CN100491017C - Method for producing ultrathin and ultralong centrifugal metallurgical composite double-metal pipe - Google Patents
Method for producing ultrathin and ultralong centrifugal metallurgical composite double-metal pipe Download PDFInfo
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- CN100491017C CN100491017C CNB2007100181401A CN200710018140A CN100491017C CN 100491017 C CN100491017 C CN 100491017C CN B2007100181401 A CNB2007100181401 A CN B2007100181401A CN 200710018140 A CN200710018140 A CN 200710018140A CN 100491017 C CN100491017 C CN 100491017C
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Abstract
The invention is concerned with the manufacturing method of the ultra-thin ultra-long centrifuge recombination double-metal tube, it is: uses water-cooling metal centrifugal casting machine to improves the structure of the tube module, uses sector bag and long sluice to isometric mould, the two layers of metal integer metallurgy combination by controlling the mould speed and mould temperature, which achieves the need of ultra-thin ultra-long, and the thickness of the wall is lower to 3 millimeter, the length is 6 meter. The invention can achieve the multi-variety and multi-standard of DN100-DN500.
Description
Technical field
The present invention relates to a kind of manufacture method that is used to produce bimetal compound pipeline, particularly relate to the manufacture method of ultrathin and ultralong centrifugal metallurgical composite double-metal pipe.
Background technology
Composite bimetal pipe is the metal material that utilizes two kinds of different performances, adopt certain complex technique to make it form the organic whole of inside and outside two-layer strong bonded, because two kinds of metal materials still keep primary characteristic separately, can give full play to the advantage separately of two kinds of metals, therefore its physics, chemistry, mechanical property are much more superior than single metal, have excellent comprehensive performances and serviceability, approved widely in industries such as metallurgy, mine, electric power, oil, building, coals.
Centrifugal casting is a kind of Special Processes of Metal Castings technology that is widely adopted.It is that liquid metal is poured in the casting mold of rotation, makes it under action of centrifugal force, finishes a kind of casting method of filling and solidification forming.Along with development of technology, centrifugal casting has realized the production requirement of mechanization, automation at present, is usually used in producing cast tube, cylinder sleeve etc., mainly carries out at single material.For the compound centrifugal casting of bimetallic, then relate to technical barrier how in two kinds of metal composite processes, to realize metallurgical binding.According to report, it is compound that the employing centrifugation technique carries out bimetallic at present, be used for short and thick products such as production casing, roll more, disclosed patent " method of centrifugal casting bi-metal double-pipe (CN85102836) " and " bimetallic centrifugal casting process for cylindrical casting (CN1190041A) ", also all be to adopt the method for hot-die centrifugal casting to make, to carry out preheating to the pipe die casting mold, and to brush special fireproof coating, vibration deformation very easily takes place owing to mismachining tolerance in the pipe die casting mold in the high speed rotary course, thereby causes waste product; Will rely on operating personnel's working experience in the practical operation, installing/dismounting all needs manually-operated, can't realize automation, serialization production, inefficiency; The length of product also is no more than 2 meters simultaneously, and compound caliber is limited in scope, and wall thickness is also thicker, can't realize that overlength is ultra-thin compound, causes unnecessary trouble for on-the-spot construction and installation, and the ratio of performance to price is bad.Traditional centrifuge also is difficult to satisfy the production requirement of metallurgical binding composite bimetal pipe owing to be subjected to the influence of manufacturing process, equipment performance, human factor etc.
Summary of the invention
The object of the present invention is to provide a kind of manufacture method of ultrathin and ultralong centrifugal metallurgical composite double-metal pipe.This method adopts the water-cooled metal mould centrifugal casting machine, improved the structure of pipe die casting mold, adopt fan-shaped bag and long chute to carry out the equivalent cast,, make double layer of metal reach whole metallurgical binding by control poring rate and pouring temperature, realize the composite demand of ultra-thin overlength, the minimum 3mm that reaches of wall thickness, length can reach 6 meters, and can realize the multiple tube production of the specification how wide in variety of DN100～DN500, the automation of Sheng Chaning simultaneously, integrated level are very high, and production efficiency reaches maximization.
Technical scheme of the present invention is achieved in that its manufacture method carries out according to the following steps:
1., according to the specification of the multiple tube of producing, pour the molten metal of outer tube (1) aequum into first fan-shaped bag (4), the molten metal of inner tube (2) aequum is poured in the second fan-shaped bag (5);
2., according to the specification of multiple tube, set poring rate and pipe die rotating speed, poring rate 15～17m/min, pipe die rotating speed: 300～1100r/min, the water-cooled metal mould centrifugal casting machine is with the above-mentioned parameter operation that configures, drive pipe die (3) the arrival pouring position that moves ahead, the first long chute (6) stretches in the pipe die (3);
3., the first fan-shaped bag (4) is by the poring rate upset of above-mentioned setting, molten metal pours in the pipe die (3) along the first long chute (6), the water-cooled metal mould centrifugal casting machine drives pipe die (3) back row, and outer sphere molten metal (1) constantly pours in the pipe die (3), and under centrifugal action solidification forming;
4., row puts in place behind the water-cooled metal mould centrifugal casting machine, outer layer metal (1) cast finishes, and the first fan-shaped bag (4) is stepped down, and the second fan-shaped bag (5) is traversing in 5～20s, arrives pouring position;
5., the water-cooled metal mould centrifugal casting machine drives pipe die (3) once more and is forwarded to pouring position, the second long chute (7) stretches in the pipe die (3);
6., the second fan-shaped bag (5) is by the poring rate upset of setting, inner layer metal liquid (2) is poured in the pipe die (3) along the second long chute (7), the water-cooled metal mould centrifugal casting machine drives pipe die (3) back row once more, inner layer metal liquid (2) constantly pours in the pipe die (3), solidification forming under centrifugal action;
7., row puts in place behind the water-cooled metal mould centrifugal casting machine, tube drawing pincers (8) move ahead, and stretch in the multiple tube, and the tensioner multiple tube retreats and extract multiple tube in pipe die (3), promptly makes composite bimetal pipe;
8., the second fan-shaped bag (5) withdraws from, the first fan-shaped bag (4) is shifted to pouring position, can carry out the production of next root multiple tube.
The ectonexine metal material of described multiple tube can be selected ordinary carbon steel, steel alloy, rich chromium cast iron, ni-hard cast iron respectively for use.
The present invention compared with prior art has the following advantages:
1, adopt the water-cooled metal mould centrifugal casting apparatus, mechanical electronic hydraulic is increasingly automated, has realized cast, compound, the serialization of withdrawing pattern, large-scale production, and the production cycle of a composite bimetal pipe shortens to 1～3min, has greatly improved production efficiency;
2, adopt fan-shaped bag quantitatively to pour into a mould, stable molten metal is provided, guarantee the uniformity of multiple tube wall thickness, also reduced the waste of molten metal, improved the utilization rate of molten metal;
3, the employing long chute close with multiple tube length carries out the movable type cast, make molten metal under action of centrifugal force, form with helix is evenly distributed on the pipe die inwall, the helix plume fused together again mutually in moment, the ultra-thin overlength that realizes multiple tube is compound, once-combined length can reach 6 meters, and casting thickness can reach 3～8mm;
4, owing to the effect of water-cooled, the molten metal setting rate is accelerated, consecutive solidification, formed columanar structure, grain refinement is simultaneously by the control pouring temperature and the duration of pouring, make inside and outside double layer of metal realize the excellent metallurgical combination, the multiple tube combination property is better;
5, the pipe die of replaceable different size is realized a tractor serves several purposes, can produce the multiple tube of the plurality of specifications of DN100～DN500mm;
6, owing to having realized mechanical-electrical-hydraulic integration, can be interconnected with computer, use advanced language programming, carry out in-circuit emulation simulation, online detection, can form the intelligent control system that man-machine interface is mutual, have study and adaptation function.
Description of drawings
Below in conjunction with accompanying drawing the present invention is described in further detail:
Fig. 1 composite pipe structure schematic diagram;
Fig. 2 multiple tube cast schematic diagram;
Fig. 3 multiple tube production process schematic diagram.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail, but the present invention is not limited to following example.
Embodiment one: make φ 133 bimetal tubes, outer layer thickness 4mm selects 35 steel for use; Interior layer thickness 3mm selects rich chromium cast iron for use; Multiple tube length 6m.Its structure as shown in Figure 1, its casting process such as Fig. 2, shown in Figure 3.
The inventive method is carried out according to following steps:
1., with two the cover electric furnaces, smelt 35 steel and rich chromium cast iron respectively; The pipe die of centrifuge is changed into φ 133 pipe dies (3), assemble and try out good;
2., will smelt good 35 steel (1) and pour fan-shaped bag (4) into by poured weights 85kg, pour fan-shaped bag (5) with smelting good rich chromium cast iron (2) into by poured weights 60kg, and fan-shaped bag (4) placed pouring position;
3., set poring rate 17m/min, pipe die rotating speed 1000r/min, the start operation, centrifugal main frame drives pipe die (3) with the parameter that configures and moves ahead and arrive pouring position, this duration chute (6) stretches in the pipe die;
4., fan-shaped bag (4) is by the poring rate upset of setting, 35 steel molten metals (1) inject in the pipe dies (3) along long chutes (6), go behind the centrifugal main frame, 35 steel molten metals (1) constantly pour in the pipe die (3), and under centrifugal action solidification forming;
5., row is to the tube drawing position behind the centrifugal main frame, outer 35 steel metals (1) cast finishes, and fan-shaped bag (4) is stepped down, and fan-shaped bag (5) is traversing to pouring position, transposition time 5s;
6., centrifugal main frame drives pipe die (3) once more and is forwarded to pouring position, long chute (7) stretches in the pipe die;
7., fan-shaped bag (5) speed upset in accordance with regulations, rich chromium cast iron molten metal (2) injects in the pipe die (3) along long chute (7), centrifugal main frame back is once more gone, rich chromium cast iron molten metal (2) constantly pours in the pipe die, solidification forming under centrifugal action;
8., centrifugal main frame once more back row continue the rotation certain hour to the tube drawing position, tube drawing pincers (8) move ahead, stretch in the multiple tube, the tensioner multiple tube retreats and extract multiple tube in pipe die (3), and promptly making internal layer is that rich chromium cast iron, skin are φ 133 composite bimetal pipes of 35 steel;
Repeat the above-mentioned 8. step that 2. arrives, promptly can carry out the making of next root multiple tube, form serialization production.
Embodiment two: make φ 299 bimetal tubes, outer layer thickness 6mm selects 35 steel for use; Interior layer thickness 5mm selects rich chromium cast iron for use; Multiple tube length 6m.Its structure as shown in Figure 1, its casting process such as Fig. 2, shown in Figure 3.
The inventive method is carried out according to following steps:
1., with two the cover electric furnaces, smelt 35 steel and rich chromium cast iron respectively; The pipe die of centrifuge is changed into φ 299 pipe dies (3), assemble and try out good;
2., will smelt good 35 steel (1) and pour fan-shaped bag (4) into by poured weights 284kg, pour fan-shaped bag (5) with smelting good rich chromium cast iron (2) into by poured weights 232kg, and fan-shaped bag (4) placed pouring position;
3., set poring rate 16m/min, pipe die rotating speed 480r/min, the start operation, centrifugal main frame drives pipe die (3) with the parameter that configures and moves ahead and arrive pouring position, this duration chute (6) stretches in the pipe die;
4., as previously mentioned;
5., row is to the tube drawing position behind the centrifugal main frame, outer 35 steel metals (1) cast finishes, and fan-shaped bag (4) is stepped down, and fan-shaped bag (5) is traversing to pouring position, transposition time 10s;
6., as previously mentioned;
7., as previously mentioned;
8., centrifugal main frame once more back row continue the rotation certain hour to the tube drawing position, the tube drawing pincers
(8) move ahead, stretch in the multiple tube, the tensioner multiple tube retreats and extract multiple tube in pipe die (3), and promptly making internal layer is that rich chromium cast iron, skin are φ 299 composite bimetal pipes of 35 steel;
Repeat the above-mentioned 8. step that 2. arrives, promptly can carry out the making of next root multiple tube, form serialization production.
Embodiment three: make φ 500 bimetal tubes, outer layer thickness 8mm selects 35 steel for use; Interior layer thickness 6mm selects rich chromium cast iron for use; Multiple tube length 6m.Its structure as shown in Figure 1, its casting process such as Fig. 2, shown in Figure 3.
The inventive method is carried out according to following steps:
1., with two the cover electric furnaces, smelt 35 steel and rich chromium cast iron respectively; The pipe die of centrifuge is changed into φ 500 pipe dies (3), assemble and try out good;
2., will smelt good 35 steel (1) and pour fan-shaped bag (4) into by poured weights 636kg, pour fan-shaped bag (5) with smelting good rich chromium cast iron (2) into by poured weights 470kg, and fan-shaped bag (4) placed pouring position;
3., set poring rate 15m/min, pipe die rotating speed 340r/min, the start operation, centrifugal main frame drives pipe die (3) with the parameter that configures and moves ahead and arrive pouring position, this duration chute (6) stretches in the pipe die;
4., as previously mentioned;
5., row is to the tube drawing position behind the centrifugal main frame, outer 35 steel metals (1) cast finishes, and fan-shaped bag (4) is stepped down, and fan-shaped bag (5) is traversing to pouring position, transposition time 20s;
6., as previously mentioned;
7., as previously mentioned;
8., centrifugal main frame once more back row continue the rotation certain hour to the tube drawing position, tube drawing pincers (8) move ahead, stretch in the multiple tube, the tensioner multiple tube retreats and extract multiple tube in pipe die (3), and promptly making internal layer is that rich chromium cast iron, skin are φ 500 composite bimetal pipes of 35 steel;
Repeat the above-mentioned 8. step that 2. arrives, promptly can carry out the making of next root multiple tube, form serialization production.
Claims (2)
1, a kind of manufacture method of ultrathin and ultralong centrifugal metallurgical composite double-metal pipe, it is characterized in that: it comprises the steps:
1., according to the specification of the multiple tube of producing, pour the molten metal of outer tube (1) aequum into first fan-shaped bag (4), the molten metal of inner tube (2) aequum is poured in the second fan-shaped bag (5);
2., according to the specification of multiple tube, set poring rate and pipe die rotating speed, poring rate 15～17m/min, pipe die rotating speed: 300～1100r/min, the water-cooled metal mould centrifugal casting machine is with the above-mentioned parameter operation that configures, drive pipe die (3) the arrival pouring position that moves ahead, the first long chute (6) stretches in the pipe die (3);
3., the first fan-shaped bag (4) is by the poring rate upset of above-mentioned setting, molten metal pours in the pipe die (3) along the first long chute (6), the water-cooled metal mould centrifugal casting machine drives pipe die (3) back row, and outer sphere molten metal (1) constantly pours in the pipe die (3), and under centrifugal action solidification forming;
4., row puts in place behind the water-cooled metal mould centrifugal casting machine, outer layer metal (1) cast finishes, and the first fan-shaped bag (4) is stepped down, and the second fan-shaped bag (5) is traversing in 5～20s, arrives pouring position;
5., the water-cooled metal mould centrifugal casting machine drives pipe die (3) once more and is forwarded to pouring position, the second long chute (7) stretches in the pipe die (3);
6., the second fan-shaped bag (5) is by the poring rate upset of setting, inner layer metal liquid (2) is poured in the pipe die (3) along the second long chute (7), the water-cooled metal mould centrifugal casting machine drives pipe die (3) back row once more, inner layer metal liquid (2) constantly pours in the pipe die (3), solidification forming under centrifugal action;
7., row puts in place behind the water-cooled metal mould centrifugal casting machine, tube drawing pincers (8) move ahead, and stretch in the multiple tube, and the tensioner multiple tube retreats and extract multiple tube in pipe die (3), promptly makes composite bimetal pipe;
8., the second fan-shaped bag (5) withdraws from, the first fan-shaped bag (4) is shifted to pouring position, can carry out the production of next root multiple tube.
2, the manufacture method of ultrathin and ultralong centrifugal metallurgical composite double-metal pipe according to claim 1 is characterized in that: the ectonexine metal material of described multiple tube can be selected ordinary carbon steel, steel alloy, rich chromium cast iron, ni-hard cast iron respectively for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100181401A CN100491017C (en) | 2007-06-27 | 2007-06-27 | Method for producing ultrathin and ultralong centrifugal metallurgical composite double-metal pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100181401A CN100491017C (en) | 2007-06-27 | 2007-06-27 | Method for producing ultrathin and ultralong centrifugal metallurgical composite double-metal pipe |
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| Publication Number | Publication Date |
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| CN101073822A CN101073822A (en) | 2007-11-21 |
| CN100491017C true CN100491017C (en) | 2009-05-27 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102343430B (en) * | 2011-09-21 | 2014-05-21 | 三一汽车制造有限公司 | Bimetallic composite conveying pipe and production process thereof |
| CN102848519A (en) * | 2012-09-19 | 2013-01-02 | 临汾鹏泰伟业有限公司 | Method for casting bi-color composite tubes |
| CN105156769A (en) * | 2015-07-14 | 2015-12-16 | 山东远大锅炉配件制造有限公司 | Thermometal abrasion-resistant composite pipe |
| CN106001482A (en) * | 2016-06-28 | 2016-10-12 | 邯郸新兴特种管材有限公司 | Centrifugal casting bimetal abrasion resistant pipe and preparation method thereof |
| CN106583666B (en) * | 2017-02-28 | 2018-10-16 | 遵义恒佳铝业有限公司 | A kind of aluminum pipe process units |
| CN109434059B (en) * | 2019-01-05 | 2021-06-18 | 叶素菊 | Multifunctional centrifugal casting machine |
| US11498121B2 (en) | 2019-03-14 | 2022-11-15 | General Electric Company | Multiple materials and microstructures in cast alloys |
| CN111069557B (en) * | 2019-12-24 | 2022-06-17 | 中钢集团邢台机械轧辊有限公司 | Centrifugal roller outer layer pouring system and manufacturing method thereof |
| CN111168037B (en) * | 2020-01-16 | 2021-03-16 | 青岛力晨新材料科技有限公司 | Stainless steel/carbon steel composite pipe and manufacturing process thereof |
| CN111230072B (en) * | 2020-01-16 | 2021-11-02 | 青岛力晨新材料科技有限公司 | Stainless steel/carbon steel composite pipe pouring system and pouring process thereof |
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