Yuav ua li cas nrog rau qhov tsis xws luag cov tshuaj tiv thaiv txheej ntawm titanium ntawv thiab bar
Cov tshuaj tiv thaiv txheej txheej ntawm titanium phaj thiab titanium pas nrig yog qhov tseem ceeb cuam tshuam rau lub cev thiab tshuaj lom neeg ntawm titanium workpiece, thiab txheej txheej tsis zoo thiab txheej txheej yuav tsum raug tshem tawm tag nrho ua ntej ua haujlwm. Lub cev mechanical polishing ntawm titanium phaj thiab titanium pas nrig nto polishing txheej txheem:
1, Sandblasting:
Kev kho sandblasting ntawm titanium hlau castings feem ntau zoo dua nrog cov xim dawb corundum txau, thiab cov xuab zeb blasting siab me dua li cov hlau tsis muaj nuj nqis, feem ntau tswj hauv qab 0.45mpa. Vim hais tias, thaum lub siab txhaj tshuaj loj dhau lawm, cov xuab zeb cuam tshuam rau ntawm qhov chaw ntawm titanium sparks, qhov kub thiab txias tuaj yeem hnov mob nrog titanium nto, tsim cov pa phem, cuam tshuam rau qhov zoo. Lub sij hawm yog 15-30 vib nas this, tsuas yog tshem tawm cov xuab zeb nplaum rau ntawm qhov chaw ntawm cov casting, cov txheej txheej sintered thiab ib feem ntawm oxide txheej tuaj yeem raug tshem tawm. Tus so ntawm cov tshuaj tiv thaiv txheej yuav tsum tau muab tshem tawm sai sai los ntawm cov tshuaj pickling.
2, Khoom siv:
Pickling tuaj yeem tshem tawm cov tshuaj tiv thaiv txheej txheem sai thiab tshem tawm tag nrho yam tsis muaj paug rau saum npoo nrog lwm cov khoom. Hf-hcl series thiab HF-HNO3 series kua qaub ntxuav kua yuav siv tau rau titanium pickling, tab sis hF-HCl series kua qaub ntxuav kua muaj ib tug loj npaum li cas ntawm hydrogen absorption, thaum HF-HNO3 series acid ntxuav kua muaj ib tug me me ntawm hydrogen nqus. , uas tuaj yeem tswj hwm qhov concentration ntawm HNO3 kom txo qis hydrogen nqus, thiab tuaj yeem ua tiav kev kho kom zoo ntawm qhov chaw. Feem ntau, qhov concentration ntawm HF yog li 3 feem pua -5 feem pua. Qhov tsim nyog concentration ntawm HNO3 yog li ntawm 15 feem pua -30 feem pua .
Cov txheej txheem txheej txheej ntawm titanium phaj thiab titanium pas nrig tuaj yeem raug tshem tawm tag nrho los ntawm pickling tom qab sandblasting.
Ntxiv nrog rau kev siv lub cev tshuab polishing, muaj ob hom tshuaj tiv thaiv txheej ntawm titanium phaj thiab titanium pas nrig: 1. tshuaj polishing, 2. electrolytic polishing.
1, Tshuaj polishing:
Tshuaj polishing yog ua tiav los ntawm REDOX cov tshuaj tiv thaiv ntawm cov hlau hauv tshuaj nruab nrab. Nws qhov zoo dua yog tias cov tshuaj polishing tsis muaj dab tsi cuam tshuam nrog lub hardness ntawm cov hlau, polishing cheeb tsam thiab cov qauv zoo, txhua qhov chaw hauv kev sib cuag nrog cov kua polishing yog polished, tsis muaj cov cuab yeej tshwj xeeb, kev ua haujlwm yooj yim, tsim nyog rau cov qauv ntawm titanium hniav hniav. bracket polishing. Txawm li cas los xij, nws tsis yooj yim los tswj cov txheej txheem tsis zoo ntawm cov tshuaj polishing, uas yuav tsum muaj cov nyhuv polishing zoo yam tsis muaj kev cuam tshuam qhov tseeb ntawm cov hniav hniav. Qhov zoo dua titanium tshuaj polishing kua yog tsim los ntawm HF thiab HNO3 hauv ib qho kev faib ua feem. HF yog tus neeg sawv cev txo qis, uas tuaj yeem yaj cov titanium hlau thiab ua lub luag haujlwm qib. Thaum cov concentration tsawg dua 10 feem pua, HNO3 plays lub luag haujlwm oxidation los tiv thaiv kev sib cais ntau dhau thiab hydrogen nqus ntawm titanium, thiab tuaj yeem tsim cov nyhuv ci ntsa iab tib lub sijhawm. Titanium polishing kua yuav tsum muaj siab concentration, qis kub, luv polishing lub sij hawm (1 ~ 2min).
2, Electrolytic polishing:
Kuj hu ua electrochemical polishing los yog anodic dissolution polishing, vim qhov tsis tshua muaj conductivity ntawm titanium alloy raj, oxidation kev ua tau zoo heev, kev siv dej acidic electrolyte xws li HF-H3PO4, HF-H2SO4 electrolyte ntawm titanium tsis tuaj yeem polished, tom qab. daim ntawv thov ntawm sab nraud voltage, titanium anode oxidation tam sim ntawd tshwm sim, thiab anodic dissolution tsis tuaj yeem nqa tawm. Txawm li cas los xij, anhydrous chloride electrolyte muaj cov nyhuv polishing zoo ntawm titanium ntawm qhov tsis tshua muaj hluav taws xob, thiab daim iav polishing tuaj yeem ua tiav rau cov qauv me me, tab sis nws tseem tsis tuaj yeem ua tiav lub hom phiaj ntawm polishing tiav rau kev kho kom zoo. Tej zaum txoj kev hloov cov duab ntawm cathode thiab ntxiv cathode tuaj yeem daws qhov teeb meem no, uas xav tau kev tshawb fawb ntxiv.
