Kushushikana kwasara kweLSAW pombi kunonyanya kukonzerwa nekutonhodza kusina kuenzana.Residual stress is the internal self phase equilibrium stress pasina simba rekunze.Uku kushushikana kwasara kuripo muzvikamu zvinopisa zvakakungurutswa zvezvikamu zvakasiyana.Iyo yakakura saizi yechikamu che general chikamu simbi, iyo yakakura yekusarira kunetseka.
Kunyangwe kushushikana kwasara kuri kuzvienzanisa, kuchiri kune imwe mhedzisiro pakuita kwenhengo dzesimbi pasi pesimba rekunze.Semuenzaniso, inogona kuva nemigumisiro yakaipa pa deformation, kugadzikana uye kuneta kuramba.Mushure mekuputika, iyo isiri-metallic inclusions muLSAW pombi inotsikirirwa kuita mashizha matete, zvichiita kuti lamination.Ipapo iyo lamination inokanganisa zvakanyanya kushanda kweLSAW pombi parutivi rweukobvu, uye kubvaruka kwepakati kunogona kuitika kana weld yadzikira.Kuomarara kwenzvimbo kunokonzereswa ne weld shrinkage kazhinji kakati wandei kwegoho point strain, iyo yakakura kudarika iyo inokonzerwa nemutoro.Pamusoro pezvo, pombi yeLSAW ichange iine maT-welds akawanda, saka mukana wekuremara kwewelding unovandudzwa zvakanyanya.Uyezve, iyo welding yakasara kunetseka paT-weld yakakura, uye iyo weld simbi inowanzove iri mumamiriro matatu-dimensional kushushikana, izvo zvinowedzera mukana wekutsemuka.
Iyo welding seam ye spiral undermerged arc welded pombi inogoverwa mumutsara we spiral, uye ma welds akareba.Kunyanya kana welding pasi pemamiriro ekuchinja, weld inosiya nzvimbo yekugadzira isati yatonhodza, izvo zviri nyore kugadzira welding inopisa mitswe.Iyo yekutsemuka nzira inofambirana neye weld uye inoita kona inosanganisirwa nesimbi pombi axis, kazhinji kutaura, kona iri pakati pe30-70 °.Iyi kona inongoenderana neiyo shear yekutadza kona, saka kukotama kwayo, kusimba, kudzvanya uye anti-twist zvimiro hazvina kunaka seLSAW pombi.Panguva imwecheteyo, nekuda kwekuganhurwa kwenzvimbo yewelding, saddle nehove ridge welding seam inokanganisa chitarisiko.Naizvozvo, iyo NDT yeSSAW pombi welds inofanirwa kusimbiswa kuti ive nechokwadi chekushongedza mhando, zvikasadaro SSAW pombi haifanirwe kushandiswa mune yakakosha simbi magadzirirwo zviitiko.
Nguva yekutumira: Jul-13-2022