CN106141499A - A kind of grounding grid heat release welding preparation method of ultra-fine welding powder - Google Patents
A kind of grounding grid heat release welding preparation method of ultra-fine welding powder Download PDFInfo
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- CN106141499A CN106141499A CN201610636175.0A CN201610636175A CN106141499A CN 106141499 A CN106141499 A CN 106141499A CN 201610636175 A CN201610636175 A CN 201610636175A CN 106141499 A CN106141499 A CN 106141499A
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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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0222—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in soldering, brazing
- B23K35/0244—Powders, particles or spheres; Preforms made therefrom
-
- 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
- B23K23/00—Alumino-thermic welding
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/302—Cu as the principal constituent
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- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
The present invention relates to the preparation method of a kind of grounding grid heat release ultra-fine welding powder of welding, belong to welding powder preparing technical field.After first the material such as nanometer aluminium powder, nano oxidized copper powder is mixed by the present invention with ethanol solution, KH560 silane coupler is added to carry out ultrasonically treated, obtain uniform sizing material, again the materials such as rice husk, wheaten starch and cellulase are carried out mix and blend, and add sodium acid carbonate at whipping process, continue agitating heating discharging, after gained material is dried, grinds, it is calcined, obtain carbonized material, itself and uniform sizing material, stearic acid are carried out mixing and ball milling, drying, i.e. can get grounding grid heat release welding and use ultra-fine welding powder.The grounding grid heat release ultra-fine welding powder of welding prepared by the present invention is difficult to moisture absorption caking when using and preserve, and the holding time is long, is up to 5～6 years；Welding heat is higher, and during welding, temperature reaches more than 720 DEG C, and soldering opening bubble-free produces, and welding quality is high.
Description
Technical field
The present invention relates to the preparation method of a kind of grounding grid heat release ultra-fine welding powder of welding, belong to welding powder technology of preparing neck
Territory.
Background technology grounding net of transformer substation is the indispensable facility for working earthing, protective grounding and lightning protection, is to protect
Card equipment, system, the important step of personal safety, it plays the weight of all pressure and earial drainage when antistatic, thunder and lightning and fault current
Act on.For a long time due to not high to the electrical performance demands of earthed system, the conductor when using steel as earth conductor
Between Joining Technology often use the methods such as electric resistance welding, soldering, SMAW to weld.These welding manners are due to by artificially
Factor impact causes the instability of joint quality, the destruction to welding base metal for the welding itself, the butt joint such as acid or alkali in soil
Corrosion etc. all cannot make earthed system keep operation efficient and steady in a long-term.
Exothermic weld is a kind of simple, high efficiency, high-quality Metal Bonding Technology, and it utilizes metallic compound chemistry anti-
Should be hot as thermal source, by overheated (being reduced) motlten metal, direct or indirect heating work, at special graphite jig
Die cavity forms definite shape, size, meets the joint made by flame welding of engineering demand.Currently, exothermic weld generally instead of with
Toward the mechanical joining methods between metal.
During currently with exothermic weld method welding grounded screen, use aluminium powder and cupric oxide powder as key reaction composition, add
Add alloying constituent, utilize Al/CuO reduction reaction liberated heat and the copper restoring to weld.But these patents exist
Following shortcoming: the 1st, welding process is excessively violent, easily causes the splash of high-temperature liquid metal, forms prestige to the safety of workmen
The side of body；2nd, the easy moisture absorption caking during preserving and using of the cupric oxide in welding powder, while reducing welding heat, holds in weld seam
The defects such as pore easily occur.
Content of the invention
The technical problem to be solved: protecting as welding powder prepared by reacted constituent for using aluminium powder and cupric oxide
Easy moisture absorption caking during depositing and using, reduces welding heat, the problem simultaneously easily occurring pore in weld seam, and the present invention is first
After first mixing the material such as nanometer aluminium powder, nano oxidized copper powder with ethanol solution, KH560 silane coupler is added to carry out ultrasonic place
Reason, obtains uniform sizing material, then the materials such as rice husk, wheaten starch and cellulase is carried out mix and blend, and add at whipping process
Enter sodium acid carbonate, continue agitating heating discharging, after gained material is dried, grinds, it is calcined, carbonized
Itself and uniform sizing material, stearic acid are carried out mixing and ball milling, drying by material, i.e. can get grounding grid heat release welding and use ultra-fine welding powder.This
The grounding grid heat release ultra-fine welding powder of welding of invention preparation is difficult to moisture absorption caking when using and preserve, and welding heat is higher, no
There will be the defects such as pore, in use will not constitute safely safety to workmen simultaneously.
For solving above-mentioned technical problem, the technical solution used in the present invention is:
(1) 100～110g nanometer aluminium powder is weighed successively, the nano oxidized copper powder of 240～250g, 430～450g nano cuprous oxide
Powder, adds and fills in the beaker that 1000～1200mL mass concentration is 30～45% ethanol solutions, add 15～20mLKH560
Beaker is proceeded in sonic oscillation instrument by silane coupler subsequently, processes 20～25min with 100～200W power ultrasonic, obtains uniformly
Slurry, standby；
(2) 30～50g rice husk is weighed successively, 100～150g wheaten starch, 0.1～0.3g cellulase, 0.05～0.08g fruit
Glue enzyme, 3～5g ptyalin, pour in the beaker filling 120～140mL deionized water, then beaker is proceeded to digital display test the speed
In constant temperature blender with magnetic force, being 45～50 DEG C with temperature, rotating speed is 360～420r/min, and constant temperature stirs reaction 20～40min,
Add 6～8g sodium acid carbonate subsequently in beaker, continue stirring reaction 3～5min, then beaker is proceeded in microwave applicator, with
400～500W power heats 15～20min, discharging, proceeds to gained material in baking oven while hot, is dried 105～110 DEG C of conditions
To constant weight；
(3) dried for above-mentioned gained material is poured in mortar, grind 6～8min, obtain mixed-powder, then be poured into crucible
In, subsequently crucible is proceeded to Muffle furnace, in stove, be passed through nitrogen with 3～5mL/min speed, under nitrogen guard mode, with 6～
8 DEG C/min speed is heated to 500～550 DEG C, after insulation reaction 20～30min, continues with 3～5 DEG C/min ramp
To 760～800 DEG C, after insulation reaction 30～45min, cool to room temperature with the furnace, obtain carbonized material；
(4) count by weight, ball mill is sequentially added into the standby uniform sizing material of 100～120 parts of steps (1), 10～15 parts
Above-mentioned gained carbonized material, 6～8 parts of stearic acid, are 15:1～18:1 addition ball milling pearl by ratio of grinding media to material, ball-milling treatment 45～60min,
Proceed to gained material in vacuum drying chamber, be dried to constant weight under the conditions of 105～110 DEG C, obtain grounding grid heat release welding and use
Ultra-fine welding powder.
The application process of the present invention: two section leads first welding needs and mold cleaning are clean, then by mould
Heat with blowtorch to remove moisture removal. then putting the wires in mould, metal spacing block, with fixing mould, is placed in by fastening fixture
Mould melts bottom thorax, seals delivery hole, then is placed in anti-leakage bag in the molten thorax of mould, then puts the grounded screen of above-mentioned preparation
Thermal weld is fallen on anti-leakage bag by ultra-fine welding powder, and uses instrument will to do into half concavity in the middle of welding powder, uses burning torch to light
Welding powder so that it is natural reaction, after question response terminates, naturally cools down 15～20s, i.e. can be taken off the wire having welded.After testing, weld
When connecing, temperature reaches more than 720 DEG C, and soldering opening bubble-free produces.
Invention is compared with additive method, and Advantageous Effects is:
(1) the grounding grid heat release ultra-fine welding powder of welding that prepared by the present invention is difficult to moisture absorption caking, during preservation when using and preserve
Between long, be up to 5～6 years；
(2) welding of the grounding grid heat release that prepared by the present invention is higher with ultra-fine welding powder welding heat, during welding heat reach 720 DEG C with
On, and the generation of soldering opening bubble-free, welding quality is high；
(3) preparation process of the present invention is simple, and the required cost of raw material is low.
Detailed description of the invention
First weighing successively 100～110g nanometer aluminium powder, the nano oxidized copper powder of 240～250g, 430～450g is nano oxidized
Cuprous powder, adds and fills in the beaker that 1000～1200mL mass concentration is 30～45% ethanol solutions, add 15～
Beaker is proceeded in sonic oscillation instrument by 20mLKH560 silane coupler subsequently, with 100～200W power ultrasonic process 20～
25min, obtains uniform sizing material, standby；Weigh 30～50g rice husk, 100～150g wheaten starch, 0.1～0.3g fiber more successively
Element enzyme, 0.05～0.08g pectase, 3～5g ptyalin, pour in the beaker filling 120～140mL deionized water, then
Beaker proceeding to digital display test the speed in constant temperature blender with magnetic force, being 45～50 DEG C with temperature, rotating speed is 360～420r/min, constant temperature
Stirring reaction 20～40min, adds 6～8g sodium acid carbonate subsequently in beaker, continues stirring reaction 3～5min, then by beaker
Proceed in microwave applicator, heat 15～20min, discharging with 400～500W power, while hot gained material is proceeded in baking oven,
It is dried to constant weight 105～110 DEG C of conditions；Again dried for above-mentioned gained material is poured in mortar, grind 6～8min,
Mixed-powder, then be poured in crucible, subsequently crucible is proceeded to Muffle furnace, in stove, be passed through nitrogen with 3～5mL/min speed
Gas, under nitrogen guard mode, is heated to 500～550 DEG C with 6～8 DEG C/min speed, after insulation reaction 20～30min,
Continue with 3～5 DEG C/min ramp to 760～800 DEG C, after insulation reaction 30～45min, cool to room temperature with the furnace, to obtain final product
Carbonized material；Finally counting by weight, being sequentially added into 100～120 parts of standby uniform sizing materials in ball mill, 10～15 parts above-mentioned
Gained carbonized material, 6～8 parts of stearic acid, are that 15:1～18:1 adds ball milling pearl by ratio of grinding media to material, and ball-milling treatment 45～60min, by institute
Material proceeds in vacuum drying chamber, be dried to constant weight under the conditions of 105～110 DEG C, obtain grounding grid heat release welding with ultra-fine
Welding powder.
Example 1
First weighing successively 110g nanometer aluminium powder, the nano oxidized copper powder of 250g, 450g nano cuprous oxide powder, addition fills
1200mL mass concentration is in the beaker of 45% ethanol solution, adds 20mLKH560 silane coupler, proceeds to beaker subsequently
In sonic oscillation instrument, process 25min with 200W power ultrasonic, obtain uniform sizing material, standby；Weighing 50g rice husk more successively, 150g is little
Wheat starch, 0.3g cellulase, 0.08g pectase, 5g ptyalin, pour in the beaker filling 140mL deionized water, then
Beaker proceeding to digital display test the speed in constant temperature blender with magnetic force, being 50 DEG C with temperature, rotating speed is 420r/min, constant temperature stirring reaction
40min, adds 8g sodium acid carbonate subsequently in beaker, continues stirring reaction 5min, then proceeds to beaker in microwave applicator, with
500W power heats 20min, discharging, proceeds to gained material in baking oven while hot, is dried to constant weight 110 DEG C of conditions；Again by upper
State the dried material of gained and pour in mortar, grind 8min, obtain mixed-powder, then be poured in crucible, subsequently by crucible
Proceed to Muffle furnace, in stove, be passed through nitrogen with 5mL/min speed, under nitrogen guard mode, with 8 DEG C/min speed heat temperature raising
To 550 DEG C, after insulation reaction 30min, continue with 5 DEG C/min ramp to 800 DEG C, after insulation reaction 45min, with stove cooling
To room temperature, obtain carbonized material；Finally count by weight, ball mill is sequentially added into 120 parts of standby uniform sizing materials, on 15 parts
State gained carbonized material, 8 parts of stearic acid, be that 18:1 adds ball milling pearl, ball-milling treatment 60min by ratio of grinding media to material, gained material is proceeded to
It in vacuum drying chamber, is dried to constant weight under the conditions of 110 DEG C, obtain grounding grid heat release welding and use ultra-fine welding powder.
First two section leads welding needs and mold cleaning are clean, then heat mould blowtorch to remove water
Point. then putting the wires in mould, metal spacing block, with fixing mould, is placed in mould and melts bottom thorax, will lead by fastening fixture
Fluid apertures seals, then is placed in anti-leakage bag in the molten thorax of mould, then the grounding grid heat release welding of above-mentioned preparation is used ultra-fine welding powder
Fall on anti-leakage bag, and use instrument that half concavity in the middle of welding powder, will be done into, use burning torch to light welding powder so that it is be naturally anti-
Should, after question response terminates, naturally cool down 20s, i.e. can be taken off the wire having welded.After testing, during welding, temperature reaches 725 DEG C,
And soldering opening bubble-free produces.
Example 2
First weighing successively 100g nanometer aluminium powder, the nano oxidized copper powder of 240g, 430g nano cuprous oxide powder, addition fills
1000mL mass concentration is in the beaker of 30% ethanol solution, adds 15mLKH560 silane coupler, proceeds to beaker subsequently
In sonic oscillation instrument, process 20min with 100W power ultrasonic, obtain uniform sizing material, standby；Weighing 30g rice husk more successively, 100g is little
Wheat starch, 0.1g cellulase, 0.05g pectase, 3g ptyalin, pour in the beaker filling 120mL deionized water, then
Beaker proceeding to digital display test the speed in constant temperature blender with magnetic force, being 45 DEG C with temperature, rotating speed is 360r/min, constant temperature stirring reaction
20min, adds 6g sodium acid carbonate subsequently in beaker, continues stirring reaction 3min, then proceeds to beaker in microwave applicator, with
400W power heats 15min, discharging, proceeds to gained material in baking oven while hot, is dried to constant weight 105 DEG C of conditions；Again by upper
State the dried material of gained and pour in mortar, grind 6min, obtain mixed-powder, then be poured in crucible, subsequently by crucible
Proceed to Muffle furnace, in stove, be passed through nitrogen with 3mL/min speed, under nitrogen guard mode, with 6 DEG C/min speed heat temperature raising
To 500 DEG C, after insulation reaction 20min, continue with 3 DEG C/min ramp to 760 DEG C, after insulation reaction 30min, with stove cooling
To room temperature, obtain carbonized material；Finally count by weight, ball mill is sequentially added into 100 parts of standby uniform sizing materials, on 10 parts
State gained carbonized material, 6 parts of stearic acid, be that 15:1 adds ball milling pearl, ball-milling treatment 45min by ratio of grinding media to material, gained material is proceeded to
It in vacuum drying chamber, is dried to constant weight under the conditions of 105 DEG C, obtain grounding grid heat release welding and use ultra-fine welding powder.
First two section leads welding needs and mold cleaning are clean, then heat mould blowtorch to remove water
Point. then putting the wires in mould, metal spacing block, with fixing mould, is placed in mould and melts bottom thorax, will lead by fastening fixture
Fluid apertures seals, then is placed in anti-leakage bag in the molten thorax of mould, then the grounding grid heat release welding of above-mentioned preparation is used ultra-fine welding powder
Fall on anti-leakage bag, and use instrument that half concavity in the middle of welding powder, will be done into, use burning torch to light welding powder so that it is be naturally anti-
Should, after question response terminates, naturally cool down 15s, i.e. can be taken off the wire having welded.After testing, during welding, temperature reaches 730 DEG C,
And soldering opening bubble-free produces.
Example 3
First weighing successively 105g nanometer aluminium powder, the nano oxidized copper powder of 245g, 445g nano cuprous oxide powder, addition fills
1100mL mass concentration is in the beaker of 40% ethanol solution, adds 17mLKH560 silane coupler, proceeds to beaker subsequently
In sonic oscillation instrument, process 22min with 150W power ultrasonic, obtain uniform sizing material, standby；Weighing 40g rice husk more successively, 120g is little
Wheat starch, 0.2g cellulase, 0.06g pectase, 4g ptyalin, pour in the beaker filling 130mL deionized water, then
Beaker proceeding to digital display test the speed in constant temperature blender with magnetic force, being 47 DEG C with temperature, rotating speed is 400r/min, constant temperature stirring reaction
30min, adds 7g sodium acid carbonate subsequently in beaker, continues stirring reaction 4min, then proceeds to beaker in microwave applicator, with
450W power heats 17min, discharging, proceeds to gained material in baking oven while hot, is dried to constant weight 107 DEG C of conditions；Again by upper
State the dried material of gained and pour in mortar, grind 7min, obtain mixed-powder, then be poured in crucible, subsequently by crucible
Proceed to Muffle furnace, in stove, be passed through nitrogen with 4mL/min speed, under nitrogen guard mode, with 7 DEG C/min speed heat temperature raising
To 520 DEG C, after insulation reaction 25min, continue with 4 DEG C/min ramp to 780 DEG C, after insulation reaction 40min, with stove cooling
To room temperature, obtain carbonized material；Finally count by weight, ball mill is sequentially added into 110 parts of standby uniform sizing materials, on 13 parts
State gained carbonized material, 7 parts of stearic acid, be that 16:1 adds ball milling pearl, ball-milling treatment 50min by ratio of grinding media to material, gained material is proceeded to
It in vacuum drying chamber, is dried to constant weight under the conditions of 107 DEG C, obtain grounding grid heat release welding and use ultra-fine welding powder.
First two section leads welding needs and mold cleaning are clean, then heat mould blowtorch to remove water
Point. then putting the wires in mould, metal spacing block, with fixing mould, is placed in mould and melts bottom thorax, will lead by fastening fixture
Fluid apertures seals, then is placed in anti-leakage bag in the molten thorax of mould, then the grounding grid heat release welding of above-mentioned preparation is used ultra-fine welding powder
Fall on anti-leakage bag, and use instrument that half concavity in the middle of welding powder, will be done into, use burning torch to light welding powder so that it is be naturally anti-
Should, after question response terminates, naturally cool down 17s, i.e. can be taken off the wire having welded.After testing, during welding, temperature reaches 740 DEG C,
And soldering opening bubble-free produces.
Claims (1)
1. the grounding grid heat release welding preparation method of ultra-fine welding powder, it is characterised in that concrete preparation process is:
(1) 100～110g nanometer aluminium powder is weighed successively, the nano oxidized copper powder of 240～250g, 430～450g nano cuprous oxide
Powder, adds and fills in the beaker that 1000～1200mL mass concentration is 30～45% ethanol solutions, add 15～20mLKH560
Beaker is proceeded in sonic oscillation instrument by silane coupler subsequently, processes 20～25min with 100～200W power ultrasonic, obtains uniformly
Slurry, standby；
(2) 30～50g rice husk is weighed successively, 100～150g wheaten starch, 0.1～0.3g cellulase, 0.05～0.08g fruit
Glue enzyme, 3～5g ptyalin, pour in the beaker filling 120～140mL deionized water, then beaker is proceeded to digital display test the speed
In constant temperature blender with magnetic force, being 45～50 DEG C with temperature, rotating speed is 360～420r/min, and constant temperature stirs reaction 20～40min,
Add 6～8g sodium acid carbonate subsequently in beaker, continue stirring reaction 3～5min, then beaker is proceeded in microwave applicator, with
400～500W power heats 15～20min, discharging, proceeds to gained material in baking oven while hot, is dried 105～110 DEG C of conditions
To constant weight；
(3) dried for above-mentioned gained material is poured in mortar, grind 6～8min, obtain mixed-powder, then be poured into crucible
In, subsequently crucible is proceeded to Muffle furnace, in stove, be passed through nitrogen with 3～5mL/min speed, under nitrogen guard mode, with 6～
8 DEG C/min speed is heated to 500～550 DEG C, after insulation reaction 20～30min, continues with 3～5 DEG C/min ramp
To 760～800 DEG C, after insulation reaction 30～45min, cool to room temperature with the furnace, obtain carbonized material；
(4) count by weight, ball mill is sequentially added into the standby uniform sizing material of 100～120 parts of steps (1), 10～15 parts
Above-mentioned gained carbonized material, 6～8 parts of stearic acid, are 15:1～18:1 addition ball milling pearl by ratio of grinding media to material, ball-milling treatment 45～60min,
Proceed to gained material in vacuum drying chamber, be dried to constant weight under the conditions of 105～110 DEG C, obtain grounding grid heat release welding and use
Ultra-fine welding powder.
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Cited By (4)
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| CN106925920A (en) * | 2017-03-08 | 2017-07-07 | 宁波高新区远创科技有限公司 | A kind of preparation method of the special aluminothermy welding powder of novel grounded net materials |
| CN107020448A (en) * | 2017-03-08 | 2017-08-08 | 宁波高新区远创科技有限公司 | A kind of preparation method of grounded screen exothermic weld welding powder |
| CN107052569A (en) * | 2017-03-08 | 2017-08-18 | 宁波高新区远创科技有限公司 | A kind of preparation method of high-activity nano thermite |
| CN107240438A (en) * | 2017-07-03 | 2017-10-10 | 青岛恒利得石墨有限公司 | A kind of graphene electronic conduction slurry and automatic production process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107020448B (en) * | 2017-03-08 | 2019-04-16 | 宁波高新区远创科技有限公司 | A kind of preparation method of grounded screen exothermic weld welding powder |
| CN107240438A (en) * | 2017-07-03 | 2017-10-10 | 青岛恒利得石墨有限公司 | A kind of graphene electronic conduction slurry and automatic production process |
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Application publication date: 20161123 |