Anenge ese mafasteners akagadzirwa nekabhoni simbi uye alloy simbi, uye general fasteners anotarisirwa kudzivirira ngura. Mukuwedzera, kuvhara kwepamusoro pekurapa kunofanira kunamatira zvakasimba.
Nezve kurapwa kwepamusoro, vanhu vanowanzo tarisa kune runako uye kudzivirira ngura, asi basa guru remafasteners kubatanidza kubatanidza, uye kurapwa kwepamusoro zvakare kune pesvedzero huru pakusimbisa kuita kwemafasteners. Naizvozvo, pakusarudza kurapwa kwepamusoro, isu tinofanirawo kufunga nezvechinhu chekusimbisa kuita, ndiko kuti, kuwirirana kwekuisa torque uye preload.
1. Electroplating
Electroplating of fasteners inoreva kuti chikamu chezvisungo chinoiswa electroplated chinonyudzwa mune chaiyo aqueous solution, iyo inenge iine mamwe akaiswa simbi komisheni, kuitira kuti mushure mekupfuura nemumvura ine mvura ine ikozvino, zvinhu zvesimbi mumushonga zvinodonha uye zvinonamatira kune yakanyudzwa chikamu chezvisungo. Electroplating of fasteners kazhinji inosanganisira galvanizing, mhangura, nickel, chromium, copper-nickel alloy, nezvimwe.
2. Phosphating
Phosphating yakachipa pane galvanizing, uye kusaita kwayo ngura kwakaipisisa kupfuura kuita galvanizing. Kune maviri anowanzo shandiswa phosphating nzira dzekusimbisa, zinc phosphating uye manganese phosphating. Zinc phosphating ine zvirinani zvekuzora zvivakwa pane manganese phosphating, uye manganese phosphating ine zvirinani kusagadzika kwecorrosion uye kupfeka kuramba pane zinc plating. Zvigadzirwa zvePhosphating zvakadai sekubatanidza mabhaudhi etsvimbo uye nzungu dzeinjini, misoro silinda, mainbearings, mabhaudhi anobhururuka, mabhaudhi emavhiri uye nzungu, nezvimwe.
3. Oxidation (kusviba)
Blackening + oiling ijairo rine mukurumbira rezvitsigiro zvemaindasitiri, nekuti ndiyo yakachipa uye inotaridzika zvakanaka kudyiwa kwemafuta kusati kwapera. Nekuda kwekuti kusviba kunenge kusisina ngura yekudzivirira ngura, inozoita ngura munguva pfupi inenge isina mafuta. Kunyangwe pamberi pemafuta, iyo yekusarerekera munyu yekupfapfaidza bvunzo inogona kungosvika maawa matatu ~ 5.
4. Kupisa kunyura zinc
Kupisa galvanizing ndiko kupisa kwekupisa kwekuputira umo zinc inodziiswa kuita mvura. Ukobvu hwayo hwekuputira i15 ~ 100μm, uye haisi nyore kudzora, asi ine yakanaka yekudzivirira ngura, saka inowanzoshandiswa muinjiniya. Nekuda kwekupisa kwekushisa-dip zinc processing, (340-500C) haigone kushandiswa kune zvinosungirirwa pamusoro pegiredhi 10.9. Mutengo wekupisa-dip galvanizing of fasteners wakakwira kupfuura iwo we electroplating.
5. Zinc impregnation
Zinc impregnation yakasimba metallurgical thermal diffusion coating ye zinc powder. Kufanana kwayo kwakanaka, uye kunyange mitsara inogona kuwanikwa mushinda nemakomba mapofu. Ukobvu hwejasi ndeye 10 ~ 110μm, uye kukanganisa kunogona kudzorwa mukati me10%. Simba rayo rekubatanidza uye anti-corrosion performance ne substrate ndiyo yakanakisisa pakati pezinc coatings (electro-galvanizing, hot-dip galvanizing uye dacromet). Maitiro ayo ekugadzirisa haana kusvibiswa-isina uye anonyanya kukoshesa zvakatipoteredza. Kana isu tisingatarise chromium nekuchengetedzwa kwezvakatipoteredza, ndiyo inonyanya kufanirwa kune yakakwirira-simba fasteners ine yakakwira anti-corrosion zvinodiwa.
Chinangwa chikuru chekurapa kwepamusoro kwezvigadziro ndechekuita kuti zvigadziro zviwane anti-corrosion kugona, kuitira kuti iwedzere kuvimbika uye kuchinjika kwezvitsigiro.
Nguva yekutumira: Zvita-08-2022
