CN2912893Y - One-side welding ceramic welding backing - Google Patents
One-side welding ceramic welding backing Download PDFInfo
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- CN2912893Y CN2912893Y CN 200620096263 CN200620096263U CN2912893Y CN 2912893 Y CN2912893 Y CN 2912893Y CN 200620096263 CN200620096263 CN 200620096263 CN 200620096263 U CN200620096263 U CN 200620096263U CN 2912893 Y CN2912893 Y CN 2912893Y
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Abstract
The utility model discloses a one-side welding ceramic cushion which includes a ceramic cushion block. Wherein, the top of the ceramic cushion block is provided with a weld forming trough, the bottom of which takes the shape of a plane and the section of the weld forming trough presents one of the inverted-trapezoid, rectangle or elliptic transition corniform. The cushion radically solves all problems of the arc-plane forming trough ceramic welding cushion; on one hand, the slag storage space on the edge of the welding seam is enlarged and the defect of the undercut is avoided, and on the other hand, the thermal shock of the electric arc energy density Gaussian distribution tip is withstood, the heat is dispersed, the back welding seam forming is full and uniform and the ridge can not be formed. Meanwhile, the flat welding forming trough is not sensitive to the assembly clearance and the centering position of the groove of the welding component and has the advantages of wide applicability and the ensured quality of the welding forming and so on.
Description
Technical field
The utility model relates to the welding backing of the auxiliary good moulding of weld seam, refers to a kind of single welding ceramic welding backing particularly.
Background technology
Ceramic backing welding be a kind of with special ceramic material be supports, make weld seam force moulding efficiently, high-quality, low-cost welding method.This welding method has been avoided the operation in back chipping, overhead welding and the narrow enclosed environment, has alleviated welder's labour intensity, and welding production efficiency is significantly improved, and welding quality is effectively ensured.One of key factor that guarantees the back of weld Forming Quality is the forming tank of ceramic welding backing.In existing ceramic welding backing, its forming tank design mostly is concaved circular cambered surface shape, and people generally believe to have only this arc surface forming tank of employing, could form the weld seam of arc surface shape.But, the scientific research personnel finds that this arc surface forming tank is easy to generate following problem: one in the actual welding process, space between arc surface forming tank and the welded unit groove tip is comparatively narrow and small, and storage slag ability is very limited, and slag is easy to clamp-on weld edge and causes the undercut phenomenon; Its two, arc surface forming tank bottom lowest part is corresponding with arc energy density Gaussian distribution tip, makes the thermal shock maximum that the arc surface bosom produces, the fusion penetration maximum of generation, formation finger-like fusion penetration, sealing run forms back easily; Its three, the arc surface forming tank is relatively responsive to fit-up gap, centering position and welding conditions, is slightly offset to cause appearance of weld mass defect.If strengthen the degree of depth of arc surface forming tank, weld reinforcement also can correspondingly increase, though weld seam is full, has not also had the undercut phenomenon, and reinforcement is too big, does not also meet welding requirements.In order to obtain the little weld seam effect of reinforcement, people often take less arc surface forming tank, but the more little weldquality problem that causes of forming tank is also serious more.
Summary of the invention
The purpose of this utility model is fundamentally to solve the existing existing variety of issue of arc surface forming tank ceramic welding backing, a kind of wide adaptability is provided, can guarantees the single welding ceramic welding backing of appearance of weld quality.
For realizing this purpose, the single welding ceramic welding backing that the utility model proposed comprises the ceramic backing piece, and design has the bottom to be plane appearance of weld groove on the end face of described ceramic backing piece.The cross sectional shape of described appearance of weld groove can be a kind of in trapezoidal, rectangle or the oval transition dihedral, and the flat forming tank of these several cross sectional shapes is simple and practical, easy to make.
Described appearance of weld groove is the key factor that influences back of weld compact dimensions and quality, and it has two key characterization parameter: groove width a and groove depth b.Generally speaking, groove width a determines that according to the fit-up gap of welded unit groove depth b then requires to determine according to the reinforcement of weld seam.When groove width a=5mm～30mm, groove depth b=0.1mm～3.5mm, can contain the welded unit of general all dimensional parameters basically.Do not wish that generally weld reinforcement is excessive, therefore not under the king-sized situation in the fit-up gap of welded unit, for example under the situation of fit-up gap≤12mm, groove width a=6mm～15mm, groove depth b=0.4mm～1.5mm can satisfy the moulding requirement of most weld seams at this moment.In the fit-up gap of welding process requirement is under the situation of 5mm～8mm, if groove width a=9mm～14mm, groove depth b=0.5mm～1.3mm, will obtain that weld reinforcement is moderate, toe of weld transition slyness, the full uniform desirable appearance of weld of weld seam.
Advantage of the present utility model is: the designed appearance of weld groove that is flat shape, and one side has strengthened the storage slag space of weld edge, has effectively avoided the undercut generation of defects; Kept out the thermal shock at arc energy density Gaussian distribution tip on the other hand, made spread heat, the sealing run moulding is full evenly, can not form back.Simultaneously, the appearance of weld groove of flat shape is all insensitive to the fit-up gap and the centering position of welded unit groove, can make the welding conditions adaptability of liner wider, and these all are that traditional round cambered surface forming tank institute is inaccessible.
Description of drawings
Fig. 1 is a kind of sectional structure schematic diagram of single welding ceramic welding backing;
Fig. 2 is the sectional structure schematic diagram of another kind of single welding ceramic welding backing;
Fig. 3 is the sectional structure schematic diagram of the third single welding ceramic welding backing;
Fig. 4 is the sectional structure schematic diagram of traditional single welding ceramic welding backing;
Fig. 5 is the use confined state schematic diagram of various single welding ceramic welding backings;
Fig. 6 is for using the formed full weld seam view of the utility model liner;
Fig. 7 is for using the undercut moulding weld seam view that conventional cushion produced;
Fig. 8 is for using the not full moulding weld seam view that conventional cushion produced;
Fig. 9 is for using the back moulding weld seam view that conventional cushion produced;
Figure 10 is for using the big reinforcement moulding weld seam view that conventional cushion produced;
Specific embodiment
Below in conjunction with embodiment, comparative example and accompanying drawing the utility model is described in further detail:
Embodiment 1: the utility model ceramic welding backing as shown in Figure 1, comprise ceramic backing piece 1, and the bottom surface of ceramic backing piece 1 is provided with the parallel centering groove 3 of twice, can make ceramic backing piece 1 aim at the center, fit-up gap of welded unit quickly and easily.The item face of ceramic backing piece 1 is provided with shape appearance of weld groove 2 at the bottom of the plane, and the cross section of appearance of weld groove 2 is trapezoidal, its groove width a=13mm, groove depth b=1.3mm.
Embodiment 2: the utility model ceramic welding backing as shown in Figure 2, comprise ceramic backing piece 1, and the bottom surface of ceramic backing piece 1 is provided with the parallel centering groove 3 of twice.The end face of ceramic backing piece 1 is provided with shape appearance of weld groove 2 at the bottom of the plane, and the cross section of appearance of weld groove 2 is rectangular, its groove width a=12mm, groove depth b=0.5mm.
Embodiment 3: the utility model ceramic welding backing as shown in Figure 3, comprise ceramic backing piece 1, and the bottom surface of ceramic backing piece 1 is provided with the parallel centering groove 3 of twice.The end face of ceramic backing piece 1 is provided with shape appearance of weld groove 2 at the bottom of the plane, and the cross section of appearance of weld groove 2 is oval transition dihedral, and promptly two of forming tank corners are oval transition angle, its groove width a=15mm, groove depth b=1.0mm.
Comparative example 1: traditional ceramic welding backing as shown in Figure 4, comprise ceramic backing piece 1, the bottom surface of ceramic backing piece 1 is provided with a centering groove 3.The end face of ceramic backing piece 1 is provided with the appearance of weld groove 2 that is arc surface shape, its groove width a=12mm, groove depth b=1.2mm.
Comparative example 2: traditional ceramic welding backing as shown in Figure 4, comprise ceramic backing piece 1, the bottom surface of ceramic backing piece 1 is provided with a centering groove 3.The end face of ceramic backing piece 1 is provided with the appearance of weld groove 2 that is arc surface shape, its groove width a=8mm, groove depth b=0.5mm.
Comparative example 3: traditional ceramic welding backing as shown in Figure 4, comprise ceramic backing piece 1, the bottom surface of ceramic backing piece 1 is provided with a centering groove 3.The end face of ceramic backing piece 1 is provided with the appearance of weld groove 2 that is arc surface shape, its groove width a=15mm, groove depth b=1.6mm.
Respectively ceramic backing piece in the foregoing description and the comparative example 1 and aluminium foil pressure sensitive adhesive 5 are pasted together, aluminium foil pressure sensitive adhesive 5 are pasted together with ceramic backing piece 1 carry out soldering test on the welded unit 4 again, confined state as shown in Figure 5, experiment condition is as follows:
Test steel plate: thickness of slab 12mm, mild steel;
Groove shape: V-butt, 50 °～60 ° of angles;
Welding method: semi-automatic CO
2Gas shielded arc welding;
Welding material: Ф 1.2mm flux-cored wire;
Welding conditions: 170A * 24V; 210A * 27V; 250A * 29V;
Fit-up gap: 4mm; 8mm; 12mm.
The experiment results is shown in following table one:
Table one:
| Test | The gap | 180A 24V | 210A 27V | 240A 29V |
| Embodiment 1 | 4mm | ⊙ | ⊙ | ⊙ |
| 8mm | ⊙ | ⊙ | ⊙ | |
| 12mm | ⊙ | ⊙ | ⊙ | |
| Comparative example 1 | 4mm | ○ | + | + |
| 8mm | ○ | ⊙ | ○ | |
| 12mm | ⊙ | ⊙ | ⊙ | |
| Embodiment 2 | 4mm | ⊙ | ⊙ | ⊙ |
| 8mm | ⊙ | ⊙ | ⊙ | |
| 12mm | ⊙ | ⊙ | ⊙ | |
| Comparative example 2 | 4mm | + | + | + |
| 8mm | ○ | ⊙ | ○ | |
| 12mm | × | × | × | |
| Embodiment 3 | 4mm | ⊙ | ⊙ | ⊙ |
| 8mm | ⊙ | ⊙ | ⊙ | |
| 12mm | ⊙ | ⊙ | ⊙ | |
| Comparative example 3 | 4mm | ● | ● | ● |
| 8mm | ● | ● | ● | |
| 12mm | ● | ● | ● |
The meaning of each symbol: ⊙ represents that appearance of weld is full evenly in the table one; Zero expression appearance of weld is not full; + expression back is shaped; * expression has undercut; ● the expression weld reinforcement is bigger than normal.
By table one as can be seen:
No matter the utility model embodiment 1～3 under the situation of large, medium and small specification, standard and different weld gaps, all can obtain good appearance of weld.As shown in Figure 6, the reinforcement of weld seam 6 is subjected to the ideal control of the groove depth b of appearance of weld groove 2, and moulding is full evenly, can not produce the phenomenon of undercut.
And comparative example 1～3 employing is traditional arc surface forming tank, accommodation to gap and welding conditions is very narrow, not full problem as shown in Figure 8 appears easily in the moulding of weld seam 6, can produce when serious as shown in Figure 9 back and defectives such as undercut as shown in Figure 7.For the bigger great circle cambered surface forming tank of the degree of depth, the also corresponding as shown in figure 10 increase of the reinforcement of its weld seam 6 more can not be satisfied the standard requirement of welding.
In sum, the flat forming tank that the utility model proposed is a kind of very good design, compares with traditional arc surface forming tank to have obvious superiority, can replace fully, to realize perfect appearance of weld.It needs to be noted in addition: people often think that trapezoidal, rectangle and oval transition dihedral forming tank can produce the weld seam with its respective shapes, and this assumes as a matter of course, and in fact these three kinds of forming tank all can realize desirable arc transition weld seam as shown in Figure 6.Be also noted that in the test that under the very little situation of welding conditions as 150 amperes in electric current, 23 volts of voltages, the utility model embodiment 1～3 still can obtain good appearance of weld quality; And traditional arc surface forming tank, only under the suitable situation of groove depth size Control, the appearance of weld quality is just more satisfactory.Therefore, the welding conditions scope that traditional arc surface forming tank adapts to is little, and the flat forming tank that the utility model proposes can satisfy the welding requirements of various standards.
Claims (6)
1. single welding ceramic welding backing, comprise ceramic backing piece (1), it is characterized in that: the end face of described ceramic backing piece (1) is provided with the bottom and is plane appearance of weld groove (2), groove width a=5mm～30mm, the groove depth b=0.1mm～3.5mm of described appearance of weld groove (2).
2. single welding ceramic welding backing according to claim 1 is characterized in that: groove width a=6mm～15mm, the groove depth b=0.4mm～1.5mm of said appearance of weld groove (2).
3. single welding ceramic welding backing according to claim 1 is characterized in that: groove width a=9mm～14mm, the groove depth b=0.5mm～1.3mm of said appearance of weld groove (2).
4. according to claim 1 or 2 or 3 described single welding ceramic welding backings, it is characterized in that: a kind of in trapezoidal, rectangle or the oval transition dihedral of the cross sectional shape of said appearance of weld groove (2).
5. according to claim 1 or 2 or 3 described single welding ceramic welding backings, it is characterized in that: the bottom surface of said ceramic backing piece (1) is provided with the parallel centering grooves of twice (3).
6. single welding ceramic welding backing according to claim 4 is characterized in that: the bottom surface of said ceramic backing piece (1) is provided with the parallel centering grooves of twice (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620096263 CN2912893Y (en) | 2006-04-20 | 2006-04-20 | One-side welding ceramic welding backing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620096263 CN2912893Y (en) | 2006-04-20 | 2006-04-20 | One-side welding ceramic welding backing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2912893Y true CN2912893Y (en) | 2007-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620096263 Expired - Lifetime CN2912893Y (en) | 2006-04-20 | 2006-04-20 | One-side welding ceramic welding backing |
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| CN (1) | CN2912893Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106944724A (en) * | 2017-05-09 | 2017-07-14 | 中建钢构有限公司 | Unclear welding method of submerged-arc welding full penetration |
| CN113210797A (en) * | 2021-05-10 | 2021-08-06 | 芜湖造船厂有限公司 | Ship plate and member welding process method |
| CN114799406A (en) * | 2022-05-07 | 2022-07-29 | 广船国际有限公司 | Welding method of plate for ship |
-
2006
- 2006-04-20 CN CN 200620096263 patent/CN2912893Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106944724A (en) * | 2017-05-09 | 2017-07-14 | 中建钢构有限公司 | Unclear welding method of submerged-arc welding full penetration |
| CN113210797A (en) * | 2021-05-10 | 2021-08-06 | 芜湖造船厂有限公司 | Ship plate and member welding process method |
| CN114799406A (en) * | 2022-05-07 | 2022-07-29 | 广船国际有限公司 | Welding method of plate for ship |
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| 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: 430056 Hubei city of Wuhan province Wuhan economic and Technological Development Zone Technology Road Sky Industrial Park Patentee after: Wuhan Tiangao Welding Co., Ltd. Address before: 430056 Hubei city of Wuhan province Wuhan economic and Technological Development Zone Technology Road Sky Industrial Park Patentee before: Wuhan Tiangao Welding Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20070620 |
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| EXPY | Termination of patent right or utility model |