CN203109413U - End tab for repair - Google Patents
End tab for repair Download PDFInfo
- Publication number
- CN203109413U CN203109413U CN 201220706084 CN201220706084U CN203109413U CN 203109413 U CN203109413 U CN 203109413U CN 201220706084 CN201220706084 CN 201220706084 CN 201220706084 U CN201220706084 U CN 201220706084U CN 203109413 U CN203109413 U CN 203109413U
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- tab
- run
- groove
- plate body
- welding
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Abstract
The utility model provides an end tab for repair, comprising a plate body, wherein one face of the plate body is provided with a groove matched with a welding joint surplus height, the side wall of the plate, penetrated by the groove, is of a slope face, and an included angle of 30-45 degrees is formed between the slope face and the plane where the groove of the plate body is positioned. The end tap for the repair is simple, reasonable and compact in structure, overcomes the multiple shortages of the existing end tap for repair, and is capable of quickening the heat conduction between base materials and the end tab, improving the pass percent and reducing the welding defects of repair as the contact areas among the end tap, the base material and the welding joint are increased.
Description
Technical field
The utility model relates to solder technology, relates in particular to a kind of reprocessing and uses run-on tab.
Background technology
When adopting ray or ultrasonic inspection detection weld seam to find that weld seam exists volume and area defective (this defective mostly is weld seam local problem), need reprocess this weld defect.The general welding method of reprocessing is at present: adopt milling tool that defective is removed from weld seam according to assay, the position of removing defective is zone to be welded, treat the welding zone territory then and be soldered to the weld seam reset condition, namely keep reprocessing the whole consistent of weld seam and original weld seam.For guaranteeing to reprocess welding quality, avoid producing the weld defect that exceeds standard at weld seam 1 initiating terminal, need adopt when reprocessing welding and reprocess with run-on tab 1, existing reprocessing with run-on tab as shown in Figure 1, it is a rectangular slab, one sidewall of this rectangular slab is domatic, and this domatic and an angle face of rectangular slab are slope angle, and this slope angle is 30-45 °.
Adopt and existingly to reprocess that to reprocess the concrete steps of weld seam with run-on tab as follows:
Remove weld defect earlier, guarantee that regional root width to be welded is not less than 5mm, the domatic root milling in regional two ends to be welded makes domatic angle less than 30 ° to rounding off, namely the vertical transitional region gradient from domatic root to the face of weld reinforcement be one less than 30 the degree angles, see Fig. 2.
To weld with run-on tab 3 and lie against on the weld seam 1 before reprocessing welding, this welding is fitted with domatic edge and the regional initiating terminal to be welded edge of run-on tab 3, i.e. welding is connected with vertical transitional region with the domatic of run-on tab 3, and will be between the run-on tab of weld seam 1 initiating terminal and mother metal 2 tack welding.
As mother metal thickness 〉=8mm, need to adopt oxy-acetylene flame preheating zone to be welded before the welding, use the contact temperature-measuring instrument to carry out temperature survey, make temperature control at 80 ℃～120 ℃, carrying out multi-pass welding when connecing, interlayer temperature is controlled at 100 ℃～120 ℃.
Treat the welding zone territory then and reprocess welding, reprocess after welding finishes, adopt manual milling mode polishing tack welding to reprocess with removal and use run-on tab, only keep original weld seam and reprocess soldering place weld seam, the weld seam junction is polished smooth, and consistent with the both sides weld bead height.
Adopt existing reprocessing to carry out weld seam with run-on tab and reprocess, there is following shortcoming: because tabular when reprocessing with run-on tab on being assemblied in weld seam, can not fit with weld reinforcement (about 2mm), reprocess with the contact area of run-on tab and weld reinforcement minimumly, cause in the welding process heat conducting effect poor.Reprocess with the higher welding quality that will have a strong impact on vertical transitional region of run-on tab amount of localized heat, easily produce defectives such as weld porosity, weld crack.Simultaneously can cause also that softening can appear in the heat affected area in the welding point because local temperature is higher, strength of parent is reduced.
The utility model content
The purpose of this utility model is, at the above-mentioned existing problem of using run-on tab and weld seam and mother metal contact area little of reprocessing, proposes a kind of reprocessing and uses run-on tab, with the tight advantage that contact of realization with weld seam and mother metal.
For achieving the above object, the technical solution adopted in the utility model is: a kind of reprocessing used run-on tab, comprise plate body, the one side of described plate body has the groove that matches with weld reinforcement, at least one sidewall that is worn by groove on the described plate body is domatic, described domatic and angle plate body upper groove place face are 30-45 °, and namely slope angle is 30-45 °.
Further, described plate body is identical with the material of welding base metal.
Further, described plate body is identical with the thickness of welding base metal, and this thickness refers to remove on the plate body thickness of groove, domatic position.
Further, described domatic and angle plate body upper groove place face are 35-45 °.
Further, described groove is arc groove, and the opening of described arc groove is wide
Wherein t is that mother metal thickness, α are that bevel angle, b are the root gap of weld.Wherein X is groove fusing amount, is the welding process amount of being melted of considering mother metal groove both sides, X=1～5mm, preferred X=1～3mm.
Further, the radius of described arc groove
H is weld reinforcement.
The utility model is reprocessed with the using method of run-on tab as follows:
At first, remove weld defect, make regional root width to be welded be not less than 5mm, and be milled into rounding off with two side slope roots, domatic angle is less than 30 °, namely the vertical transitional region gradient from the domatic root in zone to be welded to face of weld be one less than the angles of 30 degree.
Cause more heat input because reprocess welding meeting butt welded seam, therefore the utility model is reprocessed with run-on tab and is not adopted tack welding to fix, and adopt the jig chucking fixing, for example adopt " F " type jig chucking fixing, adopt this jig chucking to fix and to reduce the heat input that the tack welding process causes.
Reprocess after welding finishes, treat that mother metal is cooled to room temperature and removes jig, milling is removed to reprocess and use run-on tab then, and only keep original weld seam and reprocess weld seam, and the weld seam junction is polished smooth, and consistent with the both sides weld bead height.
It should be noted that owing to reprocess the welding multidigit in the weld seam part, and it is generally shorter to reprocess fusion length, is carrying out multi-pass welding when connecing, note interlayer temperature control at 100 ℃～120 ℃, overheated to prevent mother metal., should use the mode of flame heat to treat the welding zone territory after run-on tab assembling is finished and carry out warm-up operation more than or equal to 8mm as mother metal thickness.Use the contact temperature-measuring instrument to carry out temperature survey, temperature is controlled at 80 ℃～120 ℃, and because the material at the domatic place of run-on tab is thinner, flame should be away from run-on tab in warm.
The utility model is reprocessed with run-on tab simple and reasonable for structure, compact, this is reprocessed with run-on tab and is provided with the groove that matches with weld reinforcement, make and reprocess with run-on tab and weld seam and the increase of mother metal contact area, accelerated the heat conduction between mother metal and run-on tab, improve weld seam and reprocess qualification rate, reduce and reprocess the welding generation of defects.Mother metal and the quickening of reprocessing with heat conduction between run-on tab have reduced bath temperature, prevent from being ahead of the generation that vertical transitional region that the molten bath causes and groove root easily produce incomplete fusion and weld porosity situation because of the deposite metal.Further prevented because reprocessing when welding striking place defective, caused the weld seam part to repeat welding and increase heat input, the situation that strength of welded joint is reduced.This reprocesses the welding of reprocessing that is particularly useful for aluminum alloy MIG (welding) welding with run-on tab.
Description of drawings
Fig. 1 is the existing working state schematic representation of reprocessing with run-on tab;
Fig. 2 is the right view of Fig. 1;
Fig. 3 reprocesses the front view of using run-on tab for the utility model;
Fig. 4 is the right view of Fig. 3;
Fig. 5 reprocesses the working state schematic representation of using run-on tab for the utility model;
Fig. 6 is the right view of Fig. 5;
Fig. 7 is the stereogram of Fig. 5;
Fig. 8 reprocesses the structural representation that is installed with run-on tab for the utility model.
The specific embodiment
Fig. 3 reprocesses the front view of using run-on tab for the utility model; Fig. 4 is the right view of Fig. 3; Fig. 5 reprocesses the working state schematic representation of using run-on tab for the utility model; Fig. 6 is the right view of Fig. 5; Fig. 7 is the stereogram of Fig. 5; Fig. 8 reprocesses the structural representation that is installed with run-on tab for the utility model.
Present embodiment discloses a kind of reprocessing with run-on tab 3, be that the double V-groove butt weld of the aluminium alloy plate of 10mm is reprocessed and is welded as example with thickness, shown in Fig. 3-8, this is reprocessed with run-on tab 3 and comprises plate body, the identical aluminium alloy plate that is of material of this plate body and welding base metal, and this plate body is also identical with the thickness of welding base metal, the specification of this concrete plate body is thickness 10mm * wide 50mm * long 100mm, the one side of this plate body has the groove that matches with weld seam 1 reinforcement, the cross sectional shape that is groove should be able to hold the weld reinforcement that protrudes from mother metal 2 surfaces, and this groove adopts machined to finish; A sidewall that is worn by groove on this plate body is domatic, this domatic and angle (slope angle) plate body upper groove place face are 40 °, in the rewelding termination process, this welding is fitted with the domatic edge of run-on tab 3 and the weld seam initiating terminal of edges of regions to be welded, this angle has reduced to reprocess with run-on tab 3 domatic and to be welded regional 7 vertical transitional region surface bevel angle differences, realizes that straight line connects so that reprocess welding.
Because weld reinforcement is circular arc, so the groove of Pei Heing is arc groove with it, the opening of this arc groove is wide
Wherein t is that mother metal thickness, α are that bevel angle, b are the root gap of weld.Wherein X is groove fusing amount, is the welding process amount of being melted of considering mother metal groove both sides, so its fusing amount of one-sided groove is about 1.5mm, and X=3mm then.The width c=14.2mm of this groove as calculated
The radius of this arc groove
H is weld reinforcement.The weld reinforcement value should be 0mm≤h≤1.5+0.1b(reinforcement value with reference to aluminium and alloy arc-welding seam-flaw evaluation group ISO10042B grade standard thereof by standard), weld seam 1 reinforcement mean value h=2mm in the present embodiment.Then, determine to reprocess the size that run-on tab 3 grooves are used in welding by width and the reinforcement of weld seam 1.And by computing formula machined parameters is defined as the groove circular arc
Disclosed the reprocessing of present embodiment uses the using method of run-on tab as follows:
At first, remove weld defect, make regional 7 root width to be welded reach 5mm, and be milled into rounding off with two side slopes, domatic angle is less than 30 °, namely the vertical transitional region gradient from the domatic root in zone to be welded to face of weld be one less than the angles of 30 degree.
Fixedly employing " F " the type jig 6 that present embodiment is disclosed to be reprocessed with 2 of run-on tab 3 and mother metals tightens fixing, particularly, as shown in Figure 9, " F " type of employing jig 6 is clamped in reprocesses the one side that deviates from mother metal 2 with run-on tab 3, deviate from the one side of reprocessing with run-on tab 3 with mother metal 2, realize reprocessing with the chucking of 2 of run-on tab 3 and mother metals and fix.Use the oxy-acetylene flame mode of heating to treat the welding zone territory before the welding and carry out warm-up operation, flame should be adjusted into carburizing flame in the warm, and flame should be able to move freely above the preheating zone, but should avoid directly heating to reprocess with run-on tab 3.Use the contact temperature-measuring instrument to carry out temperature survey, preheat temperature is controlled about 100 ℃, and welding process adopts multi-pass welding, and weld interpass temperature is controlled about 110 ℃.
To-be-welded region is welded.Reprocess after welding finishes, when treating that mother metal 2 is cooled to 25 ℃, remove " F " type jig 6, adopt pneumatic straight grinder milling to remove and reprocess with run-on tab 3, will reprocess with run-on tab 3 and weld seam 1 junction and polish smooth, make whole piece weld bead height unanimity.
Disclosed the reprocessing with run-on tab of present embodiment is provided with the groove that matches with weld reinforcement, make and reprocess with run-on tab and weld seam and the increase of mother metal contact area, accelerated the heat conduction between mother metal and run-on tab, improved weld seam and reprocess qualification rate, reduced and reprocess the welding generation of defects.
The utility model is not limited to described the reprocessing of above-described embodiment and uses run-on tab, and this change of reprocessing change with the run-on tab plate shape, material is all within protection domain of the present utility model.
It should be noted that at last: above each embodiment is not intended to limit only in order to the technical solution of the utility model to be described; Although have been described in detail with reference to the utility model of aforementioned each embodiment, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps some or all of technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the scope of each embodiment technical scheme of the utility model.
Claims (6)
1. reprocess and use run-on tab for one kind, it is characterized in that, comprise plate body, the one side of described plate body has the groove that matches with weld reinforcement, at least one sidewall that is worn by groove on the described plate body is domatic, and described domatic and angle plate body upper groove place face are 30-45 °.
2. use run-on tab according to described the reprocessing of claim 1, it is characterized in that, described plate body is identical with the material of welding base metal.
3. use run-on tab according to described the reprocessing of claim 1, it is characterized in that, described plate body is identical with the thickness of welding base metal.
4. use run-on tab according to described the reprocessing of claim 1, it is characterized in that, described domatic and angle plate body upper groove place face are 35-45 °.
5. use run-on tab according to described the reprocessing of claim 1, it is characterized in that, described groove is arc groove, and the opening of described arc groove is wide
Wherein t is that mother metal thickness, α are that bevel angle, b are root gap of weld, X=1～5mm.
According to claim 5 reprocess with stating run-on tab, it is characterized in that the radius of described arc groove
H is weld reinforcement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220706084 CN203109413U (en) | 2012-12-18 | 2012-12-18 | End tab for repair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220706084 CN203109413U (en) | 2012-12-18 | 2012-12-18 | End tab for repair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203109413U true CN203109413U (en) | 2013-08-07 |
Family
ID=48889789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220706084 Expired - Lifetime CN203109413U (en) | 2012-12-18 | 2012-12-18 | End tab for repair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203109413U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104959719A (en) * | 2015-07-15 | 2015-10-07 | 重庆大学 | Quick nondestructive testing method for hole defect in welding seam of fusion welding |
| CN105666066A (en) * | 2016-04-07 | 2016-06-15 | 江西省水电工程局机械厂 | Hidden-buried pressure steel pipe butt-welding seam back surface defect treatment process |
| CN107552995A (en) * | 2016-10-21 | 2018-01-09 | 南京首勤特种材料有限公司 | A kind of welding method and welding structure of titanium steel multiple tube |
| CN112605618A (en) * | 2020-12-28 | 2021-04-06 | 上海振华重工(集团)股份有限公司南通分公司 | Machining process of arc striking and extinguishing plate machine |
-
2012
- 2012-12-18 CN CN 201220706084 patent/CN203109413U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104959719A (en) * | 2015-07-15 | 2015-10-07 | 重庆大学 | Quick nondestructive testing method for hole defect in welding seam of fusion welding |
| CN105666066A (en) * | 2016-04-07 | 2016-06-15 | 江西省水电工程局机械厂 | Hidden-buried pressure steel pipe butt-welding seam back surface defect treatment process |
| CN105666066B (en) * | 2016-04-07 | 2017-10-27 | 江西省水电工程局机械厂 | A kind of dark pile things on power butt welding of steel tube seam defect on back side handling process |
| CN107552995A (en) * | 2016-10-21 | 2018-01-09 | 南京首勤特种材料有限公司 | A kind of welding method and welding structure of titanium steel multiple tube |
| CN112605618A (en) * | 2020-12-28 | 2021-04-06 | 上海振华重工(集团)股份有限公司南通分公司 | Machining process of arc striking and extinguishing plate machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 063035 Hebei province Fengrun District Tangshan City Road No. 3 factory Patentee after: CRRC TANGSHAN Co.,Ltd. Address before: 063035 Hebei province Fengrun District Tangshan City Road No. 3 factory Patentee before: TANGSHAN RAILWAY VEHICLE Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130807 |
|
| CX01 | Expiry of patent term |