CN1262407A - Weldable compound bimetal pipe - Google Patents
Weldable compound bimetal pipe Download PDFInfo
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- CN1262407A CN1262407A CN 00101489 CN00101489A CN1262407A CN 1262407 A CN1262407 A CN 1262407A CN 00101489 CN00101489 CN 00101489 CN 00101489 A CN00101489 A CN 00101489A CN 1262407 A CN1262407 A CN 1262407A
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- pipe
- weldable
- rare earth
- internal lining
- bimetal pipe
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Abstract
A weldable bimetal compounded pipe is a dual-wall rigid pipe, which is composed of interna lining pipe and external protective sleeve pipe. It is made up through coating metal adhesive onto external surface of lining pipe and internal surface of protective sleeve pipe, pressing and welding. Its advantages are high hardness and antiwear and anticorrosion performance, simple manufacture process, and low cost.
Description
The present invention relates to a kind of rigidity double wall pipe, specifically relate to a kind of weldable compound bimetal pipe.
Ascending along with generator set, nonferrous smelting industry breeze is carried, carry by belt conveyer and to develop into pipeline malleation steam flow and carry, wear-resisting, the decay resistance of pipeline also required thereupon more and more higher, though its wear-resisting property of cast stone cement bend pipe is good, but it is very crisp, and volume is big, and is in use often chipping because of temperature variation, vibrations, collision etc., blocking pipe when serious, influence ordinary production, and also have only 2-3 working life; The recently new ceramic composite steel pipe of developing, though wear resistance is good, because its complex manufacturing, the product price height, and also pipeline is when welding, and the weld joint wear-resisting property can not get guaranteeing, uses to promote to be subjected to certain restriction; Alloy cast iron pipeline (rich chromium cast iron) hardness height, wear-resisting property is good, and corrosion resistance is strong, but its poor toughness is easy to crack, and incompatibility high-altitude frame pipe and field welding are installed, and are extensive use of thereby influenced.
Therefore, the object of the present invention is to provide a kind of weldable compound bimetal pipe.
Technological scheme of the present invention is achieved in that a kind of weldable compound bimetal pipe, it is characterized in that: its tube wall is made of internal lining pipe and overcoat protective tube, scribbles metal adhesive at internal lining pipe outer surface and overcoat protective tube internal surface and compresses welding again.
The present invention also has following feature: the material of internal lining pipe is high chromium rare earth alloy cast iron, and the material of overcoat protective tube is a carbon steel; The composition of high chromium rare earth alloy cast iron and weight percentage: C 2.6-3.0, Si 1.4-1.6, Mn1.1-1.5, Cr 20-28, Mo 0.5-0.8, Ni 0.5-1.0, RE 0.002-0.006, iron surplus; Metal adhesive is a resinoid bond.
Carbon: carbon is to influence the material property principal element, and Kohlenstoffgehalt increases, and hardness intensity increases, and plasticity, toughness reduce, and good casting property determines that weight percentage ranges is in 2.6-3.0.
Silicon: silicon is that strong graphite element＞1% can occur with the form of graphite, and Sl content increases, and increases fragility, and toughness reduces, and determines that weight percentage ranges is at 1.4-1.6.
Chromium: chromium forms carbide and increases hardness, and crystal grain thinning determines that weight percentage ranges is at 20-28.
Molybdenum: molybdenum can crystal grain thinning, increases toughness, determine weight percent with scope at 0.5-0.8.
Nickel: nickel can improve toughness, determines that weight percentage ranges is at 0.5-1.0.
Rare earth: rare earth has crystal grain thinning, improves toughness, degasification, purifying molten iron, improves the effects such as distribution of carbide, determines that weight percentage ranges is at 0.002-0.006.
Pipe lining of the present invention (wearing course) adopts alloy cast iron, it has good casting property, production technology is easy, material hardness is high, wear resistance is good, anti-corrosion capacity is strong, can be according to different working conditions, design different alloy cast iron compositions, to adapt to it to wear resistance and corrosion proof requirement, pipeline outer-layer adopts the 20# carbon steel according to different calibers and angle form, adopts respectively to be cast as pattern A
3The steel plate roll-forming, alloy cast iron is the comparatively ideal material of antiwear property in the metallic material, after serving as pipe lining, because the effect of outer carbon steel: solved single cast iron tube poor toughness, easy-rupturing, an incompatibility high-altitude frame pipe and an on-the-spot unweldable difficult problem have been given full play to the high characteristics of alloy cast iron pipe wear resistance.Good, the corrosion-resistant strong advantage of hardness height, wear resistance and the toughness height of carbon steel, the combination of features that weldability is good that the bimetal wear resistant pipe combines alloy cast iron form, production technology is simple, cost of production is low, the price of " bimetal wear resistant pipe " is a ceramic composite steel pipe about 60% of the same type, the product super quality and competitive price will be brought into play big social benefit of tool and economic benefit.
Fig. 1 is the present invention's one structural representation;
Fig. 2 welds schematic representation for Fig. 1;
Fig. 3 is another structural representation of the present invention;
Fig. 4 welds schematic representation for Fig. 3.
The present invention is elaborated with embodiment below in conjunction with accompanying drawing:
All embodiment's percentage compositions of the present invention all refer to weight percentage.
Embodiment 1: with structure the present invention is explained:
In conjunction with Fig. 1, a kind of weldable compound bimetal pipe, its straight tube tube wall comprise high chromium rare earth alloy cast iron internal lining pipe 1 and carbon steel overcoat protective tube 2, and internal lining pipe 1 mouth of pipe 4 and protective tube 2 mouths of pipe 5 stagger a bit of mutually;
In conjunction with Fig. 3, a kind of weldable compound bimetal pipe, its bend pipe tube wall comprise high chromium rare earth alloy belong to cast iron internal lining pipe 1 ' and carbon steel overcoat protective tube 2 ', protective tube 2 ' mouth of pipe 5 ' parcel internal lining pipe 1 ' mouth of pipe 4 ';
The present invention is further described with production technology below:
C 2.6% Si 1.4% Mn 1.1% Cr, 20% Mo, 0.5% Ni 0.5%RE (the 1# rare earth of Baotou rare earth one factory) 0.002%
Fe surplus (percetage by weight), above-mentioned component adopt the 500kg intermediate frequency furnace to smelt, and adopt manual resin sand type selecting (bend pipe) or centrifugal casting moulding (straight tube), 1450 ℃-1500 ℃ of molten iron tapping temperatures, rare earth is put into bag, handles molten iron is rotten, and molten steel pouring temperature is 1380 ℃-1420 ℃, overflow fast earlier back in the casting process, heat-treat again through smelting the internal lining pipe that comes out, evenly be heated to 1020 ℃ ± 10 ℃, be incubated 2 hours, air-cooled to normal temperature, 200 ℃ then ± 10 ℃ tempering; Bend pipe carbon steel overcoat adopts the 500g intermediate frequency furnace to smelt, and adopts manual sodium silicate-bonded sand dry type, and the two halves casting mold is divided at the center, and the straight tube overcoat adopts A
3Steel plate rolls and forms, and after after heat treatment internal lining pipe outer surface and carbon steel overcoat inner surface are cleaned out, coats resinoid bond on its surface respectively, compresses back welding (as Fig. 2,4) again
Embodiment 2:
Embodiment 2 structure division and embodiment's 1 structural portion identical (slightly detailed);
The invention will be further described with production technology below:
C 3.0% Si 1.6% Mn 1.6% Cr, 28% Mo, 0.8% Ni, 1.0% RE (the 1# rare earth of Baotou rare earth one factory) 0.006%Fe surplus (percetage by weight), above-mentioned component adopts the 500kg intermediate frequency furnace to smelt, adopt manual resin sand type selecting (bend pipe) or centrifugal casting moulding (straight tube), 1450 ℃-1500 ℃ of molten iron tapping temperatures, rare earth is put into bag, handle molten iron is rotten, molten steel pouring temperature is 1380 ℃-1420 ℃, overflow fast earlier back in the casting process, heat-treat again through smelting the internal lining pipe that comes out, evenly be heated to 1020 ℃ ± 10 ℃, be incubated 2 hours, air-cooled to normal temperature, 200 ℃ then ± 10 ℃ tempering; Bend pipe carbon steel overcoat adopts the 500g intermediate frequency furnace to smelt, and adopts manual sodium silicate-bonded sand dry type, and the two halves casting mold is divided at the center, and the straight tube overcoat adopts A
3Steel plate rolls and forms, and after after heat treatment internal lining pipe outer surface and carbon steel overcoat inner surface are cleaned out, coats resinoid bond on its surface respectively, compresses back welding (as Fig. 2,4) again
Embodiment 3:
The invention will be further described with production technology below embodiment's structure division and embodiment's 1 the structure division identical (slightly detailed):
C 2.8% Si 1.5% Mn 1.4% Cr, 24% Mo, 0.65% Ni, 0.75% RE (the 1# rare earth of Baotou rare earth one factory) 0.004%Fe surplus (percetage by weight), above-mentioned component adopts the 500kg intermediate frequency furnace to smelt, adopt manual resin sand type selecting (bend pipe) or centrifugal casting moulding (straight tube), 1450 ℃-1500 ℃ of molten iron tapping temperatures, rare earth is put into bag, handle molten iron is rotten, molten steel pouring temperature is 1380 ℃-1420 ℃, overflow fast earlier back in the casting process, heat-treat again through smelting the internal lining pipe that comes out, evenly be heated to 1020 ℃ ± 10 ℃, be incubated 2 hours, air-cooled to normal temperature, 200 ℃ then ± 10 ℃ tempering; Bend pipe carbon steel overcoat adopts the 500g intermediate frequency furnace to smelt, and adopts manual sodium silicate-bonded sand dry type, and the two halves casting mold is divided at the center, and the straight tube overcoat adopts A
3Steel plate rolls and forms, and after after heat treatment internal lining pipe outer surface and carbon steel overcoat inner surface are cleaned out, coats resinoid bond on its surface respectively, compresses back welding (as Fig. 2,4) again
Claims (4)
1, a kind of weldable compound bimetal pipe is characterized in that: its tube wall is made of internal lining pipe and overcoat protective tube, scribbles metal adhesive at internal lining pipe outer surface and overcoat protective tube internal surface and compresses welding again.
2, a kind of weldable compound bimetal pipe according to claim 1,, it is characterized in that: the material of internal lining pipe is high chromium rare earth alloy cast iron, and the material of overcoat protective tube is a carbon steel.
3, a kind of weldable compound bimetal pipe according to claim 2, it is characterized in that: the composition of high chromium rare earth alloy cast iron and weight percentage: C 2.6-3.0, Si 1.4-1.6, Mn1.1-1.5, Cr 20-28, Mo 0.5-0.8, Ni 0.5-1.0, RE 0.002-0.006, iron surplus.
4, a kind of weldable compound bimetal pipe according to claim 1 is characterized in that: metal adhesive is a resinoid bond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00101489A CN1091497C (en) | 2000-02-01 | 2000-02-01 | Weldable compound bimetal pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00101489A CN1091497C (en) | 2000-02-01 | 2000-02-01 | Weldable compound bimetal pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1262407A true CN1262407A (en) | 2000-08-09 |
| CN1091497C CN1091497C (en) | 2002-09-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00101489A Expired - Fee Related CN1091497C (en) | 2000-02-01 | 2000-02-01 | Weldable compound bimetal pipe |
Country Status (1)
| Country | Link |
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| CN (1) | CN1091497C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101876383B (en) * | 2009-04-29 | 2012-12-12 | 北京安科管道工程科技有限公司 | Composite metal pipe and manufacturing method thereof as well as composite pipeline formed therefrom |
| CN103397246A (en) * | 2013-07-17 | 2013-11-20 | 宁国市杰宇铸造有限公司 | Antiwear shock-resistant white cast iron and production technique thereof |
| CN103448834A (en) * | 2013-08-16 | 2013-12-18 | 浙江吉利汽车研究院有限公司 | Connection structure and connection method of automobile parts |
| CN103667876A (en) * | 2013-11-21 | 2014-03-26 | 中国兵器工业第五二研究所烟台分所 | Multi-metal composite wear-resistant elbow pipe and preparation method thereof |
| CN106011687A (en) * | 2016-07-05 | 2016-10-12 | 常熟市电力耐磨合金铸造有限公司 | Impact-resisting and high-wear-resisting hard alloy steel and production technology thereof |
| CN107883073A (en) * | 2017-10-27 | 2018-04-06 | 合肥紫金钢管股份有限公司 | A kind of prestressed concrete pipe pile construction longitudinal submerged arc welded pipe |
| CN107906268A (en) * | 2017-10-27 | 2018-04-13 | 合肥紫金钢管股份有限公司 | High-intensity weather-proof high longitudinal submerged arc welded pipe is used in a kind of outdoor building construction |
| CN110117751A (en) * | 2019-06-18 | 2019-08-13 | 山东远大锅炉配件制造有限公司 | A kind of wear resistant corrosion resistant composite bimetal pipe material and preparation method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH048531A (en) * | 1990-04-27 | 1992-01-13 | Nkk Corp | Manufacture of lining tube |
| US5411060A (en) * | 1992-04-03 | 1995-05-02 | Chandler; Brian | Composite pipe |
| US5590691A (en) * | 1994-05-02 | 1997-01-07 | Itt Corporation | Extruded multiple plastic layer coating bonded to a metal tube |
-
2000
- 2000-02-01 CN CN00101489A patent/CN1091497C/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101876383B (en) * | 2009-04-29 | 2012-12-12 | 北京安科管道工程科技有限公司 | Composite metal pipe and manufacturing method thereof as well as composite pipeline formed therefrom |
| CN103397246A (en) * | 2013-07-17 | 2013-11-20 | 宁国市杰宇铸造有限公司 | Antiwear shock-resistant white cast iron and production technique thereof |
| CN103448834B (en) * | 2013-08-16 | 2018-08-03 | 浙江吉利汽车研究院有限公司 | Auto parts connection structure and attaching method thereof |
| CN103448834A (en) * | 2013-08-16 | 2013-12-18 | 浙江吉利汽车研究院有限公司 | Connection structure and connection method of automobile parts |
| CN103667876A (en) * | 2013-11-21 | 2014-03-26 | 中国兵器工业第五二研究所烟台分所 | Multi-metal composite wear-resistant elbow pipe and preparation method thereof |
| CN103667876B (en) * | 2013-11-21 | 2015-08-26 | 中国兵器工业第五二研究所烟台分所 | A kind of many metal composite wear-resistant bend pipe and preparation method thereof |
| CN106011687A (en) * | 2016-07-05 | 2016-10-12 | 常熟市电力耐磨合金铸造有限公司 | Impact-resisting and high-wear-resisting hard alloy steel and production technology thereof |
| CN107883073A (en) * | 2017-10-27 | 2018-04-06 | 合肥紫金钢管股份有限公司 | A kind of prestressed concrete pipe pile construction longitudinal submerged arc welded pipe |
| CN107906268A (en) * | 2017-10-27 | 2018-04-13 | 合肥紫金钢管股份有限公司 | High-intensity weather-proof high longitudinal submerged arc welded pipe is used in a kind of outdoor building construction |
| CN107906268B (en) * | 2017-10-27 | 2019-09-27 | 合肥紫金钢管股份有限公司 | A kind of outdoor building construction high-intensity weather-proof high longitudinal submerged arc welded pipe |
| CN107883073B (en) * | 2017-10-27 | 2019-09-27 | 合肥紫金钢管股份有限公司 | A kind of prestressed concrete pipe pile construction longitudinal submerged arc welded pipe |
| CN110117751A (en) * | 2019-06-18 | 2019-08-13 | 山东远大锅炉配件制造有限公司 | A kind of wear resistant corrosion resistant composite bimetal pipe material and preparation method thereof |
| CN110117751B (en) * | 2019-06-18 | 2020-10-27 | 山东远大锅炉配件制造有限公司 | Wear-resistant corrosion-resistant bimetal composite pipe material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1091497C (en) | 2002-09-25 |
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