CN102294528B - Process for carrying out entire high-frequency brazing by welding jig - Google Patents
Process for carrying out entire high-frequency brazing by welding jig Download PDFInfo
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- CN102294528B CN102294528B CN 201110230745 CN201110230745A CN102294528B CN 102294528 B CN102294528 B CN 102294528B CN 201110230745 CN201110230745 CN 201110230745 CN 201110230745 A CN201110230745 A CN 201110230745A CN 102294528 B CN102294528 B CN 102294528B
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Abstract
The invention relates to a process for carrying out entire high-frequency brazing by a welding jig, which comprises the preparation of a matrix and the preparation of diamond gear blocks. Uniformly stirred silver based brazing filler metal and welding adjuvants are uniformly coated on surfaces to be brazed of the diamond gear blocks, then a millstone matrix and the diamond gear blocks are positioned and fixed by the welding jig, and finally the millstone matrix and the diamond gear blocks are arranged in a vacuum brazing furnace to be brazed. The process for carrying out entire high-frequency brazing by the welding jig overcomes the technical problems of complex manufacturing process, low production efficiency, unstable quality and high production cost of the diamond millstone in the prior art, and on the premise of ensuring the welding quality to be stable, the brazing efficiency is greatly improved, and the production cost is effectively reduced.
Description
Technical field
The present invention relates to a kind of high frequency brazing technique, more particularly, the present invention relates to a kind of technique of utilizing weld jig to carry out whole high frequency brazing.
Background technology
Diamond disk has been widely used in the various aspects in grinding field.Diamond disk is the effective tool of grinding stone material, carbide alloy, glass, the contour crisp material of pottery.By diamond segment and matrix composition, prepared diamond segment and matrix respectively in manufacturing process by diamond disk, and then adopt the process of welding that diamond segment is fixed on matrix.In the prior art, the method generally adopted is diamond segment sintering in vacuum hot-pressing equipment; The connection technology of cutter head and matrix adopts high-frequency induction brazing.
Soldering is one of three large chief components of modern welding technology.Conventional soldering is to adopt the solder lower than parent fusion temperature, and operating temperature is taked lower than the mother metal solidus higher than a kind of solder technology of solder liquidus curve.During soldering, the solder thawing remains solid-state for the liquid state mother metal, liquid solder is wetting on the gap of mother metal or surface, capillary flow, fill, sprawl, interact with mother metal (dissolve, diffusion or produce intermetallic compound), cooled and solidified form firmly joint, thereby mother metal is linked together.In order more to give full play to the advantage of diamond tool, the hold abrasive particle that simultaneously the overcomes plating diamond tool defect such as easily come off, at first start soldering is applied to the manufacturing of diamond tool abroad in the eighties of last century late nineteen eighties.High temperature brazing can realize chemical metallurgy combination on diamond, brazing alloy material and metallic matrix interface, there is higher bond strength, adamantine effective rate of utilization is high, life-span is long, simultaneously firmly chemical metallurgy combination, make the work that brazed diamond tool can be stable under high-speed condition.
The factor that affects the brazed diamond tool quality mainly contains mode of heating, solder and brazing temperature.Mainly contain salt bath brazing, laser braze welding and high-frequency induction brazing at present application of mode of heating.
The high-frequency induction brazing heating-up temperature is high, and is non-contact heating, and the efficiency of heating surface is fast at a high speed, and easy control of temperature; Can local heat, easily realize automatically controlling; Operating environment is good, almost pollution-free.Required time of high-frequency induction heating is between LASER HEATING and resistance heated, generally effect in 30 seconds, this time has reduced adamantine fire damage degree better, also for interface generates continuous transition zone, provides the enough reaction time, and the soldering effect is comparatively desirable simultaneously.This kind of mode of heating application is the most general at present.
In the manufacturing of diamond disk, when producing multi-block type high-frequency welding mill, mostly adopt the welding method of single tooth piece at present, under this method production efficiency, and brazing quality is difficult to guarantee.In order to enhance productivity, we have developed integral solder technique, and operating efficiency can increase work efficiency 50% with respect to traditional soldering processes.But while adopting integral braze-welded technique, to having relatively high expectations of brazing jig.Adopt traditional weld jig, in integral braze-welded process, due to the impact that is subject to high temperature, fixed screw easily gets loose; Cause when integral solder, clamping force of each joint piece is difficult to be consistent, thereby easily cause saving piece (tooth piece), can not be close to and produce rosin joint.
Summary of the invention
In order to solve, adopt single tooth block brazing welding efficiency low, welding quality is unstable, the inconsistent defect of clamping force.The present inventor has carried out creationary innovation to weld jig of the prior art, provide a kind of joint piece simple in structure, convenient to install and can guarantee the weld jig of welding quality stable, and developed on this basis a kind of technique of utilizing weld jig to carry out whole high frequency brazing, this technique has production efficiency height and the reliable characteristics of welding quality stable.
In order to solve the problems of the technologies described above, the present invention has adopted following technical scheme:
A kind of technique of utilizing weld jig to carry out whole high frequency brazing, getting the silver-base solder and the welding auxiliary agent that have stirred evenly spreads upon on the surface to be brazed of diamond tooth block, utilize weld jig to position and fix grinding disc substrate and diamond tooth block, then put it in vacuum brazing furnace and carry out soldering, it is characterized in that described weld jig comprises top board and lower platen, top board and lower platen have the center positioning hole of coaxial setting, lower platen is provided with tooth piece locating hole, the lower surface of lower platen is provided with tooth piece mounting groove, tooth piece positioning screw and tooth piece holddown spring are installed between top board and lower platen, the number of described tooth piece positioning screw equates with the number of the diamond tooth block of the required installation of grinding disc substrate.Preferably, described lower platen also is provided with the auxiliary positioning hole, and described auxiliary positioning hole evenly arranges along donut, and the number in described auxiliary positioning hole is 3.
Preferably, described top board and lower platen are disc, and the equal diameters of top board and lower platen.
Preferably, described tooth piece mounting groove evenly arranges along donut, and the lower surface of lower platen is provided with two toothrow piece mounting grooves.
Preferably, the profile of described tooth piece mounting groove is identical with the shape of cross section of tooth piece.
Preferably, described silver-base solder is based on repeatedly to test and put into practice and draws, is specially adapted to integral braze-welded technique of the present invention.Solder plasticity of the present invention is good, shock-resistant; The high temperature creep-resisting ability is strong, and welding performance is reliable and stable, can guarantee that each tooth block welding adhesive property keeps basically identical when integral braze-welded.The proportioning of silver-base solder of the present invention is Ag:35wt%, Cu:25wt%, Zn:18wt%, Ni:12wt%, Cd:2wt%, Mn:8wt%; The proportioning of welding auxiliary agent is: ZnCl
2: 35wt%, NH
4cl:35wt%, BaCl
2: 10wt%, CaF
2: 10wt%, borax: 10wt%.Silver-base solder is 3 with the interpolation ratio of welding auxiliary agent: 1-5: 1.Using the purpose of welding auxiliary agent in the present invention is for removing the oxide on matrix, cutter head and solder surface, and sprawling with solder for liquid solder on matrix, cutter head created necessary condition to the cutter head infiltration; And can improve wetting to faying face of solder, promote solder to flow, fill gap, form the brazed seam of smooth densification.
Preferably, described silver-base solder adopts the atomized powder method to prepare, and the average grain diameter of silver-base solder powder is 10-200um.
Preferably, the technological parameter of described soldering is: brazing temperature is 690-715 ℃, and the holding time is 13-16s, and vacuum is 0.01Pa.
The operation principle of weld jig of the present invention is as follows: weld jig of the present invention mainly consists of elements such as top board, lower platen, tooth piece positioning screw and tooth piece holddown springs.In the time of welding, workpiece (being the diamond disc matrix) is placed on the workbench of rotation, place silver solder and scaling powder on matrix surface to be brazed at workpiece, the tooth piece is set thereon again, then the lower platen of weld jig is placed on the tooth piece, and making the tooth piece overlap with tooth piece locating slot, the center positioning hole that top board and lower platen are coaxial and the center-aligned of diamond disc matrix, utilize the centralized positioning screw rod to make diamond disc be fixed on the workbench of rotation; Then the tooth piece positioning screw on fixture is arranged on each tooth piece, and the spring hitch reversed on holddown spring makes diamond disc matrix and tooth piece be fastenedly connected, then put on the ratio-frequency welding frame with rotating disk and welded.
Weld jig of the present invention is simple in structure, easy to use, and in high-temperature soldering, the spring expanded by heating, can make between the solder side of tooth piece and matrix and remain and be fastenedly connected, and can not produce loosening, as not there will be rosin joint phenomenon.
Adopt weld jig of the present invention to carry out the technique of whole high frequency brazing, diamond disk complex manufacturing technology in the prior art, production efficiency is low, quality is unstable and production cost is high technical problem have been overcome, under the prerequisite that guarantees welding quality stable, also significantly improve the operating efficiency of soldering, effectively reduced production cost.The diamond disk weld strength that adopts technique of the present invention to make is high, stable performance, long service life.
The accompanying drawing explanation
Fig. 1: the block diagram of the weld jig of one embodiment of the invention.
Fig. 2: the parts assembling schematic diagram of the weld jig of one embodiment of the invention.
The specific embodiment
In connection with accompanying drawing and specific embodiment, the present invention will be further explained in following the present invention.The applicant need to declare at this, and embodiment and accompanying drawing are only in order to further illustrate technical scheme of the present invention, it must not be interpreted as to the restriction to the invention protection domain.
Embodiment 1
The block diagram of the weld jig that is one embodiment of the invention referring to Fig. 1-2 and parts assembling schematic diagram.By Fig. 1-2, can be found out, the weld jig of the present embodiment, comprise disc top board (1) and disc lower platen (2), top board (1) and lower platen (2) all have the center positioning hole (3) of coaxial setting, lower platen (2) is provided with tooth piece locating hole (21), the lower surface of lower platen (2) arranges tooth piece mounting groove (22), it is characterized in that mounting teeth piece positioning screw (5) and tooth piece holddown spring (6) between top board (1) and lower platen (2); Described lower platen also evenly is provided with 3 auxiliary positioning holes (4) along donut; The equal diameters of top board (1) and lower platen (2) wherein; Described tooth piece mounting groove (22) evenly arranges along donut, and the lower surface of lower platen (2) is provided with two toothrow piece mounting grooves (22); The number of described positioning screw (5) equates with the tooth piece number of diamond disk; And the profile of described tooth piece mounting groove (22) is identical with the shape of cross section of tooth piece.
The technique of the present embodiment, getting the silver-base solder and the welding auxiliary agent that have stirred evenly spreads upon on the surface to be brazed of diamond tooth block, then utilize the disclosed weld jig of embodiment 1 to position and fix grinding disc substrate and diamond tooth block, then put it in vacuum brazing furnace and carry out soldering; Wherein the proportioning of silver-base solder is Ag:35wt%, Cu:25wt%, Zn:18wt%, Ni:12wt%, Cd:2wt%, Mn:8wt%; The proportioning of welding auxiliary agent is: ZnCl
2: 35wt%, NH
4cl:35wt%, BaCl
2: 10wt%, CaF
2: 10wt%, borax: 10wt%; Silver-base solder is 3 with the interpolation ratio of welding auxiliary agent: 1-5: 1; The average grain diameter of silver-base solder powder is 10-200um; The technological parameter of soldering is: brazing temperature is 690-715 ℃, and the holding time is 13-16s, and vacuum is 0.01Pa.
The above; it is only preferred embodiment of the present invention; can not be interpreted as limiting scope of the present invention with this, the distortion be equal to of making in all scopes claimed at claims of the present invention and the embodiment of change are all in the scope of protection of present invention.
Claims (8)
1. a technique of utilizing weld jig to carry out whole high frequency brazing, getting the silver-base solder and the welding auxiliary agent that have stirred evenly spreads upon on the surface to be brazed of diamond tooth block, utilize weld jig to position and fix grinding disc substrate and diamond tooth block, then put it in vacuum brazing furnace and carry out soldering, it is characterized in that described weld jig comprises top board and lower platen, top board and lower platen have the center positioning hole of coaxial setting, lower platen is provided with tooth piece locating hole, the lower surface of lower platen is provided with tooth piece mounting groove, tooth piece positioning screw and tooth piece holddown spring are installed between top board and lower platen, the number of described tooth piece positioning screw equates with the number of the diamond tooth block of the required installation of grinding disc substrate, wherein said silver-base solder proportioning is Ag:35wt%, Cu:25wt%, Zn:18wt%, Ni:12wt%, Cd:2wt%, Mn:8wt%, the proportioning of welding auxiliary agent is: ZnCl
2: 35wt%, NH
4cl:35wt%, BaCl
2: 10wt%, CaF
2: 10wt%, borax: 10wt%, silver-base solder is 3 with the interpolation ratio of welding auxiliary agent: 1-5: 1, and brazing temperature is 690-715 ℃, the holding time is 13-16s, and vacuum is 0.01Pa.
2. technique according to claim 1, is characterized in that described lower platen also is provided with the auxiliary positioning hole, and described auxiliary positioning hole evenly arranges along donut.
3. technique according to claim 2, the number that it is characterized in that described auxiliary positioning hole is 3.
4. technique according to claim 1, is characterized in that described tooth piece mounting groove evenly arranges along concentric circles.
5. technique according to claim 4, is characterized in that the lower surface of described lower platen is provided with two toothrow piece mounting grooves.
6. technique according to claim 1, is characterized in that the profile of described tooth piece mounting groove is identical with the shape of cross section of tooth piece.
7. technique according to claim 1, is characterized in that described top board and lower platen are disc, and the equal diameters of top board and lower platen.
8. technique according to claim 1, is characterized in that described silver-base solder adopts the atomized powder method to prepare, and the average grain diameter of silver-base solder powder is 10-200um.
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| CN 201110230745 CN102294528B (en) | 2011-08-12 | 2011-08-12 | Process for carrying out entire high-frequency brazing by welding jig |
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| CN 201110230745 CN102294528B (en) | 2011-08-12 | 2011-08-12 | Process for carrying out entire high-frequency brazing by welding jig |
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| CN102294528A CN102294528A (en) | 2011-12-28 |
| CN102294528B true CN102294528B (en) | 2013-05-22 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102699593B (en) * | 2012-05-16 | 2015-04-22 | 安徽华东光电技术研究所 | Welding fixture for diffusion welding of dissimilar metal and welding method thereof |
| CN103551701B (en) * | 2013-11-15 | 2015-05-27 | 哈尔滨工业大学 | Fixture for brazing zirconia ceramic/stainless steel fixing tong head of medical anastomat and brazing method |
| CN104439592B (en) * | 2014-11-05 | 2016-04-20 | 株洲硬质合金集团有限公司 | The technique of soldering stainless steel cylindrical part on hard alloy strip thin-wall part |
| CN106925858A (en) * | 2017-03-06 | 2017-07-07 | 无锡格林沃科技有限公司 | A kind of high-frequency gas protect soldering oven and its method of work |
| CN109304559A (en) * | 2017-07-29 | 2019-02-05 | 安徽华众焊业有限公司 | A kind of silver-base solder containing cadmium |
| CN108253652A (en) * | 2018-01-10 | 2018-07-06 | 中国科学院上海技术物理研究所 | A kind of Split type welded hot end heat exchanger of coaxial type pulse pipe refrigerator |
| CN109734469A (en) * | 2018-12-31 | 2019-05-10 | 深圳硅基仿生科技有限公司 | The method for welding of ceramics and metal |
| CN109604758B (en) * | 2019-01-14 | 2020-11-10 | 中国电子科技集团公司第三十八研究所 | Brazing process of copper-aluminum composite liquid cooling assembly |
| CN109570685B (en) * | 2019-01-31 | 2024-05-03 | 台州市圣西亚金刚石设备有限公司 | Millstone welding device |
| CN111001891A (en) * | 2019-10-30 | 2020-04-14 | 合肥科聚低温技术有限公司 | Heat exchanger and room temperature copper head welding tool and welding process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS57199561A (en) * | 1981-05-29 | 1982-12-07 | Yutaka Awata | Production of abrasion resistant jig tool |
| CN1018342B (en) * | 1990-06-14 | 1992-09-23 | 国家建筑材料工业局人工晶体研究所 | Soldering flux and soldering paste diamond tool |
| CN2552627Y (en) * | 2002-07-13 | 2003-05-28 | 华中科技大学 | Welding fixture for laser welding diamond engineering drilling bit |
| JP4477325B2 (en) * | 2003-08-15 | 2010-06-09 | 株式会社ワイ・ワイ・エル | Processing method and apparatus using processing beam |
| CN201415315Y (en) * | 2009-04-17 | 2010-03-03 | 上海钻圣和新材料科技有限公司 | Laser welding clamp for diamond thin-walled drill head |
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