Galvanized Pipe
The process flow is:dema chubhu-alkaline washing-mvura washing-pickling-mvura rinsing-kunyorova rubatsiro-kuomesa-hot dip galvanizing-external blowing-internal blowing-air cooling-water cooling -Passivation-water rinsing-inspection-weighing-storage.
1, Brand uye makemikari kuumbwa
Giredhi uye kemikari yesimbi yepombi dzesimbi dzesimbi dzinofanirwa kuenderana negiredhi uye kemikari yesimbi yemapombi matema sezvakatsanangurwa muGB/T3091.
2, Manufacturing nzira
Nzira yekugadzira pombi yakasviba (furnace welding kana electric welding) inosarudzwa nemuiti.Kupisa-dip galvanizing inoshandiswa kugadzira galvanizing.
3. Thread and pipe joint
(a) Papombi dzesimbi dzakaiswa galvanized neshinda, shinda dzinofanirwa kugadzirwa mushure mekurudziro.Iyo tambo inofanirwa kuenderana neYB 822 mirau.
(b) Majoini epombi esimbi anofanira kuenderana neYB 238;majoini epombi yesimbi anogadzika anofanira kuenderana neYB 230.
4. Mechanical properties Mamichanicha epombi dzesimbi asati aita galvanizing anofanirwa kusangana nezvinodiwa zveGB 3091.
5. Uniformity yegomba remarata Pombi yesimbi yegorofu inofanirwa kuongororwa kuti inoenderana here.Sampuli yepombi yesimbi haifanire kutsvuka (copper-plated) mushure mekunyudzwa mumhangura sulfate mhinduro ye5 nguva dzakateedzana.
6, Cold bend test galvanized simbi pombi ine dhayamita yezita isingapfuuri 50mm inofanira kutonhora bend test.Kona yekubhenda i90 °, uye radius yekukotama ndiyo kasere yedhayamita yekunze.Iko hakuna yekuzadza panguva yekuyedzwa, uye weld yemuenzaniso inofanira kuiswa kunze kana kumusoro kwenzvimbo yekukotama.Mushure mekuedzwa, hapafanirwe kuve nekutsemuka uye peeling ye zinc layer pane sampuli.
7, Mvura yekumanikidza bvunzo Muedzo wekumanikidza mvura unofanirwa kuitiswa mu clarinet, uye eddy ikozvino yekuyedza inogona kushandiswawo panzvimbo yemvura yekumanikidza bvunzo.Kudzvanywa kwekuyedza kana saizi yekuenzanisa sampuli yeeddy ikozvino yekuyedza ichasangana nezvinodiwa zveGB 3092. Iyo mechanical zvimiro zvesimbi zviratidzo zvakakosha kuti ive nechokwadi chekupedzisira kushandiswa kwekuita (mechanical properties) yesimbi.
①Kusimba kwesimba (σb):Iyo yakanyanya simba (Fb) inotakurwa nesample painotsemuka panguva yekutambanudza, yakakamurwa nekunetsekana (σ) kunowanikwa nekukamura iyo yekutanga muchinjiko-chikamu nzvimbo (Saka) yemuenzaniso, inodaidzwa kupikisa Tensile simba (σb) , chikamu iN/mm2 (MPa).Inomiririra kugona kwakanyanya kwesimbi zvinhu kuramba kukuvara pasi pesimba rekumanikidza.Muchirevo: Fb-simba guru iro muenzaniso unotakura kana waputsika, N (Newton);Saka-iyo yepakutanga muchinjika-chikamu nzvimbo yemuenzaniso, mm2.
②Poindi yegoho (σs):Kune simbi yesimbi ine chiitiko chegoho, kushushikana uko sampu inogona kuenderera kurebesa pasina kuwedzera simba panguva yekutambanudza kunonzi goho point.Kana simba richidonha, mapoinzi epamusoro uye epasi anofanirwa kusiyaniswa.Iyo unit yegoho poindi iN/mm2 (MPa).Upper Yield Point (σsu): Kunyanya kushushikana pamberi pemuenzaniso unobereka uye simba rinodonha kekutanga;Yakaderera Goho Point (σsl): Iko kushoma kushushikana muchikamu chegoho kana yekutanga yenguva pfupi mhedzisiro isina kuverengerwa.Ikoko: Fs--goho simba (nguva dzose) panguva yekusimba kwemuenzaniso, N (Newton) Saka--iyo yepakutanga-chikamu-chikamu chechikamu chemuenzaniso, mm2.
③ Kureba mushure mekutyoka:(σ) Muchiyedzo chekuyera, chiyero chehurefu hwehurefu hwegeji yakawedzera mushure mekunge sampu yatyorwa kusvika pakureba kwekutanga inonzi elongation.Inoratidzwa ne σ, iyo unit ndeye%.Muchigadziro: L1-yegeji urefu hwemuenzaniso mushure mekuputsika, mu mm;L0-yekutanga geji kureba kwemuenzaniso, mumm.
④ Kuderedzwa kwenzvimbo:(ψ) Muchiyedzo chekugadzirisa, chikamu chekudzikisa kwakanyanya kwepamuchinjikwa-sectional nzvimbo pane yakaderedzwa dhayamita yemuenzaniso mushure mekunge sampu yaputsika kune yepakutanga-chikamu chechikamu chinonzi kuderedzwa kwenzvimbo.Inoratidzwa mu ψ, iyo unit i %.Mune fomula: S0-iyo yekutanga muchinjiko-chikamu nharaunda yemuenzaniso, mm2;S1-iyo yakaderera-muchinjika-chikamu nzvimbo pane yakaderedzwa dhayamita yemuenzaniso mushure mekunge yatyoka, mm2.
⑤ Hurema indekisi:Kugona kwezvinhu zvesimbi kupikisa kupinza kwezvinhu zvakaoma pamusoro pepamusoro kunonzi kuoma.Zvinoenderana neakasiyana maitiro ekuyedza uye chiyero chekushandisa, kuomarara kunogona kukamurwa kuita Brinell kuomarara, Rockwell kuomarara, Vickers kuomarara, Shore kuomarara, kuomarara kudiki uye kuomarara kwakanyanya.Kune matatu mapaipi anowanzo shandiswa: Brinell, Rockwell, uye Vickers kuoma.
Brinell kuoma (HB):Shandisa bhora resimbi kana cemented carbide bhora rine imwe dhayamita kuitsikirira pamusoro pesample neyakatsanangurwa bvunzo simba (F), bvisa iro simba rekuyedza mushure menguva yakatarwa yekubata, uye kuyera iyo indentation dhayamita pamusoro peiyo. muenzaniso (L).Iyo Brinell kuomarara kukosha ndiyo quotient inowanikwa nekupatsanura simba rekuyedza nenzvimbo yakatenderedzwa yenzvimbo yekumisikidza.Inoratidzwa muHBS (bhora resimbi), iyo unit iN/mm2 (MPa).
