CN1695890A - Vacuum brazing method for preparing metal based ultrathin cutting piece made from diamond - Google Patents
Vacuum brazing method for preparing metal based ultrathin cutting piece made from diamond Download PDFInfo
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- CN1695890A CN1695890A CN 200510042824 CN200510042824A CN1695890A CN 1695890 A CN1695890 A CN 1695890A CN 200510042824 CN200510042824 CN 200510042824 CN 200510042824 A CN200510042824 A CN 200510042824A CN 1695890 A CN1695890 A CN 1695890A
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Abstract
A technology for manufacturing an ultra-thin cutting metal-based diamond disc includes proportionally mixing preallyed solder powder, powder of metals and diamond particles, preparing disc blank, correcting the deformation, making internal hole and external circumference, thinning, removing stress, and heat treating. Its advantages are high uniformity, rigidity, strength and adhesion, and long service life.
Description
Technical field
The invention belongs to grinding materials and grinding tool manufacturing technology field, relate to the manufacture method of diamond cut instrument, particularly a kind of vacuum brazing method for preparing of metal based ultrathin cutting piece made from diamond.
Background technology
Cutting piece made from diamond is widely used in the Precision Machining (scribing, fluting, cut-out etc.) of hard brittle materials such as semi-conducting material, glass, pottery, jewel, crystal, ferrite, microelectronic packaging material.Because these material expensive, and more and more higher to the requirement of cutting accuracy, this just requires to use the requirement of thinner cutting blade to reach the accurate precision of micro-machined height and to reduce production costs.For realizing above-mentioned development, reduce manufacturing cost, press for exploitation microfabrication and Ultraprecision Machining and supporting with it cutting tool.
At present, traditional diamond cut piece making method mainly contains pressure sintering and galvanoplastic.Ultra-thin cutting slice with traditional hot-press method manufacturing, because what adopt is that hot pressed sintering formed after multicomponent elemental metals powder and diamond mixed, the sintering temperature height, big to the diamond fire damage, the easy oxidation of carcass, and carcass can not reach complete alloying in very short sintering time, the carcass uneven components, the control of cutting blade difficult quality, so the cutting blade that still useless these class methods are made on the market.Existing superthin diamond cutting blade is many to be fabricated to the master with galvanoplastic, from the manufacturing technology angle, the cutting blade that galvanoplastic are made is that electroplating metal film plays package action to diamond abrasive, only limit to mechanical bond between the two, with respect to the pressure sintering of colding pressing, infiltration infusion process and method for brazing etc., hold therebetween is relatively poor, diamond abrasive is with a little less than carcass combines, abrasive material comes off easily too early, and service life is short, and rigidity and intensity are low.Employing CVD (chemical vapour deposition (CVD)) manufactured diamond multicrystal film ring is abroad also arranged, and then be welded on the matrix, the method has been improved the performance of cutting blade to a certain extent, but the chemical vapour deposition technique equipment needed thereby costs an arm and a leg, the manufacturing process complexity, and diamond drop-off problem and high accuracy connectivity problem still have its deficiency.
Summary of the invention
In order to solve above-mentioned the deficiencies in the prior art, the object of the present invention is to provide a kind of vacuum brazing method for preparing metal based ultrathin cutting piece made from diamond, the cutting blade rigidity and the intensity height that use this method to make, long service life, cost is low and cutting accuracy is high.
Basic design of the present invention is, utilize the vacuum brazing principle, adopt low melting point, easily flow, anti-oxidant, and with diamond the active prealloy superfines of high-affinity to be arranged be solder, after metal matrix (the elemental metals powder by multicomponent constitutes) and diamond evenly mix, under certain vacuum brazing technique condition, realize solder, carcass, metallurgical binding between the diamond three, cutting blade blank ring is made in mold pressing simultaneously, reach thickness through accurate with microfabrication again, machining stress is removed in endoporus and cylindrical equidimension and required precision at last under suitable temperature and rectification distortion heat treatment obtains the metallic bond superthin diamond cutting blade.
Realize that the present invention conceives the technical scheme that is adopted substantially and is, vacuum brazing method for preparing metal based ultrathin cutting piece made from diamond, carry out according to the following steps:
(1) at first carries out the mixing of material powder
With granularity is that-300 orders～-600 purpose prealloy solder powders and granularity are-300 orders～-600 purpose metal simple-substance powder, by weight percentage, the prealloy solder powder gets 20%～40%, the metal simple-substance powder gets 60%～80%, be that the diamond of 5 μ m～50 μ m mixes with granularity again, making diamond concentration is 30%～80%;
(2) make the cutting blade blank
Above-mentioned mixed dusty material is evenly placed graphite jig, carry out vacuum brazing after, make the cutting blade blank,
Or above-mentioned mixed dusty material evenly placed steel mold, and take out after the cold moudling and place graphite jig to carry out vacuum brazing again, make the cutting blade blank;
(3) Bian Xing rectification
With putting into heat-treatment furnace behind the cutting blade blank removal burr, under 200 ℃～400 ℃ temperature, be incubated 30～60 minutes and carry out the straightening processing;
(4) endoporus, cylindrical and reduced thickness processing
Blank after handling is carried out the machined of endoporus, cylindrical and reduced thickness, make it the specification that reaches required;
(5) destressing, rectification distortion heat treatment
The cutting blade that will reach required size is put into heat-treatment furnace, is incubated 30～60 minutes and removes machining stress and straightening processing under 200 ℃～400 ℃ temperature, finally obtains the cutting piece made from diamond of required specification.
Characteristics of the present invention also are, the prealloy solder is selected from a kind of among CuMnTi, CuMnCr, CuSnNiCr or the CuSnNiTi.
Metal simple-substance is selected from one or more combination of following material: Cu, Ni, Co, Fe or Cr.
In the process conditions that directly place graphite jig to carry out vacuum brazing mixed dusty material be: vacuum is 1 * 10
-1Pa～1 * 10
-3Pa, brazing temperature is 700 ℃～850 ℃, and programming rate is 120 ℃/minute～200 ℃/minute, and temperature retention time is 3 minutes～5 minutes, and pressure is 30MPa～35MPa, and the dwell time is 5 minutes～8 minutes, and the type of cooling is an air cooling.
In the process conditions that place steel mold to cold pressing earlier mixed dusty material be: pressure is 5MPa～10MPa, and the dwell time is 2s～5s.
In the process conditions that place steel mold to place graphite jig to carry out vacuum brazing more earlier mixed dusty material be: vacuum is 1 * 10
-1Pa～1 * 10
-3Pa, brazing temperature is 700 ℃～850 ℃, and programming rate is 120 ℃/minute～200 ℃/minute, and temperature retention time is 3 minutes～5 minutes, and pressure is 30MPa～35MPa, and the dwell time is 5 minutes～8 minutes, and the type of cooling is an air cooling.
Manufacture method nationality of the present invention helps the process advantage of soldering manufacture method, utilize the prealloy solder to contain the strong carbide forming element and have good infiltration and spreading property, through combining producing firm metallurgical interface between metal and the diamond behind the chemical reaction, form metallic matrix adamantine brute force is controlled effect, make abrasive particle during cutting processing, be difficult for coming off too early, cutting blade carcass homogeneity of ingredients is good, fire damage is little, effectively raise the service life of cutting blade, and rigidity is strong, the intensity height, cutting blade thickness can arbitrarily be controlled in 20 μ m～200 mu m ranges.
The specific embodiment
The present invention is described in detail below in conjunction with embodiment.
Vacuum brazing method for preparing metal based ultrathin cutting piece made from diamond of the present invention, carry out according to the following steps:
(1) at first carries out the mixing of material powder
With granularity is that-300 orders～-600 purpose prealloy solder powders and granularity are-300 orders～-600 purpose metal simple-substance powder, the prealloy solder powder has that fusing point is low, good in oxidation resistance, good fluidity, with characteristics such as the diamond wellability is good, can effectively improve bond, can be selected from a kind of among CuMnTi, CuMnCr, CuSnNiCr or the CuSnNiTi durability of diamond; The elemental metals powder mainly works to adjust tyre body hardness and rigidity and intensity, and can be selected from one or more combination of following material: Cu, Ni, Co, Fe or Cr during more than one combinations, do not have ratio requirement between each material.By weight percentage, the prealloy solder powder gets 20%～40%, and the metal simple-substance powder gets 60%～80%, is that the diamond of 5 μ m～50 μ m mixes with granularity again, and making diamond concentration is 30%～80%.
(2) make the cutting blade blank
Above-mentioned mixed dusty material is evenly placed graphite jig, carry out vacuum brazing after, make the cutting blade blank, the process conditions of vacuum brazing are: vacuum is 1 * 10
-1Pa～1 * 10
-3Pa, brazing temperature is 700 ℃～850 ℃, and programming rate is 120 ℃/minute～200 ℃/minute, and temperature retention time is 3 minutes～5 minutes, and pressure is 30MPa～35MPa, and the dwell time is 5 minutes～8 minutes, and the type of cooling is an air cooling;
Also can earlier above-mentioned mixed dusty material evenly be placed steel mold, at pressure is 5MPa～10MPa, dwell time is to take out after the cold moudling under the condition of 2s～5s to place graphite jig to carry out vacuum brazing again, and the process conditions of vacuum brazing are: vacuum is 1 * 10
-1Pa～1 * 10
-3Pa, brazing temperature is 700 ℃～850 ℃, and programming rate is 120 ℃/minute～200 ℃/minute, and temperature retention time is 3 minutes～5 minutes, and pressure is 30MPa～35MPa, and the dwell time is 5 minutes～8 minutes, and the type of cooling is an air cooling, makes the cutting blade blank;
(3) Bian Xing rectification
The cutting blade blank after carrying out the deburring processing on the abrasive machine and on the sand paper, is placed between two cast iron surface plates, puts into heat-treatment furnace after clamping with bolt, under 200 ℃～400 ℃ temperature, be incubated 30～60 minutes and carry out the straightening processing;
(4) endoporus, cylindrical and reduced thickness processing
Endoporus, the cylindrical of the cutting blade blank after will correcting with the silk processing of being careful are worked into required size, and to satisfy matching requirements, wherein the endoporus precision is H5, and the cylindrical tolerance is ± 0.02mm,
Reduced thickness processing: with accurate double face abrading machine above-mentioned cutting blade blank ring is ground attenuate processing, used abrasive material is the SiC abrasive material, and thickness deviation is ± 0.003mm;
(5) destressing, rectification distortion heat treatment
The cutting blade of above-mentioned dimensioned to required size placed between two cast iron surface plates, put into heat-treatment furnace after tightening with bolt, under 200 ℃～400 ℃ temperature, be incubated 30～60 minutes and remove machining stress and straightening processing, finally obtain the cutting piece made from diamond of required specification.
Embodiment 1
The preparation percentage by weight is 25%CuMnTi (300 order), 40%Cu (600 order), 24%Ni (400 order), 10%Co (400 order), 1%Cr (300 order), granularity is that 40 μ m, concentration are 75% diamond, pack into after evenly mixing in the graphite jig, carry out vacuum brazing in vacuum brazing furnace, concrete soldering processes are: vacuum is 1 * 10
-1Pa, brazing temperature is 850 ℃, 200 ℃/minute of programming rates, temperature retention time 3 minutes, pressure is 35MPa, and the dwell time is 5min, and the type of cooling is an air cooling; Cutting blade blank after the vacuum brazing is carried out deburring to be reached after the straightening processing was carried out in insulation under 400 ℃ of temperature in 30 minutes, utilization be careful a silk cutting endoporus and a cylindrical, utilize precision grinder to be thinned to 200 μ m, machining stress and straightening processing were removed in insulation in 30 minutes under 200 ℃ of temperature at last, promptly obtained superthin diamond cutting blade.
Embodiment 2
The preparation percentage by weight is 30%CuMnCr (300 order), 34%Cu (600 order), 20%Ni (400 order), 15%Co (400 order), 1%Cr (300 order), granularity is that 5 μ m, concentration are 80% diamond, pack into after evenly mixing in the graphite jig, carry out vacuum brazing in vacuum brazing furnace, concrete soldering processes are: vacuum is 1 * 10
-3Pa, brazing temperature is 700 ℃, and programming rate is at 120 ℃/minute, and temperature retention time is 5 minutes, and pressure is 35MPa, and the dwell time is 5min, and the type of cooling is an air cooling; Cutting blade blank after the vacuum brazing is carried out deburring to be reached after the straightening processing was carried out in insulation under 200 ℃ of temperature in 45 minutes, utilization be careful a silk cutting endoporus and a cylindrical, utilize precision grinder to be thinned to 20 μ m, machining stress and straightening processing were removed in insulation in 45 minutes under 400 ℃ of temperature at last, promptly obtained the superthin diamond cutting blade of 20 μ m.
Embodiment 3
The preparation percentage by weight is 20%CuSnNiCr (300 order), 40%Cu (600 order), 20%Ni (400 order), 10%Co (400 order), 10%Fe (300 order), granularity is that 50 μ m, concentration are 35% diamond, pack into after evenly mixing in the graphite jig, carry out vacuum brazing in vacuum brazing furnace, concrete soldering processes are: vacuum is 1 * 10
-3Pa, brazing temperature is 780 ℃, and programming rate is at 150 ℃/minute, and temperature retention time is 3 minutes, and pressure is 30MPa, and the dwell time is 8min, and the type of cooling is an air cooling; Cutting blade blank after the vacuum brazing is carried out deburring to be reached after the straightening processing was carried out in insulation under 300 ℃ of temperature in 60 minutes, utilization be careful a silk cutting endoporus and a cylindrical, utilize precision grinder to be thinned to 100 μ m, machining stress and straightening processing were removed in insulation in 60 minutes under 400 ℃ of temperature at last, promptly obtained the superthin diamond cutting blade that thickness is 100 μ m.
Embodiment 4
The preparation percentage by weight is 40%CuSnNiCr (300 order), 30%Cu (600 order), 10%Ni (400 order), 10%Co (400 order), 10%Fe (300 order), granularity is that 20 μ m, concentration are 30% diamond, in the steel mold of packing into after evenly mixing, at pressure is 10MPa, and the dwell time is to carry out taking out after the moulding under the cold-press process condition of 2s, places graphite jig then, carry out vacuum brazing in vacuum brazing furnace, concrete soldering processes are: vacuum is 1 * 10
-3Pa, brazing temperature is 850 ℃, and programming rate is at 200 ℃/minute, and temperature retention time is 3 minutes, and pressure is 30MPa, and the dwell time is 5min, and the type of cooling is an air cooling; Cutting blade blank after the vacuum brazing is carried out deburring to be reached after the straightening processing was carried out in insulation under 200 ℃ of temperature in 30 minutes, utilization be careful a silk cutting endoporus and a cylindrical, utilize precision grinder to be thinned to 50 μ m, machining stress and straightening processing were removed in insulation in 30 minutes under 300 ℃ of temperature at last, promptly obtained the superthin diamond cutting blade that thickness is 50 μ m.
Embodiment 5
The preparation percentage by weight is 33%CuSnNiTi (300 order), 32%Cu (600 order), 15%Ni (400 order), 10%Co (400 order), 10%Fe (300 order), granularity is that 10 μ m, concentration are 50% diamond, in the steel mold of packing into after evenly mixing, at pressure is 5MPa, and the dwell time is to carry out taking out after the moulding under the cold-press process condition of 5s, places graphite jig then, carry out vacuum brazing in vacuum brazing furnace, concrete soldering processes are: vacuum is 1 * 10
-1Pa, brazing temperature is 700 ℃, and programming rate is at 120 ℃/minute, and temperature retention time is 5 minutes, and pressure is 35MPa, and the dwell time is 8min, and the type of cooling is an air cooling; Cutting blade blank after the vacuum brazing is carried out deburring to be reached after the straightening processing was carried out in insulation under 200 ℃ of temperature in 30 minutes, utilization be careful a silk cutting endoporus and a cylindrical, utilize precision grinder to be thinned to 150 μ m, machining stress and straightening processing were removed in insulation in 30 minutes under 200 ℃ of temperature at last, promptly obtained the superthin diamond cutting blade that thickness is 150 μ m.
Claims (6)
1. a vacuum brazing method for preparing metal based ultrathin cutting piece made from diamond is characterized in that, this method is carried out according to the following steps:
(1) at first carries out the mixing of material powder
With granularity is that-300 orders～-600 purpose prealloy solder powders and granularity are-300 orders～-600 purpose metal simple-substance powder, by weight percentage, the prealloy solder powder gets 20%～40%, the metal simple-substance powder gets 60%～80%, be that the diamond of 5 μ m～50 μ m mixes with granularity again, making diamond concentration is 30%～80%;
(2) make the cutting blade blank
Above-mentioned mixed dusty material is evenly placed graphite jig, carry out vacuum brazing after, make the cutting blade blank,
Or above-mentioned mixed dusty material evenly placed steel mold, and take out after the cold moudling and place graphite jig to carry out vacuum brazing again, make the cutting blade blank;
(3) Bian Xing rectification
With putting into heat-treatment furnace behind the cutting blade blank removal burr, under 200 ℃～400 ℃ temperature, be incubated 30～60 minutes and carry out the straightening processing;
(4) endoporus, cylindrical and reduced thickness processing
Blank after handling is carried out the machined of endoporus, cylindrical and reduced thickness, make it the specification that reaches required;
(5) destressing, rectification distortion heat treatment
The cutting blade that will reach required size is put into heat-treatment furnace, is incubated 30～60 minutes and removes machining stress and straightening processing under 200 ℃～400 ℃ temperature, finally obtains the cutting piece made from diamond of required specification.
2. according to the described manufacture method of claim 1, it is characterized in that described prealloy solder is selected from a kind of among CuMnTi, CuMnCr, CuSnNiCr or the CuSnNiTi.
3. according to the described manufacture method of claim 1, it is characterized in that described metal simple-substance is selected from one or more combination of following material: Cu, Ni, Co, Fe or Cr.
4. according to the described manufacture method of claim 1, it is characterized in that, in the process conditions that directly place graphite jig to carry out vacuum brazing mixed dusty material be: vacuum is 1 * 10
-1Pa～1 * 10
-3Pa, brazing temperature is 700 ℃～850 ℃, and programming rate is 120 ℃/minute～200 ℃/minute, and temperature retention time is 3 minutes～5 minutes, and pressure is 30MPa～35MPa, and the dwell time is 5 minutes～8 minutes, and the type of cooling is an air cooling.
5. according to the described manufacture method of claim 1, it is characterized in that, in the process conditions that place steel mold to cold pressing earlier mixed dusty material be: pressure is 5MPa～10MPa, and the dwell time is 2s～5s.
6. according to the described manufacture method of claim 1, it is characterized in that, in the process conditions that place steel mold to place graphite jig to carry out vacuum brazing more earlier mixed dusty material be: vacuum is 1 * 10
-1Pa～1 * 10
-3Pa, brazing temperature is 700 ℃～850 ℃, and programming rate is 120 ℃/minute～200 ℃/minute, and temperature retention time is 3 minutes～5 minutes, and pressure is 30MPa～35MPa, and the dwell time is 5 minutes～8 minutes, and the type of cooling is an air cooling.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100434228C (en) * | 2006-11-02 | 2008-11-19 | 西安交通大学 | Copper-manganese based prealloy powder for metal-diamond soldering, and its prodn. method |
| CN101879597A (en) * | 2010-06-11 | 2010-11-10 | 西安交通大学 | Preparation method of metal sintering-type diamond saw cutter for cutting QFN (Quad Flat Non-Leaded Package) packaging device |
| CN102513632A (en) * | 2011-11-18 | 2012-06-27 | 南京航空航天大学 | Preparation method oriented to fine-grain diamond abrasive material single-layer soldering tool |
| CN103231064A (en) * | 2013-04-28 | 2013-08-07 | 中原工学院 | Manufacturing method for novel nickel base solder brazing monolayer diamond grinding wheel |
| CN104128606A (en) * | 2014-08-20 | 2014-11-05 | 丹阳市德源精密工具有限公司 | Method for manufacturing diamond saw blade |
| CN104384648A (en) * | 2014-10-14 | 2015-03-04 | 河南理工大学 | Rapid manufacturing method for brazing coal cutting pick |
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| CN102039102B (en) * | 2009-10-12 | 2012-09-19 | 河南飞孟金刚石工业有限公司 | Method for manufacturing polycrystalline diamond compact (PDC) by using vacuum brazing technology |
| CN101837494B (en) * | 2010-05-27 | 2011-08-31 | 成都安迪生测量有限公司 | Vacuum nickel-based brazing and thermal treatment process for Coriolis mass flowmeter |
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| US5809848A (en) * | 1996-02-12 | 1998-09-22 | Credo Tool Company | Method of making a carbide cutting insert |
| KR100360669B1 (en) * | 2000-02-10 | 2002-11-18 | 이화다이아몬드공업 주식회사 | Abrasive dressing tool and manufac ture method of abrasive dressing tool |
| JP3795786B2 (en) * | 2001-10-09 | 2006-07-12 | 敬久 山崎 | Brazed diamond and diamond brazing method |
| CN1597219A (en) * | 2004-09-08 | 2005-03-23 | 华侨大学 | Preparation method of single layer soldering diamond tool |
| CN1243626C (en) * | 2004-10-22 | 2006-03-01 | 哈尔滨工业大学 | Brazing alloy for brazing silicon nitride ceramic and the method of connecting silicon nitride ceramic with the brazing alloy |
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- 2005-06-16 CN CNB2005100428246A patent/CN1318185C/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100434228C (en) * | 2006-11-02 | 2008-11-19 | 西安交通大学 | Copper-manganese based prealloy powder for metal-diamond soldering, and its prodn. method |
| CN101879597A (en) * | 2010-06-11 | 2010-11-10 | 西安交通大学 | Preparation method of metal sintering-type diamond saw cutter for cutting QFN (Quad Flat Non-Leaded Package) packaging device |
| CN101879597B (en) * | 2010-06-11 | 2011-12-07 | 西安交通大学 | Preparation method of metal sintering-type diamond saw cutter for cutting QFN (Quad Flat Non-Leaded Package) packaging device |
| CN102513632A (en) * | 2011-11-18 | 2012-06-27 | 南京航空航天大学 | Preparation method oriented to fine-grain diamond abrasive material single-layer soldering tool |
| CN102513632B (en) * | 2011-11-18 | 2015-03-25 | 南京航空航天大学 | Preparation method oriented to fine-grain diamond abrasive material single-layer soldering tool |
| CN103231064A (en) * | 2013-04-28 | 2013-08-07 | 中原工学院 | Manufacturing method for novel nickel base solder brazing monolayer diamond grinding wheel |
| CN103231064B (en) * | 2013-04-28 | 2014-12-10 | 中原工学院 | Manufacturing method for novel nickel base solder brazing monolayer diamond grinding wheel |
| CN104128606A (en) * | 2014-08-20 | 2014-11-05 | 丹阳市德源精密工具有限公司 | Method for manufacturing diamond saw blade |
| CN104384648A (en) * | 2014-10-14 | 2015-03-04 | 河南理工大学 | Rapid manufacturing method for brazing coal cutting pick |
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Granted publication date: 20070530 Termination date: 20120616 |