CN104400260A - Production process of extrusion ingot containing copper phosphorus brazing filler metal - Google Patents
Production process of extrusion ingot containing copper phosphorus brazing filler metal Download PDFInfo
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- CN104400260A CN104400260A CN201410501534.2A CN201410501534A CN104400260A CN 104400260 A CN104400260 A CN 104400260A CN 201410501534 A CN201410501534 A CN 201410501534A CN 104400260 A CN104400260 A CN 104400260A
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- phosphorus
- copper
- crucible
- brazing alloy
- pot cover
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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
- B23K35/40—Making wire or rods for soldering or welding
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Abstract
The invention discloses a processing method of a copper phosphorus brazing filler metal extrusion ingot with stable phosphorus content. The method comprises the following steps: electrolytic copper and red phosphorus are weighed in proportion, and are put in a crucible with a lid; air in the crucible is exhausted, and the crucible is sealed; the crucible is heated, so that the red phosphorus and the electrolytic copper in the crucible are gradually baked to a liquid state; inert gas is filled while heating, so that the gasified red phosphorus is absorbed by solution to obtain copper phosphorus liquid; the copper phosphorus liquid is evenly stirred to remove dross on the liquid surface; the copper phosphorous liquid is poured in to a heat preserving furnace for continuous casting to obtain a continuous casting ingot; the continuous casting ingot is cut into short ingots after the surface treatment, and is extruded and drawn to obtain a finished product. The method has no need to use a copper phosphorus intermediate alloy in the production of the extrusion ingot, but directly adds a phosphorus copper mixture in a graphite crucible for heating; the phosphorus content of the produced brazing filter metal is stable; and the production period is short.
Description
Technical field
The present invention relates to a kind of manufacture craft of extrusion ingot, more particularly, it relates to a kind of manufacture craft of the extrusion ingot containing copper-phosphorus brazing alloy.
Background technology
People use the extrusion ingot of solder to manufacture dissimilar solder product usually.The processing technology of the extrusion ingot of existing copper phosphorus brazing alloy, its step and application number are that the disclosed method of patent of invention (denomination of invention is " patent of a kind of high-ductility copper-phosphorus brazing alloy and preparation method thereof ") of 200410044078.X is close, namely first cathode copper and the copper-phosphorus alloy accounting for total amount 1/3 are first placed vertically in stove, be warmed up to 600 1 800 DEG C, accelerated warming again, add coverture, after cathode copper and copper-phosphorus alloy melt completely, stir, add remaining 2/3 next copper-phosphorus alloy again, stir again after fusing.The weak point of this technical scheme is: the determination of phosphorus content in the extrusion ingot that this technique obtains, and being that the component ratio by controlling Copper phosphorus alloy processed realizes, so can increase " copper smelting phosphorus alloy " this prior step, virtually improve manufacturing cost.
Along with the development of technology, some companies attempt when producing solder directly copper and phosphorus Hybrid Heating being smelted, carry out " copper smelting phosphorus alloy " step in alternative existing technique, but such technology attempts not attaining the results expected, and traces it to its cause and is: but such manufacture craft also existing defects, fusing point due to copper is 1083 DEG C, the fusing point of phosphorus is 44 DEG C, and boiling point, at 280 DEG C, therefore constantly heats up in smelting process, phosphorus meeting generating gasification, volatilization when temperature is more than 280 DEG C, dissipation is in air; And now cathode copper also no fusing, cause phosphorus content in final extrusion ingot finished product lower than theoretical value, not meet the product customization requirement of client.
In sum, how to provide a kind of increase along with temperature, solder also has the processing technology of stable phosphorus content, is the technical barrier that those skilled in the art are badly in need of solving.
Summary of the invention
The object of the present invention is to provide a kind of manufacture craft of the extrusion ingot containing copper-phosphorus brazing alloy, this technique makes phosphorus content and stablizes, with short production cycle, solves the defect that above-mentioned prior art exists.
For achieving the above object, the invention provides following technical scheme: the processing method of the copper-phosphorus brazing alloy extrusion ingot that a kind of phosphorus content is stable, comprises the steps:
1. take cathode copper, red phosphorus in proportion, be positioned over the crucible of band pot cover; Drain air in crucible and sealed crucible;
2. heating crucible, makes the red phosphorus in crucible and cathode copper roast gradually and changes into liquid state; Limit heating edge filling with inert gas, makes the red phosphorus after gasification be absorbed by solution, obtains copper phosphorus liquid;
3. the copper phosphorus liquid of uniform stirring step 2. gained, removes liquid level scum silica frost; Pour copper phosphorus liquid into holding furnace, direct casting, obtain continuous casting ingot;
4. by the continuous casting ingot of step 3. gained through surface treatment, be cut into short ingot, extruding, wire drawing, obtain finished product.
By adopting technique scheme, in order to economize energy reduces costs, raw material (comprising copper and phosphorus) directly can be mixed together heating, can be exhausted in the crucible depositing copper and phosphorus and seal before heating, then pass into inert gas, escape out in crucible after preventing phosphorus from high temperature gasifying, guarantee that copper can absorb the phosphorus content of phosphorus in solder doing and configure consistent, finally the semi-finished product after having smelted are carried out post processing processing, form copper-phosphorus brazing alloy through processing finished product.
The present invention is set to further: described step 1. in, pot cover and crucible are hinged, and pot cover is provided with perforate; Described step 1. in, after covering crucible, cover place with dirt seal crucible and pot cover, and the perforate on pot cover be connected with vacuum-pump line, vacuumize.
By adopting technique scheme, by vavuum pump by the evacuating air in crucible, when can prevent heating, oxygen when phosphorus generating gasification or liquefaction and in air reacts generation phosphorus pentoxide, causes the reduction of the phosphorus content in solder; Simultaneously after exhausting air, the junction earth between pot cover and crucible seals, and has effectively completely cut off the circulation of crucible and outside air.
The present invention is set to further: described step 1. in, when covering crucible, the perforate on pot cover be connected with aeration equipment pipeline, filling with inert gas in crucible until overflow, and covers place with dirt seal crucible and pot cover.
By adopting technique scheme, when covering crucible with pot cover, in crucible, inert gas is filled by aeration equipment, air is diluted, air between pot cover and crucible gap flow out, when continue toward crucible in inflate after, inert gas overflows, cover pot cover again, sealed with earth, crucible and outside air also can effectively be isolated by this scheme.
The present invention be preferably: described step 1. in, the material of crucible and pot cover is graphite.Crucible is the important component part of smelting furnace, crucible is preferably graphite crucible, graphite crucible has good thermal conductance and heat-resisting quantity, in applied at elevated temperature process, thermal coefficient of expansion is little, has certain stain resistance energy to anxious heat, chilling, to acid, the corrosion resistance of alkaline solution is comparatively strong, has excellent chemical stability, can make copper phosphate mixture that better reaction occurs.Pot cover adopts same material to make, and reduces pot cover and is adding the deformation quantity hankering occurring.
The present invention be preferably: described step 3. in, the diameter of continuous casting ingot is 40mm; Described step 4. in, the surface treatment mode of continuous casting ingot is pickling or polishing.Obtained continuous casting ingot can be processed into dissimilar solder product.
The present invention be preferably: described step 1. in, the phosphorus content in copper-phosphorus brazing alloy is 7.0wt%.
By detecting the product obtained by production, the phosphorus content in copper-phosphorus brazing alloy is 6.989wt%.
The present invention be preferably: described step 1. in, the phosphorus content in copper-phosphorus brazing alloy is 7.1wt%.
By detecting the product obtained by production, the phosphorus content in copper-phosphorus brazing alloy is 7.099wt%.
The present invention be preferably: described step 1. in, the phosphorus content in copper-phosphorus brazing alloy is 7.2wt%.
By detecting the product obtained by production, the phosphorus content in copper-phosphorus brazing alloy is 7.199wt%.
In the present invention, operation principle is: the fusing point due to copper is 1083 degree, the boiling point of phosphorus is 280 degree, when temperature reaches 280 degree, phosphorus evaporates into gas, when temperature constantly rises, copper can thawing slowly, by the sealing of pot cover and crucible, while crucible is isolated from the outside, the phosphorus produced that gasifies also can not be gone out from loss in crucible, phosphorus content can not be reduced, in crucible, inert gas is filled again by aeration equipment, increase the pressure in crucible, finally when heating-up temperature reaches 1083 degree, copper is fused into copper liquid, copper liquid post liquefaction fully can absorb the phosphorus of equivalent, finally obtained required copper-phosphorus brazing alloy liquid, after opening pot cover, the copper-phosphorus brazing alloy of liquid towards stirs fully, make the more even of both mixing, carry out stirring after mixing, scum silica frost in liquid towards copper-phosphorus brazing alloy is removed, finally obtained copper-phosphorus brazing alloy liquid chain pearl is become continuous casting ingot.
Compared with prior art, novelty is in the present invention:
1, because crucible is not filled up by raw material, air can be there is, phosphorus is when heating, can react with the oxygen in air, the content of phosphorus in solder can be reduced, so be necessary formerly air to be drained, then seal, directly copper phosphorus is heated with in prior art, then pour inert gas and there is difference in essence;
2, in the present invention, inert gas has two effects, and one is carried out diluting and even draining by the oxygen in air, serves the effect draining air; Two is fill full more inert gas in crucible, increases pressure, promotes the absorption of copper liquid;
3, by directly directly making solder toward crucible interior interpolation phosphorus and copper, decreasing step phosphorus being processed into copper-phosphorus alloy, reducing the production cycle.
The present invention compared with the existing technology, there is following beneficial effect: by crucible is being carried out good seal approach, make it possible to directly directly make solder toward crucible interior interpolation phosphorus and copper, decrease step phosphorus being processed into copper-phosphorus alloy, simplify processing technology, decrease processing cost simultaneously, reduce the production cycle, substantially increase the interests of enterprise.
Detailed description of the invention
By the following examples the manufacture craft of copper-phosphorus brazing alloy extrusion ingot of the present invention is further described in detail.
Concrete steps of the present invention can be divided into:
(1) take cathode copper, red phosphorus in proportion, be positioned over the crucible of band pot cover;
(2) when covering crucible, the perforate on pot cover be connected with aeration equipment pipeline, filling with inert gas in crucible is until overflow;
(3) place is covered by dirt seal crucible and pot cover;
(4) crucible is put into intermediate frequency furnace to heat;
(5) when by the copper in crucible and phosphorus heating and melting, continue inert gas to be injected in crucible by perforate by aeration equipment, make the inert gas being full of higher pressure in crucible;
(6) open pot cover and carry out stirring and descum to forming liquid copper-phosphorus brazing alloy after copper and copper heating and melting;
(7) pour obtained liquid copper-phosphorus brazing alloy into holding furnace, direct casting becomes continuous casting ingot;
(8) diameter of continuous casting ingot is 40mm;
(9), in described step (8), the surface treatment mode of continuous casting ingot is pickling or polishing.
Wherein pot cover is made up of graphite, pot cover and crucible hinged, simultaneously preferably pot cover and graphite crucible orifice configuration match, and can realize interference fit.
Because this scheme is by inert gas by the oxygen dilution in air, finally drain as manual operation, therefore this programme phosphorus content deposits the loss of positive and negative 0.001, but such deviation is on solder not impact itself.
It should be noted that herein, except by being drained by the air in crucible with inert gas, also can directly use vavuum pump to be evacuated by the air in crucible by the opening on crucible.
Wherein gas blanket is inert gas; inert gas comprises helium, neon, argon, krypton, xenon etc.; gas blanket can be made up of one or more inert gases (is preferably helium herein; price is low); after pot cover and crucible being bonded, filling completely more helium by opening toward sequential in graphite crucible increases the pressure in crucible.
Operation principle is as follows:
Fusing point due to copper is 1083 degree, but the boiling point of phosphorus is will generating gasification after 280 degree, now copper does not also reach fusing point, because crucible is sealed, gas after phosphorus gasifies after 280 degree of high temperature can not be gone out in loss, ensure that copper-phosphorus brazing alloy can obtain the phosphorus content of stable and consistent, in crucible, inert gas can not react with phosphorus simultaneously, also phosphorus content can not be reduced, last in heating process, phosphorus is absorbed by copper liquid slowly, after copper all melts, the copper-phosphorus brazing alloy of liquid towards stirs fully, copper liquid and phosphorus liquid can better be mixed, then the scum silica frost in liquid copper-phosphorus brazing alloy is removed, ensure the purity of liquid copper-phosphorus brazing alloy, finally make finished product.
By the finished product produced after the preparation to different phosphate content, detect, the preparation requirement of client can be met completely, reduce the production cycle by this scheme company simultaneously, saved cost of labor, be conducive to wideling popularize this scheme.
The above is only the preferred embodiment of the present invention, protection scope of the present invention be not only confined to above-described embodiment, and all technical schemes belonged under thinking of the present invention all belong to protection scope of the present invention.It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a processing method for the copper-phosphorus brazing alloy extrusion ingot that phosphorus content is stable, comprises the steps:
1. take cathode copper, red phosphorus in proportion, be positioned over the crucible of band pot cover; Drain air in crucible and sealed crucible;
2. heating crucible, makes the red phosphorus in crucible and cathode copper roast gradually and changes into liquid state; Limit heating edge filling with inert gas, makes the red phosphorus after gasification be absorbed by solution, obtains copper phosphorus liquid;
3. the copper phosphorus liquid of uniform stirring step 2. gained, removes liquid level scum silica frost; Pour copper phosphorus liquid into holding furnace, direct casting, obtain continuous casting ingot;
4. by the continuous casting ingot of step 3. gained through surface treatment, be cut into short ingot, extruding, wire drawing, obtain finished product.
2. the manufacture craft of the extrusion ingot containing copper-phosphorus brazing alloy according to claim 1, is characterized in that: described step 1. in, pot cover and crucible are hinged, and pot cover is provided with perforate.
3. the manufacture craft of the extrusion ingot containing copper-phosphorus brazing alloy according to claim 2, is characterized in that: described step 1. in, after covering crucible, cover place with dirt seal crucible and pot cover, and the perforate on pot cover be connected with vacuum-pump line, vacuumize.
4. the manufacture craft of the extrusion ingot containing copper-phosphorus brazing alloy according to claim 2, it is characterized in that: described step 1. in, when covering crucible, the perforate on pot cover is connected with aeration equipment pipeline, filling with inert gas in crucible until overflow, and covers place with dirt seal crucible and pot cover.
5. the manufacture craft of the extrusion ingot containing copper-phosphorus brazing alloy according to claim 1, is characterized in that: described step 1. in, the material of crucible and pot cover is graphite.
6. the manufacture craft of the extrusion ingot containing copper-phosphorus brazing alloy according to claim 1, is characterized in that: described step 3. in, the diameter of continuous casting ingot is 40mm.
7. the manufacture craft of the extrusion ingot containing copper-phosphorus brazing alloy according to claim 6, is characterized in that: described step 4. in, the surface treatment mode of continuous casting ingot is pickling or polishing.
8. the manufacture craft of the extrusion ingot containing copper-phosphorus brazing alloy according to claim 1, is characterized in that: described step 1. in, the phosphorus content in copper-phosphorus brazing alloy is 7.0wt%.
9. the manufacture craft of the extrusion ingot containing copper-phosphorus brazing alloy according to claim 1, is characterized in that: described step 1. in, the phosphorus content in copper-phosphorus brazing alloy is 7.1wt%.
10. the manufacture craft of the extrusion ingot containing copper-phosphorus brazing alloy according to claim 1, is characterized in that: described step 1. in, the phosphorus content in copper-phosphorus brazing alloy is 7.2wt%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410501534.2A CN104400260B (en) | 2014-09-27 | 2014-09-27 | The manufacture craft of extrusion ingot containing copper-phosphorus brazing alloy |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410501534.2A CN104400260B (en) | 2014-09-27 | 2014-09-27 | The manufacture craft of extrusion ingot containing copper-phosphorus brazing alloy |
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| CN104400260A true CN104400260A (en) | 2015-03-11 |
| CN104400260B CN104400260B (en) | 2017-08-04 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107553002A (en) * | 2017-09-04 | 2018-01-09 | 湖北汽车工业学院 | A kind of soldering masterbatch and its soldering processes |
| CN111088446A (en) * | 2019-12-31 | 2020-05-01 | 杭州华光焊接新材料股份有限公司 | Copper-phosphorus brazing filler metal and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58128292A (en) * | 1982-01-26 | 1983-07-30 | Furukawa Electric Co Ltd:The | Thin strip of phosphorus copper brazing filler metal |
| CN1377752A (en) * | 2001-04-04 | 2002-11-06 | 费友康 | Smelting method for phosphorus-copper solder |
| CN101530952A (en) * | 2009-04-29 | 2009-09-16 | 江苏科技大学 | Boracic Cu-P-based amorphous brazing filler metal and method for preparing same |
| CN103008915A (en) * | 2012-12-27 | 2013-04-03 | 浙江信和科技股份有限公司 | Low-silver copper-based solder free of spillover phenomenon during weld period |
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2014
- 2014-09-27 CN CN201410501534.2A patent/CN104400260B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58128292A (en) * | 1982-01-26 | 1983-07-30 | Furukawa Electric Co Ltd:The | Thin strip of phosphorus copper brazing filler metal |
| CN1377752A (en) * | 2001-04-04 | 2002-11-06 | 费友康 | Smelting method for phosphorus-copper solder |
| CN101530952A (en) * | 2009-04-29 | 2009-09-16 | 江苏科技大学 | Boracic Cu-P-based amorphous brazing filler metal and method for preparing same |
| CN103008915A (en) * | 2012-12-27 | 2013-04-03 | 浙江信和科技股份有限公司 | Low-silver copper-based solder free of spillover phenomenon during weld period |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107553002A (en) * | 2017-09-04 | 2018-01-09 | 湖北汽车工业学院 | A kind of soldering masterbatch and its soldering processes |
| CN111088446A (en) * | 2019-12-31 | 2020-05-01 | 杭州华光焊接新材料股份有限公司 | Copper-phosphorus brazing filler metal and preparation method thereof |
| CN111088446B (en) * | 2019-12-31 | 2021-08-17 | 杭州华光焊接新材料股份有限公司 | Copper-phosphorus brazing filler metal and preparation method thereof |
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| CN104400260B (en) | 2017-08-04 |
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