Iyo welding process ye-high-frequency welded steel pombi (erw) inoitwa pasi pemamiriro ekukurumidza kupisa mwero uye yakanyanya kutonhora mwero. Iko kukurumidza kuchinja kwekushisa kunokonzeresa kumwe kusungirira kushushikana, uye chimiro che weld chinoshanduka zvakare. Chimiro munzvimbo yewelding centre pamwe chete neweld is Low-carbon martensite uye diki nzvimbo yemahara ferrite; nzvimbo yekushandura inoumbwa neferrite uye granular pearlite; uye chimiro chemubereki chiri ferrite uye pearlite. Nokudaro, kushanda kwepombi yesimbi kunokonzerwa nemusiyano pakati pe metallographic microstructure ye weld uye muviri wemubereki, izvo zvinotungamirira mukuwedzera kwesimba index ye weld, nepo plasticity index inoderera, uye kushanda kwemaitiro kunoderera. Kuti uchinje mashandiro epombi yesimbi, kurapwa kwekupisa kunofanirwa kushandiswa kubvisa musiyano wemicrostructure pakati peiyo weld uye simbi yemubereki, kuitira kuti zviyo zvakakora zvicheneswe, chimiro chakafanana, kushushikana kunoitwa panguva yekutonhora kuumbwa uye kukwenenzvera. inobviswa, uye kunaka kwe weld uye pombi yesimbi inovimbiswa. Tekinoroji uye michina zvivakwa, uye chinja kune zvinodiwa zvekugadzira zveinotevera kutonhora kushanda maitiro.

Kune anowanzo marudzi maviri emhando yekurapa kupisa kweiyo chaiyo welded pombi:

(1) Annealing: Inonyanya kubvisa iyo welding kusagadzikana mamiriro uye kushanda kuomesa chiitiko uye kuvandudza weld plasticity ye welded pombi. Kupisa kwekushisa kuri pasi pechikamu chekuchinja.
(2) Normalizing (normalizing treatment): Inonyanya kuvandudza inhomogeneity yemagetsi emagetsi epombi yakashongedzwa, kuitira kuti michina yesimbi yemubereki uye simbi pa weld yakafanana, kuitira kuvandudza simbi microstructure. uye unatse zviyo. Iyo tembiricha yekudziya inotonhorera-mhepo pane imwe nzvimbo iri pamusoro pechikamu chekuchinja.

Zvinoenderana nezvinodiwa zvakasiyana-siyana zvekushandisa kweiyo chaiyo welded pombi, inogona kukamurwa kuita weld kupisa kurapwa uye kupisa kwese kurapwa.

1. Weld kupisa kurapwa: inogona kukamurwa kuita online kupisa kurapwa uye offline kupisa kurapwa

Weld seam heat treatment: Mushure mekunge pombi yesimbi yaiswa welded, seti yepakati frequency strip induction heat zvishandiso zvinoshandiswa pakupisa kupisa pamwe neaxial kutungamira kweiyo weld seam, uye dhayamita yakaenzana saizi mushure mekutonhora kwemhepo uye kutonhora kwemvura. Iyi nzira inongopisa iyo weld nzvimbo, haibatanidzi simbi chubhu matrix, uye inotarisira kuvandudza weld chimiro uye kubvisa welding kushushikana, pasina chikonzero chekugadzirisa moto wekupisa. Iyo welding seam inopisa pasi pe sensor rectangular. Chishandiso ichi chine otomatiki yekuronda mudziyo wekuyera tembiricha. Kana iyo welding seam yadzoserwa, inogona otomatiki pakati uye kuita tembiricha muripo. Inogona zvakare kushandisa welding tsvina kupisa kuchengetedza simba. Iyo yakanyanya kukanganisa inzvimbo yekudziya. Kusiyana kwekushisa nenzvimbo isina kupisa kunogona kutungamirira kune zvakakosha zvakasara kushungurudzika, uye mutsara wekushanda wakareba.

2. Kurapa kwekupisa kwese: kunogona kukamurwa kuita online kupisa kurapwa uye kunze kwemhepo kupisa kurapwa

1) Online kupisa kurapwa:

Mushure mekunge pombi yesimbi yaiswa welded, shandisa maviri kana anopfuura seti yepakati frequency mhete induction yekudziya midziyo yekudziya iyo pombi yese, kupisa kusvika kune tembiricha inodiwa kuti igadziriswe munguva pfupi ye900-920 ° C, ichengete kwenguva yakati. yenguva, uye wozoitonhodza nemhepo kusvika pasi pe400 °C. Kutonhora kwakajairika, kuitira kuti iyo yese tube sangano inovandudzwa.

2) Kupisa kurapwa mune off-line normalizing choto:

Yese yekupisa kupisa mudziyo we welded pombi inosanganisira chamber choto uye roller hearth choto. Nitrogen kana hydrogen-nitrogen yakasanganiswa gasi inoshandiswa semhepo inodzivirira kuti isawane oxidation kana mamiriro akajeka. Nekuda kwekushomeka kwekugadzirwa kwemagetsi emakamuri emakamuri, roller hearth mhando inoenderera mberi yekupisa yekurapa mavira ari kushandiswa parizvino. Hunhu hwekupisa kupisa kwese ndeiyi: panguva yekurapa, hapana mutsauko wekushisa mumadziro echubhu, hapana kusara kunetseka kunogadzirwa, kupisa uye kubata nguva inogona kugadziridzwa kuti ienderane kune yakanyanya kuomarara kupisa kupisa kutsanangurwa, uye iyo. inogona zvakare kudzorwa otomatiki nekombuta, asi iyo roller yepasi mhando. Midziyo yechoto yakaoma uye mutengo wekushandisa wakakwira.