Dab tsi yog qhov txawv ntawm qhov puv tempered thiab ib nrab tempered iav

Tempered iav (tag nrho tempered) yog ib hom prestressed iav. Txhawm rau txhim kho nws lub zog, peb feem ntau siv cov tshuaj los yog lub cev txoj hauv kev los tsim kom muaj kev ntxhov siab ntawm lub iav nto. Thaum lub iav raug rau sab nraud quab yuam, nws thawj zaug tawm tsam qhov kev ntxhov siab saum npoo, uas ua rau nws txoj kev thauj khoom zoo dua -cov kabmob muaj peev xwm thiab tensile lub zog.

Tempered iav muaj ob lub ntsiab zoo. Ua ntej, nws lub zog yog ob peb zaug siab dua li cov iav zoo tib yam - nws lub zog dabtsi yog khoov yog 3 mus rau 5 npaug ntawm cov iav zoo tib yam, thiab nws qhov kev cuam tshuam yog 5 txog 10 npaug siab dua. Thaum ua kom muaj zog, nws kuj txhim kho kev nyab xeeb. Kev nyab xeeb hauv kev siv yog qhov txiaj ntsig thib ob ntawm lub cev tempered iav. Nws muaj peev xwm nce ntxiv- cov kabmob muaj peev xwm txo qis nws qhov tsis muaj zog, txawm tias cov iav tempered tawg, nws tawg mus rau hauv me me, tsis yog{10}} tawg tawg, uas ua rau muaj kev phom sij rau tib neeg lub cev. Tsis tas li ntawd, tempered iav 'tsis kam mus rau qhov hloov pauv kub tam sim ntawd yog 2 mus rau 3 npaug zoo dua li iav zoo tib yam. Feem ntau nws tuaj yeem tiv taus qhov kub sib txawv ntawm ntau tshaj 150 degree, uas yog qhov zoo heev los tiv thaiv thermal tawg.

Thaum tshav kub kub- khov iav (ib nrab tempered), tseem hu ua thermally reinforced iav, yog ib hom ntawm cov iav tiaj tiaj thiab tempered iav. Nws tau txais lub zog siab ntawm cov iav tempered thaum zam qhov tom kawg qhov tsis zoo, xws li kev ua haujlwm tsis zoo, yooj yim rau tus kheej - tawg, thiab ua tiav tawg ib zaug.

Thaum tshav kub- khov iav tawg, nws tawg radially los ntawm qhov chaw ntawm qhov tawg, feem ntau tsis muaj tangential tawg nthuav, yog li nws tuaj yeem nyob twj ywm thiab tsis tawg tom qab tawg. Hauv kev tsim kho, cua sov- iav muaj zog yog tsim rau cov kab hlau rhuav phab ntsa thiab cov qhov rais sab nraud, nws tuaj yeem ua rau cua sov- muaj zog iav coated, thiab nws cov duab distortion zoo dua li cov iav tempered.

Txawm li cas los xij, nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias qhov cua sov- khov kho iav tsis raug cais raws li iav kev nyab xeeb. Vim tias ib zaug nws ntog, nws tseem tuaj yeem tsim cov tawg tawg uas yuav ua rau tib neeg raug mob, yog li nws tsis tuaj yeem siv rau lub teeb lossis lub sijhawm uas tib neeg yuav tshwm sim. Qhov saum npoo compressive kev ntxhov siab ntawm cov cua sov- khov kho iav yog li ntawm 24MPa txog 69MPa, thaum lub iav tempered yog ntau dua 69MPa. Cov txheej txheem ntawm cov cua sov- khov kho iav yog tib yam li cov iav tempered, nrog rau qhov sib txawv tsuas yog cua siab ntawm qhov chaw nres tsheb quenching. Nws tsis kam mus rau qhov hloov pauv tam sim ntawd kuj qis dua li ntawm cov iav tempered.