CN204397178U - A kind of iron weld repair structure - Google Patents
A kind of iron weld repair structure Download PDFInfo
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- CN204397178U CN204397178U CN201420773650.5U CN201420773650U CN204397178U CN 204397178 U CN204397178 U CN 204397178U CN 201420773650 U CN201420773650 U CN 201420773650U CN 204397178 U CN204397178 U CN 204397178U
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- wedge
- infill panel
- soldering
- cast iron
- iron
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Abstract
The utility model discloses a kind of iron weld repair structure, comprises by the workpiece of soldering, described workpiece bevel, and groove face has multiple holes and is screwed into bolt; Groove sharp corner is wedge, and infill panel is superimposed upon on wedge successively, and wedge has blind hole, and infill panel has through hole; The side side openning of wedge and infill panel.The utility model improves soldering coupling stiffness between cast iron, make the overall tensile strength of weld seam high, not easy to crack, toughness and anti-fatigue performance good, be applicable to soldering cast iron, the soldering being particularly suitable for the mould cast irons such as end socket in boiler industry, tube sheet, corrugated flue, smoke chamber pipe plate connects.
Description
Technical field
The utility model relates to a kind of iron weld repair structure, and the repair welding being especially applicable to cast iron die connects.
Background technology
Easily various defect and damage is there is in cast iron in manufacture with in using.Cast iron back-welding is the important means of repairing defectiveness ironcasting.The phosphorus content of cast iron is high, and fragility is large, and weldability is very poor, in welding process, easily produce white structure and crackle.White structure is due to when cast iron back-welding, and carbon, silicon etc. promote a large amount of scaling loss of graphite element, and repair welding district cooling rate is fast, has little time to carry out producing at weld metal zone graphitizing process.Crackle usually occurs in Seam and heat effected zone, Producing reason is that the tensile strength of cast iron is low, plasticity is very poor, less than 400 DEG C basic non-plastics, and welding stress is comparatively large, and when joint exists white structure, because the shrinkage factor of white structure is larger, crackle tendency is more serious, and whole piece weld seam even can be made to strip down along melt run from mother metal.
End socket is one of strength member on Industrial Boiler equipment, generally there are flat head and ellipse head, the manufacturing process of end socket generally adopts mould to be pressed, and mould need have higher intensity, hardness, wearability, toughness and anti-fatigue performance etc., and its complex structure, machined manufacture difficulty is larger, casting mould becomes most and selects, so end socket compacting tool set generally adopts casting technique production and processing, such as casting material HT200 etc., its mechanical property is close to steel.But it is because carbon equivalent ce is greater than 0.6%, high containing S, P impurity.
The main failure forms of cast iron die generally comes from die shoe and bed die circle, and cast iron die after long-term use, can bear the effect of alternate load, if there is casting flaw in itself, can form crackle at stress raiser, serious will rupture, and finally causes scrapping of die holder.Unnecessary waste and loss will be brought.Because the weldability of cast iron is poor, postwelding often has pore, yielding, easy fracture, easily produces air chill and hardened structure, weld crack, therefore the effect of the reparation of cast iron die is poor, the carbon equivalent ce of common welding is greater than 0.6%, weld seam tensile strength sigma b≤200MPa.In boiler industry, the compacting tool set of end socket, tube sheet, corrugated flue, smoke chamber pipe plate is all the cast iron materials HT200 adopted substantially, the molding pressure of this type of mould is hundreds of ton, so require that the comprehensive comparison of mould is high, usually after the fracture of this type of mould, be all carry out scrapping process, therefore, find the repair welding structure of a kind of soldering cast iron particularly cast iron die to become urgent need.
Summary of the invention
The purpose of this utility model is, provides a kind of iron weld repair structure, and the repair welding being especially applicable to cast iron die connects.
The technical scheme that enforcement the utility model adopts comprises by the workpiece of soldering, described workpiece bevel, and groove face has multiple holes and is screwed into bolt; Groove sharp corner is wedge, and infill panel is superimposed upon on wedge successively, and wedge has blind hole, and infill panel has through hole; The side side openning of wedge and infill panel.
Further, the preferred 80-100 degree of the angle of described groove.
Further, the preferred Q245R of the material of described wedge, infill panel.
Further, the weld seam between described wedge, infill panel, through hole, blind hole, bolt is formed after preferably being welded by J507 wlding, and described wedge, weld seam between infill panel with groove are preferably welded by Z308 wlding and formed afterwards.
The beneficial effects of the utility model are, because soldering groove place adds bolt and wedge, infill panel, improve coupling stiffness between cast iron, screwed connection is had between bolt and cast iron, make the overall tensile strength sigma b >=400MPa of weld seam, not easy to crack, toughness and anti-fatigue performance good, be applicable to soldering cast iron, the soldering being particularly suitable for the mould cast irons such as end socket in boiler industry, tube sheet, corrugated flue, smoke chamber pipe plate connects.
Accompanying drawing explanation
Fig. 1 is soldering constructive embodiment schematic diagram.
Detailed description of the invention
See Fig. 1, the utility model can adopt following steps and method to implement:
Step one, end socket pig mold 1 breaking part cleans, and be heated to 100 °, bevel 2, the angle a of groove 2 is 90 degree, polishing;
Step 2, according to the size of groove 2 angle a, surperficial tapping hole 7, the filament length 20mm in silk hole 7, is screwed into 12-M10 bolt 6; Step 3, the infill panel 3 of standby 6mm thickness and wedge 9, wedge 9 has blind hole 8, and the material of infill panel 3, wedge 9 is Q245R.The width of infill panel 3 and the gradient of both sides be corresponding height and the angle a treating soldering groove 2 sequentially, and the superimposed thickness direction of infill panel 3 bores 3 φ 10 holes logical 4, the side of infill panel 3 and wedge 9 and bolt 6 corresponding position side openning 5;
Step 4, is heated to 150 ° by pig mold 1, keeps interlayer temperature 60 °, puts into wedge 9 and infill panel 3 successively.Between the through hole 4 of infill panel 3, wedge 9 and blind hole 8 thereof, infill panel 3, bolt 5, welding adopts J507 wlding, φ 3.2, electric current 100-120A, voltage 18-20V, DC reverse connection.Wedge 6, infill panel 3 adopt Z308 wlding with welding of pig mold 1, φ 3.2, electric current 100-120A, voltage 18-20V, straight polarity direct current.Interlayer temperature, also speaks approvingly of a temperature, refers to multiple-pass weld and the transient temperature of mother metal before next welding bead of welding, generally represents with peak.
Repeat step 4, the another side of bevel for welding 2 is until pig mold 1 soldering is smooth.
Weld seam carbon equivalent ce=[C+Mn/6] * 100%=0.22+0.65/6=0.32%, as carbon equivalent < 0.4%, good welding performance, weld seam tensile strength sigma b >=400MPa.
Claims (4)
1. an iron weld repair structure, comprises by the workpiece of soldering, it is characterized in that, described workpiece bevel, and groove face has multiple holes and is screwed into bolt; Groove sharp corner is wedge, and infill panel is superimposed upon on wedge successively, and wedge has blind hole, and infill panel has through hole; The side side openning of wedge and infill panel.
2. a kind of iron weld repair structure as claimed in claim 1, is characterized in that, the angle of described groove is 80-100 degree.
3. a kind of iron weld repair structure as claimed in claim 1, is characterized in that, the material of described wedge, infill panel is Q245R.
4. a kind of iron weld repair structure as claimed in claim 1, it is characterized in that, weld seam between described wedge, infill panel, through hole, blind hole, bolt is formed after being welded by J507 wlding, and described wedge, weld seam between infill panel with groove are welded by Z308 wlding and formed afterwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420773650.5U CN204397178U (en) | 2014-12-10 | 2014-12-10 | A kind of iron weld repair structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420773650.5U CN204397178U (en) | 2014-12-10 | 2014-12-10 | A kind of iron weld repair structure |
Publications (1)
| Publication Number | Publication Date |
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| CN204397178U true CN204397178U (en) | 2015-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420773650.5U Active CN204397178U (en) | 2014-12-10 | 2014-12-10 | A kind of iron weld repair structure |
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| CN (1) | CN204397178U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110977096A (en) * | 2019-11-25 | 2020-04-10 | 芜湖隆深机器人有限公司 | Welding equipment for side end steel plate and stacking welding method thereof |
| CN116372318A (en) * | 2023-05-29 | 2023-07-04 | 中潇建工集团有限公司 | Steel structure welding equipment based on intelligent construction and welding method thereof |
-
2014
- 2014-12-10 CN CN201420773650.5U patent/CN204397178U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110977096A (en) * | 2019-11-25 | 2020-04-10 | 芜湖隆深机器人有限公司 | Welding equipment for side end steel plate and stacking welding method thereof |
| CN110977096B (en) * | 2019-11-25 | 2022-05-31 | 芜湖隆深机器人有限公司 | Welding equipment for side end steel plate and stacking welding method thereof |
| CN116372318A (en) * | 2023-05-29 | 2023-07-04 | 中潇建工集团有限公司 | Steel structure welding equipment based on intelligent construction and welding method thereof |
| CN116372318B (en) * | 2023-05-29 | 2023-09-08 | 中潇建工集团有限公司 | Steel structure welding equipment based on intelligent construction and welding method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |