Preheating inzira yakakosha mu butt welding michina inosanganisira kusimudza tembiricha yesimbi yekutanga isati yatanga basa rewelding. Kunzwisisa chinangwa uye mabhenefiti ekutanga kupisa kwakakosha kune welders uye nyanzvi mune welding indasitiri. Ichi chinyorwa chinoongorora kukosha kwepreheating mu butt welding muchina, ichiratidzira basa rayo mukuona kunobudirira welds uye kusimudzira weld mhando.
- Tsanangudzo yePreheating: Preheating inosanganisira kupisa simbi yepasi kune yakatarwa tembiricha renji isati yatungirwa. Iyo preheating tembiricha inotemerwa zvichienderana nerudzi rwezvinhu, ukobvu, dhizaini yekubatanidza, uye nzira yekushongedza.
- Kudzivirirwa kweKutsemuka: Chimwe chezvinangwa zvekutanga zvekupisa ndechekudzivirira kutsemuka mumubatanidzwa we weld. Preheating inoderedza tembiricha yekushisa pakati penzvimbo yeweld uye yakatenderedza base simbi, ichideredza njodzi yehydrogen-induced kuputika uye kutonhora kutsemuka.
- Stress Relief: Preheating inopawo zororo rekushushikana kune base simbi. Inobatsira kudzikisira kushushikana kwemukati kunokonzerwa neiyo welding process, kuderedza mukana wekukanganisa uye kusara kunetseka mune yekupedzisira weld.
- Kuvandudzwa kweWeld Kusimba: Nekutanga kupisa simbi yepasi, iyo weld joint inowana yakavandudza kuoma uye ductility. Izvi zvinotungamira kune welds ane yakakwira kukanganisa kuramba uye kuwedzeredzwa kwese kwemechanicha zvivakwa.
- Yakaderedzwa Hydrogen Embrittlement: Preheating inobatsira kudzikisira hydrogen embrittlement, chinova chiitiko apo maatomu ehydrogen anopararira musimbi weld, zvichiita kuti iite brittle. Iyo yakakwira tembiricha panguva yekupisa inofambisa kupukunyuka kwehydrogen, kuderedza njodzi yekuputirwa.
- Zvirinani Weld Kupinza: Preheating aids mukuwana zvirinani weld kupinda, kunyanya muzvinhu zvakakora. Iyo tembiricha yakasimudzwa inopfavisa base simbi, zvichiita kuti zvive nyore kuti welding process ipinde nemujoini.
- Kuve nechokwadi cheFusion Yakakodzera: Preheating inosimudzira fusion yakakodzera pakati pesimbi weld uye base simbi. Izvi zvinonyanya kukosha kana uchishanda neakakwira-alloy simbi uye zvimwe zvinhu zvinowanzoitika kune kushata fusion.
- Kuderedza Kupisa-Kunobatwa Nzvimbo (HAZ): Preheating inobatsira kudzora saizi yenzvimbo inobatwa nekupisa (HAZ) panguva yewelding. Iyo diki HAZ inoderedza njodzi yekuchinja kwesimbi musimbi yepasi, ichichengetedza hunhu hwayo hwepakutanga.
Mukupedzisa, preheating inotora basa rakakosha mumashini ekuisa butt nekugadzirira base simbi yewelding uye kuve nechokwadi chekubudirira welds. Iyo nzira inodzivirira kuputika, inopa zororo rekushushikana, inovandudza weld kuoma, inoderedza hydrogen embrittlement, inosimudzira weld kupinda, inosimudzira fusion yakakodzera, uye inoderedza kupisa-inokanganiswa nzvimbo. Nekunyatsoita preheating matekiniki akavakirwa pane zvakatemwa zvezvinhu uye welding maitiro, welder nenyanzvi vanogona kuwana emhando yepamusoro welds ane epamusoro mechanicha zvinhu. Kusimbisa kukosha kwepreheating kunobatsira kukwenenzvera kwebutt welding mashandiro, kukurudzira yakachengeteka uye yakavimbika simbi inojoinha mumhando dzakasiyana dzekushandisa uye maindasitiri.
Nguva yekutumira: Jul-26-2023
