CN1789434A - Functional graded composite material lining for blast furnace bucket and its preparation method - Google Patents
Functional graded composite material lining for blast furnace bucket and its preparation method Download PDFInfo
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- CN1789434A CN1789434A CN 200510022650 CN200510022650A CN1789434A CN 1789434 A CN1789434 A CN 1789434A CN 200510022650 CN200510022650 CN 200510022650 CN 200510022650 A CN200510022650 A CN 200510022650A CN 1789434 A CN1789434 A CN 1789434A
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- composite material
- carborundum
- blast furnace
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- silicon carbide
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- 239000002131 composite material Substances 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims description 16
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 35
- 238000000034 method Methods 0.000 claims abstract description 25
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 16
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 239000011800 void material Substances 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 239000012298 atmosphere Substances 0.000 claims description 7
- 230000035515 penetration Effects 0.000 claims description 7
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 238000003475 lamination Methods 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 5
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- 238000000748 compression moulding Methods 0.000 claims description 2
- 230000004048 modification Effects 0.000 claims description 2
- 238000012986 modification Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 abstract description 2
- 229920006395 saturated elastomer Polymers 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 10
- 229910052782 aluminium Inorganic materials 0.000 description 10
- 239000011159 matrix material Substances 0.000 description 9
- 239000000919 ceramic Substances 0.000 description 8
- 239000004411 aluminium Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 238000005524 ceramic coating Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 239000000956 alloy Substances 0.000 description 3
- 238000000498 ball milling Methods 0.000 description 2
- 238000005469 granulation Methods 0.000 description 2
- 230000003179 granulation Effects 0.000 description 2
- 238000000713 high-energy ball milling Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229920000140 heteropolymer Polymers 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 210000001138 tear Anatomy 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
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Abstract
The invention relates blast furnace bucket functional gradient composite material inside lining and preparing method. The inside lining is synthesized by SiC and Al. On the front of the inside lining the carborundum content is up to above 70%, on the back of the inside lining there is aluminum alloy, and in the middle of the inside lining the carborundum content is changed by gradient. The method comprises the following steps: preparing the carborundum preformed body possessing the different porosity by moulding, surface modifying the carborundum by high-temperature treatment, entering the carborundum preformed body into the non-pressure saturated mould in turn according to the porosity, then infiltrating the aluminum alloy and getting the composite material inside lining. The composite material can also be used in tank armor and other resistance to impact fields.
Description
One, technical field
The present invention relates to a kind of functional gradient composite materials liner and preparation method thereof, particularly relate to a kind of functional graded composite material lining for blast furnace bucket and preparation method thereof.
Two, background technology
The blast furnace bucket of steelworks is the important component part of steelmaking equipment.Since in the charging process, the impact of raw materials such as iron ore, and the batch can wearing and tearing are very serious.Generally adopt antifriction cast iron as liner at present, however, stream time is half a year only, has increased steel-making cost.Ceramic abrasive resistance such as silicon carbide, corundum is good, yet fragility is big, can not satisfy the needs of thump condition.Press for development novel low-cost, wear-resisting, impact-resistant blast furnace bucket material.
Chinese patent CN98123920.X (open day is on July 12nd, 2000) discloses a kind of method of utilizing the laser auxiliary self-spreading to form ceramic coating in the metallic surface, this method feature comprises by stoichiometric gets the reactant powder that two or more can carry out the SHS reaction, the additive of adding 0～40% is coated on the metallic surface after mixing; At laser energy density is 1.5 * 10
3~ 5.0 * 10
3J/cm
2Booster action under, produce self-propagating reaction and form ceramic coating, this method advantage is directly to form the ceramic coating that has transition layer in the metallic surface, reduces raw materials cost; The laser energy density that uses only is single laser method 1/5 * 1/3, saves the energy more than 2 ~ 3 times; Be easy to control, scaling loss and sputtering phenomenon are little.This method shortcoming is that the ceramic coating fragility of preparation is big, can bear the wearing and tearing under the no impact condition, weares and teares under the condition that can not withstand shocks.
The SiC/Al matrix material of pottery and the compound preparation of aluminium not only has the toughness of aluminium but also has Standpoint of Ceramic Wear-resisting Function, and the high residual stress that exists in the matrix material makes it have high wearability.
Chinese patent CN98113687.7 (open day is on April 7th, 1999) discloses a kind of aluminum matrix composite pressureless penetration casting method; this method is that high rigidity ceramic particle or whisker and ferric oxide are mixed the bonding protruded packing layer that becomes; put into thermally resistant container; the aluminium alloy material that with composition is silicon 5-20%, calcium 0.1-0.8%, magnesium 0.1-1% is again inserted; in process furnace, heat up; seepage velocity 10-20mm/ hour, condensation can get the matrix material of ceramic phase content 40-60% after finishing.This method advantage is to add an amount of aluminium alloy and strontium after infiltration is finished again, stirs the permeate portion of loosing by mechanical stirring, and acquisition ceramic phase uniform distribution, content are the aluminum matrix composite of 5-30%, and this method shortcoming is that ceramic content is few, and wear resistance is low.
Chinese patent CN01140427.2 (open day is on June 11st, 2003) discloses a kind of particle enhanced aluminum-based composite material and manufacture method thereof, this method be with enhancing body powder art and trace active metallic element join carry out high-energy ball milling in the ball grinding cylinder after, add the aluminum base alloy powder again and carry out the speed change high-energy ball milling, at last, add micro-liquid surfactant ball milling in 15～80 ℃ of scopes again, the composite powder art that ball milling makes after finishing obtains billet through hot compacting, billet is through extruding, rolling, obtain product after the hot-work such as die forging, this method advantage is that matrix material easily cuts, steady quality, this method shortcoming are that hot compacting causes cost to improve.
Chinese patent CN200510011102.4 (open day is on July 27th, 2005) discloses a kind of preparation high-volume fractional silicon-carbide particle reinforced aluminium-base composite material member method, this method is that SiC powder and heteropolymer constituent element paraffinic base binding agent are mixed into uniform feeding, feeding after granulating on injection machine injection forming, gained SiC preform is through presintering under 1000～1150 ℃ of temperature after solvent and the hot degreasing, at last by do not have the infiltrating method of pressure under 1100～1200 ℃ of temperature, N
2In the atmosphere Al alloy liquation is penetrated in the SiC skeleton, thereby obtain to have high volume fraction SiC p/Al composite material parts, this method advantage is directly to prepare the SiCp/Al composite material parts with complicated shape, simultaneously, SiC volume fraction height, microstructure of composite is even, density is high, can realize producing the SiCp/Al composite material parts in batches, production cost is low, and the shortcoming of this method is to obtain gradient composites.
Studies show that, the volume content of ceramic particle in the SiC/Al composite panel along its variation in thickness, be prepared into functional gradient composite materials, make the front of composite panel have the character that is similar to pottery, bring into play its wear-resistant property, the back side of composite panel, character with aluminium alloy, improve toughness, just can reduce the problems such as stress concentration that caused owing to pottery and aluminum alloy materials wave resistance mismatch and Young's modulus mismatch largely, and may make matrix material stand long-term impact.The positive ceramic content height of composite panel, temperature tolerance is good, and the iron ore that can stand heat in the batch can impacts.
Three, summary of the invention
The technical problem to be solved in the present invention provides the functional graded composite material lining for blast furnace bucket that a kind of wear resistance is good, anti-impact force is strong, cost is low, this liner is composited by SiC and Al, bearing the ballistic front of iron ore carborundum content is aluminium alloy up to the 70%-85%. back side, carborundum content graded in the middle of the liner.
Another technical problem that the present invention will solve provides a kind of preparation method of above-mentioned functional graded composite material lining for blast furnace bucket, this method feature is to have by the mold pressing preparation earlier the silicon carbide precast body of different void content, again by pyroprocessing to the silicon carbide modification, silicon carbide precast body with different void content is positioned in the pressureless penetration mould successively according to the void content size order then, infiltrates aluminium alloy by the method for pressureless penetration again and can obtain composite material as liner.
A kind of preparation method of functional graded composite material lining for blast furnace bucket is characterized in that comprising the step of following order:
1. adopt the silicon carbide precoated plate that the compression molding preparation size is identical, void content is different, void content scope 50～85%, thickness range 5～20mm, the carborundum powder material granularity is less than 100 μ m;
2. carborundum plate pyroprocessing in air atmosphere, 1000～1500 ℃ of temperature ranges, 2～5 hours treatment times;
3. after pyroprocessing was finished, precast body was processed to the rectangle precast body of sectional dimension unanimity;
4. carborundum plate is positioned in the silicon nitride mould according to void content size lamination, simultaneously aluminium alloy is positioned in the mould.Put into atmosphere furnace after installing, feed nitrogen, be heated to 1000～1200 ℃, be incubated 1～4 hour, be cooled to room temperature then, promptly obtain the liner blank after the demoulding;
5. the blank surface finish promptly obtains functional graded composite material lining for blast furnace bucket.
The invention has the advantages that: (1) has good abrasion resistance properties; (2) has good shock resistance; (3) backboard is an aluminium alloy, and the impact that can slow down iron ore avoids iron ore and coke to pulverize; (4) the simple cost of moulding is low; (5) can adjust the number of plies of silicon carbide precast body to obtain the needs that other performances satisfy different blast furnace buckets; (6) because this matrix material has good shock resistance, so this matrix material also can be used to other shock resistance fields such as tank armor.
Four, description of drawings
Fig. 1 hangs liner silicon nitride mould synoptic diagram for the pressureless penetration legal system is equipped with the blast furnace bucket wall.
Fig. 2 hangs liner shape synoptic diagram for the blast furnace bucket wall.
Fig. 3 is equipped with blast furnace bucket funnel place liner silicon nitride mould synoptic diagram for the pressureless penetration legal system.
Fig. 4 is a blast furnace bucket funnel place liner shape synoptic diagram.
Five, embodiment
Below in conjunction with embodiment the present invention is described in further detail.
Embodiment 1: the blast furnace bucket wall hangs liner and preparation thereof
Selecting granularity for use is 74 μ m sic powder 100g, 50 μ m sic powder 60g, 20 μ m sic powder 30g, the 100mm mould mold pressing of packing into after the mixing granulation applies 100MPa pressure, carries out pyroprocessing after the demoulding, 1500 ℃ of treatment temps, soaking time 2 hours.After pyroprocessing was intact, prefabricated section thickness was about 18mm, and precoated plate is cut, and obtaining surface size is the rectangle prefabricated section of 60mm * 70mm.Again prefabricated section is kept flat in the mould shown in Figure 1 that sectional dimension is 65mm * 75mm.Aluminium alloy is placed on the precast body, puts into atmosphere furnace then, feed nitrogen, be heated to 1150 ℃, be incubated 2 hours, be cooled to room temperature then, promptly obtain the liner blank after the demoulding.By mechanical workout, the aluminium lamination of blank front face surface is ground off, the aluminium lamination with the edge grinds off again, keeps the initial length and the width of precast body, promptly obtains the blast furnace bucket wall and hangs liner.
Embodiment 2: blast furnace bucket funnel place liner
Selecting granularity for use is 74 μ m sic powder 360g, be divided into three equal parts after the granulation and be respectively charged into the mold pressing of 150mm mould, first part applies 100MPa pressure, apply 250MPa after the demoulding again and carry out isostatic cool pressing, obtain first precoated plate, second part obtains second precoated plate after applying the demoulding of 100MPa pressure, and the 3rd part applies 50MPa pressure, obtains the 3rd precoated plate after the demoulding.Three precoated plates are carried out pyroprocessing simultaneously, 1300 ℃ of treatment temps, soaking time 4 hours.After pyroprocessing is intact, three precoated plates are cut, obtain the square prefabricated section that three surface sizes are 100mm * l00mm.Earlier the 3rd block of prefabricated section put into the mould shown in Figure 3 that sectional dimension is 105mm * l05mm, put into second then, put into first at last.Aluminium alloy is placed on the precast body, puts into atmosphere furnace then, feed nitrogen, be heated to 1100 ℃, be incubated 4 hours, be cooled to room temperature then, promptly obtain the liner blank after the demoulding.By mechanical workout, the aluminium lamination of blank front face surface is ground off, the aluminium lamination with the edge grinds off again, keeps the initial length and the width of precast body, promptly obtains blast furnace bucket funnel place liner.
Claims (3)
1. functional graded composite material lining for blast furnace bucket, it is characterized in that, by the front is that the silicon carbide and the back side are that the content of its silicon carbide of forming of aluminium alloy compound changes in gradient from top layer to the nexine in front, and bears the liner of the high Da 70%-85% of the ballistic front of iron ore carborundum content.
2. the preparation method of a functional graded composite material lining for blast furnace bucket, it is characterized in that, the silicon carbide precast body that has different void content earlier by the mold pressing preparation, again by pyroprocessing to the silicon carbide modification, silicon carbide precast body with different void content is positioned in the pressureless penetration mould successively according to the void content size order then, infiltrates aluminium alloy by the method for pressureless penetration again and can obtain composite material as liner.
3. the preparation method of functional graded composite material lining for blast furnace bucket according to claim 2 is characterized in that, comprises the step of following order:
(1) adopt the silicon carbide precoated plate that the compression molding preparation size is identical, void content is different, void content scope 50～85%, thickness range 5～20mm, the carborundum powder material granularity is less than 100 μ m;
(2) carborundum plate pyroprocessing in air atmosphere, 1000～1500 ℃ of temperature ranges, 2～5 hours treatment times;
(3) after pyroprocessing was finished, precast body was processed to the rectangle precast body of sectional dimension unanimity;
(4) carborundum plate is positioned in the silicon nitride mould according to void content size lamination, simultaneously aluminium alloy is positioned in the mould.Put into atmosphere furnace after installing, feed nitrogen, be heated to 1000～1200 ℃, be incubated 1～4 hour, be cooled to room temperature then, promptly obtain the liner blank after the demoulding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510022650 CN1789434A (en) | 2005-12-27 | 2005-12-27 | Functional graded composite material lining for blast furnace bucket and its preparation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510022650 CN1789434A (en) | 2005-12-27 | 2005-12-27 | Functional graded composite material lining for blast furnace bucket and its preparation method |
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| CN1789434A true CN1789434A (en) | 2006-06-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100449029C (en) * | 2006-09-15 | 2009-01-07 | 济南大学 | Ti/Al2O3 composite material for wave impedance gradient flying plate and manufacture thereof |
| CN102586654A (en) * | 2012-03-15 | 2012-07-18 | 中国科学院长春应用化学研究所 | Alloy concrete applied to light armors and bases and preparation method of alloy concrete |
-
2005
- 2005-12-27 CN CN 200510022650 patent/CN1789434A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100449029C (en) * | 2006-09-15 | 2009-01-07 | 济南大学 | Ti/Al2O3 composite material for wave impedance gradient flying plate and manufacture thereof |
| CN102586654A (en) * | 2012-03-15 | 2012-07-18 | 中国科学院长春应用化学研究所 | Alloy concrete applied to light armors and bases and preparation method of alloy concrete |
| CN102586654B (en) * | 2012-03-15 | 2014-05-21 | 中国科学院长春应用化学研究所 | Alloy concrete applied to light armors and bases and preparation method of alloy concrete |
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