CN104862593A - Ferritic stainless steel seamless steel tube and preparation method thereof - Google Patents
Ferritic stainless steel seamless steel tube and preparation method thereof Download PDFInfo
- Publication number
- CN104862593A CN104862593A CN201510205879.8A CN201510205879A CN104862593A CN 104862593 A CN104862593 A CN 104862593A CN 201510205879 A CN201510205879 A CN 201510205879A CN 104862593 A CN104862593 A CN 104862593A
- Authority
- CN
- China
- Prior art keywords
- ferritic stainless
- steel tube
- seamless steel
- pickling
- steel pipe
- Prior art date
- 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.)
- Granted
Links
Landscapes
- Heat Treatment Of Steel (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention relates to a ferritic stainless steel seamless steel tube and a preparation method thereof. The ferritic stainless steel seamless steel tube comprises the following elements in mass percentage: C is less than or equal to 0.03 %, Si is 0.7-1.1%, Mn is less than or equal to 1%, P is less than or equal to 0.03%, S is less than or equal to 0.02 %, Cr is 17-19%, Ti is 0.2-0.4%, N is less than or equal to 0.025%, Cu is less than or equal to 0.25%, Al is 0.8-1.2% and the balance of Fe. The preparation method comprises the following steps: (a) hot rolling perforation; (b) first acid pickling and inspection; (c) lubrication; (d) cold drawing/cold rolling; (e) second acid pickling; (f) thermal processing; and (g) third acid pickling and inspection. Since the weight percentages of Si and Al in the component elements are improved, the inoxidizability of stainless steel is greatly improved, and stainless steel with high yield strength, low plasticity and 1.5 times of thermal conductivity of austenitic stainless steel is provided; according to the preparation method of the ferritic stainless steel seamless steel tube, all steps are linked with one another; the operation is relatively simple; and the ferritic stainless steel seamless steel tube is relatively low in cost.
Description
Technical field
The invention belongs to field of iron and steel, relate to a kind of weldless steel tube, be specifically related to a kind of ferritic stainless seamless steel tube and preparation method thereof.
Background technology
Steel Plant's blast furnace is equipment ore being refined into the pig iron.Have a large amount of high-temp waste gas to discharge in iron manufacturing process, making full use of the large energy contained in high-temp waste gas is the important step that ironmaking reduces costs.Therefore, a lot of Steel Plant, at Waste gas outlet mounting heat exchanger, are then exchanged the heat obtained and the wind of steel-making are carried out preheating by interchanger.The temperatures as high of Waste gas outlet 800 ~ 950 DEG C, and containing a large amount of sulfurous gas in waste gas; If use No. 20 common steel pipes, although heat transfer effect is better, it will soon damage under the impact of high temperature and etchant gas; If change the erosion-resisting austenitic stainless steel pipe of high temperature resistance into, the interchanger so made is expensive, and heat transfer effect obviously reduces.Therefore, in the urgent need to preparing a kind of stainless-steel seamless pipe while there is good heat transfer effect, lower cost, can also be anti-oxidant, anticorrosive.
Summary of the invention
The present invention seeks to provide a kind of ferritic stainless seamless steel tube to overcome the deficiencies in the prior art.
For achieving the above object, the technical solution adopted in the present invention is: a kind of ferritic stainless seamless steel tube, and the element weight percent of described ferritic stainless seamless steel tube is as follows, C :≤0.03%, Si:0.7 ~ 1.1%, Mn :≤1%, P :≤0.03%; S :≤0.02%, Cr:17 ~ 19%, Ti:0.2 ~ 0.4%, N :≤0.025%, Cu :≤0.25%, Al:0.8 ~ 1.2%, surplus is Fe.
Optimally, the element weight percent of described ferritic stainless seamless steel tube is as follows, C:0.03%, Si:0.7%, Mn:1%, P:0.03%; S:0.02%, Cr:17%, Ti:0.2%, N:0.025%, Cu:0.25%, Al:0.8%, surplus is Fe.
Optimally, the element weight percent of described ferritic stainless seamless steel tube is as follows, C:0.03%, Si:1.1%, Mn:1%, P:0.03%; S:0.02%, Cr:19%, Ti:0.4%, N:0.025%, Cu:0.25%, Al:1.2%, surplus is Fe.
Optimally, the element weight percent of described ferritic stainless seamless steel tube is as follows, C:0.03%, Si:1.0%, Mn:1%, P:0.03%; S:0.02%, Cr:18%, Ti:0.3%, N:0.025%, Cu:0.25%, Al:1.0%, surplus is Fe.
Another object of the present invention is the preparation method providing a kind of above-mentioned ferritic stainless seamless steel tube, and it comprises the following steps:
(a) hot-puncturing process: pipe is placed in 1150 ~ 1160 DEG C of insulations 30 ~ 60 minutes, before controlling top, rate of compression is 4.5 ~ 5.0% perforation, naturally cooling subsequently;
(b) first time pickling & inspection: steel pipe hydrofluoric acid obtained in step (a) and nitric acid mixing solutions are carried out pickling, adopt endoscope again, visual mode carries out Crack Detection to its surfaces externally and internally respectively, confirm that the surfaces externally and internally of steel pipe has leakless; Described pickling time is 30 ~ 60min, the mass concentration 2 ~ 3% of described hydrofluoric acid, and the mass concentration of described nitric acid is respectively 4 ~ 5%;
C () lubricates: do not have crannied steel pipe surfaces externally and internally brushing lubricant after detecting in step (b), be placed in 200 ~ 250 DEG C of oven dry; Described lubricant comprises industrial fat and liming;
(d) cold-drawn/cold rolling: carry out cold rolling in cold mill complex by the steel pipe obtained in step (c), in cold-rolled process, cold deformation controls within 60%;
(e) second time pickling: be carry out pickling in the salpeter solution of 4 ~ 5% by the steel pipe mass concentration obtained in step (d);
(f) thermal treatment: be placed in 780 ~ 820 DEG C of insulations 45 ~ 75 minutes, naturally cooling subsequently by obtaining steel pipe in step (e);
(g) third time pickling & inspection: the steel pipe obtained in step (f) described hydrofluoric acid and nitric acid mixing solutions are carried out pickling, and pickling time is 40min; Put in storage after carrying out nondestructive testing again after washing and drying.
Optimally, described lubricant comprises the component of following parts by weight: 1 ~ 3 part of No. 3 industrial fat and 8 ~ 15 parts of liming.
Optimally, in described step (a), first stamp internal point at pipe end face, centering when being convenient to bore a hole, is placed on subsequently with the heating rate to 800 DEG C of 8 ~ 10 DEG C/min in process furnace, then with 20 ~ 30 DEG C/min heating rate to 1150 ~ 1160 DEG C.
Because technique scheme is used, the present invention compared with prior art has following advantages: ferritic stainless seamless steel tube of the present invention, by promoting the weight percent of Si, Al in its component, stainless oxidation-resistance is significantly improved, there is provided and have high yield strength and low plasticity, thermal conductivity is 1.5 times of austenitic stainless steel; Each step of the preparation method of this ferritic stainless seamless steel tube is all linked with one another, and operation is comparatively simple, makes ferritic stainless seamless steel tube have lower cost.
Embodiment
Ferritic stainless seamless steel tube of the present invention, its element weight percent is as follows, C :≤0.03%, Si:0.7 ~ 1.1%, Mn :≤1%, P :≤0.03%; S :≤0.02%, Cr:17 ~ 19%, Ti:0.2 ~ 0.4%, N :≤0.025%, Cu :≤0.25%, Al:0.8 ~ 1.2%, surplus is Fe.By promoting the weight percent of Si, Al in its component, stainless oxidation-resistance significantly being improved, providing and having high yield strength and low plasticity, thermal conductivity is 1.5 times of austenitic stainless steel, is specially adapted on Steel Plant's blast furnace interchanger.Its element weight percent is preferably C:0.03%, Si:0.7%, Mn:1%, P:0.03%; S:0.02%, Cr:17%, Ti:0.2%, N:0.025%, Cu:0.25%, Al:0.8%, surplus is Fe; Or be preferably C:0.03%, Si:1.1%, Mn:1%, P:0.03%; S:0.02%, Cr:19%, Ti:0.4%, N:0.025%, Cu:0.25%, Al:1.2%, surplus is Fe, and this preferred ferritic stainless seamless steel tube performance is best, is because have the Ti element of high level, can promotes toughness and the intensity of whole material; Or be preferably C:0.03%, Si:1.0%, Mn:1%, P:0.03%; S:0.02%, Cr:18%, Ti:0.3%, N:0.025%, Cu:0.25%, Al:1.0%, surplus is Fe.
The preparation method of above-mentioned ferritic stainless seamless steel tube, it comprises the following steps: (a) hot-puncturing process: pipe is placed in 1150 ~ 1160 DEG C of insulations 30 ~ 60 minutes, and before controlling top, rate of compression is 4.5 ~ 5.0% perforation, naturally cooling subsequently; (b) first time pickling & inspection: steel pipe hydrofluoric acid obtained in step (a) and nitric acid mixing solutions are carried out pickling, adopt endoscope again, visual mode carries out Crack Detection to its surfaces externally and internally respectively, confirm that the surfaces externally and internally of steel pipe has leakless; Described pickling time is 30 ~ 60min, the mass concentration 2 ~ 3% of described hydrofluoric acid, and the mass concentration of described nitric acid is respectively 4 ~ 7%; C () lubricates: do not have crannied steel pipe surfaces externally and internally brushing lubricant after detecting in step (b), be placed in 200 ~ 250 DEG C of oven dry, described lubricant comprises industrial fat and liming, adopt industrial fat and liming can play the matrix of steel pipe and the buffer action of mould and lubrication on the one hand in lubricant, be also conducive to removing of subsequent step on the other hand; (d) cold-drawn/cold rolling: carry out cold rolling in cold mill complex by the steel pipe obtained in step (c), in cold-rolled process, cold deformation controls within 60%; (e) second time pickling: be carry out pickling in the salpeter solution of 4 ~ 5%, for removing lubricant by the steel pipe mass concentration obtained in step (d); (f) thermal treatment: be placed in 780 ~ 820 DEG C of insulations 45 ~ 75 minutes, naturally cooling subsequently by obtaining steel pipe in step (e); (g) third time pickling & inspection: the steel pipe obtained in step (f) described hydrofluoric acid and nitric acid mixing solutions are carried out pickling, and pickling time is 30 ~ 60min; Put in storage after carrying out nondestructive testing again after washing and drying.Lubricant preferably comprises the component of following parts by weight: 1 ~ 3 part of No. 3 industrial fat and 8 ~ 15 parts of saturated limewaters, and the mixing of these two kinds of materials can work in coordination with reduction friction; And the effect removing No. 3 industrial fat after drying is best, reduce the time of follow-up second time pickling, only need 30 ~ 60 minutes.Be preferably in step (a), first stamp internal point at pipe end face, centering when being convenient to bore a hole, is conducive to the quality of boring a hole; To be placed on subsequently with the heating rate to 800 DEG C of 8 ~ 10 DEG C/min in process furnace, then with 20 ~ 30 DEG C/min heating rate to 1150 ~ 1160 DEG C, can to guarantee that pipe has uniform temperature before perforation in insulation 30 ~ 60 minutes like this.
Below the preferred embodiment of the invention is described in detail:
Embodiment 1
The present embodiment provides a kind of ferritic stainless seamless steel tube, its element weight percent following C:0.03%, Si:0.7%, Mn:1%, P:0.03%; S:0.02%, Cr:17%, Ti:0.2%, N:0.025%, Cu:0.25%, Al:0.8%, surplus is Fe; Its preparation method comprises the following steps:
(a) hot-puncturing process: pipe is placed in 1150 DEG C of insulations 60 minutes, controlling the front rate of compression in top is 4.5% perforation, subsequently naturally cooling;
(b) first time pickling & inspection: steel pipe hydrofluoric acid obtained in step (a) and nitric acid mixing solutions are carried out pickling, adopt endoscope again, visual mode carries out Crack Detection to its surfaces externally and internally respectively, confirm that the surfaces externally and internally of steel pipe has leakless; Described pickling time is 30min, the mass concentration 2% of described hydrofluoric acid, and the mass concentration of described nitric acid is respectively 4%;
C () lubricates: do not have crannied steel pipe surfaces externally and internally brushing lubricant after detecting in step (b), be placed in 200 DEG C of oven dry; Described lubricant comprises 1 part of No. 3 industrial fat and 8 parts of saturated limewaters (parts by weight);
(d) cold-drawn/cold rolling: carry out cold rolling in cold mill complex by the steel pipe obtained in step (c), in cold-rolled process, cold deformation controls within 60%;
(e) second time pickling: be carry out pickling in the salpeter solution of 4% 30 minutes by the steel pipe mass concentration obtained in step (d);
(f) thermal treatment: be placed in 820 DEG C of insulations 45 minutes, naturally cooling subsequently by obtaining steel pipe in step (e);
(g) third time pickling & inspection: the steel pipe obtained in step (f) described hydrofluoric acid and nitric acid mixing solutions are carried out pickling, and pickling time is 40min; Put in storage after carrying out nondestructive testing again after washing and drying.
Embodiment 2
The present embodiment provides a kind of ferritic stainless seamless steel tube, and its element weight percent is as follows, C:0.03%, Si:1.1%, Mn:1%, P:0.03%; S:0.02%, Cr:19%, Ti:0.4%, N:0.025%, Cu:0.25%, Al:1.2%, surplus is Fe; Its preparation method comprises the following steps:
(a) hot-puncturing process: first stamp internal point (when being convenient to bore a hole centering) at pipe end face, be placed on subsequently in process furnace with the heating rate to 800 DEG C of 8 DEG C/min, 1160 DEG C are heated to by 800 DEG C again with 20 DEG C/min speed, be incubated 30 minutes, controlling the front rate of compression in top is 5.0% perforation, subsequently naturally cooling;
(b) first time pickling & inspection: steel pipe hydrofluoric acid obtained in step (a) and nitric acid mixing solutions are carried out pickling, adopt endoscope again, visual mode carries out Crack Detection to its surfaces externally and internally respectively, confirm that the surfaces externally and internally of steel pipe has leakless; Described pickling time is 60min, the mass concentration 3% of described hydrofluoric acid, and the mass concentration of described nitric acid is respectively 7%;
C () lubricates: do not have crannied steel pipe surfaces externally and internally brushing lubricant after detecting in step (b), be placed in 250 DEG C of oven dry; Described lubricant comprises 3 parts of No. 3 industrial fat and 15 parts of saturated limewaters (parts by weight);
(d) cold-drawn/cold rolling: carry out cold rolling in cold mill complex by the steel pipe obtained in step (c), in cold-rolled process, cold deformation controls within 60%;
(e) second time pickling: be carry out pickling in the salpeter solution of 5% 30 minutes by the steel pipe mass concentration obtained in step (d);
(f) thermal treatment: be placed in 780 DEG C of insulations 75 minutes, naturally cooling subsequently by obtaining steel pipe in step (e);
(g) third time pickling & inspection: the steel pipe obtained in step (f) described hydrofluoric acid and nitric acid mixing solutions are carried out pickling, and pickling time is 40min; Put in storage after carrying out nondestructive testing again after washing and drying.
Embodiment 3
The present embodiment provides a kind of ferritic stainless seamless steel tube, its element weight percent following C:0.03%, Si:1.0%, Mn:1%, P:0.03%; S:0.02%, Cr:18%, Ti:0.3%, N:0.025%, Cu:0.25%, Al:1.0%, surplus is Fe; Its preparation method comprises the following steps:
(a) hot-puncturing process: first stamp internal point (when being convenient to bore a hole centering) at pipe end face, be placed on subsequently in process furnace with the heating rate to 800 DEG C of 10 DEG C/min, 1155 DEG C are heated to by 800 DEG C again with 30 DEG C/min speed, be incubated 15 minutes, controlling the front rate of compression in top is 4.8% perforation, subsequently naturally cooling;
(b) first time pickling & inspection: steel pipe hydrofluoric acid obtained in step (a) and nitric acid mixing solutions are carried out pickling, adopt endoscope again, visual mode carries out Crack Detection to its surfaces externally and internally respectively, confirm that the surfaces externally and internally of steel pipe has leakless; Described pickling time is 1h, the mass concentration 2.5% of described hydrofluoric acid, and the mass concentration of described nitric acid is respectively 7%;
C () lubricates: do not have crannied steel pipe surfaces externally and internally brushing lubricant after detecting in step (b), be placed in 220 DEG C of oven dry; Described lubricant comprises 2 parts of No. 3 industrial fat and 10 parts of liming;
(d) cold-drawn/cold rolling: carry out cold rolling in cold mill complex by the steel pipe obtained in step (c), in cold-rolled process, cold deformation controls within 60%;
(e) second time pickling: be carry out pickling in the salpeter solution of 4.5% 40 minutes by the steel pipe mass concentration obtained in step (d);
(f) thermal treatment: be placed in 800 DEG C of insulations 50 minutes, naturally cooling subsequently by obtaining steel pipe in step (e);
(g) third time pickling & inspection: the steel pipe obtained in step (f) described hydrofluoric acid and nitric acid mixing solutions are carried out pickling, and pickling time is 40min; Put in storage after carrying out nondestructive testing again after washing and drying.
Above-described embodiment is only for illustrating technical conceive of the present invention and feature; its object is to person skilled in the art can be understood content of the present invention and implement according to this; can not limit the scope of the invention with this; all equivalences done according to spirit of the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (7)
1. a ferritic stainless seamless steel tube, is characterized in that: the element weight percent of described ferritic stainless seamless steel tube is as follows, C :≤0.03%, Si:0.7 ~ 1.1%, Mn :≤1%, P :≤0.03%; S :≤0.02%, Cr:17 ~ 19%, Ti:0.2 ~ 0.4%, N :≤0.025%, Cu :≤0.25%, Al:0.8 ~ 1.2%, surplus is Fe.
2. ferritic stainless seamless steel tube according to claim 1, is characterized in that: the element weight percent of described ferritic stainless seamless steel tube is as follows, C:0.03%, Si:0.7%, Mn:1%, P:0.03%; S:0.02%, Cr:17%, Ti:0.2%, N:0.025%, Cu:0.25%, Al:0.8%, surplus is Fe.
3. ferritic stainless seamless steel tube according to claim 1, is characterized in that: the element weight percent of described ferritic stainless seamless steel tube is as follows, C:0.03%, Si:1.1%, Mn:1%, P:0.03%; S:0.02%, Cr:19%, Ti:0.4%, N:0.025%, Cu:0.25%, Al:1.2%, surplus is Fe.
4. ferritic stainless seamless steel tube according to claim 1, is characterized in that: the element weight percent of described ferritic stainless seamless steel tube is as follows, C:0.03%, Si:1.0%, Mn:1%, P:0.03%; S:0.02%, Cr:18%, Ti:0.3%, N:0.025%, Cu:0.25%, Al:1.0%, surplus is Fe.
5. the preparation method of arbitrary described ferritic stainless seamless steel tube in Claims 1-4, it is characterized in that, it comprises the following steps:
(a) hot-puncturing process: pipe is placed in 1150 ~ 1160 DEG C of insulations 30 ~ 60 minutes, before controlling top, rate of compression is 4.5 ~ 5.0% perforation, naturally cooling subsequently;
(b) first time pickling & inspection: steel pipe hydrofluoric acid obtained in step (a) and nitric acid mixing solutions are carried out pickling, adopt endoscope again, visual mode carries out Crack Detection to its surfaces externally and internally respectively, confirm that the surfaces externally and internally of steel pipe has leakless; Described pickling time is 30 ~ 60min, the mass concentration 2 ~ 3% of described hydrofluoric acid, and the mass concentration of described nitric acid is respectively 4 ~ 7%;
C () lubricates: do not have crannied steel pipe surfaces externally and internally brushing lubricant after detecting in step (b), be placed in 200 ~ 250 DEG C of oven dry; Described lubricant comprises industrial fat and liming;
(d) cold-drawn/cold rolling: carry out cold rolling in cold mill complex by the steel pipe obtained in step (c), in cold-rolled process, cold deformation controls within 60%;
(e) second time pickling: be carry out pickling in the salpeter solution of 4 ~ 5% by the steel pipe mass concentration obtained in step (d);
(f) thermal treatment: be placed in 780 ~ 820 DEG C of insulations 45 ~ 75 minutes, naturally cooling subsequently by obtaining steel pipe in step (e);
(g) third time pickling & inspection: the steel pipe obtained in step (f) described hydrofluoric acid and nitric acid mixing solutions are carried out pickling, and pickling time is 30 ~ 60min; Put in storage after carrying out nondestructive testing again after washing and drying.
6. the preparation method of ferritic stainless seamless steel tube according to claim 5, is characterized in that: described lubricant comprises the component of following parts by weight: 1 ~ 3 part of No. 3 industrial fat and 8 ~ 15 parts of liming.
7. the preparation method of ferritic stainless seamless steel tube according to claim 5, it is characterized in that: in described step (a), first stamp internal point at pipe end face, be placed on subsequently with the heating rate to 800 DEG C of 8 ~ 10 DEG C/min in process furnace, then with 20 ~ 30 DEG C/min heating rate to 1150 ~ 1160 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510205879.8A CN104862593B (en) | 2015-04-28 | 2015-04-28 | The preparation method of ferritic stainless seamless steel tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510205879.8A CN104862593B (en) | 2015-04-28 | 2015-04-28 | The preparation method of ferritic stainless seamless steel tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104862593A true CN104862593A (en) | 2015-08-26 |
| CN104862593B CN104862593B (en) | 2016-10-05 |
Family
ID=53908755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510205879.8A Active CN104862593B (en) | 2015-04-28 | 2015-04-28 | The preparation method of ferritic stainless seamless steel tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104862593B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108176728A (en) * | 2018-01-23 | 2018-06-19 | 苏州钢特威钢管有限公司 | The preparation method of 1Cr25Ti high chromium content ferrite stainless steel seamless pipes |
| CN109328120A (en) * | 2016-06-24 | 2019-02-12 | 山特维克原料技术德国公开股份有限公司 | Method for the ducted body of ferrite FeCrAl alloy to be shaped to pipe |
| CN111060670A (en) * | 2019-12-18 | 2020-04-24 | 无锡隆达金属材料有限公司 | Method for detecting crack defects on inner surface of nickel-based alloy pierced billet by acid cleaning |
| CN111542628A (en) * | 2017-12-27 | 2020-08-14 | 山特维克知识产权股份有限公司 | Method for straightening FeCrAl alloy tube |
| CN112605148A (en) * | 2020-11-26 | 2021-04-06 | 衡阳鸿常机化有限公司 | Manufacturing process of seamless steel tube for seawater |
| CN114752941A (en) * | 2022-04-15 | 2022-07-15 | 江苏正泰不锈钢产业有限公司 | Preparation method of ferritic stainless steel seamless steel pipe |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11302786A (en) * | 1998-04-22 | 1999-11-02 | Nippon Steel Corp | Low yield ratio high strength thick seamless steel pipe and its production |
| CN1542156A (en) * | 2003-04-30 | 2004-11-03 | 王光煌 | High-silicon high-aluminium ferrite stainless steel and its application in preparation of heat-resisting steel pipe |
| CN101530869A (en) * | 2008-03-14 | 2009-09-16 | 钱乐中 | Process for manufacturing stainless-steel seamless steel pipe used for high-pressure boiler, boiler and heat-exchanger |
-
2015
- 2015-04-28 CN CN201510205879.8A patent/CN104862593B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11302786A (en) * | 1998-04-22 | 1999-11-02 | Nippon Steel Corp | Low yield ratio high strength thick seamless steel pipe and its production |
| CN1542156A (en) * | 2003-04-30 | 2004-11-03 | 王光煌 | High-silicon high-aluminium ferrite stainless steel and its application in preparation of heat-resisting steel pipe |
| CN101530869A (en) * | 2008-03-14 | 2009-09-16 | 钱乐中 | Process for manufacturing stainless-steel seamless steel pipe used for high-pressure boiler, boiler and heat-exchanger |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109328120A (en) * | 2016-06-24 | 2019-02-12 | 山特维克原料技术德国公开股份有限公司 | Method for the ducted body of ferrite FeCrAl alloy to be shaped to pipe |
| US10882090B2 (en) | 2016-06-24 | 2021-01-05 | Sandvik Materials Technology Deutschland Gmbh | Method for forming a hollow of a ferritic FeCrAl alloy into a tube |
| CN111542628A (en) * | 2017-12-27 | 2020-08-14 | 山特维克知识产权股份有限公司 | Method for straightening FeCrAl alloy tube |
| US20200360978A1 (en) * | 2017-12-27 | 2020-11-19 | Sandvik Intellectual Property Ab | A method for straightening of a FeCrAl alloy tube |
| US11724299B2 (en) * | 2017-12-27 | 2023-08-15 | Sandvik Intellectual Property Ab | Method for straightening of a FeCrAl alloy tube |
| CN108176728A (en) * | 2018-01-23 | 2018-06-19 | 苏州钢特威钢管有限公司 | The preparation method of 1Cr25Ti high chromium content ferrite stainless steel seamless pipes |
| CN108176728B (en) * | 2018-01-23 | 2019-06-07 | 苏州钢特威钢管有限公司 | The preparation method of 1Cr25Ti high chromium content ferrite stainless steel seamless pipe |
| CN111060670A (en) * | 2019-12-18 | 2020-04-24 | 无锡隆达金属材料有限公司 | Method for detecting crack defects on inner surface of nickel-based alloy pierced billet by acid cleaning |
| CN111060670B (en) * | 2019-12-18 | 2022-06-10 | 江苏隆达超合金股份有限公司 | Method for detecting crack defects on inner surface of nickel-based alloy pierced billet by acid washing |
| CN112605148A (en) * | 2020-11-26 | 2021-04-06 | 衡阳鸿常机化有限公司 | Manufacturing process of seamless steel tube for seawater |
| CN114752941A (en) * | 2022-04-15 | 2022-07-15 | 江苏正泰不锈钢产业有限公司 | Preparation method of ferritic stainless steel seamless steel pipe |
| CN114752941B (en) * | 2022-04-15 | 2023-01-10 | 江苏正泰不锈钢产业有限公司 | Preparation method of ferritic stainless steel seamless steel pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104862593B (en) | 2016-10-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104862593A (en) | Ferritic stainless steel seamless steel tube and preparation method thereof | |
| CN101623719B (en) | Method for manufacturing stainless steel heat transfer pipe of nuclear heat exchanger | |
| CN106544494B (en) | A kind of online soft annealing method suitable for 1Cr17Ni2 stainless steel cold pull wires | |
| CN105132666A (en) | Pickling-free continuous annealing furnace reducing gas recycle use system and use method thereof | |
| CN104894485A (en) | Production method of nuclear power plant used high-temperature-resisting brittleness-resisting seamless steel tube with outer diameter of more than 508mm | |
| CN102560057B (en) | Heat treatment process method and system for hot rolled seamless steel tubes | |
| CN104493027A (en) | Technology for forging duplex stainless steel | |
| CN103643155B (en) | A kind of working method of fast quench prestress wire | |
| CN104745935A (en) | Production method for cold-rolled steel sheet with excellent stamping property | |
| CN104831179A (en) | High-temperature resistant seamless austenitic stainless steel pipe and preparation method thereof | |
| CN103639402B (en) | The manufacture method of the coated prestress wire of a kind of nichrome powder | |
| CN105170665B (en) | Method for removing iron oxide scale from surface of strip steel efficiently | |
| CN105274429A (en) | Production method for alloy filament | |
| CN103740912A (en) | Processing method for improving temper embrittlement resistance of steel plate for pressure vessels | |
| CN104831267B (en) | Cold-rolled orientation silicon steel magnesium oxide coating production technology | |
| CN102107210A (en) | Method for producing stainless steel band of heating pipe | |
| CN103741078A (en) | Remained heat treatment steel bar production process | |
| CN107653367A (en) | The manufacture method of electrothermal tube corrosion resistant alloy cold-rolled strip | |
| CN103121034B (en) | Super duplex stainless steel ingot hot working cogging method | |
| CN104846237A (en) | Manufacturing method of Ni-Fe-Cr-Mo anticorrosive alloy tube blank | |
| CN105525228A (en) | Nuclear safety grade 316L stainless steel gauge pipe | |
| CN101691642A (en) | Sulfuric acid dew point corrosion-resistant steel and production process thereof | |
| CN103308514A (en) | Method for detecting carbide nonuniformity of tool steel by annealed room-temperature etching method | |
| CN106269980A (en) | A kind of preparation technology of seamless steel pipe | |
| CN103643167B (en) | A kind of working method of 700MPa level Green heat treatment high strength cast iron |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |