CN103100977A - Preparation method of high-strength diamond grinding wheel dressing pen - Google Patents
Preparation method of high-strength diamond grinding wheel dressing pen Download PDFInfo
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- CN103100977A CN103100977A CN2013100327803A CN201310032780A CN103100977A CN 103100977 A CN103100977 A CN 103100977A CN 2013100327803 A CN2013100327803 A CN 2013100327803A CN 201310032780 A CN201310032780 A CN 201310032780A CN 103100977 A CN103100977 A CN 103100977A
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Abstract
The invention discloses a preparation method of a high-strength diamond grinding wheel dressing pen. The preparation method is characterized in that through utilization of the hot pressed sintering technology, polycrystalline diamond is sintered with wolfram carbide (WC) hard alloy as a pen head of the dressing pen. The preparation method includes the detail steps: cleaning the surface of the polycrystalline diamond, weighing and processing powder according to a certain material prescription of the WC hard alloy, sintering the diamond and the hard alloy materials to obtain the pen head of the dressing pen, and then brazing the pen head on a pen rod to obtain the high-strength diamond grinding wheel dressing pen. The grinding wheel dressing pen obtained through the preparation method has the advantages of being good in heat resistance and strength, and capable of meeting the requirement of precise machining, prolonging service life, reducing comprehensive cost, and being strong in process operability, and good in repeatability.
Description
Technical field
The present invention relates to a kind of high-intensity diamond grinding wheel dressing pen and preparation method thereof, definite say that a kind of nib has adopted diamond grinding wheel dressing pen that man-made polycrystalline diamond material and WC based hard alloy material sintering form and preparation method thereof.
Background technology
The emery wheel of grinding class, during processing work, the surface is easily cemented by the abrasive dust particle, affects ground effect.Therefore need to adopt a kind of grinding wheel dressing pen to remove the abrasive dust of wheel face, make emery wheel recover sharp property.Rely on during due to trimming wheel emery wheel and finishing pen or finishing knife to mill, larger to the wearing and tearing of nib, therefore generally adopt diamond as nib.But because China's natural diamond resource is more rare, especially waits grade diamond than waiting outer diamond price and will exceed tens times, therefore, present grinding wheel dressing pen is more to adopt diamond.
The processing method of existing diamond grinding wheel dressing pen normally adopts at pen head top pre-manufactured hole, with laser, diamond film is cut into required shape and size preplating simultaneously layer of metal titanium, then the diamond film of multilayer is superimposed together and inserts in the pre-manufactured hole of steel pen head top, fill out the growth scolder and be fitted together, process grinding wheel dressing pen.This processing method with accusing the filler welding is that shape, the size of repairing the pen nib are determined by the moulding of pre-manufactured hole fully, and heat resistance and intensity can be subject to the restriction of weld layer between the diamond rete simultaneously.
Summary of the invention
The deficiency that faces in using for present diamond grinding wheel dressing pen the invention provides a kind of high-intensity diamond grinding wheel dressing pen and preparation method thereof, solves that existing grinding wheel dressing pen is expensive, the problems such as heat resistance and undercapacity.It utilizes hot pressing and sintering technique, uses WC cemented carbide powder sintering to prepare the correction pen nib, then the finishing pen nib of sintering compacting is soldered on a finishing penholder.Not only keep adamantine high rigidity and wearability, improved again the written whole heat resistance of finishing pen and intensity, solved the problems such as the poor and cutting thermogenetic inner deformation of stress performance that the diamond film weld layer brings.
For achieving the above object, the invention provides a kind of preparation method of high-intensity diamond grinding wheel dressing pen, it is characterized in that comprising the following steps:
1, at first utilize ultrasonic cleaning technology to remove polycrystalline diamond surface contamination thing; By the weighing of certain WC based hard alloy material formula, ball milling, grind after oven dry, sieve stage by stage;
2, cleaned polycrystalline diamond and the cemented carbide powder handled well are put into sintering mold in order, and compress;
3, carry out sintering, moulding according to predefined sintering schedule in sintering furnace;
4, carry out the nib that suitable machined and polishing, reconditioning prepare after the taking-up nib;
The nib that 5, will obtain is brazed on penholder.
Above-mentioned WC based hard alloy material formula is take WC as matrix, and bonding agent is the metal with the stability at elevated temperature excellence, and adds appropriate nanostructured flexibilizer, the Hardening agent of high hard material micro mist and grain inhibitor powder.Matrix is WC sub-micro ground rice or nano powder, and mass fraction is 30～80%; Metal binding agent is one or more in Mo, Ni or rare earth metal, and mass fraction is 2～5%; The agent of nanometer Hardening is one or more of CNT/line, SiC nano wire/rod or TiC nano wire/rod, and mass fraction is 0.5～2%; The agent of high hard material micro mist Hardening is that high hard material diamond or CBN get one or both, and mass fraction is 10～70%; The grain inhibitor powder is TaC, VC, Cr
3C
2, in NdC, TiC one or more, mass fraction is 0.1～2%.
Above-mentioned ball milling adopts the wet ball-milling technology, and wherein solvent is absolute ethyl alcohol or industrial naptha, and abrading-ball is high hard wear-resisting WC ball.
Vacuum drying method is adopted in above-mentioned oven dry, and temperature is at 100～600 ℃, 6～48 hours time, and vacuum 0～-0.33Pa.
Above-mentioned sintering adopts discharge plasma sintering technology or Frequency Induction Heating sintering technology.In the discharge plasma sintering process, first pressing is 10～40MPa, 160～300 ℃/min of heating rate, and sintering temperature is 800～1400 ℃, temperature retention time 2～15min, heat preservation pressure 35～60MPa; 750 ℃ of cooldown rates were in the past identical with heating rate, and were cooling with stove after 750 ℃.And in the Frequency Induction Heating sintering process, first pressing is 10～40MPa, 200～500 ℃/min of heating rate, and sintering temperature is 900～1500 ℃, temperature retention time 5～20min, heat preservation pressure 30～60MPa; 750 ℃ of cooldown rates were in the past identical with heating rate, and were cooling with stove after 750 ℃.
Above-mentioned welding manner adopts the soldering of high frequency low temperature money base, and temperature is about 700 ℃.
Compared with prior art the present invention has following characteristics and beneficial effect:
1, because the present invention has adopted the man-made polycrystalline diamond material, substituted natural diamond, so greatly reduce the instrument cost.
2, the diamond of use is integral material here, and comparing existing multi-layer diamond film, superimposed to have processing simple, the characteristics such as stable molding.
3, described diamond---the Hardmetal materials nib has good heat resistance and intensity, can reach the requirement of accurate processing and increase the service life, and reduces integrated cost.
4, described preparation method's technique is workable, good reproducibility.
Description of drawings
Fig. 1 is the generalized section of single-point type diamond grinding wheel dressing pen.
Fig. 2 is the generalized section of four-point diamond grinding wheel dressing pen.
Fig. 3 is the A-A generalized section of Fig. 2.
Reference numeral: 1---man-made polycrystalline diamond, 2---WC based hard alloy material, 3---adhesives, 4---metal penholder.
The specific embodiment
The invention provides a kind of high-intensity diamond grinding wheel dressing pen and preparation method thereof, comprise that two parts of finishing pen nib and penholder form.Nib is spread to by man-made polycrystalline diamond and WC cemented carbide powder sintering, makes the rear soldering of nib and can obtain the finishing pen on penholder.
The present invention will be further described in detail below in conjunction with accompanying drawing.
Shown in Figure 1, embodiment one is a kind of single-point type diamond grinding wheel dressing pen.It is that process structure is simple, reduces process costs.It is characterized in that following steps are arranged:
1, material processed: at first utilize ultrasonic cleaning technology to remove polycrystalline diamond surface contamination thing; Press the sub-micron WC powder of mass fraction 75%, 7% Mo powder, 16% bortz powder, 0.8% NdC, 1.2% SiC nano whisker takes each reagent; The powder that takes is added in the high-energy stirring ball mill tank, and add the WC abrading-ball of 10 times of quality and the anhydrous ethanol solvent of 5 times of quality, stirring ball-milling 36 hours; Then add the Hardening agent ball milling that takes 80 minutes, then added the flexibilizer ball milling 20 minutes; The slurry of levigate mixing is put into vacuum drying chamber, under 60 ℃, vacuum-0.33Pa condition dry 30 minutes; Selecting the aperture after the powder of oven dry is ground with agate mortar is that the sieve of 1mm sieves.
2, dress mould: cleaned polycrystalline diamond and the cemented carbide powder of handling well are put into prefabricated sintering mold in order, and compress.
3, sintering: sinter molding in the discharge plasma sintering furnace, first pressing are 15MPa, 180 ℃/min of heating rate, 850 ℃ of sintering temperatures, temperature retention time 3min, heat preservation pressure 50MPa; 750 ℃ of cooldown rates were in the past identical with heating rate, and 750 ℃ are adopted later on stoves cold.
4, post processing 1: carry out the nib that suitable machined and polishing, reconditioning prepare after the taking-up nib.
5, soldering: the nib that will obtain adopts high frequency low temperature money base method for brazing to be fixed on the metal penholder, and temperature is controlled at 700 ℃ of left and right.
6, post processing 2: training finishing pen is carried out suitable machined and polishing.
Shown in Fig. 2,3, embodiment two is a kind of four-point diamond grinding wheel dressing pens.Be characterized in having adopted four artificial diamond's stone columns, can greatly improve the service life of diamond tool.Different from embodiment one is, four artificial diamond's stone columns in nib are arranged in parallel, and the WC based hard alloy material of parcel sinters wedge shape into, improves the enabling capabilities to four artificial diamond's stone columns, makes the finishing pen have better stress performance.It is characterized in that following steps are arranged:
1, material processed: at first utilize ultrasonic cleaning technology to remove polycrystalline diamond surface contamination thing; Press the sub-micron WC powder of mass fraction 77%, 6% Mo powder, 16% bortz powder, 0.5% NdC, 0.5% SiC nano whisker takes each reagent; The powder that takes is added in the high-energy stirring ball mill tank, and add the WC abrading-ball of 10 times of quality and the anhydrous ethanol solvent of 5 times of quality, stirring ball-milling 36 hours; Then add the Hardening agent ball milling that takes 0.5 hour, then added the flexibilizer ball milling 20 minutes; The slurry of levigate mixing is put into vacuum drying chamber, under 40 ℃, vacuum-0.33Pa condition dry 60 minutes; The powder of oven dry is ground with agate mortar, and to select the aperture be that the sieve of 11mm sieves.
2, dress mould: cleaned polycrystalline diamond and the cemented carbide powder of handling well are put into prefabricated sintering mold in order, and compress.
3, sintering: carry out sinter molding in the Frequency Induction Heating sintering furnace, first pressing is 15MPa, 200 ℃/min of heating rate, 850 ℃ of sintering temperatures, temperature retention time 3min, heat preservation pressure 35MPa; 750 ℃ of cooldown rates were in the past identical with heating rate, and 750 ℃ are adopted later on stoves cold.
4, post processing 1: carry out the nib that suitable machined and polishing, reconditioning prepare after the taking-up nib;
5, soldering: the nib that will arrive adopts high frequency low temperature money base soldering tech to be fixed on the metal penholder, and temperature is controlled at 700 ℃ of left and right;
6, post processing 2: training finishing pen is carried out suitable machined and polishing.
Claims (6)
1. high-intensity diamond grinding wheel dressing pen and preparation method thereof, its feature is characterized in that comprising the following steps:
A, at first utilize ultrasonic cleaning technology to remove polycrystalline diamond surface contamination thing; By the weighing of certain WC based hard alloy material formula, ball milling, grind after oven dry, sieve stage by stage;
B, cleaned polycrystalline diamond and the cemented carbide powder handled well are put into sintering mold in order, and compress;
C, carry out sintering, moulding according to predefined sintering schedule in sintering furnace;
Carry out the nib that suitable machined and polishing, reconditioning prepare after d, taking-up nib;
E, the nib that will obtain are brazed on penholder.
2. a kind of high-intensity diamond grinding wheel dressing pen described according to right 1 and preparation method thereof, it is characterized in that described WC based hard alloy material formula is take WC as matrix, bonding agent is the metal with the stability at elevated temperature excellence, and adds appropriate nanostructured flexibilizer, the Hardening agent of high hard material micro mist and grain inhibitor powder.Matrix is WC industry powder and micron or nano powder, and mass fraction is 30～80%; Metal binding agent is one or more in Mo, Ni or rare earth metal, and mass fraction is 2～5%; The agent of nanometer Hardening is one or more of CNT/line, SiC nano wire/rod or TiC nano wire/rod, and mass fraction is 0.5～2%; The agent of high hard material micro mist Hardening is that high hard material diamond or CBN get one or both, and mass fraction is 10～70%; The grain inhibitor powder is TaC, VC, Cr
3C
2, in NdC, TiC one or more, mass fraction is 0.1～2%.
3. a kind of high-intensity diamond grinding wheel dressing pen described according to right 1 and preparation method thereof, is characterized in that described ball milling adopts the wet ball-milling technology, and wherein solvent is absolute ethyl alcohol or industrial naptha, and abrading-ball is high hard wear-resisting WC ball.
4. a kind of high-intensity diamond grinding wheel dressing pen described according to right 1 and preparation method thereof is characterized in that described oven dry adopts vacuum drying method, and temperature is at 100～600 ℃, 6～48 hours time, and vacuum 0～-0.33Pa.
5. a kind of high-intensity diamond grinding wheel dressing pen described according to right 1 and preparation method thereof, is characterized in that described sintering adopts discharge plasma sintering technology or Frequency Induction Heating sintering technology.In the discharge plasma sintering process, first pressing is 10～40MPa, 160～300 ℃/min of heating rate, and sintering temperature is 800～1400 ℃, temperature retention time 2～15min, heat preservation pressure 35～60MPa; 750 ℃ of cooldown rates were in the past identical with heating rate, and were cooling with stove after 750 ℃.And in the Frequency Induction Heating sintering process, first pressing is 10～40MPa, 200～500 ℃/min of heating rate, and sintering temperature is 900～1500 ℃, temperature retention time 5～20min, heat preservation pressure 30～60MPa; 750 ℃ of cooldown rates were in the past identical with heating rate, and were cooling with stove after 750 ℃.
6. a kind of high-intensity diamond grinding wheel dressing pen described according to right 1 and preparation method thereof, is characterized in that described welding manner adopts the soldering of high frequency low temperature money base, and temperature is about 700 ℃.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104875114A (en) * | 2015-05-28 | 2015-09-02 | 江苏耐尔特钻石有限公司 | Powder dresser |
| CN105349965A (en) * | 2015-11-03 | 2016-02-24 | 富耐克超硬材料股份有限公司 | Polycrystalline diamond compact and manufacturing method thereof |
| CN105414692A (en) * | 2016-01-11 | 2016-03-23 | 苏州科技学院 | Manufacturing method of polycrystalline cubic boron nitride cutter achieved through high-frequency induction heating brazing |
| CN105729308A (en) * | 2016-05-09 | 2016-07-06 | 廊坊西波尔钻石技术有限公司 | Brazing type diamond truing pens and processing method |
| CN109231990A (en) * | 2018-11-06 | 2019-01-18 | 河海大学 | A kind of preparation method of tungsten carbide-diamond composite |
| CN110280756A (en) * | 2019-07-15 | 2019-09-27 | 石家庄海川工具有限公司 | Add the diamond engineering thin-walled drill and its preparation process of cubic boron nitride |
| CN115194160A (en) * | 2022-08-03 | 2022-10-18 | 苏州思珀利尔工业技术有限公司 | Method for producing spherical polycrystalline diamond sintered body |
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| JP2001341073A (en) * | 2000-03-30 | 2001-12-11 | Allied Material Corp | Form dresser using columnar diamond |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104875114A (en) * | 2015-05-28 | 2015-09-02 | 江苏耐尔特钻石有限公司 | Powder dresser |
| CN105349965A (en) * | 2015-11-03 | 2016-02-24 | 富耐克超硬材料股份有限公司 | Polycrystalline diamond compact and manufacturing method thereof |
| CN105349965B (en) * | 2015-11-03 | 2018-05-29 | 富耐克超硬材料股份有限公司 | A kind of composite polycrystal-diamond and preparation method thereof |
| CN105414692A (en) * | 2016-01-11 | 2016-03-23 | 苏州科技学院 | Manufacturing method of polycrystalline cubic boron nitride cutter achieved through high-frequency induction heating brazing |
| CN105729308A (en) * | 2016-05-09 | 2016-07-06 | 廊坊西波尔钻石技术有限公司 | Brazing type diamond truing pens and processing method |
| CN109231990A (en) * | 2018-11-06 | 2019-01-18 | 河海大学 | A kind of preparation method of tungsten carbide-diamond composite |
| CN110280756A (en) * | 2019-07-15 | 2019-09-27 | 石家庄海川工具有限公司 | Add the diamond engineering thin-walled drill and its preparation process of cubic boron nitride |
| CN110280756B (en) * | 2019-07-15 | 2021-07-06 | 石家庄海川工具有限公司 | Diamond engineering thin-wall drill added with cubic boron nitride and preparation process thereof |
| CN115194160A (en) * | 2022-08-03 | 2022-10-18 | 苏州思珀利尔工业技术有限公司 | Method for producing spherical polycrystalline diamond sintered body |
| CN115194160B (en) * | 2022-08-03 | 2024-01-23 | 苏州思珀利尔工业技术有限公司 | Method for preparing spherical polycrystalline diamond sintered body |
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