CN104152742A - High-performance tin-phosphor bronze wire and production method thereof - Google Patents
High-performance tin-phosphor bronze wire and production method thereof Download PDFInfo
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Abstract
The invention discloses a high-performance tin-phosphor bronze wire and a production method thereof. The high-performance tin-phosphor bronze wire comprises the following elements in percentage by weight: 4.3-5.0 percent of Sn, 0.06-0.12 percent of P, 0-0.03 percent of Zn, 0-0.005 percent of Fe, less than 0.0.3 percent of Si, 0-0.05 percent of Ni, 0-0.005 percent of Cd, 0-0.02 percent of total impurities, and Cu in balancing amount. The materials are smelted and drawn to cast a rod blank with the diameter of 12 mm, and then the rod blank is subjected to five-pass processing. The required optimal grain size is achieved by controlling the contents of minor elements like Fe in the tin-phosphor bronze wire and adjusting the annealing temperature, heat preservation time and processing rate in the processing process, therefore, that the material performance is uniform is ensured, and the produced tin-phosphor bronze wire has uniform performance and a smooth surface, and can meet the use requirements of customers in the high-end electronic connector assembly industry.
Description
Technical field
The present invention relates to a kind of high-performance tin-phosphor bronze line and production method thereof.
Background technology
Tin-phosphor bronze has high intensity, hardness, wear resistance and erosion resistance, for electronics components and parts, high-performance plug-in unit, connection terminal etc.
C51000 tin-phosphor bronze line products is mainly used in high-end electronic connector industry, because client is higher to the performance uniformity of this product, surface requirements, at present, mainly from external import.The domestic production technology of only having only a few producer to grasp this product, but the product quality of producing seldom has and can reach imported product level completely.
The linear energy of tin-phosphor bronze and surface that prior art is produced, cannot meet high-end electronic connector industry customer's service requirements.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of high-performance tin-phosphor bronze line and production method thereof, by the control of iron content in tin-phosphor bronze line and the optimization of production technique, the product performance of gained evenly, any surface finish.
A high-performance tin-phosphor bronze line, the weight percentage of each element is as follows:
Sn 4.3-5.0%, P 0.06-0.12%, Zn≤0.03%, Fe≤0.005%, Si ﹤ 0.03%, Ni≤0.05%, Cd≤0.005%, impurity summation≤0.02%, surplus are Cu.
Preferably, the weight percentage of Fe is 0.0045%-0.005%.
A production method for high-performance tin-phosphor bronze line, comprises the following steps:
(1), founding
According to above-mentioned each constituent content formula, electrolytic copper, phosphor bronze alloy are joined in casting furnace, cover charcoal, after intensification fusing, add block tin, stir and drag for slag, sampling analysis, after composition meets the requirements, cover destructive distillation charcoal, by casting temperature, the control of drawing each parameter, cooling water inflow, pull out qualified bar base;
Casting temperature is controlled at 1150～1280 ℃, draws each parameter to be: draw speed 0.5-1.5m/min, throwing length 10-19mm, stretching time 0.1-0.5s, draws 0.1-0.5s between the stopping time, the anti-length 0.5-2.7mm that pushes away, the anti-time 0.1-0.3s that pushes away, cooling water inflow 0.1-0.3MPa;
(2), draw plane processing
Gained bar base is carried out to five passage processing, and pass reduction is controlled at 50-80%, and annealing adopts pit furnace or bell furnace;
Adopt well furnace, temperature is 450-500 ℃, heating-up time 50-80min, soaking time 120-160min;
Adopt cover annealing, temperature is 460-500 ℃, heating-up time 100-150min, soaking time 200-260min.
Further, in step (1), pull out qualified bar base and be of a size of Φ 12mm.
Further, five passage complete processings are:
Φ 12mm → Ф 8.5mm (annealing and pickling) → Ф 5.6mm (annealing and pickling) → Ф 2.8m (annealing and pickling) → Ф 1.9mm (annealing and pickling) → (the little company of drawing moves back) Ф 0.9mm.
Wherein, Φ 12mm → Ф 8.5mm procedure, annealing adopts pit furnace, after annealing, by conventional acid washing lotion, carries out pickling, and working modulus is 50%.
Ф 8.5mm → Ф 5.6mm procedure, adopts continuously elongated technique, and annealing adopts pit furnace, then by conventional acid washing lotion, carries out pickling, and working modulus is 57%.
Ф 5.6mm → Ф 2.8m procedure adopts and draws planing skill, and annealing adopts bell furnace, and working modulus is 75%.
Ф 2.8mm → Ф 1.9mm adopts continuously elongated technique, and annealing adopts bell furnace, and working modulus is 54%.
Ф 1.9mm → Ф 0.9mm adopts the little company of drawing to move back equipment, and working modulus is 78%.
The present invention is by the adjustment of annealing temperature, soaking time, working modulus in micronutrient levels, the complete processings such as iron in control tin-phosphor bronze line, reach required best grain fineness number, thereby guarantee the even of material property, the tin-phosphor bronze produced linear can be evenly, any surface finish, meet high-end electronic connector industry customer's service requirements.The content of ferro element, when a certain scope minor fluctuations, can cause the larger variation of grain fineness number, thereby affects performance and the surface smoothness of material.With prior art, compare, iron level≤0.005% in tin-phosphor bronze line prepared by the present invention, and annealing temperature, soaking time, working modulus in complete processing are adjusted, make the performance inconsistency of tin-phosphor bronze line of preparation in 10MPa, surface-brightening, bright and clean, without blackspot, scratch, lipid and broken string, meet the demand of high-end electronic connector industry.
Accompanying drawing explanation
Fig. 1 is 200 times of metaloscope figure of tin-phosphor bronze line of embodiment 1 preparation;
Fig. 2 is 500 times of metaloscope figure of tin-phosphor bronze line of embodiment 1 preparation;
Fig. 3 is 200 times of metaloscope figure of tin-phosphor bronze line of embodiment 2 preparations;
Fig. 4 is 500 times of metaloscope figure of tin-phosphor bronze line of embodiment 2 preparations;
Fig. 5 is 200 times of metaloscope figure of tin-phosphor bronze line of embodiment 3 preparations;
Fig. 6 is 500 times of metaloscope figure of tin-phosphor bronze line of embodiment 3 preparations.
Embodiment
Embodiment 1
A high-performance tin-phosphor bronze line, the material that contains following weight percentage:
Sn 4.3%, P 0.07%, Zn 0.03%, Fe 0.005%, Si 0.02%, Ni 0.04%, Cd0.005%, impurity summation 0.02%, surplus are Cu.
A production method for high-performance tin-phosphor bronze line, comprises the following steps:
(1), founding
According to above-mentioned formula, electrolytic copper, phosphor bronze alloy are joined in casting furnace, cover charcoal, after intensification fusing, add block tin, after fusing, stir and drag for slag, sampling analysis, after composition meets the requirements, cover destructive distillation charcoal, by casting temperature, the control of drawing each parameter, cooling water inflow, pull out the qualified bar base of Φ 12mm;
Casting temperature is controlled at 1200 ℃, draws each parameter to be: draw speed 0.92m/min, and throwing length 13mm, stretching time 0.3s, draws 0.3s between the stopping time, the anti-length 1.5mm that pushes away, the anti-time 0.15s that pushes away, cooling water inflow 0.3MPa;
(2), draw plane processing
Gained bar base is carried out to five passage processing: Φ 12mm → Ф 8.5mm (annealing and pickling) → Ф 5.6mm (annealing and pickling) → Ф 2.8m (annealing and pickling) → Ф 1.9mm (annealing and pickling) → (the little company of drawing moves back) Ф 0.9mm.
Wherein, Φ 12mm → Ф 8.5mm procedure, annealing adopts pit furnace, and temperature is 460 ℃, heating-up time 60min, soaking time 150min, then conventional acid washing lotion is carried out pickling.
Further, Φ 12mm → Ф 8.5mm procedure, annealing adopts pit furnace, after annealing, by conventional acid washing lotion, carries out pickling, and working modulus is 50%.
Ф 8.5mm → Ф 5.6mm procedure, the company's of employing drawing process, annealing adopts pit furnace, and temperature is 480 ℃, heating-up time 60min, soaking time 150min, then conventional acid washing lotion is carried out pickling, and working modulus is 57%.
Ф 5.6mm → Ф 2.8m procedure adopts and draws planing skill, and annealing adopts bell furnace, and temperature is 490 ℃, heating-up time 120min, and soaking time 240min, working modulus is 75%.
Ф 2.8mm → Ф 1.9mm adopts and connects drawing process, and annealing adopts bell furnace, and temperature is 480 ℃, heating-up time 120min, and soaking time 240min, working modulus is 54%.
Ф 1.9mm → Ф 0.9mm adopts the little company of drawing of finished product to move back equipment, and working modulus is 78%.
The tin-phosphor bronze line grain fineness number 0.004-0.005 (mm) of preparation, is partial to 0.004mm, crystal grain level index 14～12.3, and any surface finish is without blackspot, stable performance, tension 375-385 (MPa), fluctuation is in 10MPa.
Embodiment 2
A high-performance tin-phosphor bronze line, the material that contains following weight percentage:
Sn 4.5%, P 0.08%, Zn 0.02%, Fe 0.0045%, Si 0.02%, Ni 0.05%, Cd 0.005%, impurity summation 0.01%, surplus are Cu.
A production method for high-performance tin-phosphor bronze line, comprises the following steps:
(1), founding
According to above-mentioned formula, electrolytic copper, phosphor bronze alloy are joined in casting furnace, cover charcoal, after intensification fusing, add block tin, after fusing, stir and drag for slag, sampling analysis, after composition meets the requirements, cover destructive distillation charcoal, by casting temperature, the control of drawing each parameter, cooling water inflow, pull out the qualified bar base of Φ 12mm; Casting temperature is controlled at 1210 ℃, draws each parameter to be: draw speed 0.9m/min, and throwing length 12mm, stretching time 0.2s, draws 0.3s between the stopping time, the anti-length 1.6mm that pushes away, the anti-time 0.3s that pushes away, cooling water inflow 0.2MPa;
(2), draw plane processing
Gained bar base is carried out to five passage processing: Φ 12mm → Ф 8.5mm (annealing and pickling) → Ф 5.6mm (annealing and pickling) → Ф 2.8m (annealing and pickling) → Ф 1.9mm (annealing and pickling) → (the little company of drawing moves back) Ф 0.9mm.
Wherein, Φ 12mm → Ф 8.5mm procedure, annealing adopts pit furnace, and temperature is 480 ℃, heating-up time 55min, soaking time 120min, then conventional acid washing lotion is carried out pickling.
Further, Φ 12mm → Ф 8.5mm procedure, annealing adopts pit furnace, after annealing, by conventional acid washing lotion, carries out pickling, and working modulus is 50%.
Ф 8.5mm → Ф 5.6mm procedure, the company's of employing drawing process, annealing adopts pit furnace, and temperature is 480 ℃, heating-up time 55min, soaking time 120min, then conventional acid washing lotion is carried out pickling, and working modulus is 57%.
Ф 5.6mm → Ф 2.8m procedure adopts and draws planing skill, and annealing adopts bell furnace, and temperature is 460 ℃, heating-up time 100min, and soaking time 260min, working modulus is 75%.
Ф 2.8mm → Ф 1.9mm adopts and connects drawing process, and annealing adopts bell furnace, and temperature is 485 ℃, heating-up time 100min, and soaking time 250min, working modulus is 54%.
Ф 1.9mm → Ф 0.9mm adopts the little company of drawing of finished product to move back equipment, and working modulus is 78%.
The tin-phosphor bronze line grain fineness number 0.004-0.005 (mm) of preparation, is partial to 0.005mm, crystal grain level index 14～12.3, and any surface finish is without blackspot, stable performance, tension 378-385 (MPa), fluctuation is in 10MPa.
Embodiment 3
A high-performance tin-phosphor bronze line, the material that contains following weight percentage:
Sn 4.7%, P 0.09%, Zn 0.025%, Fe 0.004%, Si 0.03%, Ni 0.03%, Cd 0.005%, impurity summation 0.02%, surplus are Cu.
A production method for high-performance tin-phosphor bronze line, comprises the following steps:
(1), founding
According to above-mentioned formula, electrolytic copper, phosphor bronze alloy are joined in casting furnace, cover charcoal, after intensification fusing, add block tin, after fusing, stir and drag for slag, sampling analysis, after composition meets the requirements, cover destructive distillation charcoal, by casting temperature, the control of drawing each parameter, cooling water inflow, pull out the qualified bar base of Φ 12mm;
Casting temperature is controlled at 1220 ℃, draws each parameter to be: draw speed 1m/min, and throwing length 14mm, stretching time 0.4s, draws 0.2s between the stopping time, the anti-length 1mm that pushes away, the anti-time 0.1s that pushes away, cooling water inflow 0.2MPa
(2), draw plane processing
Gained bar base is carried out to five passage processing: Φ 12mm → Ф 8.5mm (annealing and pickling) → Ф 5.6mm (annealing and pickling) → Ф 2.8m (annealing and pickling) → Ф 1.9mm (annealing and pickling) → (the little company of drawing moves back) Ф 0.9mm.
Wherein, Φ 12mm → Ф 8.5mm procedure, annealing adopts pit furnace, and temperature is 450 ℃, heating-up time 55min, soaking time 155min, then conventional acid washing lotion is carried out pickling.
Further, Φ 12mm → Ф 8.5mm procedure, annealing adopts pit furnace, after annealing, by conventional acid washing lotion, carries out pickling, and working modulus is 50%.
Ф 8.5mm → Ф 5.6mm procedure, the company's of employing drawing process, annealing adopts pit furnace, and temperature is 450 ℃, heating-up time 55min, soaking time 155min, then conventional acid washing lotion is carried out pickling, and working modulus is 57%.
Ф 5.6mm → Ф 2.8m procedure adopts and draws planing skill, and annealing adopts bell furnace, and temperature is 490 ℃, heating-up time 140min, and soaking time 250min, working modulus is 75%.
Ф 2.8mm → Ф 1.9mm adopts and connects drawing process, and annealing adopts bell furnace, and temperature is 500 ℃, heating-up time 120min, and soaking time 260min, working modulus is 54%.
Ф 1.9mm → Ф 0.9mm adopts the little company of drawing of finished product to move back equipment, and working modulus is 80%.
The tin-phosphor bronze line grain fineness number 0.005～0.007 (mm) of preparation, is partial to 0.005mm, crystal grain level index 12.3～11.0, and any surface finish is without blackspot, stable performance, tension 378-385 (MPa), fluctuation is in 10MPa.
Claims (10)
1. a high-performance tin-phosphor bronze line, is characterized in that, each element wt percentage composition of described tin-phosphor bronze line is as follows:
Sn 4.3-5.0%, P 0.06-0.12%, Zn≤0.03%, Fe≤0.005%, Si ﹤ 0.03%, Ni≤0.05%, Cd≤0.005%, impurity summation≤0.02%, surplus are Cu.
2. high-performance tin-phosphor bronze line according to claim 1, is characterized in that, the weight percentage of Fe is 0.0045%-0.005%.
3. a production method for high-performance tin-phosphor bronze line claimed in claim 1, is characterized in that, comprises the following steps:
(1), founding
According to above-mentioned each constituent content formula, electrolytic copper, phosphor bronze alloy are joined in casting furnace, cover charcoal, after intensification fusing, add block tin, stir and drag for slag, sampling analysis, after composition meets the requirements, cover destructive distillation charcoal, by casting temperature, the control of drawing each parameter, cooling water inflow, pull out qualified bar base;
Casting temperature is controlled at 1150～1280 ℃, draws each parameter to be: draw speed 0.5-1.5m/min, throwing length 10-19mm, stretching time 0.1-0.5s, draws 0.1-0.5s between the stopping time, the anti-length 0.5-2.7mm that pushes away, the anti-time 0.1-0.3s that pushes away, cooling water inflow 0.1-0.3MPa;
(2), draw plane processing
Gained bar base is carried out to five passage processing, and pass reduction can be controlled in 50-80%, and annealing adopts pit furnace or bell furnace;
Adopt well furnace, temperature is 450-500 ℃, heating-up time 50-80min, soaking time 120-160min;
Adopt cover annealing, temperature is 460-500 ℃, heating-up time 100-150min, soaking time 200-260min.
4. production method according to claim 3, is characterized in that, pulls out qualified bar base and be of a size of Φ 12mm in step (1).
5. production method according to claim 3, is characterized in that, five passage complete processings are Φ 12mm → Ф 8.5mm → Ф 5.6mm → Ф 2.8m → Ф 1.9mm → Ф 0.9mm.
6. production method according to claim 5, is characterized in that, Φ 12mm → Ф 8.5mm procedure, and annealing adopts pit furnace, after annealing, by conventional acid washing lotion, carries out pickling, and working modulus is 50%.
7. production method according to claim 5, is characterized in that, Ф 8.5mm → Ф 5.6mm procedure, adopts continuously elongated technique, and annealing adopts pit furnace, then by conventional acid washing lotion, carries out pickling, and working modulus is 57%.
8. production method according to claim 5, is characterized in that, Ф 5.6mm → Ф 2.8m procedure adopts and draws planing skill, and annealing adopts bell furnace, and working modulus is 75%.
9. production method according to claim 5, is characterized in that, Ф 2.8mm → Ф 1.9mm adopts continuously elongated technique, and annealing adopts bell furnace, and working modulus is 54%.
10. production method according to claim 5, is characterized in that, Ф 1.9mm → Ф 0.9mm adopts the little company of drawing to move back equipment, and working modulus is 78%.
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Cited By (4)
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| CN105274386A (en) * | 2015-10-30 | 2016-01-27 | 北京有色金属研究总院 | High-performance complex multi-element phosphor bronze alloy material and preparation method thereof |
| CN105886832A (en) * | 2016-05-17 | 2016-08-24 | 安徽鑫科新材料股份有限公司 | Bronze bar and production method thereof |
| CN107828983A (en) * | 2017-11-07 | 2018-03-23 | 江西理工大学 | A kind of copper chromium titanium zirconium rod of metal alloy and its continuous preparation method |
| CN114214530A (en) * | 2021-12-06 | 2022-03-22 | 宁波金田铜业(集团)股份有限公司 | Preparation method of corrosion-resistant tin-phosphor bronze wire |
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| CN107828983A (en) * | 2017-11-07 | 2018-03-23 | 江西理工大学 | A kind of copper chromium titanium zirconium rod of metal alloy and its continuous preparation method |
| CN114214530A (en) * | 2021-12-06 | 2022-03-22 | 宁波金田铜业(集团)股份有限公司 | Preparation method of corrosion-resistant tin-phosphor bronze wire |
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| CN104152742B (en) | 2016-04-20 |
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Effective date of registration: 20170120 Address after: 241009 Anhui city of Wuhu Province, Hunan Road economic and Technological Development Zone No. 21 Patentee after: Anhui Xinke Copper Co. Ltd. Address before: 241009 Zhujianglu Road economic and Technological Development Zone, Anhui, No. 3, Patentee before: Anhui Xinke New Material Co., Ltd. |