CN105039766A - Cemented carbide for cutting blade and preparation method for cemented carbide - Google Patents
Cemented carbide for cutting blade and preparation method for cemented carbide Download PDFInfo
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- CN105039766A CN105039766A CN201510473145.8A CN201510473145A CN105039766A CN 105039766 A CN105039766 A CN 105039766A CN 201510473145 A CN201510473145 A CN 201510473145A CN 105039766 A CN105039766 A CN 105039766A
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Abstract
The invention discloses cemented carbide for a cutting blade and a preparation method for the cemented carbide. Tungsten carbide powder and metal cobalt powder are mixed, subjected to wet milling, dried, shaped and then pressed into an ultrathin cemented carbide blank which is 0.5mm thick. An electromagnet punch is used for absorbing the ultrathin cemented carbide blank upwards and putting the ultrathin cemented carbide blank into a graphite boat for pre-sintering, and sintering is carried out finally, so that the cemented carbide is obtained. By means of the technical scheme, a finished cemented carbide product which is concentrated in crystallization degree, free of internal defects and thinner than 0.5 mm is directly prepared. Waste of the cemented carbide is effectively reduced in the process of manufacturing the cutting blade from the cemented carbide. Precious tungsten resources are saved.
Description
Technical field
The present invention relates to Wimet field, particularly relate to a kind of cutting tip Wimet and preparation method thereof.
Background technology
Wimet has the features such as high strength, high rigidity, high elastic coefficient, wear-resistant, corrosion-resistant, low-expansion coefficient and high chemical stability, is described as " tooth of industry " and is widely used in the aspects such as mining, machining.Carry out wet-milling, compacting after traditional Wimet is generally good by preparation of raw material, then sinter defect wherein, this method can sinter out the hard metal tip of thickness at about 0.5mm.But in the process of practical application, often only have 0.3mm even thinner as glasses bite, microelectronics bite etc., need hard metal tip to process further grinding during preparation, this just causes the huge wasting of resources again.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art, the object of the present invention is to provide a kind of cutting tip Wimet and preparation method thereof, be intended to solve prior art and can only prepare the Wimet that thickness is more than 0.5mm, the problem of serious waste of resources in carbide cutting blade making processes.
Technical scheme of the present invention is as follows:
A preparation method for cutting tip Wimet, wherein, comprises step:
A, by tungsten-carbide powder and metal cobalt powder in 92:(8 ~ 12) ratio mixing after, add abrasive and carry out grinding 48 ~ 96 hours, then by the compound drying after grinding 2 ~ 4 hours, and be cooled to room temperature;
B, cooled compound to be sieved, then in the ratio of every Kg compound corresponding 90-100mL forming agent compound mixed with forming agent and stir, carrying out after stirring drying and sieving, obtain bed material to be pressed;
C, bed material to be pressed is joined in mould, then bed material is pressed into the hard alloy blank that thickness is 0.5mm, and pick up hard alloy blank with electro-magnet drift and put into graphite boat, after the homogeneous temperature of graphite boat is warming up to 750 ~ 850 DEG C, be incubated 0.8 ~ 1.2 hour;
D, the hard alloy blank obtained by step C are put into vacuum sintering furnace in the lump together with graphite boat and are carried out procedural intensification sintering, obtained Wimet.
The preparation method of described cutting tip Wimet, wherein, in described steps A, described abrasive is ethanol solution,
The preparation method of described cutting tip Wimet, wherein, the addition of described abrasive is 200 ~ 300mL/Kg compound.
The preparation method of described cutting tip Wimet, wherein, in described step B, adopts 80 object screen clothes to sieve.
The preparation method of described cutting tip Wimet, wherein, in described step B, described forming agent is 2C, SG or SBSA.
The preparation method of described cutting tip Wimet, wherein, in described step C, suppresses bed material with 100 ton of four post oil press.
The preparation method of described cutting tip Wimet, wherein, in described step C, after the homogeneous temperature of graphite boat is warming up to 800 DEG C, is incubated 1 hour.
The preparation method of described cutting tip Wimet, wherein, in described step C, with V-shaped groove on described graphite boat.
The preparation method of described cutting tip Wimet, wherein, in described step D, described procedural intensification comprises: first with 360 minutes, homogeneous temperature in vacuum sintering furnace is warming up to 800 DEG C, then be evenly warming up to 1150 DEG C with 90 minutes, be more evenly warming up to 1300 DEG C with 120 minutes, be incubated after 60 minutes, evenly be warming up to 1400 DEG C with 60 minutes, be incubated power failure cooling after 60 minutes.
A kind of cutting tip Wimet, wherein, adopts the preparation method of as above arbitrary described cutting tip Wimet to be prepared from.
Beneficial effect: the present invention is by by wet-milling after tungsten-carbide powder and metal cobalt powder mixing, drying shaping, then the ultra-thin hard alloy blank of 0.5mm is pressed into, pick up to put in graphite boat with electro-magnet drift and carry out pre-burning, finally sinter, can obtain brilliant degree to concentrate, inner zero defect, and thickness is less than the Wimet of 0.5mm, thus effectively reduce the waste of the material of Wimet in carbide cutting blade making processes, save valuable tungsten resource.
Embodiment
The invention provides a kind of cutting tip Wimet and preparation method thereof, for making object of the present invention, technical scheme and effect clearly, clearly, the present invention is described in more detail below.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The present invention discloses a kind of preparation method of cutting tip Wimet, and it comprises step:
A, by tungsten-carbide powder and metal cobalt powder in 92:(8 ~ 12) ratio mixing after, add abrasive and carry out grinding 48 ~ 96 hours, then by the compound drying after grinding 2 ~ 4 hours, and be cooled to room temperature;
B, cooled compound to be sieved, then in the ratio of every Kg compound corresponding 90-100mL forming agent compound mixed with forming agent and stir, carrying out after stirring drying and sieving, obtain bed material to be pressed;
C, bed material to be pressed is joined in mould, then bed material is pressed into the hard alloy blank that thickness is 0.5mm, and pick up hard alloy blank with electro-magnet drift and put into graphite boat, after the homogeneous temperature of graphite boat is warming up to 750 ~ 850 DEG C, be incubated 0.8 ~ 1.2 hour;
D, the hard alloy blank obtained by step C are put into vacuum sintering furnace in the lump together with graphite boat and are carried out procedural intensification sintering, obtained Wimet.
The present invention, by by wet-milling after tungsten-carbide powder and metal cobalt powder mixing, drying shaping, is then pressed into the ultra-thin hard alloy blank of 0.5mm, picks up to put in graphite boat and carry out pre-burning, finally sinter with electro-magnet drift, obtain Wimet.The present invention adopts technique scheme, picked up by the ultra-thin hard alloy blank of electro-magnet drift by the 0.5mm be directly compressed into, then put into graphite boat and carry out pre-burning, carry out procedural sintering again, can obtain brilliant degree to concentrate, inner zero defect, and thickness is less than the hard alloy finished product of 0.5mm, thus effectively reduce the waste of the material of Wimet in carbide cutting blade making processes, save valuable tungsten resource.
Described steps A is specially, by tungsten-carbide powder and metal cobalt powder in 92:(8 ~ 12) ratio mixing after, be poured in mixer grinder, add abrasive and carry out agitation grinding 48 ~ 96 hours, then poured out by the compound after grinding, transfer in bitubular vibration drier after precipitation, dry 2 ~ 4 hours (such as, dry 3 hours), and be cooled to room temperature.Preferably, in described steps A, described abrasive is ethanol solution, and the addition of described abrasive is 200 ~ 300mL/Kg compound.
Described step B is specially, 80 object screen clothes are adopted by cooled compound to sieve, then by the ratio of every Kg compound corresponding 90-100mL forming agent (such as, forming agent is 2C, SG or SBSA), compound is mixed with forming agent, be added in agitator after mixing and stir, put into drying cupboard, adjustment temperature 110 ~ 130 DEG C (such as, adjustment temperature 120 DEG C), then dries 120 ~ 240 minutes, finally sieve, bed material obtained to be pressed.
Described step C is specially, bed material to be pressed is joined in mould, with 100 ton of four post oil press, bed material is carried out being pressed into ultra-thin hard alloy blank, and pick up ultra-thin hard alloy blank with electro-magnet drift, put into reposefully in graphite boat, after the temperature of graphite boat was evenly warming up to 750 ~ 850 DEG C in 5 hours, be incubated 0.8 ~ 1.2 hour (such as, after being evenly warming up to 800 DEG C, be incubated 1 hour).The present invention, by ultra-thin Wimet thick for the 0.5mm that is directly compressed into, adopts electro-magnet drift to be picked up, puts into reposefully in graphite boat and carry out pre-burning, make ultra-thin mushy hard alloy blank can reach certain intensity, be unlikely distortion.
Preferably, in described step C, with V-shaped groove on described graphite boat, thus can distortion in the control product sintering process of maximum restriction.
Described step D is specially, and the hard alloy blank obtained by step C is put into vacuum sintering furnace in the lump together with graphite boat and carried out procedural intensification sintering, obtained Wimet.Wherein, described procedural intensification comprises: first with 360 minutes, homogeneous temperature in vacuum sintering furnace is warming up to 800 DEG C, then 1150 DEG C were evenly warming up to 90 minutes, 1300 DEG C are evenly warming up to again with 120 minutes, be incubated after 60 minutes, evenly be warming up to 1400 DEG C with 60 minutes, be incubated power failure cooling after 60 minutes.The present invention adopts said procedure to heat up and sinters, and effectively can revise Wimet crystalline substance degree uneven, there is the defects such as hole, the product crystalline substance degree obtained is concentrated, inner zero defect, and thickness is less than 0.5mm, greatly save the starting material of Wimet, decrease the waste of tungsten resource.
Based on aforesaid method, the present invention also provides a kind of cutting tip Wimet, and it adopts the preparation method of as above arbitrary described cutting tip Wimet to be prepared from.The Wimet crystalline substance degree be prepared into by the inventive method is concentrated, inner zero defect, and thickness is less than 0.5mm, effectively reduces the waste of the material of Wimet in carbide cutting blade making processes, saves valuable tungsten resource.
Below by specific embodiment, the present invention is described in detail.
Embodiment 1
Accurately take tungsten-carbide powder 920g and metal cobalt powder 80g is poured in agitating ball mill, add 300mL dehydrated alcohol, start shredder and carry out grinding 48 hours;
Slip in shredder is poured out, precipitates and throw out is transferred in bitubular vibration drier after 200 minutes, regulate temperature 120 DEG C, dry 2 hours, be cooled to room temperature;
Cooled for drying compound is sieved by 80 object screen clothes, screen out particle diameter and be greater than 80 object material grains, remaining compound is poured in agitator, add 100mLSBSA, stir, put into drying cupboard, adjustment temperature is 120 DEG C, dry 2 hours, be then screened to 80 orders, bed material obtained to be pressed;
Bed material to be pressed is joined in mould, with 100 ton of four post oil press, bed material is pressed into the ultra-thin blank of the thick hard of 0.5mm; Picked up with electro-magnet drift, put on the graphite boat with V-shaped groove reposefully; The temperature of graphite boat is evenly warming up to 800 DEG C in 5 hours, is incubated 1 hour;
Ultra-thin hard alloy blank is put into vacuum sintering furnace in the lump together with graphite boat, first 360 minutes by in-furnace temperature homogeneous heating to 800 DEG C, then 1150 DEG C were evenly warming up to 90 minutes, 1300 DEG C are evenly warming up to 120 minutes, be incubated after 60 minutes, evenly be warming up to 1400 DEG C with 60 minutes, be incubated power failure cooling after 60 minutes, the obtained ultra-thin Wimet of 0.98Kg.
Embodiment 2
Accurately take tungsten-carbide powder 184Kg and metal cobalt powder 20Kg is poured in mixer grinder, add 40L dehydrated alcohol, start shredder and carry out grinding 96 hours;
Compound in shredder is poured out, precipitates and throw out is transferred in bitubular vibration drier after 300 minutes, regulate temperature 120 DEG C, dry 3 hours, be cooled to room temperature;
Cooled for drying compound is sieved by 80 object screen clothes, screen out particle diameter and be greater than 80 object material grains, remaining compound is poured in agitator, add 180mLSG, stir, put into drying cupboard, adjustment temperature is 120 DEG C, drying 240 minutes, after being sieved to 80 orders, obtaining bed material to be pressed;
Bed material to be pressed is joined in mould, with 100 ton of four post oil press, bed material is pressed into the thick ultra-thin hard alloy blank of 0.5mm; Picked up with electro-magnet drift, put on the graphite boat with V-shaped groove reposefully; The temperature of graphite boat is evenly warming up to 800 DEG C in 5 hours, is incubated 1 hour;
Ultra-thin hard alloy blank is put into vacuum sintering furnace in the lump together with graphite boat, with 360 minutes by in-furnace temperature homogeneous heating to 800 DEG C, then 1150 DEG C were evenly warming up to 90 minutes, 1300 DEG C are evenly warming up to again with 120 minutes, be incubated after 60 minutes, evenly be warming up to 1400 DEG C with 60 minutes, be incubated power failure cooling after 60 minutes, the obtained ultra-thin Wimet of 1.99Kg.
Embodiment 3
Accurately take tungsten-carbide powder 358Kg and metal cobalt powder 48Kg is poured in mixer grinder, add 104L dehydrated alcohol, start shredder and carry out grinding 70 hours;
Compound in shredder is poured out, precipitates and throw out is transferred in bitubular vibration drier after 250 minutes, regulate temperature 120 DEG C, dry 4 hours, be cooled to room temperature;
Cooled for drying compound is sieved by 80 object screen clothes, screen out particle diameter and be greater than 80 object material grains, remaining compound is poured in agitator, add 180mLSBSA, stir, put into drying cupboard, adjustment temperature is 130 DEG C, drying 200 minutes, after being sieved to 80 orders, obtaining bed material to be pressed;
Bed material to be pressed is joined in mould, with 100 ton of four post oil press, bed material is pressed into the thick ultra-thin hard alloy blank of 0.5mm; Picked up with electro-magnet drift, put on the graphite boat with V-shaped groove reposefully; The temperature of graphite boat is evenly warming up to 850 DEG C in 5 hours, is incubated 1 hour;
Ultra-thin hard alloy blank is put into vacuum sintering furnace in the lump together with graphite boat, with 360 minutes by in-furnace temperature homogeneous heating to 800 DEG C, then 1150 DEG C were evenly warming up to 90 minutes, 1300 DEG C are evenly warming up to again with 120 minutes, be incubated after 60 minutes, evenly be warming up to 1400 DEG C with 60 minutes, be incubated power failure cooling after 60 minutes, the obtained ultra-thin Wimet of 1.99Kg.
In sum, a kind of cutting tip Wimet provided by the invention and preparation method thereof, the present invention is by by wet-milling after tungsten-carbide powder and metal cobalt powder mixing, drying shaping, then the ultra-thin blank of Wimet of 0.5mm is pressed into, employing electro-magnet drift picks up to put in graphite boat and carries out pre-burning, finally sinters.By aforesaid method, the present invention directly can obtain brilliant degree and concentrate, inner zero defect, and thickness is less than the hard alloy finished product of 0.5mm, effectively reduces the waste of the material of Wimet in carbide cutting blade making processes, saves valuable tungsten resource.
Should be understood that, application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to claims of the present invention.
Claims (10)
1. a preparation method for cutting tip Wimet, is characterized in that, comprises step:
A, by tungsten-carbide powder and metal cobalt powder in 92:(8 ~ 12) ratio mixing after, add abrasive and carry out grinding 48 ~ 96 hours, then by the compound drying after grinding 2 ~ 4 hours, and be cooled to room temperature;
B, cooled compound to be sieved, then in the ratio of every Kg compound corresponding 90-100mL forming agent compound mixed with forming agent and stir, carrying out after stirring drying and sieving, obtain bed material to be pressed;
C, bed material to be pressed is joined in mould, then bed material is pressed into the hard alloy blank that thickness is 0.5mm, and pick up hard alloy blank with electro-magnet drift and put into graphite boat, after the homogeneous temperature of graphite boat is warming up to 750 ~ 850 DEG C, be incubated 0.8 ~ 1.2 hour;
D, the hard alloy blank obtained by step C are put into vacuum sintering furnace in the lump together with graphite boat and are carried out procedural intensification sintering, obtained Wimet.
2. the preparation method of cutting tip Wimet according to claim 1, is characterized in that, in described steps A, described abrasive is ethanol solution.
3. the preparation method of cutting tip Wimet according to claim 2, is characterized in that, the addition of described abrasive is 200 ~ 300mL/Kg compound.
4. the preparation method of cutting tip Wimet according to claim 1, is characterized in that, in described step B, adopts 80 object screen clothes to sieve.
5. the preparation method of cutting tip Wimet according to claim 1, is characterized in that, in described step B, described forming agent is 2C, SG or SBSA.
6. the preparation method of cutting tip Wimet according to claim 1, is characterized in that, in described step C, is suppressed by bed material with 100 ton of four post oil press.
7. the preparation method of cutting tip Wimet according to claim 1, is characterized in that, in described step C, after the homogeneous temperature of graphite boat is warming up to 800 DEG C, is incubated 1 hour.
8. the preparation method of cutting tip Wimet according to claim 1, is characterized in that, in described step C, with V-shaped groove on described graphite boat.
9. the preparation method of cutting tip Wimet according to claim 1, it is characterized in that, in described step D, described procedural intensification comprises: first with 360 minutes, homogeneous temperature in vacuum sintering furnace is warming up to 800 DEG C, then be evenly warming up to 1150 DEG C with 90 minutes, be more evenly warming up to 1300 DEG C with 120 minutes, be incubated after 60 minutes, evenly be warming up to 1400 DEG C with 60 minutes, be incubated power failure cooling after 60 minutes.
10. a cutting tip Wimet, is characterized in that, adopt as arbitrary in claim 1 ~ 9 as described in the preparation method of cutting tip Wimet be prepared from.
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| CN109158718A (en) * | 2018-11-08 | 2019-01-08 | 上海江南轧辊有限公司 | Preparation method, the preparation method of tool-electrode and tool-electrode of electrode tip |
| CN109821652A (en) * | 2018-09-28 | 2019-05-31 | 甘肃虹光电子有限责任公司 | A kind of cathode tungsten powder classification and sorting processing method |
| CN114309614A (en) * | 2021-12-28 | 2022-04-12 | 乐清市跃宇合金材料有限公司 | Preparation method of alloy blade for step lock hole drilling |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109821652A (en) * | 2018-09-28 | 2019-05-31 | 甘肃虹光电子有限责任公司 | A kind of cathode tungsten powder classification and sorting processing method |
| CN109821652B (en) * | 2018-09-28 | 2021-07-09 | 甘肃虹光电子有限责任公司 | Cathode tungsten powder grading and sorting treatment method |
| CN109158718A (en) * | 2018-11-08 | 2019-01-08 | 上海江南轧辊有限公司 | Preparation method, the preparation method of tool-electrode and tool-electrode of electrode tip |
| CN114309614A (en) * | 2021-12-28 | 2022-04-12 | 乐清市跃宇合金材料有限公司 | Preparation method of alloy blade for step lock hole drilling |
| CN114309614B (en) * | 2021-12-28 | 2023-12-22 | 乐清市跃宇合金材料有限公司 | Preparation method of alloy blade for step keyhole drill |
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