Raw khoom pretreatment yog thawj kauj ruam tseem ceeb hauv kev tswj kom zoo. High-lub zog carbon structural steel lossis qis- alloy steel kav xws li Q235B thiab Q345B raug xaiv. Cov khoom muaj pes tsawg leeg thiab qhov tsis xws luag yog kuaj los ntawm spectral tsom xam thiab kuaj ultrasonic. Cov ntaub ntawv raug txiav los tsim qhov ntev siv CNC txiav, nrog beveling ua tiav ib txhij los npaj rau kev vuam tom ntej.
Thaum lub sij hawm tsim, CNC dabtsi yog khoov tshuab thiab phaj dov cav tov yog siv rau txias los yog kub dabtsi yog khoov ntawm daim hlau, xyuas kom meej tias lub curvature ntawm lub Cheebtsam sib tw rau cov tsim tsis. Cov khoom tsis zoo sib xws yog tsim los ntawm cov txheej txheem stamping thiab shearing, thiab cov khoom tseem ceeb tau txais kev kho tshuab ncaj nraim los tswj kev sib txawv ntawm qhov ncaj rau tsawg dua lossis sib npaug li 1‰.
Vuam thiab sib dhos yog cov txheej txheem tseem ceeb uas txiav txim siab qhov ruaj khov ntawm tus pej thuam. Main welds siv submerged arc tsis siv neeg vuam los yog roj shielded vuam los xyuas kom meej weld nkag mus thiab tiv thaiv tsis xws luag xws li porosity thiab slag inclusions. Thaum sib dhos, jigs thiab fixtures yog siv rau qhov chaw, nruj me ntsis tswj qhov perpendicularity ntawm flanges thiab coaxiality ntawm cov khoom. Kev ntxhov siab nyem annealing yog ua tom qab vuam los tiv thaiv cov qauv deformation.
Kev tiv thaiv corrosion ncaj qha cuam tshuam rau kev pab cuam lub neej ntawm tus pej thuam. Ua ntej, kev txhaj tshuaj blasting yog siv los ua kom tiav Sa2.5 tus qauv rau kev tshem tawm xeb, ua raws li daim ntawv thov ntawm epoxy zinc -nplua nuj primer + polyurethane topcoat, nrog rau zaj duab xis thickness ntau dua los yog sib npaug rau 120μm. Rau cov chaw ntug dej hiav txwv thiab cov corrosive heev, ib qho ntxiv kub -dip galvanizing txheej txheem ntxiv, nrog zinc txheej thickness ntau dua los yog sib npaug rau 85μm.
Thaum kawg, tom qab kev tshuaj ntsuam xyuas tag nrho suav nrog kev txheeb xyuas qhov ntev, kev ntsuas kev thauj khoom, thiab kev ntsuas kev tiv thaiv corrosion, ib daim ntawv tshaj tawm kev ntsuam xyuas raug xa tawm raws li kev tsim nyog ua ntej ntim thiab xa khoom. Tag nrho cov txheej txheem nruj me ntsis raws li GB / T 2694 "Technical Conditions for the Manufacture of Transmission Line Towers" los xyuas kom meej tias cov khoom ua tau raws li kev nyab xeeb thiab kev ua haujlwm ntawm qhov project.