CN109366040A - A kind of exothermic weld agent and its welding method - Google Patents
A kind of exothermic weld agent and its welding method Download PDFInfo
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- CN109366040A CN109366040A CN201811557719.XA CN201811557719A CN109366040A CN 109366040 A CN109366040 A CN 109366040A CN 201811557719 A CN201811557719 A CN 201811557719A CN 109366040 A CN109366040 A CN 109366040A
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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
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
- B23K35/3602—Carbonates, basic oxides or hydroxides
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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
- B23K23/00—Alumino-thermic welding
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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
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/362—Selection of compositions of fluxes
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Abstract
The invention discloses a kind of exothermic weld agent and its welding method, ingredient includes copper oxide, aluminium powder, magnesium powder, calcirm-fluoride, silicon powder.The following steps are included: S1 ingredient: the exothermic weld agent includes welding powder, pyrophoric powder；The dehumidifying of S2 mold: the mold inner-cavity includes welding chamber, solder chamber, welds and is connected between chamber and solder chamber by sluice way, carries out heating and dehumidification to the inner cavity of mold；S3 cleaning: after cleaning to mold inner-cavity and welding body, welding body is put into welding chamber；S4 blowing: steel disc is placed between sluice way and solder chamber, the hollow tube of both ends open is placed in solder chamber, hollow tube one end is placed on steel disc, welding powder is filled outside hollow tube, pyrophoric powder is filled in hollow tube, welding powder height is identical as pyrophoric powder height, takes out hollow tube later, and repave one layer of pyrophoric powder in welding powder and pyrophoric powder upper surface；S5 igniting: weldment is taken out after lighting pyrophoric powder Reaction Welding.The invention enables exothermic weld stable reaction, welding quality is improved.
Description
Technical field
The present invention relates to welding technology fields, and in particular to a kind of exothermic weld agent and its welding method.
Background technique
Exothermic weld is a kind of simple, high efficiency, high quality metal joining method.Exothermic weld passes through thermit reaction institute
The high temperature of generation makes metal welding, to reach the welding effect of high quality.This reaction be in graphite jig resistant to high temperature into
Capable, under normal service condition, a mold can weld 70 points or more.Exothermal reaction process only needs short several seconds
Time was both achievable.The stability of existing exothermic weld is to be improved.
Summary of the invention
The purpose of the present invention is to provide a kind of exothermic weld agent and its welding methods, solve existing exothermic weld quality
Problem to be improved.
In order to solve the above technical problems, the invention adopts the following technical scheme:
A kind of exothermic weld agent, ingredient include copper oxide, aluminium powder, magnesium powder, calcirm-fluoride, silicon powder.What copper oxide and aluminium powder were lighted
In the case of reaction generate copper, aluminum oxide and release a large amount of heat, to weld to welding body, magnesium powder be can be used as
Pyrophoric powder；Calcirm-fluoride can be used as cosolvent, can reduce the fusing point of infusibility substance, promotes material residue flowing, keeps material residue and metal fine
Separation；The addition of silicon powder improves the high temperature resistant of product, wear-resistant and inoxidizability；The formula so that exothermic weld stable reaction,
Welding quality improves.
Preferably, its ingredient further includes potassium nitrate, manganese nitrate.Potassium nitrate and manganese nitrate can play combustion-supporting effect,
And it does not pollute the environment.
Preferably, in parts by weight, ingredient includes 84~95 parts of copper oxide, 8.4~10.5 parts of aluminium powder, magnesium powder
0.24~0.58 part, 0.68~0.95 part of calcirm-fluoride, 0.45~0.78 part of silicon powder.
Preferably, in parts by weight, ingredient includes 94~95 parts of copper oxide, 9~10.5 parts of aluminium powder, magnesium powder 0.15
~0.45 part, 0.35~0.5 part of calcirm-fluoride, 0.35~0.78 part of silicon powder, 0.25~0.35 part of potassium nitrate, manganese nitrate 0.45~
0.8 part.
Preferably, the copper oxide partial size be distributed as 40~60 purposes account for 76~86%, 60~80 purposes account for 12~
22%, remaining≤2%.Copper oxide partial size has an impact to reaction speed, stable phase, moderate in this ratio reaction speed, stable reaction,
The pad consistency of formation is balanced close.
A kind of exothermic weld agent welding method, comprising the following steps:
S1 ingredient: the exothermic weld agent includes welding powder, pyrophoric powder；The welding powder includes copper oxide, aluminium powder, calcirm-fluoride, silicon powder,
The pyrophoric powder includes magnesium powder；
The dehumidifying of S2 mold: the mold inner-cavity includes welding chamber, solder chamber, welds and is connected between chamber and solder chamber by sluice way
It connects, heating and dehumidification is carried out to the inner cavity of mold；
S3 cleaning: after cleaning to mold inner-cavity and welding body, welding body is put into welding chamber；
S4 blowing: placing steel disc between sluice way and solder chamber, and the hollow tube of both ends open, hollow tube are placed in solder chamber
One end is placed on steel disc, and welding powder is filled outside hollow tube, fills pyrophoric powder, welding powder height and pyrophoric powder height phase in hollow tube
Together, hollow tube is taken out later, and repaves one layer of pyrophoric powder in welding powder and pyrophoric powder upper surface；Dust figure drawing pin " insertion " is ignited in formation
Welding powder shape ignites after lighting inside welding powder upper surface and welding powder so that the diffusion that is swift in response, and the extent of reaction is more balanced.
S5 igniting: weldment is taken out after lighting pyrophoric powder Reaction Welding.
Preferably, further including potassium nitrate, manganese nitrate in the welding powder.
Preferably, in parts by weight, copper oxide is 94~95 parts, 9~10.5 parts of aluminium powder, magnesium powder 0.15~0.45
Part, 0.35~0.5 part of calcirm-fluoride, 0.35~0.78 part of silicon powder, 0.25~0.35 part of potassium nitrate, 0.45~0.8 part of manganese nitrate.
Preferably, in the S3 cleaning, be first preheated to 140~170 DEG C to welding body, then by welding body
Surface mass brushes off, can be by the oxide removal on surface.
Preferably, the hollow tube interior diameter is the 1/15~1/20 of the overall diameter of welding powder.To hollow tube interior diameter
That is pyrophoric powder diameter is defined, and it is fine and close to react pad that is the most stable, being formed in this ratio for the diameter of pyrophoric powder and welding powder
Degree is balanced close.
Compared with prior art, the beneficial effects of the present invention are: the invention enables exothermic weld stable reaction, welding quality
It improves；Reaction speed of the present invention is moderate, stable reaction, and the pad consistency of formation is balanced close.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Embodiment 1:
A kind of exothermic weld agent and its welding method, comprising the following steps:
S1 ingredient: the exothermic weld agent includes welding powder, pyrophoric powder；The welding powder includes copper oxide, aluminium powder, calcirm-fluoride, silicon powder,
The pyrophoric powder includes magnesium powder；In parts by weight, 95 parts of copper oxide, 8.4 parts of aluminium powder, 0.58 part of magnesium powder, calcirm-fluoride 0.68
Part, 0.78 part of silicon powder.
The dehumidifying of S2 mold: the mold inner-cavity includes welding chamber, solder chamber, welds and passes through sluice way between chamber and solder chamber
Connection carries out heating and dehumidification to the inner cavity of mold；
S3 cleaning: after cleaning to mold inner-cavity and welding body, welding body is put into welding chamber；
S4 blowing: placing steel disc between sluice way and solder chamber, and the hollow tube of both ends open, hollow tube are placed in solder chamber
One end is placed on steel disc, and welding powder is filled outside hollow tube, fills pyrophoric powder, welding powder height and pyrophoric powder height phase in hollow tube
Together, hollow tube is taken out later, and repaves one layer of pyrophoric powder in welding powder and pyrophoric powder upper surface；Dust figure drawing pin " insertion " is ignited in formation
Welding powder shape ignites after lighting inside welding powder upper surface and welding powder so that the diffusion that is swift in response, and the extent of reaction is more balanced.
S5 igniting: weldment is taken out after lighting pyrophoric powder Reaction Welding.
Embodiment 2:
A kind of exothermic weld agent and its welding method, comprising the following steps:
S1 ingredient: the exothermic weld agent includes welding powder, pyrophoric powder；The welding powder includes copper oxide, aluminium powder, calcirm-fluoride, silicon powder,
The pyrophoric powder includes magnesium powder；In parts by weight, 84 parts of copper oxide, 10.5 parts of aluminium powder, 0.24 part of magnesium powder, calcirm-fluoride 0.95
Part, 0.45 part of silicon powder.Wherein copper oxide partial size is distributed as 40~60 purposes and accounts for 86%, and 60~80 purposes account for 12%, remaining 2%.
The dehumidifying of S2 mold: the mold inner-cavity includes welding chamber, solder chamber, welds and passes through sluice way between chamber and solder chamber
Connection carries out heating and dehumidification to the inner cavity of mold；
S3 cleaning: after cleaning to mold inner-cavity and welding body, welding body is put into welding chamber；
S4 blowing: placing steel disc between sluice way and solder chamber, and the hollow tube of both ends open, hollow tube are placed in solder chamber
One end is placed on steel disc, and welding powder is filled outside hollow tube, fills pyrophoric powder, welding powder height and pyrophoric powder height phase in hollow tube
Together, hollow tube is taken out later, and repaves one layer of pyrophoric powder in welding powder and pyrophoric powder upper surface；Dust figure drawing pin " insertion " is ignited in formation
Welding powder shape ignites after lighting inside welding powder upper surface and welding powder so that the diffusion that is swift in response, and the extent of reaction is more balanced.
S5 igniting: weldment is taken out after lighting pyrophoric powder Reaction Welding.
Embodiment 3:
A kind of exothermic weld agent and its welding method, comprising the following steps:
S1 ingredient: the exothermic weld agent includes welding powder, pyrophoric powder；The welding powder include copper oxide, aluminium powder, calcirm-fluoride, silicon powder,
Potassium nitrate, manganese nitrate, the pyrophoric powder include magnesium powder；In parts by weight, 94 parts of copper oxide, 10.5 parts of aluminium powder, magnesium powder
0.15 part, 0.5 part of calcirm-fluoride, 0.35 part of silicon powder, 0.35 part of potassium nitrate, 0.8 part of manganese nitrate.Wherein copper oxide partial size is distributed as 40
Purpose accounts for 76%, and 60~80 purposes account for 22%, remaining 2%.Copper oxide particle diameter distribution is moderate in this ratio reaction speed, stable reaction,
The pad consistency of formation is balanced close.Copper oxide and aluminium powder light in the case where reaction generate copper, aluminum oxide and
A large amount of heat is released, to weld to welding body, magnesium powder can be used as pyrophoric powder；Calcirm-fluoride can be used as cosolvent, can drop
The fusing point of low infusibility substance promotes material residue flowing, separates material residue and metal very well；The addition of silicon powder improves the resistance to height of product
Temperature, wear-resistant and inoxidizability；The formula is so that exothermic weld stable reaction, welding quality improve.Potassium nitrate and manganese nitrate are equal
Combustion-supporting effect can be played, and is not polluted the environment.
The dehumidifying of S2 mold: the mold inner-cavity includes welding chamber, solder chamber, welds and passes through sluice way between chamber and solder chamber
Connection carries out heating and dehumidification to the inner cavity of mold；
S3 cleaning: after cleaning to mold inner-cavity and welding body, welding body is put into welding chamber；
S4 blowing: placing steel disc between sluice way and solder chamber, and the hollow tube of both ends open, hollow tube are placed in solder chamber
One end is placed on steel disc, and welding powder is filled outside hollow tube, fills pyrophoric powder, welding powder height and pyrophoric powder height phase in hollow tube
Together, hollow tube is taken out later, and repaves one layer of pyrophoric powder in welding powder and pyrophoric powder upper surface；Dust figure drawing pin " insertion " is ignited in formation
Welding powder shape ignites after lighting inside welding powder upper surface and welding powder so that the diffusion that is swift in response, and the extent of reaction is more balanced.
S5 igniting: weldment is taken out after lighting pyrophoric powder Reaction Welding.
Embodiment 4:
A kind of exothermic weld agent and its welding method, comprising the following steps:
S1 ingredient: the exothermic weld agent includes welding powder, pyrophoric powder；The welding powder include copper oxide, aluminium powder, calcirm-fluoride, silicon powder,
Potassium nitrate, manganese nitrate, the pyrophoric powder include magnesium powder；In parts by weight, 95 parts of copper oxide, 9 parts of aluminium powder, magnesium powder 0.45
Part, 0.5 part of calcirm-fluoride, 0.78 part of silicon powder, 0.25 part of potassium nitrate, 0.8 part of manganese nitrate.Wherein copper oxide partial size is distributed as 40~60
Purpose accounts for 80%, and 60~80 purposes account for 19%, remaining≤1%.Copper oxide particle diameter distribution is moderate in this ratio reaction speed, and reaction is steady
Fixed, the pad consistency of formation is balanced close.Reaction generates copper, aluminum oxide simultaneously in the case that copper oxide and aluminium powder are lighted
And a large amount of heat is released, to weld to welding body, magnesium powder can be used as pyrophoric powder；Calcirm-fluoride can be used as cosolvent, energy
The fusing point of infusibility substance is reduced, promotes material residue flowing, separates material residue and metal very well；The addition of silicon powder improves the resistance to height of product
Temperature, wear-resistant and inoxidizability；The formula is so that exothermic weld stable reaction, welding quality improve.Potassium nitrate and manganese nitrate are equal
Combustion-supporting effect can be played, and is not polluted the environment.
The dehumidifying of S2 mold: the mold inner-cavity includes welding chamber, solder chamber, welds and passes through sluice way between chamber and solder chamber
Connection carries out heating and dehumidification to the inner cavity of mold；
S3 cleaning: after cleaning to mold inner-cavity and welding body, welding body is put into welding chamber；
S4 blowing: placing steel disc between sluice way and solder chamber, and the hollow tube of both ends open, hollow tube are placed in solder chamber
One end is placed on steel disc, and welding powder is filled outside hollow tube, fills pyrophoric powder, welding powder height and pyrophoric powder height phase in hollow tube
Together, hollow tube is taken out later, and repaves one layer of pyrophoric powder in welding powder and pyrophoric powder upper surface；Dust figure drawing pin " insertion " is ignited in formation
Welding powder shape ignites after lighting inside welding powder upper surface and welding powder so that the diffusion that is swift in response, and the extent of reaction is more balanced.
S5 igniting: weldment is taken out after lighting pyrophoric powder Reaction Welding.
Embodiment 5:
A kind of exothermic weld agent and its welding method, comprising the following steps:
S1 ingredient: the exothermic weld agent includes welding powder, pyrophoric powder；The welding powder include copper oxide, aluminium powder, calcirm-fluoride, silicon powder,
Potassium nitrate, manganese nitrate, the pyrophoric powder include magnesium powder；In parts by weight, 95 parts of copper oxide, 9 parts of aluminium powder, magnesium powder 00.45
Part, 0.35 part of calcirm-fluoride, 0.78 part of silicon powder, 0.25 part of potassium nitrate, 0.8 part of manganese nitrate.Wherein copper oxide partial size be distributed as 40~
60 purposes account for 76~86%, 60~80 purposes and account for 12~22%, remaining≤2%.Copper oxide particle diameter distribution is suitable in this ratio reaction speed
In, the pad consistency equilibrium of stable reaction, formation is close.Reaction generates copper, three in the case that copper oxide and aluminium powder are lighted
Al 2 O and a large amount of heat of releasing, to weld to welding body, magnesium powder can be used as pyrophoric powder；Calcirm-fluoride can be used as
Cosolvent can reduce the fusing point of infusibility substance, promote material residue flowing, separate material residue and metal very well；The addition of silicon powder improves
The high temperature resistant of product, wear-resistant and inoxidizability；The formula is so that exothermic weld stable reaction, welding quality improve.Potassium nitrate
And manganese nitrate can play combustion-supporting effect, and not pollute the environment.
The dehumidifying of S2 mold: the mold inner-cavity includes welding chamber, solder chamber, welds and passes through sluice way between chamber and solder chamber
Connection carries out heating and dehumidification to the inner cavity of mold；
S3 cleaning: first welding body is carried out to be preheated to 150 DEG C, then welding body surface mass is brushed off, and to mold inner-cavity
After being cleaned, welding body is put into welding chamber；
S4 blowing: placing steel disc between sluice way and solder chamber, and the hollow tube of both ends open, hollow tube are placed in solder chamber
One end is placed on steel disc, and welding powder is filled outside hollow tube, fills pyrophoric powder, welding powder height and pyrophoric powder height phase in hollow tube
Together, hollow tube interior diameter is the 1/20 of the overall diameter of welding powder.Hollow tube is taken out later, and is repaved in welding powder and pyrophoric powder upper surface
One layer of pyrophoric powder；Formation is ignited dust figure drawing pin " insertion " welding powder shape, ignite inside welding powder upper surface and welding powder after lighting so that
Be swift in response diffusion, and the extent of reaction is more balanced.
S5 igniting: weldment is taken out after lighting pyrophoric powder Reaction Welding.
Embodiment 6:
A kind of exothermic weld agent and its welding method, comprising the following steps:
S1 ingredient: the exothermic weld agent includes welding powder, pyrophoric powder；The welding powder include copper oxide, aluminium powder, calcirm-fluoride, silicon powder,
Potassium nitrate, manganese nitrate, the pyrophoric powder include magnesium powder, red phosphorus, aluminium powder, copper oxide；In parts by weight, copper oxide in welding powder
94 parts, 10.5 parts of aluminium powder, 0.15 part of magnesium powder, 0.5 part of calcirm-fluoride, 0.35 part of silicon powder, 0.35 part of potassium nitrate, 0.45 part of manganese nitrate.
2.15 parts of magnesium powder, 0.5 part of red phosphorus, 2 parts of aluminium powder, 0.2 part of copper oxide in pyrophoric powder.
Wherein copper oxide partial size is distributed as 40~60 purposes and accounts for 76%, and 60~80 purposes account for 22%, remaining 2%.Copper oxide partial size
It is distributed, stable reaction moderate in this ratio reaction speed, the pad consistency of formation is balanced close.Copper oxide and aluminium powder are lighted
In the case where reaction generate copper, aluminum oxide and release a large amount of heat, to weld to welding body, magnesium powder can be made
For pyrophoric powder；Calcirm-fluoride can be used as cosolvent, can reduce the fusing point of infusibility substance, promotes material residue flowing, makes material residue and metal very
Good separation；The addition of silicon powder improves the high temperature resistant of product, wear-resistant and inoxidizability；The formula is so that exothermic weld reaction is steady
Fixed, welding quality improves.Potassium nitrate and manganese nitrate can play combustion-supporting effect, and not pollute the environment.
The dehumidifying of S2 mold: the mold inner-cavity includes welding chamber, solder chamber, welds and passes through sluice way between chamber and solder chamber
Connection carries out heating and dehumidification to the inner cavity of mold；
S3 cleaning: first welding body is carried out to be preheated to 170 DEG C, then welding body surface mass is brushed off, and to mold inner-cavity
After being cleaned, welding body is put into welding chamber；
S4 blowing: placing steel disc between sluice way and solder chamber, and the hollow tube of both ends open, hollow tube are placed in solder chamber
One end is placed on steel disc, and welding powder is filled outside hollow tube, fills pyrophoric powder, welding powder height and pyrophoric powder height phase in hollow tube
Together, hollow tube interior diameter is the 1/15 of the overall diameter of welding powder.Hollow tube is taken out later, and is repaved in welding powder and pyrophoric powder upper surface
One layer of pyrophoric powder；Formation is ignited dust figure drawing pin " insertion " welding powder shape, ignite inside welding powder upper surface and welding powder after lighting so that
Be swift in response diffusion, and the extent of reaction is more balanced.
S5 igniting: weldment is taken out after lighting pyrophoric powder Reaction Welding.
Optimum embodiment:
A kind of exothermic weld agent and its welding method, comprising the following steps:
S1 ingredient: the exothermic weld agent includes welding powder, pyrophoric powder；The welding powder include copper oxide, aluminium powder, calcirm-fluoride, silicon powder,
Potassium nitrate, manganese nitrate, the pyrophoric powder include magnesium powder, red phosphorus；In parts by weight, 94.5 parts of copper oxide, 9.5 parts of aluminium powder,
0.25 part of magnesium powder, 0.45 part of calcirm-fluoride, 0.52 part of silicon powder, 0.30 part of potassium nitrate, 0.55 part of manganese nitrate, 0.32 part of red phosphorus,.Wherein
Copper oxide partial size is distributed as 40~60 purposes and accounts for 80%, and 60~80 purposes account for 18%, remaining 2%.Copper oxide particle diameter distribution is in this ratio
Reaction speed is moderate, stable reaction, and the pad consistency of formation is balanced close.Copper oxide and aluminium powder react in the case where lighting
It generates copper, aluminum oxide and releases a large amount of heat, to weld to welding body, magnesium powder can be used as pyrophoric powder；Fluorine
Changing calcium can be used as cosolvent, can reduce the fusing point of infusibility substance, promotes material residue flowing, separates material residue and metal very well；Silicon powder
Addition improve product high temperature resistant, wear-resistant and inoxidizability；The formula is so that exothermic weld stable reaction, welding quality mention
It is high.Potassium nitrate and manganese nitrate can play combustion-supporting effect, and not pollute the environment.
The dehumidifying of S2 mold: the mold inner-cavity includes welding chamber, solder chamber, welds and passes through sluice way between chamber and solder chamber
Connection carries out heating and dehumidification to the inner cavity of mold；
S3 cleaning: first welding body is carried out to be preheated to 150 DEG C, then welding body surface mass is brushed off, and to mold inner-cavity
After being cleaned, welding body is put into welding chamber；
S4 blowing: placing steel disc between sluice way and solder chamber, and the hollow tube of both ends open, hollow tube are placed in solder chamber
One end is placed on steel disc, and welding powder is filled outside hollow tube, fills pyrophoric powder, welding powder height and pyrophoric powder height phase in hollow tube
Together, hollow tube interior diameter is the 1/20 of the overall diameter of welding powder.Hollow tube is taken out later, and is repaved in welding powder and pyrophoric powder upper surface
One layer of pyrophoric powder；Formation is ignited dust figure drawing pin " insertion " welding powder shape, ignite inside welding powder upper surface and welding powder after lighting so that
Be swift in response diffusion, and the extent of reaction is more balanced.
S5 igniting: weldment is taken out after lighting pyrophoric powder Reaction Welding.
Multiple explanatory embodiments spoken of in the present specification refer to the specific method packet for combining embodiment description
It includes at least one embodiment of the application generality description.It is not certain that statement of the same race, which occur, in multiple places in the description
Refer to the same embodiment.Furthermore, it is understood that is advocated is to combine when describing a method in conjunction with any one embodiment
Other embodiments realize that this method is fallen within the scope of the present invention.
Claims (10)
1. a kind of exothermic weld agent, it is characterised in that: its ingredient includes copper oxide, aluminium powder, magnesium powder, calcirm-fluoride, silicon powder.
2. a kind of exothermic weld agent according to claim 1, it is characterised in that: its ingredient further includes potassium nitrate, manganese nitrate.
3. a kind of exothermic weld agent according to claim 1, it is characterised in that: in parts by weight, ingredient includes oxygen
84~95 parts of copper of change, 8.4~10.5 parts of aluminium powder, 0.24~0.58 part of magnesium powder, 0.68~0.95 part of calcirm-fluoride, silicon powder 0.45~
0.78 part.
4. a kind of exothermic weld agent according to claim 2, it is characterised in that: in parts by weight, ingredient includes oxygen
Change 94~95 parts of copper, 9~10.5 parts of aluminium powder, 0.15~0.45 part of magnesium powder, 0.35~0.5 part of calcirm-fluoride, silicon powder 0.35~0.78
Part, 0.25~0.35 part of potassium nitrate, 0.45~0.8 part of manganese nitrate.
5. a kind of exothermic weld agent according to claim 1, it is characterised in that: the copper oxide partial size is distributed as 40~
60 purposes account for 76~86%, 60~80 purposes and account for 12~22%, remaining≤2%.
6. a kind of exothermic weld agent welding method, it is characterised in that: the following steps are included:
S1 ingredient: the exothermic weld agent includes welding powder, pyrophoric powder；The welding powder includes copper oxide, aluminium powder, calcirm-fluoride, silicon powder,
The pyrophoric powder includes magnesium powder；
The dehumidifying of S2 mold: the mold inner-cavity includes welding chamber, solder chamber, welds and is connected between chamber and solder chamber by sluice way
It connects, heating and dehumidification is carried out to the inner cavity of mold；
S3 cleaning: after cleaning to mold inner-cavity and welding body, welding body is put into welding chamber；
S4 blowing: placing steel disc between sluice way and solder chamber, and the hollow tube of both ends open, hollow tube are placed in solder chamber
One end is placed on steel disc, and welding powder is filled outside hollow tube, fills pyrophoric powder, welding powder height and pyrophoric powder height phase in hollow tube
Together, hollow tube is taken out later, and repaves one layer of pyrophoric powder in welding powder and pyrophoric powder upper surface；
S5 igniting: weldment is taken out after lighting pyrophoric powder Reaction Welding.
7. a kind of exothermic weld agent welding method according to claim 6, it is characterised in that: further include in the welding powder
Potassium nitrate, manganese nitrate.
8. a kind of exothermic weld agent welding method according to claim 7, it is characterised in that: in parts by weight, oxygen
Change copper be 94~95 parts, 9~10.5 parts of aluminium powder, 0.15~0.45 part of magnesium powder, 0.35~0.5 part of calcirm-fluoride, silicon powder 0.35~
0.78 part, 0.25~0.35 part of potassium nitrate, 0.45~0.8 part of manganese nitrate.
9. a kind of exothermic weld agent welding method according to claim 6, it is characterised in that: the S3 cleaning
In, first welding body is carried out to be preheated to 140~170 DEG C, then welding body surface mass is brushed off.
10. a kind of exothermic weld agent welding method according to claim 6, it is characterised in that: straight in the hollow tube
Diameter is the 1/15~1/20 of the overall diameter of welding powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811557719.XA CN109366040B (en) | 2018-12-19 | 2018-12-19 | Exothermic welding agent and welding method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811557719.XA CN109366040B (en) | 2018-12-19 | 2018-12-19 | Exothermic welding agent and welding method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109366040A true CN109366040A (en) | 2019-02-22 |
| CN109366040B CN109366040B (en) | 2021-02-19 |
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| CN201811557719.XA Active CN109366040B (en) | 2018-12-19 | 2018-12-19 | Exothermic welding agent and welding method thereof |
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| CN110587136A (en) * | 2019-09-23 | 2019-12-20 | 中国人民解放军陆军装甲兵学院 | Auxiliary agent for laser welding, application thereof and welding method |
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