Vuam yog txheej txheem tseem ceeb hauv cov txheej txheem tsim khoom. Muaj ntau txoj kev vuam, thiab nws yog ib qho tsim nyog los xaiv txoj kev vuam tsim nyog raws li cov khoom thiab cov khoom siv. Lub hauv paus ntsiab lus ua raws li kev xaiv ntawm vuam txoj kev yog los xyuas kom meej qhov zoo ntawm welded pob qij txha, siab ntau lawm efficiency, yooj yim khiav lag luam, tsis muaj nqi, thiab lwm yam. Ntawm lawv, kom ntseeg tau qhov zoo ntawm weld yuav tsum yog thawj qhov tseem ceeb.
Titanium muaj cov khoom siv tshuaj lom neeg thiab muaj kev sib raug zoo rau oxygen thiab nitrogen hauv huab cua. Ntawm qis dua kub, titanium cuam tshuam nrog oxygen los ua cov yeeb yaj kiab dense, thiab tom qab ntau tshaj li 600 qhov kub thiab pib nqus cov pa thiab yaj nws rau hauv titanium. Thaum qhov kub thiab txias dua, qhov kev ua ntawm titanium nce ntau heev, thiab nws reacts hnyav nrog oxygen los tsim titanium oxides. Titanium pib nqus hydrogen saum 300 degree thiab nitrogen saum 700 degree. Raws li qhov tshwm sim ntawm kev sib kis ntawm titanium los ntawm oxygen thiab nitrogen, titanium nce nws lub zog thiab hardness thaum nws plasticity txo. Oxygen cuam tshuam ntau dua li nitrogen.
Thaum cov feem ntau ntawm hydrogen hauv titanium yog {{0}}}01% ~ 0.05%, qhov cuam tshuam ntawm cov hlau vuam yuav txo qis, tab sis cov yas yuav txo qis dua. Qhov no qhia tau hais tias lub brittleness (hydrogen embrittlement) tshwm sim los ntawm hydrides yog qhia. Nyob rau hauv tus txheej txheem ntawm fusion vuam, lub pas dej molten ua zoo li lub cub tawg me me, thiab cov hlau molten raug rau cov cua. Yog tias cov kev tiv thaiv tsis raug coj los cais cov hlau molten los ntawm huab cua, cov khoom siv roj xws li oxygen, nitrogen, thiab hydrogen yuav raug muab tso rau hauv titanium los tsim cov oxides los yog nitrides, uas ua rau txo qis ntawm vuam hlau plasticity, qhov nce ntawm tensile lub zog, thiab nyob rau hauv loj heev, brittle fracture yuav tshwm sim, thiab lub plasticity yog sib npaug zos rau 0. Thaum titanium vuam, sim siv ib tug softer vuam specification, uas yog, siv tsawg vuam kab zog thiab ceev cua txias npaum li cas.
Hu rau: Catherine
Email:catherine@hiriger.com
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