Juya Rufin Galvanized Karfe

Iron phosphates ko kayan tsaftacewa mai tsabta suna samar da ƙaramin juzu'in juzu'i a saman tutiya. Yawancin layukan gamawa da yawa suna amfani da gyare-gyaren ƙarfe phosphates waɗanda ke ba da tsaftacewa, kuma suna barin ƙananan sinadarai a kan abubuwan zinc don samar da kaddarorin mannewa.

Yawancin gundumomi da jahohi yanzu suna da iyaka akan PPMs na zinc, suna tilasta masu kammala ƙarfe don ba da magani ga duk wani mafita da ake sarrafa abubuwan da ke cikin zinc.

Rubutun tubalin zinc phosphate shine, watakila, mafi kyawun kayan shafa wanda za'a iya samarwa akan shimfidar galvanized. Don samar da suturar zinc phosphate akan galvanized, ana buƙatar wakilai na gaggawa na musamman don kunna saman da kyau don karɓar murfin zinc phosphate. Wadannan suturar an halicce su ta hanyar aikin sinadarai na wanka a kan kayan saman. Zinc phosphate crystalline shine ainihin "girma" akan tsaftataccen wuri mai tsabta. A cikin rukuni bakwai na zinc phosphating na yau da kullun, matakai daban-daban sune:

1. Mai tsabtace alkaline.
2. Mai tsabtace alkaline.
3. Kurkure ruwan zafi.
4. Maganin sarrafa sinadarin Zinc phosphate.
5. Ruwan sanyi kurkura.
6. Bayan jiyya (ko dai chromium ko nau'in nonchromium).
7. Deionized ruwa kurkura.

Nau'in mataki na shida zai kawar da mataki na 1, kuma kashi biyar zai kawar da matakai na 1 da 7. A cikin hanyar yin amfani da wutar lantarki, an dakatar da sassan da za a rufe a cikin rami yayin da aka fitar da bayani daga tanki mai riƙewa. kuma an fesa a ƙarƙashin matsin lamba akan sassan. Maganin shafawa yana ci gaba da sake sakewa.A cikin hanyar nutsewa na aikace-aikacen, sassan da za a shafe bayan an tsaftace su kawai suna nutsewa a cikin wani bayani na maganin phosphating wanda ke kunshe a cikin tankin karfe. Fasaha shafi canza.Phosphate coatings yawanci amfani da ta amfani da biyar, shida, ko bakwai matakai. Ana gudanar da maganin phosphate a cikin kewayon zafin jiki na 100 zuwa 160 ° F (38 zuwa 71 ° C) don fesa; 120 zuwa 200F (49 zuwa 93 ° C) don nutsewa; ko zafin dakin don shafa hannu. Nauyin murfin zinc phosphate da aka yi amfani da shi yakamata ya zama 150 zuwa 300 mg./sq. ft.A lokacin aiki na 30 zuwa 60 seconds ta hanyar fesa da 1 zuwa 5 mintuna ta nutsewa ya saba. shafi ne mai yiwuwa daya daga cikin mafi kyau fenti tushe coatings on galvanized karfe. Maganin sarrafa kayan aikin chromium phosphate baya samar da fenti mai tushe mai dacewa akan karfe galvanized.