CN104985280A - Welding procedure method for ore pulp pipe to slip mass, collapse body and earthquake fault zone - Google Patents
Welding procedure method for ore pulp pipe to slip mass, collapse body and earthquake fault zone Download PDFInfo
- Publication number
- CN104985280A CN104985280A CN201510336649.5A CN201510336649A CN104985280A CN 104985280 A CN104985280 A CN 104985280A CN 201510336649 A CN201510336649 A CN 201510336649A CN 104985280 A CN104985280 A CN 104985280A
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- Prior art keywords
- welding
- ore slurry
- slurry pipeline
- fault zone
- slip mass
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- Pending
Links
- 238000003466 welding Methods 0.000 title claims abstract description 81
- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000004140 cleaning Methods 0.000 claims abstract description 13
- 239000002002 slurry Substances 0.000 claims description 33
- 239000011324 bead Substances 0.000 claims description 12
- 238000012360 testing method Methods 0.000 claims description 12
- 239000002893 slag Substances 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 230000007547 defect Effects 0.000 claims description 6
- 238000004321 preservation Methods 0.000 claims description 6
- 208000037656 Respiratory Sounds Diseases 0.000 claims description 5
- 230000004927 fusion Effects 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 5
- 238000009659 non-destructive testing Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 3
- 239000000428 dust Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- 239000002932 luster Substances 0.000 claims description 3
- 229910000679 solder Inorganic materials 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 229920002678 cellulose Polymers 0.000 description 3
- 239000001913 cellulose Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Classifications
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/0026—Arc welding or cutting specially adapted for particular articles or work
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/235—Preliminary treatment
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention relates to a method of a welding process of an ore pulp pipe to a slip mass, a collapse body and an earthquake fault zone, and belongs to the technical field of ore pulp conveying engineering construction. According to the method, a V-shaped groove is adopted, and the welding operation includes the steps of before-welding cleaning, before-welding preheating, root welding, hot welding, filling and face covering; and before-welding cleaning, before-welding preheating, root welding, hot welding, filling and face covering are operated on site in sequence. The method solves the problems of welding and application of the ore pulp pipe to the slip mass, the collapse body and the earthquake fault zone, welding is stable, damage is not prone to occurrence, the maintaining and repairing cost of the pipe is reduced, and the good benefit is obtained.
Description
Technical field
The present invention relates to the welding technique of ore slurry pipeline at slip mass, landslide body, Earthquake Fault Zone, belong to pulp conveying Construction Technology field.
Background technology
Cemented filling is the fifth-largest means of transportation after, air transportation defeated continue railway transportation, highway transportation, extra large land transportation, and Cemented filling is no pollution, low energy consumption not only, and is almost do not destroy ecological environment.For some road traffic inconveniences, the transport that material is easily shed or easily leaked, embodies the advantage of Cemented filling especially.So in recent years, Cemented filling industry development is very rapid, and especially utilization Cemented filling ore pulp is a kind of means of transportation of emerging development in recent years.
But physical features mostly is high and steep mountains residing for iron ore concentrate, the environment that lays of ore slurry pipeline seems particularly complicated, may go through the Special zone such as wetland marsh, ponding coal seam, slip mass, landslide body, Earthquake Fault Zone, mountain valley, coombe, ridge.Therefore, the welding of ore slurry pipeline is also just seemed important.For this, the present invention discloses a kind of ore slurry pipeline in slip mass, landslide body, the welding procedure of Earthquake Fault Zone and method, to ensure that pipeline also can be transported safely in slip mass, landslide body, Earthquake Fault Zone location.
Summary of the invention
The invention provides the welding technique of ore slurry pipeline at slip mass, landslide body, Earthquake Fault Zone, for solving ore pulp pipeline welding circumstance complication, problem of not easily welding in pipeline transportation process, for ore slurry pipeline to provide in slip mass, landslide body, Earthquake Fault Zone location a kind of newly, effectively, welding technique easily, to ensure that pipeline also can be transported safely in slip mass, landslide body, Earthquake Fault Zone location.
At the welding technique of slip mass, landslide body, Earthquake Fault Zone, ore slurry pipeline of the present invention is achieved in that described method adopts double V-groove, bevel angle is within the scope of 55 °-60 °, and the concrete steps of described process are as follows:
1), preweld cleaning: the rust within the scope of both sides 20mm inside and outside the groove of ore slurry pipeline before welding and dirt are cleaned out, exposes metallic luster; Described dirt comprises greasy dirt, dust, slag bits;
2), weld preheating: adopt flame heating, preheating 100 DEG C within the scope of each 50mm in groove both sides of ore slurry pipeline; Cellulose-Congo red medium adopts AWSE6010 type wlding, and dry Cellulose-Congo red medium AWSE6010 before weldering, temperature is 70-80 DEG C, puts into heat-preservation cylinder after welding rod drying, ready access upon use during welding;
3), root bead: the downward root bead of Cellulose-Congo red medium AWSE6010 is adopted to the ore slurry pipeline groove after cleaning and preheating;
4), then hot weld, filling, capping: adopt the semi-automatic down hill welding welding of flux-cored wire self-shield, first carry out hot weld, then carry out filling weldering, finally carry out capping until solder side is smooth; Described flux-cored wire selects HOBART 81N1.
Described process can also comprise Welding Testing;
5), Welding Testing: adopt ultrasonic wave and radiographic inspection Non-Destructive Testing to check face of weld whether to have the defect of crackle, incomplete fusion, slag inclusion to the groove of welding, if had, then carry out repeating preweld cleaning, weld preheating, root bead, hot weld, filling, capping.
The steel matter that described ore slurry pipeline relates to is API5L X60.
The insulation duration of described heat-preservation cylinder is more than 0.5 hour, and making when welding can undrawn fiber element type welding rod very easily, and the external environment for circumstance complication has saved weld interval and welding effect is good.
Location points for attention are welded in the present invention:
(1) welding equipment related to adopts and is easy to the welding machine that job site is moved, sole mass is little, such as, can adopt MPS500 contravariant multifunctional arc welder;
(2) welding material adopts cellulose type electrode and flux-cored wire to weld;
(3) right size is processed and organized to bevel for welding as far as possible accurately, adopts double V-groove, bevel angle 55 ° to 60 °;
(4) welding parameter is arranged in detail for ore slurry pipeline steel matter chemical composition, mechanical characteristic and welding material;
Such as: the chemical composition of the steel matter API5L X60 that the ore slurry pipeline of employing relates to and percentage by weight are: C:0.084, Si:0.144, Mn:1.3, P:0.020, S:0.0038, Ni<0.010, V<0.010, Cu:0.010; Described mechanical property is: yield strength: 490MPa, tensile strength: 565, elongation after fracture: 44%, cold bending test: d=2a, 180 (face is curved, carries on the back curved): qualified, impact absorbing energy: 180J (0 DEG C), hardness: 176HV.
So according to described steel matter chemical composition and mechanical property, welding material adopts cellulose type electrode and flux-cored wire to weld; Cellulose-Congo red medium selects HOBART Pro60 (AWSE6010), core diameter 3.2mm; Flux-cored wire selects HOBART 81N1 (AWSE71T8-Ni1J), gage of wire 2.0mm.
The invention has the beneficial effects as follows: the invention provides a kind of new method for welding pipeline, solve Welding Problems and application that ore slurry pipeline lays in slip mass, landslide body, Earthquake Fault Zone location, and it is not welding is firm, fragile, reduce maintenance and the maintenance cost of pipeline.
Accompanying drawing explanation
Fig. 1 is groove type of the present invention, size and weld layer road.
Detailed description of the invention
Embodiment 1: as shown in Figure 1, ore slurry pipeline is at the welding technique of slip mass, landslide body, Earthquake Fault Zone, described method adopts double V-groove, bevel angle is at 55 °, in Fig. 1, label " 1 " is root bead, and " 2 " are hot weld, and " 3 " are for filling weldering, " 4 " are cosmetic welding, " 5 " are pipeline wall thickness, and a is bevel angle, and " 2 ± 0.5 " are the internal diameter of cylindrical hole below double V-groove, 2 ± 0.5mm, " 1.5 ± 0.5 " for the post holes of cylindrical hole below double V-groove high, 1.5 ± 0.5mm, the concrete steps of described process are as follows:
1), preweld cleaning: the rust within the scope of both sides 20mm inside and outside the groove of ore slurry pipeline before welding and dirt are cleaned out, exposes metallic luster; Described dirt comprises greasy dirt, dust, slag bits;
2), weld preheating: adopt flame heating, preheating 100 DEG C within the scope of each 50mm in groove both sides of ore slurry pipeline; Cellulose-Congo red medium adopts AWSE6010 type wlding, and dry Cellulose-Congo red medium AWSE6010 before weldering, temperature is 70 DEG C, puts into heat-preservation cylinder after welding rod drying, ready access upon use during welding;
3), root bead: the downward root bead of Cellulose-Congo red medium AWSE6010 is adopted to the ore slurry pipeline groove after cleaning and preheating;
4), then hot weld, filling, capping: adopt the semi-automatic down hill welding welding of flux-cored wire self-shield, first carry out hot weld, then carry out filling weldering, finally carry out capping until solder side is smooth; Described flux-cored wire selects HOBART 81N1.
The steel matter that described ore slurry pipeline relates to is API5L X60, pipeline wall thickness 12.7mm, and its chemical composition and mechanical property are in shown in table 1, table 2;
Table 1 API5L X60 chemical composition (%)
Table 2 API5L X60 mechanical property
According to described steel matter chemical composition and mechanical property, welding material adopts cellulose type electrode and flux-cored wire to weld; Cellulose-Congo red medium selects HOBART Pro60 (AWSE6010), core diameter 3.2mm; Flux-cored wire selects HOBART81N1 (AWSE71T8-Ni1J), gage of wire 2.0mm.
Welding equipment adopts and is easy to the MPS500 contravariant multifunctional arc welder that job site is moved, sole mass is little.
The choose reasonable of welding parameter directly affects the shaping of weld seam, if select inapplicable parameter, easily causes weld defect, and according to testing new process, the concrete welding parameter of each layer arranges in table 3:
Table 3 welding parameter
The insulation duration of described heat-preservation cylinder is more than 0.5 hour.
Embodiment 2: as shown in Figure 1, ore slurry pipeline is at the welding technique of slip mass, landslide body, Earthquake Fault Zone, and the bevel angle of the double V-groove adopted in described method is 60 °, and all the other are identical with embodiment 1, wherein dry Cellulose-Congo red medium AWSE6010 before weldering, temperature is 80 DEG C.
Embodiment 3: as shown in Figure 1, ore slurry pipeline is at the welding technique of slip mass, landslide body, Earthquake Fault Zone, and the bevel angle of the double V-groove adopted in described method is 56 °, and all the other are identical with embodiment 1, wherein dry Cellulose-Congo red medium AWSE6010 before weldering, temperature is 76 DEG C.
Embodiment 4: as shown in Figure 1, ore slurry pipeline is at the welding technique of slip mass, landslide body, Earthquake Fault Zone, and described method is identical with embodiment 1, and wherein said method also comprises Welding Testing;
Welding Testing: adopt ultrasonic wave and radiographic inspection Non-Destructive Testing to check face of weld whether to have the defect of crackle, incomplete fusion, slag inclusion to the groove of welding, if had, then carry out repeating preweld cleaning, weld preheating, root bead, hot weld, filling, capping.
Embodiment 5: as shown in Figure 1, ore slurry pipeline is at the welding technique of slip mass, landslide body, Earthquake Fault Zone, and described method is identical with embodiment 2, and wherein said method also comprises Welding Testing;
Welding Testing: adopt ultrasonic wave and radiographic inspection Non-Destructive Testing to check face of weld whether to have the defect of crackle, incomplete fusion, slag inclusion to the groove of welding, if had, then carry out repeating preweld cleaning, weld preheating, root bead, hot weld, filling, capping.
Embodiment 6: as shown in Figure 1, ore slurry pipeline is at the welding technique of slip mass, landslide body, Earthquake Fault Zone, and described method is identical with embodiment 3, and wherein said method also comprises Welding Testing;
Welding Testing: adopt ultrasonic wave and radiographic inspection Non-Destructive Testing to check face of weld whether to have the defect of crackle, incomplete fusion, slag inclusion to the groove of welding, if had, then carry out repeating preweld cleaning, weld preheating, root bead, hot weld, filling, capping.
By reference to the accompanying drawings the specific embodiment of the present invention is explained in detail above, but the present invention is not limited to above-mentioned embodiment, in the ken that those of ordinary skill in the art possess, various change can also be made under the prerequisite not departing from present inventive concept.
Claims (4)
1. ore slurry pipeline is at the welding technique of slip mass, landslide body, Earthquake Fault Zone, it is characterized in that: described method adopts double V-groove, and bevel angle is within the scope of 55 °-60 °, and the concrete steps of described process are as follows:
1), preweld cleaning: the rust within the scope of both sides 20mm inside and outside the groove of ore slurry pipeline before welding and dirt are cleaned out, exposes metallic luster; Described dirt comprises greasy dirt, dust, slag bits;
2), weld preheating: adopt flame heating, preheating 100 DEG C within the scope of each 50mm in groove both sides of ore slurry pipeline; Cellulose-Congo red medium adopts AWSE6010 type wlding, and dry Cellulose-Congo red medium AWSE6010 before weldering, temperature is 70-80 DEG C, puts into heat-preservation cylinder after welding rod drying, ready access upon use during welding;
3), root bead: the downward root bead of Cellulose-Congo red medium AWSE6010 is adopted to the ore slurry pipeline groove after cleaning and preheating;
4), then hot weld, filling, capping: adopt the semi-automatic down hill welding welding of flux-cored wire self-shield, first carry out hot weld, then carry out filling weldering, finally carry out capping until solder side is smooth; Described flux-cored wire selects HOBART 81N1.
2. ore slurry pipeline according to claim 1 is at the welding technique of slip mass, landslide body, Earthquake Fault Zone, it is characterized in that: described process also comprises Welding Testing;
Welding Testing: adopt ultrasonic wave and radiographic inspection Non-Destructive Testing to check face of weld whether to have the defect of crackle, incomplete fusion, slag inclusion to the groove of welding, if had, then carry out repeating preweld cleaning, weld preheating, root bead, hot weld, filling, capping.
3. ore slurry pipeline according to claim 1 is at the welding technique of slip mass, landslide body, Earthquake Fault Zone, it is characterized in that: the steel matter that described ore slurry pipeline relates to is API5L X60.
4. ore slurry pipeline according to claim 1 is at the welding technique of slip mass, landslide body, Earthquake Fault Zone, it is characterized in that: the insulation duration of described heat-preservation cylinder is more than 0.5 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510336649.5A CN104985280A (en) | 2015-06-17 | 2015-06-17 | Welding procedure method for ore pulp pipe to slip mass, collapse body and earthquake fault zone |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510336649.5A CN104985280A (en) | 2015-06-17 | 2015-06-17 | Welding procedure method for ore pulp pipe to slip mass, collapse body and earthquake fault zone |
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| CN104985280A true CN104985280A (en) | 2015-10-21 |
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| CN201510336649.5A Pending CN104985280A (en) | 2015-06-17 | 2015-06-17 | Welding procedure method for ore pulp pipe to slip mass, collapse body and earthquake fault zone |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105463322A (en) * | 2015-12-11 | 2016-04-06 | 哈尔滨龙庆钢构彩板有限公司 | Novel H steel and method for symmetry welding of H steel |
| CN111604570A (en) * | 2020-06-02 | 2020-09-01 | 陕西华山路桥集团有限公司 | Cellulose vertical downward welding method for pipeline |
| CN115007977A (en) * | 2022-05-16 | 2022-09-06 | 昆明理工大学 | MIG welding method of aluminum alloy plate |
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| JPH038573A (en) * | 1989-06-07 | 1991-01-16 | Origin Electric Co Ltd | Method and equipment for electric arc welding |
| CN101433997A (en) * | 2008-12-15 | 2009-05-20 | 中国水利水电第三工程局有限公司 | Trackless type self-protecting complete position automatic soldering device and welding process thereof |
| JP2009115015A (en) * | 2007-11-08 | 2009-05-28 | Mitsubishi Electric Corp | Hermetic compressor and method for manufacturing tubular shell for hermetic compressor |
| CN103016893A (en) * | 2011-09-21 | 2013-04-03 | 中国建筑第七工程局有限公司 | Hot tapping plugging construction method of long natural gas delivery pipeline |
| CN103286414A (en) * | 2013-04-27 | 2013-09-11 | 中国石油天然气集团公司 | Welding method of oil gas transmission antisulphour steel pipelines |
| CN104551349A (en) * | 2014-11-26 | 2015-04-29 | 南京钢铁股份有限公司 | Gas shielded welding process for sulphuric-acid-dew-point-erosion-resistant steel |
-
2015
- 2015-06-17 CN CN201510336649.5A patent/CN104985280A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH038573A (en) * | 1989-06-07 | 1991-01-16 | Origin Electric Co Ltd | Method and equipment for electric arc welding |
| JP2009115015A (en) * | 2007-11-08 | 2009-05-28 | Mitsubishi Electric Corp | Hermetic compressor and method for manufacturing tubular shell for hermetic compressor |
| CN101433997A (en) * | 2008-12-15 | 2009-05-20 | 中国水利水电第三工程局有限公司 | Trackless type self-protecting complete position automatic soldering device and welding process thereof |
| CN103016893A (en) * | 2011-09-21 | 2013-04-03 | 中国建筑第七工程局有限公司 | Hot tapping plugging construction method of long natural gas delivery pipeline |
| CN103286414A (en) * | 2013-04-27 | 2013-09-11 | 中国石油天然气集团公司 | Welding method of oil gas transmission antisulphour steel pipelines |
| CN104551349A (en) * | 2014-11-26 | 2015-04-29 | 南京钢铁股份有限公司 | Gas shielded welding process for sulphuric-acid-dew-point-erosion-resistant steel |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105463322A (en) * | 2015-12-11 | 2016-04-06 | 哈尔滨龙庆钢构彩板有限公司 | Novel H steel and method for symmetry welding of H steel |
| CN111604570A (en) * | 2020-06-02 | 2020-09-01 | 陕西华山路桥集团有限公司 | Cellulose vertical downward welding method for pipeline |
| CN115007977A (en) * | 2022-05-16 | 2022-09-06 | 昆明理工大学 | MIG welding method of aluminum alloy plate |
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Application publication date: 20151021 |