Stainless steel welded pipe welding process-ah hian chhiatna engemaw zat a awm dawn a ni. Stainless steel welded pipe chhiatna hian stress concentration a thlen ang a, bearing capacity a ti tlem ang a, service life a ti tawi ang a, brittle fracture pawh a thlen thei bawk ang. General technical regulation-ah chuan crack, penetration kim lo, fusion tling lo, leh surface slag inclusions te chu phal a ni lo tih a tarlang a Undercuts, internal slag inclusions, leh pores ang chi defect te hian allowable value engemaw zat a pel thei lo va, standard aia tam defect te chu uluk taka lakchhuah leh weld a ngai a ni. siamtha. Stainless steel welded pipe hman tlanglawn tak takte welding defect awm chhan, hlauhawm leh venna tehfungte chu a hnuaia mi ang hian tawi te tein tarlan a ni.
1. Weld size hian a mamawh a tlin lo .
Weld size hian thil mamawh a tlin lo ber a, weld reinforcement leh reinforcement difference, weld width and width difference, misalignment, post-weld deformation leh dimension dang, standards zawm lo, weld san zawng inang lo, width zau lo, leh deformation lian tak wait lian tak a kawk a ni. Weld zau zawng inmil lohna hian weld hmel chu a hmuhnawm lo mai bakah weld leh base metal inkara inzawmna (bonding strength) a nghawng bawk ang Weld reinforcement a lian lutuk chuan stress concentration a thlen ang a, weld chu base metal aia hniam a nih chuan reinforcement a hmu tlem ang. Joint chakna; Side dik lo leh deformation tam lutuk chuan force transmission a tichhe ang a, stress concentration a thlen ang a, chu chuan chakna a tlahniam ang.
A chhan: Bevel angle dik lo emaw blunt edge emaw leh stainless steel welded pipe assembly gap inang lo; welding process parameters thlan dan dik lo; Welder-a hnathawh thiamna, etc. level hniam tak.
Preventive measures: Groove angle leh assembly clearance dik tak thlang la; assembly quality tihchangtlun; Welding process parameters dik tak thlang la; Welder-a operating technology level tihchangtlun, etc.
2. Undercut .
Welding process parameter thlan dik loh vang emaw, operation process dik lo emaw a nih avangin weld toe zawh zawnga base metal melting avanga groove emaw depression emaw siam chu undercut an ti a. Undercut hian welded pipe-a welded joint chakna a tichak lo mai ni lovin, stress concentration avanga crack a thlen awlsam hle bawk.
A chhan: A bik takin current a lian lutuk a, arc a sei lutuk avangin electrode angle a dik lo a, electrode phurh dan pawh a dik lo a ni.
Preventive measures: Electrode arc welding hmanga welding hunah welding current leh welding speed dik tak thlang rawh.
A tlangpuiin, welding speed a rang zawk chuan arc chu hmalam pan turin a rei zawk ang. Arc sei zawng pangngai leh slow lova efficiency tih chian theihna tur kawng a awm em? Hangao Tech hian a pui thei che a ni. Kan mahni insiamthatna . Electromagnetic control arc stabilization system , stainless steel tube mill line hrang hrang adjust hnua a inmil thei, welding speed pangngai enkawl theihna condition hnuaiah chuan magnetic field kaltlangin arc chu normal position-ah a hruai lut a ni. Welding quality a nghawng lo a, mahse a siam chhuah thatna a tichiang bawk.
3. A luhchilh loh .
Incomplete penetration tih hian stainless steel welded pipe welded a nih chuan welded joint root chu a luhchilh vek lo tih phenomenon a kawk a ni. Penetration kim lo chuan stress concentration a thlen ang a, awlsam takin crack a thlen thei bawk ang. Welded joint pawimawh tak takte chu penetration kim lo neih phal a ni lo.
A chhan: Groove angle emaw gap emaw a tlem lutuk a, blunt edge a lian lutuk a, assembly pawh a tha lo; Welding process parameters te chu dik lo takin thlan a ni a, welding current a tlem lutuk a, welding speed pawh a rang lutuk a; Welder-a hnathawh dan hi a chhe hle a, etc.
Fimkhur dan tur: Groove size thlan leh tih dan dik, assembly tling, clearance enkawl, welding current leh welding speed dik tak thlan, welder operating technical level tihsan, etc.
4. Fused vek a ni lo .
Incomplete fusion tih hian weld bead leh base metal inkara melting leh bonding tling lo emaw fusion welding laiin weld bead leh weld bead inkar emaw a kawk a ni. Fusion awm lohna hian direct takin joint mechanical property a ti tlem a, fusion awm lohna nasa tak chuan welded structure chu a tuar thei lo tak tak ang.
A chhan: A chhan ber chu stainless steel welded pipe welding laiin speed sang leh welding current hniam vang a ni a, welding heat input a hniam lutuk a Welding rod chu eccentric a ni a, welding rod leh weldment inkar angle chu a dik lo a, arc pointing pawh a deflect a; Groove sir lam bang chungah rust leh bawlhhlawh a awm a, layer inkar ah slag tihfai kim loh a awm bawk.
Preventive measures: Welding process parameters dik taka thlan, uluk taka hnathawh, interlayer tihfai tihchak, leh welder operation skills level tihsan, etc.
5. Welding tumor .
Weld lump tih hian welding process chhunga weld pawn lama unmelted base metal-a kal, molten metal atanga siam metal lump a kawk a ni. Weld bead hian stainless steel welded pipe-a weld seam awm dan a nghawng mai bakah, weld bead awmna hmunah slag inclusions leh incomplete penetration a nei fo bawk.
A chhan: Blunt edge hi a tlem lutuk a, a zung gap pawh a lian lutuk; Welding current a lian a, welding speed pawh a rang hle a; Welder-a operating skill level a hniam a, etc.
Preventive measures: Welding process parameters dik tak welding position hrang hrang angin thlang la, fusion hole lian leh te chu khauh takin control la, welder-a operating technology level siam that, etc.
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