Austenitic stainless steel chu argon tungsten arc welding (TIG), molten argon arc welding (MIG), plasma argon arc welding (paw) leh tui hnuaia awm Arc Welding (SAW) te hmangin weld theih a ni. Austenitic stainless steel hian welding current hniam tak a nei a, a chhan chu a melting point a hniam a, thermal conductivity a hniam a, resistivity a nei tam hle bawk. Lorrow welds leh beads te hi temperature sang tak awmna hun tihtlem te, carbide precipitation venna te, weld shrinkage stress tihziaawmna te, thermal crack sensitivity tihtlem nan te hman tur a ni. Welded pipe siam leh weld a nih hnuah chuan steel intergranular arrangement chu heat treatment hmangin a siam tha leh thei a ni. hangao tech a ni a. Thermal Insulation Type Online Bright Annealing Furnace . Pipe heating time chu thermal insulation section tihpun hmangin a tizau a, chutiang chuan weld leh base material te chu a inzawm tha zawk thei a ni.
Welding material composition, a bik takin CR leh Ni alloying elements te hi base material aiin a sang zawk a ni. Weld-a crack resistance tha tak (cold cracking, hot cracking, stress corrosion cracking) performance tha tak neih theih nan welding materials tlemte (4-12%) awmna welding material hmang ang che. Weld-a ferrite phase phal loh emaw, tih theih loh emaw a nih chuan welding material chu welding material Mo, MN leh alloy element dangte awmna a ni tur a ni.
Welding material-a C, S, P, SI, leh NB te chu a hniam thei ang bera hniam tur a ni. NB hian pure austenite weld-ah solidification crack a thlen ang a, mahse weld-a ferrite tlemte chu effective takin a pumpelh theih. Welding structures stabilized emaw welding hnua stress-relieved emaw ngai tan chuan NB-containing welding materials hman a ni tlangpui. Submerged arc welding hi middle plate weld nan hman a ni a, CR leh Ni kang lo chu welding wire-a flux leh alloy elements inthlak danglamna hmangin tihpun theih a ni a Penetration lian tak avang hian weld lai takah hot crack siam chhuah loh nan leh heat affected zone sexual reduction-a corrosion resistance awm lohna turin ngaihven a ngai a ni. Thinner welding wire leh welding heat input te zawk thlan tur a ni. Welding wire hian SI, S, leh P a nei tlem a ngai a, heat-resistant stainless steel weld-a ferrite awm zat chu 5% aia tam lo tur a ni. Austenitic stainless steel CR leh Ni content 20% aia tam nei tan chuan MN sang (6-8%) welding wire thlan tur a ni a, alkaline emaw neutral flux emaw chu weld-a SI dah lohna tur leh a crack resistance tihchangtlun nan flux atan hman tur a ni. Austenitic stainless steel atana special flux hian SI a tipung tlem hle a, chu chuan weld-ah alloy a transfer thei a, weld performance leh chemical composition mamawh phuhruk turin alloy elements halralna chu a rul thei bawk.
