Pombi Nhema

Chubhu ine sikweya isimbi yakareba ine mukati mayo isina chinhu. Yakawana zita rayo nekuda kwechikamu chayo chesikweya. Sezvo yakagadzirwa nesimbi, inogara kwenguva refu. Inodzivirirawo ngura, ngura, uye mavara. Chubhu idzi dzinogona kutomira kana dzasangana neacid, mvura ine munyu, uye makemikari.

Rudzi urwu rwechubhu rwakakamurwa muzvikamu zviviri — mapaipi esimbi asina musono uye mapaipi esimbi akasungirirwa. Sezvinoreva zita rayo, pombi yesimbi isina musono ine chimiro chakapfava uye chisina kuvharwa uye haina welds pamusoro. Panguva iyi, pombi yesimbi yakasungirirwa ine plate yesimbi yakakombama yakasungirirwa kuita chimiro chesikweya, zvichiita musono pamuviri wepombi.

Maitiro ekusonta epaipi ye erw ndekushandisa musimboti wekugamuchira ganda unogadzirwa ne high-frequency current kupisa mupendero we hot-rolled coil kusvika yanyunguduka, wobva waita welding nenzira ye mechanical extrusion. Pombi yesimbi inogadzirwa nemaitiro aya ichave ne white fusion line pakati pe weld, uye nzvimbo inokanganiswa nekupisa kumativi ese e fusion line ichave ne simbi inoyerera kubva pakati kusvika mukati nekunze. Sezvo pombi ye erw yakagadzirwa ne base material se welding material, mashandiro e weld seam ane hukama hwakanaka nekushanda kwe base material. Muzvinhu zvakajairika, ductile-brittle transition temperature curve ye weld ne base metal. Muzvinhu zvakajairika, musiyano we absorbed energy values ​​pakati pe weld ne base material mu Charpy impact test mudiki. Kusiyana neizvi, pane musiyano mukuru mu high toughness material, uye weld impact toughness iri pachena yakaderera pane base metal, asi zviri pachena kuti iri nani pane weld yezvinhu zvakajairika.