completion of the cladding built-up welding welding of 21 outer surface of oil cylinder of hydraulic support jack piston rod to be repaired, by outer surface
The soldered piston rod 21 of cladding built-up welding is removed, and cladding built-up welding soldered piston rod 21 in outer surface is erect placement,
It realizes natural cooling, erects and place natural cooling, 21 appearance of piston rod after the piston rod 21 after reparation can be made and repaired
Solder deposition 9 internal stress distributions of overlay cladding of face cladding built-up welding are uniformly indeformable, and metallization structure is fine and close, and mechanical property is excellent
It is good.
After cladding built-up welding soldered piston rod 21 in outer surface is cooled to room temperature, 21 surface of piston rod is added
Work, and reserved 0.3mm-0.5mm surpluses, then grinding is carried out to the size needed to 21 outer surface of piston rod, it is possible to it is real
Piston rod 21 after now repairing is installed and used.
In the embodiment, the cladding built-up welding throat thickness of 21 outer surface of oil cylinder of hydraulic support jack piston rod after reparation
For 2.0mm-2.5mm, cladding built-up welding throat thickness can also be adjusted as needed, it will to adapt to a variety of different specifications
It asks.
The welding base metal oil cylinder of hydraulic support jack piston rod 21 of the embodiment be alloy carbon steel material, solder deposition heap
Layer 9 be austenitic stainless steel or chromium nickel stainless steel material, 5 material of welding wire be austenitic stainless steel, specially Stainless steel 316 L
Material, 5 material of welding wire can also select chromium nickel stainless steel material, and specific 5 material of welding wire is HS316Lsi 316Lsi chromium nickel
Stainless steel, welding wire 5 a diameter of Φ 1.2mm ± 0.2mm, a diameter of Φ 3.2mm ± 0.2mm of tungsten electrode.
Such as the oil cylinder of hydraulic support jack piston rod that above device and technique make, including welding base metal 1 and according to upper
It states device and process cladding heap is soldered to the solder deposition overlay cladding 9 of welding base metal outer surface, the equipment and process letter
It is single, but inside the solder deposition overlay cladding 9 of the cladding built-up welding for 21 outer surface of oil cylinder of hydraulic support jack piston rod repaired
Stress distribution is uniform, corrosion resistance and good, strong shock resistance.Both it can be used for repairing the oil cylinder of hydraulic support thousand of tradition damage
Jin top piston rod 21, can also make new oil cylinder of hydraulic support jack piston rod 21, make new oil cylinder of hydraulic support thousand
During the piston rod 21 of jin top, save the process of exterior surface coating.
The manufacture craft is by the unilateral removal 0.5mm of 21 diameter of oil cylinder of hydraulic support jack piston rod to be repaired, is gone
Except original chrome layer, then with the solder deposition of the chromium nickel stainless steel material of the unilateral deposition built-up welding 2.0-2.5mm of process above
Overlay cladding 9 recycles ripe process for machining to be worked into the size of needs, generally that oil cylinder of hydraulic support to be repaired is very heavy
The outer surface for pushing up piston rod 21 retains the new oil cylinder of hydraulic support thousand of the overlay cladding 9 of 1mm or so, the technique reparation or making
Jin, which pushes up 9 pore-free of surfacing of piston rod layer and is mingled with, waits weld defects, the solder deposition overlay cladding 9 of the weld seam formation of deposition built-up welding
Quality is high.
In multiple oil cylinder of hydraulic support jack piston rods 21 of the embodiment reparation, a cladding built-up welding is randomly choosed
Piston rod 21 after reparation measures after being cut with wire cutting from 21 cross section of piston rod, and 21 outer surface of piston rod uniformly coats one
The chromium nickel stainless steel metal of layer thickness about 1mm, it is strong bonded together with welding base metal piston rod 21；It is smeared with acids corrosive liquid
Section, internal carbon steel metal occur fierce chemical reaction and with corrosions, outside the solder deposition overlay cladding 9 of chromium nickel stainless steel
Surface layer is reactionless, and still as before, it is very strong that this experiment shows that 9 outer layer of solder deposition overlay cladding of chromium nickel stainless steel has to light
Corrosion resistance.
With hand-held hardometer to cladding built-up welding and it is machined after the appearance surface hardness of piston rod 21 be tested,
Hardness number is HB350-380, and such hardness not only facilitates machining but also can effectively resist external force damage.It lives with electrodeposited chromium reparation
The technique of stopper rod 21 is compared, and the solder deposition overlay cladding 9 of the chromium nickel stainless steel of thickness is determined in 21 outer surface deposition built-up welding of piston rod,
The ability of anticorrosive, anti-external mechanical force damage can all greatly promote.Deposition built-up welding solder deposition overlay cladding 9 and base material piston rod
21 be metallurgical binding, will not fall off by external force effect, can effectively prevent corrosion.
Overlay case hardness HB350-380 resists the performance of external force damage also superior to chrome layer, straight after machining
Use is connect, chrome-plated process is eliminated, has fundamentally prevented environmental pollution, meets green remanufacturing theory, meanwhile, which can
Remanufactured with repeated multiple times implementation deposition built-up welding, can locally, entirety, thin layer, thick-layer carry out various reparations, tested by small lot
Card, more than 98% product first-time qualification rate, rehabilitation expense only have the 30% of original cost, and successfully solving gas shielded welding line has
The deficiency of defect.
Fig. 6 is the structure diagram of the oil cylinder of hydraulic support jack piston rod after repairing, it is clear that repairing in figure
Oil cylinder of hydraulic support jack piston rod after multiple, including welding base metal 8 and according to oil cylinder of hydraulic support jack described above
Piston rod cladding build-up welding apparatus cladding heap is soldered to the solder deposition overlay cladding 9 of welding base metal outer surface.
In conclusion heated filament argon arc welding technique is efficient, high quality, technology stability is good, and small investment is practical and convenient, comprehensive
It is cost-effective, there is promotional value.
The embodiment mainly introduces the technique for repairing oil cylinder of hydraulic support jack piston rod 21, when needs are according to the technique
When making new oil cylinder of hydraulic support jack piston rod 21, it is only necessary to save and oil cylinder of hydraulic support jack to be repaired is lived
The processing step of the chrome layer removal on stopper rod surface, remaining step are identical.
Only as described above, only specific embodiments of the present invention, when the model that the present invention cannot be limited with this implement
It encloses, therefore the displacement of its equivalent assemblies or the equivalent variations made according to scope of patent protection of the present invention and modification, it all should still belong to this hair
The scope that bright claims are covered.
Claims (10)
1. a kind of cylinder jack piston rod cladding build-up welding apparatus, it is characterized in that：Equipped with welding gun and welding gun energizing circuit, the weldering
Rifle front end is equipped with welding gun heating zone, and the welding gun energizing circuit includes welding gun excitation power source, the welding gun and welding gun energizing circuit
It is formed into a loop by welding base metal；
Welding wire conveying device and welding wire heater circuit are additionally provided with, the welding wire conveying device can realize the feeding of welding wire, described
Welding wire heater circuit includes welding wire heating power supply, and the welding wire conveying device front end is equipped with welding wire conduction regulating device, set on institute
It states welding wire of the welding wire conduction regulating device front end close to welding base metal side and conveys heated filament section, the welding wire heating for welding wire front end
Welding wire front end is conveyed heated filament section by welding wire conduction regulating device for circuit and welding base metal is formed into a loop, the welding wire conduction tune
Regulating device can adjust the length of welding wire front end conveying heated filament section, so as to which the welding wire front end conveying heated filament section be controlled to be heated to one
Constant temperature degree；
The welding gun central axes of the welding gun are overlapped with welding base metal vertical axis or welding gun central axes and welding base metal vertical axis
Inclination angle arrangement is formed between line；
The axis of the welding wire front end conveying heated filament section is parallel with welding base metal horizontal axis or welding wire front end conveys heated filament section
Axis and welding base metal horizontal axis between formed welding wire feeding angle；
The front end of the welding wire front end conveying heated filament section is located at the region of welding gun heating zone, is heated to the welding wire front end of certain temperature
The end of conveying heated filament section can form molten drop in welding gun heating zone part, and the welding gun heating zone can be by the outer of welding base metal
Surface is thermally formed molten bath, and the molten bath can adsorb the welding wire front end conveying heated filament section for being heated to certain temperature in welding gun heating
The molten drop that area part is formed, the molten drop form atom with molten bath and are combined, and the molten drop forms atom bound fraction with molten bath and melts
Cover the outer surface that heap is welded in welding base metal；
The welding base metal can be rotated with certain speed along welding base metal central axis, the welding gun and the conveying of welding wire front end
Heated filament section can form screw with welding base metal, and cladding heap is welded in the original that the molten drop of welding base metal outer surface is formed with molten bath
Sub- bound fraction can form in welding base metal outer surface and arrange close Spiral distribution.
A kind of 2. cylinder jack piston rod cladding build-up welding apparatus according to claim 1, which is characterized in that the welding
Base material is alloy carbon steel material, and the solder deposition overlay cladding is austenitic stainless steel material.
A kind of 3. cylinder jack piston rod cladding build-up welding apparatus according to claim 1, which is characterized in that the welding wire
The end of front end conveying heated filament section is located inside welding gun heating zone, the end of the welding wire front end conveying heated filament section and welding gun axis
The distance of line and welding base metal intersection point is 2mm-5mm.
A kind of 4. cylinder jack piston rod cladding build-up welding apparatus according to claim 1, which is characterized in that the welding wire
The end of front end conveying heated filament section is located at the outermost endpoint location that welding gun heating zone is radiated welding base metal outer surface profile line.
A kind of 5. cylinder jack piston rod cladding build-up welding apparatus according to claim 1, which is characterized in that the welding wire
The imaginary circles cylinder that the end of front end conveying heated filament section is located at using welding gun central axes direction as diameter 10mm ± 2mm of cylindrical wire is thrown
For shadow to the interior zone of welding base metal outer surface profile line, the distance of the welding gun front end and welding base metal is 10mm ± 3mm.
A kind of 6. cylinder jack piston rod cladding build-up welding apparatus according to claim 1, which is characterized in that the welding gun
Heating zone is radiated the region of welding base metal outer surface and welding wire front end conveying heated filament section conveys heated filament section along welding wire front end
The region of axis projections to welding base metal outer surface is located at the fan-shaped welding regions in 0 ° -45 ° of welding base metal vertical axis side simultaneously
It is interior.
A kind of 7. cylinder jack piston rod cladding build-up welding apparatus according to claim 1, which is characterized in that the welding gun
The welding gun inclination angle formed between central axes and welding base metal vertical axis is 5 ° ± 2 °.
A kind of 8. cylinder jack piston rod cladding build-up welding apparatus according to claim 1, which is characterized in that the welding wire
It is 5 ° ± 2 ° that front end, which conveys the welding wire feeding angle formed between the axis of heated filament section and welding base metal horizontal axis,.
9. a kind of jack piston rod, it is characterized in that：Including welding base metal and according to any hydraulic pressure of the claims 1-8
Stent cylinder jack piston rod cladding build-up welding apparatus cladding heap is soldered to the solder deposition overlay cladding of welding base metal outer surface.
10. a kind of jack piston rod according to claim 9, it is characterized in that：The welding base metal is alloy carbon steel material
Material, the solder deposition overlay cladding are austenitic stainless steel material.
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| CN201810182770.0A CN108176914B (en) | 2018-03-06 | 2018-03-06 | Oil cylinder jack piston rod cladding build-up welding device and jack piston rod |
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| CN201810182770.0A CN108176914B (en) | 2018-03-06 | 2018-03-06 | Oil cylinder jack piston rod cladding build-up welding device and jack piston rod |
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