momwe mungasankhire nkhungu yoyenera ndi vuto la kufa

Kusankha nkhungu
Die Material Selection ndi ulalo wofunikira kwambiri pantchito yonse yopanga kufa. Die Material Selection iyenera kukwaniritsa mfundo zitatu, kufa kukumana ndi kukana kuvala, mphamvu ndi kulimba ndi zofunika zina ntchito, kufa kukwaniritsa zofunika ndondomeko, ndi kufa ayenera kukwaniritsa zachuma applicability. Mkhalidwe wopinda umafunika
1. Valani kukana. Pamene akusowekapo ndi plastically denatured mu kufa patsekeke, imayenderera ndi kutsetsereka pamwamba pa mafelemu, kuchititsa kukangana kwakukulu pakati pa nthiti zakufa ndi zopanda kanthu, zomwe zimabweretsa kulephera kwa kufa chifukwa cha kuvala. Chifukwa chake, kukana kuvala kwa zinthuzo ndi chimodzi mwazinthu zofunika kwambiri komanso zofunika kwambiri pakufa. Kuuma ndiye chinthu chachikulu chomwe chimakhudza kukana kuvala. Mwambiri, ndipamwamba kuuma kwa ziwalo zakufa, zocheperako kuchuluka kwa mavalidwe, bwino kukana kuvala. Kuphatikiza apo, kuvala kukana kumagwirizananso ndi mtunduwo, kuchuluka, mawonekedwe, kukula ndi kugawa kwa carbides muzinthu.
2. Kulimba mtima, kufa kwa ntchito nthawi zambiri kumakhala koyipa kwambiri, ena nthawi zambiri amanyamula katundu wokulirapo, kuchititsa brittle fracture. Pofuna kupewa kufa ziwalo ntchito mwadzidzidzi Chimaona fracture, ufa uyenera kukhala wamphamvu komanso wolimba. Kulimba kwa kufa kumadalira makamaka zomwe zili mu kaboni, kukula kwambewu ndi microstructure ya zinthu.
3. Kutopa fracture ntchito, kufa ntchito mu zotsatira za nthawi yayitali za kupsinjika kwa cyclic, nthawi zambiri kumabweretsa kutopa fracture. Mawonekedwe ake akuphatikizapo kutsika kwamphamvu kwamphamvu kobwerezabwereza kutopa kusweka, kutopa kwamphamvu fracture, kukhudzana kutopa fracture ndi kupinda kutopa fracture. Kutopa ndi kusweka kwa kufa kumadalira mphamvu zake, kulimba, kuuma, ndi zomwe zili muzinthuzo.
4. Kuchita kwa kutentha kwakukulu, pamene ntchito kutentha kwa nkhungu ndi apamwamba, adzachepetsa kuuma ndi mphamvu, kutsogolera nkhungu kuvala koyambirira kapena kupunduka kwa pulasitiki ndi kulephera. Chifukwa chake, nkhungu ziyenera kukhala ndi kukhazikika kwapamwamba kwa anti-tempering, kuonetsetsa kuti nkhungu mu ntchito kutentha, ndi kuuma kwakukulu ndi mphamvu.
5. Kukana kuzizira ndi kutentha kutopa. Zina zimafa zimatenthedwa ndikuzizidwa mobwerezabwereza pogwira ntchito, chomwe chimapanga pamwamba pa

Mphepete mwa difa imakhudzidwa ndi kupsinjika komanso kupsinjika kwamphamvu, zimayambitsa kusweka kwa pamwamba ndi kuphulika, kumawonjezera kukangana, ndipo imalepheretsa kusintha kwa pulasitiki, kuchepetsedwa Dimensional kulondola, kulephera kwa nkhungu. Kutopa kozizira komanso kotentha ndi chimodzi mwazinthu zazikulu zolephera kugwira ntchito yotentha, ndipo mtundu uwu wa kufa uyenera kukhala ndi kuzizira kwambiri komanso kutentha kutentha. 6. Kukana dzimbiri, zisankho zina monga nkhungu pulasitiki mu ntchito, chifukwa cha kukhalapo kwa chlorine, fluorine ndi zinthu zina mu pulasitiki, kutentha pambuyo pakuwonongeka kwa HCI, HF ndi gasi wina wamphamvu wakuwononga, kukokoloka nkhungu patsekeke pamwamba, onjezerani roughness yake ya Surface, onjezerani kuwonongeka kwa thupi.
1) Zida za zigawo zazikulu zogwirira ntchito za nkhungu zimasankhidwa molakwika. Zakuthupi sizigwira ntchito bwino ndipo sizitha kuvala; chitsulo chakufa sichinayeretsedwe ndipo chimakhala ndi zolakwika zambiri zosungunula; mawonekedwe a convex ndi concave, kupeka zomwe akusowekapo ndipo njira yopangira si yangwiro, ndipo pali zoopsa zobisika za chithandizo cha kutentha.

2) Vuto la kapangidwe ka kufa, kapangidwe ka kufa ndi kopanda nzeru. nkhonya yowondayo sinapangidwe ndi chipangizo chothandizira, doko lotayira silili losalala ndipo limawunjikana, ndipo mphamvu yotulutsa ndi yayikulu kwambiri, ndipo nkhonya imayikidwa pakuchulukira kosinthika.

3) The nkhungu kupanga ndondomeko si ungwiro, amene makamaka akuwonetseredwa osauka mkati khalidwe la otukukira m'mimba ndi concave kufa forging akusowekapo, ndi teknoloji yochizira kutentha ndi ndondomeko zimakhala ndi mavuto, zomwe zimapangitsa kuti zisankho za convex ndi concave sizizimitsidwe, mawanga ofewa ndi kuuma kosagwirizana. Nthawi zina ma microcracks kapena ming'alu imachitika, kugaya ndi kupukuta palibe, ndipo mtengo wa roughness wa pamwamba ndi waukulu kwambiri.

4) Palibe mafuta kapena mafuta koma zotsatira zoyipa