CN204843292U - From brass medicine core brazing filler metal of taking reductant, flow aid - Google Patents
From brass medicine core brazing filler metal of taking reductant, flow aid Download PDFInfo
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- CN204843292U CN204843292U CN201520341120.8U CN201520341120U CN204843292U CN 204843292 U CN204843292 U CN 204843292U CN 201520341120 U CN201520341120 U CN 201520341120U CN 204843292 U CN204843292 U CN 204843292U
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- solder
- medicine core
- filler metal
- brazing filler
- brass
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Abstract
The utility model discloses a from brass medicine core brazing filler metal of taking reductant, flow aid, it includes by the rotatory brazing filler metal pipe of making that has a heliciform coped joint of rolling up of cap copper base brazing filler metal, has the welding wire and prepared the medicine core that forms by the agent of copper borer, reductant and flow aid at the intraductal parcel of brazing filler metal. The welding wire is located the center department of medicine core, and the welding wire is single or by the silk bundle of constituteing more than two. The lap width of heliciform coped joint is 0.2-5mm. The wall thickness of brazing filler metal pipe is 0.1-0.8mm, and its cross section is circular, oblate, ellipse or polygon. The utility model has the advantages of elements such as sn, ni, si have been added to form with the welding wire in the brazing filler metal, when alloying element content is lower in the brazing solder crust, can guarantee still that it has good processing property, can make the brazing filler metal have good wettability and mobility, have improved weld strength, low temperature impact toughness and cracking resistance simultaneously, have reduced tough fragile transition temperature.
Description
Technical field
The utility model relates to welding material, especially relates to a kind of brass medicine core solder carrying reducing agent, glidant.
Background technology
Traditional soldering processes be with silk or strip brazing solder glue brazing flux use or with gas flux or heating before in advance brazing flux is coated on workpiece, solder consumption cannot ensure, and easily there is welding shortcoming, the thing followed is done over again, reprocesses and even scrap, cause brazing solder and raw-material waste, increase manufacturing cost.In addition, the process that solder glues brazing flux or applies brazing flux in advance adds operation before once weldering, adds operation and operating time, and increase a variable in soldering processes, thus the uniformity of impact welding and the stability of quality; Gas flux is not active, removes oxide-film effect poor.Due to this kind of soldering processes complexity, production efficiency is low, cost is high, not easily accurately control the consumption of brazing flux, so often occur that brazing flux adds too much or non-uniform phenomenon, not only waste brazing flux in a large number, and the more difficult cleaning of brazing flux residue of postwelding surface of the work remnants, perishable joint; Joint quality depends on the individual level of operator more in addition.
Along with modernization manufacturing industry strengthens, the control of brazing cost (is shown as to automatic welding and replaces the higher manual welding of human cost gradually, the accurate control of brazing solder consumption), and the attention rate of outer bound pair corporate environmental responsibility continues to increase, medicine core brazing solder arises at the historic moment under this industrial upgrading demand.
Owing to containing glidant in copper brazing flux (as contained borax in copper brazing flux, borax decomposes boric anhydride and kodalk: Na
2b
4o
7→ B
2o
3+ 2NaBO
2; Boric anhydride can form meltable borate with element oxides such as copper, iron, zinc, nickel: MeO+B
2o
3→ MeOB
2o
3, and kodalk can form the lower complex chemical compound of fusion temperature with borate: MeO+2NaBO
2+ B
2o
3→ (NaBO
2)
2me (BO
2)
2, easily float to brazed seam surface), improve the flowing spreadability of solder.Also contain reducing agent in cubond, effectively can remove oxide-film, the chromium oxide that can reduce as potassium fluoborate in stainless steel, potassium fluoborate decomposes is potassium fluoride and boron trifluoride: KBF simultaneously
4→ KF+BF
3, potassium fluoride can reduce fusing point and the surface tension of brazing flux, and improves striping ability; Boron trifluoride and chromium oxide react: BF
3+ Cr
2o
3→ 2CrF
3+ B
2o
3, boric anhydride can play again and help stream effect.
The existing seamed medicine core brass welding wire rolled at present, easily leaks powder (brazing flux spills solder pipe), causes solder normally cannot soak welding base metal in transport and use procedure.In addition, need to guarantee that solder has certain loading when the soldering of wide arc gap assembly, and when preparing the solder skin of medicine core solder, if the blocked up difficulty of processing that will increase of solder skin, have impact on the application of medicine core solder wide-gap brazing.
Summary of the invention
The purpose of this utility model be to provide a kind of brazing flux evenly, the brass medicine core solder carrying reducing agent, glidant that leakiness powder, solder inserts are not abundant.
For achieving the above object, the utility model can take following technical proposals:
The brass medicine core solder carrying reducing agent, glidant described in the utility model, it comprises and rotates by cap copper base solder the solder pipe with helical form overlapping the slot rolled into, and is enclosed with welding wire and by the formulated medicine core of copper brazing flux, reducing agent and glidant in described solder pipe.
Described welding wire is positioned at the center position of described medicine core, and described welding wire is tow that is single or that form by more than two.
The lap width of described helical form overlapping the slot is 0.2 ~ 5mm.
The wall thickness of described solder pipe is 0.1 ~ 0.8mm, and its cross section is circular, oblate, oval or polygon.
The utility model has the advantage of and in solder, with the addition of the elements such as Sn, Ni, Si with the form of welding wire, when in brazing solder crust, alloying element content is lower, still can ensure that it has excellent processing characteristics, solder can be made to have good wetability and mobility, improve weld strength, low-temperature impact toughness and cracking resistance simultaneously, reduce ductile-brittle transition temperature.
The utility model achieve brazing flux convenient, add in advance efficiently, have during soldering easy to assembly, easily realize automated production, low cost and other advantages, be conducive to applying of automation soldering processes; Compared with the real core solder of equivalent weight same specification, the brass medicine core solder prepared of the utility model can the workpiece of soldering greater number, cost-saving; Adopting strip brazing material to rotate, to roll into overlapping the slot be spiral helicine solder pipe, the advantage such as have that production efficiency is high, cost is low, leakiness powder, welding usability be not good, and under identical hot initial conditions, brass medicine core solder is easier to heat transfer than real core solder, melts; The utility model easily accurately controls the consumption of brazing flux, effectively reduces the use amount of solder flux, can obtain accurate light, stay-in-grade joint, and significantly reduces labour intensity and the environmental pollution of brazing process.The utility model, under crust does not change the prerequisite of composition, obtains the weld seam of different component by the metal ratio adjusted flexibly in welding wire; The solder of enough loadings particularly can be guaranteed when soldering wide arc gap assembly.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the schematic cross-sectional view of Fig. 1.
Detailed description of the invention
As shown in Figure 1-2, the brass medicine core solder carrying reducing agent, glidant described in the utility model, comprise and rotate by cap copper base solder the solder pipe 2 with helical form overlapping the slot 1 rolled into, the lap width of helical form overlapping the slot 1 is 0.2 ~ 5mm, be enclosed with in solder pipe 2 welding wire 3 and by the formulated medicine core 4(medicine core of copper brazing flux, reducing agent and glidant can the form such as powdery, paste or bulk add), welding wire 3 is positioned at the center position of medicine core 4, can be tow that is single or that form by more than two.The wall thickness of solder pipe 2 is 0.1 ~ 0.8mm, and its cross section is circular, oblate, oval or polygon.
Described in the utility modelly carry reducing agent, the preparation method of brass medicine core solder of glidant comprises the steps:
The first step, the conventionally yellow copper base solder ingot casting of melting;
Second step, is processed into the cap copper base solder of thickness 0.1 ~ 0.8mm, width 3.0 ~ 26.0mm by ingot casting;
3rd step, rotates cap copper base solder and rolls into the solder pipe 2 with helical form overlapping the slot 1, in coiling process, add in solder pipe by welding wire 3 and medicine core 4;
4th step, makes by the method for rolling or drawing the brass medicine core solder helical ring (spacing≤1.0mm between adjacent ring) that brass flux cored colder wire, solder rod (100 ~ 1000mm), brass medicine core solder ring or coiling at least vertically two enclose by solder pipe rolled for the 3rd step; Its Chinese medicine core accounts for 4 ~ 20% of finished product brass medicine core solder gross weight.
Claims (4)
1. one kind carries the brass medicine core solder of reducing agent, glidant, it is characterized in that: it comprises and rotates by cap copper base solder the solder pipe (2) with helical form overlapping the slot (1) rolled into, in described solder pipe (2), be enclosed with welding wire (3) and by the formulated medicine core (4) of copper brazing flux, reducing agent and glidant.
2. the brass medicine core solder carrying reducing agent, glidant according to claim 1, is characterized in that: described welding wire (3) is positioned at the center position of described medicine core (4), and described welding wire (3) is tow that is single or that form by more than two.
3. the brass medicine core solder carrying reducing agent, glidant according to claim 1, is characterized in that: the lap width of described helical form overlapping the slot (1) is 0.2 ~ 5mm.
4. the brass medicine core solder carrying reducing agent, glidant according to claim 1, is characterized in that: the wall thickness of described solder pipe (2) is 0.1 ~ 0.8mm, and its cross section is circular, oblate, oval or polygon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520341120.8U CN204843292U (en) | 2015-05-25 | 2015-05-25 | From brass medicine core brazing filler metal of taking reductant, flow aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520341120.8U CN204843292U (en) | 2015-05-25 | 2015-05-25 | From brass medicine core brazing filler metal of taking reductant, flow aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204843292U true CN204843292U (en) | 2015-12-09 |
Family
ID=54733889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520341120.8U Active CN204843292U (en) | 2015-05-25 | 2015-05-25 | From brass medicine core brazing filler metal of taking reductant, flow aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204843292U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104907722A (en) * | 2015-05-25 | 2015-09-16 | 郑州机械研究所 | Brass flux-cored brazing filler metal with reducing agents and flow aids and preparation method thereof |
-
2015
- 2015-05-25 CN CN201520341120.8U patent/CN204843292U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104907722A (en) * | 2015-05-25 | 2015-09-16 | 郑州机械研究所 | Brass flux-cored brazing filler metal with reducing agents and flow aids and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 450001 science avenue of Zhengzhou high tech Industrial Development Zone, Zhengzhou, Henan Province, No. Patentee after: Zhengzhou Machinery Research Institute Co., Ltd. Address before: Fengyang high tech Industrial Development Zone, Henan province Zhengzhou city 450001 Street No. 10 Patentee before: Zhengzhou Research Institute of Mechanical Engineering |
|
| CP03 | Change of name, title or address |