Dacromet Flange Bolts: Superior Anti-Corrosion thiab Anti-xeb kev ua tau zoo rau kev thov thov 

Dacromet yog ib qho uas tsis yog-electrolytic, dej-raws li inorganic txheej txheej txheej txheem feem ntau ntawm overlapping zinc thiab txhuas flakes dispersed nyob rau hauv ib tug chromium-muaj los yog chromium-free inorganic binder. Siv los ntawm dip-spin, tshuaj tsuag, los yog dip-drain txoj kev thiab tom qab cua sov-kho, cov txheej ua ib tug nyias (feem ntau 5-15 μm), uniform, silver-grey tiv thaiv zaj duab xis uas adheres nruj nreem rau steel substrate.

Cov txheej txheem tiv thaiv corrosion ntawm Dacromet ua haujlwm los ntawm plaub qhov kev ua tiav:

1.Barrier tiv thaiv: Overlapping zinc thiab aluminium flakes tsim ntau txheej uas cuam tshuam qhov nkag mus ntawm noo noo, oxygen, thiab corrosive ions.

2.Sacrificial (galvanic) tiv thaiv: Zinc ua raws li ib tug sacrificial anode, nyiam corroding los tiv thaiv lub hauv paus hlau los ntawm xeb.

3. Kev kho tus kheej / kho tus kheej: Oxidation cov khoom ntawm zinc thiab txhuas sau micro-kev puas tsuaj rau hauv txheej, tswj kev ruaj khov los tiv thaiv xeb.

4.Passivation: Cov inorganic binder thiab passivating tebchaw slows lub sacrificial noj ntawm zinc, prolonging tag nrho corrosion kuj.

Vim hais tias cov txheej txheem tsis muaj kua qaub los yog electrolysis, Dacromet txheej tshem tawm tag nrho cov kev pheej hmoo ntawm hydrogen embrittlement - ib qho tseem ceeb kom zoo dua rau high-strength bolts (Qib 10.9, 12.9, thiab ASTM A490 / F3125). Qhov no ua rau Dacromet flange bolts ob leeg txhim khu kev qha thiab tiv taus xeb thiab ib puag ncig degradation.

3. Qhov tseem ceeb ntawm Dacromet Flange Bolts

3.1 Exceptional Corrosion thiab xeb kuj

Dacromet-coated flange bolts niaj hnub ua tiav 1,000 teev lossis ntau dua Kev ntsuam xyuas nruab nrab ntsev ntsev (ASTM B117 / ISO 9227) tsis muaj qhov pom ntawm xeb liab. Nyob rau hauv ntau yam specifications, dawb xeb yog ncua tshaj 240-500 teev, thiab tag nrho cov anti-corrosion kev ua tau zoo yog 7-10 npaug superior rau pa electrogalvanizing. Qhov zoo tshaj plaws xeb-inhibiting muaj peev xwm ua kom lub neej ntev kev pab cuam nyob rau hauv ntug hiav txwv dej, marine, industrial, thiab de-icing-ntsev ib puag ncig.

3.2 Tsis muaj Hydrogen Embrittlement Risk

Tsis zoo li cov txheej txheem electroplating uas qhia hydrogen rau hauv high-tensile steel, Dacromet dip-spin los yog cov txheej txheem tshuaj tsuag tsis yog electrolytic nkaus xwb. Yog li ntawd, lub zog siab flange bolts khaws lawv cov khoom siv kho tshuab tag nrho thiab tsis pub ncua sij hawm tawg tawg los ntawm hydrogen embrittlement - muab kev tiv thaiv xeb thiab kev nyab xeeb ntawm cov qauv.

3.3 Nyias, Uniform Txheej nrog Zoo heev Dimensional Tswj

Txheej txheej tuab yog li ntawm 5 txog 15 μm. Cov zaj duab xis nyias no tsis hloov qhov ntev ntawm cov xov, tso cai rau cov txiv ntseej siv yam tsis muaj overtapping. Cov txheej txheej nkag mus rau qhov nyuaj geometries, threads, thiab recesses uniformly, ua kom tiav kev tiv thaiv corrosion txawm nyob rau ntawm intricate flange bolt profiles.

3.4 Kev kub siab ruaj khov thiab muaj txiaj ntsig ntxiv

Dacromet txheej tseem ua tau zoo ntawm qhov kub thiab txias mus txog li 250-300 ° C, deb tshaj qhov thermal txwv ntawm cov pa zinc plating. Cov txiaj ntsig ntxiv muaj xws li kev pleev xim zoo, tswj kev sib txhuam coefficients (tshwj xeeb tshaj yog nrog lubricated topcoats), bimetallic compatibility nrog txhuas, thiab ua raws li ntau lub tsheb thiab ib puag ncig cov qauv.