CN103693975B - Ultrahigh strength thermal shock resistance corundum/mullite product and manufacture method thereof - Google Patents
Ultrahigh strength thermal shock resistance corundum/mullite product and manufacture method thereof Download PDFInfo
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- CN103693975B CN103693975B CN201310641246.2A CN201310641246A CN103693975B CN 103693975 B CN103693975 B CN 103693975B CN 201310641246 A CN201310641246 A CN 201310641246A CN 103693975 B CN103693975 B CN 103693975B
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Abstract
The invention relates to an ultrahigh strength thermal shock resistance corundum/mullite product and a manufacture method thereof. The manufacture method comprises steps of stirring 8-mesh white corundum, 80-mesh white corundum, 320-mesh tabular corundum, 24-mesh capacitance synthetic mullite, 36-mesh capacitance synthetic mullite, 280-mesh andalusite, 180-mesh sillimanite, 800-mesh aluminum oxide powder, 200-mesh kaolin and yellow dextrin for 1-3 hours, then adding 8% water so as to wring, stacking and ageing for 10 days, stirring for 15 minutes again, then molding through jolt-squeeze, naturally drying in shade, then firing for 6-8 hours at 1600 DEG C-1620 DEG C so as to obtain the ultrahigh strength thermal shock resistance corundum/mullite product. According to the manufacture method, the raw material chemical components and granularity ratio are optimized, the product is sintered fully, and the prepared corundum/mullite product has low porosity, large volume density, good strength, good thermal shock resistance, good integrated quality, and long service life up to 4-6 months.
Description
Technical field
The present invention relates to strong anti-thermal shock corundum/mullite product of a kind of superelevation and preparation method thereof.
Background technology
Corundum/mullite product has that resistivity against fire is excellent, normal temperature and hot strength is large, good chemical stability, is specially adapted to the sintering of the materials such as zinc oxide valve plate in thunder arrester and electronic component.But, because the corundum phase coefficient of expansion is larger, cause the especially high-strength thermal shock resistance of the thermostability of common corundum/mullite product not ideal enough, shorten the work-ing life of goods, and the quality of sintered zinc oxide valve plate and electronic component is had a negative impact.
Summary of the invention
The technical problem to be solved in the present invention is, improves for the above-mentioned deficiency of existing superelevation strong anti-thermal shock corundum/mullite product, corundum/mullite product that obtained thermal shock resistance is good.
The technical solution adopted in the present invention is: the strong anti-thermal shock corundum/mullite product of superelevation, and it is prepared by the raw material of following weight percent:
8 order white fused aluminas 15% ~ 25%
80 order white fused aluminas 5% ~ 10%
320 order plate diamond spars 7% ~ 15%
24 order electric capacity mullite synthesizings 10% ~ 20%
36 order electric capacity mullite synthesizings 5% ~ 15%
280 order andaluzites 6% ~ 18%
180 order sillimanites 3% ~ 10%
800 order alumina powders 15% ~ 22%
200 order kaolin 3% ~ 9%
Yellow starch gum 0.1% ~ 0.5%
Its making method is following steps:
(1) above-mentioned raw materials is delivered in vertical stainless steel stirrer and stirs 1 ~ 3h, mix;
(2) raw material mixed is placed in horizontal auger machine and the water adding 8% of dry mash total mass twists out, stacks ageing mixture 10d;
(3) make base by being delivered to after raw material stirring 15min in vibrations oil press with just horizontal jolt-squeezing with forced action type meteor stirrer, whole base is also placed nature and is dried in the shade;
(4) dry body is placed in 16m diplopore high temperature pusher formula oil kiln to fire;
(5) goods burnt till polish, check, test, pack.
The strong anti-thermal shock corundum/mullite product of above-mentioned superelevation, the weight percent of each raw material is preferably:
8 order white fused aluminas 17% ~ 22%
80 order white fused aluminas 6% ~ 8%
320 order plate diamond spars 8% ~ 12%
24 order electric capacity mullite synthesizings 12% ~ 18%
36 order electric capacity mullite synthesizings 7% ~ 14%
280 order andaluzites 8% ~ 12%
180 order sillimanites 4% ~ 8%
800 order alumina powders 16% ~ 20%
200 order kaolin 4% ~ 7%
Yellow starch gum 0.15% ~ 0.3%.
The strong anti-thermal shock corundum/mullite product of above-mentioned superelevation, the weight percent of each raw material is:
8 order white fused aluminas 19.8%
80 order white fused aluminas 7%
320 order plate diamond spars 10%
24 order electric capacity mullite synthesizings 15%
36 order electric capacity mullite synthesizings 10%
280 order andaluzites 10%
180 order sillimanites 5%
800 order alumina powders 18%
200 order kaolin 5%
Yellow starch gum 0.2%.
The strong anti-thermal shock corundum/mullite product of above-mentioned superelevation, its material chemical component comprises aluminum oxide 78 ~ 82%, silica 15 ~ 18%, is preferably aluminum oxide 80%, silica 1 6.7%.
The strong anti-thermal shock corundum/mullite product of above-mentioned superelevation, kaolin is Kaolin of Suzhou.
The strong anti-thermal shock corundum/mullite product of above-mentioned superelevation, alumina powder is Alpha-alumina.
The making method of the strong anti-thermal shock corundum/mullite product of above-mentioned superelevation, in step (4), the firing time is 6 ~ 8 hours, and oily kiln temperature degree is 1600 DEG C ~ 1620 DEG C.
Plate diamond spar is a kind of pure contraction alundum thoroughly, has good hot volume stability and heat-resistant knocking stability.Kaolin of Suzhou purity is high, granularity is suitable, and plasticity-is good, dry and to burn till contraction less.Sillimanite and andaluzite sintering temperature lower, the sintering temperature of the present invention's combination can be reduced and produce certain volume and expand, eliminating the shrinkage phenomenon of ambiguity material, extend the work-ing life of goods.The granularity of raw material is less, and thermal shock resistance is poorer, and the present invention strictly controls each raw material particle size size, reduces apparent porosity, increases volume density, improves the thermal shock resistance of goods.
The apparent porosity of the superelevation that the present invention obtains strong anti-thermal shock corundum/mullite product is lower, and volume density is comparatively large, and intensity is good, and high heat-flash shock resistance is good, and integrated quality is good, and work-ing life can reach for 4 ~ June, and properties all can meet market demands simultaneously.
Advantage of the present invention and beneficial effect:
1. strictly control material composition, proportioning and granularity proportioning, reach sintering temperature lower while sintering effect good object.
2. use vibrations oil press to shake molded, each feed distribution is even, and distribution of particle sizes is even, and effectively reduce void content, increase volume density, goods have good hot strength.
3. burn till soaking time longer, through fully sintering, the high-strength good thermal shock of goods, work-ing life extends to for 4 ~ June.
Embodiment
Below in conjunction with embodiment, the present invention is described further.
Embodiment 1
(1) 8 order white fused alumina 150Kg, 80 order white fused alumina 50Kg, 320 order plate diamond spar 70Kg, 24 order electric capacity mullite synthesizing 125Kg, 36 order electric capacity mullite synthesizing 50Kg, 280 order andaluzite 180Kg, 180 order sillimanite 60Kg, 800 order alumina powder 220Kg, 200 order kaolin 90Kg, yellow starch gum 5Kg are delivered in vertical stainless steel stirrer and stir 1h, mix;
(2) raw material mixed is placed in horizontal auger machine and the water adding 8% of dry mash total mass twists out, stacks ageing mixture 10d;
(3) make base by being delivered to after raw material stirring 15min in vibrations oil press with just horizontal jolt-squeezing with forced action type meteor stirrer, whole base is also placed nature and is dried in the shade;
(4) dry body is placed in 16m diplopore high temperature pusher formula oil kiln to fire, temperature 1600 DEG C, time 8h;
(5) goods burnt till polish, check, test, pack.
Embodiment 2
(1) 8 order white fused alumina 250Kg, 80 order white fused alumina 100Kg, 320 order plate diamond spar 76Kg, 24 order electric capacity mullite synthesizing 100Kg, 36 order electric capacity mullite synthesizing 60Kg, 280 order andaluzite 70Kg, 180 order sillimanite 100Kg, 800 order alumina powder 165Kg, 200 order kaolin 75Kg, yellow starch gum 4Kg are delivered in vertical stainless steel stirrer and stir 2h, mix;
(2) raw material mixed is placed in horizontal auger machine and the water adding 8% of dry mash total mass twists out, stacks ageing mixture 10d;
(3) make base by being delivered to after raw material stirring 15min in vibrations oil press with just horizontal jolt-squeezing with forced action type meteor stirrer, whole base is also placed nature and is dried in the shade;
(4) dry body is placed in 16m diplopore high temperature pusher formula oil kiln to fire, temperature 1605 DEG C, time 6h;
(5) goods burnt till polish, check, test, pack.
Embodiment 3
(1) 8 order white fused alumina 174Kg, 80 order white fused alumina 55Kg, 320 order plate diamond spar 150Kg, 24 order electric capacity mullite synthesizing 200Kg, 36 order electric capacity mullite synthesizing 150Kg, 280 order andaluzite 60Kg, 180 order sillimanite 30Kg, 800 order alumina powder 150Kg, 200 order kaolin 30Kg, yellow starch gum 1Kg are delivered in vertical stainless steel stirrer and stir 1h, mix;
(2) raw material mixed is placed in horizontal auger machine and the water adding 8% of dry mash total mass twists out, stacks ageing mixture 10d;
(3) make base by being delivered to after raw material stirring 15min in vibrations oil press with just horizontal jolt-squeezing with forced action type meteor stirrer, whole base is also placed nature and is dried in the shade;
(4) dry body is placed in 16m diplopore high temperature pusher formula oil kiln, firing temperature 1610 DEG C, time 7h;
(5) goods burnt till polish, check, test, pack.
Embodiment 4
(1) 8 order white fused alumina 216Kg, 80 order white fused alumina 60Kg, 320 order plate diamond spar 116Kg, 24 order electric capacity mullite synthesizing 120Kg, 36 order electric capacity mullite synthesizing 137Kg, 280 order andaluzite 80Kg, 180 order sillimanite 40Kg, 800 order alumina powder 160Kg, 200 order kaolin 68Kg, yellow starch gum 3Kg are delivered in vertical stainless steel stirrer and stir 2h, mix;
(2) raw material mixed is placed in horizontal auger machine and the water adding 8% of dry mash total mass twists out, stacks ageing mixture 10d;
(3) make base by being delivered to after raw material stirring 15min in vibrations oil press with just horizontal jolt-squeezing with forced action type meteor stirrer, whole base is also placed nature and is dried in the shade;
(4) dry body is placed in 16m diplopore high temperature pusher formula oil kiln to fire, temperature 1615 DEG C, time 8h;
(5) goods burnt till polish, check, test, pack.
Embodiment 5
(1) 8 order white fused alumina 198Kg, 70 order white fused alumina 50Kg, 320 order plate diamond spar 100Kg, 24 order electric capacity mullite synthesizing 150Kg, 36 order electric capacity mullite synthesizing 100Kg, 280 order andaluzite 100Kg, 180 order sillimanite 50Kg, 800 order alumina powder 180Kg, 200 order kaolin 50Kg, yellow starch gum 2Kg are delivered in vertical stainless steel stirrer and stir 1h, mix;
(2) raw material mixed is placed in horizontal auger machine and the water adding 8% of dry mash total mass twists out, stacks ageing mixture 10d;
(3) make base by being delivered to after raw material stirring 15min in vibrations oil press with just horizontal jolt-squeezing with forced action type meteor stirrer, whole base is also placed nature and is dried in the shade;
(4) dry body is placed in 16m diplopore high temperature pusher formula oil kiln to fire, temperature 1600 DEG C, time 6h;
(5) goods burnt till polish, check, test, pack.
Embodiment 6
(1) 8 order white fused alumina 170Kg, 80 order white fused alumina 76Kg, 320 order plate diamond spar 80Kg, 24 order electric capacity mullite synthesizing 75.5Kg, 36 order electric capacity mullite synthesizing 70Kg, 280 order andaluzite 116Kg, 180 order sillimanite 76Kg, 800 order alumina powder 195Kg, 200 order kaolin 40Kg, yellow starch gum 1.5Kg are delivered in vertical stainless steel stirrer and stir 3h, mix;
(2) raw material mixed is placed in horizontal auger machine and the water adding 8% of dry mash total mass twists out, stacks ageing mixture 10d;
(3) make base by being delivered to after raw material stirring 15min in vibrations oil press with just horizontal jolt-squeezing with forced action type meteor stirrer, whole base is also placed nature and is dried in the shade;
(4) dry body is placed in 16m diplopore high temperature pusher formula oil kiln to fire, temperature 1620 DEG C, time 7h;
(5) goods burnt till polish, check, test, pack.
Claims (1)
1. the strong anti-thermal shock corundum-mullite product of superelevation, is characterized in that, it is prepared by the raw material of following weight percent:
8 order white fused aluminas 15% ~ 25%
80 order white fused aluminas 5% ~ 10%
320 order plate diamond spars 7% ~ 15%
24 order electric smelting mullite synthesizings 10% ~ 20%
36 order electric smelting mullite synthesizings 5% ~ 15%
280 order andaluzites 6% ~ 18%
180 order sillimanites 3% ~ 10%
800 order alumina powders 15% ~ 22%
200 order kaolin 3% ~ 9%
Yellow starch gum 0.1% ~ 0.5%
Its making method is following steps:
(1) above-mentioned raw materials is delivered in vertical stainless steel stirrer and stirs 1 ~ 3h, mix;
(2) raw material mixed is placed in horizontal auger machine and the water adding 8% of dry mash total mass twists out, stacks tired
Material 10d;
(3) make being delivered to after raw material stirring 15min in vibrations oil press with just horizontal jolt-squeezing with forced action type meteor stirrer
Base, whole base is also placed nature and is dried in the shade;
(4) dry body is placed in 16m diplopore high temperature pusher formula oil kiln to fire, the firing time is 6 ~ 8 hours, and oily kiln temperature degree is 1600 DEG C ~ 1620 DEG C;
(5) goods burnt till polish, check, pack;
Described material chemical component comprises aluminum oxide 78 ~ 82%, silica 15 ~ 18%;
Described kaolin is Kaolin of Suzhou;
Described alumina powder is α-aluminum oxide.
2., according to strong anti-thermal shock corundum-mullite product of the superelevation described in claim 1 and preparation method thereof, it is characterized in that,
The weight percent of each raw material is preferably:
8 order white fused aluminas 17% ~ 22%
80 order white fused aluminas 6% ~ 8%
320 order plate diamond spars 8% ~ 12%
24 order electric smelting mullite synthesizings 12% ~ 18%
36 order electric smelting mullite synthesizings 7% ~ 14%
280 order andaluzites 8% ~ 12%
180 order sillimanites 4% ~ 8%
800 order alumina powders 16% ~ 20%
200 order kaolin 4% ~ 7%
Yellow starch gum 0.15% ~ 0.3%.
3. according to strong anti-thermal shock corundum-mullite product of the superelevation described in claim 2 and preparation method thereof, it is characterized in that, the weight percent of each raw material is:
8 order white fused aluminas 19.8%
80 order white fused aluminas 7%
320 order plate diamond spars 10%
24 order electric smelting mullite synthesizings 15%
36 order electric smelting mullite synthesizings 10%
280 order andaluzites 10%
180 order sillimanites 5%
800 order alumina powders 18%
200 order kaolin 5%
Yellow starch gum 0.2%.
4., according to the strong anti-thermal shock corundum-mullite product of the superelevation described in claim 3, it is characterized in that, its material chemical component comprises aluminum oxide 80%, silica 1 6.7%.
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| CN104591753B (en) * | 2014-12-24 | 2016-08-24 | 江苏三恒高技术窑具有限公司 | A kind of high-performance modified mullite high temperature platen and manufacture method |
| CN107098713A (en) * | 2017-06-12 | 2017-08-29 | 合肥铭佑高温技术有限公司 | A kind of exotic material and preparation method for magnetic core |
| CN107098712A (en) * | 2017-06-12 | 2017-08-29 | 合肥铭佑高温技术有限公司 | A kind of exotic material and preparation method for Zinc-Oxide Arrester valve block |
| CN107903041B (en) * | 2017-10-25 | 2021-01-26 | 湖北亿佳欧电子陶瓷股份有限公司 | Casket-like bowl and preparation method thereof |
| CN108546139A (en) * | 2018-05-02 | 2018-09-18 | 广东羚光新材料股份有限公司 | A kind of mullite crystal whisker doped corundum-mullite bearing burning plate and its manufacturing method |
| CN109574640A (en) * | 2019-01-25 | 2019-04-05 | 山东铭特陶瓷材料有限公司 | The preparation method of high-temperature corundum mullite crucible |
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| CN1159795A (en) * | 1994-09-28 | 1997-09-17 | 东陶机器株式会社 | Process for producing body of whiteware with high strength and excellent themal impact resistance |
| CN101481255A (en) * | 2009-02-19 | 2009-07-15 | 浙江大学 | High-heat resistance shock resistant mullite bearing burning plate and preparation thereof |
| CN101618968A (en) * | 2009-08-11 | 2010-01-06 | 郑州东方炉衬材料有限公司 | Ultra-microporous lightweight insulated firebrick and manufacture method thereof |
| CN101955364A (en) * | 2010-10-21 | 2011-01-26 | 淄博鲁铭高温材料科技有限公司 | Method for producing corundum-mullite sagger |
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- 2013-12-04 CN CN201310641246.2A patent/CN103693975B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1159795A (en) * | 1994-09-28 | 1997-09-17 | 东陶机器株式会社 | Process for producing body of whiteware with high strength and excellent themal impact resistance |
| CN101481255A (en) * | 2009-02-19 | 2009-07-15 | 浙江大学 | High-heat resistance shock resistant mullite bearing burning plate and preparation thereof |
| CN101618968A (en) * | 2009-08-11 | 2010-01-06 | 郑州东方炉衬材料有限公司 | Ultra-microporous lightweight insulated firebrick and manufacture method thereof |
| CN101955364A (en) * | 2010-10-21 | 2011-01-26 | 淄博鲁铭高温材料科技有限公司 | Method for producing corundum-mullite sagger |
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