Zvikururu zvinowanzoshandiswa pamusoro pekurapa maitiro arioxidation, electrophoresis, electroplating, Dacromet mana zvikwata, zvinotevera zvinonyanya kuti screw thecolor yekurapwa kwepamusoro kwechidimbu chechikamu.
- Nhema oxide:
Yakakamurwa kuva mukamuri tembiricha blackening uye yakakwirira tembiricha blackening, kusvika mukamuri kupisa kusviba semuenzaniso wekuita ndeichi: makemikari degreasing - kugeza mvura inopisa - kugeza mvura inotonhora - kubvisa ngura uye etching asidi - kuchenesa - kusviba - kuchenesa -Pamusoro pemafuta kana kuvharika. Iro firimu reoxide rinoumbwa nesodium hydroxide uye sodium nitrite pane tembiricha yakakura kupfuura 100 degrees.
Chinhu chikuru cheiyo oxide firimu isimbi tetraoxide (Fe3C4), firimu kufanana chete 0.6-1.5um, ngura kuramba ari murombo, panyaya kwete pamusoro mafuta kana kuvharwa kwazvakarerekera munyu pfapfaidzo chete maawa 1-2 kana zvakadaro, pamusoro mafuta mumaawa 3-4 kana zvakadaro. Zvishandiso zvidiki hazvishandise maitiro aya panguva iri screws. Inosiyaniswa kubva pakuonekwa kwemavara, black oxide uye black zinc uye electrophoretic black close, asi kwete seyakajeka se black zinc uye electrophoretic black color.
- Galvanize:
Black electroplating ine marudzi maviri eblack zinc uye dema nickel, musimboti wekuita wakangofanana, chete kugadzirwa kwe electroplating mhinduro uye post-kurapwa nelattice yakasiyana kana passivation mhinduro. Zinc inoshanda nemakemikari, iri nyore kuokisisa uye kusviba mumhepo, uye pakupedzisira inoburitsa 'white rust' corrosion, zinc plating mushure mekurapa kwechromate kuitira kuvhara zinc pane kemikari inoshandura firimu, kuitira kuti simbi inoshanda iri muchimiro chepasi, ndiko passivation ye zinc layer. Passivation firimu kubva pakuonekwa inogona kukamurwa kuita chena passivation (chena zingi), bhuruu (blue zingi), dema passivation (dema zingi), mauto girini passivation (girinhi zingi) zvichingodaro.
- Electrophoresis Black:
Kutora nzira ye electrochemical yekuisa colloidal particles ye organic resin pazvikamu kuti zvigadzire organic coating layer yemavara akasiyana-siyana, electrophoresis dema inoshandiswa zvakanyanya muindasitiri, tora dema process semuenzaniso: degreasing-cleaning-phosphating-electrophoresis pendi-kuomesa. Inogona kukamurwa kuva anodic electrophoresis (resin ionisation kuita negative ions) uye cathodic electrophoresis (resin electrophoresis kupinda positive ions), uye pendi muitiro zvichienzaniswa kuvaka kuita zvakanaka, kusvibiswa uye kukuvadza kwezvakatipoteredza kuderedza kuramba kwayo kwazvakarerekera munyu pfapfaidzo kushanda mumaawa 300 kana kupfuura, mutengo uye ngura kuramba uye Dacromet muitiro zvakafanana.
- Zinc chena:
Electroplating process ndeiyi: degreasing - kuchenesa - weak acid activation - electroplating zinc - kuchenesa - chena passivation bvudzi - kuchenesa - kuomesa, uye dema zingi mutsauko hakuna Over lat rack uye passivation mhinduro misiyano, chena passivation iine colorless transparent zinc oxide firimu, inenge isina chromium, saka iyo corrosion inomira inoenderana neblack zinc, yeblue indasitiri, yeblue zinc indasitiri ine dema, zinc. Maawa 6-12, kune uyu mugadziri weplating nekuvandudza kurongeka kwereshiyo yepassivation mhinduro inogona kuitwa kuramba isina kwayakarerekera munyu spray kwemaawa angangoita makumi maviri.
Nekuda kwewhite zinc plating type surface treatment screws kuita neutral salt spray test yakatanga kuonekwa pamusoro peplating corrosion white, red rust phenomenon iri mumaawa angangoita 40, saka white zinc corrosion resistance iri nani pane jena nickel. Kuonekwa uye nickel chena kana ichienzaniswa nerima, zingi chena kune yepakutanga ruvara rwe zinc greenish-white, uye chena nickel zvichienzaniswa nemusiyano mukuru.
- White Nickel:
Plating process ndeiyi: degreasing - kuchenesa - weak acid activation - kuchenesa - mhangura pasi - activation - kuchenesa - electroplating nickel- Kuchenesa - passivation - kuchenesa - kuomesa - kana kuvharwa, uye dema nickel process yakangofanana, kunyanya plating solution formula yakasiyana, shoma zinc sulfide uye join. Kusagadzikana kwayo kwekuora uye nickel yakasviba haina misiyano yakawanda 6-12 maawa, maitiro evagadziri vese vanozove pamusoro pemafuta kana kuvharwa, sekufunga nezvekukanganisa kwekuora pazvikamu zvepurasitiki zvezvinhu zvinouya zvinofanirwa kushandiswa sekutarisa kudzora kana kwete pamusoro pemafuta.
- Blue zinc, green zinc:
Maitiro acho akafanana neachena zinc, zinc yeblue inopfuudzwa zinc oxide film ine 0.5-0.6mg/dm2 ye trivalent chromium. Green passivation, inozivikanwawo sefive-acid passivation, inogona kuwana gobvu reuswa-girinhi firimu, iyo passivation mhinduro ine phosphate ions, inoguma inopenya uswa-girinhi firimu ifirimu rakaoma, rakarongeka rinodzivirira rekromati uye phosphates.
Nekuda kwekusaora kwayo, zingi yebhuruu iri nani pane zingi chena, nepo zingi yegirinhi iri nani pane zingi yebhuruu. Iyo ruvara rweblue zinc ishoma yebhuruu uye chena zinc iri padyo neindasitiri kushandisa yakawanda, iyo yekupedzisira inogona zvakare kushandiswa sechigadzirwa dhizaini kana imwe nzira ye screws.
- Enameled zinc (chemistry):
Muchikamu che galvanizing chemuitiro we zinc ine ruvara rwakanaka kurwisana necorrosion, maitiro ayo ekugadzirisa mavara ndeye: galvanizing - kuchenesa - 2% - 3% nitric acid kunze kwechiedza - kuchenesa - yakaderera chromium colored passivation - kuchenesa -Kubika kuchembera. Passivation tembiricha yakadzikira, iyo firimu inononoka, yakachenuruka firimu yakatetepa. Kupisa kwepamusoro, iyo firimu yakakora uye yakasununguka, isina kusungirirwa zvakasimba. Zvakanakisisa kudzora paanenge 25 madhigirii kuti ave nechokwadi chokuti ruvara rwakafanana runowanikwa mukati meimwe nguva yenguva.
Mushure mekufamba, inofanira kubikwa uye yakwegura kuti ivandudze kunamatira uye kusagadzikana kwekudzivirira kwefirimu. Ruvara zinc-plated screws nekubata pasi pekupokana kwekusarerekera munyu kupfapfaidza mumaawa anopfuura makumi mana nemasere, kutonga kwakanaka kunogona kuitwa kupfuura maawa zana.
- Dacromet:
Ndiko kududzirwa uye dudziro yeDACROMET, kureva kuti flaky zinc-based chromium salt protective coating, inonziwo zinc-aluminium coating. Iyo yakakosha maitiro ndeye: degreasing - degreasing - coating - preheating - sintering - kutonhora. Maitiro acho anowanzo kuve ne 2-4 nguva kubva pakuputira kusvika pakutonhodza, nekuti screws ine dip coating senge kuti uwane humwe ukobvu hunoda kuitwa kakawanda.
Chimiro chiri pamusoro pesimbi, yakaputirwa nedhiza reDacromet solution (kureva, ine zvikero zvezingi, aruminiyamu [zvikero kazhinji saizi 0.1-0.2X10-15 microns] Cr03 uye yakasarudzika organic zvinhu inoparadzirwa zvakanyanya yakasanganiswa aqueous solution), ne 300 ° C kana zvakadaro kuchengetedza kupisa kubikira imwe nguva yenguva yenguva, Dacrovalent yemvura inoderedzwa. chromium, zvichikonzera amorphous composite chromate compounds (nCr03) mCr203).
Corrosion resistance yakanakira kusarerekera munyu kusvika maawa 300 kana kupfuura, iyo yakashata yejasi haina yunifomu, yakaonda nzvimbo ye5-10um, gobvu chinzvimbo che40um kana zvakadaro, ichakanganisa kudzika kweiyo screw diameter, saka muchina wekutapa screws uye screws ine dhayamita diki ye screws yakanaka kwazvo kuti usashandise Dacromet process sepamhepo kurapwa.
Nguva yekutumira: Sep-18-2024
