CN107234355B - Box component separate type is broken self-retaining REPAIR WELDING method - Google Patents
Box component separate type is broken self-retaining REPAIR WELDING method Download PDFInfo
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- CN107234355B CN107234355B CN201710602211.6A CN201710602211A CN107234355B CN 107234355 B CN107234355 B CN 107234355B CN 201710602211 A CN201710602211 A CN 201710602211A CN 107234355 B CN107234355 B CN 107234355B
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- welding
- self
- retaining
- box component
- separate type
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Classifications
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- 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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
- B23P6/04—Repairing fractures or cracked metal parts or products, e.g. castings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a kind of box component separate types to be broken self-retaining REPAIR WELDING method, it is repaired using self-retaining modus operandi, first square groove, utilize irregular breach caused by its fracture, it is coincide naturally, it is removed the angle grinder polishing of identical contact point is unfavorable for individually, then it can be resisted into certain deformability as lower opposite compress of platform tool, segmented welding is carried out in relative position by two welders, platform tool is removed after the completion of welding, U-shaped groove is opened in symmetric position segmentation afterwards, every section can about open 200mm long, it is operated simultaneously by two skilled welders again, it need to guarantee to penetrate.In the other side, bevel is welded again again after being soldered, and so on, until welding is completed.To maximally reduce welding deformation size.It is secured that plane of disruption deflection is controlled using the box component after method REPAIR WELDING of the invention, service life is extended, has saved cost.
Description
Technical field
The invention belongs to machinery fields, are related to preparation equipment jaw crusher Hubei Province body of box structure, and in particular to box-shaped
The post-rift self-retaining REPAIR WELDING method of component Hubei Province body separate type.
Background technique
Box component component is a kind of common structure in mechanical equipment, and the box structure used in mechanical equipment is often
There is certain required precision to morpheme, flatness size, does not otherwise just have use condition.Such box component is typically all
Cast construction, material multiselect cast steel, separation fracture are typically all brittle fracture, what crucial problem still generated after welding
In deformation.Using first bevel and then centering, solid point when general REPAIR WELDING, subsequently by the welding method of control deformation
How welding due to the powerful stress generated when welding, then controls and also results in biggish deformation, and deformation, which is unable to control, is being permitted
Can within the scope of, thus make REPAIR WELDING work can not be succeeded.The difficulty of its REPAIR WELDING of separate type away structure is main
Form and position error and flatness error caused by welding generates due to deformation, so that there are certain reparation difficulty.And
Take measures when welding it is improper caused by deformation make its loss of significance and be not available.If can solve or control its deformation error
Within the scope of certain, there is important economic value to the reduction of cost in production.
Summary of the invention
The present invention in order to solve jaw crusher move Hubei Province body fracture after in repair process due to deformation be unable to control permitted
It can lead to repairing failure in range, provide and self-retaining REPAIR WELDING method is broken to box component separate type, can will deform
It controls in tolerance band, not only save the cost, but also firm welding extends service life.
The present invention is achieved by the following technical solutions: box component separate type is broken self-retaining REPAIR WELDING method, tool
Body includes the following steps；
Step A. forms self-retaining weld seam: first square groove, using irregular caused by after the fracture of box component separate type
It coincide by breach naturally, removes the angle grinder polishing of identical contact point is unfavorable for individually, the morpheme before being restored to fracture
State；Then lower opposite compress of platform tool is placed it in be segmented on the opposite crack of the irregular breach of component by two welders
Welding, the self-retaining weld seam for forming a closure are tentatively repaired, and low ash steel electrode are selected when self-retaining is welded, fusion penetration reaches
2.5-3.5mm；
Step B. through welding welding: irregular breach caused by box component being separated after being broken all close by welding formation one
After the weld seam of self-retaining up and down closed, removal platform tool, then above and below the irregular breach of component or/and left and right is opposite from solid
Determine to be segmented bevel on weld seam, You Liangming welder carries out through welding welding corresponding point after segmentation simultaneously, divides again after being soldered
Section bevel welding and so on until all welding is completed, finally welds capping layer；
Step C. is placed on outdoor place 6 months to soldered component and can be used.
Above-mentioned opposite position is entire breach midpoint, left and right midpoint or/and relative angle up and down.
Preferably, U-shaped groove is opened for thicker workpiece segmentation in the segmentation bevel, or opens I shape groove cushioning
The welding form of plate penetrates welding.
Preferably, the welding of segmentation bevel through welding is welded using intermediate to both ends welding or both ends to intermediate welding method
It connects.
To mounting plane processing after welding: it being considered as K grades to flatness tolerance grade, tables look-up and knows that workpiece is 300-
1000 worst error is 0.6mm；Its flatness is surveyed using table mensuration is beaten: tested part and dial gauge are placed on standard
It is point-by-point along actual surface or surveyed along several rectilinear directions with dial gauge using standard platform as measurement datum on platform
Amount.The maximum variation that dial gauge measures in entire actual surface is the flatness error of the actual surface.According to measuring
Data high point is modified.
The beneficial effects of the present invention are:
1. the size of weld size is directly related to welding workload and welding deformation, weld size not only increases greatly weldering
Workload is connect, and welding deformation can also increase accordingly, the present invention uses self-retaining to weld first, first welds a thin layer of weld seam and keeps away
Exempt to weld bring deformation below, within the range of permission Deformation control, and self-retaining welds the first layer to be formed certainly
Fixation weld is gradually got rid of in the normal weld below, to maximally reduce welding deformation size.Using
The box component plane of disruption after method REPAIR WELDING of the invention is secured, extends service life, has saved cost.
2. weld width is able to satisfy welding and needs present invention employs lesser welding 0~3mm of reinforcement.In order to keep away
The problem of exempting from out double V-groove causes weld seam to be widened, and increases workload and deflection, the present invention opens U-shaped slope for thicker workpiece
The problem of mouth, locality condition opens the welding form of I shape groove cushioning plate, further reduces seam deformation amount when permitting.
4. different direction welding cause different welding tensile stresses.The present invention use from centre to both ends weld or both ends
To intermediate welding method, Reducing distortion is comparatively facilitated.
5. the present invention is placed on the outdoor ageing treatment for carrying out 6 months to soldered component, reach to inside workpiece
Stress plays considerable degree of abatement and self negative function.
6. surveying its flatness using table mensuration is beaten: tested part and dial gauge being placed on standard platform, with standard
Platform is as measurement datum, and point-by-point along actual surface or measure along several rectilinear directions with dial gauge, dial gauge is whole
The maximum variation measured in a actual surface is the flatness error of the actual surface.According to the data measured to high point into
Row amendment.According to said method amendment reduces workload.
Detailed description of the invention
Fig. 1 has the motor-driven Hubei Province main view of jaw crushing of faulted joint；
Fig. 2 Fig. 1 top view；
Section pad schematic diagram at the crack Fig. 3.
Specific embodiment
Box component separate type is broken self-retaining REPAIR WELDING method, specifically includes following steps；
Step A. forms self-retaining weld seam: self-retaining weld seam square groove, will using irregular breach caused by its fracture
It coincide naturally, removes the angle grinder polishing of identical contact point is unfavorable for individually, the morpheme state before being restored to fracture；So
After place it in lower opposite compress of platform tool and can resist certain deformability, then carried out by two welders in opposite position
Segmented welding forms a very thin self-retaining weld seam；
Step B. through welding welding: all welding is formed certainly irregular breach caused by after box component separate type is broken
After fixation weld, removal platform tool, wherein low ash steel electrode is selected when self-retaining is welded, electric current reaches 3mm or so i.e. by fusion penetration
It can；Then, after the fracture of box component separate type caused by irregular breach symmetric position segmentation open U-shaped or I shape groove, often
Section opens 200mm long, is then carried out simultaneously from centre to two sides welding or two sides to intermediate welding method from two welders to institute
Bevel through welding welding, in the other side, bevel is welded again again after being soldered, and so on, until all welding is completed.
Step C. to soldered component be placed on it is outdoor carry out place 6 months progress ageing treatments.
To mounting plane processing after welding: it being considered as K grades to flatness tolerance grade, tables look-up and knows that workpiece is 300-
1000 worst error is 0.6mm；Its flatness is surveyed using table mensuration is beaten: tested part and dial gauge are placed on standard
It is point-by-point along actual surface or surveyed along several rectilinear directions with dial gauge using standard platform as measurement datum on platform
Amount.The maximum variation that dial gauge measures in entire actual surface is the flatness error of the actual surface.According to measuring
Data high point is modified.
Embodiment
As shown in Figure 1, 2, the through crack of the motor-driven Jaw plate of jaw crushing is a, and two workpiece that separate type is broken have been coincide
Cheng Hou is had by platform and is compressed, and is carried out segmented welding by two skilled welders and is formed a very thin self-retaining weld seam；Specific such as Fig. 3
Shown: irregular breach is divided into four working faces up and down, and each working face is greatly to being divided into three sections, when working face is longer
It can be divided into multistage, can flexibly grasp, fusion penetration, which should not be too large 3mm or so, when welding is advisable.It is disconnected below against A-A shown in Fig. 3
Face schematic diagram illustrates order of work；
1. welded by 2,5 in Fig. 3, from midpoint respectively to two sides backstep welding when welding；
2. welded by 8,11 in Fig. 3, from midpoint respectively to two sides backstep welding when welding；
3. to welded corner joint by 1,6 in Fig. 3, from midpoint respectively to two sides backstep welding when welding；
4. welded by 3,4 in Fig. 3, from midpoint respectively to two sides backstep welding when welding；
5. welded by 7,12 in Fig. 3, from midpoint respectively to two sides backstep welding when welding；
6. welded by 9,10 in Fig. 3, from midpoint respectively to two sides backstep welding when welding.
So far whole self-retainings of faulted joint up and down are completed, form the self-retaining weld seam up and down of closure.So
Start the through welding welding of next stage afterwards.Open U-shaped groove from 2,5 positions at this time or shown in the diagram 3, from midpoint to
Two sides backstep welding will guarantee weldquality by specification welding, notice otherwise interlayer temperature excessively high should not will lead to coarse grains, best
Control is at 350 DEG C or less.Weld seam is essentially filled with here, and leaving behind capping layer not weld, whole welding procedures and it is aforementioned from
It is consistent to be fixedly welded method.The welding of capping layer is finally carried out, first by 9,8,7 and 12,11,10 continuous welding, then by 3,2,1 and 6,
5,4 continuous welding.
Claims (4)
1. a kind of box component separate type is broken self-retaining REPAIR WELDING method, it is characterised in that: specifically includes the following steps:
Step A. formed self-retaining weld seam: first square groove, using box component separate type fracture after caused by anarchial cleavage
Mouthful, it is coincide naturally, is removed the angle grinder polishing of identical contact point is unfavorable for individually, the morpheme shape before being restored to fracture
State；Then it places it in lower opposite compress of platform tool and carries out segmentation weldering on the opposite crack of the irregular breach of component by two welders
It connects, entire breach is made to form the self-retaining weld seam of a closure；
Step B. through welding welding: formation after irregular breach caused by after the above-mentioned separation fracture by box component has all welded
Up and down everywhere after self-retaining weld seam of closure, removal platform tool, then self-retaining weld seam and left and right self-retaining above and below component
Bevel is segmented on weld seam respectively, You Liangming welder carries out through welding welding simultaneously, and so on, until all welding is completed, most
Capping layer is welded afterwards；
Step C. is placed on outdoor place 6 months to soldered component and can be used.
2. box component separate type as described in claim 1 is broken self-retaining REPAIR WELDING method, it is characterised in that: point
U-shaped groove is opened for workpiece segmentation in section bevel, or opens the welding form through welding welding of I shape groove cushioning plate.
3. box component separate type as claimed in claim 1 or 2 is broken self-retaining REPAIR WELDING method, it is characterised in that: segmentation
The welding of bevel through welding is welded using intermediate to both ends welding or both ends to intermediate welding method.
4. box component separate type as claimed in claim 1 or 2 is broken self-retaining REPAIR WELDING method, it is characterised in that: step A
In, low ash steel electrode is used when welding, fusion penetration reaches 2.5-3.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710602211.6A CN107234355B (en) | 2017-07-21 | 2017-07-21 | Box component separate type is broken self-retaining REPAIR WELDING method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710602211.6A CN107234355B (en) | 2017-07-21 | 2017-07-21 | Box component separate type is broken self-retaining REPAIR WELDING method |
Publications (2)
| Publication Number | Publication Date |
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| CN107234355A CN107234355A (en) | 2017-10-10 |
| CN107234355B true CN107234355B (en) | 2019-04-26 |
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| CN201710602211.6A Active CN107234355B (en) | 2017-07-21 | 2017-07-21 | Box component separate type is broken self-retaining REPAIR WELDING method |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5321233A (en) * | 1992-09-15 | 1994-06-14 | Northern Illinois Gas | Electrofusion fitting and sealing method for distribution line |
| CN1256987A (en) * | 1999-12-17 | 2000-06-21 | 孙凤洲 | Technique for dovetail groove-welding |
| EP2131989B1 (en) * | 2007-04-02 | 2011-07-06 | HBS Bolzenschweiss-Systeme GmbH & Co. KG | Welding bit holder |
| CN104526253A (en) * | 2015-01-09 | 2015-04-22 | 江苏龙胜机床制造有限公司 | Four-roll plate bending machine rack crack welding and repairing method |
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