Dub Streak Defects hauv Gr5 Titanium Bar Rolling

Gr5 titanium alloy yog siv dav tshaj plaws + titanium alloy nrog kev ua haujlwm zoo, ua haujlwm tseem ceeb hauv cov khoom sib txawv. Dub streak defects yuav tshwm sim thaum lub sij hawm bar dov txheej txheem, impairing nto zoo, ua inhomogeneous microstructure thiab cov khoom, thiab txo cov khoom tsim nyog tus nqi thiab kev ruaj ntseg kev pab cuam.

 

 

(1) Ingot Composition Segregation

Kev tsis sib xws ntawm cov ntsiab lus alloying ua rau muaj kev txhawb nqa hauv zos ntawm -theem stabilizing cov ntsiab lus thiab tsis txaus -theem stabilizing cov ntsiab lus. Nws tsim cov kab sib cais uas tsim los ua cov kab dub tom qab dov vim qhov sib txawv ntawm microstructure thiab hardness.

 

Cov impurities xws li Fe, Si thiab C qhia los ntawm cov khoom siv raw lossis smelting cais ntawm cov ciam teb. Nws tsim tsis tu ncua lossis txuas ntxiv dub streaks tom qab dov, thiab microcracks yuav tshwm sim nyob rau hauv mob hnyav.

 

Kev noj zaub mov tsis txaus ua rau muaj qhov tsis xws luag. Nws khaws cov kev sib txawv ntawm microstructural tom qab dov thiab tshwm li cov xim dub tom qab oxidation thiab corrosion.

 

(2) Cov txheej txheem dov tsis sib xws

Kub kub heev ua rau cov nplej coarsening thiab tsis muaj zog grain ciam; Tsis tshua muaj kub ua rau tsis zoo plasticity thiab siab deformation tsis kam, ua rau saum npoo ua rau microcracks thiab folds uas tig mus rau dub streaks tom qab oxidation.

 

Tsis tsim nyog yob profile thiab loj ceev sib txawv ua rau asynchronous deformation, tsim shear kev nyuaj siab rau saum npoo thiab inducing microstructural distortion thiab microcracks uas tam sim no raws li dub streaks tom qab oxidation thiab corrosion.

 

Tsis txaus lubrication thiab paug emulsion yuav ua rau txhuas khaws- nce thiab khawb; tshem tawm tsis tiav oxide nplai yog nias rau hauv qhov chaw, tsim cov streaks dub.

 

Tsis sib npaug qhov txias ua rau asynchronous microstructure transformation, tsim microstructural sib txawv bands uas tshwm sim raws li dub streaks tom qab pickling los yog kub kho.

 

(3) Kev Tiv Thaiv Kab Mob Nto thiab Nruab Nrab

Deteriorated los yog lim tsis zoo emulsion khaws cov titanium chips thiab cov roj stains, uas carbonize ntawm qhov kub thiab txias los ua ib qho nyuaj - rau - ntxuav cov streaks dub.

Siab -kub oxidation ua rau cov nplai oxide tsis sib xws; hauv zos dhau- etching lossis tsis txaus pickling ua rau xim txawv; tsis tiav neutralization ua rau lub zos corrosion thiab blackening.

 

(4) Cov khoom siv thiab cov cuab yeej tsis raug

Hnav, titanium-kav los yog tawg rolls imprint raws sij hawm dub streaks ntawm lub bar nto.

Cov lus qhia tsis zoo thiab cov rooj sib txig tsis sib xws khawb los yog quav rau ntawm qhov chaw, thiab qhov chaw puas tau blacken tom qab oxidation thiab corrosion.

Cov cuab yeej siv siab vibration ua rau tsis ruaj khov dov, ua rau muaj qhov sib txawv ntawm qhov chaw thiab microstructural inhomogeneity thiab ua rau cov streaks dub.

 

 

(1) Kev Tshawb Fawb Txog Kev Pom Zoo thiab Tshuab Lub Zeem Muag

Kev tshuaj xyuas nyob rau hauv lub teeb txaus: Dub streaks yog nruam los yog tsis tu ncua tsaus nti streaks raws cov kev taw qhia dov, nrog cov ciam teb ntshiab thiab tsis muaj qhov tsis sib xws. Tsawg tus nqi thiab intuitive, tab sis tsis tshua muaj kev ua haujlwm thiab yooj yim kom nco cov tsis xws luag.

 

Cov koob yees duab linear array thiab ntau- lub kaum sab xis lub teeb tau txais yuav rau 360℃duab ntawm cov tuav. Cov streaks dub raug txheeb xyuas los ntawm kev sib piv greyscale, 3D taw tes huab thiab lwm yam algorithms, ua rau kev ntsuas qhov loj me, qhov chaw thiab kev faib tawm. Qhov ua tau zoo yog 5-10 npaug ntawm kev ua haujlwm ntawm phau ntawv, haum rau kev tshuaj xyuas hauv online.

 

(2) Tsis yog -Kev kuaj kev puas tsuaj

• Kev kuaj Ultrasonic

Ultrasonic nthwv dej muaj kev cuam tshuam lossis txo qis ntawm qhov cuam tshuam cuam tshuam, thiab qhov chaw tsis raug thiab qhov tob yog txiav txim siab raws li waveforms.

Txheeb xyuas qhov sib cais sab hauv, qhov porosity thiab microcracks, thiab tuaj yeem pom nyob ze - qhov chaw tsis xws luag nrog qhov tob ntawm tsawg dua 1 mm.

• Eddy Kev Xeem Tam Sim No

Kev sib xyaw thiab microstructural inhomogeneity hloov eddy tam sim no impedance, thiab cov teeb meem raug txheeb xyuas los ntawm cov teeb liab txawv txav.

Cov ntxaij vab tshaus sai sai thiab ze rau -sab dub streaks nrog qhov tob ntawm tsawg dua 0.5 mm, thiab paub qhov txawv ntawm kev sib cais los ntawm kev puas tsuaj.

• Kev Xeem Penetrant

Penetrant nkag mus rau hauv qhov tsis xws luag thiab pom tom qab tsim.

Cov kws txiav txim plaub seb puas muaj cov kab mob dub nrog rau qhov qhib qhov tsis xws li microcracks thiab folds, feem ntau yog siv rau kev tshuaj xyuas cov khoom tiav.

 

 

(1) Qhov Chaw Tiv Thaiv thiab Tswj

Xaiv high-purity daim txhuam cev titanium thiab siab- zoo aluminium-vanadium master alloy ; kom raug faib ua feem thiab ntau- theem sib xyaw cov ntaub ntawv los tswj kev sib xyaw ua haujlwm yuam kev hauv ± 0.1%. Txais peb -lub sij hawm nqus cov khoom siv arc melting thiab optimize cov txheej txheem, ua ke nrog homogenization annealing kom txo tau kev sib cais; ua qhov tsis txaus ntseeg ntawm cov khoom siv, thiab cov khoom tsis tsim nyog raug txwv tsis pub siv.

 

(2) Txheej txheem Optimization

Txais yuav ib qho kev siv hluav taws xob los tswj cov cua sov thiab qhov kub thiab txias sib txawv, tiv thaiv overheating thiab hlawv. Xyuas kom tiav qhov kub thiab txias ntawm qhov kub thiab qhov tsim nyog faib deformation thaum dov; tswj cov cuab yeej raws sijhawm, thiab ua kom zoo dua lubrication thiab descaling. Txias uniformly tom qab dov, thiab anneal tiav cov khoom los txo kev ntxhov siab, homogenize microstructure thiab txo cov streaks dub.

 

(3) Terminal kho

Txais yuav ua tiav cov txheej txheem ntxuav ntawm alkaline ntxuav, pickling, neutralization thiab dej ntshiab ntxuav kom tshem tawm cov roj stains thiab oxide nplai thiab tiv thaiv corrosion residues.

 

Kev tshuaj ntsuam xyuas hauv online nrog lub tshuab tsis pom kev + eddy tam sim no, thiab kev tshuaj xyuas qhov muag pom + kev kuaj ultrasonic ua ntej ua tiav cov khoom warehousing kom paub meej tag nrho.

 

Bars nrog me ntsis cais dub streaks yuav siv tau tom qab tig thiab polishing; tuav nrog brittle cais, impurities thiab microcracks ncaj qha scrapped yam tsis tau downgrading.

 

 

Yog xav paub ntxiv txog Gr5 titanium tuav, ncav cuag txhua lub sijhawm:Sam.Rui@bjrh-titanium.com.