Titanium yog ib qho yooj yim kom hnov tau nrog cov khoom xws li o, h, mg rau cov khoom siv hluav taws xob hauv lub cev, ua kom zoo nkauj ntxiv thiab ua kom zoo nkauj, thiab nce siab phem.
Titanium muaj qhov ntom ntom tsis tshua muaj, yog li cov inertia ntawm titanium kua yog me me thaum nws ntws tawm ntawm molten titting rau tus nqi txaus. Qhov ntsuas kub casting yog qhov loj piv nrog cov Casting pwm ntsuas kub (300 degree), cua txias yog nrawm, thiab ua kom muaj kev tiv thaiv kev tiv thaiv. Nws yog yam tsis muaj qhov tsis xws luag xws li pores nyob rau saum npoo thiab sab hauv ntawm titanium castings, uas muaj kev cuam tshuam zoo rau qhov zoo ntawm cov castings.
Yog li no, txoj kev kho deg ntawm titanium castings yog qhov tseem ceeb tshaj lwm cov kev kho hniav. Vim muaj cov khoom siv lub cev tshwj xeeb thiab tshuaj lom neeg ntawm titanium, xws li muaj hluav taws xob tsis tshua muaj, thiab lwm yam yooj yim los kho cov saum npoo ntawm titanium. Nws yog qhov nyuaj kom ua tiav cov nyhuv xav tau siv txoj kev kho kom haum. Cov txheej txheem tshwj xeeb thiab kev khiav haujlwm txhais tau tias yuav tsum tau siv.
Tom qab kev kho mob tom qab yog tsis tsuas yog kom tau txais ib qho du thiab cov khoom noj khoom haus ntawm cov neeg mob lub qhov ncauj kev zoo nkauj, tab sis kuj nce kev zoo nkauj ntawm cov hniav cuav; Qhov tseem ceeb tshaj, los ntawm cov txheej txheem saum npoo thiab kev hloov kho cov khoom siv ntawm cov kab lis kev cai, corrosion tsis kam thiab kev ntxhov siab ua tsis tau zoo dua.
I. Tshem tawm cov txheej txheem saum npoo av txheej
Qhov txheej txheem nto deg yog qhov tseem ceeb cuam tshuam rau lub cev thiab tshuaj ntawm titanium castings. Ua ntej sib tsoo thiab polishing titanium castings, cov dej paug txheej yuav tsum tau muab tshem tawm tag nrho cov nyhuv zoo. Cov txheej txheem nto deg ntawm titanium tuaj yeem tshem tawm kiag li los ntawm kev xaiv tom qab sandblasting.
1. Sandblasting: sandblasting kev kho ntawm titanium castings feem ntau siv dawb corundum rau ntxhib blasting. Lub siab ntawm sandblasting yog me dua li ntawm cov uas tsis muaj txiaj ntsig, thiab feem ntau tswj hwm hauv qab {2}}. 45mpa. Vim tias thaum lub tshuaj txhaj tshuaj siab dhau lawm, cov xuab zeb hais cuam tshuam rau cov sparanium kom muaj kev cuam tshuam nrog rau theem pureary, cuam tshuam rau qhov zoo. Lub sijhawm yog 15 mus rau 30 feeb, thiab tsuas yog cov yas xuab zeb, nto sintering txheej thiab ib feem ntawm cov txheej oxide ntawm cov npoo hlau tuaj yeem raug tshem tawm. Tus so ntawm cov nplaim hluav taws xob txheej txheej yuav tsum tau sai sai los ntawm cov tshuaj lom neeg.
2. Pickling: Pickling tuaj yeem nrawm nrawm thiab tshem tawm cov txheej txheem saum npoo av uas tsis muaj paug rau saum npoo nrog lwm cov ntsiab lus. Ob tus HF-HCL thiab HF-HNO3 pickling cov kev daws teeb meem tuaj yeem siv rau cov tshuaj muaj peev xwm ua kom muaj peev xwm nqus tau muaj peev xwm ntau lub peev xwm me me. Cov concentration ntawm hno3 tuaj yeem tswj tau kom txo qis hydrogen nqus, thiab cov saum npoo muaj zog tuaj yeem ua kom nruj. Feem ntau, cov concentration ntawm HF yog li ntawm 3% mus rau 5%, thiab kev xav txog HNO3 yog li 15% txog 30%.
Ii. Kev kho mob ntawm Casting tej yam tsis zoo
Pores sab hauv thiab tej thaj chaw sab hauv: tej yam sab hauv tuaj yeem raug tshem tawm los ntawm kub iSostatic nias, tab sis nws yuav cuam tshuam qhov tseeb ntawm cov hniav cuav. Nws yog qhov zoo tshaj plaws los siv X-Ray Qhov kom pom kom pom, kev sib tsoo nto kom nthuav tawm cov hws, thiab laser vuam. Nto pore qhov tsis xws tuaj yeem raug kho ncaj qha los ntawm kev siv laser hauv zos.
III. Sib tsoo thiab polishing
1. Txhua yam kev sib tsoo: Titanium muaj cov tshuaj lom neeg zoo, qis viscosity, muaj kev sib tsoo muaj yooj yim, thiab yog qhov yooj yim kom hnov tau nrog abrasives thiab abrasives. Decternary abrasives tsis haum rau kev sib tsoo thiab polishing titanium. Nws yog qhov zoo tshaj plaws los siv cov abrasives nrog zoo thermal conductivity, xws li pob zeb diamond, thiab lwm yam. Cov kab Polishing kab nrawm yog feem ntau 900 ~ 1800m / min. Nws yog qhov tsim nyog, txwv tsis pub, sib tsoo Burnts thiab microcracks yog nquag tshwm sim ntawm lub titanium nto.
2. Ultrasonic sib tsoo: los ntawm kev txiav txim ntawm kev co ultrasonic, cov abrasive yuam kev sib tsoo thiab hauv av ua kom tiav lub hom phiaj ntawm kev sib tsoo thiab polishing. Nws qhov zoo dua yog tias nws yooj yim dua kom zom cov grooves, qhov chaw thiab cov khoom sib tsoo ntawm cov nyhuv teb cov nyhuv teb loj dua yog tseem tsis txaus siab.
3. Electrolytic tshuab tshuaj sib tsoo: Siv cov cuab yeej sib tsoo, thiab muab cov khoom sib tsoo ntawm cov khoom sib tsoo los ntawm kev sib tsoo ntawm cov neeg kho tshuab thiab hluav taws xob polishing. Lub electrolyte yog {0. 9nacl, lub voltage yog 5V, thiab ceev yog 3000rpm / min. Txoj kev no tsuas tuaj yeem tsoo cov tiaj tiaj, thiab kev sib tsoo ntawm cov hniav looj hniav looj ua ke yog tseem nyob hauv theem kev tshawb fawb.
4. Barrel Sib Tsoo: Lub Zog Centrifugal tsim los ntawm kev sib tsoo thiab cov abrasive txav tus kheej ua kom tiav lub hom phiaj ntawm kev sib tsoo los txo cov npoo av. Kev sib tsoo yog automated thiab txuag, tab sis nws tsuas tuaj yeem txo cov nplaim taws saum npoo av tab sis tsis txhim kho saum npoo av. Cov kev sib tsoo yog qhov tsis zoo, thiab nws tuaj yeem siv rau kev deburring thiab ntxhib sib tsoo ua ntej zoo polishing ntawm cov hniav cuav.
5. Nws qhov zoo yog tias tshuaj polishing tsis muaj dab tsi ua rau lub hardness ntawm cov hlau, thaj chaw polishing thiab cov qauv qauv. Txhua ntu hauv kev sib cuag nrog cov kua polishing yog polished. Yuav tsum muaj cov khoom tshwj xeeb uas yuav tsum muaj. Nws yog ib qho yooj yim ua haujlwm thiab yog qhov tsim nyog rau polishing complex titanium hniav looj. Txawm li cas los xij, cov txheej txheem tsis muaj tshuaj lom neeg yog qhov nyuaj rau kev tswj hwm, thiab nws yuav tsum muaj cov kev ua kom zoo rau cov hniav ntawv tsis muaj cuam tshuam rau qhov tseeb ntawm cov hniav cuav. Cov tshuaj lom neeg zoo dua yog hf thiab hno3 npaj nyob rau qee feem. HF yog tus neeg sawv cev txo qis uas tuaj yeem zom cov hlau thiab ua si ib theem. Qhov kev xav tau yog<10%. HNO3 plays an oxidizing role to prevent excessive dissolution and hydrogen absorption of titanium, and can also produce a brightening effect. Titanium polishing liquid requires high concentration, low temperature and short polishing time (1~2min.).
6. Electrolytic polishing: tseem hu ua electrochemical polishing lossis anodic kev txiav txim siab polishing. Vim tias qhov hluav taws xob tsawg ntawm titanium thiab nws cov kev ua tau zoo oxidation, titanium tuaj yeem ua polished actidic electrolytes xws li HF-H3PO4 thiab HT-H2SO electrolytes. Tom qab thov kev sib zog sab nraud, cov titanium anode yog tam sim ntawd oxidized, thiab anode xaus tsis tuaj yeem nqa tawm. Txawm li cas los xij, kev siv ntawm anhydrous chloride electrolyte ntawm qhov hluav taws xob qis dua ntawm titanium, tab sis lub hom phiaj me me, tab sis lub hom phiaj ntawm kev ua tiav tiav tsis tuaj yeem ua haujlwm nyuaj. Tej zaum tus txheej txheem ntawm kev hloov tus Cathode puab thiab ntxiv Cathoodes tuaj yeem daws cov teeb meem no, uas xav tau kev tshawb fawb ntxiv.
IV. Kev hloov kho deg ntawm titanium
1. Nitrividing: Tshuaj Cua Sov Kev Kho Cua sov xws li cov ntshav dej hiav txwv, yog liner Nitrantation thiab Laser tsis kam thiab nkees ua yeeb yam ntawm titanium. Txawm li cas los xij, cov thev naus laus zis yog cov khoom siv kim heev, thiab nws yog qhov nyuaj rau kev ua tiav cov kev kho mob ntawm lub tsev.
2. Anodic oxidation: anodizing technology ntawm titanium yog qhov yooj yim. Hauv qee cov oxidizing media, nyob rau hauv kev nqis tes ua ntawm apple voltage, lub titanium anode tuaj yeem tsim nws corrosion ua yeeb yaj kiab, hnav tsis kam thiab huab cua tsis kam. Lub electrolyte rau anodizing feem ntau siv h2so4, h3po4 thiab organic acid aqueous daws.
3. Cov Taws
V. Coloring
Txhawm rau kom tau txais kev zoo nkauj ntawm Titanium cov hniav cuav thiab cov khoom noj oxidation thiab anodic oxidation thiab golden daj xim, uas txhim kho kev zoo nkauj ntawm Titanium cov hniav cuav. Qhov anodic oxidation txoj kev siv cov kev cuam tshuam ntawm titanium oxide zaj duab xis nyob rau ntawm titanium nto los hloov lub slot voltage.
VI. Lwm txoj kev kho nyob saum npoo
1. Nto Rougenening: Txhawm rau txhim kho txoj kev sib raug zoo ntawm titanium thiab xov kab, lub titanium nto yuav tsum tau roughened kom nce nws thaj chaw ua haujlwm. Sandblasting feem ntau siv hauv kev tshawb fawb txog kev kho siab xav, tab sis txhaws pob txha tuaj yeem ua rau cov oxide alide. Peb siv oxalic acid etching kom ua tiav cov nyhuv roughening zoo. Lub saum npoo roughness (RA) tuaj yeem ncav cuag 1.5 {}}}}}}}}}}}}. 3 {} μ1
2. Nto Kev Kho Mob Kom Tiv Thaiv Cov Kev Kub Kub Siab: Txhawm rau tiv thaiv kev ceev nrawm ntawm titanium nto txwv thiab titanium Txhuas, titanium Txhuas, Titanium Txhuam Txhuam Ntau, Titanium Txhuam Txhuam Txhuam Ntau, Titanium Qhov kev kho mob saum npoo no muaj txiaj ntsig zoo rau cov kub kub oxidation ntawm titanium. Tej zaum txheej xws li cov tebchaw ntawm titanium nto muaj txiaj ntsig rau kev sib khi ntawm titanium thiab plooj (porcelain, uas tseem xav tau kev tshawb fawb ntxiv.
