CN103831740A - Metal ceramic combination binding agent and combination binding agent diamond wheel - Google Patents
Metal ceramic combination binding agent and combination binding agent diamond wheel Download PDFInfo
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- CN103831740A CN103831740A CN201410108373.0A CN201410108373A CN103831740A CN 103831740 A CN103831740 A CN 103831740A CN 201410108373 A CN201410108373 A CN 201410108373A CN 103831740 A CN103831740 A CN 103831740A
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Abstract
The invention belongs to the field of diamond wheels and particularly relates to a metal ceramic combination binding agent and a combination binding agent diamond wheel. The metal ceramic combination binding agent is composed of, by weight, 60%-80% of 663 bronze powder and 20%-40% of ceramic powder. The ceramic powder is homemade and composed of, by weight, 45%-60% of silicon dioxide, 20%-30% of boric oxide, 10%-15% of potassium oxide, 5%-10% of magnesium oxide and 2%-5% of calcium oxide. The combination binding agent diamond wheel is composed of, by volume, 25%-40%of diamond abrasive, 55%-75% of combination binding agent and 2%-3% of pore forming agent. When the diamond wheel made of the metal ceramic combination binding agent is applied to a five-axis cnc machine tool, the good sharpness and the good self-sharpening performance of a ceramic binding agent are kept and the advantages of high rigidity and the good shape-maintaining performance of a metal binding agene are obtained. The comprehensive processing efficiency is improved by 100% to 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 being made up of abrasive material and bonding agent.Taking diamond abrasive as raw material, make bonding agent with metal powder, resin-oatmeal, pottery respectively, 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 scientific and technological development, 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 multi-axis linkage numerical control grinding machine is higher to the performance requirement of skive for numerically control grinder, requires the cutting force of emery wheel good, sharp; Require again the shape retention of emery wheel good, can continue processing; Require simultaneously emery wheel can Nai Gaore, resistance to powerful extruding.
Although traditional resin diamond grinding wheel sharpness is good, self-sharpening is good, and heat resistance is low, wearability deficiency, 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 that continue processing.
Can sharp, self-sharpening and superpower wearability that skive is good be fully improve the key of numerically control grinder working (machining) efficiency; And grinding wheel bond is the key factor that affects skive performance, can not the meet the demands needs of numerically control grinder skive performance of high working (machining) efficiency of traditional single bonding agent.
Along with scientific and technical progress, people deepen gradually to the understanding of metal, macromolecule, inorganic material, and the combined binder being made up of two kinds of emery grinding wheel binders has also obtained everybody concern.
Pottery is combined with metal material, on the basis of vitrified bond, adds metal dust can obtain having concurrently the cermet combined binder of 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
2o 6-8.5%, sodium oxide molybdena Na
2o 2.5-6.5% and barium monoxide BaO 4-9%, copper powder Cu 2-6%, glass putty Sn 0.5-1.5% and zinc powder Zn 0.3-1%; The advantage of this invention is that the CBN emery wheel of making can make roughness value bring up to 0.3 mm by RA0.5 mm compared with the wheel grinding workpiece of vitrified bond making, and flatness can reach 0.8 mm, can reach≤2 mm of the depth of parallelism; Wheel life improves 30%, and single wheel grinding workpiece number is brought up to 12000-15000 by 8000-10000.But the ceramic metal composite bonding agent described in this patent of invention is taking pottery as matrix, a small amount of metal filled as toughness reinforcing phase; It is to design 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 obtaining 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 is the cermet taking metal as matrix, the pottery of controlled micro crystallization is filled as increasing sharp phase, and its sintering process with metallic bond designs, and is applicable to skive; The combined binder skive that adopts this cermet combined binder to prepare has both good sharpness and superpower wearability, thereby 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 made by the raw material mixed smelting of following weight ratio:
Silica SiO
245～60%, boron oxide B
2o
320～30%, potassium oxide K
2o 10～15%, magnesia MgO 5～10%, calcium oxide CaO 2～5%.
663 bronze powder markets in the present invention are on sale, must meet national standard; Microcosmic is dark yellow droplet-like alloy powder, comparatively stable under normal temperature, and actual density is 8.3～8.9 g/cm
3, loose specific weight 2.8～3.1 g/cm
3.In preferred technical scheme, described 663 bronze powders are made up of the raw material of following weight ratio: tin 5～7%, and zinc 5～7%, lead 2～4%, impurity 0～1.3%, surplus is copper.Wherein impurity is non-interference impurity, when 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 preparing after the raw material mixing and ball milling of ceramic powder after 325 mesh standard sieves, make mixed-powder;
(2) smelting glass: the mixed-powder that step (1) is made 1700 DEG C of meltings 3 hours in electric furnace, chilling, obtains devitrified glass block;
(3) prepare ceramic powder: the devitrified glass block that step (2) is made after broken 10 hours, after 325 mesh standard sieves, makes ceramic powder in ball mill.
In preferred technical scheme, described ceramic powder is made by the raw material mixed smelting of following weight ratio:
Silica SiO
255%, boron oxide B
2o
325%, potassium oxide K
2o 10%, magnesia MgO 7.5%, calcium oxide CaO 2.5%.The various raw materials of preparing ceramic powder are all preferably to be analyzed purely, and analytically pure principal component content is very high, purity is higher, disturbs impurity considerably less, is applicable to Industrial Analysis and chemical experiment.
When the combined binder skive that adopts above-mentioned cermet combined binder to prepare uses on Digit Control Machine Tool, both keep the sharpness that Technique of Vitrified Diamond Wheels is good, the characteristic that self-sharpening is good, there is again the high rigidity of metal anchoring agent diamond wheel, good shape retention.When high-rate grinding, processing line speed is 25～30 m/s, and maximum can reach 45 m/s, and the abrasive machining wheel of comparing market improves 25～35%; Single cutting-in amount is 4～5 mm, and maximum can reach 8 mm, and the abrasive machining wheel of comparing market improves 100～150%; Feed speed is 110～130 mm/min, and maximum can reach 150 mm/min, and the abrasive machining wheel of comparing market improves 10～15%; Lathe load is 4～6 A, 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 is compared the abrasive machining wheel comprehensive process improved efficiency 100～150% in market.
Therefore the combined binder skive that, prepared by the above-mentioned cermet combined binder of the present invention's claimed employing simultaneously.
A kind of combined binder skive, is made up of grinding wheel base body and the grinding layer being arranged on grinding wheel base body, and 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 for 20～30 hours, after cermet compound is placed in vacuum tank and leaves standstill 24 hours, take out 325 mesh standard sieves, obtained cermet combined binder; Then gained combined binder is inserted in ball mill and mixed with diamond abrasive, afterwards by 200 mesh standard sieves, then add pore creating material in combined binder, after mixing, after 200 mesh standard sieves, obtain emery wheel compound;
(2) metal dust is placed in mould, cold moudling under 100 MPa, obtains metallic matrix; The emery wheel compound of step (1) gained slowly dropped into equably in the mould configuring with matrix again and strike off, inserting in hydraulic press, the depanning of colding pressing under 100 MPa, obtains the emery wheel idiosome of colding pressing; The emery wheel of the gained idiosome of colding pressing is placed in to vacuum hotpressing machine and carries out vacuum heating-press sintering; Sintering temperature curve is: in 0.8～1 hour, be warming up to 500 DEG C, then temperature-gradient method is to 700～800 DEG C of final sintering temperatures, and temperature retention time is 3～4 hours, and when sintering, pressure is 40 MPa; Cooling rear depanning obtains abrasive wheel forming body;
Described metal dust is made up of the raw material of following percentage by weight: Cu 40～60%, Fe 30～50%, Sn 5～10%, Ti 3～5%;
(3) the abrasive wheel forming body being up to the standards is machined on lathe and grinding machine to the shape and size of drawing requirement, packs after the assay was approved, put in storage by skive national standard JB/T 7425-94, 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 μ m, and effective density is 0.4 g/cc, and compression strength is 10.4 ~ 13.6 MPa, and thermal conductivity factor is λ=0.043 W/mk.
In technique scheme, diamond abrasive is answered the diamond that selection intensity is high, self-sharpening is good, and the diamond market of various granularities is on sale, must meet national standard.
Due to the application of such scheme, the present invention compared with prior art has the following advantages:
1, the skive that adopts two kinds of bonding agents of above-mentioned metal-ceramic to prepare, both kept the sharpness of Technique of Vitrified Diamond Wheels good, the characteristic that self-sharpening is good, the rigidity again with metal anchoring agent diamond wheel is high, shape retention good, meets the instructions for use of multi-shaft linkage numerical control machine.
2, the present invention's disclosed skive excellent performance that includes metal, two kinds of bonding agents of pottery first, compared with existing abrasive machining wheel, under equal test condition, when high-rate grinding, processing line speed improves 25 ~ 35%; Single cutting-in amount improves 100 ~ 150%; Feed speed improves 10 ~ 30%; Lathe load reduces by 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 prepared combined binder skive has good heat-sinking capability, good strength and stiffness, and can with the grinding wheel intact combination of filling a prescription; Be suitable for suitability for industrialized production and application.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of preparing combined binder skive in embodiment;
Fig. 2 is the structural representation of the combined binder skive for preparing in embodiment.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described:
Embodiment mono-: referring to accompanying drawing 1, prepare combined binder skive, comprise the following steps:
1, prepare ceramic powder:
Raw material according to following percentage by weight: silica SiO
255%, boron oxide B
2o
325%, potassium oxide K
2o 10%, magnesia MgO 7.5%, calcium oxide CaO 2.5%, mixed smelting is prepared ceramic powder;
Preparation process is:
(1) prepare mixed-powder: by preparing after the raw material mixing and ball milling of ceramic powder after 325 mesh standard sieves, make mixed-powder;
(2) smelting glass: the mixed-powder that step (1) is made 1700 DEG C of meltings 3 hours in electric furnace, chilling, obtains devitrified glass block;
(3) prepare ceramic powder: the devitrified glass block that step (2) is made after broken 10 hours, after 325 mesh standard sieves, makes ceramic powder in ball mill.
2, prepare combined binder skive:
(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, obtains combined binder.Gained combined binder and diamond abrasive are placed in to planetary vacuum sphere grinding machine and 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 plated with gold hard rock not, and granularity is 170/200, and market is on sale, and quality meets national standard.Pore creating material is alumina hollow ball, and granularity is 40 ~ 50 μ m, and effective density is 0.4 g/cc, and compression strength is 10.4 ~ 13.6 MPa;
(2) by the raw material components of following percentage by weight: Cu 44%, Fe 46%, Sn 8%, the metal dust matrix mixing of Ti:2% is sieved and is placed on cold moudling in mould, and pressure is 100 MPa.The compound of step (1) gained slowly devoted equably in the mould that matrix configures again and strike off, inserting the depanning of colding pressing in hydraulic press, pressure is 100 MPa, obtains the emery wheel idiosome of colding pressing;
(3) the emery wheel idiosome of step (2) gained is placed in to vacuum hotpressing machine, carries out vacuum heating-press sintering.When sintering, pressure is 40 MPa, and sintering temperature curve is: room temperature to 500 DEG C, 10 DEG C/min of heating rate; 500 DEG C are incubated one hour; 500 DEG C to 600 DEG C, 5 DEG C/min of heating rate; 600 DEG C are incubated one hour; 600 DEG C to 750 DEG C, 5 DEG C/min of heating rate, 750 DEG C are incubated 3 hours; Cooling rear depanning obtains abrasive wheel forming body;
(4) the abrasive wheel forming body being up to the standards is machined on lathe and grinding machine to the shape and size of drawing requirement, pack after the assay was approved, put in storage by skive national standard JB/T 7425-94, 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 6 mm, 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 bis-: referring to accompanying drawing 1, prepare combined binder skive, technical process is identical with embodiment mono-, is specially:
1, prepare ceramic powder:
Raw material according to following percentage by weight: silica SiO
250%, boron oxide B
2o
327%, potassium oxide K
2o 15%, magnesia MgO 5%, calcium oxide CaO 3%, mixed smelting is prepared ceramic powder.
2, prepare combined binder skive:
(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, obtains combined binder.Gained combined binder and diamond abrasive are placed in to planetary vacuum sphere grinding machine and 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 plated with gold hard rock not, and granularity is 200/230, and market is on sale, and quality meets national standard;
(2) by the raw material components of following percentage by weight: Cu 44%, Fe 46%, Sn 8%, the metal dust matrix mixing of Ti:2% is sieved and is placed on cold moudling in mould, and pressure is 100 MPa.Drop into equably in the mould configuring and strike off mixed full the compound of step (1) gained again, inserting the depanning of colding pressing in hydraulic press, pressure is 100 MPa, obtains the emery wheel idiosome of colding pressing;
(3) the emery wheel idiosome of step (2) gained is placed in to vacuum hotpressing machine, carries out vacuum heating-press sintering.When sintering, pressure is 40 MPa, and sintering temperature curve is: room temperature to 500 DEG C, 10 DEG C/min of heating rate; 500 DEG C are incubated one hour; 500 DEG C to 600 DEG C, 5 DEG C/min of heating rate; 600 DEG C are incubated one hour; 600 DEG C to 750 DEG C, 5 DEG C/min of heating rate, 750 DEG C are incubated 3 hours; Cooling rear depanning obtains abrasive wheel forming body;
(4) the abrasive wheel forming body being up to the standards is machined on lathe and grinding machine to the shape and size of drawing requirement, pack after the assay was approved, put in storage by skive national standard JB/T 7425-94, 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 tri-: referring to accompanying drawing 1, prepare combined binder skive, technical process is identical with embodiment mono-, is specially:
1, prepare ceramic powder:
Raw material according to following percentage by weight: silica SiO
245%, boron oxide B
2o
327%, potassium oxide K
2o 13%, magnesia MgO 10%, calcium oxide CaO 5%, mixed smelting is prepared ceramic powder.
2, prepare combined binder skive:
(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, obtains combined binder.Gained combined binder and diamond abrasive are placed in to planetary vacuum sphere grinding machine and 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 plated with gold hard rock not, and granularity is 200/230, and market is on sale, and quality meets national standard;
(2) by the raw material components of following percentage by weight: Cu 44%, Fe 46%, Sn 8%, the metal dust matrix mixing of Ti:2% is sieved and is placed on cold moudling in mould, and pressure is 100 MPa.Drop into equably in the mould configuring and strike off mixed full the compound of step (1) gained again, inserting the depanning of colding pressing in hydraulic press, pressure is 100 MPa, obtains the emery wheel idiosome of colding pressing;
(3) the emery wheel idiosome of step (2) gained is placed in to vacuum hotpressing machine, carries out vacuum heating-press sintering.When sintering, pressure is 40 MPa, and sintering temperature curve is: room temperature to 500 DEG C, 9 DEG C/min of heating rate; 500 DEG C are incubated one hour; 500 DEG C to 600 DEG C, 5 DEG C/min of heating rate; 600 DEG C are incubated one hour; 600 DEG C to 750 DEG C, 5 DEG C/min of heating rate, 750 DEG C are incubated 4 hours; Cooling rear depanning obtains abrasive wheel forming body;
(4) the abrasive wheel forming body being up to the standards is machined on lathe and grinding machine to the shape and size of drawing requirement, pack after the assay was approved, put in storage by skive national standard JB/T 7425-94, 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 4.3 mm, 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 tetra-: referring to accompanying drawing 1, prepare combined binder skive, technical process is identical with embodiment mono-, is specially:
1, prepare ceramic powder:
Raw material according to following percentage by weight: silica SiO
260%, boron oxide B
2o
320%, potassium oxide K
2o 10%, magnesia MgO 8%, calcium oxide CaO 2%, mixed smelting is prepared ceramic powder.
2, prepare combined binder skive:
(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, obtains combined binder.Gained combined binder and diamond abrasive are placed in to planetary vacuum sphere grinding machine and 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 plated with gold hard rock not, and granularity is 200/230, and market is on sale, and quality meets national standard;
(2) by the raw material components of following percentage by weight: Cu 55%, Fe 35%, Sn 6%, the metal dust matrix mixing of Ti:4% is sieved and is placed on cold moudling in mould, and pressure is 100 MPa.Drop into equably in the mould configuring and strike off mixed full the compound of step (1) gained again, inserting the depanning of colding pressing in hydraulic press, pressure is 100 MPa, obtains the emery wheel idiosome of colding pressing;
(3) the emery wheel idiosome of step (2) gained is placed in to vacuum hotpressing machine, carries out vacuum heating-press sintering.When sintering, pressure is 40 MPa, and sintering temperature curve is: room temperature to 500 DEG C, 10 DEG C/min of heating rate; 500 DEG C are incubated one hour; 500 DEG C to 600 DEG C, 5 DEG C/min of heating rate; 600 DEG C are incubated one hour; 600 DEG C to 750 DEG C, 5 DEG C/min of heating rate, 750 DEG C are incubated 3 hours; Cooling rear depanning obtains abrasive wheel forming body;
(4) the abrasive wheel forming body being up to the standards is machined on lathe and grinding machine to the shape and size of drawing requirement, pack after the assay was approved, put in storage by skive national standard JB/T 7425-94, 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 4.8 mm, 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 (7)
1. for the preparation of a cermet combined binder for skive, it is characterized in that, formed by the raw material of following weight ratio:
663 bronze powders 60～80%
Ceramic powder 20～40%
Described ceramic powder is made by the raw material mixed smelting of following weight ratio:
Silica SiO
245～60%, boron oxide B
2o
320～30%, potassium oxide K
2o 10～15%, magnesia MgO 5～10%, calcium oxide CaO 2～5%.
2. according to claim 1 for the preparation of the cermet combined binder of skive, it is characterized in that: described 663 bronze powders are made up of the raw material of following weight ratio: tin 5～7%, zinc 5～7%, lead 2～4%, impurity 0～1.3%, surplus is copper.
3. according to claim 1 for the preparation of the cermet combined binder of skive, it is characterized in that: described ceramic powder is made by the raw material mixed smelting of following weight ratio:
Silica SiO
255%, boron oxide B
2o
325%, potassium oxide K
2o 10%, magnesia MgO 7.5%, calcium oxide CaO 2.5%.
4. according to claim 1 for the preparation of the cermet combined binder of skive, it is characterized in that: the preparation method of described ceramic powder is:
First by preparing after the raw material mixing and ball milling of ceramic powder after 325 mesh standard sieves, make mixed-powder; Again by mixed-powder in 1700 DEG C of meltings 3 hours, chilling, obtains devitrified glass block; Finally devitrified glass block after broken 10 hours, after 325 mesh standard sieves, is made to ceramic powder in ball mill.
5. a combined binder skive, is made up of grinding wheel base body and the grinding layer being 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 described in claim 1 are put into vacuum sphere grinding machine, ball milling obtains cermet compound for 20～30 hours, after cermet compound is placed in vacuum tank and leaves standstill 24 hours, take out 325 mesh standard sieves, obtained cermet combined binder; Then gained combined binder is inserted in ball mill and mixed with diamond abrasive, afterwards by 200 mesh standard sieves, then add pore creating material in combined binder, after mixing, after 200 mesh standard sieves, obtain emery wheel compound;
(2) metal dust is placed in mould, cold moudling under 100 MPa, obtains metallic matrix; The emery wheel compound of step (1) gained slowly dropped into equably in the mould configuring with matrix again and strike off, inserting in hydraulic press, the depanning of colding pressing under 100 MPa, obtains the emery wheel idiosome of colding pressing; The emery wheel of the gained idiosome of colding pressing is placed in to vacuum hotpressing machine and carries out vacuum heating-press sintering; Sintering temperature curve is: in 0.8～1 hour, be warming up to 500 DEG C, then temperature-gradient method is to 700～800 DEG C of final sintering temperatures, and temperature retention time is 3～4 hours, and when sintering, pressure is 40 MPa; Cooling rear depanning obtains abrasive wheel forming body;
Described metal dust is made up of the raw material of following percentage by weight: Cu 40～60%, Fe 30～50%, Sn 5～10%, Ti 3～5%;
(3) the abrasive wheel forming body being up to the standards is machined on lathe and grinding machine to the shape and size of drawing requirement, packs after the assay was approved, put in storage by skive national standard JB/T 7425-94, obtain combined binder emery wheel.
6. combined binder skive according to claim 5, is characterized in that: the volume ratio of described diamond abrasive, combined binder, pore creating material is (25～40): (55～75): (2～3).
7. combined binder skive according to claim 5, is characterized in that: described pore creating material is alumina hollow ball.
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