Txoj hlua khi ncaj ncaj yog cov txheej txheem tseem ceeb hauv kev tsim cov kav hlau ncaj ncaj. Tshwj xeeb tshaj yog rau API cov qauv nrog cov kev xav tau zoo thiab cov kav dej, cov kav dej tshwj xeeb rau cov tshuab thiab khoom siv. Cov kav hlau no tsis yog tsuas yog muaj cov kev cai nruj hauv cov hlau thiab cov welds, tab sis kuj muaj cov kab ncaj nraim ntawm cov kav hlau. Nws yuav tsum tau hais tias vim hais tias qhov sib txawv ntawm linearity yog ncaj qha ntsig txog kev ua, kev sib txuas, thiab kev sib tw ntawm lub raj thiab cov yeeb nkab qhov ntawm lub raj thiab lub raj conveyor.
Muaj ob hom kev ua cov raj uas twb muaj lawm - xaus lub tsheb -kev sib hloov thiab cov cuab yeej tig. Feem ntau lub tsheb txhob lo lo ntxhuav siv lub raj tig, uas yuav tsum tau ntau dua linearity ntawm cov yeeb nkab steel.
Muaj ntau qhov laj thawj rau kev khoov ntawm cov yeeb nkab steel, xws li cov teebmeem kub ntawm vuam seams thaum vuam, eccentricity ntawm kev tsim, nrog rau compression, qhov tsis txaus ntawm lub zog khoov, thiab lwm yam. Tab sis hauv paus, khoov yog lub luag haujlwm ntawm kev ntxhov siab hauv cov yeeb nkab steel. Yooj yim muab, khoov yog qhov tsis sib xws. Yog li, puas tsis muaj kev ntxhov siab sab hauv ntawm cov kav hlau ncaj ncaj? tsis muaj. Cov yeeb nkab steel ncaj kuj muaj kev ntxhov siab sab hauv, tab sis qhov kev ntxhov siab sab hauv ntawm lub raj ncaj qha yog tsawg dua.
Internal stress yog dab tsi? Kub thiab sab nraud quab yuam cuam tshuam rau kev sib cuam tshuam ntawm cov molecule thaum deformation. Thaum cov yeeb nkab steel yog tsim thiab welded, qhov vuam kub kuj tseem cuam tshuam los ntawm kev cuam tshuam ntawm sab nraud tsim khoov.
Qhov hla ntawm cov yeeb nkab steel yog lub nplhaib-zoo li tus, uas yuav ua rau muaj ob qho kev nyuaj siab ntawm lub nplhaib no: mus rau lub nplhaib-shaped quab yuam thiab perpendicularity ntawm lub nplhaib-zoo li tus duab. Cov kev ntxhov siab thaum uas tig mus yuav ua rau lub raj tsis puag ncig; ntsug txoj kev nyuaj siab yuav ua rau lub raj khoov. Yog li ntawd, muaj cov txheej txheem txias txias thaum lub sij hawm tsim cov kav hlau ncaj, lub hom phiaj yog kom tshem tawm cov kev ntxhov siab sab hauv ntawm cov yeeb nkab steel thiab ua kom muaj kev siv cov kav hlau ncaj.
Cov yeeb nkab uas yuav tsum tau ncaj nraim los ntawm cov khoom noj ntawm lub tshuab sab laug kawg (los yog txoj cai kawg) raug xa mus rau cov menyuam qis ntawm lub tshuab ncaj, thiab cov menyuam sab saud yuav siv zog tuav cov yeeb nkab, nres ntawm qhov chaw sib txuas. Lub sab sauv thiab sab yob yog tilted nrog ib lub kaum ntse ntse nrog lub axis ntawm lub raj ncaj.
Peb sab saum toj rollers tau nias rau ntawm cov kav dej hauv qab kev txiav txim ntawm lawv cov hydraulic kheej kheej. Ob lub voj voog qis tau tsav los ntawm lawv cov hydraulic motors tig, tsav cov kav dej kom tig lub axis thiab txav mus raws cov kev taw qhia axial. Hloov cov kev taw qhia kev sib hloov ntawm hydraulic lub cev muaj zog los hloov cov kev taw qhia kev sib hloov thiab axial txav kev taw qhia ntawm cov yeeb nkab kom ua tiav rov qab ncaj ncaj. Tom qab ntawd xa cov raj mus rau lub raj ncaj nraim mus rau cov khoom khib nyiab los ntawm cov cuab yeej npaj txhij txog ntawm lwm qhov kawg. Rau cov kav dej nrog loj hauv zos khoov thiab deformed, koj tuaj yeem siv cov punch ntawm ob qho kawg los ua qhov ncaj nraim hauv zos, thiab tom qab ntawd tag nrho ncaj.
