CN1226451C - Manufacturing process of ceramic composite steel pipe - Google Patents
Manufacturing process of ceramic composite steel pipe Download PDFInfo
- Publication number
- CN1226451C CN1226451C CN 01139228 CN01139228A CN1226451C CN 1226451 C CN1226451 C CN 1226451C CN 01139228 CN01139228 CN 01139228 CN 01139228 A CN01139228 A CN 01139228A CN 1226451 C CN1226451 C CN 1226451C
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- CN
- China
- Prior art keywords
- steel pipe
- materials
- sio
- ceramic
- mixing
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 41
- 239000010959 steel Substances 0.000 title claims abstract description 41
- 239000000919 ceramic Substances 0.000 title claims abstract description 23
- 239000002131 composite material Substances 0.000 title claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 35
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 23
- YDZQQRWRVYGNER-UHFFFAOYSA-N iron;titanium;trihydrate Chemical compound O.O.O.[Ti].[Fe] YDZQQRWRVYGNER-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000002156 mixing Methods 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 13
- 238000005245 sintering Methods 0.000 claims abstract description 11
- 229910052742 iron Inorganic materials 0.000 claims abstract description 9
- 238000005524 ceramic coating Methods 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 6
- 239000000654 additive Substances 0.000 claims abstract description 5
- 239000000843 powder Substances 0.000 claims abstract description 5
- 230000000996 additive effect Effects 0.000 claims abstract description 4
- 229910052681 coesite Inorganic materials 0.000 claims description 8
- 229910052906 cristobalite Inorganic materials 0.000 claims description 8
- 239000000377 silicon dioxide Substances 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 229910052682 stishovite Inorganic materials 0.000 claims description 8
- 229910052905 tridymite Inorganic materials 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 4
- 229910052791 calcium Inorganic materials 0.000 claims description 2
- 238000011049 filling Methods 0.000 claims description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 2
- 238000011068 loading method Methods 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 239000011707 mineral Substances 0.000 claims description 2
- 238000012216 screening Methods 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 229910010340 TiFe Inorganic materials 0.000 claims 1
- 238000000576 coating method Methods 0.000 abstract description 2
- 239000003245 coal Substances 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 238000005272 metallurgy Methods 0.000 abstract 1
- 239000002002 slurry Substances 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 7
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 5
- 229910052593 corundum Inorganic materials 0.000 description 4
- 229910001845 yogo sapphire Inorganic materials 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- FUJCRWPEOMXPAD-UHFFFAOYSA-N Li2O Inorganic materials [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 description 1
- XUCJHNOBJLKZNU-UHFFFAOYSA-M dilithium;hydroxide Chemical compound [Li+].[Li+].[OH-] XUCJHNOBJLKZNU-UHFFFAOYSA-M 0.000 description 1
- 239000010433 feldspar Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000010456 wollastonite Substances 0.000 description 1
- 229910052882 wollastonite Inorganic materials 0.000 description 1
Landscapes
- Rigid Pipes And Flexible Pipes (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Abstract
The invention relates to the new technical field of steel surface coatings, in particular to a manufacturing process of a ceramic composite steel pipe. The invention solves the defects of high raw material cost and gap between the ceramic layer and the iron layer of the existing ceramic composite steel pipe. The technical scheme of the invention is as follows: the ceramic composite steel pipe is produced with Al and SiO as material2The manufacturing method comprises the steps of drying, proportioning, mixing, charging and ignition sintering, and is characterized in that Al + pure ilmenite (FeTiO)3) Simultaneously adding an additive SiO into the materials2And the dried and uniformly mixed materials are filled into the steel pipe without preheating, and after ignition, reaction sintering is carried out under the action of centrifugal force, and a compact ceramic coating is formed on the inner wall of the steel pipe. The product can be widely used for conveying powder, slurry and tailings in the industries of metallurgy, mine, electric power, coal and the like.
Description
The technical field is as follows:
the invention relates to the new technical field of steel surface coatings, in particular to a manufacturing process of a ceramic composite steel pipe.
Background art:
the basic principle of the ceramic composite lining steel pipe is to use Al and Fe2O3(or Fe)3O4) The aluminothermic centrifugal reaction can self-maintain by means of heat release, and instantaneously melts reactant iron and alumina, under the action of centrifugal force, the alumina with light specific gravity is distributed on the inner wall of the steel pipe, and the iron with high density is distributed between the steel pipe and the alumina ceramic, and combines the steel pipe and the ceramic layer. Al and Fe2O3(or Fe)3O4) The reaction formula (c) is as follows:
chinese patent 90107244.3 discloses a technology for manufacturing corrosion-resistant and wear-resistant ceramic steel tube, in which Al + Fe2O3(or Fe)3O4) Simultaneously adding an additive SiO into the materials2And one or two alkali metal oxides (in Na)2O、K2O、Li2O) and one or two alkaline earth metal oxides RO (selected from MgO, CaO, BaO and ZnO), preheating the uniformly mixed materials or the steel tube strip materials to 100-300 ℃, igniting the materials, and performing reaction sintering under the action of centrifugal force to form a non-permeable compact ceramic coating with the thickness of about 2mm on the inner wall of the steel tube. SiO 22RO and R2The raw material O is preferably feldspar, talc, wollastonite, and other mineral materials, and the total weight of the additives is 3-10% (by weight), wherein SiO21 to 6%, RO 1 to 5%, R2O is 0 to 3%. The technology needs preheating, has complex process and high raw material cost, and in addition, because of Fe and Al2O3The ceramic layer and the iron layer form a gap after being completely separated, the adhesive force is not enough, and the overall quality of the ceramic lining steel pipe is influenced.
The invention content is as follows:
the technical problems to be solved by the invention are as follows: reduce the cost of raw materials, eliminate the gap between the ceramic layer and the iron layer. The technical scheme of the invention is as follows: the ceramic composite steel pipe is produced with Al and SiO as material2The manufacturing method comprises the steps of material baking, material mixing, material charging and ignition sintering, and is characterized in that Al + pure ilmenite (FeTiO)3) Adding an additive SiO into the materials2And filling the uniformly mixed materials into a steel pipe, igniting the materials, and performing reaction sintering under the action of centrifugal force to form a compact ceramic coating on the inner wall of the steel pipe. The material needs to be kept dry, preheating is not needed before ignition, the pure ilmenite contains a certain amount of low-melting-point phase substances such as Ca, Mg, Si and the like besides iron, and Al is caused to be generated in the reaction2O3The melting point is greatly reduced, the fluidity is improved, and the surface quality of the ceramic layer is improved. The specific manufacturing process comprises the following steps:
1. drying materials: mixing Al powder, pure ilmenite and SiO2And (4) respectively baking and dehumidifying at 38-75 ℃, and detecting the moisture.
2. Selecting materials: and screening the raw materials by using a 150-200 mesh screen.
3. Preparing materials: calculating the total material amount according to the weight of the steel pipe, and mixing the materials according to the following proportion:
al and pure ilmenite in a ratio of 1: 2.5-3.5,
SiO2the addition amount is equal to the total weight of the raw materials multiplied by 4-5.5%.
4. Mixing materials: adding the three raw materials into a mixer and mixing uniformly.
5. Loading and pipe making: adding the mixed raw materials into a steel pipe, uniformly distributing the materials, starting the pipe making machine, igniting the steel pipe when the rotating speed of the pipe making machine reaches 85-90% of the specified rotating speed of 900-1600 revolutions, and performing reaction sintering under the action of centrifugal force to form a ceramic coating with a smooth surface on the inner wall of the steel pipe.
The invention has the advantages of using cheap pure ilmenite (FeTiO)3) In place of Fe2O3(or Fe)3O4) Powder, pure ilmenite (FeTiO)3) Reacts with Al to generate Ti, Fe and Al2O3The mixed transition layer eliminates the gap between the ceramic layer and the iron layer, improves the bonding force of the ceramic layer and improves the product quality; the price of the pure ilmenite is about 600 yuan/ton, which is greatly increasedLess than Fe2O3(or Fe)3O4) The powder material (about 3000 yuan/ton) greatly reduces the cost of raw materials.
The specific implementation mode is as follows:
example 1:
78 g of aluminum powder (150-200 meshes), 250 g of pure ilmenite (150-200 meshes) and 14 g of SiO2Drying, mixing, placing into 20 steel tube with diameter of 108mm, thickness of 4mm and length of 150mm, fixing on tube making machine, starting ignition device when the rotation speed of centrifugal machine reaches 1170 rpm, and forming ceramic coating with thickness of more than 2mm on the inner wall of steel tube by reaction sintering. The surface of the ceramic layer is smooth and has no cracks, and the microhardness is more than or equal to 1200kg/mm2Density of 3.20g/cm3The crushing strength of the composite steel pipe is 300-330 Mpa, the shear strength is 20-25 Mpa, and the corrosion resistance (10% HCl, 20 ℃, one month) is less than 0.05g/m2H, thermal shock resistance 600 ℃/15 times, no crack and no drop.
Example 2:
60 g of aluminum powder (150-200 meshes), 200 g of pure ilmenite (150-200 meshes) and 13 g of SiO2Drying, mixing, placing into 20 steel tube with diameter of 108mm, thickness of 4mm and length of 150mm, fixing on tube making machine, starting ignition device when the rotation speed of centrifugal machine reaches 1250 rpm, and forming ceramic coating with thickness of 2mm on the inner wall of steel tube by reaction sintering. The surface of the ceramic layer is smooth and has no cracks, and the microhardness is more than or equal to 1200kg/mm2Density of 3.21g/cm3Thecrushing strength of the composite steel pipe is 300-330 Mpa, the shear strength is 20-25 Mpa, and the corrosion resistance (10% HCl, 20 ℃, one month) is less than 0.05g/m2H, thermal shock resistance 600 ℃/15 times, no crack and no drop.
Claims (4)
1. A process for preparing the composite ceramic steel pipe from Al and SiO2The manufacturing process comprises the steps of drying materials, proportioning, mixing, charging and ignition sintering, and is characterized in that: adding additive SiO into Al and pure TiFe mineral material2Filling the mixed material into steel pipe, igniting and centrifugingAnd performing reaction sintering to form a compact ceramic coating on the inner wall of the steel pipe.
2. The process for manufacturing a ceramic composite steel pipe as claimed in claim 1, wherein: the specific manufacturing method comprises the following steps:
(1) drying materials: mixing Al powder, pure ilmenite and SiO2Respectively baking at 38-75 ℃ for moisture removal, and detecting the absence of moisture;
(2) selecting materials: screening the raw materials by using a 150-200 mesh screen;
(3) preparing materials: calculating the total material amount according to the weight of the steel pipe, and mixing the materials according to the following proportion:
al and pure ilmenite in a ratio of 1: 2.5-3.5,
SiO2the addition amount is equal to the total weight of the raw materials multiplied by 4-5.5%;
(4) mixing materials: adding the three raw materials into a mixer and mixing uniformly;
(5) loading and pipe making: adding the mixed raw materials into a steel pipe, uniformly distributing the materials, starting the pipe making machine, igniting the steel pipe when the rotating speed of the pipe making machine reaches 85-90% of the specified rotating speed of 900-1600 revolutions, and performing reaction sintering under the action of centrifugal force to form a ceramic coating with a smooth surface on the inner wall of the steel pipe.
3. A process for manufacturing a ceramic composite steel tube as claimed in claim 1 or 2 wherein the material is kept dry without preheating prior to ignition.
4. The process for manufacturing a ceramic composite steel pipe as claimed in claim 1, wherein: pure ilmenite contains low-melting phase substances of Ca, Mg and Si in addition to iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01139228 CN1226451C (en) | 2001-12-26 | 2001-12-26 | Manufacturing process of ceramic composite steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01139228 CN1226451C (en) | 2001-12-26 | 2001-12-26 | Manufacturing process of ceramic composite steel pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1428460A CN1428460A (en) | 2003-07-09 |
| CN1226451C true CN1226451C (en) | 2005-11-09 |
Family
ID=4675152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01139228 Expired - Fee Related CN1226451C (en) | 2001-12-26 | 2001-12-26 | Manufacturing process of ceramic composite steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1226451C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106521283A (en) * | 2016-12-04 | 2017-03-22 | 丹阳市宸兴环保设备有限公司 | Anti-abrasion ceramic steel pipe composite material |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100345796C (en) * | 2006-04-18 | 2007-10-31 | 南京金陶耐磨管道有限公司 | Method for preparing thin-wall composite steel pipe with ceramic lining |
| CN102839370B (en) * | 2012-08-31 | 2014-06-25 | 中国兵器工业第五二研究所烟台分所 | Preparation method of ceramic composite steel tube |
| CN103062574B (en) * | 2012-12-26 | 2015-08-12 | 杨永利 | Cermet lining line pipe and preparation method |
-
2001
- 2001-12-26 CN CN 01139228 patent/CN1226451C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106521283A (en) * | 2016-12-04 | 2017-03-22 | 丹阳市宸兴环保设备有限公司 | Anti-abrasion ceramic steel pipe composite material |
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| Publication number | Publication date |
|---|---|
| CN1428460A (en) | 2003-07-09 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051109 Termination date: 20161226 |