CN113305362A - Method for repairing sintered diamond tool for precision machining through ultrasonic waves - Google Patents
Method for repairing sintered diamond tool for precision machining through ultrasonic waves Download PDFInfo
- Publication number
- CN113305362A CN113305362A CN202110659432.3A CN202110659432A CN113305362A CN 113305362 A CN113305362 A CN 113305362A CN 202110659432 A CN202110659432 A CN 202110659432A CN 113305362 A CN113305362 A CN 113305362A
- Authority
- CN
- China
- Prior art keywords
- sintered diamond
- welding
- repaired
- sintered
- precision machining
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D63/00—Dressing the tools of sawing machines or sawing devices for use in cutting any kind of material, e.g. in the manufacture of sawing tools
- B23D63/08—Sharpening the cutting edges of saw teeth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/10—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating making use of vibrations, e.g. ultrasonic welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
- B24D18/009—Tools not otherwise provided for
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
本发明提供了一种通过超声波修复精密加工用烧结金刚石工具的方法，本发明属于超硬材料工具再制造技术领域。修复对象为破损后的精密加工用烧结金刚石工具，修复材料为烧结金刚石复合片。复合片中的磨料为200/300目的金刚石、金属胎体原料为300/400目的Ni基合金粉、Cu基合金粉或Fe基合金粉。通过恰当的烧结工艺制作成金刚石复合片，再利用恰当的超声波焊接工艺将金刚石复合片焊接到待修复工具的待修复处。通过本发明修复的精密加工用烧结金刚石工具性能恢复良好，本方法操作简单，修复效率高，具有广阔的应用前景。The invention provides a method for repairing a sintered diamond tool for precision machining by ultrasonic waves, and belongs to the technical field of superhard material tool remanufacturing. The repair object is the damaged sintered diamond tool for precision machining, and the repair material is the sintered diamond composite sheet. The abrasive in the composite sheet is 200/300 mesh diamond, and the metal matrix raw material is 300/400 mesh Ni-based alloy powder, Cu-based alloy powder or Fe-based alloy powder. The diamond composite sheet is made by an appropriate sintering process, and then the diamond composite sheet is welded to the to-be-repaired part of the tool to be repaired by an appropriate ultrasonic welding process. The sintered diamond tool for precision machining repaired by the invention has good performance recovery, the method is simple to operate, has high repair efficiency, and has broad application prospects.
Description
Technical Field
The invention belongs to the technical field of remanufacturing of superhard material tools, and particularly relates to a method for repairing a sintered diamond tool for precision machining through ultrasonic waves, wherein the repaired sintered diamond tool is used for accurately grinding or polishing materials such as high-hardness alloy, ceramic, glass, stone, semiconductor monocrystalline silicon and the like.
Background
Since the 50 s of the 20 th century, diamond and its products have been widely used in precision machining of relatively expensive materials such as single crystal silicon and sapphire. The variety of diamond tools is many, and among them, sintered diamond tools have become the mainstream tool for precision machining due to their advantages of long service life, high grinding precision, stable grinding, and the like.
However, as the machining is carried out, the precision of the sintered diamond tool is poor, the sintered diamond tool needs to be shaped continuously, but some parts, such as the edge or the outer edge of the sintered diamond tool, are obviously worn due to much larger stress compared with other parts, and the repair welding repair is carried out only by shaping and large workload.
The repair welding repair method for the sintered diamond tool comprises soldering, cold welding, laser welding and electron beam welding, but all of the methods belong to the field of fusion welding, and the matrix structure of a diamond sintered body on the sintered diamond tool is seriously influenced. Also, since the abrasive particles used for manufacturing the sintered diamond tool for precision machining are generally fine, fusion welding easily causes the fine abrasive particles to rapidly generate graphitization thermal damage.
The ultrasonic welding can overcome the defects, and has the advantages of energy conservation, environmental protection, high production efficiency, seamless welding, low rejection rate and the like, so the ultrasonic welding method is used for repairing the sintered diamond tool for precision machining.
Disclosure of Invention
The invention aims to provide a method for repairing a sintered diamond tool for precision machining by ultrasonic waves. The welding method overcomes the problem that repair welding methods such as brazing, cold welding, laser welding, electron beam welding and the like have serious influence on the matrix and the fine abrasive particles of the sintered body. The method has the advantages of simple and convenient operation, environmental protection, good repairing quality, high repairing efficiency and the like, and has better application prospect.
The technical scheme adopted by the invention is that the method for repairing the sintered diamond tool for precision machining by ultrasonic comprises the following steps:
(1) selecting an abrasive: the abrasive is 200/300 mesh diamond;
(2) selecting raw materials of a metal matrix: the raw material is NiCuCoSn alloy powder (5-9 wt.% of Cu, 2 wt.% of Co, 3 wt.% of Sn and the balance of Ni) of 300/400 meshes, CuCoSn alloy powder (6-8 wt.% of Co, 10 wt.% of Sn and the balance of Cu) or FeCoSn alloy powder (6-8 wt.% of Co, 10 wt.% of Sn and the balance of Fe);
(3) uniformly mixing the grinding material and the metal matrix powder;
(4) sintering the uniformly mixed abrasive and metal matrix powder to manufacture a sintered compact with the thickness of 1-3 mm;
(5) removing oil stains and other dirt on the surface of the sintered diamond tool for precision machining to be repaired, placing the sintered composite sheet at the position to be repaired of the sintered diamond tool to be repaired, and pressing the sintered composite sheet by using a welding head of an ultrasonic welding machine;
(6) the parameters of the ultrasonic welding were set as: the working surface of the welding head of the ultrasonic welding machine is 4-9 mm2The static welding pressure is 200-400N, the ultrasonic amplitude is 14-18 mu m, the ultrasonic frequency is 12-18 KHz, and the welding time is 0.5-1.5 s;
(7) starting an ultrasonic welding machine to finish welding;
(8) and (5) repeating the steps (5) to (7), finishing the repair of other parts to be repaired of the sintered diamond tool, and finishing the repaired parts.
The sintering of the sintered compact piece specifically uses the following sintering parameters: under a vacuum environment, the hot pressing temperature is 600-850 ℃, the hot pressing pressure is 18-25 MPa, the hot pressing time is 2-6 min, and the heat preservation time is 3-5 min.
The method for repairing the sintered diamond tool for precision machining by ultrasonic repair welding has the advantages that:
(1) the ultrasonic welding adopted by the invention has the advantages of short welding time, high efficiency, energy conservation, environmental protection, capability of welding special-shaped surfaces, convenience in operation and the like.
(2) The sintered diamond tool for precision machining repaired by the process of the invention has the advantages that the matrix and the fine abrasive particles of the sintered body can keep good mechanical properties.
(3) The sintered diamond tool for precision machining repaired by the process of the invention has the advantages that welding defects such as slag inclusion and the like do not occur at the welding seam, and the bonding strength of the welding seam is high and stable.
(4) The sintered diamond tool for precision machining repaired by the process has low rejection rate.
Detailed Description
The invention will be described in more detail with reference to the examples given below:
example 1: and repairing the sintered diamond bowl-shaped grinding wheel for precision machining by using the Ni-based diamond composite sheet.
The method comprises the following steps:
(1) selecting an abrasive: the abrasive is 200/300 mesh diamond;
(2) selecting raw materials of a metal matrix: the starting material was 300/400 mesh NiCuCoSn alloy powder (6 wt.% Cu, 2 wt.% Co, 3 wt.% Sn, balance Ni);
(3) uniformly mixing the grinding material and the metal matrix powder;
(4) sintering the uniformly mixed abrasive and metal matrix powder to manufacture a sintered compact with the thickness of 2 mm;
(5) removing oil stains and other dirt on the surface of the sintered diamond tool for precision machining to be repaired, placing the sintered composite sheet at the position to be repaired of the sintered diamond tool to be repaired, and pressing the sintered composite sheet by using a welding head of an ultrasonic welding machine;
(6) the parameters of the ultrasonic welding were set as: the working surface of the welding head of the ultrasonic welding machine is 2.5 multiplied by 2.5mm2The static welding pressure is 300N, the ultrasonic amplitude is 16 mu m, the ultrasonic frequency is 16KHz, and the welding time is 0.6 s;
(7) starting an ultrasonic welding machine to finish welding;
(8) and (5) repeating the steps (5) to (7), finishing the repair of other parts to be repaired of the sintered diamond tool, and finishing the repaired parts.
The sintering of the sintered compact piece specifically uses the following sintering parameters: under the vacuum environment, the hot pressing temperature is 750 ℃, the hot pressing pressure is 20MPa, the hot pressing time is 5min, and the heat preservation time is 4 min.
Example 2: and repairing the sintered diamond grinding head for precision machining by using the Cu-based diamond composite sheet.
The method comprises the following steps:
(1) selecting an abrasive: the abrasive is 200/300 mesh diamond;
(2) selecting raw materials of a metal matrix: the raw material was 300/400 mesh CuCoSn alloy powder (7.5 wt.% Co, 10 wt.% Sn, balance Cu);
(3) uniformly mixing the grinding material and the metal matrix powder;
(4) sintering the uniformly mixed abrasive and metal matrix powder to manufacture a sintered compact with the thickness of 2 mm;
(5) removing oil stains and other dirt on the surface of the sintered diamond tool for precision machining to be repaired, placing the sintered composite sheet at the position to be repaired of the sintered diamond tool to be repaired, and pressing the sintered composite sheet by using a welding head of an ultrasonic welding machine;
(6) the parameters of the ultrasonic welding were set as: the working surface of the welding head of the ultrasonic welding machine is 2.2 multiplied by 2.2mm2The static welding pressure is 250N, the ultrasonic amplitude is 17 μm, the ultrasonic frequency is 14KHz, and the welding time is 0.8 s;
(7) starting an ultrasonic welding machine to finish welding;
(8) and (5) repeating the steps (5) to (7), finishing the repair of other parts to be repaired of the sintered diamond tool, and finishing the repaired parts.
The sintering of the sintered compact piece specifically uses the following sintering parameters: under the vacuum environment, the hot pressing temperature is 650 ℃, the hot pressing pressure is 20MPa, the hot pressing time is 4min, and the heat preservation time is 3.5 min.
Example 3: and repairing the sintered diamond saw blade for precision machining by using the Fe-based diamond composite sheet.
Comprises the following steps:
(1) selecting an abrasive: the abrasive is 200/300 mesh diamond;
(2) selecting raw materials of a metal matrix: the raw material is 300/400-mesh FeCoSn alloy powder (7 wt.% Co, 10 wt.% Sn, and the balance Fe);
(3) uniformly mixing the grinding material and the metal matrix powder;
(4) sintering the uniformly mixed abrasive and metal matrix powder to manufacture a sintered compact with the thickness of 2 mm;
(5) removing oil stains and other dirt on the surface of the sintered diamond tool for precision machining to be repaired, placing the sintered composite sheet at the position to be repaired of the sintered diamond tool to be repaired, and pressing the sintered composite sheet by using a welding head of an ultrasonic welding machine;
(6) the parameters of the ultrasonic welding were set as: the working surface of the welding head of the ultrasonic welding machine is 2.7 multiplied by 2.7mm2The static welding pressure is 300N, the ultrasonic amplitude is 16 mu m, the ultrasonic frequency is 16KHz, and the welding time is 0.7 s;
(7) starting an ultrasonic welding machine to finish welding;
(8) and (5) repeating the steps (5) to (7), finishing the repair of other parts to be repaired of the sintered diamond tool, and finishing the repaired parts.
The sintering of the sintered compact piece specifically uses the following sintering parameters: under a vacuum environment, the hot pressing temperature is 780 ℃, the hot pressing pressure is 22MPa, the hot pressing time is 5min, and the heat preservation time is 4 min.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention in any way, so that any person skilled in the art can make changes or modifications to the equivalent embodiments using the above disclosure. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are still within the protection scope of the present invention, unless they depart from the technical spirit of the present invention.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110659432.3A CN113305362B (en) | 2021-06-15 | 2021-06-15 | A method of repairing sintered diamond tools for precision machining by ultrasonic waves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110659432.3A CN113305362B (en) | 2021-06-15 | 2021-06-15 | A method of repairing sintered diamond tools for precision machining by ultrasonic waves |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113305362A true CN113305362A (en) | 2021-08-27 |
| CN113305362B CN113305362B (en) | 2024-04-02 |
Family
ID=77378876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110659432.3A Active CN113305362B (en) | 2021-06-15 | 2021-06-15 | A method of repairing sintered diamond tools for precision machining by ultrasonic waves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113305362B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114571197A (en) * | 2022-04-15 | 2022-06-03 | 青岛科技大学 | Novel method for protecting welding part of sintered diamond saw blade for wet cutting |
| CN115533103A (en) * | 2022-10-13 | 2022-12-30 | 青岛科技大学 | A new method of manufacturing superhard material sintered body for cutting reinforced concrete |
Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030121369A1 (en) * | 2001-11-15 | 2003-07-03 | Hiroyasu Yabuki | Manufacturing method of diamond cutter |
| JP2004087539A (en) * | 2002-08-23 | 2004-03-18 | Sumitomo Electric Ind Ltd | Ultrasonic bonding tool |
| CN1669708A (en) * | 2004-03-19 | 2005-09-21 | 中南大学 | Diamond/cubic boron nitride saw blade for cutting metal and method of making the same |
| CN101280683A (en) * | 2008-05-27 | 2008-10-08 | 中南大学 | A diamond-impregnated coal mining pick and its manufacturing process |
| CN101909823A (en) * | 2007-12-27 | 2010-12-08 | 3M创新有限公司 | Shaped, fractured abrasive particle, abrasive article using same and method of making |
| CN102189260A (en) * | 2011-05-05 | 2011-09-21 | 王晨兰 | Method for preparing diamond blade by using special metal bond |
| CN102500912A (en) * | 2011-11-18 | 2012-06-20 | 上海交通大学 | Method for performing surface modification on metal by ultrasonic nano-welding |
| CN102658411A (en) * | 2012-05-24 | 2012-09-12 | 哈尔滨工业大学 | Ultrasonic brazing method for high-volume-fraction silicon carbide particle enhanced aluminum-base composite and low-expansion alloy |
| CN104508229A (en) * | 2012-06-22 | 2015-04-08 | 威达国际工业有限合伙公司 | Methods to repair worn or eroded PDC cutters, cutters so repaired, and use of repaired PDC cutters in drill bits or other tools |
| CN104802339A (en) * | 2015-05-04 | 2015-07-29 | 深圳市鑫立扬精密科技有限公司 | Quick precision mold preparation method |
| CN105414800A (en) * | 2016-01-11 | 2016-03-23 | 苏州科技学院 | High-frequency-induction-heating ultrasonic-vibration-assisting preparing method of single-layer-diamond brazed grinding wheel |
| CN108032046A (en) * | 2017-12-11 | 2018-05-15 | 刘薇 | A kind of PCD tool sharpenings technique |
| CN109530896A (en) * | 2019-01-15 | 2019-03-29 | 青岛科技大学 | A kind of new method for making super hard abrasive tool by welding resistance legal system |
| CN109624097A (en) * | 2018-12-03 | 2019-04-16 | 江苏锋泰工具有限公司 | Drill bit and diamond core drill bit |
| CN109676141A (en) * | 2017-12-06 | 2019-04-26 | 全亿大科技（佛山）有限公司 | The manufacturing method and abnormal complex metal product of abnormal complex metal product |
| CN109808258A (en) * | 2019-03-13 | 2019-05-28 | 哈尔滨工程大学烟台研究院 | Diamond layer-paved copper-based high-thermal-conductivity composite material and preparation method thereof |
| CN110355699A (en) * | 2019-05-19 | 2019-10-22 | 北京工业大学 | A kind of aluminium base diamond composite ELID grinding wheel for grinding and preparation method thereof |
| CN110523971A (en) * | 2019-09-12 | 2019-12-03 | 厦门高时实业有限公司 | A method for preparing diamond tools by vacuum pre-sintering and diamond tools |
-
2021
- 2021-06-15 CN CN202110659432.3A patent/CN113305362B/en active Active
Patent Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030121369A1 (en) * | 2001-11-15 | 2003-07-03 | Hiroyasu Yabuki | Manufacturing method of diamond cutter |
| JP2004087539A (en) * | 2002-08-23 | 2004-03-18 | Sumitomo Electric Ind Ltd | Ultrasonic bonding tool |
| CN1669708A (en) * | 2004-03-19 | 2005-09-21 | 中南大学 | Diamond/cubic boron nitride saw blade for cutting metal and method of making the same |
| CN101909823A (en) * | 2007-12-27 | 2010-12-08 | 3M创新有限公司 | Shaped, fractured abrasive particle, abrasive article using same and method of making |
| CN101280683A (en) * | 2008-05-27 | 2008-10-08 | 中南大学 | A diamond-impregnated coal mining pick and its manufacturing process |
| CN102189260A (en) * | 2011-05-05 | 2011-09-21 | 王晨兰 | Method for preparing diamond blade by using special metal bond |
| CN102500912A (en) * | 2011-11-18 | 2012-06-20 | 上海交通大学 | Method for performing surface modification on metal by ultrasonic nano-welding |
| CN102658411A (en) * | 2012-05-24 | 2012-09-12 | 哈尔滨工业大学 | Ultrasonic brazing method for high-volume-fraction silicon carbide particle enhanced aluminum-base composite and low-expansion alloy |
| CN104508229A (en) * | 2012-06-22 | 2015-04-08 | 威达国际工业有限合伙公司 | Methods to repair worn or eroded PDC cutters, cutters so repaired, and use of repaired PDC cutters in drill bits or other tools |
| CN104802339A (en) * | 2015-05-04 | 2015-07-29 | 深圳市鑫立扬精密科技有限公司 | Quick precision mold preparation method |
| CN105414800A (en) * | 2016-01-11 | 2016-03-23 | 苏州科技学院 | High-frequency-induction-heating ultrasonic-vibration-assisting preparing method of single-layer-diamond brazed grinding wheel |
| CN109676141A (en) * | 2017-12-06 | 2019-04-26 | 全亿大科技（佛山）有限公司 | The manufacturing method and abnormal complex metal product of abnormal complex metal product |
| CN108032046A (en) * | 2017-12-11 | 2018-05-15 | 刘薇 | A kind of PCD tool sharpenings technique |
| CN109624097A (en) * | 2018-12-03 | 2019-04-16 | 江苏锋泰工具有限公司 | Drill bit and diamond core drill bit |
| CN109530896A (en) * | 2019-01-15 | 2019-03-29 | 青岛科技大学 | A kind of new method for making super hard abrasive tool by welding resistance legal system |
| CN109808258A (en) * | 2019-03-13 | 2019-05-28 | 哈尔滨工程大学烟台研究院 | Diamond layer-paved copper-based high-thermal-conductivity composite material and preparation method thereof |
| CN110355699A (en) * | 2019-05-19 | 2019-10-22 | 北京工业大学 | A kind of aluminium base diamond composite ELID grinding wheel for grinding and preparation method thereof |
| CN110523971A (en) * | 2019-09-12 | 2019-12-03 | 厦门高时实业有限公司 | A method for preparing diamond tools by vacuum pre-sintering and diamond tools |
Non-Patent Citations (2)
| Title |
|---|
| 何志坚;仇君;: "金刚石圆锯片锯齿疲劳断裂分析", 金刚石与磨料磨具工程, no. 05, pages 16 - 20 * |
| 张磊;: "超声波焊接镍/铝异种金属研究", 科技创新与应用, no. 33, pages 10 - 11 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114571197A (en) * | 2022-04-15 | 2022-06-03 | 青岛科技大学 | Novel method for protecting welding part of sintered diamond saw blade for wet cutting |
| CN115533103A (en) * | 2022-10-13 | 2022-12-30 | 青岛科技大学 | A new method of manufacturing superhard material sintered body for cutting reinforced concrete |
| CN115533103B (en) * | 2022-10-13 | 2024-06-11 | 青岛科技大学 | Manufacturing method of superhard material sintered body for reinforced concrete cutting |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113305362B (en) | 2024-04-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104014922B (en) | A kind of hard alloy and the quick diffusion welding method of steel | |
| CN112030161A (en) | A kind of high-entropy alloy powder for laser cladding and using method thereof | |
| CN113305362A (en) | Method for repairing sintered diamond tool for precision machining through ultrasonic waves | |
| CN110117788A (en) | A kind of preparation method of CoCrFeMnNi high-entropy alloy cladding layer | |
| CN103911612B (en) | The Cr12MoV cold punching die laser repairing process that wolfram varbide is cladding alloy is added with cobalt-based | |
| CN110747377B (en) | High-chromium-nickel-based high-temperature alloy and preparation method and application thereof | |
| CN101704143B (en) | Method for soldering and welding hard alloy/steel compound tappet of engine by high-frequency induction | |
| CN105619272B (en) | A kind of production method of laser Furnace Brazing of Diamond Grinding Wheel With Ni | |
| CN101602188B (en) | CBN grinding wheel | |
| CN105215795B (en) | Non-crystaline amorphous metal product abnormity method for processing surface | |
| CN103692363B (en) | A kind of super-abrasive grinding wheel for processing heterogeneous metal component | |
| CN110039263A (en) | A kind of person of outstanding talent for ultrahigh speed laser cladding layer gram is capable of processing technique | |
| CN112226766A (en) | Preparation method of high-entropy alloy powder laser cladding layer | |
| CN114346346A (en) | A method of using high-entropy alloy brazing to connect high-entropy carbide ceramics | |
| CN101054668B (en) | Alloy powder for repairing engine member abandonment die by laser, manufacture method and application thereof | |
| CN106699190A (en) | Method for preparing polycrystalline sintered body by using cubic boron nitride single crystal bioblast as initial raw material | |
| CN109530896B (en) | A new method for making superabrasive tools by solder mask method | |
| CN102029298B (en) | Al2O3/TiC ceramic drawing die and its manufacturing method | |
| CN1597219A (en) | Preparation method of single layer soldering diamond tool | |
| CN114193339A (en) | A kind of metal bond diamond abrasive tool and preparation method thereof | |
| CN111515872B (en) | Powder metallurgy integrated forming method for hollow diamond | |
| CN108145302A (en) | A kind of SPS diffusion welding methods of WC hard alloy of the same race | |
| CN110394738B (en) | A special abrasive tool suitable for grinding of ceramic material rotating body parts and its manufacturing process | |
| CN115991609A (en) | A ceramic-metal discharge plasma connection method | |
| CN109877551A (en) | PCD table rank rose reamer processing technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |