Corrosion Protection Methods rau Hex Bolts

Rau cov neeg siv ntawm hex bolts, kev tiv thaiv corrosion yog ib qho tseem ceeb heev. Cov txheej txheem kev kho mob sib txawv tuaj yeem ua haujlwm nyob ntawm qhov kev tiv thaiv corrosion. Hauv qab no yog cov lus qhia luv luv rau ntau txoj kev tiv thaiv corrosion rau hex bolts.

 

I. Oxidation
Txij li thaum hex bolts tsis muaj xeb - muaj peev xwm tiv thaiv vim blackening, lawv yuav xeb sai sai tom qab degreasing. Lub torque ua ntej- zawm sib xws ntawm blackened square kem templates kuj tsis zoo. Yog tias xav tau kev txhim kho, roj tuaj yeem siv rau cov xov sab hauv thaum sib dhos ua ntej zawm.

 

II. Zinc Diffusion
Zinc diffusion yog ib qho khoom siv- xeev metallurgical thermal diffusion txheej siv zinc hmoov. Nws muaj qhov zoo sib xws, muab cov txheej txheem sib xws ntawm cov xov thiab qhov muag tsis pom ntawm hex bolts, thiab nws cov kev ua haujlwm yog cov pa phem -dawb thiab ib puag ncig tus phooj ywg.

 

III. Electroplating Zinc
Cov txheej txheem electroplating zinc yog qhov ua rau hydrogen embrittlement thiab tsis zoo sib xws. Thaum txuas nrog lub square kem template ntawm 500 qhov siab, yuav tsum tau them nyiaj mloog mus rau qhov kev sib raug zoo ntawm lub qhov interfaces thaum lub pob tw sib dhos txheej txheem.

 

IV. Cadmium plating
Cadmium coatings muaj kev tiv thaiv corrosion zoo heev, tshwj xeeb tshaj yog nyob rau hauv cov huab cua hauv hiav txwv, qhov twg lawv cov corrosion kuj zoo dua rau lwm cov kev kho deg. Kev kho cov kua khib nyiab thaum lub sij hawm cadmium plating txheej txheem yog kim, raug nqi kwv yees li 15-20 npaug ntau dua li electroplating zinc. Yog li ntawd, nws tsis haum rau kev lag luam dav dav, tab sis yog tsim rau hex bolts siv hauv cov roj drilling platforms thiab HNA aircraft.

 

V. Chromium plating
Chromium txheej yog ruaj khov heev nyob rau hauv cov huab cua, tsis yooj yim discolor los yog poob luster, thiab muaj siab hardness thiab zoo hnav tsis kam. Chromium plating ntawm hex bolts feem ntau yog siv rau kev kho kom zoo nkauj.

 

VI. Phosphating
Ob txoj kev siv phosphating rau hex bolts yog zinc phosphating thiab manganese phosphating. Zinc-raws li phosphating muaj lubrication zoo dua manganese-raws li phosphating, thaum manganese-raws li phosphating muaj zoo corrosion kuj thiab hnav tsis kam. Muaj ntau lub tshuab fasteners raug kho nrog phosphating roj. Vim tias nws muaj lub zog zoo ua ntej-tightening sib xws, nws tuaj yeem ua kom ntseeg tau tias cov kev xav tau nruj yuav tsum tau ua nyob rau hauv kev tsim qauv thaum lub sij hawm sib dhos, yog li nws tau siv dav hauv kev lag luam, tshwj xeeb tshaj yog nyob rau hauv kev sib txuas ntawm qee qhov tseem ceeb.

 

VII. Nyiaj plating, npib tsib xee plating
Silver plating tsis tsuas yog tiv thaiv corrosion tab sis kuj tuaj yeem siv los ua cov roj nplua nyeem rau hex bolts. Yog vim li cas tus nqi, cov txiv ntoo yog nyiaj -plated, thiab bolts tsis siv; qee zaum cov ntsia hlau me me kuj yog nyiaj -plated. Hexagonal bolts yog npib tsib xee-plated thiab feem ntau yog siv nyob rau hauv daim ntawv thov uas yuav tsum tau corrosion kuj thiab zoo hluav taws xob conductivity, xws li cov terminals ntawm lub tsheb roj teeb.