CN104152742B - A kind of high-performance tin-phosphor bronze line and production method thereof - Google Patents
A kind of high-performance tin-phosphor bronze line and production method thereof Download PDFInfo
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Abstract
The invention discloses a kind of high-performance tin-phosphor bronze line and production method thereof, does is the weight percentage of each element: 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.After raw material founding cast Φ 12mm bar base, carry out five passage processing.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, thus guarantee the even of material property, the linear energy of the tin-phosphor bronze produced is even, any surface finish, meets the service requirements of high-end electronic connector industry customer.
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 product 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 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.
Tin-phosphor bronze linearly energy and the surface that prior art is produced, cannot meet the service requirements of high-end electronic connector industry customer.
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 kind of high-performance tin-phosphor bronze line, the weight percentage of each element is as follows:
Sn4.3-5.0%, P0.06-0.12%, 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, heat up after melting and 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 controls at 1150 ~ 1280 DEG C, 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, instead pushes away length 0.5-2.7mm, instead push away time 0.1-0.3s, cooling water inflow 0.1-0.3MPa;
(2) plane processing, is drawn
Gained bar base is carried out five passage processing, and pass reduction controls at 50-80%, and annealing adopts pit furnace or bell furnace;
Adopt well furnace, temperature is 450-500 DEG C, heating-up time 50-80min, soaking time 120-160min;
Adopt cover annealing, temperature is 460-500 DEG C, heating-up time 100-150min, soaking time 200-260min.
Further, pull out qualified bar base in step (1) 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, and carry out pickling by conventional acid washing lotion after annealing, working modulus is 50%.
Ф 8.5mm → Ф 5.6mm procedure, adopts continuously elongated technique, and annealing adopts pit furnace, and then carry out pickling by conventional acid washing lotion, 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, thus guarantee the even of material property, the linear energy of the tin-phosphor bronze produced is even, any surface finish, meets the service requirements of high-end electronic connector industry customer.The content of ferro element, when a certain scope minor fluctuations, can cause the larger change of grain fineness number, thus affects performance and the surface smoothness of material.Compare with prior art, 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 the tin-phosphor bronze line of preparation within 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 tin-phosphor bronze line 200 times of metaloscope figure prepared by embodiment 1;
Fig. 2 is tin-phosphor bronze line 500 times of metaloscope figure prepared by embodiment 1;
Fig. 3 is tin-phosphor bronze line 200 times of metaloscope figure prepared by embodiment 2;
Fig. 4 is tin-phosphor bronze line 500 times of metaloscope figure prepared by embodiment 2;
Fig. 5 is tin-phosphor bronze line 200 times of metaloscope figure prepared by embodiment 3;
Fig. 6 is tin-phosphor bronze line 500 times of metaloscope figure prepared by embodiment 3.
Embodiment
Embodiment 1
A kind of high-performance tin-phosphor bronze line, the material containing following weight percentage:
Sn4.3%, P0.07%, Zn0.03%, Fe0.005%, Si0.02%, Ni0.04%, 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, heat up after melting and add block tin, stir after fusing 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 controls at 1200 DEG C, draws each parameter to be: draw speed 0.92m/min, throwing length 13mm, stretching time 0.3s, draws 0.3s between the stopping time, instead pushes away length 1.5mm, instead pushes away time 0.15s, cooling water inflow 0.3MPa;
(2) plane processing, is drawn
Gained bar base is carried out 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 DEG C, heating-up time 60min, soaking time 150min, and then conventional acid washing lotion carries out pickling.
Further, Φ 12mm → Ф 8.5mm procedure, annealing adopts pit furnace, and carry out pickling by conventional acid washing lotion after annealing, 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 DEG C, heating-up time 60min, soaking time 150min, and then 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 temperature is 490 DEG C, heating-up time 120min, soaking time 240min, and working modulus is 75%.
Ф 2.8mm → Ф 1.9mm adopts and connects drawing process, and annealing adopts bell furnace, and temperature is 480 DEG C, heating-up time 120min, soaking time 240min, and 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, be partial to 0.004mm, crystal grain level index 14 ~ 12.3, any surface finish is without blackspot, and stable performance, tension 375-385 (MPa), fluctuates within 10MPa.
Embodiment 2
A kind of high-performance tin-phosphor bronze line, the material containing following weight percentage:
Sn4.5%, P0.08%, Zn0.02%, Fe0.0045%, Si0.02%, Ni0.05%, Cd0.005%, 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, heat up after melting and add block tin, stir after fusing 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 controls at 1210 DEG C, draws each parameter to be: draw speed 0.9m/min, throwing length 12mm, stretching time 0.2s, draws 0.3s between the stopping time, instead pushes away length 1.6mm, instead pushes away time 0.3s, cooling water inflow 0.2MPa;
(2) plane processing, is drawn
Gained bar base is carried out 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 DEG C, heating-up time 55min, soaking time 120min, and then conventional acid washing lotion carries out pickling.
Further, Φ 12mm → Ф 8.5mm procedure, annealing adopts pit furnace, and carry out pickling by conventional acid washing lotion after annealing, 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 DEG C, heating-up time 55min, soaking time 120min, and then 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 temperature is 460 DEG C, heating-up time 100min, soaking time 260min, and working modulus is 75%.
Ф 2.8mm → Ф 1.9mm adopts and connects drawing process, and annealing adopts bell furnace, and temperature is 485 DEG C, heating-up time 100min, soaking time 250min, and 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, be partial to 0.005mm, crystal grain level index 14 ~ 12.3, any surface finish is without blackspot, and stable performance, tension 378-385 (MPa), fluctuates within 10MPa.
Embodiment 3
A kind of high-performance tin-phosphor bronze line, the material containing following weight percentage:
Sn4.7%, P0.09%, Zn0.025%, Fe0.004%, Si0.03%, Ni0.03%, 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, heat up after melting and add block tin, stir after fusing 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 controls at 1220 DEG C, draws each parameter to be: draw speed 1m/min, throwing length 14mm, stretching time 0.4s, draws 0.2s between the stopping time, instead pushes away length 1mm, instead pushes away time 0.1s, cooling water inflow 0.2MPa
(2) plane processing, is drawn
Gained bar base is carried out 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 DEG C, heating-up time 55min, soaking time 155min, and then conventional acid washing lotion carries out pickling.
Further, Φ 12mm → Ф 8.5mm procedure, annealing adopts pit furnace, and carry out pickling by conventional acid washing lotion after annealing, 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 DEG C, heating-up time 55min, soaking time 155min, and then 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 temperature is 490 DEG C, heating-up time 140min, soaking time 250min, and working modulus is 75%.
Ф 2.8mm → Ф 1.9mm adopts and connects drawing process, and annealing adopts bell furnace, and temperature is 500 DEG C, heating-up time 120min, soaking time 260min, and 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, be partial to 0.005mm, crystal grain level index 12.3 ~ 11.0, any surface finish is without blackspot, and stable performance, tension 378-385 (MPa), fluctuates within 10MPa.
Claims (9)
1. a high-performance tin-phosphor bronze line, is characterized in that, described tin-phosphor bronze line each element wt percentage composition is as follows:
Sn4.3-5.0%, P0.06-0.12%, Zn≤0.03%, Fe≤0.005%, Si ﹤ 0.03%, Ni≤0.05%, Cd≤0.005%, impurity summation≤0.02%, surplus are Cu;
The production method of described 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, heat up after melting and 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 controls at 1150 ~ 1280 DEG C, 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, instead pushes away length 0.5-2.7mm, instead push away time 0.1-0.3s, cooling water inflow 0.1-0.3MPa;
(2) plane processing, is drawn
Gained bar base is carried out 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 DEG C, heating-up time 50-80min, soaking time 120-160min;
Adopt cover annealing, temperature is 460-500 DEG C, heating-up time 100-150min, soaking time 200-260min.
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. high-performance tin-phosphor bronze line according to claim 1, is characterized in that, pulls out qualified bar base and be of a size of Φ 12mm in step (1).
4. high-performance tin-phosphor bronze line according to claim 1, 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.
5. high-performance tin-phosphor bronze line according to claim 4, is characterized in that, Φ 12mm → Ф 8.5mm procedure, and annealing adopts pit furnace, and carry out pickling by conventional acid washing lotion after annealing, working modulus is 50%.
6. high-performance tin-phosphor bronze line according to claim 4, is characterized in that, Ф 8.5mm → Ф 5.6mm procedure, adopts continuously elongated technique, and annealing adopts pit furnace, and then carry out pickling by conventional acid washing lotion, working modulus is 57%.
7. high-performance tin-phosphor bronze line according to claim 4, 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%.
8. high-performance tin-phosphor bronze line according to claim 4, is characterized in that, Ф 2.8mm → Ф 1.9mm adopts continuously elongated technique, and annealing adopts bell furnace, and working modulus is 54%.
9. high-performance tin-phosphor bronze line according to claim 4, 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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| CN105274386B (en) * | 2015-10-30 | 2017-05-17 | 北京有色金属研究总院 | High-performance complex multi-element phosphor bronze alloy material and preparation method thereof |
| CN105886832B (en) * | 2016-05-17 | 2017-11-14 | 安徽鑫科铜业有限公司 | A kind of bronze bar and its production method |
| 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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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. |