CN102357657A - Preparation method of superfine hard alloy blade for processing automobile aluminum alloy - Google Patents
Preparation method of superfine hard alloy blade for processing automobile aluminum alloy Download PDFInfo
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- CN102357657A CN102357657A CN2011103105961A CN201110310596A CN102357657A CN 102357657 A CN102357657 A CN 102357657A CN 2011103105961 A CN2011103105961 A CN 2011103105961A CN 201110310596 A CN201110310596 A CN 201110310596A CN 102357657 A CN102357657 A CN 102357657A
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Abstract
The invention discloses a preparation method of a superfine hard alloy blade for processing automobile aluminum alloy. The method comprises the following concrete steps: mixing the superfine powder which is 0.4-0.6 microns according to certain proportion; performing high-energy ball milling and pressing to obtain a cutter; and finally sintering and moulding the cutter in a vacuum sintering furnace. The superfine hard alloy cutter provided by the invention is used for cutting aluminum alloy, has long cutting life and good impact resistance, and is suitable for high-speed cutting of aluminum alloy; moreover the workpiece has high surface quality.
Description
Technical field
A kind of aluminium alloy car processing belongs to field of powder metallurgy with the preparation method of ultra-fine cemented carbide blade.
Background technology
Aluminum alloy materials hardness is low, fusing point is low and when cutting is prone to form built-up edge, thereby causes workpiece to be machined poor dimensional precision, rough surface etc.So, when cutting aluminum alloy, select the quality important influence of suitable cutter to product.Traditional aluminium alloy cutting tool is diamond cutter (in the application of whole PCD cutter, has approximately according to statistics 67% be used for aluminium alloy processing); Has long, advantage such as cutting speed is high, resistance to impact good and workpiece surface quality is stable of working durability; But costing an arm and a leg of diamond cutter makes that the aluminium alloy processing cost is high.
Carbide alloy is to use powder metallurgy process production, the carbide alloy of forming by the carbide and the soft bonded metal of hard, thereby have high intensity and hardness; Wearability is good; A series of premium properties such as red hardness is good, and thermal coefficient of expansion is little, and elastic modelling quantity height and chemical stability are good.Especially the grain size of material reaches (being ultra-fine size) after 0.1～0.6 μ m, and its hardness and intensity will have big breakthrough, can be used for the cut of aluminum alloy materials.
The method of making ultra-fine cemented carbide at present is mainly takes ultra-fine WC powder, ultra-fine Co powder, and add a certain amount of grain inhibitor.Wherein the preparation method of ultrafine WC powder mainly contains direct carborization, hydrogen reducing WO carbonizatin method, fluid bed reduction and carbonization method, and the grain inhibitor of interpolation mainly contains: VC, Cr
3C
2, NbC, TaC, TiC, ZrC, Mo
2C with
Deng.Through a large amount of experiments, and the integrated practice experience, the preparation method of a kind of aluminium alloy car processing invented out with the ultra-fine cemented carbide blade.
Summary of the invention
The present invention is primarily aimed at ultra-fine cemented carbide and in mechanical milling process, reunites easily, and characteristics such as problem such as in sintering process, be prone to grow up are taked different measures.Its process mainly comprises the preparation of powder, high-energy ball milling, and four steps of compression moulding and vacuum-sintering:
(1) be the ultrafine WC powder of 0.4～0.6 μ m to granularity earlier, granularity is the Co powder of 0.8～1.2 μ m, and granularity is VC and the Cr of 1.0～1.5 μ m
3C
2Powder carries out a certain proportion of mixed-powder that is mixed with;
(2) mixed-powder being carried out high-energy ball milling handles;
(3) powder compaction after the ball-milling treatment is become green compact;
(4) green compact are carried out vacuum-sintering;
Preparation method's process of ultra-fine cemented carbide blade of the present invention, further characteristic:
(1) the Co powder is 5.0～7.0wt%, inhibitor VC and Cr
3C
2Be 0.4～0.6% (mass ratio is 1: 1), all the other are ultrafine WC;
(2) with the mixed-powder for preparing; In planetary ball mill, carrying out high-energy ball milling handles; Ball-milling medium is an absolute ethyl alcohol, and drum's speed of rotation is 200～400r/min, and milling time is 24～36h; Mill ball is the ultra-fine cemented carbide ball of diameter of phi 6mm, and ratio of grinding media to material (wt%) is 50: 1～100: 1;
(3) powder for drying after utilizing vacuum drying oven with ball milling is pressed on the 200T forcing press after adding 80% SD rubber-moulding agent drying;
(4) green compact of compression moulding sinter molding in vacuum sintering furnace, wherein vacuum is 1～5Pa, sintering temperature is 1420 ℃, insulation 30min;
The invention has the advantages that: the carbide alloy that this method is produced has high rigidity; High strength, high tenacity, high heat conductance and high anti-wear performance; Its blade has long, good resistance to impact of high working durability and high workpiece surface quality, and is applicable to the cutting of high speed aluminium alloy.
The specific embodiment
Instance 1: take by weighing ultrafine WC powder 92.9g, the Co powder is 6.5g, inhibitor (VC, Cr
3C
2, mass ratio is 1: 1) and 0.6g is mixed with mixed-powder.With the mixed-powder for preparing, in planetary ball mill, carry out high-energy ball milling and handle, wherein ball-milling medium is an absolute ethyl alcohol; Drum's speed of rotation is 400r/min; Milling time is 36h, and mill ball is a diameter of phi 8mm ultra-fine cemented carbide ball, and ratio of grinding media to material (wt%) is 100: 1.Powder for drying after utilizing vacuum drying oven with ball milling is added 80% SD rubber-moulding agent, and dry back is pressed on the 200T forcing press.The green compact of compression moulding sinter molding in vacuum sintering furnace, wherein vacuum is 1～5Pa, sintering temperature is 1420 ℃, insulation 30min.
Instance 2: take by weighing ultrafine WC powder 94.1g, the Co powder is 5.5g, inhibitor (VC, Cr
3C
2, mass ratio is 1: 1) and 0.4g is mixed with mixed-powder.With the mixed-powder for preparing, in planetary ball mill, carry out high-energy ball milling and handle, wherein ball-milling medium is an absolute ethyl alcohol; Drum's speed of rotation is 400r/min; Milling time is 36h, and mill ball is a diameter of phi 8mm ultra-fine cemented carbide ball, and ratio of grinding media to material (wt%) is 100: 1.Powder for drying after utilizing vacuum drying oven with ball milling adds 80% SD rubber-moulding agent, and dry back is pressed on the 200T forcing press.The green compact of compression moulding sinter molding in vacuum sintering furnace, wherein vacuum is 1～5Pa, sintering temperature is 1420 ℃, insulation 30min.
Claims (2)
1. an aluminium alloy car is processed the preparation method with the ultra-fine cemented carbide blade, it is characterized in that mainly comprising the preparation of powder, high-energy ball milling, and four steps of compression moulding and vacuum-sintering:
(1) be the ultrafine WC powder of 0.4～0.6 μ m to granularity earlier, granularity is the Co powder of 0.8～1.2 μ m, and granularity is VC and the Cr of 1.0～1.5 μ m
3C
2Powder carries out a certain proportion of mixed-powder that is mixed with;
(2) mixed-powder being carried out high-energy ball milling handles;
(3) powder compaction after the ball-milling treatment is become green compact;
(4) green compact are carried out vacuum-sintering.
2. ultrafine hard alloy preparation method process according to claim 1, its further characteristic is:
(1) the Co powder is 5.0～7.0wt%, inhibitor VC and Cr
3C
2Be 0.4～0.6% (mass ratio is 1: 1), all the other are ultrafine WC;
(2) with the mixed-powder for preparing; In planetary ball mill, carrying out high-energy ball milling handles; Ball-milling medium is an absolute ethyl alcohol, and drum's speed of rotation is 200～400r/min, and milling time is 24～36h; Mill ball is the ultra-fine cemented carbide ball of diameter of phi 6mm, and ratio of grinding media to material (wt%) is 50: 1～100: 1;
(3) powder for drying after utilizing vacuum drying oven with ball milling is pressed on the 200T forcing press after adding 80% SD rubber-moulding agent drying;
(4) green compact of compression moulding sinter molding in vacuum sintering furnace, wherein vacuum is 1～5Pa, sintering temperature is 1420 ℃, insulation 30min.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103105961A CN102357657A (en) | 2011-10-14 | 2011-10-14 | Preparation method of superfine hard alloy blade for processing automobile aluminum alloy |
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|---|---|---|---|
| CN2011103105961A CN102357657A (en) | 2011-10-14 | 2011-10-14 | Preparation method of superfine hard alloy blade for processing automobile aluminum alloy |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102990303A (en) * | 2012-12-03 | 2013-03-27 | 浙江东钨实业有限公司 | Manufacturing method of hard alloy special-shaped product |
| CN103785839A (en) * | 2014-01-16 | 2014-05-14 | 龙岩市棱利工贸有限公司 | Forming method of hard alloy spiral blade |
| CN103911536A (en) * | 2014-04-02 | 2014-07-09 | 成都工具研究所有限公司 | Cr containing high-grade steel hard alloy cutter material for petroleum pipeline thread machining |
| CN104308230A (en) * | 2014-09-18 | 2015-01-28 | 宁波市荣科迈特数控刀具有限公司 | Side fixed type shovel drill |
| CN105377478A (en) * | 2013-07-05 | 2016-03-02 | 山特维克知识产权股份有限公司 | Method and device for manufacturing cutting insert green body |
| CN106222511A (en) * | 2016-08-22 | 2016-12-14 | 合肥东方节能科技股份有限公司 | A kind of method of sintering cemented carbide molding guide wheel based on high-energy ball milling method |
| CN106312074A (en) * | 2016-08-25 | 2017-01-11 | 苏州赛特锐精密机械配件有限公司 | Preparation method for superfine hard alloy cutter blank with preformed cutter groove |
| CN108059460A (en) * | 2017-12-04 | 2018-05-22 | 株洲夏普高新材料有限公司 | Hard alloy suitable for water knife sandpipe and preparation method thereof |
| CN109972017A (en) * | 2019-04-24 | 2019-07-05 | 上海大学 | High-speed cutting sintered carbide tool material and hard alloy cutter manufacturing method |
| CN114250396A (en) * | 2021-11-19 | 2022-03-29 | 成都美奢锐新材料有限公司 | Superfine low-cobalt hard alloy material for wood processing and preparation method thereof |
-
2011
- 2011-10-14 CN CN2011103105961A patent/CN102357657A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102990303A (en) * | 2012-12-03 | 2013-03-27 | 浙江东钨实业有限公司 | Manufacturing method of hard alloy special-shaped product |
| CN105377478B (en) * | 2013-07-05 | 2019-07-26 | 山特维克知识产权股份有限公司 | Method and apparatus for manufacturing cutting tip green compact |
| CN105377478A (en) * | 2013-07-05 | 2016-03-02 | 山特维克知识产权股份有限公司 | Method and device for manufacturing cutting insert green body |
| CN103785839A (en) * | 2014-01-16 | 2014-05-14 | 龙岩市棱利工贸有限公司 | Forming method of hard alloy spiral blade |
| CN103911536A (en) * | 2014-04-02 | 2014-07-09 | 成都工具研究所有限公司 | Cr containing high-grade steel hard alloy cutter material for petroleum pipeline thread machining |
| CN103911536B (en) * | 2014-04-02 | 2016-03-16 | 成都工具研究所有限公司 | Containing Cr high-steel level oil gas thread sintered carbide tool material for processing |
| CN104308230A (en) * | 2014-09-18 | 2015-01-28 | 宁波市荣科迈特数控刀具有限公司 | Side fixed type shovel drill |
| CN106222511A (en) * | 2016-08-22 | 2016-12-14 | 合肥东方节能科技股份有限公司 | A kind of method of sintering cemented carbide molding guide wheel based on high-energy ball milling method |
| CN106312074B (en) * | 2016-08-25 | 2018-02-02 | 苏州赛特锐精密机械配件有限公司 | A kind of preparation method of the preforming cutter groove solid tool base substrate of ultra-fine cemented carbide |
| CN106312074A (en) * | 2016-08-25 | 2017-01-11 | 苏州赛特锐精密机械配件有限公司 | Preparation method for superfine hard alloy cutter blank with preformed cutter groove |
| CN108059460A (en) * | 2017-12-04 | 2018-05-22 | 株洲夏普高新材料有限公司 | Hard alloy suitable for water knife sandpipe and preparation method thereof |
| CN109972017A (en) * | 2019-04-24 | 2019-07-05 | 上海大学 | High-speed cutting sintered carbide tool material and hard alloy cutter manufacturing method |
| CN114250396A (en) * | 2021-11-19 | 2022-03-29 | 成都美奢锐新材料有限公司 | Superfine low-cobalt hard alloy material for wood processing and preparation method thereof |
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Application publication date: 20120222 |