CN108085679A - Low-temperature welding diamond coatings preparation method - Google Patents
Low-temperature welding diamond coatings preparation method Download PDFInfo
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- CN108085679A CN108085679A CN201711380319.1A CN201711380319A CN108085679A CN 108085679 A CN108085679 A CN 108085679A CN 201711380319 A CN201711380319 A CN 201711380319A CN 108085679 A CN108085679 A CN 108085679A
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
Abstract
The present invention provides a kind of low-temperature welding diamond coatings preparation methods, diadust is welded on base metal surface under cryogenic using the alloyed powder of low melting point, scaling powder and enhancing metal powder, reduce the intensity for because of the excessively high influence to parent metal performance of welding temperature, improving coating.Mainly include following steps：1. low-melting alloy powder, scaling powder, enhancing metal powder and diadust are uniformly mixed into paste with certain proportion.2. the paste obtained containing diadust is uniformly applied to matrix surface.3. the above-mentioned material for scribbling paste is heated to certain temperature, by welding diadust is made to be fixedly arranged at matrix surface.4. last diffusion annealing is for a period of time.Diamond coatings combination power produced by the present invention is big, and intensity is high, so as to greatly improve the processing quality of finished product and efficiency.
Description
Technical field
The present invention relates to a kind of technologies of low-temperature welding diamond coatings, belong to technical field of material.
Background technology
Diamond is the highest substance of nature hardness, and property is stable, wear-resisting, but is difficult into various required zero
Part and product, large scale material are also difficult to obtain, and prepare diamond coatings in substrate material surface, can obtain diamond properties
To make full use of, while cost is also saved, Related product has diamond coatings scroll saw, diamond-coated tools, diamond to apply
Layer drill bit etc. is widely used in the every field of processing.Since these instruments generally require great intensity and wearability,
So the preparation method of diamond coatings seems particularly important.The consolidation method of diamond in the coating has galvanoplastic, tree at present
Fat mull technique, cal rolling method and solder brazing method etc., but each method has the defects of certain.Resin-bonded method resin is knot
Mixture is fixedly arranged at diamond abrasive on matrix, but the heat-resisting and wear-resisting property of the diamond fretsaw prepared is bad, and matrix is to gold
The hold of hard rock particle is small, diamond particles easily come off.Solder brazing method is in matrix surface high-temperature soldering mono-layer diamond
Particle, but high-temperature heating process can generate thermal damage to matrix, and this has a certain impact to the performance of matrix.Galvanoplastic are to electroplate
Metal is bonding agent, is acted on by the electro-deposition of metal and diamond abrasive is fixedly arranged on matrix, production efficiency is relatively low, cost
It is high.These all limit the application of diamond coatings product.
The content of the invention
Technical problem：A kind of step of present invention offer is simple, and welding temperature is relatively low, the low-temperature welding small to matrix damage gold
Hard rock coating production the method increase the intensity of coating, and diamond coatings combination power is big, and intensity is high, and band obtained
Diamond coatings product processing quality and efficient.
Technical solution：The low-temperature welding diamond coatings preparation method of the present invention, comprises the following steps：
1) low-melting alloy powder, scaling powder, enhancing metal powder and diadust are mixed and uniform according to following ratio
Stir into paste：Diadust accounts for the 20%~40% of gross mass, and scaling powder accounts for the 10%~50% of gross mass, enhancing gold
Belong to powder and account for 10%~20%, surplus is low-melting alloy powder；
2) substrate material surface it is cleaned and removal oxidation corrosion object pretreatment after, by paste made from the step 1)
Object is uniformly applied to matrix surface；
3) basis material that the surface that the step 2) is made is scribbled to paste is put into reflow machine, through Reflow Soldering
It is taken out after connecing；
4) product diffusion that the step 3) is made is annealed a period of time, obtains being attached to the low temperature on basis material
Weld diamond coatings.
Further, in the method for the present invention, the low-melting alloy powder in step 1) is Sn based alloy powder, can be Sn-Ag
Sn-3.0Ag-0.5Cu, Sn-1.0Ag-0.5Cu, Sn-3.5Ag alloyed powder of system or the Sn-9.0Zn alloyed powders of Sn-Zn systems.
Further, in the method for the present invention, the scaling powder in step 1) is rosin flux or water-soluble flux.
Further, in the method for the present invention, the enhancing metal powder in step 1) is copper powder or silver powder.
Further, in the method for the present invention, the diadust surface in step 1) is coated with metallic nickel or titanium, adds gold
The wetability of hard rock and low-melting alloy, diamond grain size are distributed in 2~40 μm, and thickness of coating is 1~5 μm.
Further, in the method for the present invention, matrix in step 2) is copper coating or the metal of brass, substrate pretreated
Step is electrochemical deoiling, hot water injection, cold water flush, pickling, water flushing.
Further, in the method for the present invention, the matrix in step 2) is copper coating or the steel wire of brass, after pretreatment
The silk material container of filling paste by one circular aperture in pull out, so as in the cream of silk material surface smear fixed thickness
Shape object.
Further, in the method for the present invention, the rework profile peak temperature of reflow soldering in step 3) is in alloyed powder fusing point
More than temperature 10~50 DEG C.
Further, in the method for the present invention, when the annealing process condition in step 4) is that 150~250 DEG C of heat preservations 1~2 are small.
The present invention is using the alloyed powder of low melting point, scaling powder and enhancing metal powder by Reflow Soldering by plating metal on surface Buddha's warrior attendant
Stone is fixedly arranged at matrix surface, and for a period of time, reacted to diffuse to form high intensity new alloy phase, step is simple for last diffusion annealing,
The intensity of coating is improved, diamond coatings combination power is big, and welding temperature is relatively low, small to matrix damage, band Buddha's warrior attendant obtained
Stone coating product processing quality and efficient, intensity height, so as to greatly improve the as received basis of diamond coatings product big with reference to power
Amount and efficiency.
Advantageous effect：Compared with prior art, the present invention has the advantages that：
Firstth, traditional solder brazing can make basis material such as steel wire after processing hardening etc., and intensity drops under the high temperature conditions
Low, low-melting alloy powder welding diamond coatings temperature is low, smaller to the damage of matrix, maintains the intensity and toughness of matrix,
So that diamond coatings product disclosure satisfy that intensity needed for the course of work and toughness.
Secondth, low-melting alloy powder is mixed and annealed with enhancing metal powder.Copper or silver carry out Reaction-diffusion terms, generation with tin
Signal bronze or silver-tin alloy, as shown in the solder layer 1 in Fig. 1, intensity, the hardness of alloy-layer are significantly larger than pure copper layer, increase
To the hold of diamond, the service life of diamond coatings is extended.
It 3rd,, can using the diadust of plating metal on surface compared with not carrying out the diamond of surface metalation processing
Increase the wetability of diamond and alloyed powder, when welding can generate intermetallic compound with the tin in solder layer, in Fig. 1
Shown in the alloy-layer 5 of diamond surface metal and tin, hold of the solder layer to diamond is further improved.
4th, compared with electroplated diamond coating, time and the cost of preparation are saved, diamond hold bigger is cut
It is more preferable to cut effect；Compared with resin-bonding diamond coatings, the intensity bigger of low-temperature welding diamond coatings, service life is more
It is long.
5th, Reflow Soldering can realize the controllable of temperature so that diamond particles more effective can must be fixedly arranged at matrix by soldering paste
Surface, and combination power is big, improves the service life of product.
6th, this method is easy to operate, efficient, product quality is excellent, can be with continuous production.
Description of the drawings
Fig. 1 is low-temperature welding diamond coatings structure diagram；
Fig. 2 is diamond fretsaw cross-sectional view obtained；
Fig. 3 is diamond coatings steel plain schematic diagram obtained.
Have in figure：1- solder layers；2- diamonds；3- basis materials；4- diamond surface metal layers；5- diamond surfaces gold
Belong to the alloy-layer with tin.
Specific embodiment
With reference to embodiment and Figure of description, the present invention is further illustrated.
In order to absolutely prove the technique effect of the present invention, one group of contrast experiment is carried out, experimental procedure is as follows：
1) by Sn-3.0Ag-0.5Cu alloyed powders, water-soluble flux and the naked powder of diamond (particle diameter distribution is 15-20 μm)
It is mixed with 7: 8: 8 quality proportionings, is stirred 5 minutes with 5r/min rotating speeds on mixer；It is stirred again with 25r/min rotating speeds after vacuumizing
It mixes 25 minutes, the paste containing diadust is made.
2) a diameter of 100 μm of copper coating steel wires are chosen to pre-process as basis material, and to steel wire, 1. prepares and remove
Fluid：Sodium hydroxide 10g/L, natrium carbonicum calcinatum 25g/L, sodium metasilicate 22g/L, sodium phosphate 25g/L, are cleaned under the conditions of 60 DEG C.
It is clean and dry with 100g/L hydrochloric acid to get 3. deionized water rinsing express developed after 2. steel wire surface is rinsed well with water；Again by silk
For material with certain speed by a container equipped with the paste prepared by step 1), container outlet is that 180 μm of circles of diameter are small
Hole.
3) steel wire that there is paste on the surface that the step 2) is made is put into reflow machine, sets temperature change
Curve (as follows), takes out after finishing；Sn-3.0Ag-0.5Cu alloyed powders fusing point used in this contrast experiment is 217 DEG C, rework profile
Temperature peak is arranged to more than melting temperature 30 DEG C, is 247 DEG C.
Heating zone：- 140 DEG C of room temperature, 90 seconds；
Preheating zone：140-170 DEG C, 60 seconds；
Reflow heating zone：170-190 DEG C, 20 seconds；
Reflow area：190-247 DEG C, 60 seconds；
Cooling zone：247-75 DEG C, 60 seconds.
4) diamond consolidation strength detection, scraped finish 3 times, no gold are carried out to the diamond fretsaw of preparation using steel disc scraped finish method
Hard rock comes off, and increases scraped finish number and a small amount of diamond drop-off occurs to 20 times.Due to soldering layer to the hold of diamond not
It is enough to resist diamond shearing force suffered during scraped finish, therefore diamond abrasive is split away off soon, service life
It is very short.
The embodiment of the present invention is as follows：
Embodiment 1
1) by Sn-3.0Ag-0.5Cu alloyed powders, water-soluble flux, copper powder and the naked powder of diamond (thickness of coating is 3 μm,
Particle diameter distribution is 15-20 μm) it is mixed with 7: 8: 3: 8 quality proportionings, it is stirred 5 minutes with 5r/min rotating speeds on mixer；It takes out true
It is stirred 25 minutes with 25r/min rotating speeds again after sky, the paste containing diadust is made.
2) a diameter of 100 μm of copper coating steel wires are chosen to pre-process as basis material, and to steel wire, 1. prepares and remove
Fluid：Sodium hydroxide 10g/L, natrium carbonicum calcinatum 25g/L, sodium metasilicate 22g/L, sodium phosphate 25g/L, are cleaned under the conditions of 60 DEG C.
It is clean and dry with 100g/L hydrochloric acid to get 3. deionized water rinsing express developed after 2. steel wire surface is rinsed well with water；Again by silk
For material with certain speed by a container equipped with the paste prepared by step 1), container outlet is that 180 μm of circles of diameter are small
Hole.
3) steel wire that there is paste on the surface that the step 2) is made is put into reflow machine, sets temperature change
Curve (as follows), takes out after finishing；Sn-3.0Ag-0.5Cu alloyed powders fusing point used in the present embodiment is 217 DEG C, rework profile temperature
Degree peak value is arranged to more than melting temperature 30 DEG C, is 247 DEG C.
Heating zone：- 140 DEG C of room temperature, 90 seconds；
Preheating zone：140-170 DEG C, 60 seconds；
Reflow heating zone：170-190 DEG C, 20 seconds；
Reflow area：190-247 DEG C, 60 seconds；
Cooling zone：247-75 DEG C, 60 seconds.
4) by the semi-finished product that the step 3) is made be put into 200 DEG C of baking ovens heat preservation 2 it is small when, obtain final band Buddha's warrior attendant
Stone coating scroll saw.Diamond consolidation strength detection, scraped finish 14 times, nothing are carried out to the diamond fretsaw of preparation using steel disc scraped finish method
Diamond drop-off increases scraped finish number and a small amount of diamond drop-off occurs to 80 times.Compared with contrast experiment, added in paste
Copper powder, and the step of add annealing, and so that the hold of diamond greatly improves, this is because copper and tin reacts
Diffusion, generates signal bronze, and intensity greatly improves, and can preferably resist the shearing suffered by the scraped finish in the process of diamond
Power.
Embodiment 2
1) by Sn-3.0Ag-0.5Cu alloyed powders, water-soluble flux, copper powder and plating nickel on surface diadust (plating thickness
It is 15-20 μm to spend for 3 μm, particle diameter distribution) it is mixed with 7: 8: 3: 8 quality proportionings, on mixer 5 points are stirred with 5r/min rotating speeds
Clock；It is stirred 25 minutes with 25r/min rotating speeds again after vacuumizing, the paste containing diadust is made.
2) a diameter of 100 μm of copper coating steel wires are chosen to pre-process as basis material, and to steel wire, 1. prepares and remove
Fluid：Sodium hydroxide 10g/L, natrium carbonicum calcinatum 25g/L, sodium metasilicate 22g/L, sodium phosphate 25g/L, are cleaned under the conditions of 60 DEG C.
It is clean and dry with 100g/L hydrochloric acid to get 3. deionized water rinsing express developed after 2. steel wire surface is rinsed well with water；Again by silk
For material with certain speed by a container equipped with the paste prepared by step 1), container outlet is that 180 μm of circles of diameter are small
Hole.
3) steel wire that there is paste on the surface that the step 2) is made is put into reflow machine, sets temperature change
Curve (as follows), takes out after finishing；Sn-3.0Ag-0.5Cu alloyed powders fusing point used in the present embodiment is 217 DEG C, rework profile temperature
Degree peak value is arranged to more than melting temperature 30 DEG C, is 247 DEG C.
Heating zone：- 140 DEG C of room temperature, 90 seconds；
Preheating zone：140-170 DEG C, 60 seconds；
Reflow heating zone：170-190 DEG C, 20 seconds；
Reflow area：190-247 DEG C, 60 seconds；
Cooling zone：247-75 DEG C, 60 seconds.
4) by the semi-finished product that the step 3) is made be put into 200 DEG C of baking ovens heat preservation 2 it is small when, obtain final band Buddha's warrior attendant
Stone coating scroll saw, schematic cross-section are as shown in Figure 2.Diamond consolidation is carried out to the diamond fretsaw of preparation using steel disc scraped finish method
Intensity detection, scraped finish 25 times, no diamond drop-off increase scraped finish number and a small amount of diamond drop-off occur to 125 times, real with comparison
It tests and embodiment 1 is compared, diamond consolidation strength is maximum in the present embodiment, is on the one hand the surface by using in this present embodiment
Nickel plating diamond micron, under welding temperature, with glass putty alloying reaction can occur for nickel layer, generate nickeltin, and this is closed
Layer gold so that the combination of soldering layer and diamond is even closer, so as to improve the hold to diamond；On the other hand in cream
In shape object add in copper powder and in annealing process copper and tin reaction generate signal bronze, intensity greatly improves, can be better
Resist the shearing force suffered by the scraped finish in the process of diamond.
Embodiment 3
1) by Sn-1.0Ag-0.5Cu alloyed powders, water-soluble flux, silver powder and plating nickel on surface diadust (plating thickness
It is 2-3 μm to spend for 1 μm, particle diameter distribution) it is mixed with 2: 3: 1: 4 quality proportionings, on mixer 5 points are stirred with 5r/min rotating speeds
Clock；It is stirred 25 minutes with 25r/min rotating speeds again after vacuumizing, the paste containing diadust is made.
2) a diameter of 100 μm of copper coating steel wires are chosen to pre-process as basis material, and to steel wire, 1. prepares and remove
Fluid：Sodium hydroxide 10g/L, natrium carbonicum calcinatum 25g/L, sodium metasilicate 22g/L, sodium phosphate 25g/L, are cleaned under the conditions of 60 DEG C.
It is clean and dry with 100g/L hydrochloric acid to get 3. deionized water rinsing express developed after 2. steel wire surface is rinsed well with water；Again by silk
For material with certain speed by a container equipped with the paste prepared by step 1), container outlet is that 140 μm of circles of diameter are small
Hole.
3) steel wire that there is paste on the surface that the step 2) is made is put into reflow machine, sets temperature change
Curve (as follows), takes out after finishing；Sn-1.0Ag-0.5Cu alloyed powders fusing point used in the present embodiment is 220 DEG C, rework profile temperature
Degree peak value is arranged to more than melting temperature 50 DEG C, is 270 DEG C.
Heating zone：- 140 DEG C of room temperature, 90 seconds；
Preheating zone：140-170 DEG C, 60 seconds；
Reflow heating zone：170-190 DEG C, 20 seconds；
Reflow area：190-270 DEG C, 60 seconds；
Cooling zone：270-75 DEG C, 60 seconds.
4) by the semi-finished product that the step 3) is made be put into 200 DEG C of baking ovens heat preservation 1 it is small when, obtain final band Buddha's warrior attendant
Stone coating scroll saw.Diamond consolidation strength detection, scraped finish 25 times, nothing are carried out to the diamond fretsaw of preparation using steel disc scraped finish method
Diamond drop-off increases scraped finish number and a small amount of diamond drop-off occurs to 135 times, compared with contrast experiment, the consolidation of diamond
Intensity greatly enhances, and is on the one hand the plating nickel on surface diamond micron by using in this present embodiment, under welding temperature, nickel layer
Alloying reaction can occur with glass putty, generate nickeltin, and this alloy-layer causes the combination of soldering layer and diamond more
Closely, so as to improving the hold to diamond；On the other hand in paste add in silver powder and in annealing process silver with
Tin reaction generates silver-tin alloy, and intensity greatly improves, and can preferably resist cutting suffered by the scraped finish in the process of diamond
Shear force.
Embodiment 4
) by Sn-9.0Zn alloyed powders, water-soluble flux, copper powder and ti coat on diamond diadust, (thickness of coating is 5 μ
M, particle diameter distribution is 35-40 μm) it is mixed with 4: 1: 2: 3 quality proportionings, it is stirred 5 minutes with 5r/min rotating speeds on mixer；It takes out
It is stirred 25 minutes with 25r/min rotating speeds again after vacuum, the paste containing diadust is made.
2) a diameter of 100 μm of copper coating steel wires are chosen to pre-process as basis material, and to steel wire, 1. prepares and remove
Fluid：Sodium hydroxide 10g/L, natrium carbonicum calcinatum 25g/L, sodium metasilicate 22g/L, sodium phosphate 25g/L, are cleaned under the conditions of 60 DEG C.
It is clean and dry with 100g/L hydrochloric acid to get 3. deionized water rinsing express developed after 2. steel wire surface is rinsed well with water；Again by silk
For material with certain speed by a container equipped with the paste prepared by step 1), container outlet is that 240 μm of circles of diameter are small
Hole.
3) steel wire that there is paste on the surface that the step 2) is made is put into reflow machine, sets temperature change
Curve (as follows), takes out after finishing；Sn-9.0Zn alloyed powders fusing point used in the present embodiment is 198.5 DEG C, rework profile temperature peaks
Value is arranged to more than melting temperature 48.5 DEG C, is 247 DEG C.
Heating zone：- 140 DEG C of room temperature, 90 seconds；
Preheating zone：140-170 DEG C, 60 seconds；
Reflow heating zone：170-190 DEG C, 20 seconds；
Reflow area：190-247 DEG C, 60 seconds；
Cooling zone：247-75 DEG C, 60 seconds.
4) by the semi-finished product that the step 3) is made be put into 150 DEG C of baking ovens heat preservation 1.5 it is small when, obtain final band gold
Hard rock coating scroll saw.Diamond consolidation strength detection is carried out to the diamond fretsaw of preparation using steel disc scraped finish method, scraped finish 20 times,
Without diamond drop-off, increase scraped finish number to 100 times and a small amount of diamond drop-off occur, as plating nickel on surface diadust,
The plating titanium layer of diamond surface can also react with tin under welding temperature and generate titanium-tin alloy layer, this alloy-layer can enhance
The combination power of layer and diamond so that the consolidation strength increase of diamond.
Embodiment 5
1) by Sn-3.5Ag alloyed powders, rosin flux, silver powder and ti coat on diamond diadust (thickness of coating is 4 μm,
Particle diameter distribution is 35-40 μm) it is mixed with 3: 10: 3: 4 quality proportionings, it is stirred 5 minutes with 5r/min rotating speeds on mixer；It takes out true
It is stirred 25 minutes with 25r/min rotating speeds again after sky, the paste containing diadust is made.
2) 10 × 10 × 5mm surface brass plating aluminium sheets are chosen, and aluminium sheet is pre-processed, 1. prepare degreasing fluid：Hydrogen-oxygen
Change sodium 10g/L, natrium carbonicum calcinatum 25g/L, sodium metasilicate 22g/L, sodium phosphate 25g/L, cleaned under the conditions of 60 DEG C.2. with water by aluminium
It is clean and dry that plate surface with 100g/L hydrochloric acid gets 3. deionized water rinsing express developed after rinsing well；Finally with by the step
1) paste is uniformly applied to surface of aluminum plate made from；
3) aluminium sheet that there is paste on the surface that the step 2) is made is put into reflow machine, sets temperature change
Curve (as follows), takes out after finishing；Sn-3.5Ag alloyed powders fusing point used in the present embodiment is 221 DEG C, rework profile temperature peak
10 DEG C are arranged to more than melting temperature, is 231 DEG C.
Heating zone：- 140 DEG C of room temperature, 90 seconds；
Preheating zone：140-170 DEG C, 60 seconds；
Reflow heating zone：170-190 DEG C, 20 seconds；
Reflow area：190-231 DEG C, 60 seconds；
Cooling zone：231-75 DEG C, 60 seconds.
4) by the semi-finished product that the step 3) is made be put into 210 DEG C of baking ovens heat preservation 2 it is small when, obtain final band Buddha's warrior attendant
Stone coating layer aluminium plate, structure diagram are as shown in Figure 3.Buddha's warrior attendant is carried out to the band diamond coatings aluminium sheet of preparation using steel disc scraped finish method
Stone consolidation strength detects, scraped finish 20 times, no diamond drop-off, increases scraped finish number and a small amount of diamond drop-off occurs to 120 times, gold
Hard rock hold is stronger, and coating abrasion performance is preferable.As plating nickel on surface diadust, the plating titanium layer of diamond surface is welding
Can also react generation titanium-tin alloy layer under jointing temp with tin, this alloy-layer can enhance the combination power of layer and diamond,
So that the consolidation strength increase of diamond.
The foregoing is merely the present invention preferred forms, protection scope of the present invention not using the above embodiment as
Limit, as long as those skilled in the art's equivalence changes that the content is made according to the present invention, should all include in claims and remember
In the protection domain of load.
Claims (8)
1. a kind of low-temperature welding diamond coatings preparation method, it is characterised in that：This method comprises the following steps：
1) low-melting alloy powder, scaling powder, enhancing metal powder and diadust are mixed into simultaneously uniform stirring according to following ratio
Into paste：Diadust accounts for the 20%~40% of gross mass, and scaling powder accounts for the 10%~50% of gross mass, enhances metal powder
10%~20% is accounted for, surplus is low-melting alloy powder；
2) substrate material surface it is cleaned and removal oxidation corrosion object pretreatment after, paste made from the step 1) is equal
It is even to be applied to matrix surface；
3) basis material that the surface that the step 2) is made is scribbled to paste is put into reflow machine, after reflow soldering
It takes out；
4) product diffusion that the step 3) is made is annealed, and is obtained being attached to the low-temperature welding diamond on basis material and is applied
Layer.
2. a kind of low-temperature welding diamond coatings preparation method as described in claim 1, it is characterised in that：In the step 1)
Low-melting alloy powder be Sn based alloy powder, be Sn-3.0Ag-0.5Cu, Sn-1.0Ag-0.5Cu, Sn-3.5Ag alloyed powder or
Sn-9.0Zn alloyed powders.
3. a kind of low-temperature welding diamond coatings preparation method as described in claim 1, it is characterised in that：In the step 1)
Scaling powder for rosin flux or water-soluble flux, the enhancing metal powder is copper powder or silver powder.
4. a kind of low-temperature welding diamond coatings preparation method as described in claim 1,2 or 3, it is characterised in that：The step
It is rapid 1) in diadust surface be coated with metallic nickel or titanium, diadust particle diameter distribution is at 2~40 μm, thickness of coating 1
~5 μm.
5. a kind of low-temperature welding diamond coatings preparation method as described in claim 1,2 or 3, it is characterised in that：The step
It is rapid 2) in matrix for copper coating or brass metal, substrate material surface pre-treatment step is electrochemical deoiling, hot water injection,
Cold water flush, pickling, water rinse.
6. a kind of low-temperature welding diamond coatings preparation method as claimed in claim 5, it is characterised in that：Step 2) the base
Body for copper coating or brass steel wire, in the circular aperture for the container that pretreated silk material is filled paste by one
It pulls out, so as in the paste of silk material surface smear fixed thickness.
7. a kind of low-temperature welding diamond coatings preparation method as described in claim 1,2 or 3, it is characterised in that：The step
It is rapid 3) in reflow soldering rework profile peak temperature 10~50 DEG C more than alloyed powder melting temperature.
8. a kind of low-temperature welding diamond coatings preparation method as described in claim 1,2 or 3, it is characterised in that：The step
It is rapid 4) in annealing process condition for 150~210 DEG C heat preservation 1~2 it is small when.
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| CN1332663A (en) * | 1998-03-11 | 2002-01-23 | 诺顿公司 | Superabrasive wire saw and method for making the saw |
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