CN101975187B - Intermittently welded impeller and welding method thereof - Google Patents
Intermittently welded impeller and welding method thereof Download PDFInfo
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- CN101975187B CN101975187B CN 201010542369 CN201010542369A CN101975187B CN 101975187 B CN101975187 B CN 101975187B CN 201010542369 CN201010542369 CN 201010542369 CN 201010542369 A CN201010542369 A CN 201010542369A CN 101975187 B CN101975187 B CN 101975187B
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Abstract
The invention relates to a welded impeller, in particular to an intermittently welded impeller and a welding method thereof. The conventional stainless steel welded impeller has small size and mechanical strength before and after welding so as to be easy to break. Thus, the intermittently welded impeller comprises a rear cover plate and a plurality of cambered blades, wherein the cambered blades are uniformly welded on the rear cover plate; a welding seam between the cambered blades and the rear cover plate is partitioned into a plurality of sectioned welding seams; and intermittent welding points are arranged between every two of the sectioned welding seams. The intermittently welded impeller also comprises a front cover plate; and the cambered blades are sandwiched between the front cover plate and the rear cover plate. The invention also relates to the welding method corresponding to the intermittently welded impeller. The intermittently welded impeller of the invention has the advantages of simple structure, high mechanical strength and small change in size before and after welding and is an ideal substitute product for the conventional stainless steel welded impeller; and the welding method of the impeller has simple steps and is convenient to operate.
Description
Technical field
The present invention relates to a kind of welding impeller, particularly a kind of interrupted welding impeller and welding method thereof.
Background technique
Water pump vane comprises casting impeller and not saturating steel welding impeller, and wherein casting impeller mechanism intensity is high, size error is little, but also has the shortcomings such as runner is coarse, consumptive material is many, weight is large;
Relative casting impeller, thoroughly steel welding impeller has that runner is smooth, lightweight, consumptive material is few, corrosion-resistant, the life-span long, is difficult for producing the outstanding advantages such as secondary pollution in the using process, at food, brewage, pharmacy, fine chemistry industry, spraying system of fire fighting and urban water supply and sewerage be widely used.
Existing not saturating steel welding impeller all adopts the continuous weld welding, and welding method comprises laser continuous welding and cumulative welding,
Laser continuous welding impeller wherein: seamless between front and rear cover plate and the blade after the welding, as deposited strength is high, but welding deformation is large.Impeller outer diameter appears in front and rear cover plate and blade, postwelding to be reduced than actual, and 260 millimeters of diameters will reduce 2 millimeters; Impeller outlet width blade and the weldering of front and rear cover plate place are melted and are reduced 0.3 to 0.5 millimeter, and between the blade, the front and rear cover plate distortion reduces 0.6 to 0.9 millimeter.
The distortion of cumulative welding impeller is little, but weld strength is limited, and number of welds reduces, there is the slit between front and rear cover plate and the blade after the welding, depositing has 50% existence to snap phenomenon (there is rosin joint in welding process) after one day, as deposited strength is good not, has hidden danger of quality.
Summary of the invention
The technical problem to be solved in the present invention is the defects that how to overcome prior art, and a kind of interrupted welding impeller and welding method thereof are provided.
For solving the problems of the technologies described above, this interrupted welding impeller comprises back shroud and many arc shaped blades, described arc shaped blade uniform welding is characterized in that on back shroud: described arc shaped blade is separated into the multistage section of one-tenth weld seam with weld seam between the back shroud, and each section becomes between the section weld seam to be provided with disconnected solder joint.So design, impeller only has the impeller of back shroud, can be called semiclosed impeller, can be used as the impeller of the slurry pump that contains solid impurity.Weld strength is large, is out of shape littlely, and machining accuracy is high.
As optimization, it also comprises front shroud, and described arc shaped blade is clipped between this front shroud and the back shroud, and front shroud and arc shaped blade are welded and fixed, and front shroud also is divided into the multistage section of one-tenth weld seam with weld seam between the arc shaped blade, and each section becomes between the section weld seam to be provided with disconnected solder joint.So design, impeller can be called totally-enclosed impeller, can be used as various clean waterpumps.
As optimization, described disconnected solder joint length≤5 millimeters, it is 20～30 millimeters that each section becomes section weld seam fusion length.So design, simple in structure, convenient welding.
The present invention intermittently welds the welding method of impeller, described following step:
One, the arc shaped blade of moulding is fixed on the back shroud;
Two, the trajectory that at first arc shaped blade is contacted with back shroud is divided into multistage and becomes the section track, and each cuts off solder joint between becoming between the section track, then welds arc shaped blade two ends and back shroud contact position, becomes the enterprising spot welding of section track successively again at each;
Three, each is become spot welding on section track, extend to into a section weld seam, each becomes section weld seam to overlap fully with the corresponding section of one-tenth track, namely finishes the intermittent welding termination process of arc shaped blade and back shroud.
This inventive method is used for processing semiclosed impeller.
The present invention intermittently welds the welding method of impeller, described following step:
One, the arc shaped blade of moulding is fixed on the back shroud;
Two, the trajectory that at first arc shaped blade is contacted with back shroud is divided into multistage and becomes the section track, and each cuts off solder joint between becoming between the section track, then welds arc shaped blade two ends and back shroud contact position, becomes the enterprising spot welding of section track successively again at each;
Three, each is become spot welding on section track, extend to into a section weld seam, each becomes section weld seam to overlap fully with the corresponding section of one-tenth track, namely finishes the intermittent welding termination process of arc shaped blade and back shroud;
Four, front shroud is fixed on the arc shaped blade, with reference to aforementioned second and third step, front shroud is weldingly fixed on the arc shaped blade.
This inventive method is used for processing totally-enclosed impeller.
The present invention intermittently weld impeller have simple in structure, mechanical strength is high, dimensional changes little advantage before and after the welding is the desirable substitute products of existing stainless steel welding impeller, its welding method step is simple, easy to operate.
Description of drawings
The present invention is intermittently welded impeller and welding method is described further below in conjunction with accompanying drawing:
Fig. 1 is the schematic rear view of this interrupted welding impeller mode of execution one;
Fig. 2 is the front-view schematic diagram of this interrupted welding impeller mode of execution two;
Fig. 3 is these interrupted welding impeller mode of execution two axial section structural representations.
Among the figure: 1 is the section of one-tenth weld seam for increasing back sealing ring, 8 for the section of one-tenth track, 7 for wheel hub, 6 for front shroud, 5 for disconnected solder joint, 4 for arc shaped blade, 3 for back shroud, 2.
Embodiment
Mode of execution one: as shown in Figure 1, this interrupted welding impeller comprises back shroud 1 and many arc shaped blades 2, described arc shaped blade 2 uniform weldings are on back shroud 1, it is characterized in that: described arc shaped blade 2 is separated into the multistage section of one-tenth weld seam 6 with weld seam between the back shroud 1, and each section becomes to be provided with disconnected solder joint 3 between the section weld seam 6.
It is 20～30 millimeters that described disconnected solder joint 3 length≤5 millimeters, each section become section weld seam 6 fusion lengths.
The following step of its welding method:
One, the arc shaped blade 2 of moulding is fixed on the back shroud 1;
Two, the trajectory that at first arc shaped blade 2 is contacted with back shroud 1, be divided into multistage and become section track 8, each cuts off solder joint 3 between becoming between the section track 8, then welds arc shaped blade 2 two ends and back shroud 1 contact position, becomes section track 8 enterprising spot weldings successively again at each;
Three, each is become spot welding on section track 8, extend to into section weld seam 6, each becomes section weld seam 6 to overlap fully with the corresponding section of one-tenth track 8, namely finishes the intermittent welding termination process of arc shaped blade and back shroud.
Mode of execution two: shown in Fig. 2,3: this interrupted welding impeller also comprises front shroud 4, described arc shaped blade 2 is clipped between this front shroud 4 and the back shroud 1, front shroud 4 is welded and fixed with arc shaped blade 2, and front shroud 4 also is divided into the multistage section of one-tenth weld seam 6 with weld seam between the arc shaped blade 2, each section becomes to be provided with disconnected solder joint 3 between the section weld seam 6, its structure and welding method are referring to mode of execution one, slightly.
The diameter design standard is 260 millimeters finished product impeller, adopts the present invention intermittently to weld, and actual size is the 259.65-259.82 millimeter; Impeller outlet width blade and the weldering of front and rear cover plate place are melted and are reduced 0 to 0.1 millimeter, and between the blade, the front and rear cover plate distortion reduces 0 to 0.2 millimeter.Seamless between front and rear cover plate and the blade after the welding, as deposited strength is high.
Claims (2)
1. the welding method of an interrupted welding impeller comprises the steps:
One, the arc shaped blade of moulding is fixed on the back shroud;
Two, the trajectory that at first arc shaped blade is contacted with back shroud is divided into multistage and becomes the section track, and each cuts off solder joint between becoming between the section track, then welds arc shaped blade two ends and back shroud contact position, becomes the enterprising spot welding of section track successively again at each;
Three, each is become spot welding on section track, extend to into a section weld seam, each becomes section weld seam to overlap fully with the corresponding section of one-tenth track, namely finishes the intermittent welding termination process of arc shaped blade and back shroud.
2. a welding method that contains the interrupted welding impeller of front shroud comprises the steps:
One, the arc shaped blade of moulding is fixed on the back shroud;
Two, the trajectory that at first arc shaped blade is contacted with back shroud is divided into multistage and becomes the section track, and each cuts off solder joint between becoming between the section track, then welds arc shaped blade two ends and back shroud contact position, becomes the enterprising spot welding of section track successively again at each;
Three, each is become spot welding on section track, extend to into a section weld seam, each becomes section weld seam to overlap fully with the corresponding section of one-tenth track, namely finishes the intermittent welding termination process of arc shaped blade and back shroud;
Four, front shroud is fixed on the arc shaped blade, with reference to aforementioned second and third step, front shroud is weldingly fixed on the arc shaped blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010542369 CN101975187B (en) | 2010-11-12 | 2010-11-12 | Intermittently welded impeller and welding method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010542369 CN101975187B (en) | 2010-11-12 | 2010-11-12 | Intermittently welded impeller and welding method thereof |
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| Publication Number | Publication Date |
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| CN101975187A CN101975187A (en) | 2011-02-16 |
| CN101975187B true CN101975187B (en) | 2013-01-23 |
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| CN 201010542369 Active CN101975187B (en) | 2010-11-12 | 2010-11-12 | Intermittently welded impeller and welding method thereof |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103394880B (en) * | 2013-08-15 | 2015-12-09 | 沈阳三科水力机械制造有限公司 | Large-scale circulating pump impeller pendulum weldering forming method |
| CN103600159A (en) * | 2013-11-14 | 2014-02-26 | 湖南泰通电力科技有限公司 | Impeller hub welding process method |
| CN104607849B (en) * | 2015-02-02 | 2015-09-30 | 山东双轮股份有限公司 | Electron-beam welder stainless steel impeller welding procedure and frock |
| CN106670586B (en) * | 2016-12-30 | 2018-08-31 | 重庆水轮机厂有限责任公司 | A kind of medium and small Francis Turbine Blade groove production method |
| CN107639325B (en) * | 2017-09-27 | 2020-07-03 | 阳江市五金刀剪产业技术研究院 | Method for welding blade and cover plate |
| CN111702381A (en) * | 2020-06-23 | 2020-09-25 | 石家庄坚持科技有限公司 | Screen slice welding control method and system and terminal equipment |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2918958A1 (en) * | 1979-05-11 | 1980-11-20 | Kloeckner Humboldt Deutz Ag | RUBBERIZED CENTRIFUGAL PUMP WHEEL |
| DE3709518C2 (en) * | 1987-03-23 | 1995-01-19 | Hilge Philipp Gmbh | Wheel |
| CN2677674Y (en) * | 2003-11-03 | 2005-02-09 | 赵志红 | Steel riveting and welding type fan impeller |
| CN1880776B (en) * | 2005-06-15 | 2010-06-09 | 赵世臣 | Process for producing fan impeller |
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Owner name: LEO GROUP CO., LTD. Free format text: FORMER NAME: ZHEJIANG LEO CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: The coastal town of Leo road in Wenling city 317500 Taizhou city in Zhejiang province No. 1 Patentee after: LEO Group Co., Ltd. Address before: The coastal town of Leo road in Wenling city 317500 Taizhou city in Zhejiang province No. 1 Patentee before: Zhejiang LEO Co., Ltd. |
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Effective date of registration: 20160329 Address after: Wenling City, the Eastern Industrial Agglomeration in Zhejiang province Taizhou city 317500 District Third Street No. 1 Patentee after: LEO GROUP ZHEJIANG PUMP INDUSTRY CO., LTD. Address before: The coastal town of Leo road in Wenling city 317500 Taizhou city in Zhejiang province No. 1 Patentee before: LEO Group Co., Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Intermittent welding impeller and its welding method Effective date of registration: 20201224 Granted publication date: 20130123 Pledgee: Agricultural Bank of China Limited by Share Ltd. Wenling branch Pledgor: LEO GROUP Co.,Ltd. Registration number: Y2020330001271 |