Liquid nitrogen: Nitrogen gasi iri mumvura. Inert, isina ruvara, isinganhuhwi, isingaore, isingabatike, yakanyanya cryogenic tembiricha. Nitrogen inoumba huwandu hwemhepo (78.03% nehuwandu uye 75.5% nehuremu). Nitrogen haishande uye haitsigire kupisa. Frostbite inokonzerwa nekunyanyisa endothermic kubata panguva yekupisa.
Liquid nitrogen inzvimbo inotonhora inotonhora. Nekuda kwehunhu hwayo hwakasiyana, nitrogen yemvura yakabhadharwa zvishoma nezvishoma uye ichizivikanwa nevanhu. Yave ichinyanya kushandiswa zvakanyanya mukupfuya mhuka, indasitiri yezvokurapa, indasitiri yechikafu, uye cryogenic research fields. Mune zvemagetsi, simbi, aerospace, kugadzira michina uye zvimwe zvinhu zvekushandisa zvave kuwedzera nekusimudzira.
Cryogenic superconducting
Superconductor yakasarudzika maitiro, zvekuti inogona kunge ichishandiswa zvakanyanya mumhando dzakasiyana siyana. Superconductor inowanikwa nekushandisa mvura nitrogen pachinzvimbo chemvura helium se superconducting refrigerant, iyo inovhura mashandisirwo eiyo superconducting tekinoroji munzvimbo dzakasiyana uye inoonekwa seimwe yehukuru hwesainzi zvigadzirwa muzana remakore rechi20.
Superconducting magineti levitation hunyanzvi ndeye superconducting ceramic YBCO, kana iyo superconducting zvinhu yakanyoroveswa kune yemvura tembiricha yenitrogen (78K, yakaenzana kusvika -196 ~ C), kubva kune yakajairwa shanduko kuenda kune superconducting mamiriro. Iyo magnetic field inogadzirwa neakadzivirirwa ikozvino inosundidzira kune renji remagineti, uye kana simba racho rakakura kupfuura huremu hwechitima, mota inogona kumiswa. Panguva imwecheteyo, chikamu chemagnetic field chakavharirwa mu superconductor nekuda kweiyo magnetic flux pinning effect panguva yekutonhora. Iyi inobata magineti inokwezvwa kusimba remagineti renjanji, uye nekuda kwezvose zviri zviviri kusemburwa nekukwezvwa, motokari inoramba yakaturikwa yakamira pamusoro penjanji. Mukupesana neyakajairwa mhedzisiro yekurambana kwepabonde-mumwe-kukwezvana pakati pemagineti, kudyidzana pakati pesuperconductor uye ekunze magineti ese ari maviri anosundira kunze uye anokwezva mumwe nemumwe, kuitira kuti zvese zviri zviviri superconductor uye magineti asingaperi anogona kuramba giravhiti yavo uye kumisa kana kurembera kumusoro pasi peumwe neumwe.
Electronic components kugadzira uye kuedza
Kuongorora kwemamiriro ekunze kushushikana ndeyekusarudza huwandu hwemhando yemamiriro ekunze, kuisa huwandu hwakakodzera hwekushushikana kwezvakatipoteredza kune zvikamu kana muchina wese, uye kukonzera kukanganisa kwemaitiro ezvikamu, kureva, kukanganisa mukugadzira uye kuisirwa, uye kupa kugadzirisa kana kutsiva. Ambient stress screening inobatsira kugamuchira tembiricha kutenderera uye zvisina tsarukano vibration. Temperature cycle bvunzo ndeyekugamuchira yakakwira tembiricha shanduko, hombe yekupisa kushushikana, kuitira kuti zvikamu zvezvinhu zvakasiyana, nekuda kwekushata kwejoinhi, iyo pachayo asymmetry, kukanganisa mukuita kunokonzerwa nedambudziko rakavanzika uye kutadza kwekare, gamuchira shanduko yekushisa ye5 ℃/ min. Muganhu tembiricha -40 ℃, +60 ℃. Kuwanda kwema cycles ndeye 8.Kusanganiswa kwakadaro kwezvakatipoteredza parameters kunoita kuti virtual welding, clipping parts, zvikamu zvehurema hwavo pachavo zvive pachena. Kune misa tembiricha kutenderera bvunzo, isu tinogona kufunga kugamuchirwa kwemabhokisi maviri nzira. Munharaunda iyi, kuongorora kunofanirwa kubatwa pamwero.
Liquid nitrogen inzira inokurumidza uye inobatsira yekudzivirira uye yekuyedza zvikamu zvemagetsi nemabhodhi edunhu.
Cryogenic ball milling hunyanzvi
Cryogenic planetary ball mill ndiyo liquid nitrogen gasi rinoramba richipinda muplanetary ball mill rine chivharo chekuchengetedza kupisa, mhepo inotonhora ichange iri high speed kutenderera kwekupisa kunogadzirwa nebhora rekugaya tangi real-time absorption, zvekuti bhora rekukuya tangi rine zvinhu, bhora rekukuya rinogara riri mune imwe nzvimbo yekuchema. Mu cryogenic nharaunda kusanganisa, kukuya kwakanaka, kugadzirwa kwechigadzirwa chitsva uye diki batch kugadzirwa kwezvinhu zvepamusoro-tech. Chigadzirwa chacho chiduku muhukuru, chakazara mukuita, chakakwirira mukuteerera, chakaderera mumheremhere, chinoshandiswa zvakanyanya mumishonga, indasitiri yemakemikari, kuchengetedzwa kwezvakatipoteredza, chiedza indasitiri, zvokuvakisa, metallurgy, ceramics, minerals nezvimwe zvikamu.
Green Machining unyanzvi
Cryogenic kucheka iko kushandiswa kweiyo cryogenic fluid senge mvura nitrogen, liquid carbon dioxide uye inotonhorera mhepo yakapfapfaidza kune yekucheka sisitimu yenzvimbo yekucheka, zvichikonzera nzvimbo yekucheka yemunharaunda cryogenic kana ultra-cryogenic state, uchishandisa iyo cryogenic brittleness yeworkpiece pasi pemamiriro e cryogenic, inovandudza workpiece yekucheka machinability, hupenyu hwechishandiso uye workpiece yepamusoro yemhando. Zvinoenderana nemusiyano wepakati yekutonhora, cryogenic yekucheka inogona kukamurwa kuita inotonhorera mhepo yekucheka uye yemvura nitrogen inotonhorera yekucheka. Cryogenic inotonhorera mhepo yekucheka nzira ndeyekupfapfaidza -20 ℃ ~ -30 ℃ (kana kunyange yakaderera) cryogenic mhepo inoyerera kune iyo yekugadzirisa chikamu chetipi rekushandisa, uye yakasanganiswa netrace plant lubricant (10 ~ 20m 1 paawa), kuitira kuti iite basa rekutonhora, kubvisa chip, lubrication. Kuenzaniswa nekucheka kwechinyakare, cryogenic kutonhora kucheka kunogona kuvandudza kutevedza, kugadzirisa workpiece pamusoro pemhando, uye kunenge kusasvibisa nharaunda. Nzvimbo yekugadzirisa yeJapan Yasuda Industry Company inobvuma kurongeka kweadiabatic air duct yakaiswa pakati pemotokari shaft uye cutter shaft, uye inotungamira zvakananga kune blade uchishandisa cryogenic inotonhorera mhepo ye -30 ℃.Urongwa uhwu hunovandudza zvikuru mamiriro ekucheka uye hunobatsira pakushandiswa kwemhepo inotonhora yekucheka teknolojia. Kazuhiko Yokokawa akaita tsvakiridzo pamhepo inotonhorera inotonhorera mukutenderedza nekugaya. Muchiyedzo chekugaya, mvura yekucheka yemvura, yakajairika tembiricha mhepo (+10 ℃) uye mweya inotonhorera (-30 ℃) yakashandiswa kuenzanisa simba. Mhedzisiro yacho yakaratidza kuti kusimba kwechishandiso kwakagadziridzwa zvakanyanya kana mweya unotonhorera wakashandiswa. Muyedzo yekutendeuka, chiyero chekupfeka chemhepo inotonhorera (-20 ℃) yakadzikira zvakanyanya pane iyo yemhepo yakajairika (+20 ℃).
Liquid nitrogen kutonhora yekucheka ine maviri akakosha maapplication. Imwe ndeye kushandisa bhodhoro dzvinyiriro kupfapfaidza mvura nitrogen yakananga munzvimbo yekucheka sekucheka mvura. Imwe yacho ndeyekutonhodza zvisina kunanga mudziyo kana workpiece nekushandisa evaporation cycle yemvura nitrogen pasi pekupisa. Iye zvino cryogenic cutting inokosha mukugadzirisa titanium alloy, high manganese simbi, simbi yakaoma uye zvimwe zvakaoma kugadzirisa zvinhu. KPRaijurkar yakagamuchira H13A carbide chishandiso uye yakashandisa mvura nitrogen kutenderera kutonhora chishandiso kuita cryogenic yekucheka zviyedzo pane titanium alloy. Mhedzisiro yebvunzo yakaratidza kuti zvichienzaniswa nemaitiro ekucheka echinyakare, kupfeka kwezvishandiso kwakabviswa pachena, tembiricha yekucheka yakaderedzwa ne30%, uye workpiece pamusoro machining mhando yakavandudzwa zvakanyanya. Wan Guangmin akagamuchira iyo isina kunanga kutonhora nzira yekuita cryogenic yekucheka kuyedza pane yakakwirira manganese simbi, uye mhedzisiro inotsanangurwa. Kana uchitora nzira yekutonhodza isina kunanga yekugadzira yakakwira manganese simbi pa cryogenic, simba rekushandisa rinobviswa, kupfeka kwechishandiso kunoderedzwa, zviratidzo zvekuomesa basa zvinovandudzwa, uye kunaka kwepamusoro kwechishandiso kunovandudzwa zvakare. Wang Lianpeng et al. yakatora nzira yekupfapfaidza nitrogen yemvura mune yakadzika-tembiricha machining yesimbi yakadzimwa 45 paCNC muchina maturusi, uye akataura nezve mhinduro dzebvunzo. Kusimba kwechishandiso uye workpiece yepamusoro mhando inogona kuvandudzwa nekutora mvura yenitrogen yekupfapfaidza nzira mune yakaderera-tembiricha machining yesimbi yakadzima 45.
Mumvura nitrogen inotonhora yekugadzirisa mamiriro, carbide zvinhu zvekubatanidza simba rekukotama, kuomarara kwekupwanyika uye kusagadzikana kwekuora, kusimba, kuomarara kunowedzera nekudziya kwakadzikira uye saka simende yekucheka carbide yekucheka chishandiso mune yemvura nitrogen kutonhora inogona kubatanidza yakanakisa yekucheka kuita, senge pakamuri tembiricha, uye kuita kwayo kunotemwa nehuwandu hwechikamu chinosunga. Kune yekumhanyisa simbi, ine cryogenic, kuoma kunowedzera uye simba rekuita rakaderera, asi zvakazara zvinogona kubatanidza kuita kurinani kwekucheka. Iye pane zvimwe zvinhu mu cryogenic kunatsiridza kwayo yekucheka machinability yakabata chidzidzo, kusarudzwa kweyakaderera kabhoni simbi AISll010, yakakwira kabhoni simbi AISl070, inotakura simbi AISIE52100, titanium alloy Ti-6A 1-4V, yakakanda aruminiyamu alloy A390 zvinhu zvishanu, kushandiswa kwekutsvakurudza uye kuongorora: Nekuda kwechishuwo chekugadzirisa, nekuda kwechido chekugadzirisa inowanikwa ne cryogenic cutting. Kune yakakwira kabhoni simbi uye inotakura simbi, tembiricha inokwira munzvimbo yekucheka uye chiyero chekupfeka chezvishandiso chinogona kudziviswa nekutonhorera kwenitrogen. Mukucheka kukanda aruminiyamu alloy, kushandiswa kwe cryogenic kutonhora kunogona kuvandudza kuoma kwechishandiso uye kuramba kwechishandiso kune silicon chikamu abrasive kupfeka kugona, mukugadziriswa kwetitanium alloy, panguva imwecheteyo cryogenic kutonhora chishandiso uye workpiece, inobatsira yakaderera yekucheka tembiricha uye kubvisa kemikari kuwirirana pakati petitanium uye chishandiso.
Zvimwe zvinoshandiswa zve nitrogen yemvura
Satellite yeJiuquan yakatumira chiteshi chemafuta chepakati kuti ibudise nitrogen yemvura, inosimudzira mafuta eroketi, inosundirwa mukamuri rinopisa nekumanikidza kukuru.
High tembiricha superconducting simba tambo. Inoshandiswa kuomesa pombi yemvura mukugadzirisa kwekukurumidzira. Inoshandiswa kune cryogenic kudzikamisa uye cryogenic quenching yezvinhu. Liquid nitrogen kutonhora mudziyo hunyanzvi (kuwedzera kwekupisa uye kutonhora kudonhedza zviratidzo muindasitiri application) inoshandiswa zvakanyanya. Liquid nitrogen cloud yekudyara unyanzvi. Liquid nitrogen drainage hunyanzvi hweiyo chaiyo-nguva mvura inodonha jet, inogara yakadzama tsvagiridzo. Adopt nitrogen pasi pevhu kudzima moto, moto unokurumidza kuparadzwa, uye bvisa kukuvadzwa kwekuputika kwegasi. Sei uchisarudza nitrogen yemvura: Nekuti inotonhora nekukurumidza kupfuura dzimwe nzira, uye isingaite makemikari nezvimwe zvinhu, inobata nzvimbo zvakanyanya uye inopa yakaoma mamiriro ekunze, inoenderana nemhoteredzo (yemvura nitrogen inonyungudika zvakananga mumhepo mushure mekushandiswa, pasina kusiya chero kusvibiswa), iri nyore uye iri nyore kushandisa.
HL Cryogenic Equipment
HL Cryogenic Equipmentiyo yakavambwa muna 1992 imhando yakabatana nayoHL Cryogenic Equipment Kambani Cryogenic Equipment Co., Ltd. HL Cryogenic Equipment yakazvipira dhizaini nekugadzira iyo Yepamusoro Vacuum Insulated Cryogenic Piping System uye inoenderana Nekutsigira Equipment kuti isangane nezvinodiwa zvakasiyana zvevatengi. Iyo Vacuum Insulated Pipe uye Flexible Hose inovakwa mune yakakwira vacuum uye yakawanda-layer multi-screen yakakosha insulated zvinhu, uye inopfuura neyakatevedzana yakanyanya kuomarara tekinoroji marapirwo uye yakakwirira vacuum kurapwa, iyo inoshandiswa kuendesa yemvura okisijeni, liquid nitrogen, liquid argon, liquid hydrogen, liquid helium, liquefied ethylene gasi LG yakanyungudutswa gasi.
Iyo yechigadzirwa yakatevedzana yePhase Separator, Vacuum Pipe, Vacuum Hose uye Vacuum Valve muHL Cryogenic Equipment Company, iyo yakapfuura nepakati peyakaomesesa yehunyanzvi kurapwa, inoshandiswa kuendesa okisijeni yemvura, liquid nitrogen, liquid argon, liquid hydrogen, liquid helium, LEG neLNG, uye zvigadzirwa izvi zvinoitirwa cryogenic tangi uye tangi inotonhora, etc. maindasitiri ekuparadzanisa mhepo, magasi, ndege, zvemagetsi, superconductor, machipisi, pharmacy, biobank, chikafu & chinwiwa, otomatiki musangano, kemikari engineering, iron & simbi, rabha, kugadzirwa kwezvinhu zvitsva uye tsvagiridzo yesainzi nezvimwe.
Nguva yekutumira: Nov-24-2021
