CN103878551A - Method for producing high-strength copper nickel silica lead frame material - Google Patents
Method for producing high-strength copper nickel silica lead frame material Download PDFInfo
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- CN103878551A CN103878551A CN201410120368.1A CN201410120368A CN103878551A CN 103878551 A CN103878551 A CN 103878551A CN 201410120368 A CN201410120368 A CN 201410120368A CN 103878551 A CN103878551 A CN 103878551A
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- copper nisiloy
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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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
- C22C9/06—Alloys based on copper with nickel or cobalt as the next major constituent
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Abstract
The invention provides a method for producing a high-strength copper nickel silica lead frame material. The method is characterized by comprising the first procedure of preparing raw materials, the second procedure of smelting, the third procedure of horizontal and continuous casting, the fourth procedure of continuous extruding, the fifth procedure of cold rolling and aging, and the sixth procedure of finishing, wherein cold rolling comprises two times of rolling, and aging is carried out between the two times of rolling. According to the method for producing the high-strength copper nickel silica lead frame material, the machining processes of a traditional production method are simplified, the machining temperature is reduced, and therefore the equipment investment and energy consumption can be reduced, the production efficiency and product yield are improved, and the targets, needing by production enterprise sustainable development, of energy saving, emission reducing and efficient producing are met completely.
Description
Technical field
The present invention relates to metal manufacture field, be specifically related to a kind of production method of high-strength copper nisiloy blaster fuse frame material.
Background technology
Blaster fuse frame material is as one of critical material of integrated circuit and semiconductor components and devices encapsulation; play a part fixed chip, protection inner member, transmission of signal outside distribute heat; along with electronic devices and components are to the future development of densification, miniaturization and high-power; require more and more higher to the electrical and thermal conductivity of blaster fuse frame material; thereby the Copper Alloys for Lead Frame of electrical and thermal conductivity excellence more and more comes into one's own, its consumption has accounted for the more than 75% of blaster fuse frame material at present.Although developed a variety of materials, at present the most frequently usedly in the world only have Cu-Fe-P(KFC) and the alloy such as Cu-Ni-Si.Compared with conventional copper-iron alloy KFC, corson alloy intensity is higher, can reach 550～600MPa, and hardness is larger, and HV hardness more than 140, also has good conductance simultaneously.
Traditional copper processing method is syllogic, i.e. melting ingot casting-hot-working-cold working, wherein hot-working has hot extrude, hot rolling, forge hot etc., these process energy consumptions are high, yield rate is low, production cost and equipment investment large, and contaminated environment.Therefore, the emphasis innovation direction of China Copper processing industry is that flow process is short, serialization, energy-saving and environmental protection, low input, low cost, and continuous extrusion production meets above requirement just, is the direction of copper processing industry emphasis innovation.In copper plate/strip is produced, above draw copper bar-continuously extruded-high-precision stretching/rolling, because its small investment, efficiency are high, serialization, energy-saving and environmental protection and the high advantage of yield rate enjoy attention.
Its production technology of copper nisiloy blaster fuse frame material of producing at present still adopts traditional syllogic processing, and typical process route is as follows: alloy induction stove melting → gas-fired furnace be heated to 850～870 ℃ → be hot-rolled down to 13mm → clot → quench cooled → Double Milling and side milling to 12.4mm → be cold-rolled to 4mm → bell furnace protective atmosphere annealing → be cold-rolled to 1mm → bell furnace protective atmosphere annealing → cold rolling 0.25mm → air cushion through type annealing → degreasing → stretch bending rectify → to cut packing.
The major defect of conventional production methods is, manufacturing process is many, energy consumption is high, contaminated environment, production cost and equipment investment large, and milling face operation causes a considerable amount of raw material to be removed, and reduced yield rate, also improved production cost.In addition, because operation is many, also there is aborning the inaccurate problem of controlling of production process, cause its performance can not meet user's requirement completely.
Summary of the invention
The object of this invention is to provide a kind of production method of high-strength copper nisiloy blaster fuse frame material, to address the above problem.
The present invention for achieving the above object, adopts following technical scheme:
The invention provides a kind of production method of high-strength copper nisiloy blaster fuse frame material, it is characterized in that, comprise following operation: operation one, preparation raw material: raw material comprises pure nickel, pure silicon, pure phosphorus and fine copper, wherein, in above-mentioned raw materials, the mass fraction of nickel is 1.8～2.0wt%, the mass fraction of silicon is 0.45～0.5wt%, and the mass fraction of phosphorus is 0.02～0.03wt%, and surplus is copper; Operation two, melting: by heating raw materials to 1100～1200 ℃, make its fusing, with the charcoal of drying or carbon black covering molten surface; Operation three, horizontal continuous-casting: 1150 ℃ of insulations, cast above-mentioned liquation continuously moulding copper nisiloy bar with the hauling speed of 10～50mm/s; Operation four, continuously extruded: copper nisiloy bar is sent in the continuous extruder with heating and heat-insulating device and oxide skin removal device, make the temperature of copper nisiloy bar remain on 300～400 ℃ by heating and heat-insulating device, remove the oxide skin on copper nisiloy bar surface by oxide skin removal device, then with the speed continuously extruding and molding of 1～3m/min, obtain copper nisiloy made-up belt; Operation five, cold rolling and timeliness: to above-mentioned silicon ribbon base carry out twice cold rolling, cold rolling reduction is 60～80%, between two cold rolling passes, copper nisiloy made-up belt is carried out to Ageing Treatment, the temperature of this Ageing Treatment is 400～550 ℃, the time is 1～3 hour; Operation six, finishing: the copper nisiloy made-up belt of processing through operation six is carried out to finish rolling, make its thickness reach finished product requirement, then carry out trimming, harvest coiled strip.
The production method of high-strength copper nisiloy blaster fuse frame material involved in the present invention, can also there is such feature: wherein, the heating-up temperature of melting is 1200 ℃, the hauling speed of continuous casting is 20mm/s, continuously extruded temperature is 400 ℃, continuously extruded speed is 2m/min, and the temperature of timeliness is 450 ℃, and aging time is 2 hours.
Effect and the effect of invention
According to the production method of high-strength copper nisiloy blaster fuse frame material provided by the present invention, adopt horizontal continuous-casting technological forming copper nisiloy bar, adopt the continuously extruded blank that approaches lead frame shape of directly producing, then carry out cold rolling and Ageing Treatment, after finishing, just can obtain the copper nisiloy blaster fuse frame material that performance and size meet the demands.This production method has been simplified the process of conventional production methods, the operations such as milling face, hot rolling cogging and breaking down are removed, reduce middle mill train, and continuously extruded temperature is well below hot-rolled temperature, therefore can reduce equipment investment and energy resource consumption, enhance productivity and finished product rate, meet the target of the required energy-saving and emission-reduction of following of manufacturing enterprise's sustainable development and High-efficient Production completely.
The specific embodiment
Operation one, configuration raw material: in raw material, nickel content is 1.9wt%, and silicone content is 0.45～0.5wt%, and phosphorus content is 0.02～0.03wt%, and surplus is copper.
Operation two, melting: by heating raw materials to 1200 ℃, raw material is fully melted, by the charcoal covering solution surface of drying.
Operation three, horizontal continuous-casting: liquation, 1150 ℃ of insulations, with the hauling speed horizontal continuous-casting of 20mm/s, is obtained to copper nisiloy bar, and its diameter is 23mm.
Operation four, continuously extruded: the copper nisiloy bar after solution treatment is sent in the continuous extruder with heating and heat-insulating device and oxide skin removal device by extruder bar material entrance, make the temperature of described copper nisiloy bar remain on 400 ℃ by heating and heat-insulating device, remove the oxide skin on described copper nisiloy bar surface by oxide skin removal device, then with the speed continuously extruding and molding of 2m/min, obtain copper nisiloy made-up belt.
Operation five, cold rolling and timeliness: continuous profiled copper nisiloy made-up belt is carried out to the cold rolling of two passages, and every time deflection is 70%, between two cold rolling passes, copper nisiloy made-up belt is carried out to Ageing Treatment, and aging temp is 450 ℃, and the time is 2 hours.
Operation six, finishing: the product after cold rolling and timeliness is carried out to finish rolling distortion, make its thickness reach finished product requirement, then carry out trimming, harvest coiled strip, packing warehouse-in.
The corson alloy performance of producing according to above-mentioned alloying component and processing technology is: microhardness 220HV, conductance 43%IACS, intensity 670MPa, percentage elongation 8.9%.
The effect of embodiment and effect
According to the production method of the high-strength copper nisiloy blaster fuse frame material of the present embodiment, owing to adopting horizontal continuous-casting method moulding copper nisiloy bar, adopt continuous extrusion production to go out to approach the blank of lead frame shape, after processing, cold rolling, timeliness and finishing just can obtain the blaster fuse frame material that performance and size meet the demands again, therefore the production process of this production method is simple, equipment investment is few, and production efficiency and finished product rate are high.Continuously extruded need be carried out 400 ℃ of left and right, and traditional hot rolling technology generally need to be by more than blank heating to 900 ℃, and therefore this production method can reduce energy resource consumption, is beneficial to energy-saving and emission-reduction and the High-efficient Production of manufacturing enterprise.
The production method of high-strength copper nisiloy blaster fuse frame material certainly, involved in the present invention is not merely defined in the content described in the present embodiment.Above content is only the basic explanation of the present invention under conceiving, and any conversion of doing according to technical scheme of the present invention, all should belong to protection scope of the present invention.
In addition, the smelting temperature the present invention relates to can also be the arbitrary value within the scope of 1100～1200 ℃.
The hauling speed of the continuous casting the present invention relates in addition, can also be the arbitrary value within the scope of 10～50mm/s.
In addition, the present invention relates to continuously extruded time copper nisiloy bar holding temperature can also be the arbitrary value within the scope of 300～400 ℃.
In addition, the continuously extruded speed the present invention relates to can also be the arbitrary value within the scope of 1～3m/min.
In addition, the aging temp the present invention relates to can also be the arbitrary value within the scope of 400～550 ℃, and aging time can also be the arbitrary value in 1～3 hour.
Select other technological parameter worked copper nisiloy blaster fuse frame material, although superior not as in above-described embodiment of the performance of the final corson alloy obtaining, but still can reach simplify copper nisiloy blaster fuse frame material production process, reduce energy resource consumption, enhance productivity and yield rate act on effect, produce satisfactory corson alloy.
Claims (2)
1. a production method for high-strength copper nisiloy blaster fuse frame material, adopts continuous casting to connect crowded work simplification production process, enhances productivity and finished product rate, it is characterized in that, comprises following operation:
Operation one, preparation raw material: in described raw material, the mass fraction of nickel is 1.8～2.0wt%, and the mass fraction of silicon is 0.45～0.5wt%, and the mass fraction of phosphorus is 0.02～0.03wt%, and surplus is copper;
Operation two, melting: by described heating raw materials to 1100～1200 ℃, make its fusing, with the charcoal of drying or carbon black covering molten surface;
Operation three, horizontal continuous-casting: 1150 ℃ of insulations, cast described liquation continuously moulding copper nisiloy bar with the hauling speed of 10～50mm/s;
Operation four, continuously extruded: described copper nisiloy bar is sent in the continuous extruder with heating and heat-insulating device and oxide skin removal device, make the temperature of described copper nisiloy bar remain on 300～400 ℃ by described heating and heat-insulating device, remove the oxide skin on described copper nisiloy bar surface by described oxide skin removal device, then with the speed continuously extruding and molding of 1～3m/min, obtain copper nisiloy made-up belt;
Operation five, cold rolling and timeliness: to described copper nisiloy made-up belt carry out twice cold rolling, described cold rolling reduction is 60～80%, between two described cold rolling passes, described copper nisiloy made-up belt is carried out to Ageing Treatment, the temperature of described Ageing Treatment is 400～550 ℃, and the time is 1～3 hour;
Operation six, finishing: the described copper nisiloy made-up belt of processing through operation six is carried out to finish rolling, make its thickness reach finished product requirement, then carry out trimming, harvest coiled strip.
2. the production method of high-strength copper nisiloy blaster fuse frame material according to claim 1, is characterized in that:
Wherein, the heating-up temperature of described melting is 1200 ℃, and the hauling speed of described continuous casting is 20mm/s, and described continuously extruded temperature is 400 ℃, and described continuously extruded speed is 2m/min, and the temperature of described timeliness is 450 ℃, and described aging time is 2 hours.
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| CN201410120368.1A CN103878551A (en) | 2014-03-27 | 2014-03-27 | Method for producing high-strength copper nickel silica lead frame material |
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| CN201410120368.1A CN103878551A (en) | 2014-03-27 | 2014-03-27 | Method for producing high-strength copper nickel silica lead frame material |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105154715A (en) * | 2015-09-01 | 2015-12-16 | 洛阳奥瑞特铜业有限公司 | High-performance copper alloy material and preparation method thereof |
| CN107159739A (en) * | 2017-07-03 | 2017-09-15 | 广东省材料与加工研究所 | A kind of preparation method of Cu Ni Si Mg alloy strip steel rolled stocks |
| CN112570991A (en) * | 2020-11-10 | 2021-03-30 | 湖南乾龙新材料有限公司 | Production method of high-strength high-conductivity aluminum alloy conductor rail section bar |
| CN113690705A (en) * | 2021-08-25 | 2021-11-23 | 苏州鸿康未徕智能科技有限公司 | Production process of high-precision USB TYPE-C shell |
| CN114525461A (en) * | 2022-01-19 | 2022-05-24 | 江西铜业技术研究院有限公司 | Method for preparing fine-grain KFC (KFC) strip and fine-grain KFC strip |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107159739A (en) * | 2017-07-03 | 2017-09-15 | 广东省材料与加工研究所 | A kind of preparation method of Cu Ni Si Mg alloy strip steel rolled stocks |
| CN112570991A (en) * | 2020-11-10 | 2021-03-30 | 湖南乾龙新材料有限公司 | Production method of high-strength high-conductivity aluminum alloy conductor rail section bar |
| CN113690705A (en) * | 2021-08-25 | 2021-11-23 | 苏州鸿康未徕智能科技有限公司 | Production process of high-precision USB TYPE-C shell |
| CN113690705B (en) * | 2021-08-25 | 2024-04-19 | 苏州鸿康未徕智能科技有限公司 | Production process of high-precision USB TYPE-C shell |
| CN114525461A (en) * | 2022-01-19 | 2022-05-24 | 江西铜业技术研究院有限公司 | Method for preparing fine-grain KFC (KFC) strip and fine-grain KFC strip |
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Application publication date: 20140625 |