CN102974818A - Formula and manufacturing method for special diamond tool bit - Google Patents
Formula and manufacturing method for special diamond tool bit Download PDFInfo
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- CN102974818A CN102974818A CN201210553393XA CN201210553393A CN102974818A CN 102974818 A CN102974818 A CN 102974818A CN 201210553393X A CN201210553393X A CN 201210553393XA CN 201210553393 A CN201210553393 A CN 201210553393A CN 102974818 A CN102974818 A CN 102974818A
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Abstract
The invention discloses a formula and a manufacturing method for a special diamond tool bit. The manufacturing method is characterized by comprising the following steps: recovering rough cobalt powder of 250-300 meshes to be in a loose state; carrying out titanium plating treatment on a diamond; heating 80-85% of the diamond and 20-15% of titanium powder to 780-800 DEG C under the vacuum conditions for reaction, wherein the treated titanium-plated diamond contains 99.7-99.8% of the diamond and 0.2-0.3% of the titanium powder; uniformly mixing 8-10% of the titanium-plated diamond with 92-90% of the cobalt powder; fully stirring and mixing for 30-45 min by a three-dimensional mixing machine; pressing under a pressure of 80-100 KN at the normal temperature; and hotly pressing and forming by a vacuum hot pressing sintering machine, wherein the highest hot pressing temperature is 820 DEG C, the maximum pressure is 200 KN, and the heat preservation and pressure maintenance time is 1-3 min. Through experimental detection, the Vickers hardness of the tool bit reaches 95-98 and the bending resistance of a matrix is 1211.9 MPa. The holding force of the matrix on the diamond is remarkably larger than that of the conventional single-metal powder or multi-metal mixed powder matrix on the diamond, the utilization rate of the diamond is effectively increased, and the sharpness and the wear resistance of a diamond tool are effectively improved.
Description
Technical field
The invention belongs to the cutting-tool engineering field, relate to diamond tool bit prescription and production technology in the powder metallurgy, particularly a kind of extraordinary diamond tool bit prescription and preparation method.
Background technology
Existing diamond tool cutter tooth prescription kind is tired many, substantially is divided into: ceramic-like diamond tool, stone materials diamond tool, concrete DLC instrument.Existing diamond tool bit prescription mainly adopts the mixing of multiple elemental metals powder, as, copper powder, iron powder, glass putty, nickel powder, zinc powder, tungsten carbide powder, chromium powder, titanium valve, or adopt prealloy powder such as copper-iron alloy, ormolu mixes with the elemental metals powder.Adding diamond after mixing stirs, put into pressing sintering, be shaped by HTHP, the diamond segment of producing, owing to be difficult to after each metal powder is unmixed realize mixing fully fully, add that mixed metal powder sintering range is narrower and the alloy carcass is higher to the uniformity requirement of sintering temperature, existing pressing sintering is difficult to realize allowing a framed alloy cutter head be heated evenly, it is inadequate to the adamantine strength of controlling to add alloy powder, cause the diamond tool bit drilling not sharp, and not wear-resisting.Such as CN200920102324.0, a kind of diamond tool bit is disclosed, comprise the transition zone that is connected with matrix and the cutwork layer that is formed by the mixed powder sintering that diamond and metal powder are made, transition zone by steel especially medium and low carbon steel material and in, low-carbon alloy steel materials processing forms.Laminated devices such as 201120202837.6 of inventor invention, a kind of multi-layer cutter head of diamond tool is disclosed, comprise body piles more than three layers or three layers, and the diamond solubility of described body piles from both sides to the centre weakens gradually.Multi-layer cutter head of diamond tool of the present invention can not form round mouth in the process of cutting, but forms matrix or remain the plane, reduces the cutting area thereby reach, and improves diamond tool cutting speed and the effect in service life.Therefore prior art is still waiting perfect.
Summary of the invention
The present invention adopts a kind of elemental metals cobalt powder, and diamond surface is plated titanium valve, forms the high quality diamond tool insert by hot pressed sintering, thereby a kind of extraordinary diamond tool bit prescription and preparation method are provided.Effective Raise diamond segment carcass reaches the effect that improves diamond tool sharpness and abrasion resistance to adamantine hold.
One of design of the present invention is:
A kind of extraordinary diamond tool bit prescription is comprised of the material of following percentage by weight: titanium-gold-plating hard rock 8-10%, and cobalt powder 92-90%, wherein diamond accounts for 99.7-99.8% in the titanium-gold-plating hard rock, and titanium valve accounts for 0.2-0.3%.
Two of design of the present invention is:
A kind of preparation method of extraordinary diamond tool bit
The first step is placed on the interior mix and blend of three-dimensional material mixer 25-35 minutes together to the thick cobalt powder of 250-300 purposes and small ball, allows cobalt powder recover vacuum-packed front loose condition (of surface);
Second step carries out titanizing to diamond to be processed; Diamond is pressed 80-85%, and titanium valve is pressed 20-15%, is warmed to the 780-800 degree and reacts under vacuum condition, and diamond accounts for 99.7-99.8% in the titanium-gold-plating hard rock after the processing, and titanium valve accounts for 0.2-0.3%;
The 3rd step is titanium-gold-plating hard rock and pure cobalt powder by weight: the titanium-gold-plating hard rock accounts for 8-10%, and cobalt powder accounts for 92-90% evenly to be mixed;
The 4th step fully mixed 30-45 minute to the titanium-gold-plating hard rock and the cobalt powder that add with three-dimensional material mixer;
The 5th step is the material cold press cold-press moulding that mixes; Cold pressing at normal temperatures, use the pressure of 80-100KN to suppress;
The 6th step advanced well on chip packaged of colding pressing in the swage frame, then used the vacuum heating-press sintering machine, carried out hot forming; The hot pressing maximum temperature is 820 degree, maximum pressure 200KN, heat-insulation pressure keeping 1-3 minute;
The 7th step was carried out surface sand-blasting processing place packing to the cutter head of hot forming;
Described percentage is weight percentage.
Because metal cobalt powder has good parcel effect to diamond, add diamond surface is plated titanium valve, metallic cobalt and Titanium can form alloy in the hot pressed sintering process, Effective Raise cobalt-based carcass is to adamantine parcel effect, owing to adopt the elemental metals cobalt powder, effectively solve the unmixed non-uniform phenomenon of various metal powders, the sintering temperature of cobalt powder is more wide in range than alloyed powder sintering temperature in addition, has greatly improved the stability of product quality in the production process.
The present invention emphasizes that diamond will carry out titanizing and process, and uses the vacuum heating-press sintering machine of 80KW, under the temperature of 820 degree, with the pressure of 200KN, to pure cobalt powder carcass heat-insulation pressure keeping sintering 2 minutes.Since cobalt be in the metal with one of best metal of carbon compatibility, cobalt liquor is that the 50-70 degree can wetting diamond and graphite to the angle of wetting of carbon, cobalt is higher more than 10 times than copper with adamantine Work of Adhesion, so cobalt is one of best carcass material of bond diamond.
The present invention's effect simple to operate is remarkable, the inventor carried out repeatedly experiment to tens kinds of metal powders, ratio collocation between hundreds of different metal powder, found that pure cobalt powder is effective to adamantine parcel, the diamond segment of this pure cobalt powder carcass production detects its Ruo Shi hardness through experiment and reaches 95-98, the carcass bending resistance is 1211.9MPa. to adamantine hold apparently higher than traditional elemental metals powder or various metals mixing powder carcass to adamantine hold, the adamantine utilization rate of Effective Raise has improved sharpness and the abrasion resistance of diamond tool.
Description of drawings
Fig. 1 is the process chart of the embodiment of the invention 1.
The specific embodiment
The present invention is by the following examples can the invention will be further described, yet scope of the present invention is not limited to following embodiment.
Embodiment 1
The first step is placed on the interior mix and blend of three-dimensional material mixer 30 minutes together to the thick cobalt powder of 300 purposes and small ball, allows cobalt powder recover vacuum-packed front loose condition (of surface);
Second step carries out titanizing to diamond to be processed; By 85%, titanium valve is warmed to 800 degree and reacts by 15% under vacuum condition diamond, and diamond accounts for 99.7% in the titanium-gold-plating hard rock after the processing, and titanium valve accounts for 0.3%;
The 3rd step is titanium-gold-plating hard rock and pure cobalt powder by weight: the titanium-gold-plating hard rock accounts for 10%, and cobalt powder accounts for 90% evenly mixing;
The 4th step fully mixed 30 minutes to the titanium-gold-plating hard rock and the cobalt powder that add with three-dimensional material mixer;
The 5th step is the material cold press cold-press moulding that mixes; Cold pressing at normal temperatures, use the pressure of 100KN to suppress;
The 6th step advanced well on chip packaged of colding pressing in the swage frame, then used the vacuum heating-press sintering machine, carried out hot forming; The hot pressing maximum temperature is 820 degree, maximum pressure 200KN, heat-insulation pressure keeping 1 minute;
The 7th step was carried out surface sand-blasting processing place packing to the cutter head of hot forming.
Embodiment 2
The first step is placed on the interior mix and blend of three-dimensional material mixer 35 minutes together to the thick cobalt powder of 250 purposes and small ball, allows cobalt powder recover vacuum-packed front loose condition (of surface);
Second step carries out titanizing to diamond to be processed; By 80%, titanium valve is warmed to 780 degree and reacts by 20% under vacuum condition diamond, and diamond accounts for 99.8% in the titanium-gold-plating hard rock after the processing, and titanium valve accounts for 0.2%;
The 3rd step is titanium-gold-plating hard rock and pure cobalt powder by weight: the titanium-gold-plating hard rock accounts for 8%, and cobalt powder accounts for 92% evenly mixing;
The 4th step fully mixed 45 minutes to the titanium-gold-plating hard rock and the cobalt powder that add with three-dimensional material mixer;
The 5th step is the material cold press cold-press moulding that mixes; Cold pressing at normal temperatures, use the pressure of 80KN to suppress;
The 6th step advanced well on chip packaged of colding pressing in the swage frame, then used the vacuum heating-press sintering machine, carried out hot forming; The hot pressing maximum temperature is 820 degree, maximum pressure 200KN, heat-insulation pressure keeping 3 minutes;
The 7th step was carried out surface sand-blasting processing place packing to the cutter head of hot forming.
Claims (2)
1. extraordinary diamond tool bit prescription is characterized in that the material of filling a prescription by following percentage by weight forms: titanium-gold-plating hard rock 8-10%, and cobalt powder 92-90%, wherein diamond accounts for 99.7-99.8% in the titanium-gold-plating hard rock, and titanium valve accounts for 0.2-0.3%.
2. the preparation method of an extraordinary diamond tool bit is characterized in that the preparation method is as follows:
The first step is placed on the interior mix and blend of three-dimensional material mixer 25-35 minutes together to the thick cobalt powder of 250-300 purposes and small ball, allows cobalt powder recover vacuum-packed front loose condition (of surface);
Second step carries out titanizing to diamond to be processed; Diamond is pressed 80-85%, and titanium valve is pressed 20-15%, is warmed to the 780-800 degree and reacts under vacuum condition, and diamond accounts for 99.7-99.8% in the titanium-gold-plating hard rock after the processing, and titanium valve accounts for 0.2-0.3%;
The 3rd step is titanium-gold-plating hard rock and pure cobalt powder by weight: the titanium-gold-plating hard rock accounts for 8-10%, and cobalt powder accounts for 92-90% evenly to be mixed;
The 4th step fully mixed 30-45 minute to the titanium-gold-plating hard rock and the cobalt powder that add with three-dimensional material mixer;
The 5th step is the material cold press cold-press moulding that mixes; Cold pressing at normal temperatures, use the pressure of 80-100KN to suppress;
The 6th step advanced well on chip packaged of colding pressing in the swage frame, then used the vacuum heating-press sintering machine, carried out hot forming; The hot pressing maximum temperature is 820 degree, maximum pressure 200KN, heat-insulation pressure keeping 1-3 minute;
The 7th step was carried out surface sand-blasting processing place packing to the cutter head of hot forming;
Described percentage is weight percentage.
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| CN201210553393.XA CN102974818B (en) | 2012-12-19 | 2012-12-19 | Formula and manufacturing method for special diamond tool bit |
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| CN201210553393.XA CN102974818B (en) | 2012-12-19 | 2012-12-19 | Formula and manufacturing method for special diamond tool bit |
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| CN102974818B CN102974818B (en) | 2015-01-28 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104148642A (en) * | 2014-07-24 | 2014-11-19 | 华侨大学 | Ultra-thin diamond saw blade made of rare-earth modified tungsten-base binding agent and manufacturing method of ultra-thin diamond saw blade |
| CN104148652A (en) * | 2014-08-11 | 2014-11-19 | 泉州众志金刚石工具有限公司 | Preparation method of novel diamond blocks and body materials used in preparation method |
| CN104988345A (en) * | 2015-07-01 | 2015-10-21 | 重庆电子工程职业学院 | Tool processing technology |
| CN106799488A (en) * | 2016-12-23 | 2017-06-06 | 南安市铭基金刚石工具有限公司 | Diamond saw blade and diamond saw blade and preparation method thereof |
| CN108097972A (en) * | 2017-12-28 | 2018-06-01 | 福建省泉州市华钻金刚石工具有限公司 | A kind of preparation method of metallic bond cutter head and the diamond disc with the metallic bond cutter head |
| CN115194156A (en) * | 2022-07-29 | 2022-10-18 | 鄂信钻石新材料股份有限公司 | Improved diamond alloy tool bit and preparation process thereof |
| CN115430831A (en) * | 2022-08-08 | 2022-12-06 | 泉州众志金刚石工具有限公司 | Matrix powder for diamond tool bit, preparation method and diamond tool bit |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104148642A (en) * | 2014-07-24 | 2014-11-19 | 华侨大学 | Ultra-thin diamond saw blade made of rare-earth modified tungsten-base binding agent and manufacturing method of ultra-thin diamond saw blade |
| CN104148652A (en) * | 2014-08-11 | 2014-11-19 | 泉州众志金刚石工具有限公司 | Preparation method of novel diamond blocks and body materials used in preparation method |
| CN104988345A (en) * | 2015-07-01 | 2015-10-21 | 重庆电子工程职业学院 | Tool processing technology |
| CN106799488A (en) * | 2016-12-23 | 2017-06-06 | 南安市铭基金刚石工具有限公司 | Diamond saw blade and diamond saw blade and preparation method thereof |
| CN106799488B (en) * | 2016-12-23 | 2019-03-12 | 南安市铭基金刚石工具有限公司 | Diamond saw blade and diamond saw blade and preparation method thereof |
| CN108097972A (en) * | 2017-12-28 | 2018-06-01 | 福建省泉州市华钻金刚石工具有限公司 | A kind of preparation method of metallic bond cutter head and the diamond disc with the metallic bond cutter head |
| CN115194156A (en) * | 2022-07-29 | 2022-10-18 | 鄂信钻石新材料股份有限公司 | Improved diamond alloy tool bit and preparation process thereof |
| CN115430831A (en) * | 2022-08-08 | 2022-12-06 | 泉州众志金刚石工具有限公司 | Matrix powder for diamond tool bit, preparation method and diamond tool bit |
| CN115430831B (en) * | 2022-08-08 | 2023-10-24 | 泉州众志金刚石工具有限公司 | Diamond tool bit and preparation method thereof |
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| CN102974818B (en) | 2015-01-28 |
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