CN103361536B - Fully-austenitic low-carbon nickel-iron-chromium alloy seamless pipe - Google Patents
Fully-austenitic low-carbon nickel-iron-chromium alloy seamless pipe Download PDFInfo
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Abstract
The invention discloses a fully-austenitic low-carbon nickel-iron-chromium alloy seamless pipe. The seamless pipe comprises the following components: iron, nickel, chromium, aluminum, titanium, carbon, vanadium, silicon, zinc, phosphorus and sulfur. The seamless pipe is manufactured in the following steps: (1) detecting a blank, and thermally processing; (2) annealing the blank, and then pickling for the first time; (3) grinding the blank, lubricating, cold drawing, rolling and deoiling; (4) judging whether the blank is manufactured into a finished product, and carrying out solid solution heat treatment on the finished product if the obtained blank meets the a finished product standard; (5) otherwise, carrying out solid solution heat treatment on an intermediate product, straightening, cutting at fixed length, pickling and repeating the step (3); and (6) detecting the finished product, spraying words, packing the finished product, weighing and delivering from storage. The seamless pipe disclosed by the invention has good surface corrosion resistance, excellent performance standard and low manufacturing cost and is simple in manufacturing process.
Description
Technical field
The present invention relates to a kind of manufacture of seamless tube, be specifically related to a kind of full austenite low-carbon ferronickel Chrome metal powder seamless tube.
Background technology
Incoloy800HT alloy is Ni-Fe-Chrome metal powder that is a kind of and the isonomic full austenite low-carbon (LC) of Incoloy 800 alloy.The a lot of corrosive medium corrosion of Incoloy800HT alloy ability.Its higher Ni content makes it under aqueous caustic condition, have good stress-corrosion-cracking resistance.High-Cr makes it to have better resistance to pitting attack and crevice corrosion cracking performance.This alloy has good resistance to nitric acid, organic acid corrodibility, but the erosion resistance in sulfuric acid and hydrochloric acid is limited.Except except halogenide likely origination point corrosion, in oxidisability and non-oxidizable salt, 800HT has good erosion resistance.Also the erosion resistance had in the mixture of water, steam and steam, air, carbonic acid gas.Because austenite has comprehensive and good over-all properties, obtain a wide range of applications in all trades and professions, this all makes traditional austenite seamless tube reach requirement, the making method of traditional seamless tube makes the Ni-Fe-Chrome metal powder seamless tube of full austenite low-carbon (LC), not only waste resource, and complex procedures.
Summary of the invention
The object of the present invention is to provide a kind of seamless tube surface corrosion resistance to improve, superior product performance standards, reduce cost of manufacture and operation simple full austenite low-carbon ferronickel Chrome metal powder seamless tube.
Technical scheme of the present invention is, a kind of full austenite low-carbon ferronickel Chrome metal powder seamless tube, described full austenite low-carbon ferronickel Chrome metal powder seamless tube comprises by weight percentage: iron is 28%-41%, nickel is 30%-34%, chromium is 18%-22%, aluminium is 4.3%-6.8%, titanium is 5.2%-6.9%, carbon is 0.05%-0.12%, and vanadium is 0.11%-0.32%, and silicon is 0.47%-0.53%, zinc is 0.8%-1.2%, phosphorus is 0.03%-0.06%, and sulphur is 0.04%-0.07%, and the manufacturing step of described full austenite low-carbon ferronickel Chrome metal powder seamless tube comprises:
(1) first blank is tested and hot-work is carried out to blank,
(2) blank after hot-work is carried out anneal, carries out first time pickling after the annealing process,
(3) blank after pickling is carried out reconditioning, lubrication, cold drawing and rolling and process of deoiling,
(4) judge whether to meet finished product, then carry out finished product solution heat treatment, aligning, Ding Qie and pickling in this way,
(5) if not being, carrying out middle product solution heat treatment, aligning, surely cutting, pickling repeating step (3),
(6) end product is tested, and sprays word, packs, weighs and outbound.
In a preferred embodiment of the present invention, in described hot procedure, hot processing temperature is 900 DEG C-1200 DEG C, and the soaking time of described material is that the thickness of every 100mm is incubated 60 minutes.
In a preferred embodiment of the present invention, the type of cooling of described anneal is shrend or cools fast between 540 DEG C-760 DEG C.
In a preferred embodiment of the present invention, it is 920 DEG C-980 DEG C that described finished product fixes heat treated temperature.
In a preferred embodiment of the present invention, the temperature of described middle product solution heat treatment is 960 DEG C-1010 DEG C.
In a preferred embodiment of the present invention, the blank that in described finished product solution heat treatment process, thickness is less than 1.5mm adopts the mode of quick air cooling to cool.
Of the present invention is a kind of full austenite low-carbon ferronickel Chrome metal powder seamless tube, improves full austenite low-carbon ferronickel Chrome metal powder seamless tube surface corrosion resistance energy, and the superior standard of performance of seamless tube, reduce the cost of manufacture of seamless tube, and production process is simple.
Accompanying drawing explanation
Fig. 1 be a preferred embodiment of the present invention process flow diagram.
Embodiment
Below preferred embodiment of the present invention is described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
Of the present invention is a kind of full austenite low-carbon ferronickel Chrome metal powder seamless tube, shown in Figure 1, the step of described full austenite low-carbon ferronickel Chrome metal powder seamless tube manufacture method comprises (1) and first tests to blank and carry out hot-work to blank, (2) blank after hot-work is carried out anneal, carry out first time pickling after the annealing process, (3) blank after pickling is carried out reconditioning, lubrication, cold drawing and rolling and process of deoiling, (4) judge whether to meet finished product, then carry out finished product solution heat treatment in this way, aligning, surely cut and pickling, (5) if not being, middle product solution heat treatment is carried out, aligning, surely cut, pickling repeating step (3), (6) end product is tested, spray word, packaging, weigh and outbound.
Described full austenite low-carbon ferronickel Chrome metal powder seamless tube comprises by weight percentage: iron is 28%-41%, nickel is 30%-34%, chromium is 18%-22%, and aluminium is 4.3%-6.8%, and titanium is 5.2%-6.9%, carbon is 0.05%-0.12%, vanadium is 0.11%-0.32%, and silicon is 0.47%-0.53%, and zinc is 0.8%-1.2%, phosphorus is 0.03%-0.06%, and sulphur is 0.04%-0.07%.
Further illustrate, the type of cooling of described anneal is shrend or cools fast between 540 DEG C-760 DEG C.It is 920 DEG C-980 DEG C that described finished product fixes heat treated temperature.The temperature of described middle product solution heat treatment is 960 DEG C-1010 DEG C.The blank that in described finished product solution heat treatment process, thickness is less than 1.5mm adopts the mode of quick air cooling to cool.
Further illustrate, before the heat treatment and should remain in heat treatment process workpiece clean.Sulphur, phosphorus, lead and other low melting point metal can not be contacted in heat treatment process, otherwise the performance of material can be damaged, should notice that removing such as marks the dirts such as paint, thermoindicator paint, coloured oiled crayon, lubricating oil, fuel.Sulphur content in fuel is more low better, and the sulphur content in Sweet natural gas should be less than 0.1%, and sulfur in heavy oil content should be less than 0.5%.Consider that temperature controls and keeps clean needs, preferably heat-treat in vacuum oven or gas shield stove.Also can heat in box-type furnace or gas furnace, but furnace gas must be clean and be advisable to micro-oxygenation with neutrality, furnace gas should be avoided to fluctuate between oxidisability and reductibility, and heating flame can not directly burn to workpiece.
Further illustrate again; full austenite low-carbon ferronickel Chrome metal powder seamless tube is applicable to adopting the welding of any conventional bonding technique, as gas tungsten arc welding, plasma arc welding, manual sub-arc-welding, metal inert-gas arc welding, welding, shielding gas electric-arc welding etc.The welding of full austenite low-carbon ferronickel Chrome metal powder seamless tube must be carried out in annealed state, and cleans out spot, dust and various mark.Adopt input low in calories, interlayer temperature is no more than 150 DEG C.Without the need to welding front or postweld heat treatment
A kind of full austenite low-carbon ferronickel Chrome metal powder seamless tube of the present invention, improves full austenite low-carbon ferronickel Chrome metal powder seamless tube surface corrosion resistance energy, and the superior standard of performance of seamless tube, reduce the cost of manufacture of seamless tube, and production process is simple.
The foregoing is only the specific embodiment of the present invention; but protection scope of the present invention is not limited thereto; any those of ordinary skill in the art are in the technical scope disclosed by the present invention; the change can expected without creative work or replacement, all should be encompassed within protection scope of the present invention.Therefore, the protection domain that protection scope of the present invention should limit with claims is as the criterion.
Claims (6)
1. a full austenite low-carbon ferronickel Chrome metal powder seamless tube, it is characterized in that: described full austenite low-carbon ferronickel Chrome metal powder seamless tube comprises by weight percentage: iron is 28%-41%, nickel is 30%-34%, chromium is 18%-22%, aluminium is 4.3%-6.8%, titanium is 5.2%-6.9%, carbon is 0.05%-0.12%, vanadium is 0.11%-0.32%, silicon is 0.47%-0.53%, and zinc is 0.8%-1.2%, and phosphorus is 0.03%-0.06%, and sulphur is 0.04%-0.07%, the manufacturing step of described full austenite low-carbon ferronickel Chrome metal powder seamless tube comprises:
(1) first blank is tested and hot-work is carried out to blank,
(2) blank after hot-work is carried out anneal, carries out first time pickling after the annealing process,
(3) blank after pickling is carried out reconditioning, lubrication, cold drawing and rolling and process of deoiling,
(4) judge whether to meet finished product, then carry out finished product solution heat treatment, aligning, Ding Qie and pickling in this way,
(5) if not being, carrying out middle product solution heat treatment, aligning, surely cutting, pickling repeating step (3),
(6) end product is tested, and sprays word, packs, weighs and outbound.
2. full austenite low-carbon ferronickel Chrome metal powder seamless tube according to claim 1, is characterized in that: in described hot procedure, hot processing temperature is 900 DEG C-1200 DEG C, and the soaking time of described blank is that the thickness of every 100mm is incubated 60 minutes.
3. full austenite low-carbon ferronickel Chrome metal powder seamless tube according to claim 1, is characterized in that: the type of cooling of described anneal is shrend or cools fast between 540 DEG C-760 DEG C.
4. full austenite low-carbon ferronickel Chrome metal powder seamless tube according to claim 1, is characterized in that: it is 920 DEG C-980 DEG C that described finished product fixes heat treated temperature.
5. full austenite low-carbon ferronickel Chrome metal powder seamless tube according to claim 1, is characterized in that: the temperature of described middle product solution heat treatment is 960 DEG C-1010 DEG C.
6. full austenite low-carbon ferronickel Chrome metal powder seamless tube according to claim 1, is characterized in that: the blank that in described finished product solution heat treatment process, thickness is less than 1.5mm adopts the mode of quick air cooling to cool.
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| CN201310194361.XA CN103361536B (en) | 2013-05-23 | 2013-05-23 | Fully-austenitic low-carbon nickel-iron-chromium alloy seamless pipe |
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| CN201310194361.XA CN103361536B (en) | 2013-05-23 | 2013-05-23 | Fully-austenitic low-carbon nickel-iron-chromium alloy seamless pipe |
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| CN104174689A (en) * | 2014-07-21 | 2014-12-03 | 苏州贝思特金属制品有限公司 | Method for manufacturing 13CrMo44 alloy seamless steel pipe |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2149210C1 (en) * | 1998-05-08 | 2000-05-20 | Байдуганов Александр Меркурьевич | Refractory alloy |
| RU2194785C2 (en) * | 2000-06-15 | 2002-12-20 | Байдуганов Александр Меркурьевич | Heat-resistant alloy |
| CN101457316A (en) * | 2007-12-12 | 2009-06-17 | 海恩斯国际公司 | Weldable oxidation resistant nickel-iron-chromium-aluminum alloy |
| CN102620062A (en) * | 2012-03-21 | 2012-08-01 | 苏州贝思特金属制品有限公司 | Method for manufacturing low-carbon resisto seamless stainless steel tubes |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2149210C1 (en) * | 1998-05-08 | 2000-05-20 | Байдуганов Александр Меркурьевич | Refractory alloy |
| RU2194785C2 (en) * | 2000-06-15 | 2002-12-20 | Байдуганов Александр Меркурьевич | Heat-resistant alloy |
| CN101457316A (en) * | 2007-12-12 | 2009-06-17 | 海恩斯国际公司 | Weldable oxidation resistant nickel-iron-chromium-aluminum alloy |
| CN102620062A (en) * | 2012-03-21 | 2012-08-01 | 苏州贝思特金属制品有限公司 | Method for manufacturing low-carbon resisto seamless stainless steel tubes |
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Inventor after: Liu Chao Inventor before: Wang Qingming |
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Address after: 215500 Changshou City Xinzhuang (Yang Yuan) Industrial Park, Changshou City, Jiangsu Patentee after: Suzhou fitok metal products Co., Ltd. Address before: 215500 Xinzhuang (Yang Yuan) Industrial Park in Suzhou, Jiangsu Patentee before: Suzhou Best Metal Products Co., Ltd. |