GB2061156A - Method of and apparatus for use in weld building-up of cylindrical articles - Google Patents
Method of and apparatus for use in weld building-up of cylindrical articles Download PDFInfo
- Publication number
- GB2061156A GB2061156A GB8034010A GB8034010A GB2061156A GB 2061156 A GB2061156 A GB 2061156A GB 8034010 A GB8034010 A GB 8034010A GB 8034010 A GB8034010 A GB 8034010A GB 2061156 A GB2061156 A GB 2061156A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rotation
- weld
- gases
- welding
- build
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims description 19
- 239000007789 gas Substances 0.000 claims abstract description 32
- 238000003466 welding Methods 0.000 claims abstract description 29
- 238000010891 electric arc Methods 0.000 claims abstract description 9
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims description 14
- 239000000779 smoke Substances 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000013021 overheating Methods 0.000 claims description 4
- 230000005855 radiation Effects 0.000 claims description 4
- 238000011109 contamination Methods 0.000 claims description 2
- 230000002939 deleterious effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 claims description 2
- 239000000284 extract Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 229910000734 martensite Inorganic materials 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000010791 quenching Methods 0.000 claims description 2
- 230000000171 quenching effect Effects 0.000 claims description 2
- 230000000007 visual effect Effects 0.000 claims description 2
- HSFWRNGVRCDJHI-UHFFFAOYSA-N Acetylene Chemical compound C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 abstract 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
- B23K9/32—Accessories
- B23K9/325—Devices for supplying or evacuating shielding gas
-
- 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
- B23K9/04—Welding for other purposes than joining, e.g. built-up welding
- B23K9/044—Built-up welding on three-dimensional surfaces
- B23K9/046—Built-up welding on three-dimensional surfaces on surfaces of revolution
- B23K9/048—Built-up welding on three-dimensional surfaces on surfaces of revolution on cylindrical surfaces
-
- 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
- B23K9/18—Submerged-arc welding
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
In providing a body of rotation with a build-up weld of appreciable thickness produced in an electric arc, fresh air is supplied through a duct 10, and welding gas, cooling vapour and radiant heat are removed through an exhaust duct 4 both indirectly, via interconnected adjustable hoods 5 and a blower 6, and directly. A heat exchanger 12 in the duct 4 may be provided to extract heat energy from the radiant heat and gases. Submerged-arc welding is referred to. <IMAGE>
Description
SPECIFICATION
Method of and apparatus for producing cylindrical articles
The invention relates to a method of and apparatus for producing cylindrical articles, wherein a prefabricated body of rotation is provided with a build-up weld of appreciable thickness produced in an electric arc.
In such apparatus - such as described for example in DE-AS 23 64495 - it is provided that during submerged welding the workpiece, that is to say the body of rotation to be provided with a build-up, is maintained at a temperature of from 200 to 6500C and the welding material is quenched locally below the martensite point. The purpose of this arrangement resides interalia in obtaining a crack-free weld structure which is as homogeneous as possible.
Since quenching occurs preferably in the immediate region of the welding zone and chiefly with a liquid which tends to form gas or vapour, the risk exists that the build-up weld is influenced in an unfavourable manner. If, furthermore, not only the relatively high production temperatures are taken into account, but also the extreme generation of smoke gas in a submerged welding method, it becomes clear that measures must be taken which satisfy the following demands:
1. Protection of the operating personnel against the exhaust gases which are produced by heating the body of rotation as well as also against welding gases which are formed by the submerged welding, and a protection against the vapour generated during cooling;
2. Protection of the apparatus against heat distortion, in particular of the welding device which is located directly above welding zone;
3.Avoidance of air contamination in the work region (e.g. the workshop) of the apparatus;
4. Ensurance that a visual control of the individual operating stages is possible during the buildup weld to be produced;
5. Energy saving by regaining the heat which is contained in the medium to be guided away - viz.
exhaust gases, welding gases, vapour -.
According to one aspect of the present invention there is provided a method of producing cylindrical articles, wherein a prefabricated body of rotation is provided with a build-up weld of appreciable thickness produced in an electric arc, wherein during the production of the build-up weld the radiant heat and also the smoke gases, welding gases and/or vapour gases produced are guided away.
This method provided according to the invention permits the operating personnel to work without problems and ensures that the build-up weld can be produced in a controllable manner, undisturbed by deleterious influences. Preferably, the heat energy is extracted from the medium which consists of the radiation heat and the smoke gases or steam gases, respectively, the said heat being usable in a useful way in a manner still to be described in detail.
Apparatus for performing the method according to the invention comprises an air supply and exhaust system which comprises a fresh air duct and a blower which thrbugh exhaust ducts is in communication with hoods adjustable to the body of rotation and which blows the medium to be removed into an exhaust duct.
Preferably, the exhaust duct is so arranged that the medium which has not been caught by the blower flows thermically into the exhaust duct.
A desirable saving of energy is obtained if the exhaust duct is in communication with a heat exchanger.
The invention will now be further described by way of example with reference to the drawing which is a diagram of one embodiment of apparatus for producing cylindrical articles.
A body of rotation 2 which is to be provided with a build-up weld is supported on two displaceable roller frames 1 and is set in rotation about its longitudinal axis in a positive manner at one or both of its ends. The body of rotation 2 is provided at its periphery at least partly with exhaust hoods 5 which are in communication with one another by means of pipelines 13 or the like and are preferably arranged in the region of a welding device 8. The pipeline 13 is in communication with a blower 6 which sucks away the smoke gas or steam, respectively located in the exhaust hoods 5 and blows them into an exhaust duct 4.
Located in the same plane as the exhaust duct 4, a fresh air duct 10 is provided which is associated with an isolating wall 11 and from which fresh air flows out in such a manner that the welding device is cooled continuously and forms an air veil and that not only overheating of the welding device 8 does not occur, but simultaneously the radiation heat which originates from a heating device 3 cannot reach the region of a support structure 9 which serves as an observation stand for the personnel.
The heating device 3 - which is not a subject matter of the present invention - serves for additionally heating the body of rotation 2 to the temperature referred to above. In contrast a cooling device 14 which is provided in the region of the displaceable heating device 3 ensures that in case of overheating the body of rotation 2 may be cooled down to the desired temperature, if circumstances demand. This arrangement also is not part of this invention.
In order to save energy - which in the case of need may be returned again to the heating device 3 or used in another form of heating e.g. a space heater the exhaust duct 4 is associated with a heat exchanger 12 which extracts heat energy from the medium fed thereto and stores it.
1. A method of producing cylindrical articles, wherein a prefabricated body of rotation is provided with a build-up weld of appreciable thickness produced in an electric arc, wherein during the production of the build-up weld the radiant heat and also the smoke gases, welding gases and/or vapour gases produced are guided away.
2. A method as claimed in claim 1, wherein the heat energy is extracted from the radiant heat and
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (7)
1. A method of producing cylindrical articles, wherein a prefabricated body of rotation is provided with a build-up weld of appreciable thickness produced in an electric arc, wherein during the production of the build-up weld the radiant heat and also the smoke gases, welding gases and/or vapour gases produced are guided away.
2. A method as claimed in claim 1, wherein the heat energy is extracted from the radiant heat and the gases during removal thereof.
3. Apparatus for performing the method as claimed in claim 1 or 2, comprising an air supply and exhaust system including a fresh air duct and a blower which is in communication with hoods adjustable to the body of rotation through suction ducts and blows the medium to be removed into an exhaust duct.
4. Apparatus as claiamed in claim 3, wherein the exhaust duct is so arranged that the medium which has not been caught by the blower flows thermically into the exhaust duct.
5. Apparatus as claimed in claim 3 or 4, wherein the exhaust duct is in communication with a heat exchanger.
6. A method of producing cylindrical articles, wherein a prefabricated body of rotation is provided with a build-up weld of appreciable thickness produced in an electric arc, substantially as herein described with reference to the accompanying drawing.
7. Apparatus for producing cylindrical articles, wherein a prefabricated body of rotation is provided with a build-up weld of appreciable thickness produced in an electric arc, substantially as herein described with reference to and as illustrated in the accompanying drawing.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19792942914 DE2942914A1 (en) | 1979-10-24 | 1979-10-24 | METHOD AND DEVICE FOR PRODUCING CYLINDRICAL BODIES |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2061156A true GB2061156A (en) | 1981-05-13 |
Family
ID=6084232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8034010A Withdrawn GB2061156A (en) | 1979-10-24 | 1980-10-22 | Method of and apparatus for use in weld building-up of cylindrical articles |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS5686695A (en) |
| DE (1) | DE2942914A1 (en) |
| FR (1) | FR2467652A1 (en) |
| GB (1) | GB2061156A (en) |
| IT (1) | IT1134003B (en) |
| SE (1) | SE8007458L (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4540872A (en) * | 1984-02-06 | 1985-09-10 | Dayton Machine Tool Company | Apparatus for rotating a generally cylindrical heavy workpiece for treatment |
| EP0156053A1 (en) * | 1984-03-13 | 1985-10-02 | National Forge Company | Pipe moulds |
| EP0184650A1 (en) * | 1984-12-14 | 1986-06-18 | GebràDer Sulzer Aktiengesellschaft | Hollow cylinder production process and apparatus for carrying out this process |
| US4857694A (en) * | 1988-05-06 | 1989-08-15 | The Babcock & Wilcox Company | Method and apparatus for automatic vapor cooling when shape melting a component |
| WO1989011927A1 (en) * | 1988-06-10 | 1989-12-14 | Halton Oy | Focussed ventilation procedure of a work spot and a focussed ventilation means |
| WO1989011928A1 (en) * | 1988-06-10 | 1989-12-14 | Halton Oy | Focussed ventilation procedure and focussed ventilation means |
| EP0452213A1 (en) * | 1990-04-12 | 1991-10-16 | Societe Nationale D'etude Et De Construction De Moteurs D'aviation "Snecma" | Welds protection device by gaseous diffusion and method for carrying out |
| EP1700644A3 (en) * | 2005-03-08 | 2008-08-13 | Karosserie-Akademie Wilfried Mennel | Exhaust air suction device |
| CN114749863A (en) * | 2022-01-25 | 2022-07-15 | 淮北众城水泥有限责任公司 | Rotatory build-up welding device of cement raw materials vertical grinding layer |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL123386C (en) * | 1965-01-14 | 1967-07-17 | ||
| GB1236029A (en) * | 1968-02-09 | 1971-06-16 | Greenside Machine Co Ltd | Improvements in or relating to tunnelling or mining machines |
-
1979
- 1979-10-24 DE DE19792942914 patent/DE2942914A1/en not_active Ceased
-
1980
- 1980-10-22 GB GB8034010A patent/GB2061156A/en not_active Withdrawn
- 1980-10-23 IT IT25530/80A patent/IT1134003B/en active
- 1980-10-23 JP JP15001580A patent/JPS5686695A/en active Pending
- 1980-10-23 SE SE8007458A patent/SE8007458L/en not_active Application Discontinuation
- 1980-10-23 FR FR8022706A patent/FR2467652A1/en not_active Withdrawn
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4540872A (en) * | 1984-02-06 | 1985-09-10 | Dayton Machine Tool Company | Apparatus for rotating a generally cylindrical heavy workpiece for treatment |
| EP0156053A1 (en) * | 1984-03-13 | 1985-10-02 | National Forge Company | Pipe moulds |
| US4601322A (en) * | 1984-03-13 | 1986-07-22 | National Forge Company | Weld forming of pipe molds |
| EP0184650A1 (en) * | 1984-12-14 | 1986-06-18 | GebràDer Sulzer Aktiengesellschaft | Hollow cylinder production process and apparatus for carrying out this process |
| US4857694A (en) * | 1988-05-06 | 1989-08-15 | The Babcock & Wilcox Company | Method and apparatus for automatic vapor cooling when shape melting a component |
| WO1989011928A1 (en) * | 1988-06-10 | 1989-12-14 | Halton Oy | Focussed ventilation procedure and focussed ventilation means |
| WO1989011927A1 (en) * | 1988-06-10 | 1989-12-14 | Halton Oy | Focussed ventilation procedure of a work spot and a focussed ventilation means |
| US5063834A (en) * | 1988-06-10 | 1991-11-12 | Halton Oy | Focussed ventilation procedure and focussed ventilation means |
| US5133689A (en) * | 1988-06-10 | 1992-07-28 | Halton Oy | Focussed ventilation procedure of a work spot and a focussed ventilation means |
| EP0452213A1 (en) * | 1990-04-12 | 1991-10-16 | Societe Nationale D'etude Et De Construction De Moteurs D'aviation "Snecma" | Welds protection device by gaseous diffusion and method for carrying out |
| FR2660888A1 (en) * | 1990-04-12 | 1991-10-18 | Snecma | GAS DIFFUSION WELD PROTECTION DEVICE AND METHOD FOR IMPLEMENTING SAME. |
| EP1700644A3 (en) * | 2005-03-08 | 2008-08-13 | Karosserie-Akademie Wilfried Mennel | Exhaust air suction device |
| CN114749863A (en) * | 2022-01-25 | 2022-07-15 | 淮北众城水泥有限责任公司 | Rotatory build-up welding device of cement raw materials vertical grinding layer |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2467652A1 (en) | 1981-04-30 |
| IT1134003B (en) | 1986-07-24 |
| DE2942914A1 (en) | 1981-04-30 |
| JPS5686695A (en) | 1981-07-14 |
| IT8025530A0 (en) | 1980-10-23 |
| SE8007458L (en) | 1981-04-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |