Nws nchuav tawm hla lub ntiaj teb saum npoo ntawm lub roob hluav taws tawg. Cov txheej txheem no hu ua extrusion. Cov pob zeb uas tsim los ntawm extruded magma yog hu ua extrusive igneous pob zeb. Bas alt thiab pumice yog extrusive igneous pob zeb.
Thaum extrudes rau lub ntiaj teb crust yog?
Cov pob zeb no hu ua pob zeb uas tsis muaj zogYog tias magma nce mus rau lub ntiaj teb saum npoo nws yuav extrude (thawb tawm), ntws los yog tawg tawm ntawm qhov chaw li lava, tsim. extrusive igneous pob zeb (tseem hu ua pob zeb volcanic). Magma thiab pob zeb uas nws tsim muaj cov tshuaj zoo sib xws.
extrusion tshwm sim li cas?
txheej txheem pib los ntawm cua sov cov khoom lag luam (rau kub lossis sov extrusion). Nws yog ces loaded rau hauv lub thawv nyob rau hauv xovxwm. Lub dummy thaiv yog muab tso rau hauv qab nws qhov twg tus ram ces nias rau ntawm cov khoom kom thawb nws tawm ntawm qhov tuag. Tom qab ntawd lub extrusion yog stretched nyob rau hauv thiaj li yuav ncaj nws.
Hlau extrusion yog dab tsi?
Hlau extrusion yog txheej txheem siv los tsim cov khoom ntev dua nrog cov profile ruaj khov los ntawm kev thawb lub cylindrical billet hauv qhov kaw kaw. Cov khoom kawg yog hu ua extrudate thiab tuaj yeem muaj ntau yam kev xav tau thiab cov khoom zoo.
Puas yog extrusion hauv lub tsheb ua los ntawm steel?
Aluminium extrusion yog siv rau hauv ntau daim ntawv thov. Nyob rau xyoo 1990, lawv tau siv feem ntau rau cov kab hluav taws xob thiab lub qhov rooj. Tab sis lawv lub luag haujlwm tau loj hlob nrog lub sijhawm. Cov hlau thiab txhuas yog tam sim no siv ib sab ntawmhauv lub tsheb lub cev ntawm cov tsheb thiab cov tsheb thauj khoom.
