CN1193087A - Method for producing heat-resistant and etching-resistant alloy composite steel pipe - Google Patents
Method for producing heat-resistant and etching-resistant alloy composite steel pipe Download PDFInfo
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- CN1193087A CN1193087A CN97100649A CN97100649A CN1193087A CN 1193087 A CN1193087 A CN 1193087A CN 97100649 A CN97100649 A CN 97100649A CN 97100649 A CN97100649 A CN 97100649A CN 1193087 A CN1193087 A CN 1193087A
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- steel pipe
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- corrosion
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Abstract
The method for manufacturing heat-resistant corrosion-resistant alloy composite steel pipe is characterized by directly applying alloy-transforming agent to the internal and external surfaces of general carbon-steel steel pipe instead of independently preparing heat-resistant corrosion-resistant alloy band material to make the iron metal element being in the steel pipe base body and alloy-transforming agent implement high-temp. alloying reaction to produce ferrous pentacalorized heat-resistant corrosion-resistant alloy phase, so that said invention is successful in recombination of fine-long steel tube (minimum diameter can be up to 10 mm) and heat-resistant corrosion-resistant alloy. Its technological process is simple, product can resist high temp of above 1000 deg.C and oxidation, and possesses good properties of resisting high temp and resisting hydrogen sulfide corrosion.
Description
The present invention relates to the manufacture method of heat-resistant and etching-resistant alloy composite steel pipe, belong to the metal surface alloy processing.The existing method of making the heat-resistant and etching-resistant alloy steel pipe all is in the melting and casting mode, and the cost costliness may not produced diameter below 30 millimeters, the elongated steel pipe that length is 8 meters.
The present invention is on the matrix surface of Ordinary Steel pipe, and coating alloy transforming agent is handled through high-temperature alloy, generates Fe
2Al
5The intermetallic compounds composite bed without any need for melting, cast operation, is once finished the manufacturing of heat-proof corrosion-resistant composite steel tube.
Owing to adopt method at the steel tube surface alloy reaction, simplified manufacturing process greatly, and composite bed thickness can control arbitrarily, save alloy material significantly, can make the tubing of 30 millimeters following random lengthss of diameter.
The inventive method comprises:
1, cleaning Ordinary Steel tube-surface, and make it have the anti-oxidant alloying power that helps, operating process is carried out continuously.
2, even coated alloy transforming agent, coating layer thickness generally is controlled at the 1.5-2 millimeter, and operating process is carried out continuously.
3, with the steel pipe of coated alloy agent at high temperature (1000 ℃) carry out Alloying Treatment.
Goods physicochemical property of the present invention is listed in the table below:
High temperature oxidation speed (gram/rice
2, hour)
| Material | ????900℃ | ????1050℃ |
| Heat-resistant and etching-resistant alloy composite steel pipe | ????0.1653 | ????0.1941 |
| The straight carbon steel steel pipe | ????21.2615 | ????35.3452 |
Rate of corrosion (gram/rice in hydrogen sulfide medium
2, hour)
| Material | ?6％H 2S-500℃ | ?6％H 2S-700℃ |
| Heat-resistant and etching-resistant alloy composite steel pipe | ????0.0145 | ????0.0334 |
| The straight carbon steel steel pipe | ????0.4254 | ????0.6122 |
Goods of the present invention are used for Electrosmelting Of Steel oxygen blast use and the results are shown in following table:
| Material | Average consumption MM/ branch during oxygen blast | Melting consumption per ton of steel kg/T |
| Heat-resistant and etching-resistant alloy composite steel pipe | ???????????129 | ?????????0.31 |
| The straight carbon steel steel pipe | ???????????1081 | ?????????3.82 |
The embodiment of the invention:
At the diameter that has carried out the degreasing and rust removal processing is 20 millimeters, on the steel tube surface that wall thickness is 2 millimeters, coating activation soldering flux, the alloy transforming agent that the even coating thickness average out in dry back is 1.5 millimeters, form hard coating, make it, be cooled to room temperature continuously by heating maintenance a period of time of about 1000 ℃, handle through finishing, produce heat-resistant and etching-resistant alloy composite steel pipe.
Claims (2)
1, a kind of method of making heat-resistant and etching-resistant alloy composite steel pipe is characterized in that, makes matrix with the straight carbon steel steel pipe, and the even coated alloy transforming agent in the surface forms hard thick coating, and heating at high temperature produces alloying reaction, and it mainly is Fe that the metallographic of alloy-layer is formed
2Al
50
2,, it is characterized in that high temperature used in the described method is heated to be the steel pipe induction heating according to the method for claim l.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97100649A CN1193087A (en) | 1997-03-07 | 1997-03-07 | Method for producing heat-resistant and etching-resistant alloy composite steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97100649A CN1193087A (en) | 1997-03-07 | 1997-03-07 | Method for producing heat-resistant and etching-resistant alloy composite steel pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1193087A true CN1193087A (en) | 1998-09-16 |
Family
ID=5165211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97100649A Pending CN1193087A (en) | 1997-03-07 | 1997-03-07 | Method for producing heat-resistant and etching-resistant alloy composite steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1193087A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1306208C (en) * | 2001-05-16 | 2007-03-21 | 菲利浦石油公司 | Method for inhibiting external corrosion on insulated pipeline |
| CN103722346A (en) * | 2013-12-25 | 2014-04-16 | 江苏玉龙钢管股份有限公司 | Corrosion-resistant metallurgical composite bimetal longitudinal submerged-arc welded steel pipe and method for manufacturing same |
| US11459527B2 (en) | 2017-11-30 | 2022-10-04 | Colgate-Palmolive Company | Cleansing compositions and use thereof |
-
1997
- 1997-03-07 CN CN97100649A patent/CN1193087A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1306208C (en) * | 2001-05-16 | 2007-03-21 | 菲利浦石油公司 | Method for inhibiting external corrosion on insulated pipeline |
| CN103722346A (en) * | 2013-12-25 | 2014-04-16 | 江苏玉龙钢管股份有限公司 | Corrosion-resistant metallurgical composite bimetal longitudinal submerged-arc welded steel pipe and method for manufacturing same |
| CN103722346B (en) * | 2013-12-25 | 2016-06-01 | 江苏玉龙钢管股份有限公司 | A kind of corrosion resistance metallurgical composite bimetal longitudinal submerged arc welded pipe and preparation method |
| US11459527B2 (en) | 2017-11-30 | 2022-10-04 | Colgate-Palmolive Company | Cleansing compositions and use thereof |
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