Q1: Yuav ua li cas xaiv Anti-corrosion Txheej rau Q345D Steel Yeeb Nkab Hauv Qhov Chaw Kub Kub?
The primer uses epoxy zinc-rich (zinc powder content ≥80%, dry film ≥60μm). The intermediate paint uses glass flake epoxy (thickness ≥120μm) to enhance the shielding effect. The topcoat recommends polysiloxane (weather resistance >20 xyoo), thiab tag nrho cov zaj duab xis tag nrho yog ntau dua los yog sib npaug rau 250μm. Lub txheej txheej txheej system yuav tsum dhau -30 Qib Adhesion Kev Ntsuas (hla kev txiav txheej txheem qib 0). Polyurea elastomer txheej tuaj yeem txiav txim siab rau ib puag ncig tshwj xeeb kom yoog raws li qhov tsis muaj cua.
Q2: Yuav ua li cas kho cov Cathlic tiv thaiv cov kab ntawm Q345D steel yeeb nkab?
Cov kev tiv thaiv muaj peev xwm yuav tsum tau nce rau -0.95--1.05v (cse hais txog electrode). Qhov kev ntsuas fij rau siv cov khoom siv zinc heev (zn-al-cd), thiab cov zis tam sim no nce los ntawm 20%. Lub peev xwm sib txawv ntawm ob sab ntawm insulating flange yog tswj tau tsawg dua los yog sib npaug nrog 50mv. Cov tshuaj xyuas cov zaus yuav tsum tau ob npaug rau lub caij ntuj no (ib hlis ib zaug). Lub neej tsim lub neej ntawm lub system yuav tsum tau coj mus rau hauv tus account qhov kev cuam tshuam ntawm tsawg dua ntawm anode noj tus nqi.
Q3: Yuav ua li cas thiaj li yuav tswj q345d steel yeeb cov qauv hauv qab qhov chaw khov-thaw ncig ua si?
Ua ntej lub caij ntuj no txhua txhua xyoo, tshawb xyuas cov txheej txheem muaj mob hauv tag nrho (tsom rau blistering thiab tev). Qhov dej ntws tawm yuav tsum tau nruab nrog cov cua kub kab xev thiab rwb thaiv tsev txheej kom tiv thaiv cov dej khov. Thov cov roj tsawg-kub (-50℃viscosity tsawg dua los yog sib luag rau 200cst) mus rau bolted pob qij txha. Pib kev txhawb nqa ib ntus thaum cov daus thauj ntau tshaj tus qauv tsim los ntawm 50%. Tsim kom muaj kev co cov kev coj ua tsis tu ncua los tiv thaiv kev tawm tsam nkees.
Q4: Yuav ua li cas los xyuas qis-kub ntxhov siab corrosion nrua pleb ntawm Q345D steel kav?
Tsawg-ntau zaus hauv hluav taws xob nrhiav tau Technology (LFEC) tuaj yeem tshawb xyuas cov kab nrib pleb uas tob li 0.5 hli. Tsom rau kev ntsuas cov chaw ntsuas kev nyuaj siab xws li Weld ntiv taw thiab cov rooj sib tw. Yog pom cov kab nrib pleb, nres siv tam sim thiab tsim txoj kev npaj kho kom haum raws li AWS D1.8 tus qauv. Thaj chaw kho tau yuav tsum tau nthuav dav ntawm 50 hli kev tu. Muab ob npaug rau cov ntawv tsis ua kev puas tsuaj yuav tsum tau tom qab kho.
Q5: Yuav ua li cas soj ntsuam lub neej seem ntawm Q345D steel yeeb yam qauv?
Take samples every 5 years to test the impact energy at -20℃ (attenuation rate>15% yuav tsum ceeb toom). Ua ultrasonic tuab ntsuas sib txuas nrog corrosion tus nqi ntsuas (0.03mm / xyoo / xyoo rau qhov chaw kub tsawg). Ua kev soj ntsuam zoo finite (fea) rau simulate kev ntxhov siab vim kev faib khoom hauv huab. Ntsuas kev laus qib ntawm welded pob qij txha (hardness hloov pauv, microstructure kev hloov pauv). Tom qab kev tshuaj xyuas kev pom zoo, ua cov lus pom zoo kom ua kom tau kev siv txuas ntxiv, kho lossis hloov.
