ʻO kakaʻina ʻōʻō keaʻO ia ka mea i hoʻohana nui ʻia i ka hana ʻana i nā paipu kila maʻemaʻe, a ua hana ʻia e nā kaikunāne German Mannesmann i ka makahiki 1883. ʻO ka mīkini kuʻi keʻa e loaʻa ana i ka mīkini ʻoki ʻelua ʻōwili keʻa a me ka mīkini ʻoki ʻekolu.ʻO nā hemahema maikaʻi o ka capillary i hana ʻia e ka ʻōwili keʻa a me ka hou ʻana o ka paipu blank ka mea nui e pili ana i ka pelu i loko, i waho, ka mānoanoa pā like ʻole a me nā ʻōpala ʻili o ka capillary.

ʻO ka Capillary infolding: ʻO ka Capillary ka hemahema i hiki ke loaʻa i ka piercing cross-rolling, a pili loa ia i ka hana hou ʻana o ka paipu blank, ka hoʻoponopono ʻana i nā ʻāpana kaʻina hana o ka piercing pass machine, a me ka maikaʻi o ka piercing. hoʻopili.ʻO nā mea e pili ana i ka ʻike ʻana o ka capillary: ʻo ka hoʻemi ʻana (ka helu) a me nā manawa hoʻopiʻi ma mua o ke plug;ʻo kekahi ʻo ke ʻano puka;ʻo ke kolu ka maikaʻi o ka ʻili o ka plug.
ʻO ka piko i waho o ka paipu capillary: ʻO ka hapa nui o ka piko o waho o ka paipu capillary ma muli o ka hemahema o ka ʻili o ka paipu blank, ʻo ia kekahi hemahema maikaʻi o ka ʻili i hiki ke hana maʻalahi i ka wā e ʻōwili keʻa a hou ʻia ka pahu pahu.Nā mea e pili ana i ka piʻo ʻana o ka puʻupuʻu i waho: A. ka ʻili o ka paipu a me ka deformation perforation;B. paipu blank ili hemahema;C. perforation mea paahana maikaʻi a me ka hele kino.

ʻAʻohe mānoanoa o ka paia capillary: Aia ka mānoanoa o ka paia transverse a me ka mānoanoa o ka paia longitudinal.I ka wā e kaʻa ai a hou aku, ʻike ʻole ʻia ka mānoanoa o ka paia transverse.ʻO nā kumu nui e pili ana i ka mānoanoa o ka paia transverse ʻole o ka pahu capillary: ʻo ka wela wela o ka pahu blank, ke kikowaena o ka hopena o ka paipu, ka hoʻoponopono ʻana i ke kumu puka o ka mīkini piercing a me ke ʻano o ka mea hana, etc.

ʻAʻole koʻikoʻi nā koi no ka maikaʻi o ka ʻili o nā paipu capillary perforated e like me nā wili paipu ʻōwili a me nā wili nui no ka maikaʻi o ka ʻili o ka paipu kila, e hoʻopilikia pū ʻia ka maikaʻi o ka ʻili o nā paipu capillary.ʻO nā mea e pili ana i ka ʻili ʻana o ka ʻili o ka paipu capillary: no ka mea, ʻo ka ʻili o ka mea hana perforating a i ʻole ka papa ʻaina puka o ka mīkini paʻi ʻana, ʻaʻole i ʻōwili ʻia ka papa ʻaina.I mea e pale aku ai i ka ʻili o ka capillary mai ka ʻoki ʻia ʻana e nā hemahema o ka ʻili o ka mea hana perforating, pono e hoʻoikaika ʻia ka nānā ʻana a me ka wili ʻana o ka mea hana perforating (ke alakaʻi cylinder a me ka pahu).