1.Dab tsi yog qhov kev tshuaj ntsuam xyuas suav nrog?
Weld Beam Form: Txheeb xyuas seb qhov vuam txuas mus li cas thiab tsis sib xws, thiab seb puas muaj cov teeb meem pom tseeb xws li kev tsis sib xws, vuam pob, thiab undercuts.
Weld Beam Xim: Qhov chaw weld tuaj yeem sib txawv ntawm cov xim ntawm lub hauv paus hlau vim zinc ablation, tab sis cov xim txawv txav (xws li oxidation hnyav) yuav tsum tau soj ntsuam.
Spatter: Tshawb xyuas qhov sib tsoo ntau dhau ntawm qhov vuam. Kev sib tsoo ntau dhau feem ntau qhia txog qhov tsis zoo ntawm vuam tsis zoo (xws li voltage, tam sim no, thiab ceev).
Nto Cracks thiab Porosity: Saib xyuas qhov chaw weld nrog qhov muag liab qab lossis qis - lub hwj chim magnifying iav rau macroscopic tawg thiab nto porosity.
2.Dab tsi yog cov ntsiab lus, qhov zoo thiab qhov tsis zoo ntawm kev kuaj ultrasonic?
Lub hauv paus ntsiab lus: Siab - zaus lub suab nthwv dej nthuav tawm los ntawm cov khoom siv, xav txog thaum lawv ntsib qhov tsis xws luag (xws li qhov pores, suav nrog, thiab tsis muaj fusion).
Qhov zoo: Cov rhiab heev rau cov teeb meem tsis xws luag (xws li cov kab nrib pleb thiab tsis muaj fusion) thiab muaj peev xwm txheeb xyuas qhov tob tob.
Disadvantages: Yuav tsum muaj kev txawj ntse thiab kev paub ntawm tus neeg teb xov tooj, thiab yuav tsum muaj kev ua haujlwm siab ntawm qhov chaw ua haujlwm.
3.Dab tsi yog cov hauv paus ntsiab lus, qhov zoo thiab qhov tsis zoo ntawm X-ray detection?
Lub hauv paus ntsiab lus: X-rays los yog gamma rays nkag mus rau hauv lub vuam thiab tsim ib tug duab ntawm zaj duab xis los yog ib tug digital detector. Cov teeb meem sab hauv tshwm sim ntawm daim duab vim qhov sib txawv ntawm qhov nqus ntawm cov hluav taws xob.
Qhov zoo: Intuitive, muab cov ntaub ntawv ruaj khov, thiab muaj qhov ntsuas siab rau qhov tsis xws luag (xws li porosity thiab slag inclusions).
Disadvantages: Tus nqi siab, ua rau muaj kev nyab xeeb ntawm hluav taws xob, thiab feem ntau yog siv rau hauv cov ntawv thov uas xav tau qhov zoo tshaj plaws.
4.Qhov kev ntsuam xyuas cov khoom siv tshuab muaj dab tsi?
Tensile Test:
Ib qho qauv qauv yog tawg ntawm lub tshuab ntsuas tensile.
Lub hom phiaj: txhawm rau txiav txim siab lub zog tensile ntawm vuam. Qhov kev lees paub feem ntau yog qhov vuam tawg hauv niam txiv hlau, tsis yog vuam lossis cua sov- thaj tsam cuam tshuam. Qhov no qhia tau hais tias lub vuam muaj zog dua li cov niam txiv hlau nws tus kheej.
Khoov Test:
Cov qauv yog khoov rau pem hauv ntej thiab rov qab nyob ib ncig ntawm qhov khoov ntawm ib txoj kab uas hla.
Lub hom phiaj: txhawm rau kuaj cov plasticity thiab daim ntawv cog lus zoo ntawm cov vuam. Sab nrauv ntawm cov qauv khoov yog kuaj xyuas cov kab nrib pleb. Cov kab nrib pleb tshaj qhov ntev qhia tau tias tsis tiav fusion, slag inclusions, los yog tsis txaus toughness nyob rau hauv lub weld. Qhov no yog ib qho kev xeem tseem ceeb rau galvanized coil vuam.
Hardness Test:
Ib txoj kab hardness yog kos hla lub weld hla ntu, los ntawm niam txiv hlau mus rau qhov vuam thiab tom qab ntawd mus rau niam txiv hlau ntawm lwm sab.
Lub hom phiaj: Txhawm rau ntsuas qhov hardness faib ntawm cov vuam, cua sov- cuam tshuam cheeb tsam, thiab niam txiv hlau. Qhov kev ntsuam xyuas no tuaj yeem txiav txim siab seb qhov kub npaum li cas - thaj tsam cuam tshuam tau tsim cov qauv nkig, nyuaj martensite vim qhov vuam thermal voj voog (zinc muaj qhov kub tsis tshua muaj kub, uas tuaj yeem ua rau txias dhau).
5.Dab tsi yog cov ntsiab lus tshuaj xyuas tshwj xeeb rau galvanized coil vuam?
Porosity: Lub boiling point ntawm zinc (kwv yees li 900 degree) yog tsawg tshaj li melting point ntawm hlau (kwv yees li 1500 degree). Thaum lub sij hawm welding, zinc vapor evaporates los ntawm zinc txheej, uas, yog tias tsis tuaj yeem khiav tawm sai sai, ua rau hauv lub pas dej weld thiab tsim cov pores. Macrometallography thiab kev kuaj radiographic yog txoj hauv kev zoo los kuaj qhov pores.
Cov kab nrib pleb: Zinc kua tuaj yeem nkag mus raws li cov kab lis kev cai steel, ua rau zinc-vim tawg. Cov kab nrib pleb no feem ntau hloov maj mam thiab yuav tsum tau micrometallography lossis kev ntsuas ultrasonic rhiab heev los kuaj xyuas.
Kev sib txuas tsis muaj zog: Zinc vapor tuaj yeem ua rau lub pas hlau tsis muaj zog, ua rau tsis tiav lossis tsis zoo fusion ntawm cov vuam thiab lub hauv paus hlau. Khoov kuaj yog ib qho cuab yeej zoo rau kev kuaj xyuas qhov tsis xws luag.