CN102974818B - 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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- CN102974818B CN102974818B CN201210553393.XA CN201210553393A CN102974818B CN 102974818 B CN102974818 B CN 102974818B CN 201210553393 A CN201210553393 A CN 201210553393A CN 102974818 B CN102974818 B CN 102974818B
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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 cutting-tool engineering field, relate to the diamond tool bit formula and processing technology in powder metallurgy, particularly the extraordinary diamond tool bit formula of one and preparation method.
Background technology
Existing diamond tool bit formula is of a great variety, is substantially divided into: ceramic-like diamond tool, stone materials diamond tool, concrete DLC instrument.Existing diamond tool bit formula mainly adopts the mixing of multiple elemental metals powder, e.g., copper powder, iron powder, glass putty, nickel powder, zinc powder, tungsten carbide powder, chromium powder, titanium valve, or adopt prealloy powder as copper-iron alloy, ormolu mixes with elemental metals powder.Add diamond after mixing to stir, put into pressing sintering, be shaped by HTHP, the diamond segment produced, due to each metal powder unmixed after be difficult to realize fully mix completely, add that mixed metal powder sintering range is narrower and the uniformity requirement of alloy carcass to sintering temperature is higher, existing pressing sintering is difficult to realize to allow a framed alloy cutter head be heated evenly, add alloy powder inadequate to adamantine holding strength, cause diamond tool bit drilling not sharp, and not wear-resisting.As CN200920102324.0, disclose a kind of diamond tool bit, comprise the cutwork layer that the transition zone be connected with matrix and the mixed powder be made up of diamond and metal powder sinter, transition zone by steel especially medium and low carbon steel material and in, low-carbon alloy steel materials processing forms.Laminated devices as the present inventor invention 201120202837.6, discloses a kind of multi-layer cutter head of diamond tool, comprise more than three layers or three layers body piles, and the diamond solubility of described body piles from both sides to 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 plane, thus reaches minimizing cutting area, improves diamond tool cutting speed and the effect in service life.Therefore prior art need perfect.
Summary of the invention
The present invention adopts a kind of elemental metals cobalt powder, and diamond surface is plated titanium valve, forms high quality diamond tool insert, thus provide a kind of extraordinary diamond tool bit formula and preparation method by hot pressed sintering.Effective raising diamond segment carcass, to adamantine hold, reaches the effect improving diamond tool sharpness and abrasion resistance.
One of design of the present invention is:
A kind of extraordinary diamond tool bit formula, be made up of the material of following percentage by weight: Ti-coated diamond 8-10%, cobalt powder 92-90%, wherein in Ti-coated diamond, diamond accounts for 99.7-99.8%, 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 to be placed in three-dimensional material mixer mix and blend 25-35 minutes the thick cobalt powder of 250-300 object together with small ball, allows cobalt powder recover the loose condition (of surface) before vacuum packaging;
Second step carries out titanizing process diamond; Diamond is pressed 80-85%, and titanium valve presses 20-15%, and be warmed to 780-800 degree under vacuum and react, in the Ti-coated diamond after process, diamond accounts for 99.7-99.8%, and titanium valve accounts for 0.2-0.3%;
3rd step is Ti-coated diamond and pure cobalt powder by weight: Ti-coated diamond accounts for 8-10%, and cobalt powder accounts for 92-90% Homogeneous phase mixing;
4th step three-dimensional material mixer is fully uniformly mixed 30-45 minute the Ti-coated diamond added and cobalt powder;
5th step is the material cold press cold-press moulding mixed; Cold pressing at normal temperatures, use the pressure of 80-100KN to suppress;
6th step colded pressing on chip packaged enter in swage frame, then use vacuum heating-press sintering machine, carry out hot forming; Hot pressing maximum temperature is 820 degree, maximum pressure 200KN, heat-insulation pressure keeping 1-3 minute;
7th step carries out surface sand-blasting process packaging the cutter head of hot forming;
Described percentage is weight percentage.
Well effect is wrapped up because metal cobalt powder has diamond, add and diamond surface is plated titanium valve, in hot pressed sintering process, metallic cobalt and Titanium can form alloy, effective raising cobalt-based carcass is to adamantine parcel effect, owing to adopting elemental metals cobalt powder, the various metal powder of effective solution is unmixed non-uniform phenomenon, the sintering temperature of cobalt powder is more wide in range than alloyed powder sintering temperature in addition, substantially increases the stability of product quality in production process.
The present invention emphasizes that diamond will carry out titanizing process, uses the vacuum heating-press sintering machine of 80KW, at the temperature of 820 degree, with the pressure of 200KN, sinters 2 minutes to pure cobalt powder carcass heat-insulation pressure keeping.Due to one of metal that cobalt is best with carbon compatibility in metal, cobalt liquor is that 50-70 degree can soak diamond and graphite to the angle of wetting of carbon, and cobalt is higher than copper more than 10 times with adamantine Work of Adhesion, so cobalt is one of best carcass material of bond diamond.
The present invention's Be very effective simple to operate, inventor carried out repeatedly testing 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 that this pure cobalt powder carcass is produced detects its Ruo Shi hardness through experiment and reaches 95-98, 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 raising, improve sharpness and the abrasion resistance of diamond tool.
Accompanying drawing explanation
Fig. 1 is the process chart of the embodiment of the present invention 1.
Detailed description of the invention
The present invention is by the following examples can the invention will be further described, but scope of the present invention is not limited to following embodiment.
Embodiment 1
The first step to be placed in three-dimensional material mixer mix and blend 30 minutes the thick cobalt powder of 300 object together with small ball, allows cobalt powder recover the loose condition (of surface) before vacuum packaging;
Second step carries out titanizing process diamond; Diamond by 85%, titanium valve is by 15%, and be warmed to 800 degree under vacuum and react, in the Ti-coated diamond after process, diamond accounts for 99.7%, and titanium valve accounts for 0.3%;
3rd step is Ti-coated diamond and pure cobalt powder by weight: Ti-coated diamond accounts for 10%, and cobalt powder accounts for 90% Homogeneous phase mixing;
4th step three-dimensional material mixer is fully uniformly mixed 30 minutes the Ti-coated diamond added and cobalt powder;
5th step is the material cold press cold-press moulding mixed; Cold pressing at normal temperatures, use the pressure of 100KN to suppress;
6th step colded pressing on chip packaged enter in swage frame, then use vacuum heating-press sintering machine, carry out hot forming; Hot pressing maximum temperature is 820 degree, maximum pressure 200KN, heat-insulation pressure keeping 1 minute;
7th step carries out surface sand-blasting process packaging the cutter head of hot forming.
Embodiment 2
The first step to be placed in three-dimensional material mixer mix and blend 35 minutes the thick cobalt powder of 250 object together with small ball, allows cobalt powder recover the loose condition (of surface) before vacuum packaging;
Second step carries out titanizing process diamond; Diamond by 80%, titanium valve is by 20%, and be warmed to 780 degree under vacuum and react, in the Ti-coated diamond after process, diamond accounts for 99.8%, and titanium valve accounts for 0.2%;
3rd step is Ti-coated diamond and pure cobalt powder by weight: Ti-coated diamond accounts for 8%, and cobalt powder accounts for 92% Homogeneous phase mixing;
4th step three-dimensional material mixer is fully uniformly mixed 45 minutes the Ti-coated diamond added and cobalt powder;
5th step is the material cold press cold-press moulding mixed; Cold pressing at normal temperatures, use the pressure of 80KN to suppress;
6th step colded pressing on chip packaged enter in swage frame, then use vacuum heating-press sintering machine, carry out hot forming; Hot pressing maximum temperature is 820 degree, maximum pressure 200KN, heat-insulation pressure keeping 3 minutes;
7th step carries out surface sand-blasting process packaging the cutter head of hot forming.
Claims (3)
1. the preparation method of an extraordinary diamond tool bit, it is characterized in that described diamond tool bit is made up of the material of following percentage by weight: Ti-coated diamond 8-10%, cobalt powder 92-90%, wherein in Ti-coated diamond, diamond accounts for 99.7-99.8%, and titanium valve accounts for 0.2-0.3%; Preparation method is as follows:
The first step to be placed in three-dimensional material mixer mix and blend 25-35 minutes the thick cobalt powder of 250-300 object together with small ball, allows cobalt powder recover the loose condition (of surface) before vacuum packaging;
Second step carries out titanizing process diamond; Diamond is pressed 80-85%, and titanium valve presses 20-15%, and be warmed to 780-800 degree under vacuum and react, in the Ti-coated diamond after process, diamond accounts for 99.7-99.8%, and titanium valve accounts for 0.2-0.3%;
3rd step is Ti-coated diamond and pure cobalt powder by weight: Ti-coated diamond accounts for 8-10%, and cobalt powder accounts for 92-90% Homogeneous phase mixing;
4th step three-dimensional material mixer is fully uniformly mixed 30-45 minute the Ti-coated diamond added and cobalt powder;
5th step is the material cold press cold-press moulding mixed; Cold pressing at normal temperatures, use the pressure of 80-100KN to suppress;
6th step colded pressing on chip packaged enter in swage frame, then use vacuum heating-press sintering machine, carry out hot forming; Hot pressing maximum temperature is 820 degree, maximum pressure 200KN, heat-insulation pressure keeping 1-3 minute;
7th step carries out surface sand-blasting process packaging the cutter head of hot forming;
Described percentage is weight percentage.
2. the preparation method of a kind of extraordinary diamond tool bit according to claim 1, it is characterized in that preparation method is as follows: the first step to be placed in three-dimensional material mixer mix and blend 30 minutes the thick cobalt powder of 300 object together with small ball, allow cobalt powder recover the loose condition (of surface) before vacuum packaging;
Second step carries out titanizing process diamond; Diamond by 85%, titanium valve is by 15%, and be warmed to 800 degree under vacuum and react, in the Ti-coated diamond after process, diamond accounts for 99.7%, and titanium valve accounts for 0.3%;
3rd step is Ti-coated diamond and pure cobalt powder by weight: Ti-coated diamond accounts for 10%, and cobalt powder accounts for 90% Homogeneous phase mixing;
4th step three-dimensional material mixer is fully uniformly mixed 30 minutes the Ti-coated diamond added and cobalt powder;
5th step is the material cold press cold-press moulding mixed; Cold pressing at normal temperatures, use the pressure of 100KN to suppress;
6th step colded pressing on chip packaged enter in swage frame, then use vacuum heating-press sintering machine, carry out hot forming; Hot pressing maximum temperature is 820 degree, maximum pressure 200KN, heat-insulation pressure keeping 1 minute;
7th step carries out surface sand-blasting process packaging the cutter head of hot forming.
3. the preparation method of a kind of extraordinary diamond tool bit according to claim 1, is characterized in that preparation method is as follows:
The first step to be placed in three-dimensional material mixer mix and blend 35 minutes the thick cobalt powder of 250 object together with small ball, allows cobalt powder recover the loose condition (of surface) before vacuum packaging;
Second step carries out titanizing process diamond; Diamond by 80%, titanium valve is by 20%, and be warmed to 780 degree under vacuum and react, in the Ti-coated diamond after process, diamond accounts for 99.8%, and titanium valve accounts for 0.2%;
3rd step is Ti-coated diamond and pure cobalt powder by weight: Ti-coated diamond accounts for 8%, and cobalt powder accounts for 92% Homogeneous phase mixing;
4th step three-dimensional material mixer is fully uniformly mixed 45 minutes the Ti-coated diamond added and cobalt powder;
5th step is the material cold press cold-press moulding mixed; Cold pressing at normal temperatures, use the pressure of 80KN to suppress;
6th step colded pressing on chip packaged enter in swage frame, then use vacuum heating-press sintering machine, carry out hot forming; Hot pressing maximum temperature is 820 degree, maximum pressure 200KN, heat-insulation pressure keeping 3 minutes;
7th step carries out surface sand-blasting process packaging the cutter head of hot forming.
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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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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104148642B (en) * | 2014-07-24 | 2016-04-13 | 华侨大学 | Rare earth modified tungsten based anchoring agent diamond ultra-thin saw blade and manufacture method thereof |
| CN104148652B (en) * | 2014-08-11 | 2017-08-18 | 泉州众志金刚石工具有限公司 | A kind of preparation method of diamond block |
| CN104988345B (en) * | 2015-07-01 | 2017-02-22 | 重庆电子工程职业学院 | Tool processing technology |
| 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 |
| CN108097972B (en) * | 2017-12-28 | 2020-12-04 | 福建省泉州市华钻金刚石工具有限公司 | Preparation method of metal bond tool bit and diamond circular saw blade with metal bond 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 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1786274A (en) * | 2004-12-08 | 2006-06-14 | 上海江信超硬材料有限公司 | Diamond surface titanium coating nickel coating copper coating composite structure and its manufacturing method |
| US20080128951A1 (en) * | 2004-10-18 | 2008-06-05 | Smith International, Inc. | Impregnated diamond cutting structures |
| CN101195258A (en) * | 2007-12-29 | 2008-06-11 | 叶根培 | Granite cutting slice and production method thereof |
| CN101758560A (en) * | 2010-03-01 | 2010-06-30 | 安泰科技股份有限公司 | Marble cutting saw blade and preparation method thereof |
-
2012
- 2012-12-19 CN CN201210553393.XA patent/CN102974818B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080128951A1 (en) * | 2004-10-18 | 2008-06-05 | Smith International, Inc. | Impregnated diamond cutting structures |
| CN1786274A (en) * | 2004-12-08 | 2006-06-14 | 上海江信超硬材料有限公司 | Diamond surface titanium coating nickel coating copper coating composite structure and its manufacturing method |
| CN101195258A (en) * | 2007-12-29 | 2008-06-11 | 叶根培 | Granite cutting slice and production method thereof |
| CN101758560A (en) * | 2010-03-01 | 2010-06-30 | 安泰科技股份有限公司 | Marble cutting saw blade and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 钴基金刚石工具胎体材料的研究;宋月清等;《机械工程材料》;19930630;第17卷(第3期);第39页第25-30行及第41页表2 * |
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