Cov cua kub welding tseem hu ua cua kub vuam. Compressed cua los yog inert roj (feem ntau nitrogen) yog rhuab mus rau qhov yuav tsum tau kub los ntawm lub rhaub nyob rau hauv lub vuam phom thiab txau mus rau lub yas nto thiab vuam sawb, kom ob tug yog melted thiab ua ke nyob rau hauv ib tug me me siab. Cov yas uas nkag siab rau cov pa oxygen (xws li polyphthalamide, thiab lwm yam) yuav tsum siv cov roj inert raws li qhov nruab nrab cua sov, thiab lwm yam yas feem ntau tuaj yeem siv cov cua lim. Txoj kev no feem ntau yog siv rau vuam yas xws li polyvinyl chloride, polyethylene, polypropylene, polyoxymethylene, polystyrene, thiab carbonate.
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Kub siab welding siv cua sov thiab siab los nias cov hlau hlau thiab cov hlau vuam cheeb tsam ua ke. Lub hauv paus ntsiab lus yog ua kom cov hlau nyob rau hauv lub vuam cheeb tsam plastically deform los ntawm cua sov thiab siab, thiab nyob rau tib lub sij hawm rhuav tshem cov oxide txheej ntawm lub siab welding interface, thiaj li hais tias qhov kev sib cuag nto ntawm lub siab vuam hlau thiab cov hlau mus txog lub atomic gravitational. ntau yam, yog li tsim kev nyiam ntawm cov atoms thiab ua tiav lub hom phiaj ntawm kev sib txuas.
Kub phaj vuam siv lub phaj kos qauv, thiab cov cua sov ntawm lub tshuab cua sov phaj yog hloov mus rau qhov chaw vuam ntawm sab sauv thiab qis yas cua sov qhov chaw los ntawm hluav taws xob cua sov. Qhov saum npoo yog yaj, thiab tom qab ntawd lub tshuab cua sov phaj yog sai sai tshem tawm. Tom qab cov cua sov sab sauv thiab sab qis yog rhuab, qhov chaw molten yog fused, solidified, thiab ua ke rau hauv ib qho. Tag nrho lub tshuab yog ib daim ntawv thav duab, muaj peb daim hlau: lub sab sauv template, lub sab template, thiab cov template kub, thiab yog nruab nrog ib tug kub pwm, sab sauv thiab qis yas txias pwm, thiab hom kev txiav txim yog pneumatic tswj.
Ultrasonic hlau welding siv high-frequency vibration nthwv dej kom xa mus rau ob qhov chaw hlau yuav tsum tau welded. Nyob rau hauv lub siab, ob lub hlau nto rub tawm ib leeg los ua ib qho fusion ntawm cov txheej molecular. Nws qhov zoo yog ceev ceev, txuag hluav taws xob, siab fusion zog, zoo conductivity, tsis muaj sparks, thiab ze rau qhov txias txias; Nws qhov tsis zoo yog tias cov hlau welded tsis tuaj yeem tuab heev (feem ntau tsawg dua lossis sib npaug li 5 hli), qhov vuam txoj haujlwm tsis tuaj yeem loj dhau, thiab yuav tsum muaj siab.
Laser welding yog ib qho kev siv tau zoo thiab meej vuam txoj kev uas siv lub tshuab hluav taws xob muaj zog-density laser beam ua qhov cua sov. Nws yog ib qho tseem ceeb ntawm kev siv cov khoom siv laser ua tshuab. Feem ntau, lub teeb laser txuas ntxiv yog siv los ua kom tiav cov khoom sib txuas. Nws cov txheej txheem metallurgical lub cev zoo ib yam li electron beam welding, uas yog, lub zog hloov tshuab ua tiav los ntawm "qhov tseem ceeb-qhov" qauv. Qhov sib npaug ntawm qhov sib npaug ntawm cov kab noj hniav yog li 2500 ° C, thiab cov cua sov tau hloov los ntawm cov phab ntsa sab nrauv ntawm cov kab noj hniav kub kom yaj cov hlau nyob ib puag ncig cov kab noj hniav. Lub qhov tseem ceeb yog ntim nrog cov cua kub kub uas tsim los ntawm cov evaporation tas li ntawm cov khoom siv phab ntsa hauv qab irradiation ntawm cov nqaj.
Lub nqaj txuas ntxiv nkag mus rau hauv lub qhov tseem ceeb, thiab cov khoom siv sab nraud ntawm lub qhov tseem ceeb ntws tsis tu ncua. Raws li cov nqaj txav mus, lub qhov tseem ceeb yog ib txwm nyob hauv lub xeev ruaj khov. Cov hlau molten sau qhov sib txawv sab laug tom qab qhov keyhole raug tshem tawm thiab condenses, thiab cov weld yog tsim.
Brazing yog ib txoj kev vuam nyob rau hauv uas ib tug molten muab tub lim (cov khoom siv brazing) nrog ib tug qis melting point tshaj lub workpieces yuav tsum tau kev cob cog rua yog rhuab mus rau ib tug kub ntawm lub melting point kom nws muaj kua txaus kom puv qhov chaw ntawm ob workpieces los ntawm capillary. kev txiav txim (hu ua wetting), thiab tom qab ntawd ob qho tib si sib koom ua ke tom qab nws solidifies. Kev lig kev cai hauv Tebchaws Meskas, qhov kub siab tshaj 800 ° F (427 ° C) yog hu ua brazing (hard soldering), thiab kub hauv qab 800 ° F (427 ° C) yog hu ua soft soldering (soft soldering).
Kev tuav welding yog ib txoj kev vuam uas ua los ntawm cov khoom siv tes tuav, vuam phom lossis vuam clamp.
Resistance welding yog txheej txheem tsim khoom thiab thev naus laus zis uas siv cua sov los koom nrog cov hlau lossis lwm yam khoom siv thermoplastic xws li cov yas. Nws yog ib txoj kev vuam los ntawm kev siv lub siab los ntawm electrodes tom qab lub workpieces tau sib sau ua ke thiab siv cov hluav taws xob tiv thaiv los ntawm qhov tam sim no dhau los ntawm kev sib cuag ntawm qhov sib txuas thiab qhov chaw nyob ib sab.
Kev sib txhuam welding yog ib qho khoom siv vuam txheej txheem uas siv cov khoom siv hluav taws xob ua lub zog. Nws siv cov cua sov uas tsim los ntawm kev sib txhuam ntawm lub ntsej muag kawg ntawm lub workpieces kom lawv ncav cuag lub xeev yas, thiab tom qab ntawd sab saum toj forging yog siv los ua kom tiav qhov vuam.
Electroslag vuam siv cov hluav taws xob tiv thaiv hluav taws xob los ntawm qhov tam sim no dhau los ntawm cov slag ua qhov cua sov kom yaj cov khoom siv hlau thiab cov khoom siv hauv paus, thiab tom qab solidification, muaj kev sib txuas ntawm cov hlau atoms. Thaum pib vuam, vuam hlau thiab vuam zawj yog luv luv los pib lub arc, thiab ib qho me me ntawm cov khoom flux txuas ntxiv. Lub tshav kub ntawm lub arc yog siv los yaj nws los ua kua slag. Thaum lub slag ncav cuag ib qhov tob, qhov ceev ceev ntawm cov vuam hlau yog nce, thiab qhov voltage yog txo, yog li ntawd lub vuam hlau yog muab tso rau hauv lub slag pas dej ua ke, lub arc yog extinguished, thiab electroslag vuam txheej txheem yog qhib. Electroslag welding feem ntau suav nrog melting nozzle electroslag vuam, uas tsis yog-melting nozzle electroslag vuam, hlau electrode electroslag vuam, phaj electrode electroslag vuam, thiab lwm yam. weld yog yooj yim rau overheat, weld hlau yog ntxhib crystalline cam khwb cia qauv, qhov cuam tshuam toughness yog tsawg, thiab weldment feem ntau yuav tsum tau normalized thiab tempered tom qab vuam.
High-frequency welding siv cov khoom tiv thaiv tshav kub ua lub zog. Thaum lub sij hawm vuam, cov hluav taws xob ua haujlwm tau tsim los ntawm cov khoom siv hluav taws xob ntau zaus hauv qhov chaw ua haujlwm yog siv los ua kom sov qhov chaw ntawm qhov chaw ua haujlwm vuam mus rau lub molten los yog ze li ntawm lub xeev yas, thiab tom qab ntawd (lossis tsis) kev ntxhov siab yog siv los ua kom tiav cov hlau sib txuas.
Kub yaj yog ib hom kev sib txuas uas yog tsim los ntawm cua sov qhov chaw rau lawv (kua) melting point.
Post lub sij hawm: Lub Xya hli ntuj-29-2024
