Dibadda Galvanized Steel Coil leh Z275 Zinc Coating | Amal Durable ee Kooxda

Dhulka dhammaan ah ee koorada steel galvanized meelaha Z275 waxaa u diriraya salka zinc 275g/m², standard ee ka mid ah in ASTM A653/A653M iyo ku saabsan wuxuu ka heli doonaa magaalada korosiyeed ee xaq ah. Proceska galvanization carruurta ah waxaa ilaali kartaa dhulka steel carruur carruur ah ee iska soo degdegay molten zinc, si uu uga baro bond metallurgical ee banaan zinc iyo iron, oo si uu uga hor jeedo saxda ee ku jiro midka korosiyeed ee atmospheric. Waxbarashada Z275 (waxba ah G90 ee ugu yaraahda systemka U.S.) wuxuu ka mid ah coating thickness ee la mid ah ka qorayo 15 sanadka badan ee dibadda moderate climates macluumaanka degradiation. Dhibaatooyinka kiiro ah waxaa ku yaal roobaha doorashada, fencing, iyo equipmentka industrial amaas hore ee u baahan yihiin exposure ee moisture. Salka zinc wuxuu ka mid ah protection ee barrier (physical separation from environment) iyo cathodic protection (sacrificial corrosion ee zinc to protect steel substrate). Testing ee performance waxaa ku yaal salt spray exposure (ASTM B117), waxaa laga sawirayo white rust formation after 1,000+ hours. Surface preparation before galvanizing waxaa sheeg ah—degreasing iyo pickling si uu uga garan kartaa adhesion ee zinc. Advancements dheeraad ah ee alloyed zinc coatings (kan oo ah Zn Al) waxaa ku haystaan resistance ee korosiyeed furan, maanaskaas Z275 wuxuu ku jira cost effective standard ee dhammaan ee applicationka industrial.