CN1047123C - Manufacturing method of composite pipe with ceramic lining - Google Patents
Manufacturing method of composite pipe with ceramic lining Download PDFInfo
- Publication number
- CN1047123C CN1047123C CN 97111352 CN97111352A CN1047123C CN 1047123 C CN1047123 C CN 1047123C CN 97111352 CN97111352 CN 97111352 CN 97111352 A CN97111352 A CN 97111352A CN 1047123 C CN1047123 C CN 1047123C
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- pipe
- ceramic lining
- sio2
- oxide
- thermite
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- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The present invention relates to a preparation method of a composite pipe with a ceramic lining, which adopts thermite with the simultaneous addition of SiO2 and at least one kind of the fluoride or the oxide of alkali metal or alkali earth metal. After homogeneously mixed materials are preheated, the temperature of the materials which are filled in a pipe by pressing is kept by a heat preservation medium; then, the materials are ignited so a self-spreading reaction occurs, liquid phase reaction products are separated by the difference of the own specific weights of the reaction products, and the dense ceramic lining is formed on the inner wall of the pipe. The present invention solves the problems of the prior art that the prior art is not suitable for preparing a pipe fitting with a small caliber, and the requirement for a centrifuge device is high; the present invention be suitable for preparing a bent pipe and a special pipe fitting; the prepared composite pipe has good wear resistance, corrosion resistance and high temperature resistance, the hardness HV of the ceramic lining is 1300-1500, and the density rho of the ceramic lining is 88 to 92 percent.
Description
The present invention relates to a kind of manufacture method of composite pipe with ceramic lining.
The Odawara of Japan in 1981 etc. adopt aluminothermic-centrifugalization to make ceramic-lined composite steel tube, and have applied for a series of patents: J58188591, J59218841, J59083983, J61079226, J61079777, J62086172, J63089680.Its basic principle is oxide generation vigorous reactions such as metallic elements such as Al, Mg and iron oxide, at the oxide ceramics product that does not have to react automatic spreading under the situation of external thermal source and obtain fusion, under action of centrifugal force, make the ceramic phase of product and metal separation and form ceramic layer in steel tube surface, Yin Sheng etc. have applied for that also relevant aluminothermic-centrifugalization prepares the patent of ceramic-lined composite steel tube, publication number is CN1059376A, obtains fine and close ceramic layer by adding additives such as feldspar, wollastonite.But aluminothermic-centrifugalization only is suitable for preparing the heavy caliber straight tube, and can not prepare bend pipe, shape tube or straight pipe with small diameter, and this method is very high to the speed and the required precision of centrifugation apparatus.
The objective of the invention is to by utilizing thermite and additive that self-propagating reaction takes place in tube chamber, separate by the difference of product self proportion and reach the purpose that overcomes the prior art deficiency.
General idea of the present invention is:
The manufacture method of composite pipe with ceramic lining is included in the tube cavity that places thermal insulation medium and adds thermite and additive SiO2 generation thermit reaction; Above-mentioned material pressurized filling in pipe and place in the thermal insulation medium, is lighted material generation self-propagating reaction, separate, form fine and close ceramic layer in the inside pipe wall cladding by the difference of reactant self proportion.
Concrete feature among the present invention is:
Also comprise at least a alkali metal or alkali earth metal fluoride or oxide in the above-mentioned material, the ratio of weight and number of above-mentioned material is:
Thermite 90-98 additive SiO2 2-8
Alkali metal or alkali earth metal fluoride or oxide 0.5-5
After inserting pipe interior thermite, additive SiO2, alkali metal or alkali earth metal fluoride or oxide preheating self-propagating reaction takes place, preheat temperature is 100-300 ℃.
Accompanying drawing of the present invention has;
Fig. 1 is a fundamental diagram of the present invention.
Below in conjunction with accompanying drawing embodiments of the invention are further described:
Embodiment 1:
Material proportion is 23.5% aluminium powder (100 order), 70%Fe2O3 powder (250 order), 4.5%SiO2,1%CaF2, above-mentioned material be through ball milling, adds after the drying to press fit into external diameter 25mm, wall thickness 3mm, in 18 ° of stainless steel elbows of long 450mm, steel pipe is clamped on the anchor clamps, forms the ceramic of compact layer of thick about 1.8mm with resistance wire electricity combustion material by self-propagating reaction at the steel pipe inwall.
Embodiment 2:
23%Al powder (100 order), 69%Fe2O3 powder (250 order), 5%SiO2,3%NaF, through ball milling, the external diameter 27mm that packs into after the drying, wall thickness 2.5mm, in the welding steel pipe of long 450mm, operating process such as embodiment 1, the final ceramic of compact coating that forms thick about 1.5mm at the steel pipe inwall.
The obtained technological progress of the present invention is:
Utilize the method for the invention not only can prepare the larger caliber straight tube, also can prepare small-bore pipe fitting, bend pipe And section tube and some other common metal and alloy pipe fitting, the multiple tube of preparing has good Wear-resisting, anti-corrosion, resistance to elevated temperatures, ceramic layer hardness HV is 1300-1500, density ρ=88%-92%, and production technology is simple, and with low cost.
Claims (3)
1, the manufacture method of composite pipe with ceramic lining is included in the tube cavity that places thermal insulation medium and adds thermite and additive SiO2 generation thermit reaction, will light as ceramic-lined material, forms fine and close ceramic layer in the inside pipe wall cladding; It is characterized in that above-mentioned material pressurized filling lighting material generation self-propagating reaction in pipe and place in the thermal insulation medium, separate by the difference of reactant self proportion.
2, manufacture method according to claim 1 is characterized in that also comprising at least a alkali metal or alkali earth metal fluoride or oxide in the above-mentioned material, and the ratio of weight and number of above-mentioned material is:
Thermite 90-98 additive SiO2 2-8
Alkali metal or alkali earth metal fluoride or oxide 0.5-5
Self-propagating reaction takes place after it is characterized in that inserting thermite, additive SiO2, alkali metal or alkali earth metal fluoride in the pipe or oxide preheating in 3, the manufacture method of multiple tube according to claim 1, and preheat temperature is 100-300 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97111352 CN1047123C (en) | 1997-05-30 | 1997-05-30 | Manufacturing method of composite pipe with ceramic lining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97111352 CN1047123C (en) | 1997-05-30 | 1997-05-30 | Manufacturing method of composite pipe with ceramic lining |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1168312A CN1168312A (en) | 1997-12-24 |
| CN1047123C true CN1047123C (en) | 1999-12-08 |
Family
ID=5171730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97111352 Expired - Fee Related CN1047123C (en) | 1997-05-30 | 1997-05-30 | Manufacturing method of composite pipe with ceramic lining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1047123C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110774411A (en) * | 2019-10-31 | 2020-02-11 | 杜永明 | Preparation method of ceramic lining composite pipe |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1106457C (en) * | 1997-12-25 | 2003-04-23 | 中国科学院兰州化学物理研究所 | Preparation technology of wear-resisting coating for surface of carbon steel |
| CN103160931A (en) * | 2011-12-09 | 2013-06-19 | 福州高意光学有限公司 | Heat-insulating cover structure for crystal growth furnace and production method for same |
| CN103658658B (en) * | 2013-12-12 | 2016-02-24 | 中联重科股份有限公司 | Concrete conveying equipment, manufacturing method of S pipe of concrete conveying equipment and SHS reactant |
| CN105351635B (en) * | 2015-08-26 | 2023-09-29 | 杨永利 | Metal ceramic composite pipe and manufacturing process thereof |
| CN110861331A (en) * | 2019-11-19 | 2020-03-06 | 樊伟 | Manufacturing method of aluminum butt welding type composite pipe |
-
1997
- 1997-05-30 CN CN 97111352 patent/CN1047123C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110774411A (en) * | 2019-10-31 | 2020-02-11 | 杜永明 | Preparation method of ceramic lining composite pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1168312A (en) | 1997-12-24 |
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