Nitrogen kua: Nitrogen roj hauv lub xeev ua kua. Inert, tsis muaj xim, tsis muaj ntxhiab, tsis muaj corrosive, tsis-flammable, tsis tshua muaj kub kub. Nitrogen tsim feem ntau ntawm cov huab cua (78.03% los ntawm ntim thiab 75.5% los ntawm qhov hnyav). Nitrogen yog inactive thiab tsis txhawb combustion. Frostbite tshwm sim los ntawm kev sib cuag endothermic ntau dhau thaum vaporization.
Cov kua nitrogen yog ib qho yooj yim txias qhov chaw. Vim nws cov khoom tshwj xeeb, kua nitrogen tau maj mam them nyiaj ntau thiab ntau dua thiab lees paub los ntawm tib neeg. Nws tau siv ntau dua thiab dav siv hauv tsiaj txhu, kev lag luam kho mob, kev lag luam zaub mov, thiab kev tshawb fawb cryogenic. Hauv electronics, metallurgy, aerospace, machinery manufacturing thiab lwm yam ntawm daim ntawv thov tau nthuav dav thiab tsim.
Cryogenic superconducting
Superconductor cov yam ntxwv tshwj xeeb, yog li nws yog qhov yuav tsum tau siv dav hauv ntau pawg. Superconductor tau txais los ntawm kev siv cov kua nitrogen es tsis txhob ua kua helium li superconducting refrigerant, uas qhib rau daim ntawv thov ntawm superconducting technology nyob rau hauv ib tug ntau yam thiab suav hais tias yog ib qho ntawm cov kev tshawb fawb inventions zoo nyob rau hauv lub xyoo pua 20th.
Superconducting magnetic levitation txawj yog superconducting ceramic YBCO, thaum cov khoom siv superconducting txias rau cov kua nitrogen kub (78K, proportional to -196 ~ C), los ntawm ib txwm hloov mus rau superconducting xeev. Cov hlau nplaum uas tsim los ntawm cov ntaub thaiv npog tam sim no thawb tawm ntawm txoj kev sib nqus, thiab yog tias lub zog loj dua qhov hnyav ntawm lub tsheb ciav hlau, lub tsheb tuaj yeem raug ncua. Nyob rau tib lub sijhawm, ib feem ntawm cov magnetic teb raug kaw nyob rau hauv lub superconductor vim qhov sib nqus flux pinning nyhuv thaum lub caij txias. Qhov kev sib nqus hlau nplaum no yog nyiam mus rau txoj kev sib nqus, thiab vim tias ob qho tib si repulsion thiab attraction, lub tsheb nyob ruaj nrees suspended saum tus khiav. Nyob rau hauv sib piv rau cov nyhuv ntawm tib-poj niam txiv repulsion thiab opposite-poj niam txiv attraction ntawm hlau nplaum, kev sib cuam tshuam ntawm superconductor thiab sab nraud magnetic teb ob leeg thawb tawm thiab attracts ib leeg, kom ob leeg superconductor thiab nyob mus ib txhis hlau nplaum tiv thaiv lawv tus kheej lub ntiajteb txawj nqus thiab ncua los yog dai pem hauv ntej ib leeg.
Electronic Cheebtsam tsim thiab kuaj
Kev ntsuam xyuas kev ntxhov siab ib puag ncig yog xaiv tus naj npawb ntawm cov qauv ib puag ncig, siv qhov tsim nyog ntawm ib puag ncig kev ntxhov siab rau cov khoom lossis tag nrho lub tshuab, thiab ua rau cov txheej txheem tsis xws luag ntawm cov khoom, uas yog, qhov tsis xws luag hauv cov txheej txheem ntawm kev tsim khoom thiab kev teeb tsa, thiab muab kho lossis hloov. Kev ntsuam xyuas kev ntxhov siab nyob ib puag ncig yog qhov tseem ceeb los lees txais qhov kub thiab txias thiab kev co random. Kev ntsuas kub ntawm lub voj voog yog lees txais kev hloov pauv ntawm qhov kub thiab txias, kev ntxhov siab loj, kom cov khoom sib txawv ntawm cov khoom sib txawv, vim kev sib koom ua ke tsis zoo, cov khoom siv tsis zoo, qhov tsis xws ntawm cov txheej txheem tshwm sim los ntawm cov teeb meem zais thiab agile tsis ua haujlwm, lees txais Kev hloov pauv kub ntawm 5 ℃ / min. Qhov ntsuas kub yog -40 ℃, + 60 ℃. Tus naj npawb ntawm cov voj voog yog 8.Qhov kev sib xyaw ua ke ntawm ib puag ncig tsis zoo ua rau cov vuam virtual, txiav qhov chaw, cov khoom ntawm lawv tus kheej qhov tsis xws luag pom pom tseeb dua. Rau qhov ntsuas kub ntawm lub voj voog loj, peb tuaj yeem xav txog qhov kev lees txais ntawm ob lub thawv txoj kev. Nyob rau hauv ib puag ncig no, kev tshuaj xyuas yuav tsum muaj nyob rau theem.
Cov kua nitrogen yog ib txoj hauv kev sai thiab muaj txiaj ntsig zoo ntawm kev tiv thaiv thiab kuaj cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob.
Cryogenic pob milling txuj ci
Cryogenic planetary pob zeb yog cov kua roj nitrogen tsis tu ncua nkag mus rau hauv lub ntiaj teb pob zeb nruab nrog lub npog tiv thaiv tshav kub, huab cua txias yuav muaj kev kub ceev ntawm cov cua kub uas tsim los ntawm lub pob sib tsoo tank lub sijhawm nqus, kom lub pob sib tsoo. tank uas muaj cov ntaub ntawv, sib tsoo pob yog ib txwm nyob rau hauv ib qho chaw cryogenic. Nyob rau hauv ib puag ncig kev sib xyaw ua ke, kev sib tsoo zoo, kev tsim khoom tshiab thiab kev tsim khoom me me ntawm cov khoom siv high-tech. Cov khoom yog me me, tag nrho cov nyhuv, siab ua raws, tsis tshua muaj suab nrov, dav siv hauv tshuaj, tshuaj lom neeg kev lag luam, kev tiv thaiv ib puag ncig, lub teeb kev lag luam, cov khoom siv hauv tsev, metallurgy, ceramics, minerals thiab lwm yam.
Green machining kev txawj ntse
Cryogenic txiav yog siv cov kua dej cryogenic xws li kua nitrogen, kua carbon dioxide thiab cov cua txias txau rau hauv qhov txiav ntawm qhov chaw txiav, ua rau hauv cheeb tsam txiav ntawm lub zos cryogenic lossis ultra-cryogenic xeev, siv lub cryogenic brittleness ntawm lub workpiece. nyob rau hauv tej yam kev mob cryogenic, txhim kho lub workpiece txiav machinability, cuab yeej lub neej thiab workpiece nto zoo. Raws li qhov sib txawv ntawm qhov nruab nrab cua txias, kev txiav cryogenic tuaj yeem muab faib ua cua txias txiav thiab kua nitrogen txias txiav. Cryogenic txias cua txiav txoj kev yog los ntawm kev txau -20 ℃ ~ -30 ℃ (los yog qis dua) cryogenic airflow mus rau qhov ua ib feem ntawm lub cuab tam, thiab tov nrog ib tug kab cog lubricant (10 ~ 20m 1 ib teev), thiaj li mus ua si. lub luag hauj lwm ntawm txias, nti tshem tawm, lubrication. Piv nrog rau cov tsoos txiav, cryogenic txias txiav tuaj yeem txhim kho kev ua raws, txhim kho workpiece nto zoo, thiab yuav luag tsis muaj kuab paug rau ib puag ncig. Lub chaw ua haujlwm ntawm Nyij Pooj Yasuda Kev Lag Luam Tuam Txhab lees txais cov txheej txheem ntawm adiabatic cua duct tso rau hauv nruab nrab ntawm lub cev muaj zog thiab txiav ncej, thiab ncaj qha ua rau cov hniav siv cov cua txias cua ntawm -30 ℃ .Qhov kev npaj no zoo heev txhim kho cov kev txiav. thiab muaj txiaj ntsig zoo rau kev siv tshuab txias cua txias. Kazuhiko Yokokawa tau tshawb fawb txog huab cua txias hauv kev tig thiab milling. Hauv kev sim milling, cov dej hauv paus txiav cov kua dej, cua kub ib txwm (+ 10 ℃) thiab cua txias (-30 ℃) tau siv los sib piv cov quab yuam. Cov txiaj ntsig tau pom tias cov cuab yeej ua haujlwm tau zoo dua qub thaum siv cua txias. Hauv kev ntsuas tig, lub cuab yeej hnav tus nqi ntawm huab cua txias (-20 ℃) yog qhov qis dua li huab cua ib txwm (+ 20 ℃).
Cov kua nitrogen txias txiav muaj ob daim ntawv thov tseem ceeb. Ib qho yog siv lub raj mis siab los txau cov kua nitrogen ncaj qha rau hauv qhov chaw txiav xws li txiav cov kua dej. Lwm qhov yog ua kom tsis ncaj qha rau cov cuab yeej lossis cov khoom ua haujlwm los ntawm kev siv lub voj voog evaporation ntawm cov kua nitrogen hauv qab cua sov. Tam sim no cryogenic txiav yog ib qho tseem ceeb hauv kev ua cov titanium alloy, siab manganese steel, hardened hlau thiab lwm yam nyuaj rau txheej txheem cov ntaub ntawv. KPRaijurkar tau txais H13A carbide cuab yeej thiab siv cov kua nitrogen lub voj voog txias kom ua tiav cov kev sim cryogenic ntawm titanium alloy. Cov txiaj ntsig kev sim tau pom tias piv nrog cov txheej txheem txiav ib txwm, cov cuab yeej hnav tau raug tshem tawm kom pom tseeb, txiav qhov kub thiab txias tau txo los ntawm 30%, thiab qhov chaw ua haujlwm ntawm qhov chaw ua haujlwm tau zoo heev. Wan Guangmin tau siv txoj hauv kev ua kom txias tsis ncaj los ua cov kev sim cryogenic txiav ntawm cov hlau manganese siab, thiab cov txiaj ntsig tau tawm tswv yim. Thaum siv txoj kev ua kom txias tsis ncaj rau cov txheej txheem siab manganese steel ntawm cryogenic, lub cuab yeej quab yuam raug tshem tawm, cov cuab yeej hnav raug txo, cov cim ua haujlwm tawv tau txhim kho, thiab qhov zoo ntawm qhov chaw ua haujlwm kuj tseem txhim kho. Wang Lianpeng et al. tau txais cov txheej txheem ntawm cov kua nitrogen txau nyob rau hauv qhov kub thiab txias machining ntawm quenched steel 45 ntawm CNC tshuab cov cuab yeej, thiab tawm tswv yim txog cov txiaj ntsig kev xeem. Cov cuab yeej siv tau ntev thiab ua haujlwm zoo tuaj yeem txhim kho los ntawm kev siv cov kua nitrogen txau txoj hauv kev kub-kub machining ntawm quenched steel 45.
Nyob rau hauv cov kua nitrogen txias ua lub xeev, cov khoom siv carbide txuas lub zog dabtsi yog khoov, tawg toughness thiab corrosion kuj, lub zog, hardness nce nrog qhov kub thiab txias yog li ntawd cemented carbide txiav cov cuab yeej hauv cov kua nitrogen txias tuaj yeem txuas cov kev ua haujlwm zoo heev, zoo li nyob rau hauv chav tsev kub, thiab nws cov kev ua tau zoo yog txiav txim los ntawm tus naj npawb ntawm cov binding theem. Rau kev kub ceev steel, nrog rau cov cryogenic, qhov hardness nce thiab qhov cuam tshuam lub zog yog tsawg, tab sis tag nrho tuaj yeem txuas kev ua haujlwm zoo dua. Nws ntawm qee cov ntaub ntawv hauv kev txhim kho cryogenic ntawm nws txoj kev txiav machinability tau muaj kev tshawb fawb, xaiv cov pa roj carbon tsawg AISl010, siab carbon steel AISl070, bearing steel AISIE52100, titanium alloy Ti-6A 1-4V, cam khwb cia txhuas alloy A390 tsib cov ntaub ntawv, kev siv Kev tshawb fawb thiab kev ntsuam xyuas: Vim lub brittleness zoo heev ntawm cryogenic, qhov xav tau machining tau tuaj yeem tau los ntawm kev txiav cryogenic. Rau siab carbon steel thiab bearing steel, kub nce nyob rau hauv tej cheeb tsam thiab cov cuab yeej hnav tus nqi yuav tsum tau txwv los ntawm cov kua nitrogen txias. Hauv kev txiav casting aluminium alloy, daim ntawv thov ntawm cryogenic txias tuaj yeem txhim kho cov cuab yeej hardness thiab cov cuab yeej ua haujlwm rau silicon theem abrasive hnav muaj peev xwm, hauv kev ua cov titanium alloy, tib lub sij hawm cryogenic txias cuab yeej thiab workpiece, muaj txiaj ntsig tsawg txiav kub thiab tshem tawm cov chemical affinity ntawm titanium thiab cov khoom siv.
Lwm yam kev siv cov kua nitrogen
Lub Jiuquan satellite tau xa mus rau qhov chaw nres tsheb tshwj xeeb hauv nruab nrab los tsim cov kua nitrogen, lub tshuab hluav taws xob rau cov roj foob pob hluav taws, uas raug thawb mus rau hauv lub combustion chamber ntawm kev kub siab.
High kub superconducting fais fab cable. Nws yog siv los khov cov kav dej ua kua hauv kev saib xyuas xwm txheej ceev. Siv rau cryogenic stabilization thiab cryogenic quenching ntawm cov ntaub ntawv. Cov cuab yeej ua kua nitrogen ua kom txias (kub nthuav dav thiab cov cim kev cog lus txias hauv daim ntawv thov kev lag luam) kuj tau siv dav. Kua nitrogen huab seeding txuj ci. Cov kua nitrogen tso kua dej kev txawj ntse ntawm lub sijhawm tiag tiag cov kua dej poob dav hlau, yog kev tshawb fawb tas li hauv qhov tob. Txais siv nitrogen underground hluav taws tua hluav taws, hluav taws yuav sai sai, thiab tshem tawm cov kev puas tsuaj ntawm cov pa tawg. Vim li cas thiaj xaiv cov kua nitrogen: vim tias nws txias sai dua li lwm txoj hauv kev, thiab tsis hnov mob chemically nrog lwm yam tshuaj, ua rau muaj qhov chaw qhuav heev, nws yog ib puag ncig tus phooj ywg (kua nitrogen yog ncaj qha mus rau hauv cov huab cua tom qab siv, tsis tas yuav tawm hauv qhov chaw. pollution), nws yog qhov yooj yim thiab yooj yim siv.
HL Cryogenic khoom
HL Cryogenic khoomuas tau tsim nyob rau hauv 1992 yog ib hom lag luam koom nrogHL Cryogenic Equipment Company Cryogenic Equipment Co., Ltd. HL Cryogenic Equipment tau cog lus rau kev tsim thiab tsim khoom ntawm High Vacuum Insulated Cryogenic Piping System thiab cov cuab yeej txhawb nqa kom tau raws li ntau yam kev xav tau ntawm cov neeg siv khoom. Lub Nqus Tsev Insulated Yeeb Nkab thiab Flexible Hose yog tsim nyob rau hauv lub tshuab nqus tsev siab thiab ntau txheej txheej multi-screen tshwj xeeb insulated cov ntaub ntawv, thiab dhau los ntawm cov txheej txheem nruj heev thiab kev kho lub tshuab nqus tsev siab, uas yog siv rau kev hloov cov kua oxygen, kua nitrogen. , kua argon, kua hydrogen, kua helium, liquefied ethylene gas LEG thiab liquefied natural gas LNG.
Cov khoom series ntawm Phase Separator, Nqus Yeeb Nkab, Nqus Hose thiab Nqus Valve hauv HL Cryogenic Equipment Company, uas dhau los ntawm cov kev kho mob nruj heev, yog siv rau kev hloov cov kua oxygen, kua nitrogen, kua argon, kua hydrogen, kua. helium, LEG thiab LNG, thiab cov khoom lag luam no tau txais kev pabcuam rau cov khoom siv cryogenic (xws li cryogenic cia tank, dewar thiab coldbox thiab lwm yam) hauv kev lag luam ntawm huab cua sib cais, gases, aviation, electronics, superconductor, chips, pharmacy, biobank, zaub mov & dej haus, automation los ua ke, tshuaj engineering, hlau & hlau, roj hmab, khoom siv tshiab tsim thiab kev tshawb fawb thiab lwm yam.
Post lub sij hawm: Nov-24-2021
