Nigute Guhitamo Igicapo cya Aluminiyumu Yateguwe na Surface Coating

Mubice byubwubatsi, gupakira, ibikoresho byo murugo, nibindi, ubuziranenge bwibara ryometse kuri aluminiyumu (ibara rya aluminiyumu) ​​bigira ingaruka ku buryo butaziguye ubuzima bwibikorwa n'imikorere. Imbere y'ibicuruzwa bitandukanye ku isoko, nigute ushobora kumenya vuba ibyiza byayo nibibi? Iyi ngingo ikoresheje igeragezwa ryubugari, ikizamini cyo kurwanya umunyu, isuzuma rya adhesion yibice bitatu, kugirango bigufashe gufunga neza aluminiyumu nziza.  

Icya mbere: gutwikira umubyimba - ubuziranenge bw 'ubuzima

1. Kuki umubyimba ari urufunguzo?

 

- Imikorere yo gukingira: uburebure bwa coating bugena kurwanya ruswa hamwe nubushobozi bwikirere. Kurugero, fluorocarubone itwikiriye inyubako igomba kuba ≥25μm kugirango ihangane nimyaka 20 yo gusaza kwa UV.  

- Kugenzura ibiciro: igicucu cyoroshye cyane gukuramo byoroshye, kongera amafaranga yo kubungabunga; umubyimba mwinshi ni uguta ibintu, kuzamura ibiciro.  

2. Kwipimisha gute?  

- Uburyo bwo kwipimisha budasenya: Koresha ibipimo bya elegitoroniki ya magnetiki (urugero: Ikidage ElektroPhysik) gifite uburebure bwa 1μm kugirango usuzume vuba hejuru ya coil ya aluminium. - Kwipimisha gusenya: Nyuma yo guca icyitegererezo, koresha ubunini kugirango uhanagure irangi hejuru, hanyuma ukuremo mbere na nyuma kugirango ubone umubyimba.

3. Inganda zisanzwe

Ikirangantego	Ubwoko bwo gutwikira	Ibisabwa Ubunini (μm)	Shingiro
Urukuta rurerure rwo kubaka Urukuta	Fluorocarubone (PVDF)	≥25	ASTM B490
Akanama gashinzwe ibikoresho	Polyester (PE)	≥15	GB / T 12754
Gupakira ibiryo	Epoxy Resin	≥10	FDA 21 CFR 175.300

Itandukaniro hagati ya PE na PVDF

1. Kurwanya ikirere

PVDF:

Igipimo cya UV <1%, irashobora kurwanya gusaza hanze mumyaka irenga 20.

Ikizamini cyumunyu wamasaha 1000 (ASTM B117 isanzwe).

PE:

UV yunvikana, umuhondo no kwiruka nyuma yimyaka 5.

Ikizamini cyo kurwanya umunyu mubisanzwe ni amasaha 300-500, ibicuruzwa byiza birashobora kugera kumasaha 800. 2.

2. Kurwanya imiti

PVDF:

Kurwanya aside (nka acide sulfurike), alkali (nka sodium hydroxide) kwangirika, kwihanganira pH 1-13.

Kurwanya imbaraga zikomeye, kudashonga mumashanyarazi nka acetone, toluene.

PE:

Irwanya aside idakomeye na alkali, ariko byoroshye hydrolysed na aside ikomeye (nka aside hydrochloric) cyangwa alkali ikomeye.

Byoroshye gushonga na xylene, methyl ethyl ketone nibindi bishonga.

3. Ibikoresho bya mashini

Kwizirika:

PVDF: Ikizamini cya Scratch mubisanzwe 0-1 (ASTM D3359), bigomba kubanza kuvurwa na chrome / chrome idafite passivation.

PE: Gufata kugeza kuri 0-2, ariko byoroshye gukuramo munsi yubushyuhe bwinshi nubushuhe.

Guhinduka:

PVDF: kurambura ≥ 30%, bikwiriye kugunama (urugero: gupfunyika aluminium).

PE: kurambura hafi 15-20%, inguni yunamye ni nini cyane kandi yoroshye gucika.

Kwimuka kwa kabiri: Ikizamini cyo kurwanya umunyu - Kumenyera ibidukikije 'Ikizamini cya Litmus '

1. Ihame ry'ikizamini

Gereranya n'ubushuhe buhebuje bwo ku nkombe hamwe n’umunyu mwinshi, shyira ibara rya aluminiyumu mu isanduku ya 5% ya sodium ya chloride ya sodium ya chloride, hanyuma usuzume kurwanya ruswa mugihe cyo kubora cyangwa guhuha.  

2. Ibipimo by'ingenzi

- Ipitingi ya Fluorocarubone: hours1000 amasaha nta guhuha cyangwa guhindagurika birakenewe (nkuko bisanzwe AAMA 605.2).  

- Igipfunyika cya polyester: hours500 amasaha afatwa nkayishimishije, ibicuruzwa byiza birashobora kugera kumasaha 800 cyangwa arenga.  

Icya gatatu, kwimuka kwa gatatu: ikizamini cya adhesion - gutwikira no gukuramo 'adhesion'

1. Uburyo bwikizamini

- uburyo bwa gride (ASTM D3359): hamwe nicyuma cyogosha hejuru yumuringoti wa 100 1mm × 1mm ya gride ya kare, shyira kaseti nyuma yo kuyikuramo, witegereze igifuniko Reba igipimo cyo gutwikiraho.  

- Gutondekanya: Icyiciro 0 nicyiza (nta gukuramo), Icyiciro cya 5 nicyo kibi cyane (> 65%).  

2. Ibintu bigira ingaruka

- Uburyo bwambere bwo kuvura: bwaba butesha agaciro, chroming / chromium idafite passivation yuzuye cyangwa ntayo, bigira ingaruka itaziguye.  

- Gukiza ubushyuhe: Kunanirwa kubahiriza ibisabwa (urugero: ibifuniko bya fluorocarubone bigomba gutekwa kuri 230 ° C cyangwa hejuru) bizatuma kugabanuka kwifata.  

Ibibazo Bikunze Kubazwa

Q1: Ese aluminiyumu yamabara irashobora gusudwa?

Igisubizo: Ugomba kuvanaho igifuniko cyahantu ho gusudira, bitabaye ibyo ubushyuhe bwo hejuru bukarekura imyuka yubumara (nka fluoride).

Q2: Nigute ushobora gusukura hejuru ya aluminiyumu y'amabara?

Igisubizo: Koresha isuku idafite aho ibogamiye (urugero: Bwana Mighty) + umwenda woroshye, irinde aside (urugero vinegere) cyangwa abrasive kugirango ushushanye.

Q3: Kuki itandukaniro rinini ryibiciro?

Igisubizo: Ipfunyika rya fluorocarbon yo mu rwego rwo hejuru (nk'ikimenyetso cy'Ubuyapani KCC) igura inshuro 3-5 ugereranije na polyester isanzwe, ariko ubuzima bumara inshuro 2-3.