CN104073860A - Process for manufacturing electroplated diamond product - Google Patents
Process for manufacturing electroplated diamond product Download PDFInfo
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- CN104073860A CN104073860A CN201410315089.0A CN201410315089A CN104073860A CN 104073860 A CN104073860 A CN 104073860A CN 201410315089 A CN201410315089 A CN 201410315089A CN 104073860 A CN104073860 A CN 104073860A
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Abstract
The invention discloses a process for manufacturing an electroplated diamond product. The process comprises the following steps: plating tin: plating a layer of low-melting point metallic tin on the inner hole of a mould; heating during demoulding; melting the tin so as to separate the mould and a plating layer; loading sand, wherein the primary mission at the stage is to uniformly and more firmly array diamond particles on a single layer by taking a hole wall as a reference, and optimal effect is achieved by that the sand loading thickness accounts for 12%-15% of the average particle diameter of diamonds; unloading the sand, wherein redundant sand inside the hole of the mould needs to be removed after the sand is completed loaded; primarily thickening; further thickening, wherein the plating layer is ought to be further thickened for about 0.8-1 mm to ensure the connection quality of the plating layer and a cutter bar; and after the thickness of the plating layer meets the requirement, turning off a direct-current power supply, disassembling the mould, and cleaning. The process disclosed by the invention has the advantages of high abrasive particle strength, high rigidity, high abrasive particle durability, high heat conductivity, low grinding temperature, low expansion coefficient and long service life.
Description
Technical field
The present invention relates to a kind of manufacture craft of electroplated diamond goods, belong to electroplated diamond product process field.
Background technology
Superhard material refers to taking diamond as representative to have the very general name of the material of high rigidity.Diamond is the highest material of the current known hardness of nature, is applied widely.Cubic boron nitride is that the more hardness of another kind of application is only second to adamantine material, the strict restriction of category neither one of superhard material, people get used to that diamond and hardness are approached to adamantine material and call superhard material, because the hardness of superhard material is very high, thereby there is special using value at aspects such as making cutting, abrasive machining tool and high-abrasive material.Tool made of superhard material is the machining tool of a kind of advanced person in human being's production instrument, affect the mankind's progress, the special development for modern manufacturing industry, tool made of superhard material creates very high production efficiency with its grinding performance free from worldly cares, as machining tool, generally there is certain shape need, and must there is sufficiently high intensity, the diamond of synthetic and cubic boron nitride are mostly tiny particle, be difficult to direct use, must be by means of being referred to as the material of bonding agent or being fixed in effective working position of instrument with special methods, be prepared into and there is some strength and shape by Material cladding technology, can be for instrument manual or machinery.
Along with scientific and technical development, type material constantly occurs, mechanical workout scope constantly expands, processing quality is required also to improve constantly, mechanical workout is to high quality, high precision, high-level efficiency, low cost, automation direction development, the range of application of tool made of superhard material is more and more wider, and consumption constantly increases.At present diamond tool is widely used in the cutting and ground finish of many materials such as Wimet, sintering metal, cast iron, pottery, electronics and crystalline material, glass, jewel, stone material, ferrite, concrete, refractory materials, fibre reinforced plastics, and be aspect Application Areas or consumption all also in constantly increasing.
There is following problem in the manufacture craft of existing electroplated diamond goods:
(1) bonding agent and diamond interface do not form chemical bonding completely, make it in processing wear process, can not keep the stronger hold to abrasive material;
(2) adamantine go out sword rate low, working (machining) efficiency is low, most of diamond abrasive instrument has in fact only been brought into play its very low task performance and has been less than 30%, is difficult to be recycled after exceeding 70% expensive diamond drop-off;
(3) sintering temperature is high more than 800 DEG C, and due to diamond poor heat stability, sintering time is long causes thermal damage to diamond, has reduced the intensity of diamond itself.
Summary of the invention
Goal of the invention: for for problems of the prior art, the invention provides a kind of manufacture craft of electroplated diamond goods.
Technical scheme: for achieving the above object, the invention provides a kind of manufacture craft of electroplated diamond goods, comprise the steps:
1, zinc-plated.At mold endoporus plating one deck low melting point metal tin, when the demoulding, heat, allow tin melt, just can make mold separate with coating.Meeting under smooth demoulding requirement prerequisite, this coating is as far as possible thin, with the size and dimension precision that ensures that reamer is final.Acid bright tinning solution cathode efficiency is high, and sedimentation velocity is fast, and leveling performance is good, therefore adopt it.
2, upper sand.The main task in this stage be make diamond particles evenly, individual layer, more firmly arrange taking hole wall as benchmark.Owing to being the composite plating that carries out diamond particles at endoporus, so adopt sand buring method, when upper sand, tin coating thickness is wanted fine control.Coating is too thick, consolidated diamond particle is too many, easily there is conglomeration, dross phenomenon, not only cause waste, but also follow-up electrolytic coating surface finish is declined, the size of accurately determining the bonding position of knife bar while giving coating and knife bar bonding is brought difficulty, upper sand thickness is 12%～15% best results of diamond median size, can ensure like this to unload after sand with scrub-brush slightly and scrub back and forth from hole, remove floating sand after hole wall be still evenly distributed with one deck sand grains, scoop up with have gentle hands, sand grains can not come off.
3, unload sand, after upper sand completes, sand unnecessary in mold hole be removed.
4, tentatively thickening, in reamer when work,, this layer of metal is the working lining of cutter, its physical and mechanical properties and the use properties of cutter is had to conclusive impact with the fusion degree of diamond particles.Compare with nickel coating, nickel cobalt (alloy) has good hardness and wear resistance, and the alloy containing cobalt 30% plating out in sulfate liquor, be nickel cobalt (alloy) 41～42HRC that hardness is the highest, so it is favourable to the use properties of raising reamer to use it as the working lining of reamer.The composition of nickel-cobalt alloy plating is in table 4, and technological specification is in table 5.Due to the impact of diamond particles, the current density in this stage should not obtain too large, otherwise coating crystallization is irregular, and the lattice of the original coating of can not ining succession well does epitaxy, and internal stress is large;
5, further thickening, in order to ensure the quality of connection of coating and knife bar, coating also should further be thickeied approximately 0.8～1mm.The coating in this stage reduces wear resistance, hardness requirement, and more wishes to reduce stress, raising ductility, raising sedimentation velocity, when thickness of coating reaches after requirement, just can close direct supply, unloads mold, and cleans.
Beneficial effect: prior art of the present invention is compared tool and had the following advantages:
1, abrasive particle intensity is high, hardness is large, and abrasive particle durability is high;
2, thermal conductivity is high, and grinding temperature is low;
3, the coefficient of expansion is little, long service life.
Brief description of the drawings
Fig. 1 is the schema for a kind of electroplated diamond goods of the present embodiment.
Embodiment
Below in conjunction with accompanying drawing and by specific embodiment, the present invention is further elaborated, be noted that for those skilled in the art, under the premise without departing from the principles of the invention, the amendment of the various equivalent form of values of the present invention is all fallen within to the application's claims limited range.
Embodiment 1:
The manufacture craft of a kind of electroplated diamond goods as shown in Figure 1, comprises the steps:
1, zinc-plated, at mold endoporus plating one deck low melting point metal tin, when the demoulding, heat, allow tin melt, just can make mold separate with coating.Meeting under smooth demoulding requirement prerequisite, this coating is as far as possible thin, with the size and dimension precision that ensures that reamer is final.Acid bright tinning solution cathode efficiency is high, and sedimentation velocity is fast, and leveling performance is good, therefore adopt it.
2, upper sand, the main task in this stage be make diamond particles evenly, individual layer, more firmly arrange taking hole wall as benchmark.Owing to being the composite plating that carries out diamond particles at endoporus, so adopt sand buring method, when upper sand, tin coating thickness is wanted fine control.Coating is too thick, consolidated diamond particle is too many, easily there is conglomeration, dross phenomenon, not only cause waste, but also follow-up electrolytic coating surface finish is declined, the size of accurately determining the bonding position of knife bar while giving coating and knife bar bonding is brought difficulty, upper sand thickness is 12% best results of diamond median size, can ensure like this to unload after sand with scrub-brush slightly and scrub back and forth from hole, remove floating sand after hole wall be still evenly distributed with one deck sand grains, scoop up with have gentle hands, sand grains can not come off.
3, unload sand, after upper sand completes, sand unnecessary in mold hole be removed.
4, tentatively thickening, in reamer when work,, this layer of metal is the working lining of cutter, its physical and mechanical properties and the use properties of cutter is had to conclusive impact with the fusion degree of diamond particles.Compare with nickel coating, nickel cobalt (alloy) has good hardness and wear resistance, and the alloy containing cobalt 30% plating out in sulfate liquor, be nickel cobalt (alloy) 41～42HRC that hardness is the highest, so it is favourable to the use properties of raising reamer to use it as the working lining of reamer.Due to the impact of diamond particles, the current density in this stage should not obtain too large, otherwise coating crystallization is irregular, and the lattice of the original coating of can not ining succession well does epitaxy, and internal stress is large;
5, further thickening, in order to ensure the quality of connection of coating and knife bar, coating also should further be thickeied about 0.8mm.The coating in this stage reduces wear resistance, hardness requirement, and more wishes to reduce stress, raising ductility, raising sedimentation velocity, when thickness of coating reaches after requirement, just can close direct supply, unloads mold, and cleans.
Electroplated diamond roller is successfully applied to the finishing plain wheel used of form grinding or directly workpiece is carried out to form grinding, and is widely used for machining crankshafts, bearing, hydraulic valve piece etc.The manual needle file of electroplated diamond or machine file, and the diamond grinding head of different shape, the mould of be widely used in processing reconditioning, manufacturing with Wimet or the liquid hard steel material of quenching or workpiece surface and the endoporus of different shape, electroplating diamond reamer has become the instrument of hydraulic efficiency installation and sewing machine component fraising.It has the advantages such as precision is high, efficiency is high, durable.
Embodiment 1:
The manufacture craft of a kind of electroplated diamond goods as shown in Figure 1, comprises the steps:
1, zinc-plated.At mold endoporus plating one deck low melting point metal tin, when the demoulding, heat, allow tin melt, just can make mold separate with coating.Meeting under smooth demoulding requirement prerequisite, this coating is as far as possible thin, with the size and dimension precision that ensures that reamer is final.Acid bright tinning solution cathode efficiency is high, and sedimentation velocity is fast, and leveling performance is good, therefore adopt it.
2, upper sand.The main task in this stage be make diamond particles evenly, individual layer, more firmly arrange taking hole wall as benchmark.Owing to being the composite plating that carries out diamond particles at endoporus, so adopt sand buring method, when upper sand, tin coating thickness is wanted fine control.Coating is too thick, consolidated diamond particle is too many, easily there is conglomeration, dross phenomenon, not only cause waste, but also follow-up electrolytic coating surface finish is declined, the size of accurately determining the bonding position of knife bar while giving coating and knife bar bonding is brought difficulty, upper sand thickness is 15% best results of diamond median size, can ensure like this to unload after sand with scrub-brush slightly and scrub back and forth from hole, remove floating sand after hole wall be still evenly distributed with one deck sand grains, scoop up with have gentle hands, sand grains can not come off.
3, unload sand, after upper sand completes, sand unnecessary in mold hole be removed.
4, tentatively thickening, in reamer when work,, this layer of metal is the working lining of cutter, its physical and mechanical properties and the use properties of cutter is had to conclusive impact with the fusion degree of diamond particles.Compare with nickel coating, nickel cobalt (alloy) has good hardness and wear resistance, and the alloy containing cobalt 30% plating out in sulfate liquor, be nickel cobalt (alloy) 41～42HRC that hardness is the highest, so it is favourable to the use properties of raising reamer to use it as the working lining of reamer.The composition of nickel-cobalt alloy plating is in table 4, and technological specification is in table 5.Due to the impact of diamond particles, the current density in this stage should not obtain too large, otherwise coating crystallization is irregular, and the lattice of the original coating of can not ining succession well does epitaxy, and internal stress is large;
5, further thickening, in order to ensure the quality of connection of coating and knife bar, coating also should further be thickeied about 1mm, the coating in this stage reduces wear resistance, hardness requirement, and more wish to reduce stress, raising ductility, raising sedimentation velocity, when thickness of coating reaches after requirement, just can close direct supply, unload mold, and clean.
Electroplated diamond roller is successfully applied to the finishing plain wheel used of form grinding or directly workpiece is carried out to form grinding, and be widely used for machining crankshafts, bearing, hydraulic valve piece etc., the manual needle file of electroplated diamond or machine file, and the diamond grinding head of different shape, the mould of be widely used in processing reconditioning, manufacturing with Wimet or the liquid hard steel material of quenching or workpiece surface and the endoporus of different shape, electroplating diamond reamer has become the instrument of hydraulic efficiency installation and sewing machine component fraising, and it has the advantages such as precision is high, efficiency is high, durable.
Hard rock adsorbs H+(in weakly acidic solution, and this can prove by adding after diamond pH value of solution to raise), and slowly move to negative electrode under electric field action, finally be adsorbed on cathode surface, like this when constantly in the time that cathode surface adsorbs, just the diamond that is adsorbed on cathode surface is constantly wrapped up, form diamond composite deposite.
Claims (1)
1. a manufacture craft for electroplated diamond goods, is characterized in that: comprise the steps:
A, zinc-plated, at mold endoporus plating one deck low melting point metal tin, heats when the demoulding, allows tin melt, and just can make mold separate with coating;
Meeting under smooth demoulding requirement prerequisite, this coating is as far as possible thin, with the size and dimension precision that ensures that reamer is final;
Acid bright tinning solution cathode efficiency is high, and sedimentation velocity is fast, and leveling performance is good, therefore adopt it;
B, upper sand, the main task in this stage be make diamond particles evenly, individual layer, more firmly arrange taking hole wall as benchmark;
Owing to being the composite plating that carries out diamond particles at endoporus, so adopt sand buring method, upper sand thickness is 12%～15% best results of diamond median size;
C, unload sand, after upper sand completes, sand unnecessary in mold hole be removed;
D, tentatively thickening, when reamer work, this layer of metal is the working lining of cutter, its physical and mechanical properties and the use properties of cutter is had to conclusive impact with the fusion degree of diamond particles, the alloy containing cobalt 30% plating out in sulfate liquor, nickel cobalt (alloy) 41～42HRC that hardness is the highest, so it is favourable to the use properties of raising reamer to use it as the working lining of reamer, due to the impact of diamond particles, the current density in this stage should not obtain too large, otherwise coating crystallization is irregular, the lattice of the original coating of can not ining succession well does epitaxy, and internal stress is large;
E, further thickening, in order to ensure the quality of connection of coating and knife bar, coating also should further be thickeied approximately 0.8～1mm, when thickness of coating reaches after requirement, just can close direct supply, unloads mold, and cleans.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410315089.0A CN104073860A (en) | 2014-07-04 | 2014-07-04 | Process for manufacturing electroplated diamond product |
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| CN201410315089.0A CN104073860A (en) | 2014-07-04 | 2014-07-04 | Process for manufacturing electroplated diamond product |
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| CN104073860A true CN104073860A (en) | 2014-10-01 |
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| CN201410315089.0A Pending CN104073860A (en) | 2014-07-04 | 2014-07-04 | Process for manufacturing electroplated diamond product |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105598866A (en) * | 2015-12-28 | 2016-05-25 | 郑州磨料磨具磨削研究所有限公司 | Method for manufacturing electroplating superhard material grinding wheel |
| CN112301404A (en) * | 2019-07-30 | 2021-02-02 | 中国有色桂林矿产地质研究院有限公司 | Method for manufacturing ultrathin electroplated diamond cutting blade |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2146328Y (en) * | 1992-12-24 | 1993-11-17 | 山西省地矿局二一三临汾钻石工具厂 | Precision microadjustment reamer of diamond |
| CN2147921Y (en) * | 1992-12-24 | 1993-12-01 | 山西省地矿局二一三临汾钻石工具厂 | Diamond reamer for air valve base |
| CN102380605A (en) * | 2011-10-20 | 2012-03-21 | 西安交通大学 | Preparation method of hard alloy/high-chromium alloy-based wear-resistant composite material |
-
2014
- 2014-07-04 CN CN201410315089.0A patent/CN104073860A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2146328Y (en) * | 1992-12-24 | 1993-11-17 | 山西省地矿局二一三临汾钻石工具厂 | Precision microadjustment reamer of diamond |
| CN2147921Y (en) * | 1992-12-24 | 1993-12-01 | 山西省地矿局二一三临汾钻石工具厂 | Diamond reamer for air valve base |
| CN102380605A (en) * | 2011-10-20 | 2012-03-21 | 西安交通大学 | Preparation method of hard alloy/high-chromium alloy-based wear-resistant composite material |
Non-Patent Citations (1)
| Title |
|---|
| 郑广花: "流动电镀金刚石铰刀的复合电镀工艺", 《制造技术与机床》, no. 1, 2 January 2006 (2006-01-02) * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105598866A (en) * | 2015-12-28 | 2016-05-25 | 郑州磨料磨具磨削研究所有限公司 | Method for manufacturing electroplating superhard material grinding wheel |
| CN105598866B (en) * | 2015-12-28 | 2017-07-21 | 郑州磨料磨具磨削研究所有限公司 | A kind of manufacture method for electroplating extra hard material grinding wheel |
| CN112301404A (en) * | 2019-07-30 | 2021-02-02 | 中国有色桂林矿产地质研究院有限公司 | Method for manufacturing ultrathin electroplated diamond cutting blade |
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