Ipayipi Elishiselwe Ngensimbi
Ukuze kuthuthukiswe ukumelana nokugqwala kwamapayipi ensimbi, amapayipi ensimbi ajwayelekile ayakhanyiswa. Amapayipi ensimbi akhiwe ngensimbi ahlukaniswe abe izinhlobo ezimbili: i-hot-dip galvanizing kanye ne-electro-galvanizing. I-hot-dip galvanizing layer iwugqinsi, izindleko ze-electro-galvanizing ziphansi, futhi ubuso abushelelezi kakhulu.
Ipayipi elishiselwe elifutha umoya-mpilo: Isetshenziswa njengepayipi elifutha umoya-mpilo elenza insimbi, ngokuvamile amapayipi ensimbi anobubanzi obuncane, anezici eziyisishiyagalombili ezisuka ku-3/8 kuya ku-2 amayintshi. Yenziwe ngensimbi engu-08, 10, 15, 20 noma engu-195-Q235, ukuze kuvinjelwe ukugqwala, kuyadingeka ukwenza ukwelashwa kwe-alumizing.
Izindlu eziningi ezindala zisebenzisa amapayipi anathayela. Amapayipi ensimbi asetshenziselwa igesi kanye nokufudumeza nawo angamapayipi. Amapayipi anamathangi asetshenziswa njengamapayipi amanzi. Ngemva kweminyaka embalwa yokusetshenziswa, ukugqwala nokungcola okuningi kukhiqizwa emapayipini, futhi amanzi aphuzi aphumayo awagcini nje ngokungcolisa i-sanitaryware. , Futhi exutshwe namagciwane azalela odongeni lwangaphakathi olungalingani, ukugqwala kubangela okuqukethwe kwensimbi esindayo ngokweqile emanzini, okufaka impilo yomuntu engozini. Ngeminyaka yawo-1960 kanye nawo-1970, amazwe athuthukile emhlabeni aqala ukwakha izinhlobo ezintsha zamapayipi futhi kancane kancane avala amapayipi anamathani. Ongqongqoshe namakhomishini amane okuhlanganisa nowezokwakha eChina nawo akhiphe umqulu ocacisa ukuthi amapayipi kathayela avaliwe kusukela ngo-2000 kuya phambili. Amapayipi anothayela awavamisile ukusetshenziselwa amapayipi amanzi abandayo emiphakathini esanda kwakhiwa ngemuva kuka-2000, kanti amapayipi anothayela asetshenziselwa amapayipi amanzi ashisayo kweminye imiphakathi.
Ubukhulu bodonga lokuzisholo mm 2.0 2.5 2.8 3.2 3.5 3.8 4.0 4.5
Amapayipi ensimbi ahlukene ahlukene abe amapayipi abandayo namapayipi anothayela adiphu ashisayo. Owokuqala uvinjelwe, futhi owakamuva ukhuthazwe wumbuso ukuthi usetshenziswe okwesikhashana.
Ipayipi elinothayela elishisayo
Ipayipi elinothayela lediphu elishisayo elokwenza insimbi encibilikisiwe kanye ne-iron matrix kusabela ukuze kukhiqizwe ungqimba lwengxubevange, ukuze i-matrix kanye nokunamathela kuhlanganiswe. I-hot-dip galvanizing iwukuba ugqume ipayipi lensimbi kuqala. Ukuze kukhishwe i-iron oxide ebusweni bepayipi lensimbi, ngemva kokuchotshozwa, ihlanzwa ethangini le-ammonium chloride noma i-zinc chloride isixazululo samanzi noma isixazululo esinamanzi esixubile se-ammonium chloride ne-zinc chloride, bese sithunyelwa ku-In. ithangi le-dip plating elishisayo. I-hot-dip galvanizing inezinzuzo zokugqoka okufanayo, ukunamathela okuqinile nokuphila isikhathi eside.
Ipayipi elibandayo elinothayela
I-cold galvanizing i-electro-galvanizing, futhi inani lokufaka uthayela lincane kakhulu, kuphela i-10-50g/m2, futhi ukumelana nokugqwala kwayo kubi kakhulu kunamapayipi afaka amanzi ashisayo. Iningi labakhiqizi bamapayipi abavamile abalisebenzisi i-electro-galvanized (i-cold plating) ukuze baqinisekise ikhwalithi. Yilawo mabhizinisi amancane kuphela anemishini emincane nephelelwe yisikhathi asebenzisa i-electro-galvanization, futhi vele amanani awo ashibhe uma kuqhathaniswa. UMnyango Wezokwakha umemezele ngokusemthethweni ukuthi amapayipi anothayela ababandayo anobuchwepheshe obuphelelwe yisikhathi kufanele aqedwe, namapayipi anazinti abandayo ngeke avunyelwe ukuthi asetshenziswe njengamapayipi amanzi negesi esikhathini esizayo.
Ipayipi lensimbi elidiphu elishisayo: I-matrix yepayipi lensimbi ibhekana nokusabela okuyinkimbinkimbi ngokomzimba namakhemikhali nesixazululo sokucwenga esincibilikisiwe ukuze kwakhe ungqimba lwengxube ye-zinc-iron engagqwali enesakhiwo esihlangene. Isendlalelo se-alloy sihlanganiswe nesendlalelo se-zinc ehlanzekile kanye ne-matrix yepayipi yensimbi. Ngakho-ke, ukumelana kwayo nokugqwala kunamandla.
Ipayipi lensimbi elibandayo:Isendlalelo se-zinc yisingqimba se-electroplated, futhi isendlalelo se-zinc kanye ne-substrate yepayipi yensimbi kufakwe ngokuzimela. Isendlalelo se-zinc sincane, futhi ungqimba lwe-zinc lumane lunamathele ku-substrate yepayipi yensimbi futhi kulula ukuwa. Ngakho-ke, ukumelana nokugqwala kwayo kubi. Ezindlini ezisanda kwakhiwa, akuvunyelwe ukusebenzisa amapayipi ensimbi abandayo njengamapayipi okuhambisa amanzi.
Inqubo yokukhiqiza insimbi engagqwali inezinyathelo ezilandelayo zokukhiqiza:
a. Ukulungiswa kwensimbi eyindilinga; b. Ukushisisa; c. Ukubhoboza okugoqiwe okushisayo; d. Sika ikhanda; e. Ukukha f. Ukugaya; g. Ukuthambisa; h. Cold rolling processing; i. Ukunciphisa amafutha; j. Ukwelashwa kokushisa kwesixazululo; k. Ukuqondisa; l. Sika ithubhu; m. Ukukha n. Ukuhlolwa komkhiqizo.
Nikeza kuphela inqubo evamile, futhi enemininingwane eyengeziwe ingeyezimfihlo zomkhiqizi ngamunye
1. Ukwakheka kwamakhemikhali namakhemikhali
Ibanga kanye nokwakheka kwamakhemikhali ensimbi yamapayipi ensimbi kufanele kuhambisane nebanga kanye nokwakheka kwamakhemikhali ensimbi yamapayipi amnyama ashiwo ku-GB 3092.
2. Indlela yokukhiqiza
Indlela yokukhiqiza yepayipi elimnyama (i-welding yesithando somlilo noma i-welding kagesi) ikhethwa ngumkhiqizi. I-hot-dip galvanizing isetshenziselwa ukuvuthela.
3. Imicu namapayipi ahlangene
3.1 Emapayipini ensimbi athathiwe alethwe ngemicu, izintambo kufanele zenziwe ngomshini ngemva kokufaka uthayela. Uchungechunge kufanele luhambisane nemithetho ye-YB 822.
3.2 Izihlanganisi zamapayipi ensimbi kufanele zihambisane ne-YB 238; amalunga epayipi lensimbi elithambile elithambile kufanele ahambisane ne-YB 230.
4. Izakhiwo zikagesi Izakhiwo zokuwumshini zamapayipi ensimbi ngaphambi kokuvuthwa kufanele zihlangabezane nezidingo ze-GB 3092.
5. Ukufana kwesendlalelo se-galvanized Ipayipi lensimbi elakhiwe kufanele lihlolwe ukufana kongqimba oluvunyiwe. Isampula yepayipi yensimbi akufanele iphenduke ibe bomvu (umbala ohlanganiswe ngethusi) ngemva kokucwiliswa kusixazululo se-copper sulfate izikhathi ezi-5 ezilandelanayo.
6. Ukuhlolwa kokugoba okubandayo Ipayipi lensimbi eliwuthayela elinobubanzi obungadluli ku-50mm kufanele lihlolwe ngokugoba okubandayo. I-engeli yokugoba ingu-90°, futhi i-radius egobayo iphinda izikhathi ezingu-8 ububanzi bangaphandle. Akukho ukugcwalisa ngesikhathi sokuhlolwa, futhi i-weld yesampula kufanele ibekwe ngaphandle noma engxenyeni engenhla yesiqondiso sokugoba. Ngemuva kokuhlolwa, akufanele kube nokuqhekeka nokuxebuka kwesendlalelo se-zinc kusampula.
7. Ukuhlolwa kwengcindezi yamanzi Ukuhlolwa kwengcindezi yamanzi kufanele kwenziwe ku-clarinet. Ukutholwa kwephutha lamanje kwe-Eddy nakho kungasetshenziswa esikhundleni sokuhlolwa kwengcindezi yamanzi. Ingcindezi yokuhlola noma usayizi wesampula yokuqhathanisa yokuhlolwa kwamanje kwe-eddy izohlangabezana nezidingo ze-GB 3092.
