Cold drawing tube yog ib hom yeeb nkab yeeb nkab, uas yog txawv ntawm cov hlua daus (expansion) raj raws li kev sib txawv ntawm kev sib faib khoom. Nyob hauv tus txheej txheem ntawm kev nthuav dav ntawm kab los yog cov khoom siv raw, cov txheej txheem txias-kev kos yog feem ntau ua nyob rau hauv ib qho saw lossis ob chav saw khaub-siv tshuab nrog 0.5-100t. Cov raj xa xov hluav taws xob, kev sib tsoo, kev sib tsoo, kev sib tsoo, kev sib tsoo, kev sib tsoo, thiab cov yeeb nkab , cov yeeb nkab uas yog xim txias muaj xws li cov pa roj carbon fiber hauv cov hlau, cov hlau thawv txaij phom, cov hlua khi hlua hluav taws xob, yeeb nkab yeeb nkab. Cold drawn steel tube rau nws txoj kab taub 6 hli, phab ntsa thickness mus rau 0.25 hli, mus rau 5 hli phab ntsa thickness nyias phab ntsa yeeb zog tsawg dua 0.25 hli me me, qhov tseeb thiab qhov zoo tshaj plaws tau zoo dua li ntawm qhov kub dov (expanding) muaj feem ntawm qhov kev txwv ntawm txoj kev, lub taub thiab ntev yog qee yam rau qee yam.
Kub raj yog ib hom yeeb nkab haum tsim los ntawm kub txheej txheem, uas yog ib qho kev ua haujlwm ntawm txhua yam.
Kub dov yog ib txoj hlua uas tau ua saum toj no kom sov dua. Kub txheej txheem kub tau txo qhov kev siv zog thiab txo nqi. Kub duav hlau yas yog siab, thaum deformation deev tsis zoo, txo cov zog noj cov hlau deformation, thiab yuav txhim kho kev ua haujlwm ntawm hlau thiab hlau, lub casting ntawm lub xeev ntawm lub grain crushing, tseem ceeb cracking, txo cov los yog tshem tawm cov teeb meem nrum, uas yog-cam khwb cia rau hauv kev hloov ua ke, txhim kho kev ua tiav ntawm kev ua txhua yam.
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