Induction kupisa welding seam kupisa kurapwa nzira

Pipeline simbi ndiyo huru mhando yesimbi ine welds inoda kupisa kurapwa kuti ivandudze michina zvinhu. Masimbi anoshandiswa mumhando dzakasiyana-siyana dzesimbi magiredhi uye zvavanoda zvesimba tembiricha yekamuri zvakanyorwa muTebhu 6-2. Kubva pamhando dzesimbi uye midziyo yemagetsi yakanyorwa muTebhu 6-2, nzira huru dzekupisa kupisa dzekuvandudza kushanda kwese welds dzinosanganisira normalizing treatment, normalizing + tempering treatment, quenching + tempering treatment uye dzimwe nzira. Parizvino, iyo weld normalizing kurapwa inonyanya kushandiswa mukugadzirwa kwemumba welded pombi, uye dzimwe nzira dzekurapa kupisa hadzisati dzagamuchirwa. Iyo yakanyanya yepamusoro weld kupisa kurapwa ndeye quenching uye tempering kugadzira mutsara. Normalizing kurapwa kunonyanya kushandiswa muhombe-mwero welded pombi kugadzira mitsetse kunze, uye quenching uye tempering kurapwa rinongoshandiswa chete makambani muJapan uye European Union. Induction kudziyisa kudzimisa uye kupisa kurapwa kwewelds ndiyo nhungamiro yekuvandudza mune ramangwana.

Tafura 6-2 Yakajairwa simbi giredhi uye kamuri tembiricha simba repombi simbi

(1) Weld induction heat normalizing treatment inosanganisira annealing treatment, dzimwe nguva inonzi stress relief annealing. Iyo induction heat normalizing process ye weld ndeyekupisa weld kune tembiricha iri pamusoro peAe, uyezve mhepo-yakatonhodzwa kusvika pazasi 400 °C uye mvura-inotonhorera kusvika kukamuri tembiricha mushure me900 ~ 950 ° C. Nenzira iyi, kushushikana kwemukati we welding kunobviswa, tsanga ye weld inonatswa, iyo microstructure inovandudzwa, uye plastiki uye kukanganisa kuoma kwe weld kunovandudzwa. Weld induction heat normalizing treatment inokodzera yakajairwa yakaderera-alloy simbi uye mamwe akaderera-alloy high-simba simbi, akaenzana ne welded pombi pazasi X60 simbi giredhi. Iyo welding seam induction heat annealing treatment ndeyekupisa welding seam kusvika 700 ~ 750 ° C dual-phase zone, uyezve mhepo-yakatonhodzwa kusvika kukamuri tembiricha, chinangwa ndechekubvisa kushushikana kwemukati kwewelding uye kugadzirisa plastiki. Annealing kurapwa inonyanya kushandiswa kwekabhoni simbi uye mamwe akajairwa akaderera-alloy simbi welded pombi. Iyi maitiro haawanzo shandiswa mudzimba welded pombi yekugadzira mitsetse.

(2) Weld induction heat normalizing + tempering treatment Mushure mekurapa kwakajairika, kana kuomarara kweweld kuchiri kwakakwira uye plastiki ichiri yakaderera, tembiricha yekupisa yekupisa inogona kushandiswa kuigadzirisa. Induction kudziyisa uye kupisa ndeyekupisa weld kune tembiricha iri pasi peAd, kazhinji kutenderera 650 ℃ uyezve kutonhodzwa nemhepo. Mushure mekupisa kwekushisa kwakanyanya, martensite chimiro musimbi yakasvibirira inoshandurwa kuita sorbite yakadzikama uye ferrite, plastiki ye weld inovandudzwa, kuoma kunoderedzwa, uye simba rinoshanduka zvishoma. gumi iyi kupisa kurapwa nzira, inozivikanwawo se quenching, quenching uye induction kudziyisa mutsetse weld kupisa kurapwa ndiyo yepamusorosoro tekinoroji. Mushure mekudzima uye kudziya, iyo yakazara mechanical zvimiro zvewelding seam inosvika zvachose pamwero wepombi muviri, ichiona kufanana kweiyo welding seam uye kuita kwemuviri wepombi. Nheyo yeiyi tekinoroji yekurapa tekinoroji ndeyekuziva iyo inotenderera magineti yekudziya tekinoroji kuti ive nechokwadi chekufanana uye nekurongeka kwekupisa kwekudziya. Kune yakaderera-alloy yakakwirira-simba simbi uye micro-yakagadzirwa yakakwirira-simba simbi welds, kudzima tembiricha yekupisa i900 ~ 950 ℃, tembiricha yekudziya yekupisa i600 ~ 650 ° C, kudzima kunotora kutonhora kwepfapfaidzo, uye kupisa kunotora mweya. kutonhora uye kutonhora kwemvura. Batanidza kutonhora. Kana tembiricha yekudzima uye yekudziya ichidziya neakareba magineti, iko kurongeka kwekudzora tembiricha kunogona kusvika ± 10 ° C, inova ndiyo inodiwa tembiricha yekudzora nhanho yemapombi ane simba-akakwira kuti arambe akagadzikana. Kushandisa transverse munda kudziyisa welds kunodawo yakakwirira nemazvo tembiricha kudzora • parizvino • China ichiri kukura padanho, kubva chokwadi musiyano mukuru uyu. Nekudaro, zvinotendwa kuti iyi tekinoroji yekudziya ichakurumidza kukundwa, uye iyo weld seam ichapiswa uye kupiswa ne-on-line induction kupisa.