At present, the most effective and practical anti-rust method is hot-dip galvanized guardrail. That is to say, zinc-iron alloy layer and pure zinc layer are formed on the surface of molten zinc iron guardrail to isolate the chance of oxidation of iron workpiece. The anti-rust period is more than 20 to 50 years, during which no maintenance is carried out. It is safe and reliable. It is the best anti-rust method for cast iron workpieces.

　　熱鍍鋅工藝流程

　　Hot dip galvanizing process

　　1. 酸洗前檢查并處理

　　1. Check and deal with before pickling

　　檢查鐵制工件是否有工藝孔(排氣、取用鋅夜、懸掛)，鐵制工件表面腐蝕程度，表面覆蓋物可用鹽酸除去(如油漆、油脂等應采用防火、打磨、堿洗等方法除去)。

　　Check whether there are process holes (exhaust, zinc night, suspension) in iron workpiece, the corrosion degree of iron workpiece surface, and the surface covering can be removed by hydrochloric acid (such as paint, grease, etc. should be removed by fire prevention, polishing, alkali washing, etc.).

　　2. 脫脂(堿性洗滌)

　　2. Degreasing (alkaline washing)

　　配備加熱設備，消除工件表面的鐵油脂、油漆等。

　　Equipped with heating equipment to eliminate the iron grease and paint on the surface of the workpiece.

　　3.

　　Three

　　從鐵制工件表面除去堿水和附件。

　　Remove alkali water and accessories from the surface of iron workpieces.

　　4,酸洗

　　4. pickling

　　清除銹跡、水垢和其他表面覆蓋物

　　Remove rust, scale and other surface coverings

　　5.酸洗后檢查及處理:

　　5. Inspection and treatment after pickling:

　　酸洗效果是否理想，如果酸洗不夠充分，再酸洗一次，如果酸洗前處理不徹底，再酸洗一次后再處理。

　　Whether the pickling effect is ideal, if the pickling is not enough, pickling again, if the pretreatment before pickling is not complete, pickling again after treatment.

　　6.從鐵制工件表面除去酸性水和其他附著物
                              

　　6. Remove acidic water and other attachments from the surface of iron workpieces

　　7.上層助鍍劑

　　7. Super plating AIDS

　　再次清洗工件表面，確保鍍鋅前工件表面不生銹。

　　Clean the workpiece surface again to ensure that the workpiece surface is not rusty before galvanizing.

　　8.干燥

　　8. Drying

　　提高鐵質工件的溫度，避免鐵質工件表面水分過多，鍍鋅時發(fā)生爆炸。

　　Raise the temperature of iron workpiece, avoid excessive moisture on the surface of iron workpiece and explosion when galvanizing.

　　9.熱浸鋅

　　9. Hot dipping zinc

　　工件在440℃-470℃熔融鋅液中浸泡，達到一定時間后，工件表面得到一層鋅及鐵合金層和純鋅層鍍層。

　　The workpiece was immersed in molten zinc solution at 440 - 470 C. After a certain time, a layer of zinc and ferroalloy coating and pure zinc coating were obtained on the workpiece surface.

　　10.鈍化

　　10. Passivation

　　提供工件表面對大氣的耐腐蝕性，減少或延長白銹的時間。

　　Provide corrosion resistance of workpiece surface to atmosphere, reduce or prolong white rust time.

　　11.冷卻

　　11. Cooling

　　防止工件受冷收縮，組織集體開裂。

　　Prevent the cold shrinkage of the workpiece and the collective cracking of the organization.

　　12.完成

　　12. Completion

　　清除附著在涂層表面的鋅結節(jié)和鋅粉

　　Removal of zinc nodules and powders attached to the coating surface

　　13.檢驗

　　13. Inspection

　　檢查和確定涂層，檢查工件外觀。

　　Check and determine the coating, check the appearance of the workpiece.

　　以上就可以幫助您做濟南鐵藝護欄防銹處理，想要了解更多關于濟南鐵藝護欄的相關信息，歡迎關注我們網站！

　　Above can help you do Jinan iron fence anti-rust treatment, want to know more about Jinan iron fence related information, welcome to pay attention to our website!