CN100581736C - Diamond abrasion block and its preparation method - Google Patents
Diamond abrasion block and its preparation method Download PDFInfo
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- CN100581736C CN100581736C CN200810227279A CN200810227279A CN100581736C CN 100581736 C CN100581736 C CN 100581736C CN 200810227279 A CN200810227279 A CN 200810227279A CN 200810227279 A CN200810227279 A CN 200810227279A CN 100581736 C CN100581736 C CN 100581736C
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Abstract
The invention provides a method for preparing a diamond grinding block, which belongs to the technical field of powder metallurgy metal base composite material. The method comprises the following steps: using Fe-Cu-Sn superfine prealloyed powder and low grade diamond as raw materials, using a nontoxic gel injection mold forming technology and a low temperature pressureless sintering technology to prepare tool bits, and then adhering the tool bit by using epoxy resin to assemble the tool bits together so as to obtain a high performance diamond grinding block which is applied to the stone materials and ceramics polishing production line. The method has the advantages of no noble metals such as Co, Ni and the like, low cost, low sintering temperature for the tool bits, small thermal damage to the diamond, good grinding and polishing effect, long service life, and good product consistency, environmental protection and no pollution.
Description
Technical field
The present invention relates to a kind of diamond grinding block and preparation method, belong to the powder metallurgy metal base composite material technical field.
Background technology
Abrading block is one of main tool of pottery, the application of stone polishing line, and its effect is that polished bricks is carried out grinding, polishing, divides corase grind, fine grinding, the several grades of correct grinding.Present stage, the common abrading block that pottery, stone polishing line use mostly is carborundum-magnesium chloride cement composite material manufacturing, its grinding efficiency and wearability are very poor, and average life span has only 2 hours, exist to consume shortcomings such as big, that replacing is frequent, discarded object is many, environmental pollution is big, cutting force is weak.
The diamond grinding block of China's production at present adopts metal dust and diamond single crystal more, forms through high temperature hot pressing densified sintering product.For example Chinese patent (patent No. 94114204.3) has been announced a kind of diamond grinding block and sintering method, be that metal dust such as the cobalt of diamond single crystal particle and certain content, copper, nickel, iron, tin, chromium, zinc and tungsten-carbide powder are mixed, form through hot pressed sintering, be mainly used in stone polishing, can increase substantially the service life of abrading block.Weak point is: owing to use expensive metal such as a large amount of cobalts, nickel, the cost of this abrading block is higher.
Summary of the invention
The present invention seeks to adopt expensive metal such as the alternative cobalt of Fe-Cu-Sn, nickel cheaply, reduce the preparation cost of diamond grinding block.
A kind of diamond grinding block and preparation method is characterized in that it being that employing ultra-fine pre-alloyed powder of Fe-Cu-Sn and low product grade diamond are raw material, adopt nontoxic gel casting forming technology and low temperature pressureless sintering technology to prepare diamond grinding block, and concrete preparation technology is:
1. select materials
Carcass powder is selected the ultra-fine pre-alloyed powder of Fe-Cu-Sn for use, and its Fisher particle size is 2～5 μ m, and composition is by mass percentage: contain Fe amount 30%～60%; Contain Cu amount 30%～40%, stanniferous amount 10%～30%.
Select low product grade diamond (I moulding mixture, II moulding mixture or both mix use) for use, roughly grind or the fine grinding grade, select granularity 100 orders～500 purpose diamonds for use according to abrading block.
2. batch mixing
With batch mixer carcass powder is mixed in proportion with diamond, diamond accounts for mixture quality than 2.5%～4.5%.
3. gel casting
At first dispose nontoxic gel injection-moulding system premixed liquid, collocation method is to add starch 10～20g, polyvinylpyrrolidone 15～30g, polyacrylic acid 5～10g, glycerine 3～6g, isooctanol 3～6g in every liter of deionized water.Press the per kilogram compound then and add 150～200ml premixed liquid, make slurry by stirring with appropriate viscosity and good fluidity.Use press injector with in the slurry injected plastic mould at last, be incubated 20 minutes down, be cooled to drying at room temperature then 24～48 hours, obtain the abrading block base substrate at 80 ℃～90 ℃.
4. pressureless sintering
Dried base substrate in the hydrogen atmosphere, is incubated 30～60min in 700～800 ℃ in sintering furnace.
5. assembling
10-30 sintering cutter head is assembled into together with epoxy bond.Abrading block by corase grind, fine grinding Grade numbers is: 36#, and 46#, 60#, 80#, 120#, 150#, 180#, 240# is several.
The invention has the advantages that:
1. adopt the ultra-fine pre-alloyed powder of ultra-fine Fe-Cu-Sn to make diamond grinding block, replace expensive metal such as Co, Ni with cheap Fe, cost reduces significantly, in addition, because the pre-alloyed powder granularity only is 2～5 μ m, sintering temperature is low, reduces the diamond fire damage.
2. sintering is at reducing atmosphere (H
2) in carry out, belong to pressureless sintering, can by adjusting sintering process parameter control abrading block metal matrix porosity and performances such as hardness, wearability, obtain best grinding-polishing effect in conjunction with the tyre body alloy composition.
3. adopt the gel casting technology to prepare the abrading block base substrate, be suitable for producing in batches, good product consistency, die cost is low.
4. adopt nontoxic gel casting system, environmental friendliness, pollution-free.
The specific embodiment
Embodiment 1:
Preparation 36# abrading block, carry out as follows:
1. to select composition for use be the ultra-fine pre-alloyed powder of Fe60Cu30Sn10 to carcass powder, and selecting granularity for use is 100/120 diamond.
2. with batch mixer carcass powder is mixed in proportion with diamond, diamond content is 2.5%.
3. in the 1L deionized water, add starch 10g, polyvinylpyrrolidone 15g, polyacrylic acid 5g, glycerine 3g, isooctanol 3g disposes nontoxic gel injection-moulding system premixed liquid.Add the 200ml premixed liquid by every kg compound then, make slurry by stirring with appropriate viscosity and good fluidity.Use press injector with in the slurry injected plastic mould at last, be incubated 20 minutes down, be cooled to drying at room temperature then 48 hours, obtain the abrading block base substrate at 80 ℃～90 ℃.
4. dried base substrate in the hydrogen atmosphere, is incubated 60min in 800 ℃ in sintering furnace.
5. 10 sintering cutter heads are assembled into together with epoxy bond.
Embodiment 2:
Preparation 60# abrading block, carry out as follows:
1. to select composition for use be the ultra-fine pre-alloyed powder of Fe50Cu35Sn15 to carcass powder, and selecting granularity for use is 140/170 diamond.
2. with batch mixer carcass powder is mixed in proportion with diamond single crystal, diamond content is 4.0%.
3. in the 1L deionized water, add starch 20g, polyvinylpyrrolidone 30g, polyacrylic acid 10g, glycerine 6g, isooctanol 6g disposes nontoxic gel injection-moulding system premixed liquid.Add the 150ml premixed liquid by every kg metal dust and diamond compound then, make slurry by stirring with appropriate viscosity and good fluidity.Use press injector with in the slurry injected plastic mould at last, be incubated 20 minutes down, be cooled to drying at room temperature then 36 hours, obtain the abrading block base substrate at 80 ℃～90 ℃
4. dried base substrate in the hydrogen atmosphere, is incubated 50min in 750 ℃ in sintering furnace.
5. 15 sintering cutter heads are assembled into together with epoxy bond.
Embodiment 3:
Preparation 120# abrading block, carry out as follows:
1. to select composition for use be the ultra-fine pre-alloyed powder of Fe35Cu40Sn25 to carcass powder, and selecting granularity for use is 230/270 diamond.
2. with batch mixer carcass powder is mixed in proportion with diamond, diamond content is 4.5%.
3. in the 1L deionized water, add starch 20g, polyvinylpyrrolidone 30g, polyacrylic acid 10g, glycerine 6g, isooctanol 6g disposes nontoxic gel injection-moulding system premixed liquid.Add the 150ml premixed liquid by every kg metal dust and diamond compound then, make slurry by stirring with appropriate viscosity and good fluidity.Use press injector with in the slurry injected plastic mould at last, be incubated 20 minutes down, be cooled to drying at room temperature then 36 hours, obtain the abrading block base substrate at 80 ℃～90 ℃
4. dried base substrate in the hydrogen atmosphere, is incubated 30min in 720 ℃ in sintering furnace.
5. 20 sintering cutter heads are assembled into together with epoxy bond.
Embodiment 4:
Preparation 240# abrading block, carry out as follows:
1. to select composition for use be the ultra-fine pre-alloyed powder of Fe35Cu37Sn28 to carcass powder, and selecting granularity for use is 400/500 diamond.
2. with batch mixer carcass powder is mixed in proportion with diamond, diamond content is 4.5%.
3. in the 1L deionized water, add starch 20g, polyvinylpyrrolidone 30g, polyacrylic acid 10g, glycerine 6g, isooctanol 6g disposes nontoxic gel injection-moulding system premixed liquid.Add the 150ml premixed liquid by every kg compound then, make slurry by stirring with appropriate viscosity and good fluidity.Use press injector with in the slurry injected plastic mould at last, be incubated 20 minutes down, be cooled to drying at room temperature then 36 hours, obtain the abrading block base substrate at 80 ℃～90 ℃.
4. dried base substrate in the hydrogen atmosphere, is incubated 30min in 700 ℃ in sintering furnace.
5. 25 sintering cutter heads are assembled into together with epoxy bond.
Claims (1)
1, a kind of preparation method of diamond grinding block is characterized in that: preparation technology is:
A, select materials
Carcass powder is selected the ultra-fine pre-alloyed powder of Fe-Cu-Sn for use, and its Fisher particle size is 2～5 μ m, and composition is by mass percentage: contain Fe amount 30%～60%; Contain Cu amount 30%～40%, stanniferous amount 10%～30%;
Select for use I moulding mixture, II moulding mixture or both to mix the low product grade diamond of use, according to abrading block corase grind or fine grinding grade, diamond grit is 100 orders～500 orders;
B, batch mixing
With batch mixer carcass powder is mixed in proportion with diamond, diamond accounts for mixture quality than 2.5%～4.5%;
C, gel casting
At first dispose nontoxic gel injection-moulding system premixed liquid, collocation method is to add starch 10～20g, polyvinylpyrrolidone 15～30g, polyacrylic acid 5～10g, glycerine 3～6g, isooctanol 3～6g in every liter of deionized water; Press the per kilogram compound then and add 150～200ml premixed liquid, make slurry by stirring; Use press injector with in the slurry injected plastic mould at last, be incubated 20 minutes down, be cooled to drying at room temperature then 24～48 hours, obtain the abrading block base substrate at 80 ℃～90 ℃;
D, pressureless sintering
Dried base substrate in the hydrogen atmosphere, is incubated 30～60min in 700～800 ℃ in sintering furnace;
E, assembling
10-30 sintering cutter head is assembled into together with epoxy bond, and abrading block by corase grind, fine grinding Grade numbers is: 36#, 46#, 60#, 80#, 120#, 150#, 180#, 240#.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810227279A CN100581736C (en) | 2008-11-25 | 2008-11-25 | Diamond abrasion block and its preparation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810227279A CN100581736C (en) | 2008-11-25 | 2008-11-25 | Diamond abrasion block and its preparation method |
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| Publication Number | Publication Date |
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| CN101407045A CN101407045A (en) | 2009-04-15 |
| CN100581736C true CN100581736C (en) | 2010-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200810227279A Expired - Fee Related CN100581736C (en) | 2008-11-25 | 2008-11-25 | Diamond abrasion block and its preparation method |
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Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101934500B (en) * | 2010-05-07 | 2012-01-18 | 广东奔朗新材料股份有限公司 | Diamond rubbing block and fabricating method thereof |
| CN102152407A (en) * | 2011-01-20 | 2011-08-17 | 湖北昌利超硬材料有限公司 | Cobalt-free low-nickel pre-alloy-based dry cut diamond circular saw blade |
| CN102240992A (en) * | 2011-06-14 | 2011-11-16 | 北京华特科园超硬材料有限公司 | Diamond grinding wheel for grinding glass, and preparation method of diamond grinding wheel |
| CN102350738A (en) * | 2011-09-08 | 2012-02-15 | 湖北昌利超硬材料有限公司 | Pre-alloyed ultra-fine powder carcass diamond tool |
| CN104128893A (en) * | 2014-07-31 | 2014-11-05 | 泉州众志金刚石工具有限公司 | Diamond abrasive grinding block |
| CN104128613A (en) * | 2014-08-20 | 2014-11-05 | 丹阳市德源精密工具有限公司 | Preparation method for pre-alloyed powder |
| CN106270480A (en) * | 2015-05-22 | 2017-01-04 | 江苏益林金刚石工具有限公司 | A kind of Prealloyed carcass powder |
| CN105835235B (en) * | 2016-05-19 | 2018-04-06 | 江苏超峰工具有限公司 | A kind of dry ripple saw blade cold pressing forming process of high-strength diamond |
| CN106825568A (en) * | 2017-01-24 | 2017-06-13 | 中国地质大学（武汉） | A kind of 3D printing manufacture method of metal matrix diamond composites and its parts |
| CN107502808A (en) * | 2017-07-28 | 2017-12-22 | 义乌市台荣超硬制品有限公司 | A kind of complete pre-alloyed diamond tool tyre case powder |
| CN108907176B (en) * | 2018-07-19 | 2020-04-10 | 江苏华昌工具制造有限公司 | Matrix powder and diamond sintered body |
| CN109128182B (en) * | 2018-08-02 | 2020-12-25 | 泉州众志金刚石工具有限公司 | Production method of diamond gang saw tool bit |
| CN108994744A (en) * | 2018-08-24 | 2018-12-14 | 厦门台颖金刚石制品有限公司 | A kind of wear-resisting diamond disk and preparation method thereof |
| CN110596163B (en) * | 2019-09-27 | 2020-07-17 | 西北有色金属研究院 | Preparation method of EBSD sample of titanium alloy fracture section |
| CN113414878B (en) * | 2021-06-16 | 2023-12-26 | 江苏友和工具有限公司 | Diamond tool suitable for high-strength rock exploitation |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB972835A (en) * | 1960-04-28 | 1964-10-21 | Norton Co | Grinding tool |
-
2008
- 2008-11-25 CN CN200810227279A patent/CN100581736C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB972835A (en) * | 1960-04-28 | 1964-10-21 | Norton Co | Grinding tool |
Non-Patent Citations (2)
| Title |
|---|
| 预合金粉末在金刚石工具中的应用. 申思，宋月清等.粉末冶金工业，第16卷第6期. 2006 |
| 预合金粉末在金刚石工具中的应用. 申思，宋月清等.粉末冶金工业，第16卷第6期. 2006 * |
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| CN101407045A (en) | 2009-04-15 |
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Granted publication date: 20100120 Termination date: 20121125 |