Material yeiyi forged part:
14CrNi3MoV (921D), yakakodzera forgings yesimbi ine ukobvu husingadariki 130mm inoshandiswa mungarava.
Manufacturing process:
Simbi yakaumbwa inofanira kunyungudutswa uchishandisa choto chemagetsi uye yemagetsi slag remelting nzira, kana dzimwe nzira dzakatenderwa nedivi rekuda. Simbi inofanira kupinda deoxidation yakakwana uye zviyo zvekugadzirisa zviyo. Paunenge uchigadzira ingot yakananga muchikamu chakaumbwa, chiyero chekugadzira chemuviri mukuru wechikamu hachifanirwe kunge chiri pasi pe3.0. The forging ratio of flat parts, flanges, and other extended parts of the forged part haifanire kunge iri pasi pe1.5. Paunenge uchigadzira billet muchikamu chakagadzirwa, chiyero chekugadzira chemuviri mukuru wechikamu hachifanirwe kunge chiri pasi pe 1.5, uye chiyero chekugadzira chezvikamu zvakabuda hazvifanirwe kunge zvisingasviki 1.3. Zvikamu zvakaumbwa zvakagadzirwa kubva kune ingots kana mabheti efogeti anofanirwa kuwana dehydrogenation yakakwana uye kurapwa kweanorenda. Welding yemabheti esimbi anoshandiswa kugadzira zvikamu zvefodya hazvibvumidzwe.
Delivery mamiriro:
Iyo yakaumbwa chikamu inofanira kuendeswa mune yakadzimwa uye yakatsamwa mamiriro mushure me normalizing pre-kurapwa. Iyo inokurudzirwa maitiro ndeye (890-910) °C normalizing + (860-880) °C quenching + (620-630) °C kupisa. Kana ukobvu hwechikamu chakaumbwa chichipfuura 130mm, chinofanira kupiswa mushure mekugadzirwa kwakashata. Zvikamu zvakashongedzwa hazvifanirwe kuita kuzorora kwekushushikana pasina mvumo yedivi rekuda.
Mechanical properties:
Mushure mekupisa kurapwa, iyo mechanical properties ye forged part inofanira kuenderana nezvinodiwa. Ingangoita bvunzo dzekukanganisa patembiricha ye -20°C, -40°C, -60°C, -80°C, uye -100°C inofanira kuitwa, uye kukwana kwakakwana kwesimba-tembiricha curves inofanira kurongwa.
Non-metallic inclusions uye saizi yezviyo:
Zvikamu zvakaumbwa zvakagadzirwa kubva kune ingots zvinofanirwa kunge zvine saizi yezviyo kwete yakakura kupfuura 5.0. Chiyero cheA type inclusions musimbi haifaniri kudarika 1.5, uye chiyero cheR type inclusions haifaniri kudarika 2.5, nehuwandu hwezvose zvisingapfuuri 3.5.
Surface quality:
Zvikamu zvakaumbwa hazvifanirwe kunge zvine hurema hunooneka senge makatsemuka, kupeta, shrinkage cavities, mavanga, kana kunze kwenyika isiri-metallic inclusions. Kuremara kwepamusoro kunogona kugadziriswa uchishandisa kukwesha, kukwenya, kukuya nevhiri rekugaya, kana nzira dzekugadzira, kuve nechokwadi chekubvumidza kwakakwana kwekupedzisa mushure mekugadzirisa.
Nguva yekutumira: Nov-24-2023
