CN103173647A - Making method of elastic copper alloy sheet used for spectacle frame - Google Patents
Making method of elastic copper alloy sheet used for spectacle frame Download PDFInfo
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- CN103173647A CN103173647A CN2011104282766A CN201110428276A CN103173647A CN 103173647 A CN103173647 A CN 103173647A CN 2011104282766 A CN2011104282766 A CN 2011104282766A CN 201110428276 A CN201110428276 A CN 201110428276A CN 103173647 A CN103173647 A CN 103173647A
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Abstract
The invention discloses a making method of an elastic copper alloy sheet used for a spectacle frame. A component qualified alloy ingot is used to continuously process in the invention. The above alloy comprises 8.5-9.5% by mass of Ni, 5.5-6.5% by mass of Sn, and the balance Cu. The method comprises the following steps: heating to 345-355DEG C, carrying out heat insulation of the ingot in an inert atmosphere for 20-40min, carrying out hot rolling deformation by 15-25%, and covering with carbon at a temperature of 795-805DEG C or homogeneously annealing in an inert gas; carrying out hot rolling cogging of the ingot, wherein the total machining rate is 55-70%; carrying out intermediate destressing annealing in a vacuum annealing furnace in 645-655DEGC/2h; carrying out cold rolling until the thickness of the sheet is 1.2-1.4mm, wherein the total machining rate is 70-80%, and the pass machining rate is 10-15%; and carrying out solid solution and water quenching in the inert atmosphere, and carrying out cold rolling to the thickness of the finished sheet. The finished sheet is straightened, and the surface of the sheet is pickled. The performances of the elastic sheet used for the spectacle frame, which is made through using the method, can reach the performances of elastic CuNi9Sn6 alloy sheets reaching the levels of foreign products.
Description
Technical field
The present invention relates to a kind of novel processing technology and prepare frame material copper alloy CuNi9Sn6 elastic sheet material.
Background technology
Spectacle frame material generally is divided into three kinds, i.e. metal frame, nonmetal and natural materials mirror holder.And at present on the market metal frame copper alloy, nickelalloy and precious metal are generally arranged.The copper alloy mirror holder mainly contains brass, bronze, German silver, and because its erosion resistance is relatively poor, easily the pig copper is green, easily gets rusty, and is yielding, but cost is lower, and easily processing, is usually used in low-grade mirror holder, is minimum a kind of of price.The nickelalloy erosion resistance is better, and is difficult for getting rusty, and physical strength also is better than copper alloy, therefore metal frame adopts being in the great majority of nickel alloy material, generally is used for the medium and high classes mirror holder.And in high-grade mirror holder take the titanium metal frame as main, the purer titanium of its elasticity is good, but not as pure titanium mirror holder light, pure titanium and titanium alloy are also to be high-grade mirror holder material.Another gold, platinum and alloy etc. are high-grade mirror holder material, and price is also higher.In order to seek high strength and the snappiness of the alloys such as existing nickel, titanium, have again copper alloy easily processing and novel alloy with low cost, the high-strength novel copper alloy has been carried out a large amount of research both at home and abroad.
U.S. Optical Co., Ltd released the high strength CuNi9Sn6 alloy that designs for metal spectacle frame specially in 1978.This material not only is easy to processing, and cost is low, and compares with common copper-nickel alloy, and intensity and elasticity all are improved largely.Spectacle frame and German silver (CuNi15Zn13) spectacle frame made of this alloy carry out scrag test simultaneously, and the set deformation volume of CuNi9Sn6 alloy is only 1/2nd of German silver.The Mitsubishi metal is also released a kind of novel C uNi9Sn6 alloy soon.It is reported, this alloy surface has the beautiful tone of rose gold, its elasticity is equivalent to titanium alloy, and have cold-forming property and anti-welding softening performances such as good cold forging, cold punching, cold-forming, easy sanding and polishing, a kind of high-ductility, snappiness superlight material, and the relative nickelalloy of cost and precious metal lower, be suitable for making metal spectacle frame.The present domestic product that can reach external frame material C uNi9Sn6 copper alloy shell fragment level that there is no.And according to the literature as can be known, other various countries adopt respectively different complete processings, to make the service requirements of satisfying the frame material.
Summary of the invention
The preparation method who the purpose of this invention is to provide a kind of copper alloy elastic sheet material for frame utilizes the frame shell fragment of its making can reach the CuNi9Sn6 sheet alloy shell fragment performance of external imported product level.
For achieving the above object, the present invention takes following design:
A kind of preparation method of the copper alloy elastic sheet material for frame, the alloy cast ingot qualified with composition continues processing, and wherein, the one-tenth of this copper alloy is grouped into and mass percent is: Ni:9 ± 0.5; Sn:6 ± 0.5; The Cu surplus; Its method is as follows:
6) be warming up to 350 ± 5 ℃, ingot casting be incubated 30 ± 10 min under inert atmosphere, then hot rolling deformation 20 ± 5%, cover at 800 ± 5 ℃ of temperature at last and carry out homogenizing annealing under carbon or rare gas element;
7) ingot casting after homogenizing is carried out hot rolling cogging, general working rate 55～70% immediately;
8) after hot rolling cogging, carry out 650 ± 5 ℃/2h of centre stress relief annealing in vacuum annealing furnace, to remove work hardening;
9) annealing after carry out cold rolling, general working rate 70～80%, pass reduction 10%～15% is to thickness of slab 1.3 ± 0.1mm;
10) at last 1.3mm sheet material is carried out solid solution and shrend under inert atmosphere, cold rolling is to the thick 1.2mm of finished product; Wherein, at 800 ± 5 ℃ of lower solution treatment 20 ± 10min.
11) the finished product heavy-gauge sheeting is carried out straightening processing and effects on surface and carry out 30～37% concentrated hydrochloric acid or 60～70% vitriol oil cleanup acid treatment.
Preferably, in described step 11), the concentration of concentrated hydrochloric acid is 37%, and the concentration of the vitriol oil is 70%.
In described step 6), the time of covering at last homogenizing annealing under carbon or rare gas element at 800 ± 5 ℃ of temperature is 4～5.5h.
Because the finished surface after hot rolling cogging is more coarse, in described step 7), after hot rolling cogging, further finish-milling is surperficial.
The concrete preparation method of described copper alloy elastic sheet material for frame is as follows:
1) ratio range by each composition in copper alloy calculates, weighs and prepare oxygen free copper, general nickel, high purity tin material;
2) whole the getting the raw materials ready of oxygen free copper, general nickel and high purity tin put into alumina crucible, then put into vacuum medium frequency induction furnace;
3) vacuumize 4～6Pa; Heat up, temperature in the vacuum medium frequency induction furnace of regulating power 25KW → 35KW → 40KW, and control successively is so that alloy melting;
4) refining is 10～12 minutes, reduces subsequently power to 25KW, leads to argon gas, cast alloys in stove;
5) come out of the stove after cooling 30～35 minutes, obtain the qualified alloy cast ingot of composition after detection.
The present invention carries out melting in stove in a vacuum frequently according to CuNi9Sn6 alloy composition proportioning.Vacuum casting can be removed gas and the low melting point Volatile Elements in alloy, and under high temperature, Ni easily inhales H, causes material embrittlement, affects its mechanical property.And the oxide compound of Sn causes alloy surface harder, causes the difficult processing of material.Vacuum casting also can reduce the foreign matter content in the CuNi9Sn6 alloy.Be to shorten homogenization time, with enhance productivity, energy efficient, give certain deformation before homogenizing annealing.Because the alloy processing characteristics is relatively poor, take hot rolling cogging, follow-uply rollingly adopt cold rollingly, middle stress relief annealing is selected vacuum annealing furnace, avoids the surface that oxidation occurs.At last final dimension sheet material is carried out straightening processing and surface acid-washing processing, to reach the smooth of imported product and surface-brightening state.
The present invention is that positive exploration work has been done in the production of frame material C uNi9Sn6 copper alloy shell fragment, comprises alloy heat treatment process and complete processing and surface treatment research, and has obtained comparatively ideal effect.The breaking tenacity σ b＞600MPa of the copper alloy elastic sheet material that is used for frame that the present invention makes, be easy to cold-formed, and along rolling to not occurring the crack when crooked with vertical rolling to being 90 °.Product appearance reaches the external product level simultaneously.
Advantage of the present invention is:
1, CuNi9Sn6 copper alloy casting ingot of the present invention is vacuum casting, surface-brightening, and degree of oxidation is minimum, for good basis is established in the follow-up surface treatment of alloy;
2, give certain hot rolling deformation before CuNi9Sn6 copper alloy casting ingot homogenizing annealing, shortened homogenization time, improved production efficiency, saved energy consumption;
3, the CuNi9Sn6 copper alloy casting ingot is carried out homogenizing annealing under protective atmosphere; dendritic segregation and dissolving non-equilibrium phase have been eliminated; reduced the danger of slab hot-rolling cracking; improved the edge quality of strips or plates; improved material plasticity, simultaneously, due to the resistance to deformation that has reduced material; also can reduce deformation work consumption, improve the production efficiency of equipment.The oxidation of CuNi9Sn6 alloy surface, the generation that Ni inhales H and harder SnO2 oxide film have been prevented under protective atmosphere.Directly come out of the stove after homogenizing annealing is completed and carry out the hot rolling cogging of aximal deformation value, reduced rolling pass;
4, the sheet material near final dimension is adopted 800 ± 5 ℃/20min solid solution under inert atmosphere, shrend, last cold rolling is to the thick thermal treatment process of finished product, successfully obtained to satisfy the mechanical property of product requirement: product breaking tenacity σ b＞600MPa, be easy to cold-formed, and along rolling to not occurring the crack when crooked with vertical rolling to being 90 °;
5, final dimension sheet material is carried out straightening processing and surface acid-washing processing, make product reach the smooth of imported product and surface-brightening state.Contain Sn in the CuNi9Sn6 alloy, easily oxidation occurs and form the SnO2 that is difficult to remove, this oxide compound is insoluble in water, alcohol, diluted acid and alkali lye, but can be dissolved in the vitriol oil or concentrated hydrochloric acid, therefore adopt the vitriol oil or concentrated hydrochloric acid to scrub the sheet alloy surface.
Embodiment
The present invention is described further below in conjunction with specific embodiment.
Embodiment 1:
Adopt following preparation method, the 3kg that feeds intake, oxygen free copper, general nickel and high purity tin carry out proportioning by the composition of Ni:Sn:Cu=9:6:85, are respectively Ni, 270g; Sn, 180g; Cu, 2550g, and molten alloy.
Concrete preparation technology is as follows:
1) by standby each raw material of proportioning;
2) oxygen free copper of getting ready, general nickel and high purity tin starting material are put into alumina crucible, then put into vacuum medium frequency induction furnace;
3) vacuumize 5Pa, heat up, power is adjusted to 25KW → 35KW → 40KW successively, melt to impel alloy comprehensively at interval 5 minutes;
4) after furnace charge all melts, refining 10 minutes; Reduce power to 25KW, pour argon gas, begin casting;
5) come out of the stove after cooling 30 minutes, and be water-cooled to room temperature, ingot casting is of a size of thick 20mm, wide 130mm;
6) ingot blank is carried out 350 ℃/30min insulation under inert atmosphere, then begin rollingly, thickness of slab then covers the carbon homogenizing annealing by 20mm → 18.6mm → 17.0mm at 800～805 ℃ of temperature, and the time is 4h;
7) carry out immediately hot rolling cogging to thickness of slab 8.6mm, cogging is complete, and milling face to thickness is 7mm, to remove surface film oxide;
8) after hot rolling cogging, carry out 650 ℃/2h of centre stress relief annealing in vacuum annealing furnace, to remove work hardening;
9) mill face complete, carry out 650 ℃/2h of stress relief annealing in vacuum annealing furnace, then cold rolling, thickness of slab is by 7mm → 6.0mm → 5.3mm → 4.6mm → 4.2mm → 3.8mm → 3.5mm, carry out again 650 ℃/2h of centre stress relief annealing, 3.5mm → 3.0mm → 2.5mm → 2.0mm → 1.5mm → 1.3mm;
10) then 1.3mm sheet material is carried out 800 ℃/20min solid solution under inert atmosphere, shrend, cold rolling is to the thick 1.2mm of finished product;
11) finished product is adopted straightener carry out the template aligning, the alloy surface planeness reaches the imported product standard.Sheet material immersion concentration after aligning at last is 37% concentrated hydrochloric acid, and uses copper brush that its surface is scrubbed, and then water rinses, and to remove zone of oxidation and the spot on surface, surface quality reaches the imported product surface standard.
Embodiment 2:
Method is with embodiment 1, and difference is: the 3kg that feeds intake, and oxygen free copper, general nickel and high purity tin carry out proportioning by the composition of Ni:Sn:Cu=9.5:6.5:85, are respectively Ni, 285g; Sn, 180g; Cu, 2535g.
Embodiment 3:
Method is with embodiment 1, and difference is: the 3kg that feeds intake, and oxygen free copper, general nickel and high purity tin carry out proportioning by the composition of Ni:Sn:Cu=9:6.5:84.5, are respectively Ni, 270g; Sn, 195g; Cu, 2535g.
Embodiment 4:
Method is with embodiment 1, and difference is: the 3kg that feeds intake, and oxygen free copper, general nickel and high purity tin carry out proportioning by the composition of Ni:Sn:Cu=9.5:5.5:85, are respectively Ni, 285g; Sn, 165g; Cu, 2550g.
Embodiment 5:
Method is with embodiment 1, and difference is following steps:
6) ingot blank is carried out 350 ℃/30min insulation under inert atmosphere, then begin rollingly, thickness of slab then carries out homogenizing annealing under rare gas element by 20mm → 18.2mm → 16.8mm → 15.8;
7) carry out immediately hot rolling cogging to 7mm, cogging is complete, and milling face to thickness is 5.0mm, to remove surface film oxide;
8) after hot rolling cogging, carry out 650 ℃/2h of centre stress relief annealing in vacuum annealing furnace, to remove work hardening;
9) mill face complete, carry out 650 ℃/2h of stress relief annealing in vacuum annealing furnace, then carry out cold rolling according to pass deformation, thickness of slab is by 5.0mm → 4.6mm → 4.2mm → 3.8mm → 3.5mm, carry out again 650 ℃/2h of centre stress relief annealing, continue subsequently cold rolling 3.5mm → 3.0mm → 2.5mm → 2.0mm → 1.5mm → 1.3mm.
Embodiment 6:
Method is with embodiment 1, and difference is: in step 6), ingot blank is being carried out insulation 40 min at 345 ℃ of temperature under inert atmosphere.
Embodiment 7:
Method is with embodiment 1, and difference is: in step 11), be 30% concentrated hydrochloric acid with the immersion of the sheet material after aligning concentration.
Embodiment 8:
Method is with embodiment 1, and difference is: in step 11), be 70% the vitriol oil with the immersion of the sheet material after aligning concentration.
Embodiment 9:
Method is with embodiment 1, and difference is: in step 11), be 60% the vitriol oil with the immersion of the sheet material after aligning concentration.
The various embodiments described above can some variations in addition under not departing from the scope of the present invention, thus above explanation comprise should be considered as exemplary, but not in order to limit the protection domain of the present patent application patent.
Claims (5)
1. a preparation method who is used for the copper alloy elastic sheet material of frame, process the alloy cast ingot that composition is qualified, and wherein, the one-tenth of this copper alloy is grouped into and mass percent is: Ni:9 ± 0.5; Sn:6 ± 0.5; The Cu surplus; It is characterized in that method is as follows:
6) be warming up to 350 ± 5 ℃, ingot casting be incubated 30 ± 10 min under inert atmosphere, then hot rolling deformation 20 ± 5%, cover at 800 ± 5 ℃ of temperature at last and carry out homogenizing annealing under carbon or rare gas element;
7) ingot casting after homogenizing is carried out hot rolling cogging immediately, or general working rate 55～70%;
8) after hot rolling cogging, carry out 650 ± 5 ℃/2h of centre stress relief annealing in vacuum annealing furnace, to remove work hardening;
9) annealing after carry out cold rolling, general working rate 70～80%, pass reduction 10%～15% is to thickness of slab 1.3 ± 0.1mm;
10) at last 1.3mm sheet material is carried out solid solution and shrend under inert atmosphere, cold rolling is to the thick 1.2mm of finished product; Wherein, at 800 ± 5 ℃ of lower solution treatment 20 ± 10min;
11) the finished product heavy-gauge sheeting is carried out straightening processing and effects on surface and carry out 30～37% concentrated hydrochloric acid or 60～70% vitriol oil cleanup acid treatment.
2. the preparation method of the copper alloy elastic sheet material for frame according to claim 1, it is characterized in that: in described step 11), the concentration of concentrated hydrochloric acid is 37%, the concentration of the vitriol oil is 70%.
3. the preparation method of the copper alloy elastic sheet material for frame according to claim 1 is characterized in that the preparation method of described alloy cast ingot is as follows:
1) ratio range by each composition in copper alloy calculates, weighs and prepare oxygen free copper, general nickel, high purity tin material;
2) whole the getting the raw materials ready of oxygen free copper, general nickel and high purity tin put into alumina crucible, then put into vacuum medium frequency induction furnace;
3) vacuumize 4～6Pa; Heat up, temperature in the vacuum medium frequency induction furnace of regulating power 25KW → 35KW → 40KW, and control successively is so that alloy melting;
4) refining is 10～12 minutes, reduces subsequently power to 25KW, leads to argon gas, cast alloys in stove;
5) come out of the stove after cooling 30～35 minutes, obtain the qualified alloy cast ingot of composition after detection.
4. the preparation method of the copper alloy elastic sheet material for frame according to claim 1, it is characterized in that: in described step 6), the time of covering at last homogenizing annealing under carbon or rare gas element at 800 ± 5 ℃ of temperature is 4～5.5h.
5. the preparation method of the copper alloy elastic sheet material for frame according to claim 1 is characterized in that: in described step 7), after hot rolling cogging or carry out further finish-milling face.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110428276.6A CN103173647B (en) | 2011-12-20 | 2011-12-20 | Making method of elastic copper alloy sheet used for spectacle frame |
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| CN201110428276.6A CN103173647B (en) | 2011-12-20 | 2011-12-20 | Making method of elastic copper alloy sheet used for spectacle frame |
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| CN103173647A true CN103173647A (en) | 2013-06-26 |
| CN103173647B CN103173647B (en) | 2015-05-13 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105483428A (en) * | 2014-09-16 | 2016-04-13 | 陈国良 | Production process of cupronickel spectacle frame |
| CN106636731A (en) * | 2016-10-31 | 2017-05-10 | 江西凯安智能股份有限公司 | Processing technology for high-strength and high-extensibility brass alloy strip |
| CN109429497A (en) * | 2017-06-22 | 2019-03-05 | 日本精线株式会社 | Spring copper alloy superfine wire and its manufacturing method |
| CN113857251A (en) * | 2021-09-26 | 2021-12-31 | 马鞍山钢铁股份有限公司 | Electrical steel cold rolling device and method for increasing reduction rate |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4046596A (en) * | 1975-06-27 | 1977-09-06 | American Optical Corporation | Process for producing spectacle frames using an age-hardenable nickel-bronze alloy |
-
2011
- 2011-12-20 CN CN201110428276.6A patent/CN103173647B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4046596A (en) * | 1975-06-27 | 1977-09-06 | American Optical Corporation | Process for producing spectacle frames using an age-hardenable nickel-bronze alloy |
Non-Patent Citations (1)
| Title |
|---|
| 王振显: "B82白铜眼镜架材料的研制", 《广东有色金属学报》, vol. 16, no. 3, 30 September 2006 (2006-09-30), pages 180 - 183 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105483428A (en) * | 2014-09-16 | 2016-04-13 | 陈国良 | Production process of cupronickel spectacle frame |
| CN106636731A (en) * | 2016-10-31 | 2017-05-10 | 江西凯安智能股份有限公司 | Processing technology for high-strength and high-extensibility brass alloy strip |
| CN106636731B (en) * | 2016-10-31 | 2018-10-23 | 江西凯安智能股份有限公司 | High intensity height extends the processing technology of brass alloys band |
| CN109429497A (en) * | 2017-06-22 | 2019-03-05 | 日本精线株式会社 | Spring copper alloy superfine wire and its manufacturing method |
| CN109429497B (en) * | 2017-06-22 | 2021-07-09 | 日本精线株式会社 | Copper alloy ultra-fine wire for spring and method for producing same |
| CN113857251A (en) * | 2021-09-26 | 2021-12-31 | 马鞍山钢铁股份有限公司 | Electrical steel cold rolling device and method for increasing reduction rate |
| CN113857251B (en) * | 2021-09-26 | 2024-03-22 | 马鞍山钢铁股份有限公司 | Cold rolling device and cold rolling method for electrical steel with increased reduction rate |
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Inventor after: Chen Wenjing Inventor after: Wang Wei Inventor after: Zhang Zhen Inventor after: Zhao Hongchao Inventor after: Chen Lijian Inventor before: Chen Wenjing Inventor before: Wang Wei Inventor before: Zhang Zhen Inventor before: Zhao Hongchao Inventor before: Chen Lijian |