Dab tsi tsim kev txiav txim siab muaj thaum xaiv lub caij nplooj ntoos hlav pins?

Dab tsi tsim kev txiav txim siab muaj thaum xaiv lub caij nplooj ntoos hlav pins?
Qee qhov kev txiav txim siab tsim kom nco ntsoov thaum xaiv lub caij nplooj ntoos hlav pins suav nrog kev ua tiav, fittings, khoom siv, thiab qib khoom.
Ua kom tiav
Caij nplooj ntoos hlav pins muaj nyob rau hauv ntau yam tiav, txhua tus nrog nws cov txiaj ntsig. Feem ntau cov khoom tiav suav nrog cov roj me me, phosphated, galvanized, cadmium thiab passivated stainless hlau.
Lub lightly oiled nto tiv thaiv lub hardware los ntawm oxidation thaum shipping thiab cia. Nws yuav tsum tsis txhob suav hais tias yog ib qho kev ua tiav tas mus li. Qee cov hlau alloy steel caij nplooj ntoos hlav pins muaj lub teeb roj tiav.

Phosphate coatings yog ua los ntawm nyias crystalline txheej ntawm phosphate tebchaw. Phosphate coatings muab zoo corrosion kuj thiab muab lub hauv paus haum rau tha xim. Kev siv cov roj foob hla cov phosphate txheej muab kev tiv thaiv ntxiv tiv thaiv corrosion. Phosphate coatings yog siv los ntawm cov hlau tsis tshua muaj hlau thiab cov pa roj carbon ntau thiab yuav tsum tsis txhob cia siab rau hauv cov dej hiav txwv los yog ib puag ncig corrosive heev.

Galvanized coatings muaj qhov zoo corrosion kuj thiab yog ib qho kev xaiv rau kev tiv thaiv carbon steel fasteners los ntawm corrosion. Vim muaj koob meej ntawm galvanizing, nws yog pheej yig los siv piv rau lwm cov kev daws teeb meem plating. Nws tseem yog cov khoom siv zoo heev thiab tuaj yeem tiv taus qhov kub txog li 120 degree. Thaum galvanized coatings muab kev tiv thaiv corrosion zoo dua li cov phosphate coatings, nws yuav tsum tsis txhob siv rau hauv marine daim ntaub ntawv los yog lwm yam corrosive ib puag ncig.

Cadmium Plating yog ib qho muaj zog kub tiav siv rau siab carbon steel caij nplooj ntoos hlav pins. Cadmium plating txhim khu lubricity, tiv thaiv galling, thiab tiv taus corrosion heev. Yog li ntawd, cadmium plating yog txheej ntawm kev xaiv rau seawater thiab aerospace daim ntaub ntawv.

Ib tug passivated nto yog ib tug passivating oxide txheej ntawm stainless hlau uas muab kev tiv thaiv ntxiv los ntawm corrosive hais. Thaum stainless hlau yog ib txwm corrosion resistant, no oxide txheej muab kev tiv thaiv ntxiv tiv thaiv corrosion rau ntawm qhov chaw ntawm stainless hlau Cheebtsam.

rooj tog
Fitting yog hais txog yuav ua li cas lub caij nplooj ntoos hlav pin haum rau hauv lub qhov xav tau. Interference haum thiab clearance haum yog ob hom haum. Ib qho kev cuam tshuam (kev sib txhuam) haum muab qhov siab tshaj plaws ntawm kev sib dhos qhov tseeb. Txawm li cas los xij, nws yuav tsum tsis txhob tshaj lub teeb nyem rau kev ruaj ntseg lossis tsis meej pem nrog lub xovxwm haum siv tus pin khoom. Ib qho kev tshem tawm (dawb) haum yog qhov zoo tagnrho rau kev yooj yim ntawm kev sib dhos vim hais tias tus pin nto tiv thaiv siab yog tsawg dua qhov cuam tshuam haum. Loose fits yog qhov zoo tshaj plaws thaum lub caij nplooj ntoos hlav pins yog siv rau hauv cov ntawv thov pob khawm uas yuav tsum tau ua kom xoob.
Khoom siv
Cov khoom siv los ntawm lub caij nplooj ntoos hlav pins yog ib qho tseem ceeb rau kev txiav txim siab. Caij nplooj ntoos hlav pins yog ua los ntawm alloy, carbon thiab stainless hlau. Ob qho tib si carbon steel thiab alloy steel yog feem ntau siv cov khoom siv nyiaj txiag. Txawm li cas los xij, lawv muaj kev tiv thaiv corrosion tsawg yam tsis muaj plating ntxiv lossis lwm yam kev kho saum npoo. Caij nplooj ntoos hlav pins ua los ntawm stainless hlau muaj zoo heev corrosion kuj thiab yuav tsum tsis muaj ntxiv plating. Txawm li cas los xij, lawv tsis muaj zog tshaj lub caij nplooj ntoos hlav pins ua los ntawm cov pa roj carbon siab.