CN102814763B - A kind of Polyimide Resin Bonded Diamond Grinding Wheel and preparation method thereof - Google Patents
A kind of Polyimide Resin Bonded Diamond Grinding Wheel and preparation method thereof Download PDFInfo
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- CN102814763B CN102814763B CN201210267147.8A CN201210267147A CN102814763B CN 102814763 B CN102814763 B CN 102814763B CN 201210267147 A CN201210267147 A CN 201210267147A CN 102814763 B CN102814763 B CN 102814763B
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Abstract
The present invention discloses a kind of Polyimide Resin Bonded Diamond Grinding Wheel and preparation method thereof, and it is made up of diamond abrasive 50-60, the white fused alumina abrasive material 5-10 of following weight portion, pomegranate stone sand 5-10, polyimide resin powder 5-15, furfuryl alcohol 2-6, trioctyl trimellitate (TOTM) 1-2, ice crystal 5-10, land plaster 5-10, the siliceous shale powder 2-5 of nanometer, copper powder 2-5.The present invention's bonding agent polyimide resin used has higher mechanical strength, and have excellent heat resistance, the resin wheel durability prepared improves greatly.The present invention with the addition of ceramic material in filler, and its adhesive property is good, makes abrasive material difficult drop-off, and improves heat resistance and the hardness of resin wheel, reduces the crackle that rigidity grinding is formed, thus improves service efficiency and the life-span of resin wheel; Also added copper powder metal dust in addition, rapid heat dissipation, be conducive to dissipating fast the amount of heat that emery wheel is released in cutting process, play the effect reducing cutting temperature.
Description
Technical field
The present invention relates to a kind of Polyimide Resin Bonded Diamond Grinding Wheel and preparation method thereof, belong to finishing technical field.
Background technology
Emery wheel is a topmost class grinding tool in grinding.Emery wheel adds bonding agent in abrasive material, the porous body made through pressed compact, drying and roasting.Emery wheel is the one that in grinding tool, consumption is maximum, use face is the widest, High Rotation Speed during use, can roughly grind, half fine grinding and fine grinding and fluting and cut-out etc. to the cylindrical of metal or non-metal workpiece, inner circle, plane and various profiles etc.Material in order to bonded abrasive in emery wheel claims bonding agent, and the performance of bonding agent determines the intensity of emery wheel, impact resistance, heat resistance and resistance to corrosion.Current bonding agent is mainly divided into four kinds, pottery, resin, rubber and metal, and wherein resinoid bond intensity is high, elasticity is large, shock-resistant, is applicable to the high-speed grinding of v>50m/s, can be made into disc wheel, for slot grinding, cutting etc.Resin wheel is referred to as the emery wheel of bonding agent with resin.
Resin wheel divides by abrasive material and is generally divided into ordinary resin emery wheel and superhard resin wheel.Ordinary resin emery wheel take conventional abrasive materials such as Brown Alundum, Brown Alundum, carborundum as the emery wheel of main grinding composition, and superhard resin wheel take diamond or CBN as the emery wheel of main grinding composition.Resin wheel has that grinding force is little, grinding temperature is low, self-sharpening is good, grinding efficiency advantages of higher, is widely used in the grinding of the hard brittle materials such as carbide alloy, pottery, glass.We know, current resin wheel mainly with phenolic resins as bonding agent, bakelite bonded wheel is poor in grinding process heat resistance, thus constrain service efficiency and the life-span of resin wheel to a great extent, therefore develop the focus that the high resin wheel of a kind of new heat resistance becomes current research.
Summary of the invention
For solving the problem, the invention provides a kind of Polyimide Resin Bonded Diamond Grinding Wheel and preparation method thereof, improve the heat resistance of resin wheel.
The present invention adopts following technical scheme:
A kind of Polyimide Resin Bonded Diamond Grinding Wheel, it is characterized in that, it is made up of the raw material of following weight portion:
Diamond abrasive 50-60, white fused alumina abrasive material 5-10, pomegranate stone sand 5-10, polyimide resin powder 5-15, furfuryl alcohol 2-6, trioctyl trimellitate (TOTM) 1-2, ice crystal 5-10, land plaster 5-10, the siliceous shale powder 2-5 of nanometer, copper powder 2-5.
The weight portion of each raw material components of described Polyimide Resin Bonded Diamond Grinding Wheel is as one of formula each in following table:
| Raw material | Diamond abrasive | White fused alumina abrasive material | Pomegranate stone sand | Polyimide resin powder | Furfuryl alcohol | Trioctyl trimellitate (TOTM) | Ice crystal | Land plaster | The siliceous shale powder of nanometer | Copper powder |
| Formula 1 | 52 | 6 | 5 | 7 | 3 | 1.2 | 6 | 5 | 3 | 3 |
| Formula 2 | 55 | 8 | 7 | 10 | 4 | 1.5 | 7 | 8 | 5 | 4 |
| Formula 3 | 58 | 9 | 9 | 13 | 5 | 1.8 | 8 | 9 | 6 | 5 |
| Formula 4 | 60 | 10 | 10 | 15 | 6 | 2.0 | 10 | 10 | 7 | 6 |
The preparation method of described Polyimide Resin Bonded Diamond Grinding Wheel, is characterized in that comprising the following steps:
(1) mixing material
Raw material is taken by said ratio, then brown corundum abrasive and pomegranate stone sand are put into furfuryl alcohol to infiltrate, abrasive material and furfuryl alcohol will be mixed even, then add polyimide resin powder, trioctyl trimellitate (TOTM), ice crystal, land plaster, the siliceous shale powder of nanometer, copper powder, and be mixed rapidly discharging;
(2) sieve
Being screened 1-2 time by the sieve of mixed material particles by 8-12 mesh sieve hole, is as being used for shaping molding mass by the particle of sieve;
(3) compressing
Take the molding mass of approrpiate wts, be poured in mould and shakeout, make molding mass thickness even, and in molding mass, add reinforced sheet make reinforced sheet flatly completely in burying forming material, adopt the shaping low temperature and pressure temperature of low temperature and pressure to control at 80-90 DEG C, be inverted on glass plate by mould after pressing and scraping and carry out the demoulding;
(4) solidify
The emery wheel base demoulding obtained moves into heating in curing oven makes it solidify.80 DEG C are played temperature, with the speed of intensification per hour 10 DEG C, rise to 160-170 DEG C, are incubated after 4-5 hour and naturally cool, be down to room temperature and namely obtain required emery wheel goods.
Described mould should spread one deck nylon paper at die cavity and be beneficial to the demoulding before putting into molding mass.
Described reinforced sheet is 20-40 stock yarn, 6-8 object fiberglass gridding cloth, and grid cloth two sides scribbles phenolic resins, to increase the caking property with goods.
The present invention has following beneficial effect:
(1) the bonding agent polyimide resin that the present invention is used has higher mechanical strength, has excellent heat resistance, and the resin wheel durability prepared improves greatly;
(2) the present invention with the addition of ceramic material in filler, and its adhesive property is good, makes abrasive material difficult drop-off, and improves heat resistance and the hardness of resin wheel, reduces the crackle that rigidity grinding is formed, thus improves service efficiency and the life-span of resin wheel; Also added copper powder metal dust in addition, rapid heat dissipation, be conducive to dissipating fast the amount of heat that emery wheel is released in cutting process, play the effect reducing cutting temperature.
Detailed description of the invention
It is following that by specific embodiment, the present invention is further illustrated.
Embodiment 1
Polyimide Resin Bonded Diamond Grinding Wheel is made up of the raw material of following weight portion: the siliceous shale powder 3 of diamond abrasive 52, white fused alumina abrasive material 6, pomegranate stone sand 5, polyimide resin powder 7, furfuryl alcohol 3, trioctyl trimellitate (TOTM) 1.2, ice crystal 6, land plaster 5, nanometer, copper powder 2.
The preparation method of Polyimide Resin Bonded Diamond Grinding Wheel comprises the following steps:
(1) mixing material
Raw material is taken by said ratio, then brown corundum abrasive and pomegranate stone sand are put into furfuryl alcohol to infiltrate, abrasive material and furfuryl alcohol will be mixed even, then add polyimide resin powder, epoxidation triglyceride, ice crystal, land plaster, the siliceous shale powder of nanometer, copper powder, and be mixed rapidly discharging;
(2) sieve
Being screened 1-2 time by the sieve of mixed material particles by 8-12 mesh sieve hole, is as being used for shaping molding mass by the particle of sieve;
(3) compressing
Take the molding mass of approrpiate wts, be poured in mould and shakeout, make molding mass thickness even, and in molding mass, add reinforced sheet make reinforced sheet flatly completely in burying forming material, adopt the shaping low temperature and pressure temperature of low temperature and pressure to control at 80-90 DEG C, be inverted on glass plate by mould after pressing and scraping and carry out the demoulding;
(4) solidify
The emery wheel base demoulding obtained moves into heating in curing oven makes it solidify.80 DEG C are played temperature, with the speed of intensification per hour 10 DEG C, rise to 160-170 DEG C, are incubated after 4-5 hour and naturally cool, be down to room temperature and namely obtain required emery wheel goods.
Described mould should spread one deck nylon paper at die cavity and be beneficial to the demoulding before putting into molding mass.
Described reinforced sheet is 20-40 stock yarn, 6-8 object fiberglass gridding cloth, and grid cloth two sides scribbles phenolic resins, to increase the caking property with goods.
Embodiment 2
Polyimide Resin Bonded Diamond Grinding Wheel is made up of the raw material of following weight portion: the siliceous shale powder 5 of diamond abrasive 55, white fused alumina abrasive material 8, pomegranate stone sand 7, polyimide resin powder 10, furfuryl alcohol 4, trioctyl trimellitate (TOTM) 1.5, ice crystal 7, land plaster 8, nanometer, copper powder 4.
The preparation method of Polyimide Resin Bonded Diamond Grinding Wheel is with embodiment 1.
Embodiment 3
Polyimide Resin Bonded Diamond Grinding Wheel is made up of the raw material of following weight portion: the siliceous shale powder 6 of diamond abrasive 58, white fused alumina abrasive material 9, pomegranate stone sand 9, polyimide resin powder 13, furfuryl alcohol 5, trioctyl trimellitate (TOTM) 1.8, ice crystal 8, land plaster 9, nanometer, copper powder 5.
The preparation method of Polyimide Resin Bonded Diamond Grinding Wheel is with embodiment 1.
Embodiment 4
Polyimide Resin Bonded Diamond Grinding Wheel is made up of the raw material of following weight portion: the siliceous shale powder 7 of diamond abrasive 60, white fused alumina abrasive material 10, pomegranate stone sand 10, polyimide resin powder 15, furfuryl alcohol 6, trioctyl trimellitate (TOTM) 2.0, ice crystal 10, land plaster 10, nanometer, copper powder 6.
The preparation method of Polyimide Resin Bonded Diamond Grinding Wheel is with embodiment 1.
Claims (1)
1. a Polyimide Resin Bonded Diamond Grinding Wheel, it is characterized in that, it is made up of the raw material of following weight portion: diamond abrasive 50-60, white fused alumina abrasive material 5-10, pomegranate stone sand 5-10, polyimide resin powder 5-15, furfuryl alcohol 2-6, trioctyl trimellitate (TOTM) 1-2, ice crystal 5-10, land plaster 5-10, the siliceous shale powder 2-5 of nanometer, copper powder 2-5.
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| CN102814763B true CN102814763B (en) | 2016-04-13 |
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| CN103170923B (en) * | 2013-02-22 | 2015-06-24 | 李建波 | Diamond grinding wheel and processing technic thereof |
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| CN114619374B (en) * | 2022-03-08 | 2023-11-14 | 宜兴圆周率陶瓷科技有限公司 | High-wear-resistance grinding wheel based on polyimide resin and preparation method thereof |
| CN115366013B (en) * | 2022-04-02 | 2023-12-08 | 珠海市世创金刚石工具制造有限公司 | Double-horse polyimide resin grinding wheel for dry grinding |
| CN114833733B (en) * | 2022-04-25 | 2024-03-08 | 亳州市鑫磊超硬材料有限责任公司 | Diamond resin grinding wheel and preparation method thereof |
| CN115338783B (en) * | 2022-08-03 | 2024-04-16 | 莆田市屹立砂轮磨具有限公司 | Grinding wheel grinding tool with long service life and preparation process thereof |
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