Xuas nrig thiab flanging ntawmstamping khoomfeem ntau yog feem ntau rau cov kauj ruam tom ntej ntawm tapping lossis lwm yam txheej txheem. Cov teeb meem ntau yam xws li tawg, burrs, deformation, thiab lwm yam feem ntau tshwm sim hauv cov txheej txheem ntawm flanging dav thiab flanging. Qhov tseeb, xuas nrig thiab flanging yog qhov yooj yim heev. Ua tib zoo mloog cov ntsiab lus no kom tig tawm cov ntug zoo nkauj:

(1) Cov qib ntawm kev hloov pauv ntawm lub qhov taub flanging ntawm lubstamping ib feems yuav tsum tsis loj heev

Xuas nrig thiab flanging yog xuas nrig ntaus txoj hauv kev uas lub qhov yog xuas nrig ntaus ua ntej ntawm qhov khoob (qee zaum nws yuav tsis raug ntaus ua ntej), thiab lub flange ntsug tau tsim raws ntug ntawm lub qhov. Kev coj ua thiab yuav tsum tau deformation ntawm lub qhov flanging yog lub zog deformation ntawm cov khoom raws txoj kev tangential, thiab ze nws yog rau lub qhov ncauj, ntau dua qhov deformation thiab ntau dua thinning. Yog li ntawd, qhov tsis xws luag ntawm qhov ntug tawg yog nquag tshwm sim. Txhawm rau tiv thaiv ntug ntawm lub qhov los ntawm kev tawg, qib ntawm deformation ntawm lub puab qhov flanging ntawm lub thwj cim ib feem yuav tsum tsis loj heev. Yog tias qhov siab flanging loj, nws tuaj yeem faib ua ob peb flangings.

(2) Lub flanging coefficient ntawm xuas nrig thiab flanging yuav tsum tsis txhob me me

Hauv kev xuas nrig thiab flanging, qib ntawm kev hloov pauv tau qhia los ntawm qhov sib piv ntawm lub qhov muag ua ntej flanging mus rau lub qhov muag tom qab flanging, uas yog, flanging coefficient K. Pom tseeb, qhov loj dua K tus nqi, qhov me me ntawm kev hloov pauv, me dua tus nqi K, qhov ntau dua ntawm kev deformation, thiab feem ntau yuav ua rau ntug ntawm qhov burr qhov yog tawg. Tus nqi tag nrho ntawm qhov siab tshaj plaws ntawm kev hloov pauv uas tuaj yeem ua tiav yam tsis tau tawg ntawm ntug ntawm lub qhov thaum lub flanging hu ua qhov tso cai txwv flanging coefficient.

Txhawm rau tiv thaiv ntug kev tawg, qhov flanging coefficient ntawm qhov flanging yuav tsum tsis txhob me me, thiab yuav tsum ntau dua li qhov txwv qhov flanging coefficient. Kev xyaum ua khoom lag luam qhia tau tias qhov txwv qhov flanging coefficient tsis yog tsuas yog cuam tshuam nrog hom thiab kev ua tau zoo ntawm cov khoom, tab sis kuj tseem ua rau cov khoom ua haujlwm thiab lub xeev ntawm lub qhov prefabricated qhov (drilled lossis xuas nrig ntaused, nrog lossis tsis muaj burrs), txheeb ze tuab ntawm qhov khoob , thiab cov duab ntawm flanging xuas nrig ntaus, thiab lwm yam.

Qhov siab tshaj plaws deformation degree (tseem hu ua lub qhov drilling coefficient K) cuam tshuam nrog ntau yam, tab sis hauv kev suav ntau lawm, qhov siab tshaj plaws elongation δ tuaj yeem siv los kwv yees qhov txwv txwv qhov drilling coefficient, thiab qib ntawm deformation ntawm prefabricated qhov tuaj yeem raug siv ua ntej txiav txim siab seb puas yuav tawg qhov tsis xws luag. Cov mis yog raws li hauv qab no:

Thaum lub sijhawm txheej txheem tho txawv (saib daim duab 2), thaj chaw cov khoom deformation feem ntau yog siv cov kev hloov pauv thiab ua kom nyias nyob rau hauv cov lus qhia tangential, thaum lub radial deformation tsis loj, yog li txoj kev khoov yooj yim tuaj yeem siv kom ntev ntawm txheej nruab nrab tsis hloov Lub hauv paus yog los txiav txim siab txoj kab uas hla ntawm lub qhov prefabricated qhov kwv yees, thiab cov mis yog raws li hauv qab no:

Hauv cov qauv, d yog txoj kab uas hla ntawm lub qhov prefabricated qhov, D yog txoj kab nruab nrab ntawm txheej nruab nrab ntawm txoj kab ntsug tom qab kev khawb, H yog qhov siab tom qab drilling, r yog lub vojvoog ntawm cov nqaij, thiab t yog cov khoom tuab hauv hli

(3) Qhov siab flanging ntawm xuas nrig thiab flanging yuav tsum tsis txhob loj heev

Qhov siab ntawm xuas nrig thiab flanging yuav tsum feem ntau tsis ntau dua li tus nqi txwv, txwv tsis pub, ntug ntawm flanging yuav yooj yim tawg. Yog tias qhov siab ntawm qhov thwj cim yuav tsum ua kom ntau dua li tus nqi txwv, nws tsis tuaj yeem ncaj ncaj ntawm ib zaug. Lub sijhawm no, yog tias nws yog lub qhov me me flanging ntawm ib qho uas tsis muaj dab tsi, yuav tsum tau siv lub flanging nrog phab ntsa nyias, xws li tus kheej tapping ntsia hlau rau flanging. Yog tias nws yog qhov loj flanging, siv txoj hauv kev nqus nqus, xuas nrig hauv qab thiab tom qab ntawd flanging.

Lub qhov siab qhov siab yog qhov ntsuas qhov ua tau zoo ntawm ib feem, thiab cov mis ntawm qhov txwv qhov tig qhov siab tuaj yeem muab los ntawm cov mis (1) thiab mis (2):

(4) Lub qhov ua ntej qhov xuas nrig ntaus thiab flanging yuav tsum tsis muaj burrs loj

Covuaqhov zoo ntawm qhov xuas nrig ntaus thiab flanging pre-hole muaj qhov cuam tshuam loj dua ntawm qhov txwv qhov flanging coefficient. Cov qhov ua ntej uas tau deburred tom qab drilling muaj qhov txwv me me flanging coefficient, uas muaj txiaj ntsig zoo rau flanging. Rau qhov ua ntej qhov xuas nrig nrog xuas nrig tuag, yog tias muaj burrs, qhov txwv qhov flanging coefficient loj, uas tsis zoo rau flanging. Lub sijhawm no, yog tias qhov xav tau flanging coefficient me me, nws yooj yim heev ua rau flanging tawg. Siv sab nrog cov burrs nce, thiab tom qab ntawd ua cov flanging txhawm rau txo qhov tshwm sim ntawm flanging tawg.

(5) Lub vojvoog ntawm cov xuas nrig ntaus thiab flanging xuas nrig ntaus yuav tsum tsis txhob me me

Rau flanging nrog cov qhov prefabricated qhov, lub kaum sab xis kaum ntawm lub flanging xuas nrig ntaus yuav tsum loj li sai tau, nyiam dua kheej kheej lossis parabolic. Ua li no, lub qhov tig qhov quab yuam me me, thiab lub qhov tig qhov zoo kuj yog qhov zoo.

(6) Qhov sib txawv ntawmxuas nrig ntaus thiab qhov tuag ntawm lub qhov flanging yuav tsum tsis txhob loj heev

Txhawm rau zam lossis txo qis, qhov sib txawv ntawm qhov flanging convex thiab concave tuag yuav tsum tsis txhob loj heev. Yog tias cov pwm sib txawv loj heev, cov khoom tsis txav mus ze rau qhov tuag thaum lub flanging, ua rau muaj kev sib zog ntau dua, thiab qhov seem dabtsi yog khoov deformation yuav tshwm sim, uas yuav cuam tshuam rau flanging zoo ntawm ib feem.

(7) Thaum tig lub qhov, tuab ntawm lub qhov ncauj sab ntsug tuaj yeem tsis quav ntsej

Thaum tig lub qhov, thaj chaw deformation feem ntau txwv tsis pub dhau lub vojvoog ntawm tus tuag. Nyob rau hauv qhov kev txiav txim siab ntawm ib puag ncig lossis ob txoj kev sib zog ua kom muaj zog, lub zog tangential elongation deformation ntawm cov khoom hauv cheeb tsam deformation yog ntau dua li qhov radial compression deformation, ua rau cov khoom siv nyias. Qhov ua kom nyias nyias ntawm ntug ntug ntawm lub qhov yog qhov loj tshaj plaws. Thaum cov tuab tuab dhau thiab cov ntaub ntawv elongation ntau tshaj qhov kawg elongation ntawm cov khoom, qhov thiaj li hu ua p-cracking (tawg vim los ntawm elongation ntau dhau thiab cov yas tsis txaus ntawm cov khoom siv hu ua Force anus rupture; tawg los ntawm kev tsim ntau dhau quab yuam thiab cov khoom siv tsis txaus hu ua rupture). Thaum xuas nrig thiab flanging, qhov me me flanging coefficient K tus nqi, qhov ntau dua ntawm kev hloov pauv, thiab ntau dua qhov tuab ntawm qhov ntsug ntug qhov ncauj raug txo, thiab yooj yim dua nws yog tawg. Yog li ntawd, qhov thinning ntawm txoj kab ntug qhov ncauj tuab tuaj yeem tsis quav ntsej thaum lub qhov drilling.