CN105441841A - Machining method for gong copper - Google Patents
Machining method for gong copper Download PDFInfo
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- CN105441841A CN105441841A CN201510830400.XA CN201510830400A CN105441841A CN 105441841 A CN105441841 A CN 105441841A CN 201510830400 A CN201510830400 A CN 201510830400A CN 105441841 A CN105441841 A CN 105441841A
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- ingot blank
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/04—Alloys based on copper with zinc as the next major constituent
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- Mechanical Engineering (AREA)
- Metallurgy (AREA)
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- Crystallography & Structural Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a machining method for gong copper and belongs to the technical field of copper machining. The machining method includes the following steps that raw materials are smelted and include electrolytic copper, a tin ingot, manganese alloy and a zinc ingot, wherein the melting point of the manganese alloy is 750-850 DEG C, the mass percent of manganese in the manganese alloy is 30%-35%, the mass percent of Cu is finally controlled to be 60.5%-61% through smelting, the mass percent of Sn is finally controlled to be 0.8%-1% through smelting, the mass percent of Mn is finally controlled to be 0.035-0.05% through smelting, and the mass percent of Pb is finally controlled to be not larger than 0.008% through smelting; and ingot blank manufacturing, hot rolling, edge cutting and cold rolling are conducted on the raw materials with the specific cold rolling process of 2.1 mm-1.05 mm-0.85 mm-0.65 mm-0.5 mm-0.39 mm-0.32 mm. By means of the technical scheme, the problem that Mn is difficult to add can be effectively solved, and product strip patterns can be well controlled.
Description
Technical field
The present invention relates to copper processing techniques field, more particularly, relate to the sound reel copper working method that a kind of musical instrument is special.
Background technology
Sound reel copper is a kind of special brass product being used as musical instrument reed; for meeting the particular requirement of this musical instrument to tone color; and the inner quality requirement of product environment-protecting asepsis; sound reel copper on the basis of environmental protection brass band product, must add the basic demand that a certain proportion of manganese element could meet this kind musical instrument.But the difficult point that sound reel copper is produced mainly is: when (1) manganese element adds, how to add, add how many problems; (2) melting is produced after sound reel copper, and how the how transition of product below, ensure the impact of manganese element to be reduced to controlled range, ensure the specification of quality of subsequent product; (3) sound reel copper to banding pattern and performance requriements higher, pressing in ultrahard product continuous multi-pass continuous rolling process, easily causing disconnected and the problem such as banding pattern wooden dipper is bent.
About the complete processing of sound reel copper, in prior art, existing Patents is open, such as Chinese Patent Application No. 2011100533708, Shen Qing Publication day is on August 31st, 2011, and invention and created name is: the working method of novel sound reel copper material, and this application case relates to a kind of working method of novel sound reel copper material, starting material are chosen as: high purity cathode copper, copper content is not less than 99.9935%, and lead content is not more than 0.0065%, and consumption is 59%; Tin slab, Theil indices is not less than 99.995%, and lead content is not more than 0.0035%, consumption 0.4%; Zinc ingot metal, Zn content is not less than 99.995%, unleaded, and surplus is zinc; Its operating method is: copper → fusing ,+zinc+tin → stirring → casting; Milling face; Be hot-rolled down to 3.2mm; Be cold-rolled to 0.32mm; Inspection warehouse-in.After testing, lead tolerance actual measurement is 0.0034% to the material that this application case is produced, and reaches the standard figures of defined, solves the hidden danger that lead tolerance is high, but the problem how this application case unresolved manganese element add, still need to continue to optimize.
Summary of the invention
the technical problem that invention will solve
Add wayward for manganese element in reed Copper fabrication in prior art, and product banding pattern controls the problem of difficulty in following process, the invention provides a kind of sound reel copper working method, solve the problem of how to add manganese element, and product banding pattern can be controlled preferably.
technical scheme
For achieving the above object, technical scheme provided by the invention is:
A kind of sound reel copper working method of the present invention, comprises the following steps:
Step one: raw-material melting;
Starting material are chosen as electrolytic copper, tin slab, manganese alloy and zinc ingot metal, starting material are dropped in smelting furnace and melts, first add electrolytic copper and tin slab, then add manganese alloy, finally add zinc ingot metal, before starting material fusing is come out of the stove, the content of inspection Cu, Sn, Pb, Mn element, finally the mass percent of control Cu element is the mass percent of 60.5 ~ 61%, Sn element is 0.8 ~ 1%, the mass percent of Mn element is that the mass percent of 0.035 ~ 0.05%, Pb element is not more than 0.008%;
Step 2: raw-material ingot blank makes;
After step one terminates, use crystallizer to carry out cast melted starting material, then carry out milling face with milling face machine, the ingot blank that last sawing becomes length consistent;
Step 3, raw-material hot rolling and cutting edge;
After step 2 terminates, it is 2.1mm that the ingot blank hot rolling mode first melting made is rolled to thickness, then carries out cutting edge process, removes the waste material of ingot blank periphery;
Step 4, raw-material cold rolling;
After step 3 terminates, carried out by the ingot blank after cutting edge annealing, cleaning, it is cold rolling then to carry out multi-pass, and concrete rolling technology is: 2.1mm-1.05mm-0.85mm-0.65mm-0.5mm-0.39mm-0.32mm;
Step 5, raw-material inspection warehouse-in.
Further, in described manganese alloy, the mass percent of manganese element is 30% ~ 35%.
Further, the fusing point of described manganese alloy is 750 DEG C ~ 850 DEG C.
Further, the ingot blank in step 4 after cutting edge drops into stove at the bottom of roller and carries out first time process annealing, and annealing time is 100 minutes, and temperature is 630 ~ 650 DEG C.
Further, after ingot blank is rolled down to 1.05mm from thickness 2.1mm in step 4, ingot blank is dropped into stove at the bottom of roller and carry out second time process annealing, annealing time is 100 minutes, and temperature is 630 ~ 650 DEG C, cleans after annealing, continues to be rolled after having cleaned.
Further, in step 4, ingot blank being rolled down to thickness is adopt banding machine first by ingot blank itemize after 0.5mm, then proceeds rolling.
Further, adopt banding machine by ingot blank itemize after ingot blank being rolled down to 0.32mm in step 4.
beneficial effect
Adopt technical scheme provided by the invention, compared with prior art, there is following unusual effect:
(1) raw material that the present invention adopts is electrolytic copper, tin slab, manganese alloy and zinc ingot metal, wherein all containing various trace elements, and sound reel copper of the present invention requires that wherein micronutrient levels requirement is: the mass percent of Pb is not more than 0.008%, the mass percent of P/Fe/Ni is all below 0.002%, so when starting material are thrown stove, first electrolytic copper and tin slab is added, add manganese alloy gradually again, finally add zinc ingot metal, need constantly to check Cu in reinforced process, Sn, the content of the elements such as Pb, synchronized sampling does spectroscopic analysis, and adjust corresponding raw material according to result of laboratory test, till reaching standard-required, avoid the disposable reinforced unmanageable problem of each constituent content caused.
(2) Central Plains of the present invention Material selec-tion adds manganese element with the form of manganese alloy, and the mass percent of manganese element is 30% ~ 35% in this manganese alloy, the fusing point of this manganese alloy is 750 DEG C ~ 850 DEG C, the use of this manganese alloy is that technician is by a large amount of technical Analysis and experimental exploring, in order to ensure the sound quality of sound reel copper in prior art, appropriate manganese element must be added during melting, but the complex forms of adding manganese element is various, there is no fixed standard in, during actually operating, technician is often difficult to the content accurately controlling microcosmic element manganese, easily there is the phenomenon that manganese element content is too low or excessive, affect the quality of the finished product, and in prior art, do not have concrete way to solve the problem of manganese element interpolation difficulty, through great many of experiments exploration and theoretical analysis, those skilled in the art find that manganese element content is difficult to control is because the melted state in smelting furnace is difficult to control, technician adopts the various forms of raw material containing manganese element to do a large amount of contrast verification, find to use the melted state of manganese alloy the most abundant, and use fusing point to be 750 DEG C ~ 850 DEG C, the mass percent of manganese element be 30% ~ 35% manganese alloy additive effect best, manganese element fully can melt and merge with other material compositions, more conveniently in reinforced fusion process, adjust add-on at any time, to meet the standard-required of product.
(3) in the present invention, concrete cold-rolling process is: 2.1mm-1.05mm-0.85mm-0.65mm-0.5mm-0.39mm-0.32mm, wherein first adopt banding machine by made-up belt cutting edge being rolled down to by ingot blank after thickness is 0.5mm, proceed rolling again, at the intermediate step of rolling by made-up belt cutting edge, effectively can discharge the internal stress in copper strips processing, be conducive to the control of product banding pattern; Adopt banding machine finished product essence to be cut out after ingot blank being rolled down to 0.32mm finished product again, control product banding pattern further.
Embodiment
For understanding content of the present invention further, below in conjunction with embodiment, the invention will be further described.
embodiment 1
A kind of sound reel copper working method of the present embodiment, comprises the following steps:
Step one: raw-material melting;
Starting material are chosen as electrolytic copper, tin slab, manganese alloy and zinc ingot metal, starting material are dropped in smelting furnace and melts, first add electrolytic copper and tin slab, add manganese alloy again, finally add zinc ingot metal, before starting material fusing is come out of the stove, synchronized sampling does spectroscopic analysis, inspection Cu, Sn, Pb, the content of Mn element, the mass percent of final control Cu element is 60.5 ~ 61%, the mass percent of Sn element is 0.8 ~ 1%, the mass percent of Mn element is 0.035 ~ 0.05%, the mass percent of Pb element is not more than 0.008%, when each constituent content meets above-mentioned standard-required, the musical instrument reed ability tonequality that sound reel copper makes is more graceful, more meet the specification of quality of market to sound reel copper.Concrete in the present embodiment, it is 0.008% that starting material melting finally makes the mass percent of Cu element be the mass percent of 60.5%, Sn element to be the mass percent of 0.8%, Mn element to be the mass percent of 0.035%, Pb element.
Manganese alloy in the present embodiment refers to that fusing point is 750 DEG C ~ 850 DEG C, the mass percent of manganese element be 30% ~ 35% manganese alloy (this manganese alloy is Integral alloy type raw material, in actual production cannot by its fusing point, mass percent really fixed number value accurately distinguish), the use of this manganese alloy is that technician is obtained by a large amount of technical Analysis and experimental exploring.In order to ensure the sound quality of sound reel copper in prior art, appropriate manganese element must be added during melting, but the complex forms of adding manganese element is various, there is no fixed standard in, and the final content of manganese element controls postscript, and it is strict, during actually operating, technician is often difficult to the content accurately controlling microcosmic element manganese, and easily occurring the phenomenon that manganese element content is too low or too high all can affect the quality of the finished product, and in prior art, do not have concrete way to solve the problem of manganese element interpolation difficulty, those skilled in the art through great many of experiments explore and theoretical analysis to find that manganese element content is difficult to control be because its melted state in smelting furnace is difficult to control, the fusing that is difficult to had causes manganese element cannot merge with other material compositions, the problem easily occurring content overproof in melting process had, and do not make technology openly to how controlling the state of manganese element in smelting furnace in prior art, the difficult problem causing operator always to face manganese element how accurately adding.Those skilled in the art are in order to solve this difficult problem, the various forms of raw material containing manganese element is adopted to do a large amount of analysis verification, find that the state of manganese element in smelting furnace is relevant with composition with the fusing point of this raw material, raw material form containing manganese element on market is various, composition varies, and causes fusing point also to have larger gap, and fusing point melts by lower easier in smelting furnace, what fusing point was higher then easily causes melting, and can't detect manganese element (as electrolytic manganese); Technician verifies in a large number and finds that use manganese alloy is remarkable as melting sources effectiveness comparison, to be that the manganese alloy of 750 DEG C ~ 850 DEG C is easier fully melt fusing point in smelting furnace, but the concrete content of manganese element is difficult to confirm in the manganese alloy that fusing point is lower, manganese element too high levels then easily causes reinforced middle manganese element to exceed standard, manganese element content is too low, other impurity contents too high being difficult to again meet the finished product requirement, and may need repeatedly repeatedly to supplement reinforced, enhance labour intensity; Technician explores further, find that additive effect is best when the mass percent of manganese element is 30% ~ 35%, manganese alloy adding procedure is carried out gradually, and constantly synchronously carrying out spectroscopic analysis detects each constituent content, more conveniently in reinforced fusion process, adjust add-on at any time, to meet the standard-required of product.
Step 2: raw-material ingot blank makes;
After step one terminates, use crystallizer to carry out cast melted starting material, then carry out milling face with milling face machine, the ingot blank that last sawing becomes length consistent;
Step 3, raw-material hot rolling and cutting edge;
After step 2 terminates, it is 2.1mm that the ingot blank hot rolling mode first melting made is rolled to thickness, then carries out cutting edge process, removes the waste material of ingot blank periphery;
Step 4, raw-material cold rolling;
After step 3 terminates, ingot blank after cutting edge is carried out first time process annealing, carry out in annealing process stove at the bottom of roller, annealing time is 100 minutes, temperature is 630 DEG C, clean after annealing, it is cold rolling then to carry out multi-pass, and concrete rolling technology is: 2.1mm-1.05mm-0.85mm-0.65mm-0.5mm-0.39mm-0.32mm;
It should be noted that, when ingot blank being carried out the first passes (being rolled down to thickness 1.05mm from thickness 2.1mm by ingot blank), in order to ensure the requirement of product to banding pattern, more working roll is renewed to milling train, roll shape is by a flat convex control, convex roll crown controls as 0.025mm, and roller footpath requires to be consistent.After the first passes terminates, ingot blank is sent into stove at the bottom of roller and carry out second time process annealing, annealing time is 100 minutes, and temperature is 630 DEG C, cleans after annealing, then proceeds rolling.Wherein by ingot blank from after thickness 0.65mm is rolled down to 0.5mm, banding machine is adopted to carry out itemize to ingot blank, the internal stress produced in the part release course of processing, thus improve banding pattern, then rolling is proceeded, last passes terminates (being rolled down to 0.32mm from thickness 0.39mm by ingot blank), still adopts banding machine to carry out itemize to ingot blank, controls product banding pattern further.
Step 5, raw-material inspection warehouse-in.
embodiment 2
The present embodiment is with embodiment 1, and difference is, in the sound reel copper of the present embodiment, the mass percent of Cu element is 61%, the mass percent of Sn element is 1%, the mass percent of Mn element is the mass percent of 0.05%, Pb element is 0.003%, and the temperature of furnace annealing at the bottom of roller is 650 DEG C.
embodiment 3
The present embodiment is with embodiment 1, and difference is, in the sound reel copper of the present embodiment, the mass percent of Cu element is 60.8%, the mass percent of Sn element is 0.9%, the mass percent of Mn element is the mass percent of 0.04%, Pb element is 0.006%, and the temperature of furnace annealing at the bottom of roller is 640 DEG C.
Schematic above the present invention and embodiment thereof to be described; this description is not restricted; so; if those of ordinary skill in the art enlightens by it; when not departing from the invention aim; design the frame mode similar to this technical scheme and embodiment without creationary, all should protection scope of the present invention be belonged to.
Claims (7)
1. a sound reel copper working method, is characterized in that, it comprises the following steps:
Step one: raw-material melting;
Starting material are chosen as electrolytic copper, tin slab, manganese alloy and zinc ingot metal, starting material are dropped in smelting furnace and melts, first add electrolytic copper and tin slab, then add manganese alloy, finally add zinc ingot metal, before starting material fusing is come out of the stove, the content of inspection Cu, Sn, Pb, Mn element, finally the mass percent of control Cu element is the mass percent of 60.5 ~ 61%, Sn element is 0.8 ~ 1%, the mass percent of Mn element is that the mass percent of 0.035 ~ 0.05%, Pb element is not more than 0.008%;
Step 2: raw-material ingot blank makes;
After step one terminates, use crystallizer to carry out cast melted starting material, then carry out milling face with milling face machine, the ingot blank that last sawing becomes length consistent;
Step 3, raw-material hot rolling and cutting edge;
After step 2 terminates, it is 2.1mm that the ingot blank hot rolling mode first melting made is rolled to thickness, then carries out cutting edge process, removes the waste material of ingot blank periphery;
Step 4, raw-material cold rolling;
After step 3 terminates, carried out by the ingot blank after cutting edge annealing, cleaning, it is cold rolling then to carry out multi-pass, and concrete rolling technology is: 2.1mm-1.05mm-0.85mm-0.65mm-0.5mm-0.39mm-0.32mm;
Step 5, raw-material inspection warehouse-in.
2. a kind of sound reel copper working method according to claim 1, is characterized in that: in described manganese alloy, the mass percent of manganese element is 30% ~ 35%.
3. a kind of sound reel copper working method according to claim 2, is characterized in that: the fusing point of described manganese alloy is 750 DEG C ~ 850 DEG C.
4. a kind of sound reel copper working method according to claim 1, is characterized in that: the ingot blank in step 4 after cutting edge drops into stove at the bottom of roller and carries out first time process annealing, and annealing time is 100 minutes, and temperature is 630 ~ 650 DEG C.
5. a kind of sound reel copper working method according to claim 1, it is characterized in that: after in step 4, ingot blank is rolled down to 1.05mm from thickness 2.1mm, ingot blank is dropped into stove at the bottom of roller and carry out second time process annealing, annealing time is 100 minutes, temperature is 630 ~ 650 DEG C, clean after annealing, continue after having cleaned to be rolled.
6. a kind of sound reel copper working method according to claim 1, is characterized in that: in step 4, ingot blank being rolled down to thickness is adopt banding machine first by ingot blank itemize after 0.5mm, then proceeds rolling.
7. a kind of sound reel copper working method according to claim 1, is characterized in that: adopt banding machine by ingot blank itemize after ingot blank being rolled down to 0.32mm in step 4.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510830400.XA CN105441841B (en) | 2015-11-25 | 2015-11-25 | A kind of sound reel copper processing method |
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| CN201510830400.XA CN105441841B (en) | 2015-11-25 | 2015-11-25 | A kind of sound reel copper processing method |
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| CN105441841A true CN105441841A (en) | 2016-03-30 |
| CN105441841B CN105441841B (en) | 2017-08-22 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050906A (en) * | 1989-10-12 | 1991-04-24 | 北京有色金属研究总院 | Sound copper alloy |
| JP2009062610A (en) * | 2007-08-13 | 2009-03-26 | Dowa Metaltech Kk | Cu-Zn-Sn BASED COPPER ALLOY SHEET MATERIAL, METHOD FOR PRODUCING THE SAME, AND CONNECTOR |
| CN102168205A (en) * | 2011-02-28 | 2011-08-31 | 朱炳兴 | Processing method of novel sound reel copper material |
-
2015
- 2015-11-25 CN CN201510830400.XA patent/CN105441841B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050906A (en) * | 1989-10-12 | 1991-04-24 | 北京有色金属研究总院 | Sound copper alloy |
| JP2009062610A (en) * | 2007-08-13 | 2009-03-26 | Dowa Metaltech Kk | Cu-Zn-Sn BASED COPPER ALLOY SHEET MATERIAL, METHOD FOR PRODUCING THE SAME, AND CONNECTOR |
| CN102168205A (en) * | 2011-02-28 | 2011-08-31 | 朱炳兴 | Processing method of novel sound reel copper material |
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