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Ebivaako n’ebiziyiza eby’ekyuma ekitali kizimbulukuse welded payipu obuzibu (2) .

Views: 0     Omuwandiisi: Omuwandiisi w'omukutu Publish Time: 2022-12-29 Ensibuko: Ekibanja

Buuza .

Mu bitundu ebisembayo, twogedde ku bitundu by’ebivaako n’engeri y’okuziyizaamu eby’obulema mu payipu eziweereddwa ekyuma ekitali kizimbulukuse. Leero, tusigala tutunuulira ebisigadde.

6. Ekiwonvu .

Ekitundu ekibbira ku nkomerero ya weld ya payipu ya stainless steel welded kiyitibwa arc crater. Arc crater tekoma ku kunafuya nnyo maanyi ga weld eyo, naye era efulumya arc crater cracks olw’obucaafu obungi.

Ebivaako: Ensonga enkulu eri nti ekiseera ky’okubeera mu kuzikira kwa arc kimpi nnyo; Akasannyalazo kaba kanene nnyo nga kaweta obupande obugonvu.

Ebikolwa eby’okwetangira: Okuweta kw’amasannyalaze (electrode arc welding) bwe kuggalwa, ekisannyalazo kisaana okusigala mu kidiba ekisaanuuse okumala akaseera oba okudduka mu ntambula ey’enkulungo, n’oluvannyuma kigende ku ludda olumu okuzikiza arc oluvannyuma lw’ekidiba ekisaanuuse okujjula ekyuma; Tungsten argon arc welding, wateekwa okubaawo ekimala ekiseera ky’okubeera ne kikendeezebwa era arc ezikizibwa oluvannyuma lw’okujjuza weld.

7. Stomata .

Bw’oba ​​okola welding sanitary stainless steel welded payipu, omukka mu kidiba ekisaanuuse gulemererwa okutoloka nga gukaluba era ebituli ebikolebwa nga bisigadde biyitibwa obutuli. Obuziba (porosity) kye kikyamu ekitera okubeerawo mu kuweta, ekiyinza okwawulwamu obuziba obw’omunda n’obuziba obw’ebweru mu weld. Stomata zibeera zeetooloovu, za kikuusikuusi, ziringa ebiwuka, ziringa empiso era nga zirimu ebitundu ebinene. Okubeerawo kw’obutuli tekijja kukosa buzito bwa weld yokka, wabula n’okukendeeza ku kitundu ekikola ku weld n’okukendeeza ku byuma bya weld.

Ebivaako: Waliwo amafuta, obusagwa, obunnyogovu n’obucaafu obulala ku ngulu n’ekisenge ky’ekyuma ekiweweeza ku kyuma ekitaliimu buyonjo; Ekizigo kya electrode kibeera kinnyogovu mu kiseera kya arc welding era tekikalidde nga tonnaba kukikozesa; Arc ewanvuwa nnyo oba ekitundu ekifuuwa, ekiziyiza ky’ekidiba ekisaanuuse si kirungi, empewo eyingira mu kidiba ekisaanuuse; Akasannyalazo aka welding kali waggulu nnyo, ekisannyalazo kifuuka ekimyufu, ekizigo kigwa nga bukyali, era ekikolwa eky’obukuumi kibula; Enkola y’okukola si ntuufu, gamba ng’ekikolwa ky’okuggalawo arc kya mangu nnyo, kyangu okufulumya ekituli ky’okukendeera, era ekikolwa ekikwata arc eky’ekiyungo si kituufu, eky’angu okufulumya stomata ennene, n’ebirala.

Enkola eziziyiza: Nga tonnaba kuweta, ggyawo amafuta, obusagwa, n’obunnyogovu mu mmita 20-30 ku njuyi zombi ez’ekisenge; Fumbira mu ngeri enkakali ng’ogoberera ebbugumu n’obudde ebiragiddwa mu kitabo ky’obusannyalazo; londa bulungi enkola ya welding era okole bulungi; Kozesa arc ennyimpi nga bwe kisoboka welding, okuzimba mu nnimiro kulina okuba n’ebifo ebiziyiza empewo; Electrodes ezitali ntuufu tezikkirizibwa, gamba nga welding core corrosion, okusiiga enjatika, okusekula, eccentricity esukkiridde, n’ebirala.

8. Ebiyingizibwamu n’ebiyingizibwamu .

Ebiyingizibwamu biba biyingizibwamu ebitali bya kyuma ne oxides ebisigadde mu kyuma kya weld ekikolebwa ensengekera z’ebyuma. Slag inclusions zino zibeera mu slag ezisaanuuse ezisigala mu weld. Stainless steel welded payipu slag inclusions zisobola okwawulwamu ebika bibiri: spot slag inclusions ne strip slag inclusions. Okuyingiza slag kunafuya ekitundu ekikola eky’okuweta, bwe kityo ne kikendeeza ku butonde bw’ebyuma mu weld. Slag inclusions era zisobola okuleeta okunyigirizibwa, ekiyinza okwanguyirwa okwonoona ensengekera ya welded nga etikddwa. Ebivaako: Ensuwa ya interlayer si nnyonjo mu nkola ya welding; Akasannyalazo aka welding katono nnyo; Sipiidi ya welding eba ya mangu nnyo; Okulongoosa kuno tekusaana mu kiseera ky’okuweta; Ekirungo ky’eddagala eky’ekintu ekiweta n’ekyuma ekikulu tekikwatagana bulungi;

Enkola ez’okwetangira: Londa obusannyalazo obulina omulimu omulungi ogw’okuggyawo slag; Ggyawo n’obwegendereza interlayer slag; Londa mu ngeri entuufu enkola y’enkola ya welding; Teekateeka enkola ya electrode angle n’enkola y’okutambuza.

Nga olondawo a . Welded pipe production line , oyinza okulowooza ku ky’okuteeka enkola ya PLC ey’amagezi. Hangao Tech (Seko Machinery) PLC System tesobola kukoma ku kulondoola data y’okufulumya mu kiseera ekituufu, wabula n’okuteekawo database okutereka ensengekera z’okufulumya eza payipu eziweerezeddwa ez’ebiragiro eby’enjawulo, enkola y’okufulumya esobole okuyingira mu biwandiiko bya database ekiseera kyonna.

9. Okwokya okuyita mu .

Mu nkola y’okuweta, ekyuma ekisaanuuse kikulukuta okuva emabega w’ekisenge, era obuzibu bw’ebituli mu payipu eweweevu ey’ekyuma ekitali kizimbulukuse buyitibwa okwokya. Burn-through kye kimu ku bitera okubeera mu arc welding.

Ebivaako: Akasannyalazo akanene aka welding, sipiidi ya welding empola, okubuguma okuyitiridde okwa payipu eya welded; Ekituli ekinene ekya groove, empenda ennyimpi ennyo etali ya maanyi; Obukugu mu kukola ku welder obubi, n'ebirala.

Ebikolwa eby’okuziyiza: londa enkola entuufu ey’enkola ya welding n’obunene bw’ekisenge obutuufu; Okulongoosa obukugu mu kukola ku welder, n’ebirala.

10. Enjatika .

Enjatika za payipu eziweweevu ez’ekyuma ekitali kizimbulukuse zisobola okugabanyizibwamu enjatika ennyogovu, enjatika ezibuguma n’okuddamu okubugumya enjatika okusinziira ku bbugumu n’ekiseera bibaawo; Ziyinza okwawulwamu enjatika ez’obuwanvu, enjatika eziwanvuwa, enjatika z’ebikoola bya weld, enjatika za arc crater, enjatika za layini z’okuyunga n’enjatika z’ekitundu ezikoseddwa ebbugumu, n’ebirala Enjatika ze zisinga okuba ez’obulabe mu bizimbe ebiweereddwa, ekitajja kukoma ku kufuula bintu kusasika, naye n’okuleeta obubenje obw’amaanyi.

(1) Enjatika eyokya .

Mu nkola y’okuweta, enjatika z’okuweta ezikolebwa omusono gw’okuweta n’ekyuma mu kitundu ekikoseddwa ebbugumu okutuuka ku bbugumu eringi okumpi ne layini ya solidus ziyitibwa enjatika ez’ebbugumu. Kye kizibu kya welding eky’obulabe ekitakkirizibwa kubeerawo. Okusinziira ku nkola, ebbugumu ly’ebbugumu n’enkula y’enjatika z’ebbugumu eza payipu eziweereddwa, enjatika z’ebbugumu zisobola okwawulwamu enjatika z’okufuuka ekiristaayo, enjatika z’amazzi agabuguma amangi n’enjatika ez’obuveera obutono ez’ebbugumu eringi.

Ekivaako: Ensonga enkulu eri nti low melting point eutectic n’obucaafu mu kidiba ekisaanuuse ebyuma bikola okwawula okw’amaanyi okw’omunda n’okw’omu bitundu eby’enjawulo mu nkola y’okufuuka ekiristaayo, ate mu kiseera kye kimu wansi w’ekikolwa ky’okunyigirizibwa kw’okuweta. Ku nsalo z’empeke zisimbulwa, ne zikola enjatika ez’ebbugumu. Enjatika ezibuguma okutwalira awamu zibeerawo mu kyuma ekitali kizimbulukuse ekya austenitic, nickel alloy ne aluminum alloy. Okutwalira awamu ekyuma ekirimu kaboni omutono si kyangu kufulumya nnyatika ez’ebbugumu mu kiseera ky’okuweta, naye nga kaboni alimu ekyuma kyeyongera, omuze gw’enjatika ez’ebbugumu nagwo gweyongera. Enkola ez’okuziyiza: zifuga nnyo ebirimu eby’obulabe nga ekibiriiti ne phosphorus mu payipu eziweweevu ez’ekyuma ekitali kizimbulukuse n’ebikozesebwa mu kuweta, zikendeeza ku buwulize bw’enjatika ez’ebbugumu; Teekateeka ekirungo ky’eddagala mu kyuma kya weld, okulongoosa ensengekera ya weld, okulongoosa empeke, okulongoosa obuveera, okukendeeza oba okusaasaanya ddiguli y’okwawula; Kozesa ebikozesebwa mu kuweta alkaline okukendeeza ku bucaafu obuli mu weld n’okulongoosa eddaala ly’okwawula; Londa ebipimo by’enkola ya welding ebituufu, yongera mu ngeri esaanidde ensonga y’okukola weld, era otwale enkola ya multi-layer ne multi-pass welding; Kozesa ekyuma kye kimu eky’omusulo n’ekyuma ekisookerwako, oba kizikiza mpolampola arc, era ojjuze arc crater okwewala enjatika z’ebbugumu ku arc crater.

(2) Enjatika ennyogovu .

Enjatika ezikolebwa nga ekiyungo ekiweereddwa kinyogozeddwa okutuuka ku bbugumu erya wansi (ku kyuma ekiri wansi wa M. ebbugumu) kiyitibwa enjatika ennyogovu. Enjatika ennyogovu zisobola okulabika amangu ddala nga omaze okuweta, oba kiyinza okutwala ekiseera (essaawa, ennaku oba n’okusingawo) okulabika. Enjatika ey’ekika kino nayo eyitibwa Delayed Crack. akabi akanene.

Ebivaako: Ensengekera enkakanyavu ekolebwa enkyukakyuka ya martensite, okunyigirizibwa okusigaddewo okuweta (welding residual stress) okukolebwa ku ddaala eddene ery’okuziyiza, ate haidrojeni esigala mu weld y’ensonga enkulu essatu ezireeta enjatika ennyogovu.

Enkola ez’okwetangira: Londa ebikozesebwa mu kuweta ebitaliimu haidrojeni omutono, era obifumbe mu ngeri enkakali ng’ogoberera ebiragiro nga tonnaba kubikozesa; Ggyako amafuta n’obunnyogovu ku weldments nga tonnaba kuweta, era okendeeze ku hydrogen ebirimu mu weld; Londa enkola ensaamusaamu welding parameters n'ebbugumu okuyingiza okukendeeza ku hardening tendency y'omusono gwa weld; Enkola y’okumalawo haidrojeni ekolebwa amangu ddala nga bamaze okuweta okufuula haidrojeni okutoloka mu kiyungo ekiweereddwa; Ku payipu ya welded ekyuma ekitali kizimbulukuse ng’erina omuze ogw’okukaza ennyo, okusooka okubuguma nga tonnaba kuweta n’okulongoosa ebbugumu mu budde oluvannyuma lw’okuweta kisobola okulongoosa ensengekera n’omutindo gw’ekiwanga. Okwoolesa; Weetegereze enkola ez’enjawulo eza tekinologiya okukendeeza ku situleesi ya welding.

(3) Okuddamu okubuguma enjatika .

Oluvannyuma lw’okuweta, payipu ya welded ekoleddwa mu kyuma ekitali kizimbulukuse eddamu okubuguma mu bbanga erimu ery’ebbugumu (stress relief heat treatment oba enkola endala ey’okufumbisa) era enjatika ziyitibwa enjatika eziddamu okubuguma.

Ebivaako: Enjatika z’okuddamu okubugumya okutwalira awamu zibeerawo mu byuma ebirina amaanyi amatono, ebyuma ebiziyiza ebbugumu lya luulu n’ebyuma ebitali bimenyamenya ebirimu vanadium, chromium, molybdenum, boron n’ebintu ebirala ebikola aloy. Oluvannyuma lw’enzirukanya y’ebbugumu ey’okuweta, zibuguma okutuuka mu kitundu ekiwuliziganya (550 ~650°C). Enjatika ezisinga zisibuka mu kitundu ekirimu empeke enzirugavu (coarse-grained zone) eky’ekitundu ekiyitibwa welding heat-affected zone. Enjatika ezisinga ez’okuddamu okubugumya zibeerawo mu payipu eziweweevu ez’ekyuma ekitali kizimbulukuse n’ebifo ebiteekebwamu situleesi, era enjatika eziddamu okubuguma oluusi zibeerawo mu kuweta kwa layeri nnyingi.

Enkola ez’okuziyiza: Ku nsonga y’okutuukiriza ebisaanyizo by’okukola dizayini, londa ebikozesebwa mu kuweta eby’amaanyi amatono, olwo amaanyi ga weld ne gabeera wansi okusinga ag’ekyuma ekikulu, era situleesi ewummudde mu weld okwewala enjatika mu kitundu ekikoseddwa ebbugumu; okukendeeza ku welding residual stress ne stress concentration; Fuga ebbugumu eriyingira mu payipu eya welding, londa mu ngeri entuufu ebbugumu ly’okusooka okubuguma n’okulongoosa ebbugumu, era weewale ekitundu ekiwuliziganya nga bwe kisoboka.

Ebikwatagana Products .

Buli ttanka y’okumaliriza lw’eyiringisibwa, erina okuyita mu nkola y’okulongoosa eddagala. TA Okukakasa nti omulimu gwa payipu y’ekyuma gutuukiriza ebisaanyizo eby’ekikugu. n’okuwa omusingo gw’okukola oba okukozesa oluvannyuma lw’enkola. Bright solution treatment process of ultra-long seamless steel pipe bulijjo ebadde kizibu mu mulimu guno.

Ebyuma by’ekikoomi eby’amasannyalaze eby’ennono binene,ebibikka ekitundu ekinene, bikozesa amaanyi mangi n’okukozesa omukka omunene, n’olwekyo kizibu okutegeera enkola ya solution eyakaayakana. Oluvannyuma lw’emyaka mingi nga bakola nnyo n’okukulaakulana mu ngeri ey’obuyiiya, okukozesa tekinologiya ow’omulembe ow’okufumbisa ow’omulembe n’amasannyalaze ga DSP. Okufuga obulungi ebbugumu ly’ebbugumu okukakasa nti ebbugumu lifugibwa munda mu T2C,okugonjoola ekizibu ky’eby’ekikugu eky’okufuga ebbugumu ly’okufumbisa okutali kutuufu okutali kutuufu. Payipu y'ekyuma ekibuguma enyogozeddwa 'heat conduction'mu tunnel ey'enjawulo eggaddwa nga eggaddwa, ekendeeza nnyo ku ggaasi ekozesebwa era nga esinga kukwata ku butonde bw'ensi.
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