CN1280060C - New method of using low hydorgew sodium type welding bar to weld cast iron material - Google Patents
New method of using low hydorgew sodium type welding bar to weld cast iron material Download PDFInfo
- Publication number
- CN1280060C CN1280060C CN 03126247 CN03126247A CN1280060C CN 1280060 C CN1280060 C CN 1280060C CN 03126247 CN03126247 CN 03126247 CN 03126247 A CN03126247 A CN 03126247A CN 1280060 C CN1280060 C CN 1280060C
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- Prior art keywords
- welding
- weld
- groove
- weldering
- transition zone
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- Expired - Fee Related
Links
- 238000003466 welding Methods 0.000 title claims abstract description 72
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000000463 material Substances 0.000 title claims abstract description 13
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 title claims abstract description 9
- 239000011734 sodium Substances 0.000 title claims abstract description 9
- 229910052708 sodium Inorganic materials 0.000 title claims abstract description 9
- 229910001018 Cast iron Inorganic materials 0.000 title claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 8
- 239000001257 hydrogen Substances 0.000 claims abstract description 8
- 238000005266 casting Methods 0.000 claims abstract description 4
- 229910052742 iron Inorganic materials 0.000 claims abstract description 4
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims abstract 3
- 239000002184 metal Substances 0.000 claims description 16
- 229910052751 metal Inorganic materials 0.000 claims description 16
- 230000007704 transition Effects 0.000 claims description 14
- 239000002893 slag Substances 0.000 claims description 12
- 230000004927 fusion Effects 0.000 claims description 9
- 208000037656 Respiratory Sounds Diseases 0.000 claims description 7
- 239000011324 bead Substances 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 6
- 230000011218 segmentation Effects 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- 150000002431 hydrogen Chemical class 0.000 description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
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- Arc Welding In General (AREA)
Abstract
The present invention relates to new method for welding casting iron materials of a low hydrogen sodium electrode, which belongs to a welding technology. The present invention adopts a technical method which comprises the following steps: preparing before welding, assembling welding seams, discontinuous welding for straight electrode manipulation by sections and welding. The method has the advantages of simple use, easy operation, welding material saving, high welding quality and no fractures at welding seams after welding; the cost is reduced.
Description
One, technical field: the present invention relates to the ironcasting welding method, especially use the method for hydrogen sodium type welding rod welding cast iron material.
Two, background technology: ironcasting phosphorus content height, sulfur-bearing, phosphorus are also higher, welding point is low to cooling velocity, hot and cold intensity, basic non-plastic, when utilizing other method welding, welding fast cooling and weldment be heated inhomogeneous and form under the bigger welding stress condition, be prone to spoken parts in traditional operas, hardened structure, joint easily cracks.
Three, summary of the invention: the purpose of this invention is to provide the method for using hydrogen sodium type welding rod welding cast iron material, it has overcome the deficiency of original solder technology, the object of the present invention is achieved like this, welding procedure is: prepare before the first step weldering, to be heated to 400-500 ℃ in the 30--40mm scope of both sides, iron casting fracture place with flame, for the material with greasy dirt the greasy dirt that infiltrates between metal inside all is evaporated, until till not smoldering; Polish groove with sanding machine, bevel angle is decided according to the thickness of mother metal, and thickness is more thick, bevel angle is more big, reserves mother metal crackle root original face 2-3mm so that organize right, groove is polished to surpassing crackle two ends 3-5mm always, and removes dirt rust and foreign material in the groove both sides 10-20mm; Second step group butt welded seam must make the mother metal alignment of fracture, begins with the solid both sides, crack of low hydrogen sodium electrode point again, and the solid length 10-20mm of point adopts welding current 80A, dc reverse connection, the welding of fast weldering speed; The 3rd step was adopted straight line arc manipulation segmentation discontinuous welding during backing welding, certain through welding, general each fusion length 30-40mm, whenever be soldered one section should be immediately with the quick hammering weld seam of the slag hammer of tip and remove slag; After being soldered together, treat work-piece cools to 50-60 ℃, weld again a lower seam, the like; The temperature of heat affected area is controlled at segmentation weldering in 300 ℃ all the time, after being soldered, grinds the gentle slope groove at every section weld seam two ends with sanding machine; After bottoming is complete, remove welding slag, hammer into shape with the tip slag and touch around the weld seam; The 4th step was filled weldering, welded transition zone in the groove both sides, and electric current is 80A, adopted the fast straight line manipulation of electrode welding of fast weldering; Be soldered groove one side transition zone, weld again the transition zone of groove opposite side; When treating that temperature is down to below 300 ℃, the lack of fusion place is carried out repair welding, until weld middle connection welding bead after welding the good transition zone of fusion, this moment, the transition zone welding current can suitably increase again, but continuous sequence, but the welding method of middle connection welding bead is the same with backing welding with electric current; The welding method of capping layer is identical with the method for filling weldering, and the weld reinforcement that exceeds mother metal grinds off with sanding machine, and weld reinforcement is zero.
The method is simple and easy to do; Save wlding, reduce cost; The welding quality height after the welding, can not rupture in the commissure.
Four, description of drawings: Fig. 1 is a mother metal crackle root original graph schematic diagram.
Fig. 2 is welding sequence figure
Five, the specific embodiment: welding procedure is: prepare before the first step weldering, to be heated to 400-500 ℃ in the 30-40mm scope of both sides, iron casting fracture place with flame, for the material with greasy dirt the greasy dirt that infiltrates between metal inside all is evaporated, until till not smoldering; Polish groove with sanding machine, bevel angle is decided according to the thickness of mother metal, and thickness is more thick, bevel angle is more big, reserves mother metal crackle root original face 2-3mm so that organize right, groove is polished to surpassing crackle two ends 3-5mm always, and removes dirt rust and foreign material in the groove both sides 10-20mm; Second step group butt welded seam must make the mother metal alignment of fracture, begins with the solid both sides, crack of low hydrogen sodium electrode point again, and the solid length 10-20mm of point adopts welding current 80A, dc reverse connection, the welding of fast weldering speed; The 3rd step was adopted straight line arc manipulation segmentation discontinuous welding during backing welding, certain through welding, general each fusion length 30-40mm, whenever be soldered one section should be immediately with the quick hammering weld seam of the slag hammer of tip and remove slag; After being soldered together, treat work-piece cools to 50-60 ℃, weld again a lower seam, the like; The temperature of heat affected area is controlled at segmentation weldering in 300 ℃ all the time, after being soldered, grinds the gentle slope groove at every section weld seam two ends with sanding machine; After bottoming is complete, remove welding slag, hammer into shape with the tip slag and touch around the weld seam; The 4th step was filled weldering, welded transition zone in the groove both sides, and electric current is 80A, adopted the fast straight line manipulation of electrode welding of fast weldering; Be soldered groove one side transition zone, weld again the transition zone of groove opposite side; When treating that temperature is down to below 300 ℃, the lack of fusion place is carried out repair welding, until weld middle connection welding bead after welding the good transition zone of fusion, this moment, the transition zone welding current can suitably increase again, but continuous sequence, but the welding method of middle connection welding bead is the same with backing welding with electric current; The welding method of capping layer is identical with the method for filling weldering, and the weld reinforcement that exceeds mother metal grinds off with sanding machine, and weld reinforcement is zero.
Claims (1)
1, uses the method for low hydrogen sodium electrode welding cast iron spare material, it is characterized in that: prepare before the first step weldering, to be heated to 400-500 ℃ in the 30-40mm scope of both sides, iron casting fracture place with flame, for the material with greasy dirt the greasy dirt that infiltrates between metal inside all is evaporated, until till not smoldering; Polish groove with sanding machine, bevel angle is decided according to the thickness of mother metal, thickness is more thick, bevel angle is more big, reserve mother metal crackle root original face 2-3mm, so that organize right, groove is polished to surpassing crackle two ends 3-5mm always, and dirt rust and foreign material in the removing groove both sides 10-20mm: second step group butt welded seam, must make the mother metal alignment of fracture, begin again with the solid both sides, crack of low hydrogen sodium electrode point, the solid length 10-20mm of point, adopt welding current 80A, dc reverse connection, the welding of fast weldering speed; The 3rd step was adopted straight line arc manipulation segmentation discontinuous welding during backing welding, certain through welding, each fusion length 30-40mm, whenever be soldered one section should be immediately with the quick hammering weld seam of the slag hammer of tip and remove slag; After being soldered together, treat work-piece cools to 50-60 ℃, weld again a lower seam, the like: the temperature of heat affected area is controlled at segmentation weldering in 300 ℃ all the time, after being soldered, grinds the gentle slope groove at every section weld seam two ends with sanding machine; After bottoming is complete, remove welding slag, hammer into shape with the tip slag and touch around the weld seam; The 4th step was filled weldering, welded transition zone in the groove both sides, and electric current is 80A, adopted the fast straight line manipulation of electrode welding of fast weldering: be soldered groove one side transition zone, weld the transition zone of groove opposite side again; When treating that temperature is down to below 300 ℃, the lack of fusion place is carried out repair welding, until weld again middle connection welding bead after welding the good transition zone of fusion, but the welding method of middle connection welding bead is the same with backing welding with electric current: the welding method of capping layer is identical with the method for filling weldering, the weld reinforcement that exceeds mother metal grinds off with sanding machine, and weld reinforcement is zero.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03126247 CN1280060C (en) | 2003-07-09 | 2003-07-09 | New method of using low hydorgew sodium type welding bar to weld cast iron material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03126247 CN1280060C (en) | 2003-07-09 | 2003-07-09 | New method of using low hydorgew sodium type welding bar to weld cast iron material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1513638A CN1513638A (en) | 2004-07-21 |
| CN1280060C true CN1280060C (en) | 2006-10-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03126247 Expired - Fee Related CN1280060C (en) | 2003-07-09 | 2003-07-09 | New method of using low hydorgew sodium type welding bar to weld cast iron material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1280060C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2882533B1 (en) * | 2005-02-25 | 2007-07-06 | Snecma Moteurs Sa | PROCESS FOR REPAIRING MONOBLOC AUBING DISK, BEGINNING AND END OF COUNTRYSIDE TEST |
| CN101934434B (en) * | 2010-09-26 | 2012-10-03 | 大庆市锐虹机械制造有限公司 | Cast iron hot repair welding process and device |
| CN110977098B (en) * | 2019-12-12 | 2021-05-04 | 中国石油天然气第一建设有限公司 | Welding operation method for transition layer and multiple layer of composite steel plate |
| CN114571028A (en) * | 2022-03-25 | 2022-06-03 | 国家能源集团宁夏煤业有限责任公司 | Gas welding method for grey cast iron plate |
| CN116117269A (en) * | 2022-09-28 | 2023-05-16 | 陕西飞机工业有限责任公司 | Layered welding method for aviation support component |
-
2003
- 2003-07-09 CN CN 03126247 patent/CN1280060C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1513638A (en) | 2004-07-21 |
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