Tempering wani tsari ne na maganin zafi wanda aka kashe kayan aikin kuma yana mai zafi zuwa zafin jiki a ƙasa da Ac1 (zazzabi na farawa don pearlite don canza canjin lokacin dumama), ana gudanar da shi na ɗan lokaci, sa'an nan kuma sanyaya zuwa zafin jiki.
Yawan zafin jiki yana biye da shi ta hanyar kashewa, tare da manufar:
(a) Kawar da saura danniya da aka haifar a lokacin workpiece quenching don hana nakasawa da fatattaka;
(b) Daidaita taurin, ƙarfi, filastik, da taurin kayan aikin don biyan buƙatun aiki don amfani;
(c) Tsayayyen tsari da girman, tabbatar da daidaito;
(d) Ingantawa da haɓaka aikin sarrafawa. Sabili da haka, tempering shine tsari mai mahimmanci na ƙarshe don samun aikin da ake buƙata na workpiece. Ta hanyar haɗa quenching da tempering, ana iya samun kayan aikin injiniya da ake buƙata. [2]
Dangane da kewayon zafin jiki, za a iya raba zafin jiki zuwa ƙananan zafin jiki, matsananciyar zafin jiki, da matsanancin zafin jiki.
Rarraba zafin jiki
Ƙananan zafin jiki
Tempering na workpiece a 150-250 °
Manufar ita ce don kula da tsayin daka da kuma sa juriya na kayan aikin da aka kashe, rage damuwa da raguwa a lokacin quenching.
Tempered martensite samu bayan tempering yana nufin microstructure samu a lokacin low-zazzabi tempering na quenched martensite. Mechanical Properties: 58-64HRC, high taurin da sa juriya.
Aikace-aikacen ikon yinsa: Yafi amfani da daban-daban iri high carbon karfe kayan aikin, yankan kayan aikin, aunawa kayan aikin, kyawon tsayuwa, mirgina bearings, carburized da surface quenched sassa, da dai sauransu [1]
Matsakaicin zafin jiki
Tempering na workpiece tsakanin 350 da 500 ℃.
Manufar ita ce a cimma babban elasticity da ma'anar yawan amfanin ƙasa, tare da taurin da ya dace. Bayan tempering, tempered troostite aka samu, wanda ke nufin duplex tsarin ferrite matrix kafa a lokacin martensite tempering, inda musamman kananan spherical carbides (ko cementite ta) aka rarraba a cikin matrix.
Kaddarorin injina: 35-50HRC, ƙayyadaddun iyaka mai ƙarfi, maƙasudin samarwa, da takamaiman tauri.
Ƙimar aikace-aikacen: galibi ana amfani da su don maɓuɓɓugan ruwa, maɓuɓɓugan ruwa, ƙirƙira ya mutu, kayan aikin tasiri, da sauransu [1]
Babban zafin jiki
Tempering na workpieces sama da 500 ~ 650 ℃.
Manufar ita ce samun cikakkun kayan aikin injiniya tare da kyakkyawan ƙarfi, filastik, da tauri.
Bayan zafin jiki, ana samun sorbite mai zafi, wanda ke nufin tsarin duplex na ferrite matrix da aka kafa a lokacin yanayin zafi na martensite, inda aka rarraba ƙananan carbides (ciki har da cementite) a cikin matrix.
Mechanical Properties: 25-35HRC, tare da mai kyau m inji Properties.
Ƙimar aikace-aikacen: Ana amfani da shi sosai don sassa daban-daban masu ɗaukar kaya masu mahimmanci, irin su sandunan haɗin gwiwa, kusoshi, gears, da sassan shaft.
A hada zafi magani tsari na workpiece quenching da high-zazzabi tempering ake kira quenching da tempering. Quenching da tempering ba za a iya amfani da su ba kawai don maganin zafi na ƙarshe ba, har ma don maganin zafin zafin jiki na wasu madaidaicin sassa ko sassan da aka kashe.
Imel:oiltools14@welongpost.com
Grace Ma
Lokacin aikawa: Nuwamba-03-2023
