Polished txhuas nrog lawv ob txhais tes: ua li cas, cov cuab yeej, pab kiag li lawm

Aluminium yog ib tug mos mos hlau. Tej yam khoom los ntawm nws nws thiaj li poob nws thawj daim ntawv, rau ntawm qhov chaw tshwm hnav, oxides, cov khoom yuav ploj mus. Yog hais tias koj xav muab qub ib tug tshiab hom, nws yuav tsum tau polished txhuas. Ua li no, ib tug ntawm cov hauv qab no txoj kev muaj peev xwm yuav siv tau:

• electropolishing;
• tshuaj polishing;
• hniav etching.

txhuas polishing txoj kev: tshuaj txoj kev

Cov tshuab no yog tus phooj ywg environmentally, yooj yim thiab ncaj ceev. Nws yog ua tau los twb paub lawm, nrog acid-resistant hlau, uas yuav muab lub hauv paus ntawm lub polishing da dej. Yog hais tias qhov ntim ntawm kev ua hauj lwm yog tus me me, nws yog tej zaum yuav siv crucibles ua los ntawm iav. Lub thawv no uas muaj acid tshuaj:

• sulfuric;
• nitric;
• Phosphoric.

Khoom yog nws txo qis rau hauv lub kub tov, qhov kub thiab txias yuav tsum yog los ntawm 90 mus rau 120 ° C, qhov kawg tus nqi yuav yog nyob ntawm seb qib ntawm txhuas. Raug txhuas muaj pes tsawg leeg yuav tsum tsis pub dhau 30 vib nas this los yog feeb, rov qab txiav txim rau txog li 6 lub sij hawm. Nyob rau hauv nruab nrab qhov no ntxuav, thiab lawv yuav tsum tau tas li co.

sib polished txhuas yog ib qho zoo thaum siv nrog ib tug nruas yam tshaj tawm. Tom qab kawm tiav ntawm xws manipulations rau ntawm qhov chaw yuav hu cov tooj liab ci. Nws yuav tsum tau muab tshem tawm los ntawm muab yaug nyob rau hauv khiav dej nrog ib tug tsawg kub. Qhov no yuav tsum tau ua nyob rau hauv ib cuab. Nyob rau hauv lub tom ntej no theem ntawm cov khoom ua 30 feem pua nitric acid.

Ntxiv tswv yim pom zoo nyob rau hauv tej hauj lwm

Aluminium Polishing tej zaum yuav tiav los ntawm alkaline daws teeb meem:

• trisodium phosphate;
• sodium nitrate;
• caustic dej qab zib;
• sodium nitrate.

Lawv kub yuav tsum muaj ntau li piv nrog rau acidic txoj kev, cov kev txwv yog 120-140 ° C. Cov khoom yuav tsum tau withstand txog 5-20 vib nas this. Thaum zoo li no cov txheej txheem yog siv, tsis tau yuav sib npaug zos rau txhuas txog 8 microns tag nrho cov txheej tuab.

Kev siv cov electro-

Aluminium Polishing yuav tsum tau ua nyob rau hauv lwm txoj kev. Yog li ntawd nws yog ua tau rau tau ci iab thiab du nto, thiab lub tu yog ib yam uas zoo. Electrolytes rau tej hauj lwm nyob rau hauv feem ntau muaj sulfuric thiab phosphoric acid, lub lwm yam yuav nyob ntawm seb cov khoom.

Electrolytes peev xwm ua tau gloss tom qab kawm tiav. Rau hauv tus txheej txheem kub yuav tsum qis tshaj nyob rau hauv lub saum toj no cov ntaub ntawv, qhov kub thiab txias tsis pub tshaj yog sib npaug zos rau 60 mus rau 90 ° C.

Polishing yuav tsum tau nqa tawm rau 5 feeb, thaum lub sij hawm tam sim no ceev tej zaum yuav sib npaug zos rau 10-50 A / dm². Txheej txheem rau polishing cathodes yuav siv cov lead, tab sis muaj lwm yam alloys uas muab rau cov kev siv ntawm stainless hlau. Polishing yuav tsum siv cov duralumin ncua kev kawm ntawv, raws li zoo raws li lub ntsha da dej nrog polyethylene, txhuas los yog PTFE ua. Koj yuav tsum npaj ib tug alkaline ntsha, lawv yog tsis tshua kim.

Nyob rau hauv tus txheej txheem tsis yuav cuam tshuam rau nyob tus yeees ntawm cov ntsha, kub txwv tej zaum yuav txawv los ntawm 40 mus 95 ° C nrog kev xav txog kis, nws kav los ntawm 3 mus rau 6 feeb, whereas lub tam sim no ceev ntawm lub anode yog ib tug txwv ntawm 3-20 A / dm². Xaiv cathodes, npib tsib xee yog yuav tsum tau nyiam.

Nta hniav etching

txhuas polishing txoj kev tej zaum yuav zoo nkauj. Cov txheej txheem no ua hauj lwm pab raws li ib tug subspecies ntawm electropolishing. Aluminium alloys yog etched los ntawm anodes regime phosphorus-chromium ntsha. Nyob rau saum npoo ntawm cov khoom tsim crystalline qauv uas muaj hauv daim ntawv ntawm nyob los yog te. Nyob rau anode pas nrig dai tag nrho cov ntsiab lus, thiab ces koj yuav pib cov kev kho mob. Manipulation yuav tsum tau nqa tawm ntawm ib tug voltage ntawm 25-30 V. By kawg voltage ntawm lub nce mus txog 35-40 V, lub anodic tam sim no ceev yog sib npaug zos rau cov kev txwv ntawm 8-12 A / dm², thaum lub kub yuav sib txawv los ntawm 50 mus rau 80 ° C.

Kwv yees li 20 feeb tom qab manifest duab. Yog hais tias lub voltage yuav pib mus rau sawv dawb do, peb tau tias hais tias tus txheej txheem tiav. Tom qab qhov kawg ntawm manipulation khoom uas ntxuav, zoo qhuav, nws yog nqa tawm anodizing tshaj lawv. Aluminium yog ces dyed organic xim.

Mirrored txhuas yuav ua li cas los ntawm lwm txoj kev ci thiab anodic etching, uas yog hu ua iskritom. Yuav kom qhov no cov khoom ua ntej thiab tom qab tus txheej txheem yog raug los ua cua sov kev kho mob ntawm ib tug tshwj xeeb tswvyim. Koj siv tau cov anodic etching "Snowball", uas tso cai rau koj los ua ib tug matte nto sparkling.

Yuav ua li cas ib txoj kev kom zoo dua kev siv nyob rau hauv tsev

Cov tshuaj txhuam rau polishing yog ib tug ntawm cov feem ntau siv cov cuab yeej nyob rau hauv lub tsev rau polishing txhuas. Qhov no yog vim lub fact tias cov tshuaj compositions ntawm txawv virulence, lawv txaus ntshai rau tib neeg noj qab haus huv. Polishing yuav siv tau:

• ntwav txhuam ntoo;
• txhuam txhuam;
• lacquer;
• rags;
• tu cov khoom rau cov hom ntawm haus dej cawv.

Thaum xaiv ntwav txhuam ntoo yog ib qho tseem ceeb tsis overdo nws nrog lub grain, vim hais tias txwv tsis pub nws yuav tau thim khawb. Yuav kom txhim kho txoj kev coj kuj thiab ib tug gloss lacquer yog zoo dua siv.

Nta ntawm electrochemical polishing

Electrochemical polishing ntawm txhuas muab rau qhov kev siv ntawm thaum uas tig mus ua hauj lwm los ntawm tshuaj thiab hluav taws xob influences. Raws li cov technology ntawm xws li ib tug txoj kev ua hauj lwm pab raws li ib feem ntawm cov anode electrode, nws yog kev cob cog rua rau lub zoo DC mov qhov twg los. Workpiece nrog ib tug cia cia tam sim no thereto yuav tsum muab raus rau hauv ib lub reservoir uas yog lawm ua tus sau nrog ntsha. Lub luag hauj lwm ntawm lub thib ob electrode raug tooj liab cathodes.

Siv ib tug polishing tshuab

Tshuab rau polishing yog ib tug yooj yim txhais tau tias kom impart lub txhuas tus thawj gloss. Koj siv tau cov buff nyob rau hauv 1000, uas yog moistened nrog dej. Daim txhuam cev los yog daim ntaub yuav tsum tau ua ntawv thov mus rau lub ua dej feem. Ntxiv nrog polishing tshuab 1400 revolutions ib feeb. Thaum xws li ib tug tshuaj tsuag nqi yuav scatter nyob ib ncig ntawm 1 m.

txhuas nto yuav rhuab, cov kua yuav qhuav. Koj yuav tsum tau npaj kom txhij rau lub fact tias lub vajvoog yuav hammered txhuas "porridge". Yog li ntawd, txhua txhua feeb ntawm lub tshuab yuav tsum tau nres mus yaug cov hniav sib tsoo log nrog ib tug ntub daim ntaub nyob rau hauv khiav dej. Yuav kom qhov no kawg, ib txhia craftsmen siv pa bryzgalku.

"Porridge" yuav tsum tau ntxuav txawm nrog cov lus. Ci, yog tias koj yuav ntxiv siv kuj xav. Qhov no yuav tsis nyob ntev yog ib tug ntawm cov tseem ceeb tshaj plaws. Nws yuav nyob ntawm seb ntawm nws 80% ntawm zaum kawg tshwm sim. Muaj yuav tsum ntev 10 hli dhau puag vajvoog yuav tsum tau moistened, ywg dej nws bryzgalku. Nthuav dav yog moistened nrog ib tug phuam ntaub nqus dej. Cov tshuaj txhuam yog siv los kho tau lub ntxhib, nws daim ntawv thov yuav tsum tau nqa tawm nyob rau hauv workpiece, es ib lub voj voog.

xaus

txhuas polished nrog nws tus kheej ob txhais tes yuav ua tau ib tug ntau yam ntawm txhais tau tias, tab sis ib tug ntawm qhov zoo tshaj yog ib tug muab tshuaj txhuam. Nws tsis muaj ammonia additives thiab yuav maj mam ntxuav qhov khoom los ntawm khawb thiab roughness. Nrog cov qauv no nws yog tau mus cuag cov thawj ci. Cov kev tiv thaiv txheej yuav cais oxidations tsos rau ib ntev lub sij hawm.