Ipayipi elinothayela elishisayo

Insimbi encibilikisiwe ihlangana ne-matrix yensimbi ukuze ikhiqize ungqimba lwengxubevange, ukuze i-matrix ne-coating kuhlanganiswe. I-Hot dip galvanizing iwukuba kuqala ukucosha ipayipi lensimbi, ukuze kukhishwe i-iron oxide ebusweni bepayipi lensimbi, ngemva kokukhetha, nge-ammonium chloride noma i-zinc chloride isixazululo esinamanzi noma i-ammonium chloride ne-zinc chloride exutshwe nethangi lesisombululo esinamanzi ukuze kuhlanzwe, bese kuba sethangini lokucwilisa elishisayo. I-hot dip galvanizing inezinzuzo zokuhlanganisa iyunifomu, ukunamathela okuqinile nempilo ende yesevisi. Iningi lezinqubo enyakatho zamukela inqubo yokugcwalisa i-zinc yepayipi lekhoyili eliqondile lebhande elinothayela.

Ipayipi elibandayo likathayela

Ama-cold galvanized ama-galvanized kagesi, inani lama-galvanized lincane kakhulu, kuphela i-10-50g/m2, ukumelana kwayo nokugqwala kuhluke kakhulu kunepayipi elishisayo elinothayela. Abakhiqizi bamapayipi avamile, ukuze kuqinisekiswe ikhwalithi, iningi alisebenzisi i-galvanizing kagesi (i-plating ebandayo). Yilawo mabhizinisi amancane kuphela anemishini engasebenzi asebenzisa i-galvanizing kagesi, yiqiniso, amanani abo ashibhile. Esikhathini esizayo, amapayipi ama-galvanized abandayo awavunyelwe ukusetshenziswa njengamapayipi amanzi negesi.

Ipayipi lensimbi elicwebezelayo elishisayo

Ukusabela okuyinkimbinkimbi ngokomzimba namakhemikhali kwenzeka phakathi kwe-substrate yeshubhu lensimbi kanye nokugeza okuncibilikisiwe ukuze kwakhe ungqimba oluqinile lwengxubevange ye-zinc-iron ukumelana nokugqwala. Isendlalelo se-alloy sihlanganiswe nesendlalelo se-zinc ehlanzekile kanye ne-matrix yepayipi yensimbi. Ngakho-ke, ukumelana kwayo nokugqwala kunamandla.

Ngemuva kokuthuthukiswa kwepayipi elishisayo lensimbi eminyakeni yawo-1960 kuya ko-1970, izinga lomkhiqizo liye lathuthukiswa kakhulu, ngo-1981 kuya ku-1989 waklonyeliswa uMnyango we-Metallurgical wemikhiqizo yekhwalithi ephezulu kanye nendondo yesiliva kazwelonke, ukukhiqizwa nakho kwanda iminyaka eminingi, ngo-1993 okukhiphayo okuphumayo kuka-400,000 kanye namathani angaphezu kuka-400,000, amathani angaphezu kuka-109 kuya ku-099 kuya ku-099 kuya ku-099 kuya ku-1999. INingizimu-mpumalanga ye-Asia, i-Afrika, i-United States, i-Japan, Amazwe aseJalimane nezifunda. Amapayipi kathayela odiphu oshisayo asetshenziswa kakhulu njengamapayipi amanzi namapayipi egesi, futhi imininingwane evamile ingu-+12.5~+102 mm. Ngemuva kweminyaka yawo-1990, ngenxa yokunaka kombuso ekuvikelweni kwemvelo, ukulawulwa kwamabhizinisi angcolile kuya ngokuya kuba nzima nakakhulu, "imfucumfucu emithathu" eyenziwa ekukhiqizeni amapayipi ashisayo ashisayo kunzima ukuyixazulula, okuhambisana nokuthuthukiswa okusheshayo kwamapayipi ensimbi ashiselwe, amapayipi e-PVC kanye nokusetshenziswa kwamapayipi ombuso ahlanganisiwe, kanye nokusetshenziswa kwamapayipi ombuso ahlanganisiwe, amapayipi ensimbi anemikhawulo, okwenza ukuthuthukiswa kwamapayipi ashiselwe idiphu ashiselwe kuthinteke kakhulu.

Ipayipi elibandayo lensimbi

Isendlalelo se-zinc yisimbozo sikagesi, futhi isendlalelo se-zinc sibekwe ngokuzimela nge-matrix yepayipi yensimbi. Ungqimba lwezinc luncane, futhi ungqimba lwezinc lumane lunamathiselwe ku-matrix yeshubhu lensimbi futhi kulula ukuwa. Ngakho-ke, ukumelana nokugqwala kwayo kubi. Ezakhiweni ezintsha zokuhlala, akuvunyelwe ukusebenzisa amapayipi ensimbi abandayo njengamapayipi okuhambisa amanzi.