Waa kuwan kala duwanaanshaha aan ku soo koobno chromes Trivalent iyo hexavalent.
Farqiga u dhexeeya Trivalent iyo Hexavalent Chromium
Hexavalentdahaarka chromiumwaa habka soo jireenka ah ee chromium plating (badanaa loo yaqaan plating chrome) waxaana loo isticmaali karaa qurxinta iyo dhamaystirka shaqada.Plating chromium hexavalent waxaa lagu gaaraa iyada oo substrates la geliyo qubeyska chromium trioxide (CrO3) iyo sulfuric acid (SO4).Noocaan dahaadhka chromium wuxuu bixiyaa daxalka iyo xidhashada iska caabbinta, iyo sidoo kale soo jiidashada bilicda.
Qaybta isteerinka baabuurta ee dhamaystirka chrome hexavalent
chromium hexavalentdhajintawaxay leedahay faa'iidooyinkeeda, si kastaba ha ahaatee.Noocaan dahaadhka ahi waxa uu soo saaraa dhawr badeecooyin kuwaas oo loo arko qashinka khatarta ah, oo ay ku jiraan chromates-ka rasaasta iyo barium sulfate.Hexavalent chromium laftiisu waa walax halis ah iyo kansar waxaana si weyn u maamula EPA.Sanadihii la soo dhaafay, OEM-yada baabuurta sida Chrysler waxay sameeyeen dadaal ay ku bedelayaan dhammaystirka chromium-ka hexavalent iyaga oo dhammaystiraya jawi-saaxiibtinimo badan.
Chromium Trivalentwaa hab kale oo ka mid ahqurxin qurxin leh, waxaana loo arkaa beddelka deegaanka u saaxiibka ah ee chromium hexavalent, oo leh astaamo badan oo isku mid ah;Sida dhamaystirka chrome hexavalent, chrome trivalent waxay bixisaa iska caabin xoq iyo xoqid waxaana lagu heli karaa noocyo kala duwan oo midabyo ah.Plating chromium trivalent waxay isticmaashaa chromium sulfate ama chromium chloride sida qaybteeda ugu muhiimsan, halkii ay ka ahaan lahayd chromium trioxide;samaynta chromium trivalent ka yar sunta chromium hexavalent.
Dubo la dubay oo ku jira chrome trivalent madow oo ka sarreeya nikkel dhalaalaya
Iyadoo habka daminta chromium trivalent ay aad u adag tahay in la xakameeyo, oo kiimikooyinka lagama maarmaanka ah ay ka qaalisan yihiin kuwa loo isticmaalo chromium hexavalent, faa'iidooyinka habkani wuxuu ka dhigayaa mid ku-tartamaya hababka kale ee dhamaystirka.Habka trivalent wuxuu u baahan yahay tamar ka yar habka hexavalent wuxuuna u adkeysan karaa carqaladaha hadda jira, taasoo ka dhigaysa mid aad u adag.Sunta hoose ee Trivalent chromium macnaheedu waa in si adag loo habeeyey, hoosna u dhigaysa qashinka khatarta ah iyo kharashyada kale ee waafaqsan.
Xeerarka ku saabsan walxaha halista ah ee lagu adkeynayo gudaha Mareykanka iyo Midowga Yurub, baahida loo qabo dhamaystirka deegaanka u wanaagsan sida chrome trivalent ayaa kor u kacaysa.
Hexavalent Chromium Plating Solution
Kaydka adag ee chromium plated, kuwaas oo sida caadiga ah dhoobo dhumuc weyn, ayaa si weyn loogu isticmaalaa warshadaha macdanta iyo diyaaradaha iyo hydraulics iyo qalabka samaynta biraha.Waxa kale oo loo isticmaalaa dhamaystirka qalabka caafimaadka iyo qalliinka.
Hexavalent chromium electrolytes waxay u baahan yihiin il laga helo ion chromium iyo hal ama ka badan oo kiciyaasha si loo saxo.Samaynta habka dhaqameed, ee loo yaqaan qubeyska caadiga ah, ayaa ka kooban chromium iyo sulfate hexavalent oo ah kicinta kaliya.
Waxyaabaha lagu daro ee lagu dari karo qaabka caadiga ah ee hexavalent chromium plating bath qaabeynta si loo wanaajiyo habka waxaa loo yaqaan qubeyska isku-dhafan maadaama waxyaabaha lagu daro ay ka kooban yihiin ugu yaraan hal kiciye dheeraad ah marka lagu daro sulfate.
Trivalent Chromium Plating Solution
Electrolytes for trivalent chromium plating Solutions waxay ku kala duwan yihiin kimistariga, laakiin dhamaantood waxay ka kooban yihiin ilo chromium trivalent, kaas oo sida caadiga ah lagu daro sida sulfate ama chloride cusbada.Waxa kale oo ay ka kooban yihiin walxo milmaya oo isku dhafan chromium si loogu oggolaado inay saxdo rabitaanka kordhinta korantada xalka.
Waxyaalaha qoynta waxaa loo isticmaalaa in lagu caawiyo falcelinta dhigaalka iyo in la yareeyo xiisadda dusha sare ee xalka.Xiisadda dusha sare ee hoos u dhacda ayaa asal ahaan meesha ka saarta samaynta ceeryaamo ee anode ama cathode.Habka dhejinta wuxuu u shaqeeyaa si ka badan sida kimistariga qubayska nickel marka loo eego qubeyska Hex chrome.Waxay leedahay daaqad habraac cidhiidhi ah marka loo eego darista chrome ee hexavalent.Taasi waxay ka dhigan tahay in inta badan halbeegyada habsocodka ay tahay in si wanaagsan loo xakameeyo, iyo si aad u saxan.Waxtarka Trivalent Chrome wuu ka sarreeyaa kan Hex.Debaajigu waa wanaagsan yahay wuxuuna noqon karaa mid soo jiidasho leh.
Plating chromium hexavalent waxay leedahay faa'iidooyinkeeda, si kastaba ha ahaatee.Waxaa loo yaqaan kansarka aadanaha wuxuuna u horseedi karaa dhibaatooyin caafimaad oo halis ah.Xusuusnow waxa Erin Brockovich ka dhigay magac qoys?Noocaan dahaadhka ahi waxa uu soo saaraa dhawr badeecooyin oo loo arko khatar.
Darista chromium Trivalentwuu ka wanaagsan yahay deegaanka marka loo eego chromium hexavalent;habka electrodeposition guud ahaan waa la aqbalay inuu ka badan yahay 500 jeer ka yar sunta Chromium hexavalent.Faa'iidada ugu weyn ee hababka chromium trivalent waa in ay aad u badan tahay.Qaybinta dahaadhku waa lebbis ka badan, dhejinta foostadu waxay suurtogal u tahay chrome trivalent, taas oo aan suurtagal ahayn chrome hexavalent.
Hexavalent Vs Trivalent Chromium
| Walxaha | Hexavalent Chromium | Trivalent Chromium |
| Daaweynta Qashinka | Qaali ah | Fudud |
| Awood tuurid | Miskiin | Wacan |
| Badbaadada | Aad Aan Ammaan Lahayn | Badbaado ahaan;oo la mid ah Nickel |
| Dulqaadka wasakheynta | Si Wanaagsan | Ma aha sida Wanaagsan |
| NSS iyo CASS | La mid ah | La mid ah |
| Iska caabinta gubashada | Ma wanaagsan | Aad u fiican |
Shaxda is barbar dhigaya qaar ka mid ah sifooyinka Hexavalent iyo Trivalent Chromium
Ku saabsan CheeYuen
Waxaa lagu aasaasay Hong Kong 1969,CheeYuunwaa bixiyaha xalalka wax soo saarka qayb balaastik ah iyo daaweynta dusha sare.Ku qalabaysan mashiinno horumarsan iyo khadadka wax soo saarka (1 tooling iyo irbaynta xarunta, 2 khadadka electroplating, 2 khadadka rinjiyeynta, 2 PVD line iyo kuwa kale) oo ay hogaaminayaan koox ka go'an oo khubaro iyo farsamoyaqaano, CheeYuen Surface Treatment waxay bixisaa xal leexashadachromed, rinjiyeyn&Qaybaha PVD, laga bilaabo qalabka naqshadaynta wax-soo-saarka (DFM) ilaa PPAP iyo ugu dambayntii ilaa la dhammeeyey qaybinta qaybinta adduunka oo dhan.
Waxaa cadeeyeyIATF16949, ISO9001iyoISO14001laguna xisaabiyeyVDA 6.3iyoCSR, CheeYuen Surface Treatment waxa uu noqday iibiye si weyn loo ammaanay iyo lammaane istiraatijiyadeed ee tiro badan oo ah noocyada caanka ah iyo soo saarayaasha baabuurta, qalabka, iyo warshadaha wax soo saarka qubeyska, oo ay ku jiraan Continental, ALPS, ITW, Whirlpool, De'Longhi iyo Grohe. iwm.
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Waqtiga boostada: Nov-11-2023