1. Me yasa quenching da lankwasawa ke faruwa?
Lankwasawa mai kashewa yana faruwa a lokacin dumama kuma yana kashe sanyaya. Abin da ke faruwa a cikin dumama shine lanƙwasawa, kuma dalilin lanƙwasawa a cikin sanyaya shine rashin daidaituwa. mafi kusantar quenching da lankwasawa, biye da mai, wanka mai zafi, iska (tsarin sanyaya a hankali ya rage. Idan sanyaya ba daidai ba ne, gefen sanyi mai sauri yana farawa da farko, kuma lokacin da aka sanyaya duka, ya zama convex.
Hakanan, yin amfani da tallafin da bai dace ba a cikin dumama zai haifar da lanƙwasawa, kuma sarrafa damuwa zai kuma haifar da lanƙwasawa.
2. Yaya lankwasawa mai kashewa ke yin hali?
Saboda gefen sanyi na farko a cikin quenching shine gefen da ya taurare, wannan gefen ya zama convex.
3. Hanyar sanyaya da quenching da lankwasawa
Kamar yadda aka ambata a baya, sassan lanƙwasawa suna haifar da rashin daidaituwa. Wani bangare ya sanyaya gaba daya, shi kuma ya zama convex. Hoto na 3 da Hoto na 2 yana nuna wannan dangantakar. Wannan juyewar tana faruwa ne lokacin da aka sami bambancin zafin jiki tsakanin bangaren sanyi na farko da bangaren sanyaya jinkirin, da kuma sassan sirara-bangaran da ba sa samuwa. wannan bambancin yanayin zafi.Babu irin wannan juyawa, kuma gefen sanyi na farko yana kiyaye siffar concave ba tare da canzawa ba. Abinda ya faru dole ne ya kasance yana da wani nau'i na kauri na bango, kauri na bango na kimanin 15 ~ 20 mm sama da asali don bayyana wannan abin mamaki.
A takaice dai, sassan quenching na gaba ɗaya suna cikin wannan harka. Kuma me yasa gefen sanyi mai sauri ya zama convex? Wannan shi ne saboda gefen da ya sanyaya kwangilar farko, yana kiyaye gefen kwantar da hankali a hankali. tsayin da ya dace a wannan zafin jiki, kuma a cikin wannan yanayin, lokacin da aka sanyaya gabaɗayan ɓangaren, ɓangaren sanyaya ya tashi da farko, yayin da gefen sanyin jinkirin yana da faɗi.Lokacin da ba a yi zafi duka ba, amma gefe ɗaya kawai na dumama, idan kawai saman ya yi sauri ya yi sanyi, yanayin zafi zai zama mai zafi. fiye da marar zafi.Ƙungiyar da ba ta da zafi tana daidai da sanyaya a cikin sauri marar iyaka, don haka sanyaya yana da sauri, don haka gefen da ba shi da zafi yana da ma'ana.
Dumama da ke amfani da wannan ka'ida ana kiransa ɗumamar layi, wanda shine hanyar lanƙwasa faranti mai kauri. Wato, bututun harshen wuta na oxygen-acetylene kawai akan farantin mai kauri zuwa layin saurin dumama, dumama sannan tare da sanyaya ruwa. Juya farantin karfe. sama a kusurwar dama a madaidaiciya madaidaiciya. Wato, irin wannan hanyar dumama dole ne a lanƙwasa. A bayyane yake cewa wannan dumama dole ne ya kasance ƙasa da yanayin zafi mai mahimmanci.Ba zai yi kyau a kashe shi ba.Idan zafin zafin jiki ba a sarrafa shi sosai. da quenching, fadada martensite yana hana warping na farantin, sa'an nan kuma ba a samu sakamakon da ke sama ba. Wuka na Japan yana amfani da warping quenched.Ko da yake ana sanyaya bayan dumama, ruwan sanyi mai sauri yana fitowa saboda ruwan sirara ne kuma bayansa yana da kauri, kuma sanyaya ba daidai ba ne.Anan, bayan wuƙan yana jujjuyawa kuma ya zama warped. Plus da fadada martensite a quenching, warping.
Abubuwan da aka bayar na Shandong Jute Steel Pipe Co., Ltd.
Lambobin sadarwa: Mr. Ji
WhatsApp: +86 18865211873
WeChat: +86 18865211873
E-mail: jutesteelpipe@gmail.com
E-mail: juteguanye@aliyun.com
Lokacin aikawa: Maris 13-2022
