Liquid nitrogen: Nitrogen gas a cikin ruwa jihar. Inert, mara launi, mara wari, mara lahani, mara ƙonewa, matsanancin zafin jiki na cryogenic. Nitrogen ya zama mafi yawan yanayi (78.03% ta girma da 75.5% ta nauyi). Nitrogen baya aiki kuma baya goyan bayan konewa. Frostbite wanda ke haifar da matsananciyar lamba ta endothermic yayin vaporization.
Liquid nitrogen shine tushen sanyi mai dacewa. Saboda kaddarorinsa na musamman, a hankali an ƙara biyan nitrogen mai ruwa da hankali kuma mutane sun gane su. An ƙara yin amfani da shi sosai a cikin kiwon dabbobi, masana'antar likitanci, masana'antar abinci, da filayen bincike na cryogenic. A cikin kayan lantarki, ƙarfe, sararin samaniya, kera injina da sauran abubuwan aikace-aikacen suna haɓaka da haɓakawa.
Cryogenic superconducting
Halaye na musamman na Superconductor, ta yadda zai yiwu a yi amfani da shi a cikin nau'i-nau'i iri-iri. Ana samun Superconductor ta hanyar amfani da nitrogen mai ruwa maimakon helium na ruwa a matsayin superconducting refrigerant, wanda ke buɗe aikace-aikacen fasaha mafi girma a cikin fa'ida kuma ana ɗaukarsa ɗaya daga cikin manyan ƙirƙirar kimiyya a ƙarni na 20.
Superconducting Magnetic levitation basira ne superconducting yumbu YBCO, lokacin da superconducting abu aka sanyaya zuwa ruwa nitrogen zafin jiki (78K, daidai da -196 ~ C), daga al'ada canje-canje zuwa superconducting jihar. Filin maganadisu da aka yi garkuwa da shi yana matsawa filin maganadisu na waƙar, kuma idan ƙarfin ya fi nauyin jirgin ƙasa, ana iya dakatar da motar. A lokaci guda, wani ɓangare na filin maganadisu yana makale a cikin babban na'ura saboda tasirin magnetic flux pinning yayin aikin sanyaya. Wannan filin maganadisu na tarko yana jan hankalin filin maganadisu na waƙar, kuma saboda duka biyun ture da jan hankali, motar ta tsaya tsayin daka a saman waƙar. Ya bambanta da babban tasirin ƙin jinin jima'i da sha'awar kishiyar jima'i tsakanin maganadisu, hulɗar da ke tsakanin superconductor da filin maganadisu na waje duka suna turawa da jan hankalin juna, ta yadda duka superconductor da magneti na dindindin za su iya tsayayya da nasu nauyi kuma su rataya ko rataya a ƙarƙashin juna.
Ƙirƙirar kayan aikin lantarki da gwaji
Binciken matsalolin muhalli shine don zaɓar adadin abubuwan muhalli na ƙirar ƙira, amfani da adadin madaidaicin yanayin muhalli ga abubuwan da aka gyara ko injin gabaɗaya, da haifar da lahani na tsari na abubuwan haɗin gwiwa, wato, lahani a cikin tsarin samarwa da shigarwa, da ba da gyara ko maye gurbin. Nuna damuwa na yanayi yana da amfani don karɓar zagayowar zafin jiki da girgizar bazuwar. Gwajin sake zagayowar zafin jiki shine karɓar ƙimar canjin zafin jiki mai girma, babban damuwa na thermal, don abubuwan abubuwan kayan daban-daban, saboda mummunan haɗin gwiwa, asymmetry na kayan, lahani a cikin tsarin da ke haifar da ɓoyayyun matsala da gazawar agile, karɓar ƙimar canjin zafin jiki na 5 ℃ / min. Matsakaicin zafin jiki shine -40 ℃, + 60 ℃. Yawan hawan keke shine 8. Irin wannan haɗuwa da sigogi na muhalli yana sanya walƙiya mai kama-da-wane, sassan sassa, sassan nasu lahani da aka fallasa a fili. Don gwajin sake zagayowar yawan zafin jiki, zamu iya la'akari da yarda da hanyar akwatin guda biyu. A wannan yanayin, ya kamata a gudanar da bincike a matakin.
Liquid nitrogen hanya ce mai sauri kuma mafi fa'ida ta garkuwa da gwada kayan lantarki da allunan kewayawa.
Cryogenic ball dabarun milling
Cryogenic planetary ball niƙa ne ruwa nitrogen gas ci gaba da shigar a cikin planetary ball niƙa sanye take da wani zafi adana cover, da sanyi iska zai zama babban gudun juyawa na zafi samar da ball nika tank real-lokaci sha, sabõda haka, ball nika tank dauke da kayan, nika ball ne ko da yaushe a cikin wani yanayin cryogenic. A cikin mahaɗar yanayi na cryogenic, niƙa mai kyau, haɓaka sabbin samfura da ƙaramin tsari na kayan fasaha. Samfurin yana da ƙananan girman, cike da tasiri, mai girma a yarda, ƙananan amo, ana amfani da shi sosai a magani, masana'antar sinadarai, kare muhalli, masana'antar haske, kayan gini, ƙarfe, yumbu, ma'adanai da sauran sassa.
Koren fasahar injina
Cryogenic yankan ne da amfani da cryogenic ruwa kamar ruwa nitrogen, ruwa carbon dioxide da sanyi iska fesa zuwa yankan tsarin na yankan yankin, sakamakon a cikin yankan yankin na gida cryogenic ko ultra-cryogenic jihar, ta yin amfani da cryogenic brittleness na workpiece karkashin cryogenic yanayi, inganta workpiece yankan machinability, kayan aiki rayuwa da workpiece ingancin surface quality. Dangane da bambancin matsakaicin sanyaya, za a iya raba yankan cryogenic zuwa yankan iska mai sanyi da yankan sanyaya ruwa nitrogen. Cryogenic sanyi iska sabon Hanyar ne ta hanyar spraying -20 ℃ ~ -30 ℃ (ko ma m) cryogenic airflow zuwa aiki sashi na kayan aiki tip, da kuma gauraye da alama shuka mai mai (10 ~ 20m 1 awa daya), don haka kamar yadda a yi wasa da rawar da sanyaya, guntu kau, lubrication. Idan aka kwatanta da gargajiya yankan, cryogenic sanyaya sabon iya inganta aiki yarda, inganta workpiece surface quality, kuma kusan babu gurbatawa ga muhalli. Cibiyar sarrafawa na Kamfanin Masana'antu na Japan Yasuda ya yarda da shimfidar bututun iska na adiabatic da aka saka a tsakiyar motar motar da kuma yanke shinge, kuma kai tsaye yana kaiwa ga ruwa ta amfani da iska mai sanyi na cryogenic -30 ℃.Wannan tsari yana inganta yanayin yankewa kuma yana da amfani ga aiwatar da fasahar yanke iska mai sanyi. Kazuhiko Yokokawa ya gudanar da bincike kan sanyaya iska mai sanyi a juyewa da niƙa. A cikin gwajin niƙa, an yi amfani da ruwan yankan tushe na ruwa, iska ta al'ada (+10 ℃) da iska mai sanyi (-30℃) don kwatanta ƙarfin. Sakamakon ya nuna cewa an inganta ƙarfin kayan aiki sosai lokacin da aka yi amfani da iska mai sanyi. A cikin juyawa gwajin, kayan aikin lalacewa na iska mai sanyi (-20 ℃) ya ragu sosai fiye da na iska na al'ada (+20 ℃).
Liquid nitrogen sanyaya yankan yana da muhimman aikace-aikace guda biyu. Daya shine a yi amfani da matsa lamba na kwalba don fesa ruwa nitrogen kai tsaye zuwa wurin yankan kamar yankan ruwa. Sauran shi ne a kaikaice sanyaya kayan aiki ko workpiece ta amfani da sake zagayowar evaporation na ruwa nitrogen karkashin zafi. Yanzu yankan cryogenic yana da mahimmanci a cikin sarrafa kayan gami da titanium, ƙarfe mai ƙarfi na manganese, ƙarfe mai tauri da sauran kayan aiki masu wahala. KPRaijurkar ya karɓi kayan aikin carbide na H13A kuma ya yi amfani da kayan aikin sanyaya na sake zagayowar ruwa don aiwatar da gwaje-gwajen yankan cryogenic akan gami da titanium. Sakamakon gwajin ya nuna cewa idan aka kwatanta da hanyoyin yankan gargajiya, an kawar da lalacewar kayan aiki a fili, an rage yawan zafin jiki da kashi 30%, kuma an inganta ingancin kayan aikin aikin. Wan Guangmin ya karɓi hanyar sanyaya kai tsaye don aiwatar da gwaje-gwajen yankan cryogenic akan babban ƙarfe na manganese, kuma an bayyana sakamakon. Lokacin ɗaukar hanyar sanyaya kai tsaye don aiwatar da babban ƙarfe na manganese a cryogenic, an kawar da ƙarfin kayan aiki, ƙarancin kayan aikin yana raguwa, alamun taurin aikin yana haɓaka, kuma ingancin saman kayan aikin yana inganta. Wang Lianpeng et al. sun rungumi hanyar feshin ruwa nitrogen a cikin injin ƙarancin zafin jiki na ƙarfe 45 da aka kashe akan kayan injin CNC, kuma yayi sharhi game da sakamakon gwajin. The kayan aiki karko da workpiece ingancin za a iya inganta ta dauko ruwa nitrogen spraying hanya a cikin low-zazzabi machining na quenched karfe 45.
A cikin ruwa nitrogen sanyaya jihar aiki jihar, carbide abu to connect da lankwasawa ƙarfi, karaya taurin da kuma lalata juriya, ƙarfi, da taurin yana ƙaruwa da zafin jiki ne low sabili da haka cemented carbide sabon kayan aiki abu a cikin ruwa nitrogen sanyaya iya yiwuwa hašawa da kyau kwarai yankan yi, kamar a dakin zafin jiki, da kuma ta yi da aka ƙaddara da adadin dauri lokaci. Don babban karfe mai sauri, tare da cryogenic, taurin yana ƙaruwa kuma ƙarfin tasiri ya ragu, amma gabaɗaya na iya danganta mafi kyawun aikin yankewa. Ya a kan wasu kayan a cryogenic inganta ta yankan machinability gudanar da wani binciken, da selection na low carbon karfe AISll010, high carbon karfe AISl070, qazanta karfe AISIE52100, titanium gami Ti-6A 1-4V, jefa aluminum gami A390 biyar kayan, da aiwatar da bincike da kimantawa: Saboda da kyau kwarai brittleness samu a cryogenic sakamako za a iya za a yi kuka. Don babban ƙarfe na carbon da ƙarfe mai ɗaukar nauyi, haɓakar zafin jiki a yankin yankan da ƙimar kayan aiki ana iya hana shi ta hanyar sanyaya ruwa nitrogen. A cikin yankan simintin gyaran gyare-gyare na aluminum, aikace-aikacen sanyaya na cryogenic na iya inganta ƙarfin kayan aiki da juriya ga kayan aiki na silicon lokaci abrasive lalacewa ikon, a cikin aiki na titanium gami, a lokaci guda cryogenic sanyaya kayan aiki da workpiece, da amfani low yankan zafin jiki da kuma kawar da sinadaran alakar tsakanin titanium da kayan aiki kayan.
Sauran aikace-aikace na ruwa nitrogen
Tauraron dan Adam na Jiuquan ya aika da tashar mai na musamman ta tsakiya don samar da ruwa nitrogen, mai tura man roka, wanda ake turawa cikin dakin konewa cikin matsanancin matsin lamba.
Kebul na wutar lantarki mai girman zafin jiki. Ana amfani da shi don daskare bututun ruwa a cikin kulawar gaggawa. Aiwatar da cryogenic stabilization da cryogenic quenching na kayan. Ƙwarewar na'ura mai sanyaya ruwa nitrogen (faɗawar zafi da alamun sanyi a cikin aikace-aikacen masana'antu) kuma ana amfani da su sosai. Liquid nitrogen girgije gwanin iri. Ƙwararrun magudanar ruwa na nitrogen na ainihin lokacin jigilar ruwa na jet, bincike ne mai zurfi koyaushe. Ɗauki nitrogen a ƙarƙashin ƙasa wuta tana kashe wuta, wuta ta lalace da sauri, kuma ta kawar da lalacewar fashewar iskar gas. Me yasa zabar nitrogen mai ruwa: Domin yana yin sanyi da sauri fiye da sauran hanyoyin, kuma baya amsa sinadarai tare da wasu abubuwa, yana dagula sararin samaniya sosai kuma yana samar da busasshen yanayi, yana da alaƙa da muhalli (ruwa nitrogen yana canzawa kai tsaye zuwa cikin yanayi bayan amfani, ba tare da barin kowane gurɓataccen abu ba), yana da sauƙi kuma mai dacewa don amfani.
HL Cryogenic Equipment
HL Cryogenic Equipmentwanda aka kafa a 1992 alama ce mai alaƙa daHL Cryogenic Equipment Company Cryogenic Equipment Co., Ltd. HL Cryogenic Equipment ya himmatu ga ƙira da ƙera na Babban Vacuum Insulated Cryogenic Pipe System da Kayan Tallafi masu alaƙa don biyan buƙatun abokan ciniki daban-daban. The Vacuum Insulated Pipe da Flexible Hose an gina su a cikin wani babban vacuum da Multi-Layer Multi-Layer Multi-Allon na musamman insulated kayan, da kuma wucewa ta cikin jerin musamman m fasaha jiyya da babban injin jiyya, wanda ake amfani da canja wurin na ruwa oxygen, ruwa nitrogen, ruwa argon, ruwa hydrogen, ruwa helium, liquefied ethylene gas LEG da LNGquefied yanayi.
A samfurin jerin na Phase Separator, Vacuum Pipe, Vacuum Hose da Vacuum Valve a HL Cryogenic Equipment Company, wanda ya shige ta cikin jerin musamman m fasaha jiyya, ana amfani da canja wurin na ruwa oxygen, ruwa nitrogen, ruwa argon, ruwa hydrogen, ruwa helium, LEG da LNG, kuma wadannan kayayyakin suna sabis don cryogenic kayan aiki (misali cryogenic kwandon kwandon shara, da dai sauransu). gas, jirgin sama, lantarki, superconductor, kwakwalwan kwamfuta, kantin magani, biobank, abinci & abin sha, sarrafa kansa taro, sunadarai injiniya, baƙin ƙarfe & karfe, roba, sabon abu masana'antu da kimiyya bincike da dai sauransu.
Lokacin aikawa: Nuwamba-24-2021
