CN104867620A - Manufacturing method for AgMeO electrical contact and integrated component thereof - Google Patents
Manufacturing method for AgMeO electrical contact and integrated component thereof Download PDFInfo
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- CN104867620A CN104867620A CN201510170475.XA CN201510170475A CN104867620A CN 104867620 A CN104867620 A CN 104867620A CN 201510170475 A CN201510170475 A CN 201510170475A CN 104867620 A CN104867620 A CN 104867620A
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- electrical contact
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention relates to a manufacturing method for an AgMeO electrical contact and an integrated component thereof. Firstly coated silver-oxide composite powder is prepared and put into the powder cylinder of a 3D printer; and then a three-dimensional model of the AgMeO electrical contact and the integrated component thereof is established via a computer so that 3D printing formation of the AgMeO electrical contact and the integrated component thereof is completed. Direct and rapid formation of the AgMeO electrical contact and the integrated component thereof from raw material to the finished product is realized by 3D printing so that the raw material and production cost can be saved, zero inventory and zero time delivery can be realized, and thus the manufacturing method is a new method for preparing the AgMeO electrical contact and the integrated component thereof.
Description
Technical field
The present invention relates to the manufacture method of a kind of electrical contact and integral component thereof, specifically, what relate to is the 3D printing shaping method of a kind of AgMeO electrical contact and integral component thereof.
Background technology
Electrical contact and integral component thereof are the industrial base components such as motor, electrical equipment, instrument and meter, electronics, it is also core parts simultaneously, the feature of electrical contact and integral component thereof is: volume is little, complex-shaped, and require wide in variety, specification is complete, performance is high, its quality directly affects the performance of low-voltage electrical apparatus.Manufacturing high-quality electrical contact and integral component thereof can energy savings and raw material greatly.So the kind of electrical contact and integral component thereof, quality, technology level have become one of mark of the industrial products such as motor, electrical equipment performance level.But prepare the Processes and apparatus of high-quality, various in style, complex-shaped various electrical contact and the many cover complexity of integral component needs thereof, floor space is large, causes high production cost.Simultaneously integral component affects electric property and the mechanical property of integral component due to the series of problems of electrical contact and tactile bridge combination interface, and then affects the reliability of low-voltage electrical apparatus.For reducing costs, improving integral component combination interface quality, constantly having new electrical contact and integral component preparation technology thereof to be developed.
Research both at home and abroad in electrical contact and integral component preparation technology thereof is specific as follows:
2) Chinese invention patent: cold pressure welding compound rivet contacts and manufacture method, application number: 200910053737.9, publication number: CN101587788A.
2) Chinese invention patent: the manufacture method of triple-layer composite cold-rolling welded rivet contact, application number: 200710036330.6, publication number: CN101030491A.
3) Chinese invention patent: igniter and the manufacture method thereof with the firing tip of induction welding and laser welding, application number: 200880114019.1, publication number: CN101842948A.
The technology of preparing of various electrical contact and integral component thereof has saved noble metal raw material all to a certain extent above, simplify preparation technology's flow process of electrical contact, reduce cost of material and production cost, also improve the combination interface quality of electrical contact and tactile bridge in integral component simultaneously, but it still can not reach the production directly from raw material to finished product, still needs multi-step process just can complete.
Summary of the invention
The present invention is directed to the deficiency that above-mentioned prior art exists, preparation method---the 3D printing shaping method of a kind of brand-new AgMeO electrical contact and integral component thereof is provided, Selective Laser Sintering in utilizing 3D to print realizes AgMeO electrical contact and the quick straight forming of integral component from raw material to finished product thereof, reduce production cost, and improve the combination interface quality touching bridge and AgMeO electrical contact in integral component further, improve its electric property and mechanical property; Realize the zero inventory of AgMeO electrical contact and integral component thereof, zero-time payment, and then reduce inventory cost.
For realizing above-mentioned object, the 3D printing shaping method of AgMeO electrical contact of the present invention and integral component thereof, comprises the steps:
The first step, requires to carry out powder process according to the composition proportion of AgMeO electrical contact, batching, mixed powder makes silver-oxide composite.
Silver-oxide composite is that overlay film silver-oxide composite made by binding agent with high molecular polymer by second step.Overlay film silver-oxide composite is encased in 3D printer powder cylinder.
3rd step, sets up the threedimensional model of AgMeO electrical contact and integral component thereof, utilizes Selective Laser Sintering to carry out the 3D printing shaping of AgMeO electrical contact and integral component thereof, obtains moulded blank.
As an optimal way, in the described first step: silver powder is the mixing of nano powder and powder and micron, Ag and MeO quality proportioning is 94:6 ~ 85:15, is preferably 92:8 ~ 88:12.In this step, silver powder adopts the mixing of nano powder and powder and micron, because the fusing point of nano-silver powder is low, micro-silver powder fusing point is high, the mixed powder of both employings, the nano-silver powder first melted is filled in unfused micro-silver powder, can solve 3D and print AgMeO electrical contact and integral component voidage is high, interface quality is poor problem thereof.
As an optimal way, in described second step: the particle diameter of overlay film silver-oxide composite is 1 ~ 50 μm.Preferably, polymeric binder diluent is diluted, after stirring, silver-oxide composite is put into wherein, ceaselessly stirs, allow polymer fully be wrapped up by silver-oxide composite, drying makes adhesive cures again, obtains overlay film silver-oxide composite.Overlay film silver-oxide composite concrete structure coalesces together again after silver-oxide composite particle Surface coating one layer of polymeric binding agent.
As an optimal way, in described 3rd step: selective laser sintering and moulding is a kind of heat treatment process, there is a series of physical and chemical changes in the process, mainly contain the change of the generation of heat and conduction, the differentiation of microstructure, the impact of fluid and mechanical tissue, powder to be powdered agglomerate by granular aggregation, thus AgMeO electrical contact needed for being formed and integral component thereof.In this series of problem, the impact of heat problem is topmost.In laser sintering metallic powder, heat is produced by the energy of laser and powder preheating completely, and various technological parameter decides the energy density of laser jointly, most important technological parameter comprises laser power, sweep speed, sweep span and lift height etc.The present invention first affects above each technological parameter and the matching relationship thereof of quantity of sintered parts by the numerical simulation analysis in metal powder sintered temperature field, and finally determine laser power 13 ~ 15W by experiment further, sweep speed 1800 ~ 2000mm/s, sweep span 0.1 ~ 0.16mm, lift height 0.1 ~ 0.14mm.
As an optimal way, the present invention, after the 3rd step, performs the 4th step: carry out reprocessing to obtain closely knit AgMeO electrical contact and integral component thereof to moulded blank.
Preferably; in described 4th step: powder unnecessary in moulded blank is removed; after further cleaning polishing; also need to be for further processing to moulded blank; now moulded blank experienced three stages: degradation polymer, double sintering and metallic cementation, this three phases can carry out in same heating furnace, and protective atmosphere is the hydrogen of 30%; the nitrogen of 70%, percentage composition here refers to volumn concentration.
The present invention adopts 3D printing technique to manufacture AgMeO electrical contact and integral component thereof, adopts powder surface to be coated with organic polymer on the one hand and solves the printing difficult problem that Ag material causes because thermal conductivity is high and laser reflectivity is high; The method on the other hand adopting Ag nano powder to mix with powder and micron solves 3D and prints AgMeO electrical contact and integral component voidage is high, interface quality is poor problem thereof.
Compared with prior art, the beneficial effect that the present invention has: the particular advantages utilizing 3D printing technique, can the complex-shaped AgMeO electrical contact of manufacturing structure and integral component thereof and do not increase cost; Multiple AgMeO electrical contact and assembly thereof can be manufactured and do not increase production line; Because 3D printing increases material manufacture, the waste of raw material can not be caused; Due to without the need to production line and 3D printer volume is little, floor space is little, can reduce production cost; Zero inventory, zero-time payment can be realized.Simultaneously can manufacture complete integral component and improve the electric conductivity of integrated element.
Accompanying drawing explanation
Fig. 1 is principle of the invention schematic diagram.
Embodiment
Elaborate to embodiments of the invention below, following examples give detailed execution mode and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, the device that the present invention adopts and principle signal thereof, in figure: 1. laser, 2. laser beam scanner, 3. laser beam, 4.ZnSe window, 5.AgMeO electrical contact and integral component thereof, 6. moulding cylinder, 7. working piston, 8. powder cylinder, 9. powder feeding piston, 10. powder-laying roller.Its operation principle: whole process unit forms primarily of moulding cylinder 6 and powder cylinder 8, when work starts, powder feeding piston 9 rises, by powder-laying roller 10 by uniform spreading last layer on the tactile bridge of overlay film silver-oxide composite on working piston 7, computer controls the two-dimensional scan track of laser beam 3 according to the hierarchical model of prototype, and sintering solid dusty material is to form an aspect of AgMeO electrical contact and integral component 5AgMeO electrical contact thereof selectively.After powder completes one deck, working piston 7 declines a thickness, and powder-laying roller 10 spreads new powder, controls laser beam 3 and scan and sinter new layer.So move in circles, be layering, until AgMeO electrical contact and integral component 5 shaping.Finally, to unsintered Powder Recovery in powder cylinder, and moulded blank is taken out.
Embodiment 1
To print Ag94 (CdO) 6 electrical contact and integral component thereof
The first step, prepares silver, cadmium oxide powder respectively, and is that 94:6 carries out mixed powder and makes silver-cadmium oxide composite powder by silver and cadmium oxide quality proportioning.
Second step, be that the overlay film silver-cadmium oxide composite powder that particle diameter is 1 μm made by binding agent (polymer adopted here mainly thermoplastic, as Merlon (PC), nylon (PA) etc.) with high molecular polymer by silver-cadmium oxide composite powder.Overlay film silver-cadmium oxide composite powder is encased in 3D printer powder cylinder.
3rd step, set up the threedimensional model of Ag94 (CdO) 6 electrical contact and integral component thereof, Selective Laser Sintering is utilized to carry out the 3D printing shaping of Ag94 (CdO) 6 electrical contact and integral component thereof, laser power is 13W, sweep speed is 1800mm/s, sweep span is 0.1mm, and lift height is 0.1mm, obtains Ag94 (CdO) 6 electrical contact and integral component thereof.
Embodiment 2
To print Ag90 (ZnO) 10 electrical contact and integral component thereof
The first step, prepares silver, Zinc oxide powder respectively, and is that 90:10 carries out mixed powder and makes silver-ZnO composite powder by silver and zinc oxide quality proportioning.
Silver-ZnO composite powder is the overlay film silver-ZnO composite powder that binding agent makes that particle diameter is 10 μm with high molecular polymer by second step.Overlay film silver-ZnO composite powder is encased in 3D printer powder cylinder.
3rd step, set up the threedimensional model of Ag90 (ZnO) 10 electrical contact-and integral component thereof, Selective Laser Sintering is utilized to carry out the 3D printing shaping of Ag90 (ZnO) 10 electrical contact and integral component thereof, laser power is 14W, sweep speed is 1900mm/s, sweep span is 0.13mm, and lift height is 0.12mm.
4th step, carries out clearing up polishing and the reprocessing such as secondary heat treatment to obtain Ag90 (ZnO) 10 electrical contact and the integral component thereof of high strength, high accuracy and contact-touch bridge combination interface quality well (ratio of brazing area reaches more than 99%) to moulded blank.
Embodiment 3
To print Ag85 (SnO
2) 15 electrical contacts and integral component thereof be example
The first step, prepares silver, tin oxide powder respectively, and is that 85:15 carries out mixed powder and makes silver-tin composite powder by silver and tin oxide quality proportioning.
Silver-tin composite powder is the overlay film silver-tin composite powder that binding agent makes that particle diameter is 50 μm with high molecular polymer by second step.Overlay film silver-tin composite powder is encased in 3D printer powder cylinder.
3rd step, sets up Ag85 (SnO
2) threedimensional model of 15 electrical contacts and integral component thereof, utilize Selective Laser Sintering to carry out Ag85 (SnO
2) the 3D printing shaping of 15 electrical contacts and integral component thereof, laser power is 15W, and sweep speed is 2000mm/s, and sweep span is 0.16mm, and lift height is 0.14mm.
4th step, carries out clearing up polishing and the reprocessing such as secondary heat treatment to obtain the Ag85 (SnO of high strength, high accuracy and contact-touch bridge combination interface quality well (ratio of brazing area reaches more than 99%) to moulded blank
2) 15 electrical contacts and integral component thereof.
Be more than the preferred embodiments of the present invention, should be understood that, the present invention also has other form of implementation, and as Ag and MeO quality proportioning in the conversion first step, being such as 92:8,88:12 etc., is also to realize.As long as the technical scheme content provided in the present invention all can realize object of the present invention.
Although content of the present invention has done detailed introduction by above-described embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple amendment of the present invention and substitute will be all apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (10)
1. a manufacture method for AgMeO electrical contact and integral component thereof, is characterized in that, comprises the following steps:
The first step, requires to carry out powder process according to the composition proportion of AgMeO electrical contact, batching, mixed powder makes silver-oxide composite;
Second step, is that overlay film silver-oxide composite made by binding agent with high molecular polymer by silver-oxide composite, is encased in by overlay film silver-oxide composite in 3D printer powder cylinder;
3rd step, sets up the threedimensional model of AgMeO electrical contact and integral component thereof, utilizes Selective Laser Sintering to carry out the 3D printing shaping of AgMeO electrical contact and integral component thereof, obtains moulded blank.
2. the manufacture method of AgMeO electrical contact according to claim 1 and integral component thereof, is characterized in that: in the described first step: Ag and MeO quality proportioning is generally 94:6 ~ 85:15.
3. the manufacture method of AgMeO electrical contact according to claim 2 and integral component thereof, is characterized in that: in the described first step: Ag and MeO quality proportioning is 92:8 ~ 88:12.
4. the manufacture method of AgMeO electrical contact according to claim 1 and integral component thereof, is characterized in that: in the described first step: silver powder is the mixing of nano powder and powder and micron.
5. the manufacture method of AgMeO electrical contact according to claim 1 and integral component thereof, is characterized in that: in described second step: the particle diameter of overlay film silver-oxide composite is 1 ~ 50 μm.
6. the manufacture method of AgMeO electrical contact according to claim 5 and integral component thereof, it is characterized in that: in described second step: polymeric binder diluent is diluted, after stirring, silver-oxide composite is put into wherein, ceaselessly stir, polymer is allowed fully to be wrapped up by silver-oxide composite, drying makes adhesive cures again, obtain overlay film silver-oxide composite, this overlay film silver-oxide composite concrete structure coalesces together again after silver-oxide composite particle Surface coating one layer of polymeric binding agent.
7. the manufacture method of AgMeO electrical contact according to claim 1 and integral component thereof, it is characterized in that: in described 3rd step: the above each technological parameter and the matching relationship thereof that are affected quantity of sintered parts by the numerical simulation analysis in metal powder sintered temperature field, the parameter of Selective Laser Sintering: laser power 13 ~ 15W, sweep speed 1800 ~ 2000mm/s, sweep span 0.1 ~ 0.16mm, lift height 0.1 ~ 0.14mm.
8. the AgMeO electrical contact according to any one of claim 1-7 and the manufacture method of integral component thereof, it is characterized in that: after the 3rd step, perform the 4th step: reprocessing is carried out to obtain closely knit AgMeO electrical contact and integral component thereof to moulded blank.
9. the manufacture method of AgMeO electrical contact according to claim 8 and integral component thereof, it is characterized in that: described reprocessing, refer to: powder unnecessary in moulded blank is removed, after further cleaning polishing, moulded blank is for further processing, now moulded blank experienced three stages: degradation polymer, double sintering and metallic cementation.
10. the manufacture method of AgMeO electrical contact according to claim 9 and integral component thereof; it is characterized in that: described degradation polymer, double sintering and metallic cementation three phases carry out in same heating furnace; protective atmosphere is the hydrogen of 30%, the nitrogen of 70%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510170475.XA CN104867620B (en) | 2015-04-10 | 2015-04-10 | A kind of manufacture method of AgMeO electrical contacts and its integral component |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510170475.XA CN104867620B (en) | 2015-04-10 | 2015-04-10 | A kind of manufacture method of AgMeO electrical contacts and its integral component |
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| CN104867620A true CN104867620A (en) | 2015-08-26 |
| CN104867620B CN104867620B (en) | 2017-07-14 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105642889A (en) * | 2015-09-02 | 2016-06-08 | 华中科技大学 | Manufacturing method for Ag-based electrical contact |
| CN106098420A (en) * | 2016-07-25 | 2016-11-09 | 桂林电子科技大学 | A kind of electrical contact overlay coating adds material and electrical contact manufacture method |
Citations (2)
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| GB2022145A (en) * | 1978-06-01 | 1979-12-12 | Siemens Ag | Sintering silver alloys |
| US20150034604A1 (en) * | 2012-10-08 | 2015-02-05 | Siemens Energy, Inc. | Laser additive manufacture of three-dimensional components containing multiple materials formed as integrated systems |
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2015
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2022145A (en) * | 1978-06-01 | 1979-12-12 | Siemens Ag | Sintering silver alloys |
| US20150034604A1 (en) * | 2012-10-08 | 2015-02-05 | Siemens Energy, Inc. | Laser additive manufacture of three-dimensional components containing multiple materials formed as integrated systems |
Non-Patent Citations (1)
| Title |
|---|
| 戴冬华: "Cu基复合材料选区激光熔化数值模拟及实验研究", 《中国优秀硕士学位论文全文数据库》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105642889A (en) * | 2015-09-02 | 2016-06-08 | 华中科技大学 | Manufacturing method for Ag-based electrical contact |
| CN106098420A (en) * | 2016-07-25 | 2016-11-09 | 桂林电子科技大学 | A kind of electrical contact overlay coating adds material and electrical contact manufacture method |
| CN106098420B (en) * | 2016-07-25 | 2018-05-25 | 桂林电子科技大学 | A kind of electrical contact overlay coating added material and electrical contact manufacturing method |
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| CN104867620B (en) | 2017-07-14 |
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