Zvakanakira uye Yakakwana Yekuenzanisa Ongororo yeMain Surface Kurapa Maitiro eFasteners

2026-01-27

Seyakakosha zvikamu zvekubatanidza maindasitiri, hupenyu hwesevhisi uye kugadzikana kwekushanda kwezvitsigiro zvinoenderana zvakanangana nemaitiro ekurapwa kwepamusoro. Kurapa kwepamusoro-soro kwepamusoro hakungokwidziri kuramba kwecorrosion uye kupfeka kusamira kwezvibatiso asi zvakare kunogonesa kuita kwegungano, kudzivirira njodzi dzekuchengetedza (semuenzaniso, hydrogen embrittlement), uye inochinjika kune akasiyana mamiriro ekushanda.

I. Main Surface Kurapa Maitiro eFasteners uye Yawo Core Advantages

1. Electrogalvanizing (Kusanganisira Blue-White Zinc uye Color Zinc)

Electrogalvanizing (cold galvanizing) inzira inoisa yunifomu zinc layer pane fastener surfaces kuburikidza ne electrolysis, inowanikwa mumhando dzakadai seblue-white zinc uye color zinc. Iyo ndiyo yakanyanya kugamuchirwa yakaderera-yemutengo nzira yekurapa kune zvekutengesa fasteners. Yayo yakakosha mabhenefiti anosanganisira yakakura tekinoroji, yakaderera mutengo, inodzoreka coating ukobvu (5-15μm), yakakwirira pamusoro pekupedzisira, uye akawanda mavara sarudzo, zvichiita kuti ive yakakodzera kutaridzika zvinodiwa mumukati mechiedza anti-corrosion mamiriro. Kune madiki-saizi ma threaded fasteners (semuenzaniso, pazasi M8), electrogalvanizing haivharise tambo kana slots, inopa yakanakisa gungano kushanda, zvakanyanya kuwanikwa kwemusika, uye mapfupi ekugadzirisa magadzirirwo.

Zvinofanira kucherechedzwa kuti electrogalvanizing ine imwe njodzi yehydrogen embrittlement uye inongoshanda kune fasteners nekuoma pazasi HRC38. Uyezve, kuita kwayo kwe-anti-corrosion kuri pakati nepakati. Iyo yekusarerekera munyu yekupfapfaidza bvunzo (NSS) nguva yeyakajairwa electrogalvanizing kazhinji maawa 24-96, iyo inogona kuwedzerwa kusvika maawa anopfuura mazana maviri mushure mekurapwa neakakosha sealants, asi mutengo uchawedzera ne5-8 nguva zvinoenderana.

2. Non-Electrolytic Zinc Flake Coating (Dacromet/DACROMET)

Dacromet imhando nyowani yekupotera inonyanya kuumbwa ne zinc poda, aruminiyamu poda, uye chromic acid, inogadzirwa kuburikidza nedhipi coating uye kubika kurapa. Ndiyo nzira inosarudzwa yekugara kwenguva refu inopesana nekuora munzvimbo dzakaoma, ine zvakakosha zvakakosha: hapana hydrogen embrittlement ngozi, zvichiita kuti ive yakakodzera kune yakakwirira-simba fasteners; yakanakisa corrosion kuramba, ine isina kwayakarerekera munyu yekupfapfaidza bvunzo (NSS) nguva ye500-800 maawa kwechikamu chimwe chete uye 1500-2000 maawa kune yakapetwa kaviri, pamwe neakanaka tembiricha kuramba (nguva refu ≤250 ℃); precise friction performance control, iyo inovimbisa clamping simba kuenderana kune yakakosha kubatanidza uye inokodzera zviitiko zvine zvakakwirira zvinodikanwa zvekubatanidza kuvimbika.

Kukanganisa kwaro kushata kuchinjika kune diki-saizi fasteners pazasi M8 kana mukati drive threaded fasteners, sezvo kupfekedzwa kunogona kukanganisa gungano; yepakati mutengo mwero, kuwanikwa kwemusika, uye yechinyakare Dacromet ine hexavalent chromium, saka kutevedzera kwezvakatipoteredza kunoda kutariswa.

3. Kupisa-Dip Galvanizing

Kupisa-dip galvanizing inzira yekuenzanisa yekunze inorema anti-corrosion scenarios, kugadzira jasi nekunyudza zvisungo muzinc yakanyungudutswa pa440-460 ℃. Yayo yakakosha mabhenefiti ndeye yakakora coating (50-100μm), yakanyanya kusimba adhesion, uye yakanakisa kukuvara kupikisa. Kunyangwe zvikwambo zvikaitika pamusoro, zvinogona kuramba zvichiramba kuonda kuburikidza nechibairo anode mhedzisiro ye zinc, ine NSS nguva ye300-1000 maawa mushure mekupfuura. Iyi nzira inoratidzira mutengo wepakati, kuwanikwa kwakanaka kwemusika, uye yakaderera hydrogen embrittlement njodzi kune yakakwirira-simba zvisungo, zvichiita kuti ishandiswe zvakanyanya mune zvekunze zvimiro zvemukati.

Mipimo yaro ndeye kupera kwakashata kwepamusoro, haina kukodzera mamiriro emusangano chaiwo; diki-saizi yakaomeswa fasteners pazasi M8 inoda yechipiri tapping mushure mekurapwa, inokanganisa kugona; uye maitiro ekugadzirisa anogona kukonzera kupisa kuoma kwekuchinja, saka zvinorambidzwa kushandisa 12.9-giredhi kana alloy simbi giredhi zvikamu.

4. Black Oxide (Blueing) Kurapa

Black oxide (blueing) kurapwa inoumba 1-3μm gobvu iron tetroxide (Fe₃O₄) firimu panzvimbo yefastener kuburikidza nepamusoro-tembiricha oxidation. Mabhenefiti ayo epakati mutengo wakaderera zvakanyanya, mapfupi ekugadzirisa matenderedzwa, uye hapana kukanganisa pafastener dimensional kurongeka, zvichiita kuti ive yakakodzera kudzivirira ngura yekudzivirira-yakadzika-chaiyo zvikamu munzvimbo dzemukati dzisingaore. Iyi nzira haidi electroplating, haina kuisa hydrogen embrittlement njodzi, uye inoshanda senge yehupfumi sarudzo yezvikamu zvisiri pachena senge mukati mekutapurirana zvikamu zvemichina maturusi uye kubatanidza zvikamu zvezvigadziko zvemidziyo.

Kuita kwayo kunopesana nekuora ndiyo isina kusimba, ine isina kwayakarerekera munyu yekupfapfaidza bvunzo yenguva ye4-24 maawa chete, iyo inogona kuwedzerwa kusvika maawa makumi mana nemasere-72 mushure mekunyudzwa kwemafuta kunyudzwa, kungosangana nezvinodiwa zvekudzivirira ngura, uye gloss yepasi yakaderera, isina midziyo yekushongedza.

II. Yakachinjika Kuenzanisa kweKushanda Kwemaitiro eMakuriro Makuru

Process Type	Hydrogen Embrittlement Ngozi	Anti-Corrosion Level	Kukuvadza Kupikisa	Cost Level	Friction Control	Hukuru Hunoshanda
Electrogalvanizing	Hongu (kuoma kwakaderera chete)	Zvinyoro-Zviri pakati nepakati	General	Low	Zvakaoma Kudzora	Saizi Yakazara (Inodiwa kune Diki Size)
Dacromet	Hapana	Yakakwirira-Yakanyanya High	General	Pakati	Excellent	≥M6 Huru Yakakura
Hot-Dip Galvanizing	Yakaderera (Zvakarambidzwa kuMagiredhi Epamusoro)	Yakakwirira-Yakanyanya High	Excellent	Pakati	Zvakaoma Kudzora	≥M8 Hukuru Huru
Black oxide Kurapa	Hapana	Munyoro	Weak	Zvakanyanya Kuderera	General	Hukuru Hwakazara (Zvikamu Zvisina Kubuda pachena)