Babban manufar surface jiyya na foda metallurgy sassa:
1. Inganta juriya
2. Inganta juriya na lalata
3. Inganta ƙarfin gajiya

The surface jiyya hanyoyin shafi foda metallurgy sassa za a iya m za a iya zuwa kashi biyar masu zuwa:
1. Rufi: Rufe saman ɓangaren da aka sarrafa tare da Layer na wasu kayan ba tare da wani maganin sinadari ba
2. Maganin sinadarai na saman: yanayin sinadaran da ke tsakanin saman ɓangaren da aka sarrafa da mai amsawa na waje
3. Maganin zafin jiki: wasu abubuwa kamar C da N suna yadawa zuwa saman ɓangaren da aka sarrafa
4. Maganin zafi na saman: canjin lokaci yana haifar da canjin yanayin zafi na cyclic, wanda ke canza microstructure na farfajiyar sashin da aka sarrafa.
5. Hanyar nakasar injina: don samar da nakasar injina a saman ɓangaren da aka sarrafa, galibi don samar da damuwa mai saura, yayin da kuma ƙara haɓakar ƙasa.

Ⅰ.Tufafi
Za a iya amfani da Electroplating zuwa foda karfe sassa, amma za a iya za'ayi kawai bayan foda metallurgy sassa da aka pretreated (kamar tsoma jan karfe ko tsoma kakin zuma don rufe ramuka) don hana shigar da electrolyte.Bayan jiyya na electroplating, juriya na lalata na sassa yawanci ana iya ingantawa.Misalai na yau da kullun sune galvanizing (sake amfani da chromate don wucewa bayan galvanizing don samun baƙar fata ko sojojin kore mai haske) da plating nickel
Plating nickel maras amfani ya fi electrolytic nickel plating a wasu fannoni, kamar sarrafa kauri na rufin da ingancin plating.
Hanyar suturar zinc "bushe" baya buƙatar aiwatarwa kuma baya buƙatar rufewa.An kasu kashi foda galvanizing da inji galvanizing.
Lokacin da ake buƙatar anti-tsatsa, anti-lalata, kyakkyawan bayyanar da kuma wutar lantarki, ana iya amfani da zanen.Ana iya ƙara rarraba hanyoyin zuwa: murfin filastik, glazing, da feshin ƙarfe.

Ⅱ.Maganin sinadarai na saman

Maganin tururi shine mafi na kowa na duk matakan jiyya na ƙasa don sassan ƙarfe na foda.Maganin tururi shine don dumama sassan zuwa 530-550C a cikin yanayin tururi don samar da shimfidar shimfidar wuri mai faɗi (Fe3O4).Ta hanyar hadawan abu da iskar shaka na surface na baƙin ƙarfe matrix, da lalacewa juriya da gogayya kaddarorin suna inganta, da kuma sassa ne resistant Tsatsa yi (ƙarfafa ƙarfafa da mai nutsewa) A oxide Layer ne game da 0.001-0.005mm lokacin farin ciki, rufe dukan m surface. , kuma zai iya yaduwa zuwa tsakiyar sashin ta hanyar ramukan da aka haɗa.Cike wannan pore yana ƙara taurin bayyane, don haka Inganta juriyar lalacewa kuma sanya shi yana da matsakaicin matsakaicin matsawa.

Maganin sanyin phosphate shine halayen sinadarai a cikin wankan gishiri don samar da hadadden phosphate akan saman kayan aikin.Ana amfani da Zinc phosphate don pretreatment na coatings da filastik coatings, da kuma manganese phosphate da ake amfani da gogayya aikace-aikace.

Ana yin bluing ta hanyar sanya kayan aikin a cikin wanka na potassium chlorate a 150 ° C ta hanyar lalata sinadarai.Fuskar kayan aikin yana da launin shuɗi mai duhu.Kauri daga cikin bluing Layer ne game da 0.001mm.Bayan bluing, saman sassan yana da kyau kuma yana da aikin anti-tsatsa.

Nitriding canza launin yana amfani da rigar nitrogen a matsayin oxidant.A lokacin aikin sanyaya kayan aiki bayan sintiri, an kafa Layer oxide a cikin kewayon zafin jiki na 200-550 ° C.Launin da aka kafa oxide Layer yana canzawa tare da zafin jiki na aiki.

Anodized anti-corrosion magani ana amfani da aluminium na tushen sassa don inganta bayyanar da aikin anti-lalata.

Ana amfani da jiyya na wucewa zuwa sassa na bakin karfe, galibi don samar da shimfidar kariya ta oxide.Ana iya samun waɗannan oxides ta hanyar dumama ko ta hanyoyin sinadarai, wato, jiƙa da nitric acid ko sodium chlorate bayani.Don hana maganin daga nutsewa, sinadarai Hanyar tana buƙatar maganin kakin zuma da aka riga aka rufe.