CN202901553U - Corrosion-resistant stainless steel seamless steel tube for vessel - Google Patents
Corrosion-resistant stainless steel seamless steel tube for vessel Download PDFInfo
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- CN202901553U CN202901553U CN 201220298332 CN201220298332U CN202901553U CN 202901553 U CN202901553 U CN 202901553U CN 201220298332 CN201220298332 CN 201220298332 CN 201220298332 U CN201220298332 U CN 201220298332U CN 202901553 U CN202901553 U CN 202901553U
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- resistant stainless
- steel pipe
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Abstract
The utility model relates to the technical field of a stainless steel seamless steel tube in a metallurgical industry, in particular to a corrosion-resistant stainless steel seamless steel tube for a vessel for a vessel seawater pipeline. The corrosion-resistant stainless steel seamless steel tube for the vessel comprises a steel tube body with a hollow structure, wherein a polishing layer is arranged on the inner wall of the steel tube body. An acid-washing layer is arranged on the outer wall of the steel tube body, and a laser melting layer covers the outside of the acid-washing layer. The corrosion-resistant stainless steel seamless steel tube is strong in corrosion property, and combines characters of an OOCr24NI6Mo2N bidirectional stainless steel, so that the corrosion-resistant stainless steel seamless steel tube is better in properties of wear resistance and resistance to pressure, and has high mechanical strength and extensibility. The service life of the steel tube is prolonged.
Description
Technical field
The utility model relates to the stainless-steel seamless pipe technical field in the metallurgy industry, the especially a kind of warship that is applied to ships seawater pipeline corrosion-resistant stainless steel seamless steel pipe.
Background technique
Stainless-steel seamless pipe is common metallurgical fabricated metals, be applied in the market the ships seawater pipeline, because of its special environmental requirement, must possess preferably corrosion resistance, pitting corrosion resistance and anti-stress performance, although the steel pipe of common material can meet the basic demand of ships seawater pipeline substantially, overall performance is unsatisfactory, produce easily spot corrosion and grain boundary corrosion, cause the reduction of steel pipe mechanical intensity and extension property, so that steel pipe is shorter working life, price is also comparatively expensive simultaneously.
The model utility content
The technical problems to be solved in the utility model is: for overcoming the problem of above-mentioned existence, provide a kind of long service life, the warship that cost is low corrosion-resistant stainless steel seamless steel pipe.
The technological scheme that its technical problem that solves the utility model adopts is: a kind of warship corrosion-resistant stainless steel seamless steel pipe, the steel pipe body that comprises hollow structure, described steel pipe inner body wall has polishing layer, and described steel pipe body outer wall has the pickling layer, and the outer plating of pickling layer has the laser crucible zone.
The pickling layer is that seamless steel pipe forms by pickling, and the employing matched proportion density is HF:HNO
3: H
2The acid solution of O=1:1:10 was carried out pickling 5～6 hours when temperature is 60 ℃～80 ℃, not only guaranteed the cleanliness of Stainless Steel Tube, simultaneously the hazardous trace elements such as arsenic, tin, lead had also been done good processing.
The laser crucible zone is to adopt HGL-90 type 5kW cross-flow co2 laser to form through laser melting coating.The laser crucible zone is finer and closely woven, even, and the heat affected zone is narrower.Because laser power is high, the scan action time is short, rate of melting is fast after the heating of coatings and substrate top layer, Subcoold temperature is large when cooling off rapidly, alloying element in the molten bath can form multiple compounds rapidly and increase the quantity of non-spontaneous nucleation, nucleation rate is greatly improved, form tiny uniform microstructure.Organize the fine and closely woven Grain-boundary Junctions that improves to make a concerted effort reinforcing material intensity and toughness.Organize the fine and closely woven impurity content that has not only reduced on the unit crystal boundary, and the component segregation degree reduces in quick cooling procedure, thereby reduced because forming the impact of galvanic effect accelerated corrosion.
Further, the thickness of described laser crucible zone is 3mm～4mm.
Further, it is material that described steel pipe body adopts two-way stainless steel, mechanical property is apparently higher than the 316L stainless steel, anti-stress corrosion performance is strong, wear-resisting, resistance to pressure good, can bear the flow velocity of seawater more than 7m/s, well the strong sand body of Di Hang corrodes, tube wall surface can form stable passivating film, can self-healing even suffer to destroy also, and this stainless steel can not produce grain boundary corrosion, avoided because the steel pipe mechanical reduction of performance that grain boundary corrosion causes yet, prolong the working life of steel pipe, had good comprehensive process ability.
The beneficial effects of the utility model are, warship of the present utility model is stronger with corrosion-resistant stainless steel seamless steel pipe decay resistance, and in conjunction with two-way stainless characteristic, wear-resisting resistance to pressure is better, have higher mechanical strength and extensibility, prolong the working life of steel pipe.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is structural representation of the present utility model.
1. steel pipe bodies among the figure, 2. polishing layer, 3. pickling layer, 4. laser crucible zone.
Embodiment
By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic representation of simplification, basic structure of the present utility model only is described in a schematic way, so it only show the formation relevant with the utility model.
The corrosion-resistant stainless steel seamless steel pipe of warship as shown in Figure 1 comprises the steel pipe body 1 of hollow structure, and steel pipe body 1 inwall has polishing layer 2, and steel pipe body 1 outer wall has pickling layer 3, and pickling layer 3 outer plating have laser crucible zone 4.Pickling layer 3 is that seamless steel pipe forms by pickling, and the employing matched proportion density is HF:HNO
3: H
2The acid solution of O=1:1:10 was carried out pickling 5～6 hours when temperature is 60 ℃～80 ℃, not only guaranteed the cleanliness of Stainless Steel Tube, simultaneously the hazardous trace elements such as arsenic, tin, lead had also been done good processing.Laser cladding layer 4 is to adopt HGL-90 type 5kW cross-flow co2 laser to form through laser melting coating.The thickness of laser crucible zone 4 is 3mm～4mm.It is material that steel pipe body 1 adopts two-way stainless steel, mechanical property is apparently higher than the 316L stainless steel, anti-stress corrosion performance is strong, wear-resisting, resistance to pressure good, can bear the flow velocity of seawater more than 7m/s, well the strong sand body of Di Hang corrodes, tube wall surface can form stable passivating film, can self-healing even suffer to destroy also, and this stainless steel can not produce grain boundary corrosion, also avoided because the steel pipe mechanical reduction of performance that grain boundary corrosion causes, prolonged the working life of steel pipe, had a good comprehensive process ability.
Take above-mentioned foundation desirable embodiment of the present utility model as enlightenment, by above-mentioned description, the relevant staff can in the scope that does not depart from this model utility technological thought, carry out various change and modification fully.The technical scope of this model utility is not limited to the content on the specification, must determine its technical scope according to the claim scope.
Claims (2)
1. warship corrosion-resistant stainless steel seamless steel pipe, the steel pipe body (1) that comprises hollow structure, it is characterized in that: described steel pipe body (1) inwall has polishing layer (2), described steel pipe body (1) outer wall has pickling layer (3), and the outer plating of pickling layer (3) has laser crucible zone (4).
2. warship according to claim 1 corrosion-resistant stainless steel seamless steel pipe, it is characterized in that: the thickness of described laser crucible zone (4) is 3mm～4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220298332 CN202901553U (en) | 2012-06-21 | 2012-06-21 | Corrosion-resistant stainless steel seamless steel tube for vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220298332 CN202901553U (en) | 2012-06-21 | 2012-06-21 | Corrosion-resistant stainless steel seamless steel tube for vessel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202901553U true CN202901553U (en) | 2013-04-24 |
Family
ID=48122224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220298332 Expired - Fee Related CN202901553U (en) | 2012-06-21 | 2012-06-21 | Corrosion-resistant stainless steel seamless steel tube for vessel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202901553U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014176767A1 (en) * | 2013-05-01 | 2014-11-06 | 南通利杰船舶贸易有限公司 | Seamless steel pipe used in boating |
| CN112238517A (en) * | 2020-09-21 | 2021-01-19 | 浙江大大不锈钢有限公司 | Production process of high-pressure-resistance stainless steel seamless steel pipe |
-
2012
- 2012-06-21 CN CN 201220298332 patent/CN202901553U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014176767A1 (en) * | 2013-05-01 | 2014-11-06 | 南通利杰船舶贸易有限公司 | Seamless steel pipe used in boating |
| CN112238517A (en) * | 2020-09-21 | 2021-01-19 | 浙江大大不锈钢有限公司 | Production process of high-pressure-resistance stainless steel seamless steel pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20150621 |
|
| EXPY | Termination of patent right or utility model |