CN103470869A - Steel-shell combined-flow steel pipe and production method thereof - Google Patents
Steel-shell combined-flow steel pipe and production method thereof Download PDFInfo
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- CN103470869A CN103470869A CN2013103972975A CN201310397297A CN103470869A CN 103470869 A CN103470869 A CN 103470869A CN 2013103972975 A CN2013103972975 A CN 2013103972975A CN 201310397297 A CN201310397297 A CN 201310397297A CN 103470869 A CN103470869 A CN 103470869A
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Abstract
The invention discloses a steel-shell combined-flow steel pipe and a production method thereof. The steel-shell combined-flow steel pipe comprises a thin-wall seamless steel pipe and a flow steel pipe in the thin-wall seamless steel pipe, a 20-50mm gap is formed between the thin-wall seamless steel pipe and the flow steel pipe and filled with a quartz sand construction material binder course, and the thin-wall seamless steel pipe and the flow steel pipe are bonded closely through the quartz sand construction material binder course. The steel-shell combined-flow steel pipe and the production method have the advantages that runner bricks are disposed into the large-diameter seamless steel pipe to reserve the 20-50mm gap between the seamless steel pipe and the runner bricks, the gap is compacted and tightly constructed by quartz sand construction materials to allow the steel pipe and the runner bricks to be closely bonded, and stress on the inner wall is approximately equal to that on the outer wall during use of the runner bricks, so that probability of breakage of the runner bricks is prevented and lowered, service life of the processed steel-shell combined-flow steel pipe is prolonged by 2-5 times, service life is prolonged, and the steel-shell combined-flow steel pipe is simple and feasible during production and processing, low in production cost, high in efficiency and convenient to connect.
Description
Technical field
The present invention relates to box hat combined-flow steel pipe and preparation method thereof.
Background technique
Runner brick is the long-term refractory material used in iron and steel and casting industry, the production of runner brick is by forming with the refractory material sintering, and the existing steel brick that flows adopts the refractory material sintering to form, because of refractory material fragility large, in being subject to thermal process, the thermal stress of inside and outside wall differs greatly, and runner brick is easy-rupturing when being heated, and causes runner brick to use and just scraps once or several times, cause the runner brick used in iron and steel and casting industry often to change, increased workman's labor intensity and cost of production.
Summary of the invention
The object of the present invention is to provide box hat combined-flow steel pipe and preparation method thereof, overcome the deficiencies in the prior art, can solve the fragility problem of runner brick, extend the working life of runner brick.
The objective of the invention is to be achieved through the following technical solutions: box hat combined-flow steel pipe, it comprises the stream steel pipe in thin-wall seamless steel pipe and thin-wall seamless steel pipe; be provided with the gap of 20-50mm between thin-wall seamless steel pipe and stream steel pipe; be filled with silica sand in gap and build the material binder course, and thin-wall seamless steel pipe and stream steel pipe are built the material binder course by silica sand and combined closely.
The thickness of described thin-wall seamless steel pipe is 3-5mm.
The making method of box hat combined-flow steel pipe, it comprises following steps:
(1), the proportioning of silica sand: quartz sand particle carries out proportioning according to the material of following mass percent: be less than 10 order 10%-15%, 10-20 order 25%-30%, 20-40 order 25%-30%, be greater than 40 order 25%-30%;
(2), spice: the quartz sand particle of above-mentioned mass percent is mixed and add the Bond of quartz sand particle total amount 1.1%-1.5% then even with the spades upset;
(3), humidify: add the water glass of catalytic amount, then upset all evenly rubs with hand rubbing, the addition of water glass all becomes damp hand with silica sand and pinches not agglomerating being as the criterion, and obtains silica sand and builds material;
(4), the processing of thin-wall seamless steel pipe: at the two ends of thin-wall seamless steel pipe welded flange, the length of thin-wall seamless steel pipe is as the criterion with the length of stream steel pipe and the operation of convenient compacting silica sand, is generally 300-1200mm;
(5), processing: will flow steel pipe and put in thin-wall seamless steel pipe, keep the stream steel pipe consistent with gap 20-50mm and surrounding gap between thin-wall seamless steel pipe, the silica sand of handling well is built to material and evenly pour and pull out as far as possible straight tamper into along the gap of ring-type in fact, the silica sand that to pour length into be 80-120mm is at every turn built material, again pour the silica sand compacting after compacting into, until that knotting is all tamped in the gap of stream steel pipe is complete, obtain box hat combined-flow steel pipe, during use by getting final product with bolted flange.
Described Bond is boric anhydride B2O3 or boric acid H3BO3.
Beneficial effect of the present invention is: by runner brick being put in the seamless steel pipe that diameter is large, keep having between seamless steel pipe and runner brick the gap of 20-50mm, building the material compacting with silica sand between gap builds tight, allowing steel pipe and runner brick reach combines closely, make runner brick inwall in use stressed with outer wall stressed approach consistent, thereby reach the possibility that prevents and reduce the runner brick fracture, extend 2-5 the working life of the box hat combined-flow steel pipe after processing doubly, improved working life, and it is simple to have a process of manufacture, the cost of production poor efficiency is high, characteristics easy to connect, box hat combined-flow steel pipe can be processed into length arbitrarily simultaneously.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Wherein, the 1-thin-wall seamless steel pipe, 2-flows steel pipe, and 3-silica sand is built the material binder course.
Embodiment
Further describe technological scheme of the present invention below in conjunction with drawings and Examples, but that claimed scope is not limited to is described.
As Fig. 1, box hat combined-flow steel pipe, it comprises the stream steel pipe 2 in thin-wall seamless steel pipe 1 and thin-wall seamless steel pipe 1; be provided with the gap of 20-50mm between thin-wall seamless steel pipe 1 and stream steel pipe 2; be filled with silica sand in gap and build material binder course 3, and thin-wall seamless steel pipe 1 and stream steel pipe 2 are built material binder course 3 by silica sand and combined closely.
The thickness of described thin-wall seamless steel pipe 1 is 3-5mm.
Embodiment 1
The making method of box hat combined-flow steel pipe, it comprises following steps:
(1), the proportioning of silica sand: quartz sand particle carries out proportioning according to the material of following mass percent: 8 order 10%, 20 order 30%, 40 order 30%, 60 orders 30%;
(2), spice: the quartz sand particle of above-mentioned mass percent is mixed and add the Bond of quartz sand particle total amount 1.1% then even with the spades upset;
(3), humidify: add the water glass of quartz sand particle total amount 0.05%, then upset all evenly rubs with hand rubbing, the addition of water glass all becomes damp hand with silica sand and pinches not agglomerating being as the criterion, and obtains silica sand and builds material;
(4), the processing of thin-wall seamless steel pipe: at the two ends of thin-wall seamless steel pipe welded flange;
(5), processing: will flow steel pipe and put in thin-wall seamless steel pipe, keep the stream steel pipe consistent with gap 50mm and surrounding gap between thin-wall seamless steel pipe, the silica sand of handling well is built to material and evenly pour and pull out as far as possible straight tamper into along the gap of ring-type in fact, the silica sand that to pour length into be 100mm is at every turn built material, again pour the silica sand compacting after compacting into, until that knotting is all tamped in the gap of stream steel pipe is complete, obtain box hat combined-flow steel pipe, during use by getting final product with bolted flange.
Described Bond is boric anhydride B2O3.
Embodiment 2
The making method of box hat combined-flow steel pipe, it comprises following steps:
(1), the proportioning of silica sand: quartz sand particle carries out proportioning according to the material of following mass percent: 5 order 15%, 10 order 25%, 20 order 30%, 50 orders 30%;
(2), spice: the quartz sand particle of above-mentioned mass percent is mixed and add the Bond of quartz sand particle total amount 1.5% then even with the spades upset;
(3), humidify: add the water glass of quartz sand particle total amount 0.1%, then upset all evenly rubs with hand rubbing, the addition of water glass all becomes damp hand with silica sand and pinches not agglomerating being as the criterion, and obtains silica sand and builds material;
(4), the processing of thin-wall seamless steel pipe: at the two ends of thin-wall seamless steel pipe welded flange;
(5), processing: will flow steel pipe and put in thin-wall seamless steel pipe, keep the stream steel pipe consistent with gap 20mm and surrounding gap between thin-wall seamless steel pipe, the silica sand of handling well is built to material and evenly pour and pull out as far as possible straight tamper into along the gap of ring-type in fact, the silica sand that to pour length into be 80mm is at every turn built material, again pour the silica sand compacting after compacting into, until that knotting is all tamped in the gap of stream steel pipe is complete, obtain box hat combined-flow steel pipe, during use by getting final product with bolted flange.
Described Bond is boric acid H3BO3.
Embodiment 3
The making method of box hat combined-flow steel pipe, it comprises following steps:
(1), the proportioning of silica sand: quartz sand particle carries out proportioning according to the material of following mass percent: 6 order 15%, 15 order 30%, 30 order 25%, 70 orders 30%;
(2), spice: the quartz sand particle of above-mentioned mass percent is mixed and add the Bond of quartz sand particle total amount 1.3% then even with the spades upset;
(3), humidify: add the water glass of quartz sand particle total amount 0.02%, then upset all evenly rubs with hand rubbing, the addition of water glass all becomes damp hand with silica sand and pinches not agglomerating being as the criterion, and obtains silica sand and builds material;
(4), the processing of thin-wall seamless steel pipe: at the two ends of thin-wall seamless steel pipe welded flange;
(5), processing: will flow steel pipe and put in thin-wall seamless steel pipe, keep the stream steel pipe consistent with gap 30mm and surrounding gap between thin-wall seamless steel pipe, the silica sand of handling well is built to material and evenly pour and pull out as far as possible straight tamper into along the gap of ring-type in fact, the silica sand that to pour length into be 120mm is at every turn built material, again pour the silica sand compacting after compacting into, until that knotting is all tamped in the gap of stream steel pipe is complete, obtain box hat combined-flow steel pipe, during use by getting final product with bolted flange.
Described Bond is boric anhydride B2O3.
Embodiment 4
The making method of box hat combined-flow steel pipe, it comprises following steps:
(1), the proportioning of silica sand: quartz sand particle carries out proportioning according to the material of following mass percent: 5 order 15%, 18 order 30%, 35 order 30%, 55 orders 25%;
(2), spice: the quartz sand particle of above-mentioned mass percent is mixed and add the Bond of quartz sand particle total amount 1.1%-1.5% then even with the spades upset;
(3), humidify: add the water glass of quartz sand particle total amount 0.015%, then upset all evenly rubs with hand rubbing, the addition of water glass all becomes damp hand with silica sand and pinches not agglomerating being as the criterion, and obtains silica sand and builds material;
(4), the processing of thin-wall seamless steel pipe: at the two ends of thin-wall seamless steel pipe welded flange;
(5), processing: will flow steel pipe and put in thin-wall seamless steel pipe, keep the stream steel pipe consistent with gap 25mm and surrounding gap between thin-wall seamless steel pipe, the silica sand of handling well is built to material and evenly pour and pull out as far as possible straight tamper into along the gap of ring-type in fact, the silica sand that to pour length into be 90mm is at every turn built material, again pour the silica sand compacting after compacting into, until that knotting is all tamped in the gap of stream steel pipe is complete, obtain box hat combined-flow steel pipe, during use by getting final product with bolted flange.
Described Bond is boric acid H3BO3.
Embodiment 5
The making method of box hat combined-flow steel pipe, it comprises following steps:
(1), the proportioning of silica sand: quartz sand particle carries out proportioning according to the material of following mass percent: 7 order 12%, 15 order 28%, 40 order 29%, 60 orders 29%;
(2), spice: the quartz sand particle of above-mentioned mass percent is mixed and add the Bond of quartz sand particle total amount 1.1%-1.5% then even with the spades upset;
(3), humidify: add the water glass of quartz sand particle total amount 0.02%, then upset all evenly rubs with hand rubbing, the addition of water glass all becomes damp hand with silica sand and pinches not agglomerating being as the criterion, and obtains silica sand and builds material;
(4), the processing of thin-wall seamless steel pipe: at the two ends of thin-wall seamless steel pipe welded flange;
(5), processing: will flow steel pipe and put in thin-wall seamless steel pipe, keep the stream steel pipe consistent with gap 30mm and surrounding gap between thin-wall seamless steel pipe, the silica sand of handling well is built to material and evenly pour and pull out as far as possible straight tamper into along the gap of ring-type in fact, the silica sand that to pour length into be 110mm is at every turn built material, again pour the silica sand compacting after compacting into, until that knotting is all tamped in the gap of stream steel pipe is complete, obtain box hat combined-flow steel pipe, during use by getting final product with bolted flange.
Described Bond is boric anhydride B2O3.
The present invention is by the reprocessing of the runner brick to moulding; in the additional one deck seamless steel pipe protection of the runner brick of moulding; the gap that 20--50mm is arranged between seamless steel pipe and runner brick; building real the building tightly of material with silica sand between gap forms; in use, the quartz sand layer expanded by heating convection current outer wall of steel pipe mineralization pressure between gap, offseted by the pressure of thermosetting with the stream steel pipe inner wall; thereby prevented the fracture of stream steel pipe, improved the working life of stream steel pipe.
Claims (4)
1. box hat combined-flow steel pipe, it is characterized in that: it comprises the stream steel pipe (2) in thin-wall seamless steel pipe (1) and thin-wall seamless steel pipe (1); be provided with the gap of 20-50mm between thin-wall seamless steel pipe (1) and stream steel pipe (2); be filled with silica sand in gap and build material binder course (3), thin-wall seamless steel pipe (1) and stream steel pipe (2) are built material binder course (3) by silica sand and combined closely.
2. box hat combined-flow steel pipe according to claim 1, it is characterized in that: the thickness of described thin-wall seamless steel pipe (1) is 3-5mm.
3. the making method of box hat combined-flow steel pipe, it is characterized in that: it comprises following steps:
(1), the proportioning of silica sand: quartz sand particle carries out proportioning according to the material of following mass percent: be less than 10 order 10%-15%, 10-20 order 25%-30%, 20-40 order 25%-30%, be greater than 40 order 25%-30%;
(2), spice: the quartz sand particle of above-mentioned mass percent is mixed and add the Bond of quartz sand particle total amount 1.1%-1.5% then even with the spades upset;
(3), humidify: add the water glass of catalytic amount, then upset all evenly rubs with hand rubbing, the addition of water glass all becomes damp hand with silica sand and pinches not agglomerating being as the criterion, and obtains silica sand and builds material;
(4), the processing of thin-wall seamless steel pipe: at the two ends of thin-wall seamless steel pipe welded flange;
(5), processing: will flow steel pipe and put in thin-wall seamless steel pipe, keep the stream steel pipe consistent with gap 20-50mm and surrounding gap between thin-wall seamless steel pipe, the silica sand of handling well is built to material and evenly pour and pull out as far as possible straight tamper into along the gap of ring-type in fact, the silica sand that to pour length into be 80-120mm is at every turn built material, again pour the silica sand compacting after compacting into, until that knotting is all tamped in the gap of stream steel pipe is complete, obtain box hat combined-flow steel pipe, during use by getting final product with bolted flange.
4. the making method of shell combined-flow steel pipe according to claim 3, it is characterized in that: described Bond is boric anhydride B2O3 or boric acid H3BO3.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310397297.5A CN103470869B (en) | 2013-09-04 | 2013-09-04 | Steel-shell combined-flow steel pipe and production method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310397297.5A CN103470869B (en) | 2013-09-04 | 2013-09-04 | Steel-shell combined-flow steel pipe and production method thereof |
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| CN103470869A true CN103470869A (en) | 2013-12-25 |
| CN103470869B CN103470869B (en) | 2015-06-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111604646A (en) * | 2020-05-26 | 2020-09-01 | 上海奉贤钢管厂有限公司 | Machining process of multi-element composite steel pipe |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4657226A (en) * | 1984-09-18 | 1987-04-14 | Osterreichisch-Amerikanische Magnesit Aktiengessellschaft | Apparatus for introducing gas to molten metal within a vessel |
| CN1116142A (en) * | 1995-05-27 | 1996-02-07 | 西安建筑科技大学 | Making technology for bimetal pipe |
| CN101147970A (en) * | 2007-11-01 | 2008-03-26 | 王福洋 | Vacuum pouring honeycomb duct |
| CN201313175Y (en) * | 2008-12-16 | 2009-09-23 | 中国第一重型机械集团公司 | Tundish honeycomb duct for vacuum ingot casting |
| CN201505719U (en) * | 2009-09-01 | 2010-06-16 | 赵海军 | Runner brick |
-
2013
- 2013-09-04 CN CN201310397297.5A patent/CN103470869B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4657226A (en) * | 1984-09-18 | 1987-04-14 | Osterreichisch-Amerikanische Magnesit Aktiengessellschaft | Apparatus for introducing gas to molten metal within a vessel |
| CN1116142A (en) * | 1995-05-27 | 1996-02-07 | 西安建筑科技大学 | Making technology for bimetal pipe |
| CN101147970A (en) * | 2007-11-01 | 2008-03-26 | 王福洋 | Vacuum pouring honeycomb duct |
| CN201313175Y (en) * | 2008-12-16 | 2009-09-23 | 中国第一重型机械集团公司 | Tundish honeycomb duct for vacuum ingot casting |
| CN201505719U (en) * | 2009-09-01 | 2010-06-16 | 赵海军 | Runner brick |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111604646A (en) * | 2020-05-26 | 2020-09-01 | 上海奉贤钢管厂有限公司 | Machining process of multi-element composite steel pipe |
| CN111604646B (en) * | 2020-05-26 | 2021-12-14 | 上海奉贤钢管厂有限公司 | Machining process of multi-element composite steel pipe |
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| CN103470869B (en) | 2015-06-17 |
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