I-nqaj yog siv nyob rau hauv yuav luag txhua qhov chaw tsim kho niaj hnub, ob qho tib si kev lag luam thiab pej xeem. Nrog rau qhov tsis tshua muaj lub ntiajteb txawj nqus, lawv muaj lub peev xwm thauj khoom siab rau deflection, uas tso cai rau koj kom faib cov khoom zoo ntawm cov qauv kev txhawb nqa. Cov khoom siv hlau no yog tsim los ntawm dov (zoo li cov hlau, kub dov I-beam) los yog vuam. Hauv ntu ntu, lawv yog H-zoo li tus qauv ntawm phab ntsa thiab ob lub rhawv perpendicular rau nws. Cov txee tuaj yeem ua rau sab hauv sloped rau kev txhawb nqa ntxiv. Cov khoom zoo li no tsim nyog rau kev txhawb nqa nrog kev txhawb nqa ntawm kuv lub shafts (Series C nrog txoj kab nqes ntawm 16%) thiab rau kev teeb tsa ntawm cov khoom siv hluav taws xob (Series M nrog txoj kab nqes ntawm 12%).
Rolled I-beam tseem hu ua I-beam. Cov cheeb tsam tseem ceeb ntawm kev siv cov khoom siv hlau no yog tsim cov plag tsev, cov qauv choj, cov khoom siv hluav taws xob, kev txhawb nqa thiab kab. Nyob ntawm lub hom phiaj ntawm cov qauv tsim, I-beam steel tuaj yeem xaiv rau cov khoom sib txawv. Structurely, I-beams txawv nyob rau hauv thicknesscov phab ntsa thiab cov txee, qhov chaw ntawm cov npoo ntawm cov txee (lawv cov npoo sab hauv tuaj yeem ua tib yam lossis muaj txoj kab nqes). Thaum xaiv, txoj kev tsim khoom, lub hom phiaj thiab cov kev ntsuas tsis tseem ceeb.
I-nqaj hlau tuaj yeem ua tau raws li qhov yuav tsum tau muaj ntawm lub xeev cov qauv (GOST 8239 - 89, GOST 19425 - 74, GOST 26020 - 83 thiab lwm yam), thiab ua raws li cov lus qhia ntawm cov chaw tsim khoom.. Cov khoom nyob rau hauv cov ntaub ntawv ntawm dov yog cov qauv carbon steels zoo tib yam. Xws li cov qauv hlau zoo li welded I-beam yog tsim los ntawm cov hlau tsis tshua muaj hlau rau cov qauv welded.
Muaj ntau hom I-nqaj nrog lub ntsej muag flange: ib txwm (B), columnar (K), dav-txee (W), ib txwm (DB), ntxiv series (D thiab LSH). Ib qho I-beam tsim raws li cov qauv, nyob ntawm lub hom phiaj, muaj qhov ntev ntawm 4 mus rau 12 m (txog 24 m raws li kev pom zoo nrog cov neeg siv khoom). Yuav ua tau siab (A) lossis ib txwm (B) dov qhov tseeb.
Welded steel I-beams yog tsim los ntawm cov ntawv hlau hauv ntau theem. Ua ntej, qhov khoob ntawm qhov yuav tsum tau ua los ntawm kev txiav lawv los ntawm cov hlau, ces cov npoo yog milled. Cov strips npaj tau xa los ntawm crane mus rau lub conveyor, crimped thiab scalded los ntawm ib tug tsis siv neeg installation. Tsis tas li ntawd, cov khoom yog dov rau ntawm lub zeb tshwj xeeb kom tshem tawm qhov tsis xws luag thiab ua tiav ntawm cov nroj tsuag tua-blasting kom tshem tawm cov kab mob. Qhov zoo ntawm cov welded I-nqaj yuav tsum ua raws li cov kev cai ntawm GOST 23118-99 thiab GOST 26020-83 (los yog nws cov kev tsis sib haum xeeb nrog cov neeg siv khoom ua ntej).
I-beams ua rau nws muaj peev xwm ua kom lub teeb hnyav hnyav los ntawm 30% piv nrog cov kev txhawb nqa kub. Pre-sizing cov kab teeb tseem ceeb txo cov khoom pov tseg. Qhov tsis zoo ntawm I-beams suav nrog qhov tsis zoo rau kev xeb yog tias tsis muaj cov txheej txheem tiv thaiv, nrog rau kev xav tau rau cov cuab yeej tshwj xeeb, yam tsis muaj qhov tsis tuaj yeem txuas.
