CN104625448B - The processing method of a kind of tungsten carbide particle wearing layer structure and application - Google Patents
The processing method of a kind of tungsten carbide particle wearing layer structure and application Download PDFInfo
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- CN104625448B CN104625448B CN201410801812.6A CN201410801812A CN104625448B CN 104625448 B CN104625448 B CN 104625448B CN 201410801812 A CN201410801812 A CN 201410801812A CN 104625448 B CN104625448 B CN 104625448B
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- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 title claims abstract description 138
- 239000002245 particle Substances 0.000 title claims abstract description 122
- 238000003672 processing method Methods 0.000 title claims abstract description 24
- 238000003466 welding Methods 0.000 claims abstract description 135
- 230000001360 synchronised effect Effects 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 238000007711 solidification Methods 0.000 claims abstract description 4
- 230000008023 solidification Effects 0.000 claims abstract description 4
- 239000007921 spray Substances 0.000 claims abstract description 4
- 238000005065 mining Methods 0.000 claims description 18
- 238000005553 drilling Methods 0.000 claims description 17
- 239000011159 matrix material Substances 0.000 claims description 16
- 238000003801 milling Methods 0.000 claims description 11
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 238000005253 cladding Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 28
- 239000002994 raw material Substances 0.000 abstract description 5
- 239000008187 granular material Substances 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 83
- 229910045601 alloy Inorganic materials 0.000 description 14
- 239000000956 alloy Substances 0.000 description 14
- 238000010276 construction Methods 0.000 description 12
- 230000002093 peripheral effect Effects 0.000 description 9
- 229910052804 chromium Inorganic materials 0.000 description 5
- 239000011651 chromium Substances 0.000 description 5
- 239000003245 coal Substances 0.000 description 4
- 239000000945 filler Substances 0.000 description 4
- 229910000679 solder Inorganic materials 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- RSWGJHLUYNHPMX-ONCXSQPRSA-N abietic acid Chemical compound C([C@@H]12)CC(C(C)C)=CC1=CC[C@@H]1[C@]2(C)CCC[C@@]1(C)C(O)=O RSWGJHLUYNHPMX-ONCXSQPRSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 238000005275 alloying Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 230000005641 tunneling Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
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- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The present invention relates to a kind of tungsten carbide particle wearing layer structure and processing method thereof and application, with tungsten carbide coarse granule for raw material, adopt the mode of welding wire synchronous welding, when welding wire is while surface of the work welding forms welding pool, the nozzle on quantitative conveyer sprays tungsten carbide particle and enter into welding pool；During welding wire reach, molten bath cooling solidification below, tungsten carbide particle is wrapped in welding deposited metal, along with the movement in molten bath, the also synchronizing moving of the nozzle on quantitative conveyer, thus gradually forms the wearing layer comprising tungsten carbide particle.Adopt the tungsten carbide particle wearing layer that the method obtains; anti-wear performance is better; longer service life, can form better protection, and the method step is simple equipment; easily operated; efficiency is high, it is possible to obtain tungsten carbide particle wearing layer, applied range at short notice; can forming tungsten carbide particle wearing layer on multiple different equipment and workpiece, application limitation is little.
Description
Technical field
The present invention relates to a kind of tungsten carbide particle wearing layer structure and processing method thereof and application, belong to plant equipment wear-proof technique field.
Background technology
Tunnel is to build in underground or under water and the building for the dynamic vehicle pass-through of locomotive that places an iron railway.Mountain tunnel, submerged tunnel and city tunnel three major types can be divided into according to its position.The process of construction of roads and tunnels is mainly tunnel planning, exploration, design, the work tunnel excavation excavation methods such as through control measurement and construction are divided into cut and cover method and subsurface excavation method, the driving in tunnel is mainly completed by shield machine and TBM (TunnelBoringMachine) tunneler, it is utilize rotating tool to excavate, country rock and driving in broken hole simultaneously, the one forming whole tunnel cross-section is novel, advanced tunnel construction machinery, tunnel piercing is had vital impact by the anti-wear performance of Suporting structure and cutter and TBM equipment and cutter, the wear out failure of heading equipment and cutter has a strong impact on tunnel normal construction, strengthen construction cost；Mining machine is to ensure that the key equipment that coal normally produces, but equipment is aborning due to the wear out failure of mining cutter, causes that the replacing of mining cutter is frequent, brings economic loss to mining listed corporations；Rotary drilling rig and pavement milling machine are in ongoing operations process, the wear out failure of drilling tool and road-surface milling tooth, have a strong impact on construction period, cause the increase of construction cost, simultaneously some other plant equipment as the anti-wear performance of building block and affect service life of equipment.
Currently for the problems referred to above, mostly adopt the key position at machinery to set up high-chromium wear-resistant layer, increase the service life of plant equipment, but high-chromium wear-resistant layer is as common wearing layer, its anti-wear performance need to improve, and it still suffers from phenomenon easy to wear in work progress.In recent years, beginning with tungsten carbide and form wearing layer, utilize the high-wearing feature that tungsten carbide has in a lot of plant equipment, the tungsten carbide wear resistant layer formed on the work surface of plant equipment can protect plant equipment, the service life of prolonged mechanical equipment well.
Chinese patent literature CN202579581U discloses a kind of thrust bearing for magnetic pumps, and in cannelure on the bearing, heap is welded with tungsten carbide wear resistant layer, by utilizing tungsten carbide filler rod directly Tungsten Carbide Surfacing wearing layer in the cannelure of loop substrate.The tungsten carbide wear resistant layer that the method is formed is connected reliably with loop substrate, does not have the phenomenon that gets loose.But the method needs to use tungsten carbide filler rod, and the tungsten carbide size in tungsten carbide filler rod is all much smaller than 1mm, it is impossible to realize the preparation of coarse granule tungsten carbide particle wearing layer, and the content of tungsten carbide is certain, it is impossible to be adjusted as required.
Chinese patent literature CN101016826B provides bit body of a kind of diamond bit and preparation method thereof, the method is by cladded wolfram carbide wearing layer outside bone core, tungsten carbide wear resistant layer has binding metal to form through high temperature melting infiltration sintering through oversintering, and is sintered to one by steel core.The tungsten carbide wear resistant layer complex technical process that the method obtains, requires higher to each technological parameter in technical process, and the tungsten carbide powder used needs through multiple tracks processing step, and the method cannot be applied to multiple different occasion.
For Problems existing in current existing wearing layer processing method, we adopt novel wear-proof technique, in the way of tungsten carbide coarse granule with welding wire synchronous welding, tungsten carbide particle and welding wire synchronous welding is allowed to form a kind of novel wear resistant layer, the application of this novel wear resistant layer, the anti-wear performance of equipment and cutter can be greatly improved, it is ensured that above-mentioned all kinds of constructions properly functioning also saves construction cost.
Summary of the invention
For the deficiencies in the prior art, the present invention provides a kind of with tungsten carbide coarse granule for raw material, adopts the tungsten carbide particle wearing layer structure that the mode with welding wire synchronous welding obtains.
The present invention also provides for the processing method of a kind of above-mentioned tungsten carbide particle wearing layer structure.
Technical scheme is as follows:
A kind of tungsten carbide particle wearing layer structure, including metallic matrix and tungsten carbide particle, it is melted in surface of the work formation welding pool by welding and obtains described metallic matrix, in welding pool, inject described tungsten carbide particle by the mode of synchronous welding, described tungsten carbide particle cladding is arranged in metallic matrix.
Preferably, described metallic matrix is be melted in surface of the work by the welding of middle low carbon steel welding wire to form the metallic matrix that welding pool obtains.
It is further preferred that the middle low carbon steel welding wire that described middle low carbon steel welding wire is φ 0.5mm-φ 4mm.
Preferably, described tungsten carbide particle to be purity be 80-97%, particle diameter are the tungsten carbide particle of 0.5-5mm.
A kind of processing method of tungsten carbide particle wearing layer structure, as follows including step,
(1) taking purity be 80-97%, particle diameter is the tungsten carbide particle of 0.5-5mm, standby；
(2) the middle low carbon steel welding wire of φ 0.5mm-φ 4mm is taken, standby；
(3) the middle low carbon steel welding wire in step (2) is welded on the work surface of workpiece to be processed with the translational speed of 25-80cm/min, when welding wire is while surface of the work built-up welding forms welding pool, by the nozzle on quantitative conveyer with 100-1000mm3The speed ejection tungsten carbide particle of/min enters into welding pool；When welding wire moves forward, molten bath cooling solidification below, is wrapped in tungsten carbide particle in welding deposited metal, along with the movement in molten bath, nozzle on quantitative conveyer also moves with the speed sync same with welding gun, thus gradually forms the wearing layer comprising tungsten carbide particle.
Preferably, in step (3), welding gun is used under weldingvoltage 25-45V, welding wire to be melted.The advantage of this design is in that, the welding wire melted effect under this weldingvoltage is best, and the bath temperature of formation is high, and tungsten carbide particle can tightly be wrapped up by molten bath, and the parcel of tungsten carbide particle is good, the tungsten carbide wear resistant layer longer service life being consequently formed.
Preferably, the work surface of Suporting structure and shield cutter arranges tungsten carbide particle wearing layer.
Preferably, the work surface of TBM equipment and TBM cutter arranges tungsten carbide particle wearing layer.
Preferably, the work surface of mining machine and mining cutter arranges tungsten carbide particle wearing layer.
Preferably, the work surface of rotary drilling rig drilling tool arranges tungsten carbide particle wearing layer.
Preferably, the work surface of pavement milling machine and road milling cutter arranges tungsten carbide particle wearing layer.
Preferably, the work surface of power shovel and bucket tooth arranges tungsten carbide particle wearing layer.
Preferably, the work surface of bull-dozer scraper bowl and bucket tooth arranges tungsten carbide particle wearing layer.
The beneficial effects of the present invention is:
1. the processing method of tungsten carbide particle wearing layer of the present invention, with tungsten carbide particle for raw material, the mode adopting welding wire synchronous welding welds formation tungsten carbide particle wearing layer on various equipment and cutter, the method is different from traditional welded or the mode of in-situ sintering obtains the way of tungsten carbide wear resistant layer at equipment work surface by tungsten carbide filler rod, provides new way for forming wearing layer on equipment.
2. the processing method of tungsten carbide particle wearing layer of the present invention, construction does not need the expensive investments of laser equipment, only needs common welding machine in conjunction with quantitative feed equipment, and boundary of works area is wide, it is little to limit, construction cost is substantially reduced, and monolayer molding thickness relatively laser melts coating method and is greatly increased.
3. the tungsten carbide wear resistant layer that the tungsten carbide particle wearing layer that obtained by the inventive method is more traditional, its anti-wear performance is better, and equipment can be formed better protection by longer service life.
4. the inventive method step is simple, it is easy to operation, and efficiency is high, it is possible to obtain tungsten carbide particle wearing layer and the method applied range at short notice, easy and simple to handle, it is possible to forming this tungsten carbide particle wearing layer on multiple different equipment and workpiece, limitation is little.
Accompanying drawing explanation
Fig. 1 is the structural representation of shield cutter welding tungsten carbide particle wearing layer in embodiment 3；
Fig. 2 is the sectional view along line A-A in Fig. 1；
Fig. 3 is the structural representation of TBM cutter tunneling boring welding tungsten carbide particle wearing layer in embodiment 4；
Fig. 4 is the structural representation of TBM cutter cutter ring welding tungsten carbide particle wearing layer in embodiment 4；
Fig. 5 is the structural representation of TBM cutter cutter hub welding tungsten carbide particle wearing layer in embodiment 4；
Fig. 6 is the structural representation of mining Welding of cutters tungsten carbide particle wearing layer in embodiment 5；
Fig. 7 is the structural representation of mining Welding of cutters tungsten carbide particle wearing layer in embodiment 5；
Wherein: 1,2,3,4,5,6,7,8,9,10 be tungsten carbide particle wearing layer.
Detailed description of the invention
The present invention will be further described by the examples below and in conjunction with accompanying drawing, but is not limited to this.
Embodiment 1:
The processing method of a kind of wearing layer provided by the invention, with tungsten carbide particle for raw material, including step,
(1) take purity be 97%, particle diameter 5mm tungsten carbide particle, tungsten carbide particle is encased in quantitative conveyer, for future use；
(2) the middle low carbon steel welding wire of φ 0.5mm is loaded welding equipment, use welding gun to prepare welding；
(3) welding gun is used to be welded on the work surface of workpiece to be processed by welding wire with the speed of 80cm/min under weldingvoltage 45V, when welding wire is while surface of the work built-up welding forms welding pool, by the nozzle on quantitative conveyer with 100mm3/ min sprays tungsten carbide particle and enters into welding pool；When welding wire moves forward, molten bath cooling solidification below, is wrapped in tungsten carbide particle in welding deposited metal, along with the movement in molten bath, the speed sync that nozzle on quantitative conveyer also moves with the speed sync same with welding gun moves, and thus gradually forms the wearing layer comprising tungsten carbide particle.
By the coarse grained wearing layer of change tungsten that the method obtains, the wearing layer hardness that relatively previous methods obtains is high, wearability is good, long service life.
Common high-chromium wear-resistant layer hardness is about HRC60, and tungsten carbide particle hardness is up to more than HRC70 (HRA86.5), and therefore tungsten carbide particle is compared with common high-chromium wear-resistant layer and had high wearability, but pure WC poor toughness, be hit easy fragmentation.The high-wearing feature of present invention tungsten carbide particle just is set out, and wraps up the fabulous tungsten carbide particle of wearability with the good metal of toughness and forms the fabulous and impact-resistant tungsten carbide particle wearing layer of wearability.
When tungsten carbide particle wearing layer is subject to rubbing, tungsten carbide particle in tungsten carbide particle wearing layer contacts with rubber, and melting metallisation can wear and tear along with the abrasion of tungsten carbide particle, owing to tungsten carbide particle hardness is high, wearability is good, and the wearability that therefore wearing layer is overall is greatly improved.
According to anti-wear performance contrast test, tungsten carbide particle wearing layer is 3～5 times of high-chromium wear-resistant layer anti-wear performance；According to the proof test in building site, Sichuan, tungsten carbide particle wearing layer cutting-gear life reaches more than 2 times of common wearing layer pick.
Utilize the tungsten carbide particle wearing layer structure that the method obtains, including metallic matrix and tungsten carbide particle, it is melted in surface of the work formation welding pool by welding and obtains described metallic matrix, in welding pool, inject described tungsten carbide particle by the mode of synchronous welding, described tungsten carbide particle cladding is arranged in metallic matrix.The thickness of the tungsten carbide particle wearing layer obtained is 15mm.
Embodiment 2:
The processing method of a kind of wearing layer provided by the invention, as described in Example 1, it is different in that its method step, step (1) takes purity be 80%, particle diameter 0.5mm tungsten carbide particle be raw material；Step (2) is selected the middle low carbon steel welding wire of φ 4mm weld；In step (3), welding wire is welded with the speed of 25cm/min by welding gun under weldingvoltage 25V, and nozzle is with 1000mm3/ min sprays tungsten carbide particle and enters into welding pool.
Utilize the tungsten carbide particle wearing layer structure that the method obtains, including metallic matrix and tungsten carbide particle, it is melted in surface of the work formation welding pool by welding and obtains described metallic matrix, in welding pool, inject described tungsten carbide particle by the mode of synchronous welding, described tungsten carbide particle cladding is arranged in metallic matrix.The thickness of the tungsten carbide particle wearing layer obtained is 2mm.
Embodiment 3:
The processing method described in embodiment 1 is utilized to weld tungsten carbide particle wearing layer on Suporting structure and shield cutter；Suporting structure mainly includes board wheel and spoke wheel, the tungsten carbide particle welding of wear-resisting layers position of described board wheel is panel work surface and face plate edge arc position, and the welding position of described spoke wheel is on spoke work surface and spoke edge arc surface；
Shield cutter mainly includes dual-pilot cutter, mytiliform cutter, center cutter, imitation-shaped knife and scum board, welding on described dual-pilot cutter, the alloy that welding position is dual-pilot cutter cutter hub is peripheral, main solder side is peripheral at the top surface alloy of all around four faces and the dual-pilot cutter cutter hub of dual-pilot cutter cutter hub, takes the mode of tungsten carbide particle and welding wire synchronous welding；Welding on described mytiliform cutter, the alloy that the position of welding is mytiliform cutter cutter hub is peripheral, and including the position, gap between alloy, and the top surface alloy of all around four work surfaces and the cutter hub of mytiliform cutter cutter hub is peripheral；Welding on described center cutter, centered by the position of welding on cutter cutter hub, peripheral including center cutter alloy, and on the groundwork face of center cutter；Welding on described imitation-shaped knife, according to imitation-shaped knife installation site on shield machine, imitation-shaped knife is mostly installed at the marginal position of cutterhead, is on the cutter hub front end face of imitation-shaped knife according to real work situation tungsten carbide particle welding of wear-resisting layers position；Welding on described scum board, including being welded on front scum board and rear scum board.
In welding process, tungsten carbide particle and welding wire synchronous welding are on the surface of Suporting structure and cutter; Suporting structure and cutter are formed wear-resistant protection; Suporting structure main body had both been formed and had protected well by such welding manner; add the anti-wear performance of shield cutter simultaneously; improve the service life of shield cutter; decrease replacing number of times and the cutterhead maintenance frequency of shield cutter in tunneling process, save construction cost.
Embodiment 4:
The processing method described in embodiment 1 is utilized to weld tungsten carbide particle wearing layer on TBM equipment and TBM cutter；The welding on TBM equipment of the tungsten carbide particle wearing layer, welding position is on the spoke of TBM cutterhead and cutterhead edge arc surface；
Tungsten carbide particle welding on TBM cutter, is mainly welded on flange-type hob, insert cutter, middle tooth cutter, knife rest and girff.The wherein welding on TBM cutter flange-type hob, mainly for single-blade hob, double-edged hobbing cutter, duplex hobboing cutter, welding position is the cutter ring blade both sides of single-blade hob and double-edged hobbing cutter, namely alloy is peripheral, the welding position of duplex hobboing cutter is in the both sides of cutter ring blade, namely alloy is peripheral, and on the preposition arcwall face of middle frame, on the cutter hub of flange-type hob, it being also adopted by this welding manner simultaneously, the position of welding is mainly the two ends, left and right of cutter hub, full arc face can be welded, it is also possible to be welded as strip wing wearing layer；Welding on insert cutter, the both sides that position is cutter ring blade of main welding, i.e. in the left and right both ends of the surface of the periphery of button alloy, and insert cutter conductor, it is possible to full arc face is welded, it is also possible to be welded as strip wing wearing layer；Welding on middle tooth cutter, main welding position is the two ends, cutter hub left and right of middle tooth cutter, it is possible to full arc face is welded, it is also possible to be welded as strip wing wearing layer, be distributed on the whole end face of cutter hub；The welding position of the welding on TBM knife rest and girff, knife rest and girff is faced directly before being mainly, towards the side of work surface.
TBM takes such synchronous welding mode; first TBM cutterhead is formed good protection; avoid the abrasion of shield cutter; TBM cutter is formed protection simultaneously; especially this protected mode to TBM cutter cutter hub Yu cutter ring; cutting-tool's used life can be improved largely, be effectively prevented from cutter because of the generation of the tool failure phenomenon brought easy to wear.
Embodiment 5:
The processing method described in embodiment 1 is utilized to weld tungsten carbide particle wearing layer on mining machine and mining cutter；The welding on mining machine and mining cutter of the tungsten carbide particle wearing layer, mainly it is welded on the cylinder barrel work surface of flitting, coal plough, continuous miner, cut coal-winning machine, auger, improves coal-winning machine in the anti-wear performance of coal mining process intermediate roll and service life；
Welding on mining cutter, main brazed shank tool is flat bit and conical pick, wherein the solder side of flat bit is on periphery, the alloy hole conical surface of master alloying body and the face, left and right of flat bit, the solder side of conical pick is periphery, the alloy hole conical surface of master alloying, enhance the anti-wear performance of mining pick, improve mining pick slicing coal efficiency.
Embodiment 6:
The processing method described in embodiment 1 is utilized to weld tungsten carbide particle wearing layer on rotary drilling rig drilling tool；The welding on rotary drilling rig drilling tool of the tungsten carbide particle wearing layer; mainly for welding of rotary drilling digger and augers; the welding position of rotary drilling digger is on the barrel of drilling bucket; the welding of augers is mainly welded on the blade surface of helical blade; welding on rotary drilling rig drilling tool; in the drilling tool alloy peripheral surface mainly for drag bit and bit leg face and bucket tooth, drilling tool is formed protection.
Embodiment 7:
The processing method described in embodiment 1 is utilized to weld tungsten carbide particle wearing layer on pavement milling machine and road milling cutter；The welding on pavement milling machine of the tungsten carbide particle wearing layer, main welding position is the welding on the cylinder watt seat of milling and planing drum on road milling cutter, mainly being welded on road surface cement tooth, Colophonium tooth, wherein cement tooth in road surface is arranged on the peripheral conical surface in alloy hole of tooth head alloy with the solder side of Colophonium tooth.
Embodiment 8:
The processing method described in embodiment 1 is utilized to weld tungsten carbide particle wearing layer on power shovel and bucket tooth；Tungsten carbide particle wearing layer is in the welding of power shovel and bucket tooth, and the main positions of welding is that on the bucket lip of excavator and leading face, the welding position of bucket tooth is mainly disposed to bucket tooth tooth head position.
Embodiment 9:
The processing method described in embodiment 1 is utilized to weld tungsten carbide particle wearing layer on bull-dozer scraper bowl and bucket tooth；Tungsten carbide particle wearing layer is in the welding of bull-dozer scraper bowl and bucket tooth, and the main positions of welding is that on the bucket lip of bull-dozer and leading face, the welding position of bucket tooth is mainly disposed to bucket tooth tooth head position.
Claims (6)
1. the processing method of a tungsten carbide particle wearing layer structure, described tungsten carbide particle wearing layer structure includes metallic matrix and tungsten carbide particle, it is melted in surface of the work formation welding pool by welding and obtains described metallic matrix, in welding pool, inject described tungsten carbide particle by the mode of synchronous welding, described tungsten carbide particle cladding is arranged in metallic matrix；Described metallic matrix is be melted in surface of the work by the welding of middle low carbon steel welding wire to form the metallic matrix that welding pool obtains；It is characterized in that, as follows including step,
(1) taking purity be 80-97%, particle diameter is the tungsten carbide particle of 0.5-5mm, standby；
(2) the middle low carbon steel welding wire of φ 0.5mm-φ 4mm is taken, standby；
(3) the middle low carbon steel welding wire in step (2) is welded on the work surface of workpiece to be processed with the translational speed of 25-80cm/min, when welding wire is while surface of the work built-up welding forms welding pool, the nozzle on quantitative conveyer spray tungsten carbide particle with the speed of 100-1000mm3/min and enter into welding pool；When welding wire moves forward, molten bath cooling solidification below, is wrapped in tungsten carbide particle in welding deposited metal, along with the movement in molten bath, nozzle on quantitative conveyer also moves with the speed sync same with welding gun, thus gradually forms the wearing layer comprising tungsten carbide particle.
2. the processing method of tungsten carbide particle wearing layer structure as claimed in claim 1, it is characterised in that in step (3), uses welding gun under weldingvoltage 25-45V, welding wire to be melted.
3. the application of the processing method of tungsten carbide particle wearing layer structure as claimed in claim 1, it is characterised in that tungsten carbide particle wearing layer is set on the work surface of Suporting structure and shield cutter.
4. the application of the processing method of tungsten carbide particle wearing layer structure as claimed in claim 1, it is characterised in that tungsten carbide particle wearing layer is set on the work surface of TBM equipment and TBM cutter.
5. the application of the processing method of tungsten carbide particle wearing layer structure as claimed in claim 1, it is characterised in that tungsten carbide particle wearing layer is set on the work surface of mining machine and mining cutter.
6. the application of the processing method of tungsten carbide particle wearing layer structure as claimed in claim 1, it is characterised in that tungsten carbide particle wearing layer is set on the work surface of rotary drilling rig drilling tool；The work surface of pavement milling machine and road milling cutter arranges tungsten carbide particle wearing layer；The work surface of power shovel and bucket tooth arranges tungsten carbide particle wearing layer；The work surface of bull-dozer scraper bowl and bucket tooth arranges tungsten carbide particle wearing layer.
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| CN106975861B (en) * | 2016-01-19 | 2019-07-12 | 姜文辉 | A kind of hard material of tungsten carbide particle and preparation method thereof containing clad |
| CN107088693A (en) * | 2016-08-08 | 2017-08-25 | 温州宝通机械制造有限公司 | A kind of alloying pellet bead-welding technology |
| CN107447214A (en) * | 2017-08-11 | 2017-12-08 | 江苏中科大港激光科技有限公司 | A kind of laser diffusion alloy method of rotary digging tooth denticle surface peening |
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| JPH04116382A (en) * | 1990-09-07 | 1992-04-16 | Konica Corp | Heating furnace |
| CN1081403A (en) * | 1992-07-16 | 1994-02-02 | 机械电子工业部哈尔滨焊接研究所 | The anti wearing block with cladded abrasion-resistant metal layer manufacture method |
| CN101338428A (en) * | 2008-08-07 | 2009-01-07 | 沈阳大陆激光成套设备有限公司 | Strengthen process for pick head by laser fusing and coating wear-resistant coating |
| CN103273168B (en) * | 2013-04-25 | 2015-06-03 | 常州富通焊业有限公司 | Tungsten carbide suspended bead welding method and device |
| CN103670430B (en) * | 2013-11-29 | 2016-01-20 | 北京交通大学 | Improving one's methods of a kind of shield cutter |
| CN103737273B (en) * | 2013-12-31 | 2015-12-30 | 武汉团结点金激光科技有限公司 | A kind of manufacture craft of New Kind of Hob of laser melting coating WC wear-resistant coating |
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