Imwe nzira yekujekesa zvinhu muMetal
Metallographic etching iyi inyanzvi yemakemikari inoshandiswa kuratidza zvinhu zvesimbi pamakona mashoma. Nokudzidza unhu , huwandu, uye kugoverwa kwezvinhu izvi zvakasiyana, metallurgist inogona kufanotaura nekutsanangura mamiriro edzimba uye kukundikana kwekuita kwemuenzaniso wakaitwa wesimbi.
Kutengesa Kunoburitsa Sei Matambudziko Mumatare?
Zvizhinji zvemasallurgical zvinyorwa zvinyoronyoro muhukuru; haikwanise kuonekwa kana kuongororwa pasina kuwedzera kwekunaka kwe 50x uye zvakanyanya sa 1000x pavanoshandisa microscopes chiedza.
Kuti uongorore zvinhu zvakadai, sampuli yesimbi inofanira kuve yakaputirwa kusvika kuchigoni chakaisvonaka-kufanana. Zvinosuruvarisa, pasi pekroscope, yakadaro yakakonzerwa nepamusoro yakaratidzika semasikati machena.
Kuita kusiyanisa pakati pezvinhu zvesimbi ye micro metal, chemikemikari inonzi ino etchants inoshandiswa. Etchants anosarudza zvimwe zvezvinhu izvi, izvo zvinoratidzika senzvimbo dzakaoma. Izvi zvinokwanisika nokuti kusiyana kwekugadzirisa, chimiro, kana chikamu chesimbi kunoshandura mazinga akaenzana ehurosi paanoratidzwa kune etchant.
Etchants anoshandiswa kuratidzira:
- chimiro uye chiyero chemiganhu yezviyo (kukanganisa mukristani yakarongeka)
- zvinyorwa zvesimbi (zvakasiyana-siyana zvesimbi mualloy)
- inclusions (zvishoma zvishoma zvisiri zvesimbi)
- kutendeseka kwekugadzirisa zvinhu, kunyanya mune zvigadzirwa zvemagetsi
- kuputika uye dzimwe nyaya mu welds
- kufanana, hutano, uye kuwanda kwekugadzira zvinhu
Mitauro yeCalllographic Etching
Maererano newebsite yeConnect Metal.com, "Etching inzira yekuzarura chimiro chezvinhu, maitiro evanhu echinyakare anosanganisira:
- Kemikari
- Electrolytic
- Thermal
- Plasma
- Munyu wakanyungudutswa
- Magnetic
Idzi mbiri idzi dzakajairika maitiro ndiwo makemikari uye electrochemical etching.
Kemikari uyeching inowanzobatanidzwa pamwe chete neAic acid kana nheyo neine oxidizing kana kuderedza mumiririri mune zvakadai sekudhakwa. Electrochemical etching inosanganiswa yemakemikari etching ane magetsi emagetsi / ikozvino. "
Inonzi Howching Inoshandiswa Sei Kudzivirira Kutadza Kwemitare
Metallurgists masayendisiti anonyanya kugadziriswa mumagadzirirwo uye makemikari esimbi. Apo simbi inokundikana (somuenzaniso, chimiro chinoputsika), zvinokosha kunzwisisa zvikonzero. Metallurgist anoongorora samples dzesimbi kuti aone zvikonzero zvekukundikana.
Pane kune gumi nematanhatu emhando dzakasiyana-siyana dzakagadzirwa nemhando dzakadai seammonia, hydrogen peroxide, uye hydrochloric acid. Nzira dzakasiyana-siyana dzinoshandiswa pakubata zvigadzirwa zvakasiyana. Somuenzaniso, ASTM 30, yakaumbwa naAmonia, Hydrogen Peroxide (3%), uye DI Water, inoshandiswa pakutsvaira mhangura. Keller's Etch, yakagadzirwa nemvura yakasvibiswa, Nitric acid, Hydrochloric acid, neHydrofluoric acid, inobatsira kuti etching aluminium uye titanium alloys.
Nokunyora nemakemikari akasiyana-siyana, metallurgist inogona kuratidzira matambudziko akasiyana-siyana angangodaro mune zvidhina zvesimbi. Etching inogona kubudisa zvinyoronyoro zvishoma, pores, kana inclusions mune simbi samples. Mashoko aya anopiwa nechingching anobvumira metallurgist kuziva kuti sei dare racho rakakundikana.
Pane imwe nguva dambudziko rakarongeka, zvinoita kuti usapinda mubvunzo wakafanana mune ramangwana.