Umgaqo-nkqubo Wokusebenza Komatshini Wokucoca Ukungcola Okwenziwa YiCryogenic Uchaziwe

By UMike Chen, Umlawuli weMveliso | Iminyaka eli-12+ kwiMveliso yeRabha |I-LinkedIn

Izinto ezibalulekileyo ekufuneka ziqwalaselwe

• Umatshini wokukhupha i-cryogenic deflashing ususa i-flash ngokuyiqandisa nge-nitrogen engamanzi ide ibe buthathaka, uze uyiqhekeze nge-tumble impact ngaphakathi kwi-roller ejikelezayo.
• Le nkqubo iyasebenza kuba i-flash encinci iyaphola kwaye iqhawuka ngokukhawuleza kakhulu kunenxalenye yomzimba etyebileyo, ngoko ke i-flash iyaqhekeka ngelixa inxalenye isinda.
• Iiparameter ezintathu zilawula isiphumo: ubushushu bokusebenza (ukuya kuthi ga kwi-−150°C), isantya se-roller (20–70 RPM), kunye nexesha lokujikeleza (ngaphantsi kwemizuzu esi-8).
• Lo ngumgaqo osebenzayo, ongathethiyo, osusa i-flash encinci kakhulu ngaphandle kokusika izixhobo, yiyo loo nto ifikelela kwinqanaba lokupasa elingaphezulu kwe-98% kwiindawo ezichanekileyo.

Impendulo emfutshane: Umatshini wokukhupha i-cryogenic deflashing ususa i-flash kunye ne-burrs ngokusebenzisa utshintsho kwindlela izinto ezisebenza ngayo kubushushu obuphantsi. Uqandisa iindawo nge-nitrogen engamanzi de i-flash encinci ibe lukhuni kwaye iqhekeke, uze uziwise kwi-roller ejikelezayo ukuze i-impact iqhekeze i-flash kude nenxalenye e-ductile. Yinkqubo ebonakalayo, engadibaniyo: akukho blades, akukho abrasives, akukho picking ngesandla.

Iindlela ezininzi zokugqiba ziyasika, zisike, okanye zikhuhle izinto. I-cryogenic deflashing yenza into eyahlukileyo: itshintsha izinto ngokwazo, yenza kube lula ukuqhekeza i-flash engafunekiyo kunemveliso enamathele kuyo. Lo mgaqo uvakala ngathi yifiziksi kunokuba ube yi-machining, kwaye yiloo nto kanye eyiyo.

Esi sikhokelo sichaza isayensi engasemva kwenkqubo, sihamba ngenyathelo ngenyathelo kumjikelo womatshini, sichitha izinto ezibalulekileyo kunye neeparameter, kwaye sicacisa isizathu sokuba i-flash iphuke ngelixa inxalenye isinda. Ukuba wakha wazibuza ukuba umatshini unokuwucoca njani inxalenye ngaphandle kokuchukumisa inxalenye, le yimpendulo.

Yintoni iCryogenic Deflashing?

Ukucoca nge-cryogenic yinkqubo yokugqiba esusa i-flash, ii-burrs, kunye ne-parting-line excess kwiindawo ezibunjiweyo ngokuzipholisa ukuya kumaqondo obushushu aqinileyo ukuze izinto ezigqithisileyo ezincinci ziqhekeke, emva koko kusetyenziswa i-mechanical impact ukuqhekeza loo flash ibuthathaka.Igama elithi “cryogenic” libhekisa ekusebenziseni amaqondo obushushu aphantsi kakhulu, adla ngokuziswa yi-nitrogen engamanzi.

Ngokungafaniyo nokucoca ngomatshini, okusebenzisa umgqomo ojikelezayo kwaye kudla ngokuba sisenzo sokusika okanye sokusila, ukucoca ngomlilo okrwada kusebenzisa ubushushu njengesixhobo esiphambili.Ngenxa yokuba le nkqubo ayicinezeli incakuba kwindawo leyo, isusa ifleshi kwiinkcukacha ezincinci, imiphetho yangaphakathi, kunye neemilo ezintsonkothileyo ezingenakufikelela kwisixhobo sokusika.Yingakho iye yaba ngumgangatho weempawu zokutywina ngokuchanekileyo, izinto ezincinci zeenqwelo-moya, kunye nezixhobo ze-microelectronic.

Ifiziksi Engasemva Kwenkqubo

Yonke le ndlela ixhomekeke kwipropati enye yezinto ezibonakalayo: iqondo lobushushu lotshintsho lweglasi, okanye i-Tg.Ngaphezulu kwe-Tg yayo, i-compound yerabha ithambile kwaye iyanwebeka; ngaphantsi kwayo, into efanayo iba lukhuni, ibe yiglasi, kwaye iqhekeke.I-Tg echanekileyo iyahluka ngokwee-compound—irabha yendalo kwaye uninzi lwezinto ezenziwe ngokwenziwa ziyaqhekeka xa zingaphantsi kwe-0°C, ngelixa i-silicone ihlala iguquguquka xa kushushu kakhulu—kodwa lo mgaqo usebenza kuzo zonke ii-elastomers.

Nantsi ingqiqo ephambili eyenza inkqubo ikhetheke.I-Flash incinci kwaye ilula, ngoko ke ayinabushushu buninzi kwaye iphola ifikelele ngaphantsi kwe-Tg yayo phantse kwangoko xa ibekwe kwi-nitrogen engamanzi.Umzimba wenxalenye ephambili utyebile kwaye unzima, ngoko ke ugcina ubushushu obuninzi kwaye uhlala ngaphezulu kwendawo yawo yokuqhekeka ixesha elide. Ngexesha elifutshane ezi zinto zichithwa kwi-roller, i-flash iyaqhekeka ngelixa inxalenye igcina ukuguguleka okwaneleyo ukuze ikwazi ukusinda kwimpembelelo elandelayo.

I-nitrogen engamanzi ngumthombo wokukhenkceza kuba ibanda kakhulu—ibila malunga ne-−196°C—kwaye ayibizi kakhulu. Umatshini uyayifaka ukuze iqhube igumbi elijikelezayo liye kubushushu balo bokusebenza obuyi-−150°C, ubushushu obuphantsi ngokwaneleyo ukuba bukhanye ngokukhawuleza ngelixa ushiya ifestile yenkqubo yomqhubi ilawuleka.

Indlela Osebenza Ngayo Umatshini, Inyathelo Ngenyathelo

Umjikelo womatshini ulula ukuwusebenzisa kodwa uxhomekeke kwixesha elichanekileyo kunye nobushushu. Nantsi indlela elandelwa ngayo ngaphakathi komatshini oqhelekileyo wokucoca ulwelo we-cryogenic:

1. Layisha ibhetshi.Iinxalenye zifakwa kwigumbi le-roller, elithwala ukuya kuthi ga kwi-80 L—malunga ne-15–20 kg yemveliso kuxhomekeke kubuninzi benxalenye.
2. Pholisa igumbi.I-nitrogen engamanzi ifakwa ukuze ihlise ubushushu be-roller buye kwindawo yokusebenza yayo eyi-−150°C. Umthamo we-refrigerating olinganiselwe yi-1.1 kW unceda ukugcina ubushushu buzinzile ngexesha lomjikelo.
3. Gxobhoza ifleshi.I-flash encinci iphola ngaphaya kobushushu bayo bokutshintsha kweglasi kwaye ijika ibe lukhuni kwaye iqhekeke, ngelixa inxalenye yomzimba etyebileyo ihlala ithambile.
4. Ukudilika nokuqhekeka.Irola ijikeleza kwi-20–70 RPM, iwisa iindawo ukuze zibethane kunye nedrama. Amandla empembelelo asusa i-brittle flash kumgca wokuhlukana.
5. Linda ixesha lomjikelo.Umjikelo opheleleyo uthatha ngaphantsi kwemizuzu esi-8—ubude obaneleyo bokususa i-flash, bufutshane ngokwaneleyo ukuthintela indawo ukuba iphole ide yonakale.
6. Khulula umthwalo uze wahlukanise.Iindawo ezicociweyo ziyaphuma kunye neziqwenga eziqhekekileyo, ezizahlulwa kwimveliso egqityiweyo.

Qaphela into engekhoyo: akukho blade, akukho media erhabaxa, kwaye akukho mntu uyisebenzisayo le nkqubo.Ngenxa yokuba amandla okususa asetyenziswa ziindawo ngokwazo eziwayo, umatshini usika yonke indawo ngokulinganayo, kuquka ukunqunyulwa okungaphantsi kunye nemiphetho yangaphakathi.

Izinto ezibalulekileyo kunye neendima zazo

Icandelo ngalinye kumatshini wokucoca i-cryogenic lihambelana nenyathelo elinye lomgaqo. Ukuqonda iindima kwenza inkqubo ibe lula ukuyilungisa nokuyisombulula.

Iinkcukacha ezivela kwiumatshini wokucoca i-nitrogen engamanziiphepha lemveliso.

Umgangatho omncinci womatshini—malunga ne-1200 mm ubude kunye ne-2000 mm ububanzi kunye ne-1200 mm ukuphakama, ubunzima obuyi-200 kg—kuthetha ukuba yonke le migaqo ingena kwikona encinci ngokumangalisayo yegumbi lokugqiba.

Kutheni iThin Flash Breaks kwaye iCandelo Lisinde

Ukukhetha kwe-cryogenic deflashing yimbangela yokuba ithembeke kumsebenzi ochanekileyo, kwaye kufanelekile ukuyiqonda ngokweenkcukacha kuba yiyo ethintela inkqubo ekutshabalaliseni nje inxalenye kunye ne-flash.

Ukubhitya kuhamba kwizinto ngokuhamba kwexesha, kwaye iindawo ezincinci zifikelela kwimeko yokubhitya ngaphambi kokuba iindawo ezixineneyo zibe nkulu.I-flash, edla ngokuba yi-millimeter ubukhulu, iphola nge-Tg yayo phantse ngoko nangoko. Umzimba wenxalenye, otyebileyo izihlandlo ezininzi, uphola kancinci ukusuka kumphezulu ungena ngaphakathi. Ngexesha lomjikelo omfutshane, i-flash ixinene ngokupheleleyo ngelixa umbindi wenxalenye—kwaye ngokufuthi umphezulu wayo osebenzayo—uhlala uthambile ngokwaneleyo ukufunxa impembelelo yokuwa ngaphandle kokuqhekeka.

Yingakho ixesha lomjikelo libaluleke kangaka.Yenza umjikelo ube mde kakhulu kwaye inxalenye ngokwayo iphola ngaphantsi kwe-Tg yayo kwaye ibe buthathaka, apho ukuguqa okususa i-flash kuqala ukutshixa imveliso.Yisebenzise mfutshane kakhulu kwaye ifleshi ayikavuthwa, ngoko ke iyolula endaweni yokuqhawuka. Iwindow yomjikelo engaphantsi kwemizuzu esi-8 ilungiselelwe ukuhlala phakathi kwezo mpazamo zimbini.

Iiparameter zoMjikelo kunye noko zikuLawulayo

Iidial ezintathu—ubushushu, isantya, kunye nexesha—zimisela ukuba inkqubo iyayisusa ifleshi ngokucocekileyo okanye yonakalise iindawo. Zilungise kunye, kungekhona zodwa.

Useto olufanelekileyo luxhomekeke kwi-compound Tg, ubukhulu benxalenye, kunye ne-flash geometry. Ukulungisa kakuhle ngumsebenzi wemveliso nganye, hayi ukuseta kube kanye.

Ngenxa yokuba ubushushu bokubhitya buhluka ngokwezinto ezidityanisiweyo, iseti yeeparameter ezifanelekileyo zahlukile kwirabha yendalo, i-NBR, i-FKM, kunye ne-silicone.Ukuziphatha kokubuthathaka kwerabha ngokwako kukulinganisa okumiselweyo—i-ASTM D2137 kunye ne-ISO 812 zichaza iindlela zokumisela indawo yokubuthathaka kwerabha kwikhompawundi—eyireferensi eluncedo xa kumiselwa ifestile yobushushu kwimveliso entsha.

Izixhobo Ezifanelekileyo Kwi-Cryogenic Deflashing

Le nkqubo isebenza naphi na apho ifleshi inokwenziwa ibe buthathaka ngakumbi kunenxalenye.Yindlela ekhethwayo yokwenza izinto zerabha kunye neeplastiki ezichanekileyo, kwaye ikwaphatha uluhlu lwezinto ezidityaniswe ngesinyithi.

Izicelo eziqhelekileyo ziquka iindawo zerabha ezintsonkothileyo, izinto ezincinci zeenqwelo moya, iindawo zerabha zeemoto, irabha eyenziweyo echanekileyo, iindawo zeplastiki echanekileyo, izinto ze-microelectronic, iindawo ze-elektroniki ezintsonkothileyo, kunye ne-zinc, i-magnesium, okanye i-aluminium die castings, kunye nezitywino ezichanekileyo. Kwezi ndawo, umgaqo wokungaqhagamshelani ngowokuba: isusa ukukhanya okungenakufikelelwa yiblade kwaye ishiye umphezulu ungachukunyiswanga.

Ukuze kube lula, umsebenzi we-O-ring ophezulu okanye we-silicone apho kunzima ukufezekisa ubuqhophololo, eminye imigaqo ingangena ngcono.uluhlu lomatshini wokucoca irabhaibandakanya ezinye iindlela zamandla oomatshini kunye nomoya ezingavumeli i-nitrogen engamanzi ngokupheleleyo.

Iingxaki Eziqhelekileyo Nendlela Yokuzilungisa

Ukucoca nge-cryogenic yinkqubo yokulungisa. Uninzi lweengxaki zisonjululwa ngokulungelelanisa ubushushu, isantya, okanye ixesha—hayi ngokutshintsha iindawo.

Isiphelo: Ukukhupha umoya ngobushushu, kungekhona ngesixhobo

Umgaqo osebenzayo womatshini wokukhuculula i-cryogenic ulula kakhulu: yiqandise i-flash ide ibe buthathaka, uze uvumele i-tumble impact iyiqhekeze isuke kwindawo engasebenzi kakuhle. Akukho blade, akukho abrasive, akukho sandla. Ifiziksi yenza into engenakwenziwa sisixhobo sokusika—fikelela kwiinkcukacha ezincinci kunye nemiphetho yangaphakathi kwaye isuse i-flash ngokulinganayo ngaphandle kokuchukumisa umphezulu.

Le nkqubo ikhetha kuba ixhomekeke kubushushu: i-flash encinci iyaqhekeka ngaphambi kokuba inxalenye etyebileyo yenze njalo, kwaye ifestile yomjikelo omfutshane igcina inxalenye ikhuselekile. Ubushushu, isantya se-roller, kunye nexesha lomjikelo zezona zixhobo zintathu ezigcina inkqubo ngaphakathi kwefestile.

Kwizinto zerabha, iplastiki, kunye nezinto ezidityaniswe ngokuchanekileyo, lowo ngumahluko phakathi kokugqiba okusike imveliso kunye nokugqiba okusike ifleshi. Wakuba uwuqondile lo mgaqo, umatshini uyeka ukubonakala njengebhokisi ebandayo kwaye uqale ukubonakala njengenkqubo yomzimba elawulwayo, ephindaphindwayo—leyo onokuyilungisa, uyilinganise, kwaye uyithembe.