Nheyo yekupfapfaidza zinc inopisa inogona kupfupikiswa seinotevera: kutanga, mhepo ine simba guru nemapaipi zvinoshandiswa kupfuudza zvidimbu zvejecha pamusoro pechinhu chebasa kubvisa ngura ne oxide scale pamusoro pesimbi, ukuwo pamusoro pacho pasina simba rekuwedzera adsorption coating yekupisa. Zvadaro, okisijeni, acetylene kana sosi yemagetsi yekupisa (magetsi anoshandiswa pamabasa makuru, okisijeni ne acetylene zvinoshandiswa pamabasa madiki nepakati) zvinoshandiswa kuburikidza nemhepo yakamanikidzwa uye zvishandiso zvakakosha (spray guns) kupfapfaidza zinc yakanyungudutswa nekukurumidza zvakanyanya pamusoro pesimbi.
Zvakanakira Kugadzira Simba
1. Kugadzira simbi inotonhora kunoshandisa pickling ne phosphating senzira yekurapa, zvichisiya acid ne alkali residue pamusoro pebasa, zvichiita kuti pave nengozi yekuora uye zvichiita kuti zinc coating inonyungudika mu cold-dip. Maitiro ekupfapfaidza zinc anoshandisa sandblasting senzira yekurapa, zvichikonzera kuti basa rive rakachena uye rakaomarara. Izvi zvinodzivirira ngura kubva mukati kuenda kunze uye zinc inobuda mushure mekupfapfaidza zinc.
2. Kuisa galvanizing mukupisa kunoda tembiricha chaiyo inosvika 440°C, izvo zvinogona kukonzera kuchinja kwechinhu chiri pabasa. Zvisinei, nzira yekupfapfaidza zinc inoshandisa tembiricha yakaderera, iri pasi pe80°C, zvichidzivirira kuchinja. 3. Maitiro ekupinza galvanizing muchando nekupisa anoganhurira maworkpieces pakureba, hupamhi, uye kukwirira kwetangi rekuisa galvanizing, nepo maitiro ekupfapfaidza zinc asiri.
4. Maitiro ekunyudza simbi inotonhora neinodziya anounzawo dambudziko rekugadzirisa panzvimbo. Kukuvadzwa kwesimbi dzinosungirirwa panzvimbo panguva yekuisa, kurodha nekuburitsa zvinhu panzvimbo, kana kutakurwa kunogona kugadziriswa chete nependi. Nekupfapfaidza zinc, kugadzirisa panzvimbo kunogona kuitwa uchishandisa zinc spraying, kudzivirira matambudziko ekugadzirisa.
5. Nekuti kudivha nechando kunoshandisa pickling uye phosphating senzira yekurapa, nzvimbo yebasa haina kunaka uye kunamatira kwejira hakuna kunaka. Kusiyana neizvi, kupfapfaidza zinc kunoshandisa sandblasting senzira yekurapa, zvichikonzera kukora uye kunamira kwejira zviri nani, nesimba rekudhonza re ≥6 MPa.
6. Kuisa magasi esimbi muchando kunosvibisa mvura zvakanyanya uye kunokonzera matambudziko makuru ezvakatipoteredza, nepo kuisa magasi esimbi muchando kusingakanganisi zvakanyanya nharaunda. Nokudaro, kuisa magasi esimbi muchando kuchawedzera kufarirwa mukudzivirira ngura yezvivakwa zvesimbi.
Maitiro eZinc inopfapfaidzwa inopisa
Maitiro ese ekuvaka zinc inopisa inopfapfaidza inodzivirira ngura akakamurwa kuita matanho mana: kurapwa pamusoro → kupfapfaidza zinc → kurapwa kwekuvhara → kuongororwa kwemhando
Kurapa Kwepamusoro
Nekuti kunaka kwekugadzirisa pamusoro kunokanganisa zvakananga kunaka uye kugara kwenguva refu kwependi, kurapwa kwakakodzera kwepasi kwakakosha. Kuputira pasi kuti ubvise ngura zvichienderana nezvinodiwa. Mitemo yekubvisa ngura inotevedzera mwero weSa3 mu "Rust Grades and Rust Removal Grades for Steel Surfaces Before Painting" (GB8923-88). Mwero uyu unotsanangura zvinodiwa zvemhando yepamusoro zvinotevera: Kuputira pasi kuti ubvise makwara, mafuta, ngura, tsvina, pendi, nezvimwe zvakabatanidzwa. Pamusoro payo panofanira kuratidza kupenya kwesimbi kwakafanana. Mushure mekuputika nejecha, chenesa pamusoro nemhepo yakachena, yakaoma yakamanikidzwa kana bhurasho rakachena. Mwero weSa3 mu "Rust Grades and Rust Removal Grades for Steel Surfaces Before Painting" (GB8923-88) unofanirwawo kufungwa nezvawo.
Kuputika kwejecha
Munguva yekuisa, zvishandiso nezviyero zvinotevera zvinoshandiswa: muchina wemhepo unodzvanya mhepo, tangi remhepo, muchina wemafuta-mvura, sefa yemhepo, poto yejecha, tepi yekunamatira, pfuti yejecha, uye muromo weporcelain usingatsvedzi. Muchina uyu une hunyoro hwakanyanya, jecha rerwizi rakatenderera (0.5-2mm). Jecha rinofanira kunge rakaoma, rine hunyoro husingasviki 1%, uye rakachena uye risina tsvina. Muno uyu unoshandisa muromo weporcelain wakakura wakaita seL. Kuburikidza nechikamu chekuwedzera-kudzvanya-kuwedzera, kuyerera kwemhepo kubva mumuromo wejecha kunosvika kumhanya kwesupersonic, zvichiwedzera simba rekinetic remunodzvanya, zvichiwedzera kushanda uye kuita kuti pamusoro pe substrate pave nemagetsi, nokudaro zvichiwedzera simba rekubatanidza re coating. Maitiro ekubvisa ngura anosanganisira mhepo yakamanikidzwa inopinda mutangi remhepo, ichipfuura nemumuchina wemafuta-mvura nefirita yemhepo kuti ive yakachena, yakaoma, uye isina mafuta, isati yapinda mupoto yejecha. Tepi yekunamatira inodzvanya jecha mupfuti yejecha uye inoriputira pamusoro pesimbi. Uchishandisa michina iyi nemamiriro ezvinhu, kugadziriswa kwenzvimbo kunogona kusangana nezvinodiwa zveSa3, nekuomarara kwenzvimbo kwe40-60µm. Panguva ino, kugona kweelectrode, kusimba kwesimba, uye kunamira kwesimbi pamusoro pesimbi zvese zvasvika padanho rakakodzera.
Kupfapfaidza Zinc
Kupfapfaidza zinc kunofanira kupedzwa mukati memaawa maviri kusvika matatu mushure mekupwanya jecha. Izvi zvinodaro nekuti simba re electrode repamusoro pe substrate mushure mekupwanya jecha rakasiyana zvakanyanya nerayo risati ragadzirwa, zvichiita kuti risvike padanho rayo rishoma. Panguva ino, kushanda kwe substrate kunosvika padanho rayo guru, uye simba rekubatanidza pakati pe substrate ne coating riri pamusoro paro. Simba re electrode pamusoro pe substrate rinoramba rakagadzikana kwemaawa maviri kusvika matatu. Nekufamba kwenguva, simba re electrode pamusoro rinotanga kuwedzera, simba rekubatanidza rinopera simba, uye simba rekubatanidza pakati pe coating ne substrate rinoderera. Izvi zvinokonzerwa nekukora kwe surface oxide film. Mukati memaawa maviri kusvika matatu, thin oxide film inopwanyika nyore nyore ne high-speed spraying particles painorova pamusoro. Mushure memaawa maviri kusvika matatu, oxide film inoshanda sechipingamupinyi pakati pe coating ne substrate, ichikanganisa kubatana pakati pe coating ne substrate. Muchina wekupfapfaidza unoshandisa spray gun yakagadzirwa munyika (kazhinji Zhonglian air handheld spray gun kubva kuShanghai Spraying Machinery Factory). Zvinhu zvinoshandiswa ne zinc waya yemhando yepamusoro, isina mafuta, ine dhayamita ye3 mm uye zinc yakawanda iri pakati pe99.5%-99.7%.
Nguva yekutumira: Gunyana-05-2025
