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 jima'i a tsakanin magnets, hulɗar da ke tsakanin superconductor da filin maganadisu na waje duka suna turawa da kuma janyo hankalin juna, ta yadda duka superconductor da magnet na dindindin zasu iya tsayayya da nauyin kansu da kuma dakatarwa ko rataye juye 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, wato, lahani a cikin tsarin samarwa da shigarwa, da ba da gyara ko musanya. Nuna damuwa na yanayi yana da amfani don karɓar zagayowar zafin jiki da girgizar bazuwar. Zazzabi gwajin sake zagayowar shi ne yarda da babban zafin jiki canjin kudi, babban thermal danniya, sabõda haka, da aka gyara na daban-daban kayan, saboda da hadin gwiwa bad, da abu ta kansa asymmetry, lahani a cikin tsari lalacewa ta hanyar boye matsala da agile gazawar, yarda da canjin yanayin zafi 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 shi ne ruwa nitrogen gas ci gaba da shigarwa a cikin planetary ball niƙa sanye take da wani zafi adana murfin, da sanyi iska zai zama babban gudun juyawa na zafi samar da ball nika tank real-lokaci sha, sabõda haka, da ball nika. tanki dauke da kayan, nika ball ne ko da yaushe a cikin wani cryogenic yanayi. 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 shine amfani da ruwa na cryogenic 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 sabon machinability, kayan aiki rayuwa da workpiece 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 yankan Hanyar ne ta hanyar spraying -20 ℃ ~ -30 ℃ (ko ma m) cryogenic iska kwarara zuwa aiki sashi na kayan aiki tip, da kuma gauraye da alama shuka mai mai (10 ~ 20m 1 awa daya), don yin wasa. rawar sanyaya, cire guntu, 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 ta Kamfanin Masana'antar Yasuda ta Japan ta yarda da shimfidar bututun iska na adiabatic da aka saka a tsakiyar shingen injin da injin yanke, kuma kai tsaye take kaiwa ga ruwa ta amfani da iska mai sanyi na cryogenic -30 ℃.Wannan tsari yana inganta yanayin yankewa sosai. 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 sarrafa, carbide abu don haɗa da lankwasawa ƙarfi, karaya taurin da kuma lalata juriya, ƙarfi, da taurin yana ƙaruwa da zafin jiki ne low sabili da haka cimented carbide sabon kayan aiki kayan aiki a cikin ruwa nitrogen sanyaya iya yiwuwa hašawa da kyau kwarai yankan yi. kamar a dakin da zafin jiki, kuma aikinsa yana ƙayyade ta yawan adadin lokaci mai ɗauri. 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 cikin ci gaban cryogenic na yankan machinability ya gudanar da wani binciken, zaɓi na low carbon karfe AISll010, high carbon karfe AISl070, qazanta karfe AISIE52100, titanium gami Ti-6A 1-4V, jefa aluminum gami A390 biyar kayan, aiwatarwa. na bincike da kimantawa: Saboda kyakkyawan brittleness a cryogenic, ana iya samun sakamakon machining da ake so ta hanyar yankan cryogenic. 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 ƙarfe aluminum gami, aikace-aikace na cryogenic sanyaya iya inganta kayan aiki taurin da kayan aiki juriya ga 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 dangantaka tsakanin titanium da kayan aiki.
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. Ƙwarewar shuka nitrogen mai ruwa. 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 mayar da martani ta hanyar sinadarai da sauran 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 komai ba. gurbatawa), 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 Bututu da M Hose ana gina su a cikin wani babban vacuum da Multi-Layer Multi-Layer Multi-screen na musamman insulated kayan, da kuma wucewa ta cikin jerin musamman m fasaha jiyya da high vacuum magani, wanda ake amfani da canja wurin na ruwa oxygen, ruwa nitrogen. , ruwa argon, ruwa hydrogen, ruwa helium, liquefied ethylene gas LEG da liquefied yanayi gas LNG.
Jerin samfurin na Mataki na Mataki, Vacuum Pipe, Vacuum Hose da Vacuum Valve a cikin Kamfanin HL Cryogenic Equipment Company, wanda ya ratsa cikin jerin manyan jiyya na fasaha, ana amfani dashi don canja wurin oxygen na ruwa, nitrogen na ruwa, argon ruwa, hydrogen ruwa, ruwa. helium, LEG da LNG, kuma ana ba da waɗannan samfuran don kayan aikin cryogenic (misali tankin ajiya na cryogenic, dewar da akwatin sanyi da sauransu) a cikin masana'antar rabuwar iska, gas, jirgin sama, lantarki, superconductor, kwakwalwan kwamfuta, kantin magani, bankin biobank, abinci & abin sha, taro kai tsaye, injiniyan sinadarai, ƙarfe & ƙarfe, roba, sabbin masana'anta da binciken kimiyya da sauransu.
Lokacin aikawa: Nuwamba-24-2021
