nkhani

M'zaka za m'ma 1960 chifukwa chopanga mphero yatsopano yodziwika bwino (yotchedwa Transval mill), njirazi zayambika mwachangu. Mphero yatsopanoyi imadziwika ndikutembenuka mwachangu kwa polowera kumbuyo poyimitsako ikubwera kudzasintha Kutsegula ngodya, potero kumalepheretsa mchira kupanga zing'onozing'ono zomwe zimapangitsa mtundu wa kupanga kuchuluka kwa m'mimba mwake mpaka makulidwe amakoma kumakulitsidwa kuchokera ku 12 mpaka 35, komwe sikungangopanga machubu okhala ndi mipanda yopyapyala, komanso kumawonjezera mphamvu yopanga.

Njira yachikhalidwe yolowera chitoliro ndikuti billet imadzazidwa ndimadzi ndikumawonjezera mu ubweya wa chikho ndi chubu chopingasa chomwe mandrel yayitali imalowetsedwa pansi pa kapu ya capillary ndi ndodo yosunthira ndikucheperachepera pang'onopang'ono Mtundu wa die die chimango, pamwamba wokutidwa m'machubu.Mtundu wa njira zopangira uli ndi ndalama zochepa pazida ndipo zitha kugwiritsidwa ntchito poponyera billet mosalekeza, zimatha kupanga m'mimba mpaka 1070mm, makulidwe khoma mpaka 200mm wa chitoliro chowonjezera, koma kupanga kocheperako, khoma lokulirapo, kutalika kwa chitoliro chofupikirako bwino. Pambuyo poti njira yatsopano ya CPE itulukire, machubu opanda kanthu amapangika ndikulumikiza mtanda ndikuwonjezeredwa m'machubu ndikutambasula pamwamba mutatseka, komwe kumagonjetsa njira yachikhalidwe.

Zofooka zina zopanda kupanga mapaipi yakhala njira yabwinoko yopindulira pachuma.
Popanga mapaipi a extrusion, peeled billet yoyamba imapangidwanso kapena kusinthidwa ndikusungunuka kenako ndikutenthedwa ndikulowetsa kusamba kwamchere kumatenthedwa, ndipo mkati mwake mumadzazidwa ndi mafuta ndikudyetsa mu extruder, kudzera mu dzenje lofa komanso kudzera pachitsulo chosasunthika pakati pa mandrel amafinyidwa m'machubu zachitsulo.

Amagwiritsidwa ntchito popanga mapaipi otsika a pulasitiki, mapaipi apadera, mapaipi ophatikizika ndi machubu amtundu wachitsulo, etc. Njira iyi ili ndi mitundu yambiri yopanga, koma yocheperako.M'zaka zaposachedwa, chifukwa cha zida za nkhungu, zokutira mafuta, liwiro la extrusion ndi zina zotero zasinthidwa, kupanga chitoliro cha extrusion kwatulukanso.

Makina oyendetsera makina otchedwa Coil rolling chubu amatchedwanso Diessel perforated capillary chubu wokhala ndi mandrel yayitali yaying'ono yamachubu yazitsulo yolumikizidwa pa mphero ya mbale. Mphero ndi wofanana ndi nkhonya ziwiri - zopingasa pamtanda kupatula mbale yolumikizidwa yosinthidwa idasinthidwa kukhala mbale yowongolera .Pa nthawi yayitali kupanga mandrel, chitsulo chubu mkati khoma yosalala, ndipo palibe kukanda; Koma chida chazida ndichachikulu, sinthani zovuta.Chimagwiritsidwa ntchito kutulutsa machubu a 150mm akunja a kaboni pazitsulo zotsatirazi zomwe zimagwiritsidwa ntchito masiku ano. ndipo alibe chiyembekezo chachikulu chachitukuko.

Kupanga kwa chubu kumakhala kosalala kapena kopanda kanthu m'makina opota kudzera m'modzi kapena zingapo zopota zazitsulo zazitsulo zopyapyala.kulondola kwambiri, mawonekedwe abwino, osiyanasiyana, koma magwiridwe antchito ake ndi otsika. -mipope yazitsulo zazitsulo, komanso zomwe zimagwiritsidwa ntchito popanga.

Kupatula zida zapakhomo, zotengera zamagulu ndi zida zamakina, zomwe zimagwiritsidwa ntchito kwambiri pamagulu ankhondo.
M'zaka za m'ma 1970, pogwiritsa ntchito njira yolimba yopota yatha kutulutsa chitoliro mpaka 6000mm, m'mimba mwake ndi makulidwe anyumba chiŵerengero chopitilira 10000 lalikulu m'mimba mwake chitoliro chowonda kwambiri komanso zovekera zooneka bwino.
Kuzizira kozizira, kujambula kojambula kozizira kogwiritsira ntchito khoma laling'ono laling'ono, kulinganiza molondola komanso kapangidwe kazitsulo kapangidwe kazitsulo.zinthu zambiri - ndondomeko yoyendera.

M'zaka za m'ma 1960, idayamba kukula mothamanga kwambiri, mizere yambiri, sitiroko yayitali komanso chubu lalitali lopanda kanthu.Kuwonjezera apo, mphero yaying'ono yozungulira yozungulira idapangidwanso, yomwe imagwiritsidwa ntchito popanga chitoliro cholondola kwambiri chachitsulo chokhala ndi makulidwe ochepera 1mm. Zida zozizira zozizira ndizovuta, kukonza zida kumakhala kovuta, ndipo kutembenuka kosiyanasiyana ndikusintha sikungasinthe. Njira zophatikizira kuzizira kozizira ndikujambula kozizira nthawi zambiri zimakhazikitsidwa, ndiye kuti, khoma limayamba kuchepetsedwa ndikutambasula kozizira kuti likhale ndi mapindikidwe akulu, kenako mitundu ingapo yama gauji imapezeka ndi latisi yozizira yojambula.


Post nthawi: Nov-23-2020