Kupitilira kuguwa kwa chubu (posiya kutanthauza kuti MPM) ndi mandrel akunena kuti azivala mfundo yayitali yotsatizana, ndikugudubuza njira yogwiritsira ntchito chitoliro cha amayi. Chosiyanitsa chake ndi gawo lalikulu, kugwira ntchito kwambiri, kutalika kwa chipongwe chopanda kanthu komanso mtundu wazogulitsa, kukula kwakukulu; Koma ndalama zake zazikulu ndi zamitundu yofananira ndi kuwongolera kwambiri.
Kuthamanga kwa MPM kwa mtundu womwewo, kapangidwe kofanana kwambiri ndi mphero yodutsa kawiri. Kutengera ndi kusuntha kwa mandrel MPM itha kugawidwa ndikuyandama malo oyimilira minda ya Mandrel Mill.
1970s pamaso pa MPM isanagwiritsidwe ntchito mandrel. Kuchokera ku nkhonya kuti muziwoloka capillary pambuyo pa chimbudzi chitumbuwa chikugubuduza, ndikudulira gawo lotsatira kuti libwerere ku Mandrel Mandler Pambuyo pozizira ntchito.
1970s France ndi Italy awonekera mu MandLel Extper ndi kuyimitsa MPM. Mwakutero, njira ziwiri izi zogwirira ntchito pa chubu cha MandLel Guolts, zimabwerekedwa kuchokera ku Mandrel Njira yogwiritsira ntchito makina atatu oyendetsa ndege.
Hafu yosungika kwa Mandrel Kusungidwa kwa Mandrel
M'zaka zaposachedwa, y-yokulungira y mpm yodziwika bwino pa PQF mi lonse, kutsatira matekinoloji yopumira kwa odzigudubuza, motero makina amagetsi osokoneza bongo ndi zotupa za khoma komanso zabwino zomwe zili ndi vuto lalikulu. Njira yake yopukutira imatha kukhala yokhazikika kukula kwa gawo limodzi, malo otsika kapena crack in wen phenomenon m'munda wam'mamba wowonda komanso wokutira kwambiri.
Post Nthawi: Aug-07-2023