CN104759724B - Welding method for heating and connecting over-length hard alloy by using laser - Google Patents
Welding method for heating and connecting over-length hard alloy by using laser Download PDFInfo
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- CN104759724B CN104759724B CN201510227429.9A CN201510227429A CN104759724B CN 104759724 B CN104759724 B CN 104759724B CN 201510227429 A CN201510227429 A CN 201510227429A CN 104759724 B CN104759724 B CN 104759724B
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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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/005—Soldering by means of radiant energy
- B23K1/0056—Soldering by means of radiant energy soldering by means of beams, e.g. lasers, E.B.
-
- 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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/19—Soldering, e.g. brazing, or unsoldering taking account of the properties of the materials to be soldered
-
- 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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/20—Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
Abstract
The invention relates to a welding method for heating and connecting over-length hard alloy by using a laser. The welding method for heating and connecting the over-length hard alloy by using the laser comprises the following steps that firstly, 200-mesh alloy powder and compound powder ranging from 20 meshes to 30 meshes are selected as filling metal, the alloy powder comprises Cu powder, Zn powder, Ni powder, Co powder, Cr powder, B powder, Fe powder and W powder, the compound powder is WC powder, and a mass fraction of the WC particles ranges from 0.1% to 10%; secondly, a ball-milling ball, the WC particles and the alloy powder are put in a ball milling machine, and even mixing is carried out; thirdly, a groove with a dip angle ranging from 1 degree to 5 degrees is cut in the welding face of the hard alloy; fourthly, after the welding face of the hard alloy is polished, cleaned and dried, abrasive blasting and coating are carried out; fifthly, polishing and cleaning are carried out on a Ni piece and a Co piece which range from 0.1 mm to 0.2 mm, coinciding and assembling are carried out according to the sequence of Ni/Co/Ni, and an interlayer is formed; sixthly, clamping is carried out on coated hard alloy, the interlayer is fixed between the two hard alloy, and laser heating is carried out. According to the method, the residual stress of the hard alloy and hard alloy welding connectors can be notably lowered, and the weld strength is high.
Description
Technical field
The present invention relates to the solder technology between hard alloy and hard alloy and in particular to be connected super using LASER HEATING
The welding method of long hard alloy.
Background technology
With the progress of timber industry technology, various composite wooden materials, thick china, wood, bamboo wood, especially trimerization
The materials such as cyanamide impregnated paper veneer plate, pvc thick china are increasingly being used for furniture, floor, roof boarding and engineering ligneous piece etc..
But these timber need layered cutting to process, and the cutting process of routine, simple cutter structure and common cutter material are difficult
To be competent at or machining cannot be realized at all.Hard alloy cutter has cutting speed soon, high in machining efficiency, anti-wear performance
Good, the advantage of long service life, have become as the first-selected cutter of timber industry processing.Because it processes the original size of wood materials
All larger, corresponding process tool size is also elongated therewith.But hard alloy is with refractory metal compound as matrix, with mistake
Crossing race's metal is Binder Phase, the cermet tool material prepared by powder metallurgy process, and this preparation method limits
The more difficult Hardmetal materials producing long size, in order to obtain long size (more than 2 meters) hard alloy cutter it is necessary to use welding
Technology realizes being reliably connected between hard alloy and hard alloy.
Welding with regard to hard alloy and hard alloy is primarily present two problems, becomes restriction overlength hard alloy welding
Bottleneck.This two problems are respectively: the selection of one packing material.If selecting common packing material, its material is closed with hard
Metallographic is often mutually more far short of what is expected than hardness, wearability, and packing material can wear and tear first at work, so can process wooden material at it
Material leaves convex epirelief, the quality of impact product above, and product can be made when serious cannot to use；Its two packing material and hard alloy this
There is very big difference in the thermal coefficient of expansion of bi-material, this can lead to produce larger residual stress in welding process, make
Become hard alloy welding point position gross distortion, in follow-up wood materials processing, may result in hard alloy cutter welding
Crackle first up to last fragmentation in joint.
Laser as a kind of new welding heat source, have that firing rate is fast, heat affected area is narrow, post welding distortion and remaining should
The features such as power is little, particularly in terms of weakening the embrittlement of joint fusion area, has the advantages that uniqueness, and this makes it possible to be applied to firmly
Matter alloy and the welding of hard alloy.According to pertinent literature, " deep penetration welding " and " thermal conductivity weldering " pattern of laser can be taken to carry out
Hard alloy and the soldering of steel, this method can make solder in instantaneously interior abundant fusing, to infiltrate hard alloy, again can be by hard
Alloy substrate is heated to higher temperature and will not melt so as to can preferably be soaked by liquid solder, forms soldering and connects
Head.But only have studied the welding of hard alloy and steel in pertinent literature, and the welding difficulty of hard alloy and hard alloy is relatively
Greatly, with high content of technology, so the solder technology in the long size hard alloy of this high-quality of China and hard alloy still belongs to blank,
Abroad there is no the substantial report of this respect so far yet.
Content of the invention
It is an object of the invention to provide connect the welding method of overlength hard alloy, this use laser using LASER HEATING
The welding method that heating connects overlength hard alloy is welded into asking of super long workpiece for solving hard alloy with hard alloy
Topic.
The technical solution adopted for the present invention to solve the technical problems is: this use LASER HEATING connects overlength hard and closes
The welding method of gold is as follows:
First, packing material is prepared:
Choose 200 mesh alloy powders and 20 ~ 30 mesh compound powders by mass fraction as filling metal, alloy powder bag
Include cu powder, zn powder, ni powder, co powder, cr powder, b powder, fe powder, w powder, compound powder is wc particle, with
The gross mass meter of alloy powder and wc particle, the mass fraction of wc particle is 0.1% ~ 10%；
2nd, packing material alloying:
The wc particle weighing in ball milling ball, step one is put into planetary ball mill together with the alloy powder weighing in step one
In machine, packing material powder is mixed with wc particle, ball milling bulb diameter is 2 ~ 10mm, ball material mass ratio is 9:1 ~ 14:1, OK
Celestial body grinding machine is filled with argon gas after vacuumizing, and then with rotating speed for 50 ~ 400r/min batch (-type) ball milling 4 ~ 22h, ball mill is every 6 ~
11min changes a rotation direction, and every ball milling 2 ~ 5h rests 0.6 ~ 1.1h；
3rd, hard alloy processing:
When hard alloy prepares, first hard alloy solder side is cut out the groove at about 1 ~ 5 ° of inclination angle with wire cutting, and polish
Remove cutter trade；
4th, surface recombination:
Hard alloy solder side after step 3 is processed after cleaning with sand papering, with acetone, being dried, using 24 mesh
Corundum sand carries out blasting treatment；Then sprayed, sprayed on material powder morphology is spherical in shape or subsphaeroidal, particle size range is 44
~ 105 μm, spraying parameter is: voltage 30 ~ 60v, electric current 200 ~ 500a, argon flow amount 30 ~ 45l/min, powder sending quantity 1 ~
2.5kg/h, spray distance 80 ~ 120mm, about 200 ~ 900 μm of spray layer thickness；It is heat-treated in holding furnace after spraying, its
Middle heat treatment parameter is: 200 ~ 700 DEG C of insulation 0.6 ~ 1h, air cooling；
5th, intermediate layer preparation:
Using sand paper, the thick ni piece of 0.1 ~ 0.2mm and co piece are polished, and after cleaning-drying, according to ni/co/ni's
Order carries out overlapping assembling, forms the intermediate layer of sandwich formats；
6th, welding process:
The hard alloy that step 4 has been sprayed carries out clamping, and intermediate layer prepared by step 5 is fixed on two hard
In the middle of alloy, subsequently carry out LASER HEATING, wherein packing material will be dried, and then scrapes suction powder feeder and four by balancing point
Cellular type coaxial powder-feeding nozzle is realized coaxially sending packing material, and laser welding process is: laser power is 3 ~ 6kw, and spot diameter 1 ~
1.5mm, defocusing amount is 1 ~ 8mm, and bonding speed is 10 ~ 25mm/s, and protective gas is helium, and gas flow is 32l/min.
The consisting of of alloy powder in such scheme: in terms of the gross mass of alloy powder and wc particle, alloy powder is by pressing
Mass fraction be 10% ~ 60%cu powder, 10% ~ 40%zn powder, 1% ~ 70%ni powder, 1% ~ 10%co powder, 1% ~
10%cr powder, 0.1% ~ 10%b powder, 0.1% ~ 10%fe powder, 1% ~ 20%w powder constituent.
In such scheme, sprayed on material by by mass fraction is: 15% ~ 20%cr, 3.0% ~ 4.5%b, 3.5% ~ 5.5%
Si, 0.5% ~ 1.1%c, 0.5% ~ 5.0%fe, the ni composition of surplus.
The method have the advantages that
First, in the present invention, intermediate layer and packing material use cooperatively and can significantly reduce hard alloy and hard alloy welding
The residual stress of joint, improves weld strength, improves the performance of whole hard alloy component.
2nd, wc enhancing can be full and uniform with brazing filler metal alloy powder in mechanical milling process for the packing material of present invention preparation
Mixing.
3rd, the present invention directly can obtain the enhanced composite weld of wc particle in welding, and the remnants of joint also can be made to answer
Power is remarkably decreased.
Brief description
Fig. 1 is the schematic diagram of the present invention.
In figure: 1. hard alloy, 2. sprayed coating, 3. packing material, 4. laser beam, 5. fixture.
Specific embodiment
The present invention is further illustrated below:
Embodiment 1:
The welding method that this use LASER HEATING connects overlength hard alloy is as follows:
First, packing material is prepared:
Choose 200 mesh alloy powders and 20 mesh compound powders by mass fraction as filling metal, its alloy powder bag
Include cu powder, zn powder, ni powder, co powder, cr powder, b powder, fe powder, w powder, compound powder is wc particle；Press
Mass fraction weigh 10%cu powder, 40%zn powder, 10%ni powder, 1%co powder, 1%cr powder, 7.9%b powder,
10%fe powder, 20%w powder, and 0.1%wc particle.
2nd, packing material alloying:
The wc particle weighing in ball milling ball, step one is put into planetary ball mill together with the alloy powder weighing in step one
In machine, packing material powder is mixed with wc particle, ball milling bulb diameter is 2mm, ball material mass ratio is 9:1, planetary ball mill
It is filled with argon gas after vacuumizing, then with rotating speed for 50r/min batch (-type) ball milling 4h, ball mill every 6min conversion once rotation side
Rest 0.6h to, every ball milling 2h；In the present invention, ball material mass ratio is to weigh in the wc particle and step one weighing in step one
The quality sum of both alloy powders and the ratio of ball mill ball quality.
3rd, hard alloy processing:
When hard alloy prepares, first hard alloy solder side is cut out the groove at about 1 ~ 5 ° of inclination angle with wire cutting, and polish
Remove cutter trade.
4th, surface recombination:
Hard alloy solder side after step 3 is processed after cleaning with sand papering, with acetone, being dried, using 24 mesh
Corundum sand carries out blasting treatment；Then sprayed, sprayed on material by by mass fraction is: 15%cr, 3.0%b, 5.5%
Si, 0.8%c, 0.7%fe, the ni composition of surplus, powder morphology is spherical in shape or subsphaeroidal, and particle size range is 44 μm, spraying coating process
Parameter is: voltage 30v, electric current 200a, argon flow amount 30l/min, powder sending quantity 1kg/h, spray distance 80mm, and spray layer thickness is about
200μm；It is heat-treated in holding furnace after spraying, wherein heat treatment parameter is: 200 DEG C of insulation 0.6h, air cooling.
5th, intermediate layer preparation:
Using sand paper, the thick ni piece of 0.1mm and co piece are polished, and after cleaning-drying, according to the order of ni/co/ni
Carry out overlapping assembling, form the intermediate layer of sandwich formats.
6th, welding process:
As shown in figure 1, the hard alloy having sprayed step 4 carries out clamping, by the spraying after two hard alloy sprayings
Layer 2 corresponding placement, are clamped with fixture 5, and intermediate layer prepared by step 5 are fixed in the middle of two hard alloy 1, middle
Layer is the white portion between two sprayed coatings in Fig. 1, subsequently carries out LASER HEATING, wherein packing material will be dried, so
Afterwards suction powder feeder is scraped by balancing point and four cellular type coaxial powder-feeding nozzles are realized coaxially sending packing material, laser beam 4 passes through filling
Material 3 enters into and carries out LASER HEATING between two hard alloy, and laser welding process is: laser power is 3kw, spot diameter
1mm, defocusing amount is 3mm, and bonding speed is 10mm/s, and protective gas is helium, and gas flow is 32l/min.
Embodiment 2:
The welding method that this use LASER HEATING connects overlength hard alloy is as follows:
First, packing material is prepared:
Choose 200 mesh alloy powders and 30 mesh compound powders by mass fraction as filling metal, its alloy powder bag
Include cu powder, zn powder, ni powder, co powder, cr powder, b powder, fe powder, w powder, compound powder is wc particle；Press
Mass fraction weigh 58%cu powder, 10%zn powder, %ni powder, 8%8co powder, 9%cr powder, 0.1%b powder,
0.9%fe powder, 1%w powder, and 8%wc particle.
2nd, packing material alloying:
The wc particle weighing in ball milling ball, step one is put into planetary ball mill together with the alloy powder weighing in step one
In machine, packing material powder is mixed with wc particle, ball milling bulb diameter is 8mm, ball material mass ratio is 12:1, planetary ball mill
It is filled with argon gas after vacuumizing, then with rotating speed for 200r/min batch (-type) ball milling 18h, ball mill every 8min conversion once rotation side
Rest 0.9h to, every ball milling 3h.
3rd, hard alloy processing:
When hard alloy prepares, first hard alloy solder side is cut out the groove at about 1 ~ 5 ° of inclination angle with wire cutting, and polish
Remove cutter trade.
4th, surface recombination:
Hard alloy solder side after step 3 is processed after cleaning with sand papering, with acetone, being dried, using 24 mesh
Corundum sand carries out blasting treatment；Then sprayed, sprayed on material by by mass fraction is: 20%cr, 4.5%b, 3.5%
Si, 0.5%c, 5.0%fe, the ni composition of surplus, powder morphology is spherical in shape or subsphaeroidal, and particle size range is 85 μm, spraying coating process
Parameter is: voltage 45v, electric current 300a, argon flow amount 40l/min, powder sending quantity 1.5kg/h, spray distance 100mm, sprays thickness
About 600 μm of degree；It is heat-treated in holding furnace after spraying, wherein heat treatment parameter is: 500 DEG C of insulation 0.9h, air cooling.
5th, intermediate layer preparation:
Using sand paper, the thick ni piece of 0.2mm and co piece are polished, and after cleaning-drying, according to the order of ni/co/ni
Carry out overlapping assembling, form the intermediate layer of sandwich formats.
6th, welding process:
The hard alloy that step 4 has been sprayed carries out clamping, and intermediate layer prepared by step 5 is fixed on two hard
In the middle of alloy, subsequently carry out LASER HEATING, wherein packing material will be dried, and then scrapes suction powder feeder and four by balancing point
Cellular type coaxial powder-feeding nozzle is realized coaxially sending packing material, and laser welding process is: laser power is 4kw, spot diameter
1.2mm, defocusing amount is 5mm, and bonding speed is 18mm/s, and protective gas is helium, and gas flow is 32l/min.
Embodiment 3:
The welding method that this use LASER HEATING connects overlength hard alloy is as follows:
First, packing material is prepared:
Choose 200 mesh alloy powders and 30 mesh compound powders by mass fraction as filling metal, its alloy powder bag
Include cu powder, zn powder, ni powder, co powder, cr powder, b powder, fe powder, w powder, compound powder is wc particle；Press
Mass fraction weigh 10%cu powder, 10%zn powder, 70%ni powder, 2%co powder, 2%cr powder, 2%b powder, 1%
Fe powder, 2%w powder, and 1%wc particle；
2nd, packing material alloying:
The wc particle weighing in ball milling ball, step one is put into planetary ball mill together with the alloy powder weighing in step one
In machine, packing material powder is mixed with wc particle, ball milling bulb diameter is 10mm, ball material mass ratio is 14:1, planetary ball mill
Machine is filled with argon gas after vacuumizing, then with rotating speed for 400r/min batch (-type) ball milling 22h, ball mill every 11min conversion once turns
Dynamic direction, every ball milling 5h rests 1.1h；
3rd, hard alloy processing:
When hard alloy prepares, first hard alloy solder side is cut out the groove at about 1 ~ 5 ° of inclination angle with wire cutting, and polish
Remove cutter trade；
4th, surface recombination:
Hard alloy solder side after step 3 is processed after cleaning with sand papering, with acetone, being dried, using 24 mesh
Corundum sand carries out blasting treatment；Then sprayed, sprayed on material by by mass fraction is: 18%cr, 4.0%4b, 4.5%
Si, 0.8%c, 3%fe, the ni composition of surplus, powder morphology is spherical in shape or subsphaeroidal, and particle size range is 105 μm, spraying coating process
Parameter is: voltage 60v, electric current 500a, argon flow amount 45l/min, powder sending quantity 2.5kg/h, spray distance 120mm, sprays thickness
About 900 μm of degree；It is heat-treated in holding furnace after spraying, wherein heat treatment parameter is: 700 DEG C of insulation 1h, air cooling；
5th, intermediate layer preparation:
Using sand paper, the thick ni piece of 0.1mm and co piece are polished, and after cleaning-drying, according to the order of ni/co/ni
Carry out overlapping assembling, form the intermediate layer of sandwich formats；
6th, welding process:
The hard alloy that step 4 has been sprayed carries out clamping, and intermediate layer prepared by step 5 is fixed on two hard
In the middle of alloy, subsequently carry out LASER HEATING, wherein packing material will be dried, and then scrapes suction powder feeder and four by balancing point
Cellular type coaxial powder-feeding nozzle is realized coaxially sending packing material, and laser welding process is: laser power is 6kw, spot diameter
1.5mm, defocusing amount is 8mm, and bonding speed is 25mm/s, and protective gas is helium, and gas flow is 32l/min.
Claims (1)
1. a kind of use LASER HEATING connect overlength hard alloy welding method it is characterised in that: this use LASER HEATING
The welding method connecting overlength hard alloy is as follows:
First, packing material is prepared:
Choose 200 mesh alloy powders and 20 ~ 30 mesh compound powders by mass fraction as filling metal, alloy powder includes cu
Powder, zn powder, ni powder, co powder, cr powder, b powder, fe powder, w powder, compound powder is wc particle, with alloy
The gross mass meter of powder and wc particle, the mass fraction of wc particle is 0.1% ~ 10%；The consisting of of described alloy powder: with
The gross mass meter of alloy powder and wc particle, alloy powder by by mass fraction be 10% ~ 60%cu powder, 10% ~ 40%zn
Powder, 1% ~ 70%ni powder, 1% ~ 10%co powder, 1% ~ 10%cr powder, 0.1% ~ 10%b powder, 0.1% ~ 10%
Fe powder, 1% ~ 20%w powder constituent；
2nd, packing material alloying:
The wc particle weighing in ball milling ball, step one is put into planetary ball mill together with the alloy powder weighing in step one
In, packing material powder is mixed with wc particle, ball milling bulb diameter is 2 ~ 10mm, ball material mass ratio is 9:1 ~ 14:1, planet
Ball mill is filled with argon gas after vacuumizing, then with rotating speed for 50 ~ 400r/min batch (-type) ball milling 4 ~ 22h, the every 6 ~ 11min of ball mill
Rotation direction of conversion, every ball milling 2 ~ 5h rests 0.6 ~ 1.1h；
3rd, hard alloy processing:
When hard alloy prepares, first hard alloy solder side is cut out the groove at 1 ~ 5 ° of inclination angle with wire cutting, and removal of polishing adds
Work vestige；
4th, surface recombination:
Hard alloy solder side after step 3 is processed is through after sand papering, being cleaned, be dried with acetone, firm using 24 mesh palm fibres
Beautiful sand carries out blasting treatment；Then sprayed, sprayed on material powder morphology is spherical in shape or subsphaeroidal, particle size range is 44 ~ 105
μm, spraying parameter is: voltage 30 ~ 60v, electric current 200 ~ 500a, argon flow amount 30 ~ 45l/min, powder sending quantity 1 ~ 2.5kg/h,
Spray distance 80 ~ 120mm, 200 ~ 900 μm of spray layer thickness；It is heat-treated in holding furnace after spraying, wherein heat treatment ginseng
Number is: 200 ~ 700 DEG C of insulation 0.6 ~ 1h, air cooling；Described sprayed on material by by mass fraction is: 15% ~ 20%cr, 3.0% ~
4.5%b, 3.5% ~ 5.5%si, 0.5% ~ 1.1%c, 0.5% ~ 5.0%fe, the ni composition of surplus；
5th, intermediate layer preparation:
Using sand paper, the thick ni piece of 0.1 ~ 0.2mm and co piece are polished, and after cleaning-drying, according to the order of ni/co/ni
Carry out overlapping assembling, form the intermediate layer of sandwich formats；
6th, welding process:
The hard alloy that step 4 has been sprayed carries out clamping, and intermediate layer prepared by step 5 is fixed on two hard alloy
Centre, subsequently carries out LASER HEATING, and wherein packing material will be dried, and then scrapes suction powder feeder and four cellular types by balancing point
Coaxial powder-feeding nozzle is realized coaxially sending packing material, and laser welding process is: laser power is 3 ~ 6kw, and spot diameter 1 ~
1.5mm, defocusing amount is 1 ~ 8mm, and bonding speed is 10 ~ 25mm/s, and protective gas is helium, and gas flow is 32l/min.
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| CN105113846B (en) * | 2015-09-21 | 2017-09-05 | 盐城市昶桦户外用品股份有限公司 | A kind of high abrasion tent pole and production technology |
| CN109048034B (en) * | 2018-08-24 | 2020-11-20 | 江苏大学 | Device and method for laser shock welding of metal foil plate with automatic middle layer spraying function |
| CN109604829A (en) * | 2018-12-25 | 2019-04-12 | 常州中车通用电气柴油机有限公司 | Diesel engine of locomotive booster nozzle ring laser repair welding device and its repair welding method |
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| CA1216158A (en) * | 1981-11-09 | 1987-01-06 | Akio Hara | Composite compact component and a process for the production of the same |
| SG81940A1 (en) * | 1998-11-12 | 2001-07-24 | Univ Singapore | Method of laser casting copper-based composites |
| CN100365166C (en) * | 2003-03-18 | 2008-01-30 | 浙江工业大学 | Cutter and its processing method |
| JP2005254283A (en) * | 2004-03-11 | 2005-09-22 | Toshiba Corp | Method of repairing wear-resistant member |
| 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 |
| DE102011101576A1 (en) * | 2011-05-13 | 2012-11-15 | Mtu Aero Engines Gmbh | Combined heating for soldering a top armor by induction and laser |
| CN102534343B (en) * | 2012-03-07 | 2013-08-21 | 株洲西迪硬质合金科技有限公司 | Wear-resistant material used in drilling application |
| CN104416287B (en) * | 2013-08-27 | 2016-08-10 | 首都航天机械公司 | A kind of W-Co hard alloy and carbon steel method for laser welding |
| CN103467140B (en) * | 2013-09-03 | 2015-10-28 | 江苏大学 | A kind of side metallization of silicon carbide ceramics and method for metallising |
| CN104191099B (en) * | 2014-07-09 | 2016-02-17 | 哈尔滨正德科技开发有限公司 | For the preparation method of the composite soldering that the WC particle of carbide quartz welding strengthens |
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