CN103831740B - A kind of cermet combined binder and combined binder skive - Google Patents
A kind of cermet combined binder and combined binder skive Download PDFInfo
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- CN103831740B CN103831740B CN201410108373.0A CN201410108373A CN103831740B CN 103831740 B CN103831740 B CN 103831740B CN 201410108373 A CN201410108373 A CN 201410108373A CN 103831740 B CN103831740 B CN 103831740B
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Abstract
The invention belongs to skive field, be specifically related to a kind of cermet combined binder and combined binder skive.Described cermet combined binder is made up of the raw material of following percentage by weight: 663 bronze powders 60 ~ 80%, ceramic powder 20 ~ 40%; Described ceramic powder is self-control, is made up of: silica SiO the raw material of following percentage by weight
245 ~ 60%, boron oxide B
2o
320 ~ 30%, potassium oxide K
2o? 10 ~ 15%, magnesia MgO? 5 ~ 10%, calcium oxide CaO? 2 ~ 5%; Described combined binder skive is made up of the raw material of following volume ratio: the percent by volume of diamond abrasive, combined binder, pore creating material is respectively: 25 ~ 40%, 55 ~ 75%, 2 ~ 3%.When the skive adopting above-mentioned metal-Ceramic Composite bonding agent to prepare uses on 5-shaft linkage numerical control lathe, both vitrified bond sharpness had been maintained good, the characteristic that self-sharpening is good, there is again the advantage that metallic bond rigidity is high, shape retention is good, comprehensive process improved efficiency 100 ~ 150%.
Description
Technical field
The combined binder skive that the present invention relates to a kind of cermet combined binder and use this cermet combined binder to prepare, belongs to skive field.
Background technology
Emery wheel is the main tool of grinding, and it is the porous body be made up of abrasive material and bonding agent.Take diamond abrasive as raw material, make bonding agent respectively with metal powder, resin-oatmeal, pottery, the central authorities of making have the circular bonded abrasive tool of through hole to be called skive.The characteristic that has due to diamond abrasive (hardness is high, compression strength is high, wearability good), make diamond abrasive tool in grinding, become the ideal tools of grinding hard brittle material and carbide alloy, be widely used in metal and the hard brittle materia of processing low iron content.
Along with the development of science and technology, numerical control ultra-precision grinding machine, high-speed, high precision crankshaft grinding machine and camshaft grinding machine, all kinds of high-precision high-speed special purpose grinders etc., become one of field that China gives priority to, and the raising of working (machining) efficiency is the important directions of numerically control grinder field development.Therefore especially the performance requirement of multi-axis linkage numerical control grinding machine to skive is higher for numerically control grinder, requires that the cutting force of emery wheel is good, sharp; Require that again the shape retention of emery wheel is good, processing can be continued; Require simultaneously emery wheel can Nai Gaore, resistance to brute force extruding.
Although traditional resin diamond grinding wheel sharpness is good, self-sharpening is good, and heat resistance is low, and wearability is not enough, and finishing gap is short, affects production efficiency; Although ceramic metal diamond grinding wheel sharpness is good, wear no resistance, difficult finishing; Although metallic diamond emery wheel shape retention is good, self-sharpening is bad, cannot meet the needs continuing processing.
Can sharp, the self-sharpening that skive is excellent and superpower wearability fully improve the key of numerically control grinder working (machining) efficiency; And grinding wheel bond is the key factor affecting skive performance, traditional single bonding agent can not meet the demands the needs of numerically control grinder skive performance of high working (machining) efficiency.
Along with the progress of science and technology, the understanding of people to metal, macromolecule, inorganic material is deepened gradually, and the combined binder be made up of two kinds of emery grinding wheel binders have also been obtained everybody concern.
Pottery is combined with metal material, the basis of vitrified bond adds the cermet combined binder that metal dust can obtain having concurrently ceramic material fragility and metal material toughness.Chinese patent ZL200710043981.8 discloses a kind of ceramic metal composite bonding agent for cubic boron nitride abrasive wheel, is made up of: silica SiO following percentage by weight raw material
245-50%, alundum (Al2O3) Al
2o
320-25%, potassium oxide K
2o6-8.5%, sodium oxide molybdena Na
2o2.5-6.5% and barium monoxide BaO4-9%, copper powder Cu2-6%, glass putty Sn0.5-1.5% and zinc powder Zn0.3-1%; The advantage of this invention is that the CBN emery wheel made can make roughness value bring up to 0.3mm by RA0.5mm compared with the wheel grinding workpiece that vitrified bond makes, and flatness can reach 0.8mm, and the depth of parallelism can reach≤2mm; Wheel life improves 30%, and single wheel grinding workpiece number brings up to 12000-15000 by 8000-10000.But the ceramic metal composite bonding agent described in this patent of invention take pottery as matrix, metal filled as toughness reinforcing phase on a small quantity; It designs with the sintering process of vitrified bond, therefore its sintering temperature is high, so this combined binder is only suitable for being applied to cubic boron nitride abrasive wheel, be not suitable for skive, the emery wheel application obtained is the processing of iron group metal material, cannot be applied to the processing of nonmetal and non-iron group metal material.
Summary of the invention
The object of this invention is to provide a kind of cermet combined binder for the preparation of skive, this combined binder take metal as the cermet of matrix, the ceramic filler of controlled micro crystallization is as the sharp phase of increasing, and it designs with the sintering process of metallic bond, is applicable to skive; The combined binder skive adopting this cermet combined binder to prepare has both excellent sharpness and superpower wearability, thus has high grinding efficiency.
For achieving the above object, the concrete technical scheme of the present invention is: a kind of cermet combined binder for the preparation of skive, is made up of the raw material of following weight ratio:
663 bronze powders 60 ~ 80%
Ceramic powder 20 ~ 40%
Described ceramic powder is obtained by the raw material mixed smelting of following weight ratio:
Silica SiO
245 ~ 60%, boron oxide B
2o
320 ~ 30%, potassium oxide K
2o10 ~ 15%, magnesia MgO5 ~ 10%, calcium oxide CaO2 ~ 5%.
663 bronze powders in the present invention are commercially available, must meet national standard; Microcosmic is dark yellow droplet-like alloy powder, comparatively stable under normal temperature, and actual density is 8.3 ~ 8.9g/cm
3, loose specific weight 2.8 ~ 3.1g/cm
3.In preferred technical scheme, described 663 bronze powders are made up of the raw material of following weight ratio: tin 5 ~ 7%, zinc 5 ~ 7%, and plumbous 2 ~ 4%, impurity 0 ~ 1.3%, surplus is copper.Wherein impurity is non-interference impurity, during high temperature sintering and bonding agent Fails To Respond.
In technique scheme, the preparation process of described ceramic powder is:
(1) prepare mixed-powder: by prepare ceramic powder raw material mixing and ball milling after after 325 mesh standard sieves, obtained mixed-powder;
(2) smelting glass: by mixed-powder obtained for step (1) 1700 DEG C of meltings 3 hours in electric furnace, chilling, obtains devitrified glass block;
(3) ceramic powder is prepared: devitrified glass block obtained for step (2) after broken 10 hours, after 325 mesh standard sieves, is namely obtained ceramic powder in ball mill.
In preferred technical scheme, described ceramic powder is obtained by the raw material mixed smelting of following weight ratio:
Silica SiO
255%, boron oxide B
2o
325%, potassium oxide K
2o10%, magnesia MgO7.5%, calcium oxide CaO2.5%.The various raw materials preparing ceramic powder are all preferably analyzed pure, and analytically pure principal component content is very high, purity is higher, and interference impurity is considerably less, is applicable to Industrial Analysis and chemical experiment.
When the combined binder skive adopting above-mentioned cermet combined binder to prepare uses on Digit Control Machine Tool, both maintained the good sharpness of Technique of Vitrified Diamond Wheels, characteristic that self-sharpening is good, there is again the high rigidity of metal anchoring agent diamond wheel, the advantage of good shape retention.During high-rate grinding, processing line speed is 25 ~ 30m/s, maximumly reaches 45m/s, and the abrasive machining wheel of comparing market improves 25 ~ 35%; Single cutting-in amount is 4 ~ 5mm, maximumly reaches 8mm, and the abrasive machining wheel of comparing market improves 100 ~ 150%; Feed speed is 110 ~ 130mm/min, maximumly reaches 150mm/min, and the abrasive machining wheel of comparing market improves 10 ~ 15%; Lathe load is 4 ~ 6A, and the abrasive machining wheel of comparing market reduces by 30 ~ 40%; Finishing gap is 50 ~ 60/time, and the abrasive machining wheel of comparing market improves 25 ~ 50%.Under equal test condition, cermet combined binder skive of the present invention compares the abrasive machining wheel comprehensive process improved efficiency 100 ~ 150% in market.
Therefore, the combined binder skive that the while of the present invention prepared by the above-mentioned cermet combined binder of claimed employing.
A kind of combined binder skive, be made up of grinding wheel base body and the grinding layer be arranged on grinding wheel base body, the preparation method of described combined binder skive comprises the following steps:
(1) 663 bronze powders and ceramic powder are put into vacuum sphere grinding machine, ball milling obtains cermet compound in 20 ~ 30 hours, cermet compound is placed in vacuum tank and leaves standstill after 24 hours, took out 325 mesh standard sieves, and obtained cermet combined binder; Then gained combined binder is inserted in ball mill with diamond abrasive and mix, afterwards by 200 mesh standard sieves, then add pore creating material in combined binder, after 200 mesh standard sieves after mixing, obtain emery wheel compound;
(2) put in a mold by metal dust, cold moudling under 100MPa, obtains metallic matrix; Again the emery wheel compound of step (1) gained slowly to be dropped into equably in the mould configured with matrix and to strike off, inserting in hydraulic press, depanning of colding pressing under 100MPa, obtaining emery wheel and to cold pressing idiosome; Idiosome of being colded pressing by the emery wheel of gained is placed in vacuum hotpressing machine and carries out vacuum heating-press sintering; Sintering temperature curve is: be warming up to 500 DEG C in 0.8 ~ 1 hour, and then temperature-gradient method is to final sintering temperature 700 ~ 800 DEG C, and temperature retention time is 3 ~ 4 hours, and during sintering, pressure is 40MPa; After cooling, depanning obtains abrasive wheel forming body;
Described metal dust is made up of the raw material of following percentage by weight: Cu40 ~ 60%, Fe30 ~ 50%, Sn5 ~ 10%, Ti3 ~ 5%;
(3) the abrasive wheel forming body be up to the standards is machined on lathe and grinding machine the shape and size of drawing requirement, packs after the assay was approved by skive national standard JB/T7425-94, put in storage, obtain combined binder emery wheel.
In technique scheme, the volume ratio of described diamond abrasive, combined binder, pore creating material is (25 ~ 40): (55 ~ 75): (2 ~ 3).
In technique scheme, described pore creating material is alumina hollow ball, and granularity is 40 ~ 50 μm, and effective density is 0.4g/cc, and compression strength is 10.4 ~ 13.6MPa, and thermal conductivity factor is λ=0.043W/mk.
In technique scheme, diamond abrasive answers the diamond that selection intensity is high, self-sharpening is good, and the diamond of various granularity is commercially available, must meet national standard.
Due to the application of such scheme, the present invention compared with prior art has the following advantages:
1, skive prepared by above-mentioned metal-ceramic two kinds of bonding agents is adopted, both the sharpness having maintained Technique of Vitrified Diamond Wheels is good, the characteristic that self-sharpening is good, there is again the advantage that rigidity is high, shape retention is good of metal anchoring agent diamond wheel, meet the instructions for use of multi-shaft linkage numerical control machine.
The skive excellent performance of what 2, the present invention was first public include metal, pottery two kinds of bonding agents, compared with existing abrasive machining wheel, under equal test condition, during high-rate grinding, processing line speed improves 25 ~ 35%; Single cutting-in amount improves 100 ~ 150%; Feed speed improves 10 ~ 30%; Lathe load reduction 30 ~ 40%; Finishing gap improves 25 ~ 50%; Comprehensive process improved efficiency 100 ~ 150%.
3, the preparation technology of combined binder skive disclosed in this invention is simple, raw material is without particular/special requirement, metal opaque matrix in obtained combined binder skive has good heat-sinking capability, good strength and stiffness, and to fill a prescription intact combination with grinding wheel; Be suitable for suitability for industrialized production and application.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet preparing combined binder skive in embodiment;
Fig. 2 is the structural representation of the combined binder skive prepared in embodiment.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described:
Embodiment one: see accompanying drawing 1, prepare combined binder skive, comprise the following steps:
1, ceramic powder is prepared:
Raw material according to following weight percents: silica SiO
255%, boron oxide B
2o
325%, potassium oxide K
2o10%, magnesia MgO7.5%, calcium oxide CaO2.5%, mixed smelting prepares ceramic powder;
Preparation process is:
(1) prepare mixed-powder: by prepare ceramic powder raw material mixing and ball milling after after 325 mesh standard sieves, obtained mixed-powder;
(2) smelting glass: by mixed-powder obtained for step (1) 1700 DEG C of meltings 3 hours in electric furnace, chilling, obtains devitrified glass block;
(3) ceramic powder is prepared: devitrified glass block obtained for step (2) after broken 10 hours, after 325 mesh standard sieves, is namely obtained ceramic powder in ball mill.
2, combined binder skive is prepared:
(1) by the raw material of following weight ratio: 663 bronze powders 60%, ceramic powder 40%, ball milling 20 hours in planetary vacuum sphere grinding machine, compound is placed in vacuum tank and leaves standstill after 24 hours, takes out 325 mesh standard sieves, and obtains combined binder.Gained combined binder and diamond abrasive are placed in planetary vacuum sphere grinding machine to mix, afterwards by 200 mesh standard sieves, then add pore creating material, after 200 mesh standard sieves, obtain emery wheel compound.Wherein, the percent by volume of diamond abrasive, combined binder, pore creating material is respectively: 30.0%, 67.5%, 2.5%.Described diamond is not plated with gold hard rock, and granularity is 170/200, and commercially available, quality meets national standard.Pore creating material is alumina hollow ball, and granularity is 40 ~ 50 μm, and effective density is 0.4g/cc, and compression strength is 10.4 ~ 13.6MPa;
(2) by the raw material components of following percentage by weight: the metal dust matrix mixing of Cu44%, Fe46%, Sn8%, Ti:2% is sieved and is placed on cold moudling in mould, and pressure is 100MPa.Slowly being devoted equably by the compound of step (1) gained in mould that matrix configures again and to strike off, insert in hydraulic press depanning of colding pressing, pressure is 100MPa, obtains emery wheel and to cold pressing idiosome;
(3) the emery wheel idiosome of step (2) gained is placed in vacuum hotpressing machine, carries out vacuum heating-press sintering.During sintering, pressure is 40MPa, and sintering temperature curve is: room temperature to 500 DEG C, heating rate 10 DEG C/min; 500 DEG C are incubated one hour; 500 DEG C to 600 DEG C, heating rate 5 DEG C/min; 600 DEG C are incubated one hour; 600 DEG C to 750 DEG C, heating rate 5 DEG C/min, 750 DEG C are incubated 3 hours; After cooling, depanning obtains abrasive wheel forming body;
(4) the abrasive wheel forming body be up to the standards is machined on lathe and grinding machine the shape and size of drawing requirement, pack after the assay was approved by skive national standard JB/T7425-94, put in storage, obtain the structural representation of combined binder emery wheel as shown in Figure 2.
The single depth of cut of this emery wheel practical application reaches 6mm, and feed speed is 130% of market abrasive machining wheel, and lathe load is 60% of market abrasive machining wheel, and finishing gap is 150% of market abrasive machining wheel, and comprehensive process efficiency improves 150%.
Embodiment two: see accompanying drawing 1, prepares combined binder skive, and technical process is identical with embodiment one, is specially:
1, ceramic powder is prepared:
Raw material according to following weight percents: silica SiO
250%, boron oxide B
2o
327%, potassium oxide K
2o15%, magnesia MgO5%, calcium oxide CaO3%, mixed smelting prepares ceramic powder.
2, combined binder skive is prepared:
(1) by the raw material of following weight ratio: 663 bronze powders 80%, ceramic powder 20%, ball milling 20 hours in planetary vacuum sphere grinding machine, compound is placed in vacuum tank and leaves standstill after 24 hours, takes out 325 mesh standard sieves, and obtains combined binder.Gained combined binder and diamond abrasive are placed in planetary vacuum sphere grinding machine to mix, afterwards by 200 mesh standard sieves, then add pore creating material, after 200 mesh standard sieves, obtain emery wheel compound.Wherein, the percent by volume of diamond abrasive, combined binder, pore creating material is respectively: 28.0%, 69.5%, 2.5%.Described diamond is not plated with gold hard rock, and granularity is 200/230, and commercially available, quality meets national standard;
(2) by the raw material components of following percentage by weight: the metal dust matrix mixing of Cu44%, Fe46%, Sn8%, Ti:2% is sieved and is placed on cold moudling in mould, and pressure is 100MPa.Mixed by the compound of step (1) gained and full drop into equably in the mould that configures and to strike off, insert in hydraulic press depanning of colding pressing, pressure is 100MPa, obtains emery wheel and to cold pressing idiosome;
(3) the emery wheel idiosome of step (2) gained is placed in vacuum hotpressing machine, carries out vacuum heating-press sintering.During sintering, pressure is 40MPa, and sintering temperature curve is: room temperature to 500 DEG C, heating rate 10 DEG C/min; 500 DEG C are incubated one hour; 500 DEG C to 600 DEG C, heating rate 5 DEG C/min; 600 DEG C are incubated one hour; 600 DEG C to 750 DEG C, heating rate 5 DEG C/min, 750 DEG C are incubated 3 hours; After cooling, depanning obtains abrasive wheel forming body;
(4) the abrasive wheel forming body be up to the standards is machined on lathe and grinding machine the shape and size of drawing requirement, pack after the assay was approved by skive national standard JB/T7425-94, put in storage, obtain the structural representation of combined binder emery wheel as shown in Figure 2.
The single depth of cut of this emery wheel practical application reaches 3.8mm, and feed speed is 110% of market abrasive machining wheel, and lathe load is 70% of market abrasive machining wheel, and finishing gap is 125% of market abrasive machining wheel, and comprehensive process efficiency improves 100%.
Embodiment three: see accompanying drawing 1, prepares combined binder skive, and technical process is identical with embodiment one, is specially:
1, ceramic powder is prepared:
Raw material according to following weight percents: silica SiO
245%, boron oxide B
2o
327%, potassium oxide K
2o13%, magnesia MgO10%, calcium oxide CaO5%, mixed smelting prepares ceramic powder.
2, combined binder skive is prepared:
(1) by the raw material of following weight ratio: 663 bronze powders 60%, ceramic powder 40%, ball milling 20 hours in planetary vacuum sphere grinding machine, compound is placed in vacuum tank and leaves standstill after 24 hours, takes out 325 mesh standard sieves, and obtains combined binder.Gained combined binder and diamond abrasive are placed in planetary vacuum sphere grinding machine to mix, afterwards by 200 mesh standard sieves, then add pore creating material, after 200 mesh standard sieves, obtain emery wheel compound.Wherein, the percent by volume of diamond abrasive, combined binder, pore creating material is respectively: 28.0%, 69.5%, 2.5%.Described diamond is not plated with gold hard rock, and granularity is 200/230, and commercially available, quality meets national standard;
(2) by the raw material components of following percentage by weight: the metal dust matrix mixing of Cu44%, Fe46%, Sn8%, Ti:2% is sieved and is placed on cold moudling in mould, and pressure is 100MPa.Mixed by the compound of step (1) gained and full drop into equably in the mould that configures and to strike off, insert in hydraulic press depanning of colding pressing, pressure is 100MPa, obtains emery wheel and to cold pressing idiosome;
(3) the emery wheel idiosome of step (2) gained is placed in vacuum hotpressing machine, carries out vacuum heating-press sintering.During sintering, pressure is 40MPa, and sintering temperature curve is: room temperature to 500 DEG C, heating rate 9 DEG C/min; 500 DEG C are incubated one hour; 500 DEG C to 600 DEG C, heating rate 5 DEG C/min; 600 DEG C are incubated one hour; 600 DEG C to 750 DEG C, heating rate 5 DEG C/min, 750 DEG C are incubated 4 hours; After cooling, depanning obtains abrasive wheel forming body;
(4) the abrasive wheel forming body be up to the standards is machined on lathe and grinding machine the shape and size of drawing requirement, pack after the assay was approved by skive national standard JB/T7425-94, put in storage, obtain the structural representation of combined binder emery wheel as shown in Figure 2.
The single depth of cut of this emery wheel practical application reaches 4.3mm, and feed speed is 120% of market abrasive machining wheel, and lathe load is 70% of market abrasive machining wheel, and finishing gap is 130% of market abrasive machining wheel, and comprehensive process efficiency improves 120%.
Embodiment four: see accompanying drawing 1, prepares combined binder skive, and technical process is identical with embodiment one, is specially:
1, ceramic powder is prepared:
Raw material according to following weight percents: silica SiO
260%, boron oxide B
2o
320%, potassium oxide K
2o10%, magnesia MgO8%, calcium oxide CaO2%, mixed smelting prepares ceramic powder.
2, combined binder skive is prepared:
(1) by the raw material of following weight ratio: 663 bronze powders 70%, ceramic powder 30%, ball milling 25 hours in planetary vacuum sphere grinding machine, compound is placed in vacuum tank and leaves standstill after 24 hours, takes out 325 mesh standard sieves, and obtains combined binder.Gained combined binder and diamond abrasive are placed in planetary vacuum sphere grinding machine to mix, afterwards by 200 mesh standard sieves, then add pore creating material, after 200 mesh standard sieves, obtain emery wheel compound.Wherein, the percent by volume of diamond abrasive, combined binder, pore creating material is respectively: 38.0%, 58.5%, 3.5%.Described diamond is not plated with gold hard rock, and granularity is 200/230, and commercially available, quality meets national standard;
(2) by the raw material components of following percentage by weight: the metal dust matrix mixing of Cu55%, Fe35%, Sn6%, Ti:4% is sieved and is placed on cold moudling in mould, and pressure is 100MPa.Mixed by the compound of step (1) gained and full drop into equably in the mould that configures and to strike off, insert in hydraulic press depanning of colding pressing, pressure is 100MPa, obtains emery wheel and to cold pressing idiosome;
(3) the emery wheel idiosome of step (2) gained is placed in vacuum hotpressing machine, carries out vacuum heating-press sintering.During sintering, pressure is 40MPa, and sintering temperature curve is: room temperature to 500 DEG C, heating rate 10 DEG C/min; 500 DEG C are incubated one hour; 500 DEG C to 600 DEG C, heating rate 5 DEG C/min; 600 DEG C are incubated one hour; 600 DEG C to 750 DEG C, heating rate 5 DEG C/min, 750 DEG C are incubated 3 hours; After cooling, depanning obtains abrasive wheel forming body;
(4) the abrasive wheel forming body be up to the standards is machined on lathe and grinding machine the shape and size of drawing requirement, pack after the assay was approved by skive national standard JB/T7425-94, put in storage, obtain the structural representation of combined binder emery wheel as shown in Figure 2.
The single depth of cut of this emery wheel practical application reaches 4.8mm, and feed speed is 115% of market abrasive machining wheel, and lathe load is 70% of market abrasive machining wheel, and finishing gap is 125% of market abrasive machining wheel, and comprehensive process efficiency improves 130%.
Claims (3)
1. a combined binder skive, be made up of grinding wheel base body and the grinding layer be arranged on grinding wheel base body, it is characterized in that, the preparation method of described combined binder skive comprises the following steps:
(1) 663 bronze powders and ceramic powder are put into vacuum sphere grinding machine, ball milling obtains cermet compound in 20 ~ 30 hours, cermet compound is placed in vacuum tank and leaves standstill after 24 hours, took out 325 mesh standard sieves, and obtained cermet combined binder; Then gained cermet combined binder is inserted in ball mill with diamond abrasive and mix, afterwards by 200 mesh standard sieves, then add pore creating material in cermet combined binder, after 200 mesh standard sieves after mixing, obtain emery wheel compound;
In described cermet combined binder, by weight, 663 bronze powders are 60 ~ 80%, and ceramic powder is 20 ~ 40%;
Described ceramic powder is obtained by the raw material mixed smelting of following weight ratio:
Silica SiO
245 ~ 60%, boron oxide B
2o
320 ~ 30%, potassium oxide K
2o10 ~ 15%, magnesia MgO5 ~ 10%, calcium oxide CaO2 ~ 5%;
(2) put in a mold by metal dust, cold moudling under 100MPa, obtains metallic matrix; Again the emery wheel compound of step (1) gained slowly to be dropped into equably in the mould configured with matrix and to strike off, inserting in hydraulic press, depanning of colding pressing under 100MPa, obtaining emery wheel and to cold pressing idiosome; Idiosome of being colded pressing by the emery wheel of gained is placed in vacuum hotpressing machine and carries out vacuum heating-press sintering; Sintering temperature curve is: be warming up to 500 DEG C in 0.8 ~ 1 hour, and then temperature-gradient method is to final sintering temperature 700 ~ 800 DEG C, and temperature retention time is 3 ~ 4 hours, and during sintering, pressure is 40MPa; After cooling, depanning obtains abrasive wheel forming body;
Described metal dust is made up of the raw material of following percentage by weight: Cu40 ~ 60%, Fe30 ~ 50%, Sn5 ~ 10%, Ti3 ~ 5%;
(3) the abrasive wheel forming body be up to the standards is machined on lathe and grinding machine the shape and size of drawing requirement, packs after the assay was approved by skive machinery industry standard JB/T7425-94, put in storage, obtain combined binder skive.
2. combined binder skive according to claim 1, is characterized in that: the volume ratio of described diamond abrasive, combined binder, pore creating material is (25 ~ 40): (58.5 ~ 75): (2 ~ 3).
3. combined binder skive according to claim 1, is characterized in that: described pore creating material is alumina hollow ball.
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| CN107932347A (en) * | 2017-11-28 | 2018-04-20 | 盐城工学院 | A kind of skive and preparation method thereof |
| CN107932347B (en) * | 2017-11-28 | 2020-05-08 | 盐城工学院 | Diamond grinding wheel and preparation method thereof |
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Effective date of registration: 20170511 Address after: 215121, Suzhou Industrial Park, Jiangsu Province, only 81 New Road Pavilion Patentee after: Jiangsu CY Seiko technology limited liability company Address before: 215121, No. 81, Xin Lu, Suzhou Industrial Park, Suzhou, Jiangsu Patentee before: Suzhou Saili Precision Tools Co.,Ltd. |