CN103600159A - Impeller hub welding process method - Google Patents

Impeller hub welding process method Download PDF

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Publication number
CN103600159A
CN103600159A CN201310565373.9A CN201310565373A CN103600159A CN 103600159 A CN103600159 A CN 103600159A CN 201310565373 A CN201310565373 A CN 201310565373A CN 103600159 A CN103600159 A CN 103600159A
Authority
CN
China
Prior art keywords
impeller
welding
impeller hub
hub
back shroud
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201310565373.9A
Other languages
Chinese (zh)
Inventor
贺立志
冯宪
胡林
李志鹏
赵斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HUNAN TAITONG ELECTRIC POWER SCIENCE AND TECHNOLOGY Co Ltd
Original Assignee
HUNAN TAITONG ELECTRIC POWER SCIENCE AND TECHNOLOGY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HUNAN TAITONG ELECTRIC POWER SCIENCE AND TECHNOLOGY Co Ltd filed Critical HUNAN TAITONG ELECTRIC POWER SCIENCE AND TECHNOLOGY Co Ltd
Priority to CN201310565373.9A priority Critical patent/CN103600159A/en
Publication of CN103600159A publication Critical patent/CN103600159A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/16—Arc welding or cutting making use of shielding gas
    • B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/0026—Arc welding or cutting specially adapted for particular articles or work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/007—Spot arc welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/02—Seam welding; Backing means; Inserts
    • B23K9/028—Seam welding; Backing means; Inserts for curved planar seams

Abstract

The invention relates to an impeller hub welding process method. The method includes a, using a press to press an impeller hub into an impeller rear cover plate; b, symmetrically welding four or six spot welding points at a position where a pressing-in end of the impeller hub is connected with an impeller rear cover plate, and performing circular seam welding on a positon where the end portion of the other end of the impeller hub is connected with the impeller rear cover plate; c, performing wiredrawing processing on a central hole of the impeller hub after welding. By the method, forming of gaps between the impeller hub and the impeller cover plates can be effectively avoided, welding strength and rigidity of an impeller can be guaranteed, and service life of the impeller can be prolonged.

Description

A kind of impeller hub welding technique
Technical field
The present invention relates to a kind of impeller hub welding technique.
Background technology
For stainless steel stamping parts impeller, the thickness of impeller cover only has 1～3 millimeter conventionally, and in order to improve the strength and stiffness of impeller, its back shroud often need weld the wheel hub of a stainless steel.Because back shroud is sheet member, therefore easily when boxing, produce welding stress, thereby cause the distortion of back shroud, cause impeller hub and impeller cover to occur gap, affect the weld strength between impeller hub and back shroud, affect service life.
Summary of the invention
The present invention solves the deficiencies in the prior art and provides a kind of impeller hub and impeller cover place of effectively avoiding to occur gap, guarantees weld strength and the rigidity of impeller, improves the impeller hub welding technique in the service life of impeller.
The present invention is achieved through the following technical solutions above-mentioned purpose:
An impeller hub welding technique, comprises the steps:
A, impeller hub is pressed into back shroud of impeller with forcing press;
B, at impeller hub, be pressed into end and be symmetrically welded four or six weld nuggets with back shroud of impeller junction, and then circular seam welding is carried out in the junction of the end of the impeller hub other end and back shroud of impeller;
C, the centre bore of impeller hub after welding is carried out to wire drawing processing.
Before welding, remove the spot on impeller hub and back shroud of impeller surface.
Described spot welding adopts argon tungsten-arc welding to carry out, and during spot welding, by the method for symmetrical welding, welds.
The pressure of described forcing press is controlled at 0.5Mpa ± 0.1Mpa.
Adopt said method, the present invention is because back shroud of impeller is sheet member, before boxing, first impeller hub and impeller cover are carried out to the fixing of symmetrical spot welding, the impact of the welding stress while effectively having eliminated welding, thereby weld strength and the rigidity of impeller have been improved, can effectively avoid impeller hub and impeller cover place to occur gap, while preventing in existing impeller hub welding process in boxing, produce the distortion that welding stress causes, improve the service life of impeller.
Accompanying drawing explanation
Fig. 1 is the structural representation after impeller hub and back shroud of impeller are installed.
Fig. 2 is the structural representation of spot welding of the present invention position.
Fig. 3 is weld nugget artwork of the present invention.
Individual in accompanying drawing, 1 is that welding gun head, 2 is that back shroud of impeller, 3 is that girth welding place, 4 is that spot-welded place, 5 is impeller hub.
The specific embodiment
Further describe the specific embodiment of this patent below.
As shown in Figure 1 to Figure 3, impeller hub 5 is located by centre bore, by forcing press, is pressed into back shroud of impeller 2, and interference fit with it.When forcing press press-fits, should make special positioner, and the pressure of forcing press should excessive (pressure be controlled at 0.5Mpa ± 0.1Mpa), in case damage back shroud of impeller 2 while press-fiting by pressure.
Adopt argon tungsten-arc welding (TIG weldering) to carry out spot welding to spot-welded place, the back shroud of impeller back side 4, during spot welding, by the welding sequence of symmetrical welding, with reference to Fig. 3, what 4A-4A ＇-4B-4B ＇ was installed is arranged symmetrically with solder joint in proper order, can reduce the distortion of the inequality generation of being heated.
Control welding current and speed of welding, adopt argon tungsten-arc welding (TIG weldering) back shroud of impeller 2 flange places to be carried out to the girth welding of whole ring seam welding place 3, during welding, by impeller hub 5 centre bores, locate, with welding gun 1 boxing one week.Postwelding keeps face of weld smooth, the mild transition of weld reinforcement, the flavous metallic luster of maintenance weld seam.
During welding, can carry out with reference to following table the debugging of parameter:
The table 1 welding parameter debugging table of comparisons
Stainless steel thickness Tungsten filament diameter Welding current Speed of welding Electric arc height
1mm 1.6mm 60A 3～4mm/s 1.5～2mm
1.5mm 2.4mm 80A 3～4mm/s 1.5～2mm
2.0mm 2.4mm 120A 3～4mm/s 1.5～2mm
2.5mm 2.4mm 150A 3～4mm/s 1.5～2mm
3mm 2.4mm 200A 3～4mm/s 1.5～2mm
Existence due to thermal stress in the process of welding one whole circle, is out of shape centre bore to some extent, therefore postwelding reply endoporus carries out wire drawing processing.

Claims (4)

1. an impeller hub welding technique, is characterized in that, comprises the steps:
A, impeller hub is pressed into back shroud of impeller with forcing press;
B, at impeller hub, be pressed into end and be symmetrically welded four or six weld nuggets with back shroud of impeller junction, and then circular seam welding is carried out in the junction of the end of the impeller hub other end and back shroud of impeller;
C, the centre bore of impeller hub after welding is carried out to wire drawing processing.
2. impeller hub welding technique according to claim 1, is characterized in that, removes the spot on impeller hub and back shroud of impeller surface before welding.
3. impeller hub welding technique according to claim 1, is characterized in that, described spot welding adopts argon tungsten-arc welding to carry out, and during spot welding, by the method for symmetrical welding, welds.
4. impeller hub welding technique according to claim 1, is characterized in that, the pressure of described forcing press is controlled at 0.5Mpa ± 0.1Mpa.
CN201310565373.9A 2013-11-14 2013-11-14 Impeller hub welding process method Pending CN103600159A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310565373.9A CN103600159A (en) 2013-11-14 2013-11-14 Impeller hub welding process method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310565373.9A CN103600159A (en) 2013-11-14 2013-11-14 Impeller hub welding process method

Publications (1)

Publication Number Publication Date
CN103600159A true CN103600159A (en) 2014-02-26

Family

ID=50118455

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310565373.9A Pending CN103600159A (en) 2013-11-14 2013-11-14 Impeller hub welding process method

Country Status (1)

Country Link
CN (1) CN103600159A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111872562A (en) * 2020-07-14 2020-11-03 河南航天液压气动技术有限公司 Welding method of thin-wall bearing piece
CN113601049A (en) * 2021-07-05 2021-11-05 中车青岛四方机车车辆股份有限公司 Circumferential weld welding method and welding device
CN114160920A (en) * 2021-11-02 2022-03-11 重庆红宇精密工业集团有限公司 Welding process method for fixing block of cover assembly

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5529276B2 (en) * 1975-04-25 1980-08-02
JPS5872694A (en) * 1981-10-28 1983-04-30 Hitachi Ltd Impeller with boss and a manufacturing method therefor
CN1103341A (en) * 1994-08-13 1995-06-07 中国水利水电第四工程局机电安装处 Process for installation of in-situ welded large-size disc type water-wheel generator rotor support
JPH07224793A (en) * 1994-02-15 1995-08-22 Ebara Corp Impeller and production thereof
CN200946590Y (en) * 2006-07-27 2007-09-12 上海凯泉泵业（集团）有限公司 Stainless steel stamping and welding impeller
CN201582191U (en) * 2009-12-01 2010-09-15 上海连成（集团）有限公司 Novel structure of low-specific speed impeller
CN101975187A (en) * 2010-11-12 2011-02-16 浙江利欧股份有限公司 Intermittently welded impeller and welding method thereof
CN102996502A (en) * 2012-11-17 2013-03-27 赵景权 Combined welding type water pump impeller and forming method thereof
CN202971303U (en) * 2012-10-31 2013-06-05 上海莲盛泵业制造有限公司 Centrifugal pump impeller

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5529276B2 (en) * 1975-04-25 1980-08-02
JPS5872694A (en) * 1981-10-28 1983-04-30 Hitachi Ltd Impeller with boss and a manufacturing method therefor
JPH07224793A (en) * 1994-02-15 1995-08-22 Ebara Corp Impeller and production thereof
CN1103341A (en) * 1994-08-13 1995-06-07 中国水利水电第四工程局机电安装处 Process for installation of in-situ welded large-size disc type water-wheel generator rotor support
CN200946590Y (en) * 2006-07-27 2007-09-12 上海凯泉泵业（集团）有限公司 Stainless steel stamping and welding impeller
CN201582191U (en) * 2009-12-01 2010-09-15 上海连成（集团）有限公司 Novel structure of low-specific speed impeller
CN101975187A (en) * 2010-11-12 2011-02-16 浙江利欧股份有限公司 Intermittently welded impeller and welding method thereof
CN202971303U (en) * 2012-10-31 2013-06-05 上海莲盛泵业制造有限公司 Centrifugal pump impeller
CN102996502A (en) * 2012-11-17 2013-03-27 赵景权 Combined welding type water pump impeller and forming method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111872562A (en) * 2020-07-14 2020-11-03 河南航天液压气动技术有限公司 Welding method of thin-wall bearing piece
CN113601049A (en) * 2021-07-05 2021-11-05 中车青岛四方机车车辆股份有限公司 Circumferential weld welding method and welding device
CN114160920A (en) * 2021-11-02 2022-03-11 重庆红宇精密工业集团有限公司 Welding process method for fixing block of cover assembly

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Application publication date: 20140226