CN105364244B - A kind of welding method of hard alloy and stainless steel compound bar pin - Google Patents
A kind of welding method of hard alloy and stainless steel compound bar pin Download PDFInfo
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- CN105364244B CN105364244B CN201510959361.3A CN201510959361A CN105364244B CN 105364244 B CN105364244 B CN 105364244B CN 201510959361 A CN201510959361 A CN 201510959361A CN 105364244 B CN105364244 B CN 105364244B
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- scaling powder
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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
- B23K1/002—Soldering by means of induction heating
-
- 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
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/18—Dissimilar materials
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- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
A kind of welding method of hard alloy and stainless steel compound bar pin, rod pin includes mounting portion and the welding assembly of working portion two；Mounting portion is made using stainless steel, and working portion is made using Hardmetal materials, mounting portion and the working portion rod pin overall by being welded into；Described is welded as solder weldering, and mounting portion and working portion are heated using the induction coil of alternating current respectively, solder uses copper solder, and scaling powder presses 2 using copper Gas welding flux and the scaling powder of stainless steel Gas welding flux mixing composition, copper Gas welding flux and stainless steel Gas welding flux composition ratio：1 1.5 prepare；Heating-up temperature involved by welding procedure is 700 780 DEG C.The present invention can reduce the stress of welding position using the preheating to various welding materials, welding procedure whole process is in the environment through filtering dirt processing, welding position can be made not produce bubble, and the welding procedure uses alternating current non-contact thermal mode, it can effectively prevent welding material from deforming and damaged.
Description
Technical field
The present invention relates to a kind of preparation method of sand mill part product, the particularly hard alloy and stainless steel of sand mill
The welding method of compound bar pin.It is mainly used in making sand mill rod pin, belongs to powder metallurgically manufacturing technical field.
Background technology：
With the high speed development of the technology of sand milling, sand mill performance is also improved constantly therewith.Therefore the processing to sand mill
It is more fine that making also becomes, and its requirement also becomes more strict.With the raising of sand mill performance, to its core component rod pin
Requirement also more and more higher.
Material currently used for making sand mill rod pin is generally Hardmetal materials, and hard alloy is metal carbides powder
End and the mixture of cobalt, conventional metal carbides are tungsten carbide, titanium carbide etc..The rod pin of Hardmetal materials, achievable pair
The efficient nano grinding of raw material.Its wearability and intensity are significantly larger than the rod pin of other materials.Also have a small number of using rare gold
Belong to carbide and replace Hardmetal materials as making rod pin material, but because its metal is rare metal, and it is expensive, its
Using limited.
The common production method of hard alloy bar pin is two kinds：Whole hard alloy and hard alloy are welded with other materials
Get up to surf the Net composite construction.Whole hard alloy is mounting portion and working portion is global formation.Due to Hardmetal materials
Price is higher, high processing costs, causes rod pin cost of manufacture expensive.Rod pin can also be by by the mounting portion of rod pin and work
Part is respectively adopted different materials welding to complete the making of rod pin.Wherein mounting portion uses stainless steel, because it will not give birth to
Rust, during abrasive product, will not introduce impurity；Working portion uses hard alloy；The rod pin made of the method for welding
Hardmetal materials are saved, the cost of manufacture of rod pin is also reduced accordingly.But the rod pin for the method making welded at present
Hardmetal materials welding uses gas brazing method, and the uniformity of the welding method temperature, programming rate is difficult to control to, and is heated
When can produce larger thermograde.And gas brazing heating is too fast too high, easily cause brazed seam oxidation and solder component tight
Reheating is damaged, and local heated inequality, and product is easily burst and chipping；The flowing of solder when operating slow or temperature relatively low simultaneously
Property it is bad, formed in rosin joint and weld seam and leave a large amount of stomatas and slag inclusion, so that seriously reducing weld strength.It is necessary that this is added
To improve.
Do not have discovery to have the patent literature constructed with the present invention by patent retrieval, related to the present invention is main
Have following：
1st, Patent No. CN201510203922.7, the entitled " height between multi-disc hard alloy and strip stainless steel cutter hub
The patent of invention of warm method for welding ", which disclose the high temperature pricker between a kind of multi-disc hard alloy and strip stainless steel cutter hub
Soldering method, 304 stainless steels, hard alloy and the middle sheet solder for pressing from both sides transition metal are ready to, got rid of not with sand paper
Rust steel knife frame, hard alloy and the oxide layer on solder surface, clean soldering surface, solder and transition zone alloy, then with acetone
Knife rest and hard metal tip face to be connected are all coated into brazing flux, solder is placed between steel knife frame and hard alloy, with fixture point
It is other that every hard alloy is fixed on knife rest, it is then placed in closed be passed through in the batch-type furnace of technical argon and heats, is incubated, then
Furnace cooling takes out workpiece, lays down fixture to room temperature.Because alloy sheet is more, after the welding of strip cutter hub due to thermal expansion factor not
With there occurs flexural deformation, cold pressing correction deformation can damage hard metal tip by pressure；Therefore the cutter welded is heated to 450 DEG C, guarantor
Temperature 5 minutes, directly takes out hot pressing and eliminates welding deformation, obtain the product that shape is regular, bonding strength is good.
2nd, Patent No. CN201410612089.7, it is entitled " on hard alloy strip thin-wall part soldering stainless steel cylinder
The patent of invention of the technique of shape part ", which disclose one kind soldering stainless steel tubular on hard alloy strip thin-wall part
The technique of part, including：Hard alloy strip thin-wall part by pretreatment is put into glowing furnace, 400 ~ 450 are warming up to stove
℃；By its rapid taking-up from stove, stainless steel cylindrical part is quickly positioned at position to be welded, heated with flame, makes flame
Flame envelope moves in a circle around stainless steel cylindrical part, and flame will be inclined to hard alloy strip thin-wall part one in right amount
Side, when stainless steel tubular heat parts temperature is to 650 DEG C ~ 800 DEG C, dissolves into weld seam, it is ensured that herein with solder weldbonding agent rapidly
Temperature range welding is finished, and solder is ceased fire immediately covered with after weld seam；Welding workpiece is immediately placed in 350 ~ 450 DEG C of stoves after truce
Tempering 5 ~ 8 hours.
3rd, Patent No. CN201410139226.X, entitled " built-up welding Co-Cr-W is hard on super-duplex stainless steel matrix
The patent of invention of the method for matter alloy ", which disclose built-up welding Co-Cr-W hard on a kind of super-duplex stainless steel matrix and closes
The method of gold, this method is welded in substrate material surface built-up welding Co- using super-duplex stainless steel as matrix material by tungsten argon arc
Cr-W hard alloy；Super-duplex stainless steel composition is：Cr24-26%；Ni6-8%；Mo3-4%；N0.2-0.3%；Cu0.05-
1%；W0.5-1%；C≤0.03%；Si≤1.0%；Mn≤1.0%；P≤0.03%；S≤0.01%.The present invention is special by research material
Property, Optimizing Process Parameters, welding process quality control, realize the built-up welding Co-Cr-W hard on super-duplex stainless steel matrix
Alloy, obtains the test data for meeting the requirement of nuclear power regulation RCC-M standards, solves core level pump shaft sleeve matrix material and was using
Etching problem in journey.
Though these above-mentioned patents have been directed to hard alloy and stainless steel, though the first two patent is also related to
The welding of hard alloy and stainless steel, but still be to take gas brazing method, thus it is said before the problem of still have, the 3rd
Individual patent refers to the method that built-up welding is taken on stainless steel material, by carbide reactor to stainless steel material, this and the present invention
Propose that your weld stainless steel and hard alloy two parts is not same content, therefore prior art is not proposed
How to solve using gas brazing method by hard alloy with it is the problems of stainless steel welded, therefore it is still necessary to be subject to
Improve.
The content of the invention
The purpose of the present invention is exactly in weldering according to current hard alloy bar pin using hard alloy with stainless steel bi-body structure
The problems of when connecing, propose that one kind can effectively solve hard alloy and use flame pricker in welding with stainless steel bi-body structure
The welding method of problem present in welding method.
According to foregoing invention purpose, technical scheme proposed by the invention is：A kind of hard alloy and stainless steel compound bar
The welding method of pin, rod pin includes mounting portion and the welding assembly of working portion two；Wherein, mounting portion uses stainless steel
Make, working portion is made using Hardmetal materials, mounting portion and the working portion rod pin overall by being welded into；It is special
Levy and be, described is welded as solder weldering, and heats mounting portion and working portion respectively using the induction coil of alternating current,
Solder uses copper solder, and the scaling powder that scaling powder is constituted using copper Gas welding flux and the mixing of stainless steel Gas welding flux, copper gas welding is melted
Agent and stainless steel Gas welding flux composition ratio press 2：1-1.5 prepare；Heating-up temperature involved by welding procedure is 700-780 DEG C.
Further, described welding is carried out in clean environment, and welding procedure is in through in filter dirt processing
Air in carry out, air cleaner using sub- efficiently box type air filter device and bag filter medium effeciency filter.
Further, described working portion needs to carry out blasting treatment to hard alloy before welding, removes hard alloy
Brazing surface oxide layer.
Further, described mounting portion needs also to carry out stainless steel blasting treatment before welding, removes surface oil
Dirt, can use the borax solution of saturation, boil to dry after 20-30min, taking-up and welded again when flushing dose is big.
Further, described solder is cleaned using preceding application alcohol, and cuts shaping according to brazing surface.
Further, described mounting portion and working portion need to carry out the pre-heat treatment before welding, by using alternation
The induction coil of electric current preheats stainless steel, hard alloy, solder and 80 DEG C of scaling powder of mixing respectively, is incubated 2-10 seconds, and
Natural cooling afterwards, cool time is also 2-10 seconds.
Further, described welding procedure is comprised the following steps that：
Step 1：Welding preparation, first checks whether hard alloy has a crackle, the bad defect such as bending.Brazing surface need to be smooth,
Ensure alloy and the stainless quality for having good contact, just can guarantee that soldering；Stainless steel need to carry out cleaning degreasing, and flushing dose is big
When, 20-30min can be boiled using the borax solution of saturation, be welded again after taking out drying；The standard of solder and scaling powder
Standby, solder uses copper solder, is cleaned using preceding with alcohol or gasoline；Scaling powder uses copper Gas welding flux and stainless steel Gas welding flux
Scaling powder is mixed, composition ratio presses 2：1 matches somebody with somebody；
Step 2：Between pure air, stainless steel, hard alloy, pricker are preheated using the induction coil of alternating current respectively
Material and 80-100 DEG C of scaling powder of mixing, are incubated 2-10 seconds, then natural cooling, and cool time is also 2-10 seconds；
Step 3：Again the induction coil of alternating current heat respectively stainless steel, hard alloy, solder and mixing scaling powder it is straight
Stainless steel head is gently beaten to brazing filler metal melts, then with red copper pressurization rod, so that solder is fully contacted with stainless steel, weld seam is excluded
Slag and gas；
Step 4：Tempering 6-8H in 220-250 DEG C of stove is put the workpiece in after soldering, to eliminate part soldering stress, is reduced
The service life of crackle and extension rod pin；
Step 5：Postwelding is cleared up, and the rod pin welded is cleared up, clean so as to which solder remaining around weld seam is removed,
Otherwise wheel topography can be made grinding difficult by the solder unnecessary in tool sharpening；
Step 6：Postwelding quality testing and following process；It is main to check hard alloy and stainless joint quality and hard
Alloy is carrying out follow-up processing with the presence of flawless after confirming that postwelding quality has no problem.
The advantage of the invention is that：The present invention can reduce answering for welding position using the preheating to various welding materials
Power, welding procedure whole process is in the environment through filtering dirt processing, and welding position can be made not produce bubble, and the welding
Technique uses alternating current non-contact thermal mode, can effectively prevent welding material from deforming and damaged.Preheating can have
The stress of the reduction welding position of effect, the generation probability of bubble when reduction is subsequently welded.
Brief description of the drawings
Fig. 1 is welding assembly side view in the welding procedure.
Fig. 2 is the flow chart of the welding procedure.
Embodiment
Below in conjunction with drawings and examples, the present invention will be further described.
Embodiment one
A kind of welding method of hard alloy and stainless steel compound bar pin, rod pin includes 2 liang of mounting portion 1 and working portion
Welding assembly；Wherein, mounting portion 1 is made using stainless steel, and working portion 2 is made using Hardmetal materials, mounting portion 1
Overall rod pin is welded into by solder 3 and scaling powder 4 with working portion 2；Characterized in that, described is welded as solder
Weldering, and mounting portion and working portion are heated using the induction coil of alternating current respectively, solder 3 uses copper solder, scaling powder 4
The scaling powder constituted using copper Gas welding flux and the mixing of stainless steel Gas welding flux, copper Gas welding flux and stainless steel Gas welding flux composition
Than by 2：1-1 is prepared；Heating-up temperature involved by welding procedure is 700-750 DEG C.
Described welding procedure is comprised the following steps that：
Step 1：Welding preparation, first checks whether hard alloy has a crackle, the bad defect such as bending.Brazing surface need to be smooth,
Ensure alloy and the stainless quality for having good contact, just can guarantee that soldering；Stainless steel need to carry out cleaning degreasing, and flushing dose is big
When, 25min can be boiled using the borax solution of saturation, be welded again after taking out drying；The preparation of solder and scaling powder, pricker
Material uses copper solder, is cleaned using preceding with alcohol or gasoline, and cuts shaping according to brazing surface；Scaling powder uses copper Gas welding flux
With stainless steel Gas welding flux mixing scaling powder, composition ratio presses 2：1 matches somebody with somebody, removal oxide that so can be effective, and reduction is welded
Connect the surface tension of material；
Step 2：Between pure air, stainless steel, hard alloy, pricker are preheated using the induction coil of alternating current respectively
Material and 80 DEG C of scaling powder of mixing, are incubated 2 seconds, then natural cooling, and cool time is also 2 seconds；Preheating can be effective
The stress of welding position is reduced, the generation probability of bubble when reduction is subsequently welded.Pre-warmed time and the time of cooling are not
It is preferably long, if overlong time cannot play the due effect of preheating.
Step 3：Again the induction coil of alternating current heat respectively stainless steel, hard alloy, solder and mixing scaling powder it is straight
Stainless steel head is gently beaten to brazing filler metal melts, then with red copper pressurization rod, so that solder is fully contacted with stainless steel, weld seam is excluded
Slag and gas；Rethermalization time, temperature and speed are also suitable, because firing rate has obvious shadow to brazing quality
Ring, quick heating-up temperature is too high to cause weld seam to aoxidize and hard alloy generation non-uniform temperature generation crackle；But it is heated slow
Temperature is too low also to make surface oxidation, make strength of joint reduce and weld seam can because solder fluidity is bad and it is partially thick, have in weld seam
A large amount of stomatas and slag inclusion easily cause sealing-off；Preferably rethermalization time is 8 seconds in the present embodiment, and firing rate is 80-100
℃/S.The placement order of solder, mixing scaling powder, stainless steel should be correctly laid during reheating, because its placement is suitable
Ordered pair welding quality has direct influence.Correctly placement order is：Mixing scaling powder is spread in hard alloy inner hole, then by solder
It is put into hard alloy inner hole, then spreads mixing scaling powder, then last layer scaling powder is spread to hard alloy top surface, then puts stainless steel,
So it is easy to grasp brazing temperature in soldering, reduces and stick unnecessary solder outside weld seam.After brazing filler metal melts, then pressurizeed with red copper
Rod gently beats stainless steel head, so that solder is fully contacted with stainless steel, excludes the slag and gas of weld seam.
Step 4：It is tempered in stove.Tempering 6H in 220-230 DEG C of stove is put the workpiece in after soldering, should to eliminate part soldering
Power, reduces the service life of crackle and extension rod pin；
Step 5：Postwelding is cleared up.The rod pin welded is cleared up, it is clean so as to which solder remaining around weld seam is removed,
Otherwise wheel topography can be made grinding difficult by the solder unnecessary in tool sharpening.The solder of postwelding residual can also corrode weld seam
Or matrix, boiled 1-2 hours or so using the workpiece cooled down is put into boiling water, then blasting treatment.
Step 6：Postwelding quality testing and following process.Postwelding quality testing and following process；It is main to check hard alloy
With stainless joint quality and hard alloy with the presence of flawless.Rod pin is first cleaned after blasting treatment with kerosene, Ran Houyong
Naked eyes or amplification Microscopic observation, when having crackle on rod pin, surface has obvious black line or the kerosene change of plus 30% with 65%
The turpentine oil that depressor oil Jia 5% is tuned into solution, places into a small amount of tonyred, and rod pin is put into solution immersion about 10min, taken out
Clear water is cleaned, then detects surface after coating kaolin, drying, and the color if any crackle solution just can be shown on carclazyte
Come, with the naked eye can significantly see.The thread turning processing of stainless steel is being carried out after confirming that postwelding quality has no problem.
Embodiment two
The principle of embodiment two is the same with embodiment one, and simply some specific parameters are somewhat different.Described weldering
Technique is connect to comprise the following steps that：
Step 1：Welding preparation, first checks whether hard alloy has a crackle, the bad defect such as bending.Brazing surface need to be smooth,
Ensure alloy and the stainless quality for having good contact, just can guarantee that soldering；Stainless steel need to carry out cleaning degreasing, and flushing dose is big
When, 30min can be boiled using the borax solution of saturation, be welded again after taking out drying；The preparation of solder and scaling powder, pricker
Material uses copper solder, is cleaned using preceding with alcohol or gasoline；Scaling powder is mixed using copper Gas welding flux and stainless steel Gas welding flux
Scaling powder, composition ratio presses 2：1.5 match somebody with somebody；
Step 2：Between pure air, stainless steel, hard alloy, pricker are preheated using the induction coil of alternating current respectively
Material and 80 DEG C of scaling powder of mixing, are incubated 10 seconds, then natural cooling, and cool time is also 10 seconds；
Step 3：Again the induction coil of alternating current heat respectively stainless steel, hard alloy, solder and mixing scaling powder it is straight
Stainless steel head is gently beaten to brazing filler metal melts, then with red copper pressurization rod, so that solder is fully contacted with stainless steel, weld seam is excluded
Slag and gas；
Step 4：Tempering 8H in 220-230 DEG C of stove is put the workpiece in after soldering, to eliminate part soldering stress, reduction is split
The service life of line and extension rod pin；
Step 5：Postwelding is cleared up, and the rod pin welded is cleared up, clean so as to which solder remaining around weld seam is removed,
Otherwise wheel topography can be made grinding difficult by the solder unnecessary in tool sharpening；
Step 6：Postwelding quality testing and following process；It is main to check hard alloy and stainless joint quality and hard
Alloy is carrying out follow-up processing with the presence of flawless after confirming that postwelding quality has no problem.
The advantage of invention is：The present invention can reduce answering for welding position using the preheating to various welding materials
Power, welding procedure whole process is in the environment through filtering dirt processing, and welding position can be made not produce bubble, and the welding
Technique uses alternating current non-contact thermal mode, can effectively prevent welding material from deforming and damaged.
Above example is simply to illustrate that the present invention, some cited more preferably embodiments, this area skill
The usual variations and alternatives that art personnel are carried out in the range of the technical program should be comprising within the scope of the present invention.Preheating
The stress of welding position can be effectively reduced, the generation probability of bubble when reduction is subsequently welded.
Claims (6)
1. the welding method of a kind of hard alloy and stainless steel compound bar pin, rod pin includes mounting portion and working portion two is welded
Part；Wherein, mounting portion is made using stainless steel, and working portion is made using Hardmetal materials, mounting portion and work
Part is by being welded into overall rod pin；Characterized in that, described is welded as solder weldering, and using the sensing of alternating current
Coil heats mounting portion and working portion respectively, and solder uses copper solder, and scaling powder uses copper Gas welding flux and stainless steel gas
The scaling powder that flux mixing is constituted is welded, copper Gas welding flux and stainless steel Gas welding flux composition ratio press 2：1-1.5 prepare；Welding procedure
Involved heating-up temperature is 700-780 DEG C；Described mounting portion and working portion need to carry out the pre-heat treatment before welding, lead to
Cross and stainless steel, hard alloy, solder and 80 DEG C of scaling powder of mixing are preheated using the induction coil of alternating current respectively, be incubated 2-
10 seconds, then natural cooling, cool time was also 2-10 seconds.
2. the welding method of hard alloy as claimed in claim 1 and stainless steel compound bar pin, it is characterised in that：Described weldering
Connecing is carried out in clean environment, and welding procedure is in through being carried out in the air of filter dirt processing, and air cleaner is adopted
With the medium effeciency filter of sub- efficiently box type air filter device and bag filter.
3. the welding method of hard alloy as claimed in claim 2 and stainless steel compound bar pin, it is characterised in that：Described work
Making part needs to carry out blasting treatment to hard alloy before welding, removes carbide filler face of weld oxide layer.
4. the welding method of hard alloy as claimed in claim 2 and stainless steel compound bar pin, it is characterised in that：Described peace
Dress part needs also to carry out stainless steel blasting treatment before welding, removes surface and oil contaminant, can be using saturation when flushing dose is big
Borax solution, boils to dry after 20-30min, taking-up and is welded again.
5. the welding method of hard alloy as claimed in claim 2 and stainless steel compound bar pin, it is characterised in that：Described pricker
Material is cleaned using preceding application alcohol, and is molded according to brazing surface cutting.
6. the welding method of hard alloy as claimed in claim 1 and stainless steel compound bar pin, it is characterised in that：Described weldering
Technique is connect to comprise the following steps that：
Step 1：Welding preparation, first checks whether hard alloy has a crackle, the bad defect such as bending, and brazing surface needs smooth, it is ensured that
Alloy and the stainless quality for having good contact, just can guarantee that soldering；Stainless steel need to carry out cleaning degreasing, when flushing dose is big,
20-30min can be boiled using the borax solution of saturation, be welded again after taking out drying；The preparation of solder and scaling powder, pricker
Material uses copper solder, is cleaned using preceding with alcohol or gasoline；Scaling powder is mixed using copper Gas welding flux and stainless steel Gas welding flux
Scaling powder, composition ratio presses 2：1 matches somebody with somebody；
Step 2：Between pure air, using the induction coil of alternating current preheat respectively stainless steel, hard alloy, solder and
80-100 DEG C of scaling powder is mixed, 2-10 seconds is incubated, then natural cooling, cool time is also 2-10 seconds；
Step 3：The induction coil of alternating current heats stainless steel, hard alloy, solder and mixing scaling powder until pricker respectively again
Material fusing, then stainless steel head is gently beaten with red copper pressurization rod, so that solder is fully contacted with stainless steel, exclude the molten of weld seam
Slag and gas；
Step 4：Tempering 6-8H in 220-250 DEG C of stove is put the workpiece in after soldering, to eliminate part soldering stress, crackle is reduced
With the service life of extension rod pin；
Step 5：Postwelding is cleared up, and the rod pin welded is cleared up, clean so as to which solder remaining around weld seam is removed, otherwise
In tool sharpening, wheel topography can be made grinding difficult by unnecessary solder；
Step 6：Postwelding quality testing and following process；It is main to check hard alloy and stainless joint quality and hard alloy
With the presence of flawless, follow-up processing is being carried out after confirming that postwelding quality has no problem.
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| CN201510959361.3A CN105364244B (en) | 2015-12-21 | 2015-12-21 | A kind of welding method of hard alloy and stainless steel compound bar pin |
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| SE7508730L (en) * | 1974-08-02 | 1976-02-03 | Inst Materialovedenia Akademii | PROCEDURE FOR SOLDERING METALS WITH EXTREMELY HARD MATERIALS, PREFERABLY SYNTHETIC MATERIALS, AND SOLDERING MEASURES FOR PERFORMING THE PROCEDURE |
| US4880154A (en) * | 1986-04-03 | 1989-11-14 | Klaus Tank | Brazing |
| CN101704143B (en) * | 2009-11-30 | 2011-09-14 | 哈尔滨工业大学 | Method for soldering and welding hard alloy/steel compound tappet of engine by high-frequency induction |
| CN202240014U (en) * | 2011-05-31 | 2012-05-30 | 自贡硬质合金有限责任公司 | Operating platform for inductive welding devices |
| CN102728918B (en) * | 2012-06-13 | 2014-06-25 | 陕西渭河煤化工集团有限责任公司 | Method for connecting WC (Wolfram Carbide) valve core with stainless steel valve rod through thermal bonding |
| CN203649595U (en) * | 2013-12-23 | 2014-06-18 | 江西稀有稀土金属钨业集团有限公司 | Brazed connection structure between punching head of sintered-carbide die and steel base |
| CN104439592B (en) * | 2014-11-05 | 2016-04-20 | 株洲硬质合金集团有限公司 | The technique of soldering stainless steel cylindrical part on hard alloy strip thin-wall part |
| CN104801805B (en) * | 2015-04-27 | 2017-08-25 | 河南理工大学 | High-temp soldering method between multi-disc hard alloy and strip stainless steel knife rest |
-
2015
- 2015-12-21 CN CN201510959361.3A patent/CN105364244B/en active Active
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