Cov tswv yim welding thiab cov txheej txheem tseem ceeb rau pob tw - weld flanges

Raws li ib qho tseem ceeb hauv kev sib txuas hauv kev sib txuas, qhov zoo ntawm Weld ncaj qha cuam tshuam cov kab ke ntawm kev sib khi, siab tiv taus, thiab lub neej pabcuam. Mastering yog yog qhov tseem ceeb heev rau kev ua kom muaj kev sib txuas flange kev ntseeg tau.

1. Ua ntej -} vuam npaj

Ua ntej vuam muag, Weld cov nplaim taws ntawm Flange thiab yeeb nkab yuav tsum tau huv kom tshem tawm cov roj, cov xeb, ua kom cov roj ua kom huv. Tsis tas li, xyuas tias cov Flange thiab cov khoom sib xws sib phim, tshwj xeeb tshaj yog cov groove kaum (feem ntau 30} {}}} 3mm). Kev sib txawv ntau dhau yuav ua rau muaj kev ntxhov siab lossis tsis tiav Weld nkag. Ib qho ntxiv, xaiv cov qes - hydrogen electrodes (ci li cas-qhuav cov electrodes (ci℃rau ib teev) kom txo txoj kev pheej hmoo ntawm hydrogen-inducts cracking.

2. Vuam Cov Txheej Txheem Tswj Xyuas

Siv ntau -} pass, mult-}} dhau vuam txoj kev. Thaum vuam thawj txheej cag, qhov tam sim no yuav tsum tau khaws cia tsawg (pom zoo kom muaj 10% {}}} 15% qis dua tus nqi txheem). Siv cov oscillations maj mam vuam kom ua kom tiav weld nkag rau hauv paus thiab weld-dawb weld. Tam sim no yuav tsum tau maj mam zog thaum lub tsev muab tso ua chaw ua haujlwm, tab sis overheating yuav tsum zam kom tiv thaiv kev deformation flormation. Rau cap vuam, tsom rau kev ua kom zoo nkauj ua tiav, tswj lub pas dej kub weld, thiab tiv thaiv kev txwv lossis weld overhangs. Cov Ntawv Pom Zoo Vuam yog pib ntawm sab nraud ntawm cov flange thiab Weld symmetrically kom sib npaug kev ntxhov siab.

3. Post {{{{}} kev thiab tshuaj xyuas

Tom qab vuam, cia li cia peb weld kom txias ib txwm mus rau chav sov. Yuam kom txias yog txwv tsis pub embrittlement. Siv lub kaum ntse ntse los ntxuav tes los ntawm Weld nto thiab ua qhov 100% pom kev tsis xws luag xws li pores thiab tawg. Kev sim ua tau zoo hauv sab hauv zoo yuav siv x {{4 4}} duab tshav lossis ultrasonic kuaj yog tias tsim nyog. Siab txog ntsha tawg flanges tseem yuav tsum tau kuaj hydostatic raws li cov qauv.

4. Qhov teeb meem uas ib txwm muaj

Yog tias tsis muaj fusion tshwm sim, kho qhov tam sim no lossis ua kom zoo nkauj rau cov zawj. Yog tias tus weld undercuts, txo cov arc ntev thiab tswj cov arc amplitude. Preheating siab high - alloy flanges mus rau 100-150℃thiab txias txias yog pom zoo kom tiv thaiv kev tawg txias.

Vuam taub qab - Weld Flanges yuav tsum tsis tsuas muaj kev txawj ntse tab sis kuj mloog kom ceev faj rau kom meej. Tsuas yog los ntawm nruj me ntsis tom qab cov txheej txheem specifications tuaj yeem muaj kev nyab xeeb thiab ua kom zoo dua pipeline system sib txuas ua tiav.