Lub hauv paus ntawm kev tiv thaiv overheating tawg thiab kub tawg yog nyob rau hauv kev tswj qhov kub thiab txias, txheej txheem optimization, thiab xaiv cov khoom. Txij li thaum lawv qhov ua rau txawv, cov tswv yim tsom yog xav tau los txo cov kev pheej hmoo zoo.
1. Kev Tiv Thaiv Kev Tiv Thaiv Kev Kub Kub Kub Tshaj
Kev ntsuas thiab kev siv tshwj xeeb
Ua nruj me ntsis tswj qhov kub thiab txias. Xyuas kom cov kub khiav khiav hauj lwm kub yog tsawg dua los yog sib npaug rau 600 degree, thiab cov cua sov kho kub yuav tsum tsis txhob ntau tshaj 1150℃(lub overheating point rau H13 steel).
Tsis txhob cia siab ntev -kub tuav. Txo lub caij nyoog ntawm atomic diffusion ntawm cov ciam teb nplej, tiv thaiv oxidation thiab void tsub zuj zuj.
Dual thermocouple saib xyuas + tsis siv neeg tswb. Siv lub tshuab ntsuas kub tsis tu ncua los saib xyuas thiab sau cov ntsuas kub ntawm lub sijhawm, txiav tawm lub zog yog tias qhov kub siab tshaj qhov txwv.
Xaiv cov khoom siv tiv thaiv- overheating. Ua ntej siv cov microalloyed lossis hmoov metallurgy steels xws li PM-H13 thiab H13+Ti/V/Nb.
Cov tswv yim tswv yim: Ua cov tshuaj ntsuam xyuas metallographic ua ntej cov pwm tshiab tuaj txog ntawm lub Hoobkas, thiab xyuas cov qoob loo txhua txhua 6-12 lub hlis thaum ua haujlwm.
2. Kev tiv thaiv kub kub
Kev ntsuas thiab kev siv tshwj xeeb
Optimize Welding Process Parameters: Tswj cov khoom siv hluav taws xob, kom tsis txhob muaj cov vuam tam sim no thiab cov cua txias qeeb.
Txhim kho kev sib koom ua ke thiab kev txwv: Txo cov txheej txheem rigidity, tsis txhob muaj kev ntxhov siab, thiab siv preheating (200-300 degree) kom txo tau cov thermal stress.
Siv Tsawg-Hydrogen Vuam Qhob: Xaiv cov vuam electrodes uas muaj cov dej tsis tshua muaj dej los yog cov roj tiv thaiv vuam (xws li Ar+CO₂) txhawm rau txo qhov kev pheej hmoo ntawm hydrogen-induced cracking.
Crate Filling thiab Slow Cooling Treatment: Sau lub qhov dej ntawm qhov kawg ntawm qhov vuam thiab siv kev ntsuas kom muaj cua sov thiab ua kom txias qeeb kom txo tau qhov kev nyuaj siab shrinkage.
Cov ntaub ntawv txhawb nqa: Preheating + qis- hydrogen vuam pob zeb tuaj yeem txo qhov tshwm sim ntawm kub tawg ntau dua 70%.
3. Kev Tiv Thaiv Kev Sib Koom (Systematic Protection)
Tsim cov qauv tshuaj xyuas cov khoom tuaj: Ua cov metallographic, tshuaj lom neeg muaj pes tsawg leeg, thiab kev soj ntsuam purity ntawm cov khoom siv tshiab kom ntseeg tau tias qhov tsis muaj qhov tsis zoo;
Ua ntej- vuam kev tshuaj xyuas qhov system: Ua ntej kev ua haujlwm vuam, cov khoom siv, cov ntaub ntawv tswj qhov kub thiab txias, thiab cov txheej txheem yuav tsum raug lees paub;
Ua cov tshuaj ntsuam xyuas metallographic tsis tu ncua: Txhua 3-6 lub hlis nyob rau hauv siab -load tej yam kev mob kom sai li sai tau pom grain coarsening los yog thaum ntxov puas;
Kev cob qhia thiab cov txheej txheem kev ua haujlwm zoo: Txhim kho cov neeg ua haujlwm muaj peev xwm txheeb xyuas qhov kub thiab txias tawg, thiab tshem tawm cov kev ua txhaum ntawm cov txheej txheem khiav haujlwm.
Txoj Cai Kev Nyab Xeeb: Kev tiv thaiv zoo dua li kev kho. Los ntawm kev tswj hwm kev sib koom ua ke ntawm "cov khoom siv + txheej txheem + kev saib xyuas," qhov kev pheej hmoo ntawm kev tawg tuaj yeem txo qis.
