CN101913847B - Ceramic part of quick-acting fuse and preparation method thereof - Google Patents
Ceramic part of quick-acting fuse and preparation method thereof Download PDFInfo
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- CN101913847B CN101913847B CN2010102604154A CN201010260415A CN101913847B CN 101913847 B CN101913847 B CN 101913847B CN 2010102604154 A CN2010102604154 A CN 2010102604154A CN 201010260415 A CN201010260415 A CN 201010260415A CN 101913847 B CN101913847 B CN 101913847B
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- 238000002360 preparation method Methods 0.000 title claims abstract description 29
- 239000000919 ceramic Substances 0.000 title claims abstract description 28
- 239000002994 raw material Substances 0.000 claims abstract description 50
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 claims abstract description 34
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 31
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910021532 Calcite Inorganic materials 0.000 claims abstract description 21
- 238000000498 ball milling Methods 0.000 claims abstract description 21
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000000454 talc Substances 0.000 claims abstract description 21
- 235000012222 talc Nutrition 0.000 claims abstract description 21
- 229910052623 talc Inorganic materials 0.000 claims abstract description 21
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims abstract description 19
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims abstract description 19
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims abstract description 19
- 239000000843 powder Substances 0.000 claims abstract description 14
- 238000003825 pressing Methods 0.000 claims abstract description 13
- 238000010079 rubber tapping Methods 0.000 claims abstract description 10
- 238000005553 drilling Methods 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 239000004615 ingredient Substances 0.000 claims description 25
- 238000005469 granulation Methods 0.000 claims description 21
- 230000003179 granulation Effects 0.000 claims description 21
- 239000003595 mist Substances 0.000 claims description 21
- 238000010792 warming Methods 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 20
- 239000002689 soil Substances 0.000 claims description 18
- 238000009413 insulation Methods 0.000 claims description 16
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 claims description 12
- 238000000465 moulding Methods 0.000 claims description 12
- 239000002002 slurry Substances 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 6
- 235000019359 magnesium stearate Nutrition 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- AYJRCSIUFZENHW-DEQYMQKBSA-L barium(2+);oxomethanediolate Chemical compound [Ba+2].[O-][14C]([O-])=O AYJRCSIUFZENHW-DEQYMQKBSA-L 0.000 claims description 4
- 238000010304 firing Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 10
- 238000004512 die casting Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000000440 bentonite Substances 0.000 abstract 1
- 229910000278 bentonite Inorganic materials 0.000 abstract 1
- 239000004927 clay Substances 0.000 abstract 1
- 238000007599 discharging Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 229910052594 sapphire Inorganic materials 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 27
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000001035 drying Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000001746 injection moulding Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 238000000748 compression moulding Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000002594 sorbent Substances 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000015895 biscuits Nutrition 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000001192 hot extrusion Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
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- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention relates to a ceramic part of a quick-acting fuse and a preparation method thereof. The ceramic part of the invention comprises the following components as raw materials in percentage by weight: 60-70% of alpha-Al2O3 micro powder, 20-30% of Suzhou clay, 2-6% of bentonite, 2-6% of calcite, 3-8% of barium carbonate and 1-5% of talcum, and based on the total weight of the raw materials,3-5% of polyvinyl alcohol, 3-5% of sodium hexametaphosphate and 80-85% of water are added. The preparation method comprises the following steps: ball milling, granulating, forming, biscuiting, drilling and tapping, burning and the like, wherein in the step of forming, an automatic double-side press machine is adopted for pressing, the pressure is 6-7MPa, the dwelling time is 4-7 seconds, and a blank of which the density is 1.9-2.0g/cm<3> is obtained; and in the step of burning, loading the blank into a furnace, heating to 1420 DEG C, insulating for 3h, cooling and discharging from the furnace. The product of the invention has the tensile pressure of 40-41MPa and the density of 3.0-3.10g/cm<3>. The product of the invention can substitute for the A-95 ceramics of a higher grade, and compared with a hot die-casting method, the invention has the yield of higher than 95%, lower cost, wide range of application and better economic and social benefits.
Description
Technical field
The present invention relates to a kind of mesolow quick-acting fuse accessory, particularly relate to a kind of quick-acting fuse ceramic part and preparation method thereof.
Background technology
The mesolow quick-acting fuse is as a kind of short-circuit protector, uses quite extensively, and wherein the ceramic insulation shell is the main parts size of this product, because mostly this ceramic member is square, there are wire guide and a plurality of screw pilot hole in the surface.For many years, traditional hot die-casting molding or dry-pressing one-shot forming technique are adopted in the production of porcelain spare always.The hot die-casting molding outward appearance is coarse, and the finished product rate is low, and production cost is very high, shrinks instability, and quality can't guarantee; Though the dry-pressing one-shot forming technique improves on the basis of hot die-casting molding, because the product structure update is very frequent, its mould that uses is one-time-shaped mould; Be to have 8-16 bar screw on the mould, open mould after the compression moulding, unclamp all screws and just can make product stripping; Its technology mold drops into more, and the screw distortion seriously causes the screw replacing very frequent under pressure; Production efficiency is low simultaneously; Input cost is higher, and most of link armrest work industries are not suitable for mass production.
Summary of the invention
The technical problem that the present invention will solve: a kind of better performances, cost is low, yield rate is high ceramic part of quick-acting fuse are provided;
The preparation method of a kind of dry-press process, time saving and energy saving, ceramic part of quick-acting fuse that energy consumption is low also is provided.
Technical scheme of the present invention:
A kind of quick-acting fuse is used ceramic member, is made up of following weight percentages: major ingredient α-Al
2O
3Micro mist 60-70%; Auxiliary material Suzhou soil 20-30%, wilkinite 2-6%, calcite 2-6%, barium carbonate 3-8%, living talcum 1-5%; Major ingredient, auxiliary material gross weight 100% add the polyvinyl alcohol solution of above-mentioned major ingredient, auxiliary material gross weight 3-5%, the sodium hexametaphosphate of 3-5% and the water of 80-85%.
Said raw material is preferably: α-Al
2O
3Micro mist 63-65%, Suzhou soil 22-24%, wilkinite 2-4%, calcite 2-4%, barium carbonate 3-6%, living talcum 1-3%.
Said α-Al
2O
3The micro mist granularity is the 5-10 micron, 60 microns of Suzhou grogs degree, and wilkinite granularity 60-80 micron, calcite granularity 60-80 micron, barium carbonate granularity 60-80 micron is given birth to talcum granularity 60-80 micron.
The mass concentration of Z 150PH is 6-10% in the said polyvinyl alcohol solution.
The preparation method of described ceramic part of quick-acting fuse may further comprise the steps:
(1) ball milling takes by weighing raw material, the α-Al with 50%
2O
3The micro mist major ingredient drops into ball mill, drops into auxiliary material Suzhou soil, wilkinite, calcite, barium carbonate, living talcum and polyvinyl alcohol solution, sodium hexametaphosphate then, drops into the residue major ingredient again, adds water for ball milling, ball milling to slurry granularity D
50Value is the 3.5-4.5 micron;
(2) granulation with slurries filtration, deironing after mist projection granulating, dry back granulation powder water cut is controlled at below the 0.8-1.0%;
(3) moulding adds the Magnesium Stearate with respect to said major ingredient, auxiliary material gross weight 0.4-0.5% to said granulation powder, and uniform mixing 30-40min adds sintered-carbide die; Adopt automatic double-sided pressing machine compacting; Pressure is 6-7MPa, and pressurize 4-7 second, obtaining density is 1.9-2.0 g/cm
3Blank;
(4) biscuiting is heated to said blank shove charge 950 ℃ and fires, and insulation 1h cooling is come out of the stove;
(5) drilling and tapping fixes 90 on the rig board
0Strongback is placed on blank on the strongback, adopts multi-shaft interlocked drilling tapping machine, once gets out all holes on the tapping blank;
(6) fire the blank shove charge, be heated to 1420 ℃, insulation 3h, cooling kiln discharge.
Drum's speed of rotation is 15-17r/min during said ball milling, ball milling time 16-20h.
The prilling tower inlet temperature is 390-400 ℃ during said granulation, and temperature out is 65-75 ℃.
Temperature curve is designed to during said biscuiting: blank is warming up to 300 ℃ by room temperature through 1h, is warming up to 600 ℃ through 2h, is warming up to 950 ℃ through 3h, 950 ℃ of insulation 1h; Be cooled to 600 ℃ through 3h then, naturally cool to 300 ℃.
Temperature curve is designed to during said firing: blank is warming up to 300 ℃ by room temperature through 3h, is warming up to 600 ℃ through 2h, is warming up to 950 ℃ through 3h again, 950 ℃ of insulation 1h; Be warming up to 1420 ℃ through 3h, at 1420 ℃ of insulation 3h; Be cooled to 950 ℃ through 5h then, be cooled to 650 ℃, naturally cool to 300 ℃ then through 3h.
Positive beneficial effect of the present invention:
(1) good product performance of the present invention.Adopt the ball milling granulation to prepare raw material, prescription is reasonable, and consumption is fastidious.Anti-pressure 40-41 MPa, the density 3.0-3.10 g/cm of opening of product
3, performance is superior to like product.
(2) yield rate of product of the present invention is higher.Adopt automatic double-sided press compression moulding, precision is high, and speed is fast; Can work continuously, in raw material, add an amount of stearic acid release agent magnesium during moulding, the blank intensity of extrusion is high; The smooth surface zero defect, the mechanical workouts such as punching tapping of suitable any position after the dehydration biscuiting; Simultaneously unique prescription makes the sintered surface broad of blank, and shrinking percentage is less, does not ftracture in the sintering process, indeformable, shrinks high conformity, and yield rate can reach more than 95%, and the yield rate of traditional hot extrusion process is merely 30-60%.
(3) technology cost of the present invention is lower.Blank was once accomplished without the manual grinding repaired biscuit when the present invention was dry-pressing formed, saved a large amount of artificial inputs; And the injection moulding rule need be the smoothing blank of polishing after moulding and the dewaxing, time-consuming taking a lot of work.
Process energy consumption of the present invention is lower.With 2M
3The shuttle-type stove is an example, and dry-pressing formed back biscuiting only needs about 10h, and every kiln gas consumption is 300M
3And the every kiln dewaxing of injection moulding biscuiting needs 48h, and every kiln gas consumption is 800M
3Simultaneously, the overlapping non-packed biscuiting of dry-pressing blank, the every kiln of blank tonburden can reach about 3500; And injection moulding must be contained in blank in the sorbent material in the saggar and carry out (sorbent material is a kind of commercial alumina powder, is used to absorb the paraffin that blank is deviate from, and volatilization at high temperature), the every kiln of same kiln 500 blanks of less than of can only packing into.It is thus clear that power cost advantage of the present invention is bigger, whole energy consumption is lower.
(4) the inventive method is compared with traditional hot die-casting molding technology, neat appearance after the product dry-pressing, and deflection is less, no apparent pore, inclusion-free, but mould one module multiple usages; And injection moulding product void content is higher, and appearance is not attractive in appearance, and the anti-little and complex process of pressure, the long flow path opened be prone to sneak into impurity, and mould fixed.
(5) owing to adopt unique formula and sintering process, its product performance index has reached higher level, in the fusible cut-out field, can replace the higher A-95 pottery of present class fully, and production cost obviously reduces.
(6) product performance of the present invention are better, and cost is low, and are applied widely, have better economic and social benefit.
Four, embodiment:
Embodiment 1: a kind of ceramic part of quick-acting fuse, form by following weight percentages:
α-Al
2O
3Micro mist 60-70%, Suzhou soil 20-30%, wilkinite 2-6%, calcite 2-6%, barium carbonate 3-8%, living talcum 1-5%; The above-mentioned raw materials gross weight is 100%, adds the polyvinyl alcohol solution that accounts for above-mentioned raw materials gross weight 3-5%, the sodium hexametaphosphate of 3-5%, the water of 80-85%.Wherein the polyvinyl alcohol solution mass concentration is 6-10%.
Granularity requirements: major ingredient α-Al
2O
3Micro mist 5-10 micron, 60 microns in auxiliary material Suzhou soil, all the other auxiliary materials such as wilkinite, calcite, barium carbonate, living talcum granularity are the 60-80 micron.
The preparation method of ceramic part of quick-acting fuse may further comprise the steps:
(1) ball milling takes by weighing raw material by proportioning, earlier with α-Al of 50%
2O
3Major ingredient drops into ball mill; Drop into auxiliary material (Suzhou soil, wilkinite, calcite, barium carbonate, living talcum) and polyvinyl alcohol solution, sodium hexametaphosphate; Drop into the residue major ingredient again, add water for ball milling 16-20h, drum's speed of rotation 15-17r/min; Expect during ball milling: water: the ratio of abrading-ball is 1:0.8:2.5, slurry granularity D
50Value is the 3.5-4.5 micron;
(2) granulation is carried out drying after with slurries filtration, deironing, and the prilling tower inlet temperature is 390-400 ℃, and temperature out is 65-75 ℃, and the granulation powder water ratio that obtains after the drying is controlled at 0.8-1.0% (quality);
(3) moulding adds the Magnesium Stearate with respect to major ingredient, auxiliary material total amount 0.4-0.5% in the granulation powder, mixes 30-40min, adds sintered-carbide die and goes into mould; Adopt automatic double-sided pressing machine compacting; Pressure is 6-7MPa, and pressurize 4-7 second, obtaining density is 1.9-2.0 g/cm
3Blank;
(4) biscuiting is heated to the blank shove charge 950 ℃ and fires, and insulation 1h postcooling is come out of the stove;
Biscuiting temperature design: be warming up to 300 ℃ by room temperature through 1h, be warming up to 600 ℃, be warming up to 950 ℃, 950 ℃ of insulation 1h through 3h through 2h; Be cooled to 600 ℃ through 3h then, naturally cool to 300 ℃ at last;
(5) drilling and tapping fixes 90 on the rig board
0Strongback is placed on blank on the strongback, adopts all holes of a tapping blank of interlock punch.Because blank strength is high, belongs to particle packing, during common bit bore, the drilling area is big; Bit wear is comparatively serious, drill sharpening or change comparatively frequently in the production, and it is the auger bit of cutting edge that the present invention adopts cubic boron nitride; This drill bit hardness is high, and wear resistance is good, can improve drilling efficiency; Screw tap adopts the special nonstandard tapper tap of TS;
(6) fire the blank shove charge, be heated to 1420 ℃ and fire, insulation 3h postcooling is come out of the stove;
The firing temperature curve design is: be warming up to 300 ℃ by room temperature through 3h, be warming up to 600 ℃ through 2h, be warming up to 950 ℃ through 3h again, at 950 ℃ of insulation 1h; Be warming up to 1420 ℃ through 3h, at 1420 ℃ of insulation 3h; Be cooled to 950 ℃ through 5h then, be cooled to 650 ℃, naturally cool to 300 ℃ then, kiln discharge through 3h;
Adopt shuttle kiln when firing, pull out kiln car when product is cooled to 300 ℃, cool off 2h at normal temperatures, take off product, pack warehouse-in through after the assay was approved.
Embodiment 2: ceramic part of quick-acting fuse and preparation method
Raw material is formed: α-Al
2O
3Micro mist 70%, Suzhou soil 20%, wilkinite 4%, calcite 2%, barium carbonate 3%, living talcum 1%, the above-mentioned raw materials gross weight is 100%, adds the polyvinyl alcohol solution that accounts for above-mentioned raw materials gross weight 4%, 3% sodium hexametaphosphate, 85% water.Wherein polyvinyl alcohol solution concentration is 6%.Raw material granularity requires with example 1.
Preparation process: (1) ball milling takes by weighing raw material by proportioning, earlier with α-Al of 50%
2O
3Major ingredient drops into auxiliary material and polyvinyl alcohol solution, sodium hexametaphosphate after dropping into ball mill then, drops into the residue major ingredient again, adds water for ball milling 16-18h, drum's speed of rotation 15-17r/min, slurry granularity D
50Value 3.5-4.5 micron;
(2) granulation is carried out drying after with slurries filtration, deironing, and the prilling tower inlet temperature is 390-400 ℃, and temperature out is 65-75 ℃, and dry back granulation powder water ratio is controlled at 0.8-1.0%;
(3) moulding adds the Magnesium Stearate with respect to major ingredient, auxiliary material total amount 0.4% in the granulation powder, mixes 30-40min, adds sintered-carbide die and goes into mould; Adopt automatic double-sided pressing machine compacting; Pressure is 6-7MPa, and pressurize 4-7 second, obtaining density is 1.9-2.0 g/cm
3Blank.
All the other steps no longer repeat with example 1.
Embodiment 3: ceramic part of quick-acting fuse and preparation method
Raw material is formed: α-Al
2O
3Micro mist 60%, Suzhou soil 25%, wilkinite 3%, calcite 2%, barium carbonate 8%, living talcum 2%, the above-mentioned raw materials gross weight is 100%, adds the polyvinyl alcohol solution that accounts for above-mentioned raw materials gross weight 5%, 3% sodium hexametaphosphate, 83% water.Wherein the polyvinyl alcohol solution mass concentration is 8%.Raw material granularity requires with example 1.
Preparation process: (1) ball milling takes by weighing raw material by proportioning, earlier with α-Al of 50%
2O
3Major ingredient drops into auxiliary material and polyvinyl alcohol solution, sodium hexametaphosphate after dropping into ball mill then, drops into the residue major ingredient again, adds water for ball milling 20h, drum's speed of rotation 15-17r/min, slurry granularity D
50Value 3.5-4.5 micron;
(2) granulation is carried out drying after with slurries filtration, deironing, and the prilling tower inlet temperature is 390 ℃, and temperature out is 65 ℃, and dry back granulation powder water ratio is controlled at 0.8 following %;
(3) moulding adds the Magnesium Stearate with respect to major ingredient, auxiliary material total amount 0.5% in the granulation powder, mixes 30-40min, adds sintered-carbide die and goes into mould; Adopt automatic double-sided pressing machine compacting; Pressure is 6-7MPa, and pressurize 4-7 second, obtaining density is 1.9-2.0 g/cm
3Blank.
All the other steps no longer repeat with example 1.
Embodiment 4: ceramic part of quick-acting fuse and preparation method
Raw material is formed: α-Al
2O
3Micro mist 62%, Suzhou soil 23%, wilkinite 6%, calcite 3%, barium carbonate 3%, living talcum 3%, the above-mentioned raw materials gross weight is 100%, adds the polyvinyl alcohol solution that accounts for above-mentioned raw materials gross weight 4%, 4% sodium hexametaphosphate, 82% water.Wherein the polyvinyl alcohol solution mass concentration is 10%.Raw material granularity requires with example 1.
The preparation method: (1) ball milling takes by weighing raw material by proportioning, earlier with α-Al of 50%
2O
3Major ingredient drops into auxiliary material and polyvinyl alcohol solution, sodium hexametaphosphate after dropping into ball mill then, drops into the residue major ingredient again, adds water for ball milling 18h, drum's speed of rotation 15-17r/min, slurry granularity D
50Value 3.5-4.5 micron;
(2) granulation is carried out drying after with slurries filtration, deironing, and the prilling tower inlet temperature is 395 ℃, and temperature out is 70 ℃, and dry back granulation powder water ratio is controlled at below 1.0%;
(3) moulding adds the Magnesium Stearate with respect to major ingredient, auxiliary material total amount 0.45% in the granulation powder, mixes 30-40min, adds sintered-carbide die and goes into mould; Adopt automatic double-sided pressing machine compacting; Pressure is 6.5MPa, and pressurize 4-7 second, obtaining density is 1.9-2.0 g/cm
3Blank.
All the other steps no longer repeat with example 1.
Embodiment 5: ceramic part of quick-acting fuse and preparation method
Raw material is formed: α-Al
2O
3Micro mist 66%, Suzhou soil 22%, wilkinite 3%, calcite 3%, barium carbonate 5%, living talcum 1%, the above-mentioned raw materials gross weight is 100%, adds the polyvinyl alcohol solution that accounts for above-mentioned raw materials gross weight 4%, 5% sodium hexametaphosphate, 84% water.Wherein polyvinyl alcohol solution concentration is 7%.
Raw material granularity requirement and preparation method no longer repeat with embodiment 1.
Embodiment 6: ceramic part of quick-acting fuse and preparation method
Raw material is formed: α-Al
2O
3Micro mist 63%, Suzhou soil 24%, wilkinite 4%, calcite 4%, barium carbonate 3%, living talcum 2%, the above-mentioned raw materials gross weight is 100%, adds the polyvinyl alcohol solution that accounts for above-mentioned raw materials gross weight 3%, 4% sodium hexametaphosphate, 80% water.Wherein polyvinyl alcohol solution concentration is 8%.
Raw material granularity requirement and preparation method no longer repeat with embodiment 1.
Embodiment 7: ceramic part of quick-acting fuse and preparation method
Raw material is formed: α-Al
2O
3Micro mist 65%, Suzhou soil 22%, wilkinite 2%, calcite 2%, barium carbonate 6%, living talcum 3%, the above-mentioned raw materials gross weight is 100%, adds the polyvinyl alcohol solution that accounts for above-mentioned raw materials gross weight 5%, 3% sodium hexametaphosphate, 80% water.Wherein the polyvinyl alcohol solution mass concentration is 6%.
Raw material granularity requirement and preparation method no longer repeat with embodiment 1.
Embodiment 8: ceramic part of quick-acting fuse and preparation method
Raw material is formed: α-Al
2O
3Micro mist 64%, Suzhou soil 23%, wilkinite 3%, calcite 3%, barium carbonate 5%, living talcum 2%, the above-mentioned raw materials gross weight is 100%, adds the polyvinyl alcohol solution that accounts for above-mentioned raw materials gross weight 4%, 4% sodium hexametaphosphate, 80% water.Wherein polyvinyl alcohol solution concentration is 6%.
Raw material granularity requirement and preparation method no longer repeat with embodiment 1.
Embodiment 9: ceramic part of quick-acting fuse and preparation method
Raw material is formed: α-Al
2O
3Micro mist 64%, Suzhou soil 22%, wilkinite 4%, calcite 4%, barium carbonate 3%, living talcum 3%, the above-mentioned raw materials gross weight is 100%, adds the polyvinyl alcohol solution that accounts for above-mentioned raw materials gross weight 4%, 5% sodium hexametaphosphate, 82% water.Wherein polyvinyl alcohol solution concentration is 7%.
Raw material granularity requirement and preparation method no longer repeat with embodiment 1.
Embodiment 10: ceramic part of quick-acting fuse and preparation method
Raw material is formed: α-Al
2O
3Micro mist 65%, Suzhou soil 23%, wilkinite 2%, calcite 2%, barium carbonate 6%, living talcum 2%, the above-mentioned raw materials gross weight is 100%, adds the polyvinyl alcohol solution that accounts for above-mentioned raw materials gross weight 4%, 4% sodium hexametaphosphate, 81% water.Wherein polyvinyl alcohol solution concentration is 6%.
Raw material granularity requirement and preparation method no longer repeat with embodiment 1.
Claims (7)
1. a quick-acting fuse is used ceramic member, it is characterized in that: be made up of following weight percentages: major ingredient α-Al
2O
3Micro mist 60-70%; Auxiliary material Suzhou soil 20-30%, wilkinite 2-6%, calcite 2-6%, barium carbonate 3-8%, living talcum 1-5%; Major ingredient, auxiliary material gross weight 100% add the polyvinyl alcohol solution of above-mentioned major ingredient, auxiliary material gross weight 3-5%, the Sodium hexametaphosphate 99 of 3-5% and the water of 80-85%; Said α-Al
2O
3The micro mist granularity is the 5-10 micron.
2. quick-acting fuse according to claim 1 is used ceramic member, it is characterized in that: said raw material is preferably: α-Al
2O
3Micro mist 63-65%, Suzhou soil 22-24%, wilkinite 2-4%, calcite 2-4%, barium carbonate 3-6%, living talcum 1-3%.
3. quick-acting fuse according to claim 1 and 2 is used ceramic member, it is characterized in that: 60 microns of said Suzhou grogs degree, and wilkinite granularity 60-80 micron, calcite granularity 60-80 micron, barium carbonate granularity 60-80 micron is given birth to talcum granularity 60-80 micron.
4. quick-acting fuse according to claim 1 and 2 is used ceramic member, it is characterized in that: the mass concentration of Z 150PH is 6-10% in the said polyvinyl alcohol solution.
5. the described quick-acting fuse of claim 1 is characterized in that: may further comprise the steps with the preparation method of ceramic member:
(1) ball milling takes by weighing raw material, the α-Al with 50%
2O
3The micro mist major ingredient drops into ball mill, drops into auxiliary material Suzhou soil, wilkinite, calcite, barium carbonate, living talcum and polyvinyl alcohol solution, Sodium hexametaphosphate 99 then, drops into the residue major ingredient again, adds water for ball milling, ball milling to slurry granularity D
50Value is the 3.5-4.5 micron;
(2) granulation with slurries filtration, deironing after mist projection granulating, dry back granulation powder water cut is controlled at below 1.0%;
(3) moulding adds the Magnesium Stearate with respect to said major ingredient, auxiliary material gross weight 0.4-0.5% to said granulation powder, and uniform mixing 30-40min adds sintered-carbide die; Adopt automatic double-sided pressing machine compacting; Pressure is 6-7MPa, and pressurize 4-7 second, obtaining density is 1.9-2.0 g/cm
3Blank;
(4) biscuiting is heated to said blank shove charge 950 ℃ and fires, and insulation 1h cooling is come out of the stove; Temperature curve is designed to during said biscuiting: blank is warming up to 300 ℃ by room temperature through 1h, is warming up to 600 ℃ through 2h, is warming up to 950 ℃ through 3h, 950 ℃ of insulation 1h; Be cooled to 600 ℃ through 3h then, naturally cool to 300 ℃;
(5) drilling and tapping fixes 90 on the rig board
0Strongback is placed on blank on the strongback, adopts multi-shaft interlocked drilling tapping machine, once gets out all holes on the tapping blank;
(6) fire the blank shove charge, be heated to 1420 ℃, insulation 3h, cooling kiln discharge; Temperature curve is designed to during said firing: blank is warming up to 300 ℃ by room temperature through 3h, is warming up to 600 ℃ through 2h, is warming up to 950 ℃ through 3h again, 950 ℃ of insulation 1h; Be warming up to 1420 ℃ through 3h, at 1420 ℃ of insulation 3h; Be cooled to 950 ℃ through 5h then, be cooled to 650 ℃, naturally cool to 300 ℃ then through 3h.
6. preparation method according to claim 5 is characterized in that: drum's speed of rotation is 15-17r/min during said ball milling, ball milling time 16-20h.
7. preparation method according to claim 5 is characterized in that: the prilling tower inlet temperature is 390-400 ℃ during said granulation, and temperature out is 65-75 ℃.
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| CN111484315A (en) * | 2020-04-07 | 2020-08-04 | 韶关市曲江区国睿高新材料有限公司 | Ceramic formula, preparation method and ceramic grinding core rotor |
| CN115490503B (en) * | 2022-10-25 | 2023-05-12 | 娄底市海天特种陶瓷有限公司 | Ceramic composite material and fuse porcelain tube |
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| CN1340475A (en) * | 2000-09-01 | 2002-03-20 | 山东晨鸿电工有限责任公司 | Alpha-Al2O3 ceramic for electric vacuum |
| CN101412619A (en) * | 2008-11-12 | 2009-04-22 | 李海峰 | Micropore hydrogenated aluminum porcelain tube and preparation thereof |
| CN101475379A (en) * | 2007-12-31 | 2009-07-08 | 徐广珠 | Technique for processing high-frequency porcelain |
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|---|---|---|---|---|
| CN1340475A (en) * | 2000-09-01 | 2002-03-20 | 山东晨鸿电工有限责任公司 | Alpha-Al2O3 ceramic for electric vacuum |
| CN101475379A (en) * | 2007-12-31 | 2009-07-08 | 徐广珠 | Technique for processing high-frequency porcelain |
| CN101412619A (en) * | 2008-11-12 | 2009-04-22 | 李海峰 | Micropore hydrogenated aluminum porcelain tube and preparation thereof |
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