wELDING TECHNIQUES USED LITERATURE 1. http:// www.aga.com/international/web/lg/aga/like35agacom.nsf (24.03.2014) 2. Larry F. Jeffus: ,,Welding: Principles and Application" WORD LIST WORD MEANING IN ESTONIAN electrode elektrood arc spark created by electron kaarleek flow slag protects the weld seam räbu nozzle device designed to control otsik the direction of a flow porosity Void fraction poorsus tungsten a material of which volfram electrodes are made inductance induktiivsus electrical current flow of electric charge elektrivool shielding Protecting something kaitse
SMAW - (Stick) - MMA Low-alloyed Description: Classification: P 4130 is a basic coated low hydrogen electrode for welding of high strength steel. AWS A5.5 ~E 10018-D2 The electrode is specially developed for welding of pipes and other equipment in base material AISI 4130 e.g high pressure mud piping for offshore work. The weld Approvals: metal retain high strength even after post- weld heat treatment. Applications: High preassure mud pipes. Note Welding positions: *Specified values in PWHT condition, welding procedure acc. 1234T6 to AWS.
Keevitamisel tekib keevisliide (weld joint). Keevisliited jagunevad 5 põhitüüpi: - põkkliide (butt joint), - nurkliide (corner joint), - ots- e. servliide (edge joint), - katteliide (lap joint), - T-liide e. vastakliide (T-joint). Keeviskoostu keevisliidet iseloomustab keevitamise tulemus keevisõmblus e. keevis (weld). Põhiõmblustena eristatakse kolmnurkse ristlõikega nurkõmblust (fillet weld, FW) ja põkkõmblust (butt weld, BW). Keevisõmbluse asend e. keevitusasend (welding position) on määratud keevisõmbluse asendiga ruumis ja keevituse vooluallika liikumise suunaga. Eristatakse järgmisi keevisõmbluse põhiasendeid ja keevitusasendeid: - allasend e. põrandaasend tähis PA, (a) - rõhtasend, horisontaalasend tähis PC, (d) - laeasend tähis PE, (b) - püstasend, vertikaalasend; keevitamisel alt üles, ülalt alla, (c)
guidance in design Consultant expects sub contractor to do detail design Lower class than necessary specified Failure to Meet Service Conditions Some Anticipated Events- Fabrication Aboveground Belowground No detail drawings Lack of training Lack of training Poor trench Insufficient joints for conditions erection Inadequate access Incomplete insertion Water ingress in joints-see later Inadequate time for weld Failure to Meet Service Conditions Some Anticipated Events-Installation Spools forced to fit Physical damage Designed supports MEK damage to missing or modified internal surface Insufficient clearance Use of PVC-U glue in clamps & guides Other services Variations from design supported from ABS not engineered Incorrect slings Surfaces not cleaned Insufficient weld time Aged solvent cement Inadequate thrust
Accordance- vastavuses Achieve- savutama Additional strengthening- tugevdus Adjust- regulerima Adjustable blades- reguleritavad labad Advantage- Eelis Adverse weather- alub ilm Affect- mõjumama Afterpeak- ahtripikk Aids- abi vahendit Allot- välja jägama Anchoring gear- ankru seade Anti-clockwise vastu päev Anti-cyclone- anti tsüklon Anti-fouling paint- mürk värv Apply to taotlema Approve- heaks kiitma Assess- hindama Auxiliary engine- abi masin Avoid- vältima Award- autosutama Axis- teelg Balance rudder- balanseerool Beam- põikitala Bearing- peiling Beathing- sildumine Bevel- kaldserv Bevel wheel- konushammas ratas Bhp-...
1. MIG/MAG-keevituse alused 1.1. MIG/MAG-keevituse tööpõhimõte MIG/MAG-keevituse tööpõhimõtet ja masina ehitust selgitavad skeemid joonistel 1.1 ja 1.2. Keevitamise ülesandeks on moodustada kahe liidetava detaili vahele püsiliide, mille mehaanilised omadused (tõmbetugevus, katkevenivus, purustustöö löökpaindel) ei jääks alla detailide materjali omale. Keevitamisel sulatatakse traadist elektroodi ots ja liidetavate detailide servad kaarleegiga, mida kutsutakse keevituskaareks. Keevituskaare temperatuur võib ulatuda kuni 50007000 °C elektroodil ja kuni 26003900 °C kaares. Elektroodi keevitustraadi kujul antakse kaarevahemikku ette ühtlase kiirusega ja mehhaniseeritult traadietteandemehhanismi rullide abil. Kasutatakse poolile keritud keevitustraati (joonisel näitamata). Keevitusvooluna kasutatakse vastupolaarset (DC+) alalisvoolu, kus elektrood ühendatakse vooluallika +klemmiga. Keevitusvool antakse energiakadude vähenda- miseks k...
paljud protsessid sõltuvad inimfaktorist; sageli vajalik mittepurustav kontroll ja pidev järelvalve. Keevitamisel tekib keevisliide (weld joint). Keevisliited jagunevad 5 põhitüüpi: põkkliide (butt joint), nurkliide (corner joint), ots- e. servliide (edge joint), katteliide (lap joint), T-liide e. vastakliide (T-joint). Keeviskoostu keevisliidet iseloomustab keevitamise tulemus keevisõmblus e. keevis (weld). Põhiõmblustena eristatakse kolmnurkse ristlõikega nurkõmblust (fillet weld, FW) ja põkkõmblust (butt weld, BW). Keevisõmbluse asend e. keevitusasend (welding position) on määratud keevisõmbluse asendiga ruumis ja keevituse vooluallika liikumise suunaga. Eristatakse järgmisi keevisõmbluse põhiasendeid ja keevitusasendeid: allasend e. põrandaasend tähis PA, (a) rõhtasend, horisontaalasend tähis PC, (d) laeasend tähis PE, (b) püstasend, vertikaalasend; keevitamisel alt üles, ülalt alla, (c)
2. sageli vajalik mittepurustav kontroll ja pidev järelvalve. Keevitamisel tekib keevisliide (weld joint). Keevisliited jagunevad 5 põhitüüpi: - põkkliide (butt joint), - nurkliide (corner joint), - ots- e. servliide (edge joint), - katteliide (lap joint), - T-liide e. vastakliide (T-joint). Keeviskoostu keevisliidet iseloomustab keevitamise tulemus - keevisõmblus e. keevis (weld). Põhiõmblustena eristatakse kolmnurkse ristlõikega nurkõmblust (fillet weld, FW) ja põkkõmblust (butt weld, BW). Keevisõmbluse asend e. keevitusasend (welding position) on määratud keevisõmbluse asendiga ruumis ja keevituse vooluallika liikumise suunaga. Eristatakse järgmisi keevisõmbluse põhiasendeid ja keevitusasendeid: - allasend e. põrandaasend - tähis PA, (a) - põranda nurk Pb - rõhtasend, horisontaalasend - tähis PC, (d) - lae- seinanurk Pd - laeasend - tähis PE, (b)
She had thought that pregnant women are wearing invisible halos, not committing mayhem. a suit of mail (199) - a kind of armor, made from interlocking metal rings. It's effective against some cutting weapons. Albertine describes Dot's knitted garments which stood up like miniature suits of mail. sallow (203) Of an unhealthy yellowish color. Albertine describes Dot after pregnancy. Her skin was loose, sallow, and draped like upholstery fabric over her bones. to weld (206) - To bring into close association or union. When Albertine misses Dot, the days were like welded seamlessly to one another and taking the mind away. addled (208) Make unable to think clearly; confuse. After visiting Dot, Gerry looked bewildered, silly and a little addled with what he saw. warped (218) - strange and unpleasant. June haunts Gordie. Gordie escapes from the house, drives a car and then pulls it over to catch his senses. His mind lit in warped hope on another bottle
Construction MKA was hired by the general contractor, Hoffman Construction, to build a 3D structural model showing the sequence of steel erection. That model was included in the bid documents to all the potential steel bidders. It showed approximately 320t of temporary steel and the correct erection sequence. It was imperative that a certain erection pattern was followed, otherwise the steel would have corkscrewed down on itself before the workers had time to fully weld up all the connections and brace the structure. In addition to explaining the complex erection sequence, the model proved valuable in obtaining an accurate up front price early on in the project (Appendix B). The steel erector, TEC used two separate models to plan their work: 1) the temporary steel model from MKA; 2) the Tekla model from BDS. During the construction of the Seattle Central Library, 4D sequencing was in its infancy, and they did not have a 4D
After several changes, type clips. Ensure that the fuel hoses are hose connection between the sections of rigid rinse out finally with petrol. 4A correctly reconnected as noted before fuel line at the front face of the tank (see 10 If the tank is leaking, leave repair to a removal (see illustration). illustration). On some models dual pipelines specialist company. Attempting to weld or are used, the second one being a fuel return solder the tank without it first having been line which returns excess fuel from the steamed out for several hours is extremely 6 Fuel tank - removal and refitting carburettor. dangerous.
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