CN104439680A - Casting repair welding method - Google Patents
Casting repair welding method Download PDFInfo
- Publication number
- CN104439680A CN104439680A CN201410657873.XA CN201410657873A CN104439680A CN 104439680 A CN104439680 A CN 104439680A CN 201410657873 A CN201410657873 A CN 201410657873A CN 104439680 A CN104439680 A CN 104439680A
- Authority
- CN
- China
- Prior art keywords
- welding
- casting
- misrun
- repair welding
- excitational equipment
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- 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
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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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/10—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating making use of vibrations, e.g. ultrasonic 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
- B23K28/00—Welding or cutting not covered by any of the preceding groups, e.g. electrolytic welding
- B23K28/02—Combined welding or cutting procedures or apparatus
Abstract
The invention discloses a casting repair welding method, and belongs to the technical field of welding. The casting repair welding method includes the steps of before-welding preparing, excitation device starting and repair welding. By means of the technical scheme, a defect casting is driven by an excitation device to vibrate, the exciting device is adjusted before fusion welding is started to enable the casting to be at the resonant frequency and the amplitude at which defects can be overcome, fusion welding is carried out at the resonant frequency of the defect casting, all the processes from liquid phase generating in a seaming area to overcall fusion welding completing are completed under the resonant condition, and the aim that in the vibration welding technology, the resonant frequency needs to be achieved within a short period of time after welding is started is achieved; meanwhile, as the resonant time is prolonged to last several minutes after fusion welding is completed, crystallization is more sufficient in the fusion welding process, and the effects of completely repairing the defect casting and avoiding the welding defects such as cracks are achieved.
Description
Technical field
The invention belongs to welding technology field, relate to a kind of defect-restoration method therefor of foundry goods, especially relate to a kind of repair welding of casting method.
Background technology
In castings production, foundry goods often adopts the form of repair welding to reprocess, to reduce the scrappage of faulty goods.And easily there is the weld defects such as crackle in foundry goods postwelding.The mode that repair welding of casting in conventional art the most often adopts is manual electric arc welding, and the repair welding of casting quality of castings production producer needs the technical merit of dependence solder technology workman and experience just can be guaranteed; Along with the progress of solder technology, the welding equipment of repair welding foundry goods and technology are also more advanced, and as vacuum argon arc welding, electron beam welding etc., also have emerging vibration welding technology, different welding techniques has the condition and scope that adapt with it, for you to choose.The publication adopting vibration welding technology to improve hardware welding quality has a lot, the patent of invention being 200710049718.X as application number discloses a kind of water wheel generating set cast steel part defect repair welding crackle processing method, by steps such as removal of defects, preheating, welding and after welding treatment, solve a difficult problem for water wheel generating set cast steel part defect repair welding crackle.But this type of technology is all with after hardware welding fabrication, welding quality is improved again by vibration processing mode, the elimination of mode to the melting welding defect that fusion welded zone has produced of this postwelding vibration processing more but can not play effect, because during melting welding to be in the liquid phase time very short in seam district, when using postwelding vibration processing, its resonant frequency reaching elimination defect and amplitude must be made rapidly before seam district solidifies, otherwise produce once melting welding defect and just cannot eliminate, as weld crack etc., and vibration frequency to be adjusted to suitable resonant frequency and amplitude within the extremely short time, it is again extremely scabrous technical barrier.
Summary of the invention
In order to solve the problem, the invention provides a kind of repair welding of casting method, thus reaching good repairing effect.
The present invention is achieved by following technical solution.
A kind of repair welding of casting method, comprises the steps:
(1) misrun casting is needed repair welding place bevel, foundry goods is fixed on excitational equipment by fixture, vibrating sensor is connected respectively with misrun casting, excitational equipment and control panel, switches on power;
(2) excitational equipment is set by control panel, selects the vibration frequency adapted with misrun casting, start excitational equipment, make misrun casting under excitational equipment drives with set frequency vibration;
(3) control panel is observed, after misrun casting vibrates and reaches resonance under excitational equipment effect, start to need repair welding place to carry out melting welding to misrun casting, in fusion process, keep misrun casting to resonate, continue after melting welding completes to keep misrun casting resonance state 33 ~ 38min.
Further, in described step (3), melting welding welding wire used is identical with the chemical composition of misrun casting.
Further, in described step (3), whole operating process is carried out under argon gas stream protection.
Further, in described step (3), continue after melting welding completes to keep misrun casting resonance state 35min.
The invention has the beneficial effects as follows:
A kind of repair welding of casting method of the present invention, misrun casting vibration is driven by excitational equipment, before starting to carry out melting welding, namely adjust excitational equipment makes foundry goods reach resonant frequency and the amplitude of elimination defect, and melting welding is carried out under the resonant frequency of misrun casting, seam district is all completed to all processes completing whole melting welding from generation liquid phase under resonance condition, make foundry goods remain at melting welding crystallization under resonance state, solving vibration welding technology needs in the difficult problem starting to reach in the short time of welding resonant frequency; Also extend simultaneously resonance time complete to melting welding after several minutes in, make crystallization in fusion process more abundant, fusion welded zone organizes crystal grain to obtain refinement more fully, reach complete correction misrun casting, and avoid the effect of weld defects such as cracking, effectively improve the qualification rate of repair welding of casting; In addition, it is low that this method also has cost, practicality and the high advantage of reliability.
Accompanying drawing explanation
Fig. 1 is each member connection structure schematic diagram of the present invention when working.
In figure: 1-welding wire, 2-electric arc, 3-argon gas stream, 4-welding gun, 5-misrun casting, 6-fixture, 7-vibrating sensor, 8-excitational equipment, 9-control panel.
Detailed description of the invention
Technical scheme of the present invention is further described below in conjunction with accompanying drawing, but described in claimed scope is not limited to.
A kind of repair welding of casting method, comprises the steps:
(1) misrun casting is needed repair welding place bevel, foundry goods is fixed on excitational equipment by fixture, vibrating sensor is connected respectively with misrun casting, excitational equipment and control panel, switches on power;
(2) excitational equipment is set by control panel, selects the vibration frequency adapted with misrun casting, start excitational equipment, make misrun casting under excitational equipment drives with set frequency vibration;
(3) control panel is observed, after misrun casting vibrates and reaches resonance under excitational equipment effect, start to need repair welding place to carry out melting welding to misrun casting, melting welding welding wire used is identical with the chemical composition of misrun casting, keep misrun casting to resonate in fusion process, continue after melting welding completes to keep misrun casting resonance state 33 ~ 38min; Whole soldering operation process is carried out under argon gas stream protection.
Embodiment
A kind of repair welding of casting method of the present invention, as shown in Figure 1, for a GTAW Vibration Welding, it comprises welding wire 1, electric arc 2, welding gun 4, fixture 6, vibrating sensor 7, excitational equipment 8 and control panel 9, comprises the steps:
(1) misrun casting 5 is needed repair welding place bevel, misrun casting 5 is fixed on excitational equipment 8 by fixture 6, vibrating sensor 7 is connected respectively with misrun casting 5, excitational equipment 8 and control panel 9, switches on power;
(2) excitational equipment 8 is set by control panel 9, selects the vibration frequency adapted with misrun casting 5, start excitational equipment 8, make misrun casting 5 under the drive of excitational equipment 8 with set frequency vibration;
(3) control panel 9 is observed, after misrun casting 5 vibrates and reaches resonance under the effect of excitational equipment 8, select suitable welding current, start to need repair welding place to carry out melting welding to misrun casting 5, melting welding welding wire used is identical with the chemical composition of misrun casting, during repair welding, welding wire 1 is sent into from side, under the heat effect of electric arc 2, welding wire 1 and misrun casting 5 are fused together and form molten bath, misrun casting 5 is kept to resonate in fusion process, continuation maintenance resonance in 35 minutes after melting welding completes, fusion welded zone tract tissue is made to obtain refinement, eliminate foundry goods melting welding stress deformation, the usage safety performance of foundry goods is protected, the argon gas stream 3 that the whole process of repair welding of casting sprays in welding gun 4 completes under protecting.
Technical solutions according to the invention also can be applied in other welding methods of foundry goods.
Claims (4)
1. a repair welding of casting method, is characterized in that, comprises the steps:
(1) misrun casting is needed repair welding place bevel, foundry goods is fixed on excitational equipment by fixture, vibrating sensor is connected respectively with misrun casting, excitational equipment and control panel, switches on power;
(2) excitational equipment is set by control panel, selects the vibration frequency adapted with misrun casting, start excitational equipment, make misrun casting under excitational equipment drives with set frequency vibration;
(3) control panel is observed, after misrun casting vibrates and reaches resonance under excitational equipment effect, start to need repair welding place to carry out melting welding to misrun casting, in fusion process, keep misrun casting to resonate, continue after melting welding completes to keep misrun casting resonance state 33 ~ 38min.
2. a kind of repair welding of casting method according to claim 1, it is characterized in that: in described step (3), melting welding welding wire used is identical with the chemical composition of misrun casting.
3. a kind of repair welding of casting method according to claim 1, is characterized in that: in described step (3), and whole operating process is carried out under argon gas stream protection.
4. a kind of repair welding of casting method according to claim 1, is characterized in that: in described step (3), continues to keep misrun casting resonance state 35min after melting welding completes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410657873.XA CN104439680A (en) | 2014-11-18 | 2014-11-18 | Casting repair welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410657873.XA CN104439680A (en) | 2014-11-18 | 2014-11-18 | Casting repair welding method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104439680A true CN104439680A (en) | 2015-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410657873.XA Pending CN104439680A (en) | 2014-11-18 | 2014-11-18 | Casting repair welding method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104439680A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104842061A (en) * | 2015-05-05 | 2015-08-19 | 柳州金茂机械有限公司 | Vibrating welding process |
| CN105537735A (en) * | 2016-03-08 | 2016-05-04 | 哈尔滨东安发动机（集团）有限公司 | Repair welding method for magnesium alloy casting oil way |
| CN108747196A (en) * | 2018-05-30 | 2018-11-06 | 广东中天创展球铁有限公司 | A kind of weldering repair renovation method of ductile iron workpiece |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1273898A (en) * | 1999-05-12 | 2000-11-22 | 大连理工大学 | Vibration welding technology |
| CN202317429U (en) * | 2011-10-27 | 2012-07-11 | 中冶南方(武汉)威仕工业炉有限公司 | Vibratory welding device for alloy weldment |
| CN102773590A (en) * | 2012-07-17 | 2012-11-14 | 山西平阳重工机械有限责任公司 | Small-section square girder and welding process thereof |
| WO2013055233A1 (en) * | 2011-10-13 | 2013-04-18 | Brent Felix Jury | Apparatus and method of flash butt welding of railway lines |
| CN104842061A (en) * | 2015-05-05 | 2015-08-19 | 柳州金茂机械有限公司 | Vibrating welding process |
-
2014
- 2014-11-18 CN CN201410657873.XA patent/CN104439680A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1273898A (en) * | 1999-05-12 | 2000-11-22 | 大连理工大学 | Vibration welding technology |
| WO2013055233A1 (en) * | 2011-10-13 | 2013-04-18 | Brent Felix Jury | Apparatus and method of flash butt welding of railway lines |
| CN103874559A (en) * | 2011-10-13 | 2014-06-18 | B·F·朱里 | Apparatus and method of flash butt welding of railway lines |
| CN202317429U (en) * | 2011-10-27 | 2012-07-11 | 中冶南方(武汉)威仕工业炉有限公司 | Vibratory welding device for alloy weldment |
| CN102773590A (en) * | 2012-07-17 | 2012-11-14 | 山西平阳重工机械有限责任公司 | Small-section square girder and welding process thereof |
| CN104842061A (en) * | 2015-05-05 | 2015-08-19 | 柳州金茂机械有限公司 | Vibrating welding process |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104842061A (en) * | 2015-05-05 | 2015-08-19 | 柳州金茂机械有限公司 | Vibrating welding process |
| CN105537735A (en) * | 2016-03-08 | 2016-05-04 | 哈尔滨东安发动机（集团）有限公司 | Repair welding method for magnesium alloy casting oil way |
| CN108747196A (en) * | 2018-05-30 | 2018-11-06 | 广东中天创展球铁有限公司 | A kind of weldering repair renovation method of ductile iron workpiece |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150325 |
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| RJ01 | Rejection of invention patent application after publication |