(1) Babban bambanci tsakanin kayan ƙarfe da ake amfani da su don sassan sarkar a gida da waje shine a cikin faranti na ciki da na waje.Yin aikin farantin sarkar yana buƙatar ƙarfin ƙarfi mai ƙarfi da wasu tauri.A kasar Sin, ana amfani da miliyan 40 da miliyan 45 don masana'antu, kuma ba kasafai ake amfani da karfe 35 ba.A sinadaran abun da ke ciki na 40Mn da 45Mn karfe faranti ne fadi fiye da na kasashen waje S35C da SAEl035 karfe, kuma akwai 1.5% zuwa 2.5% kauri decarburization a saman.Saboda haka, sarkar farantin sau da yawa fama da gaggautsa karaya bayan quenching da isasshen zafin jiki.
A lokacin gwajin taurin, taurin saman sarkar farantin bayan quenching yayi ƙasa (kasa da 40HRC).Idan wani kauri na saman saman ya ƙare, taurin zai iya kaiwa fiye da 50HRC, wanda zai yi tasiri sosai ga ƙananan nauyin sarkar.
(2) Masana'antun ƙasashen waje gabaɗaya suna amfani da S35C da SAEl035, kuma suna amfani da ƙarin ci gaba mai ci gaba da bel carburizing tanderu.A lokacin jiyya na zafi, ana amfani da yanayi mai karewa don maganin recarburization.Bugu da ƙari, ana aiwatar da tsauraran matakan sarrafawa a kan wurin, don haka faranti na sarkar da wuya ya faru.Bayan quenching da zafin jiki, karaya mai rauni ko ƙananan taurin yana faruwa.
Binciken Metallographic ya nuna cewa akwai adadi mai yawa na tsari mai kyau na allura-kamar martensite (kimanin 15-30um) akan saman farantin sarkar bayan quenching, yayin da ainihin shine tsarin tsiri-kamar martensite.Ƙarƙashin yanayin kauri na farantin sarkar guda ɗaya, ƙarancin ƙarancin ƙarfi bayan zafin jiki ya fi na samfuran gida girma.A cikin ƙasashen waje, ana amfani da faranti mai kauri na 1.5mm gabaɗaya kuma ƙarfin da ake buƙata shine> 18 kN, yayin da sarƙoƙin cikin gida gabaɗaya suna amfani da faranti mai kauri 1.6-1.7mm kuma ƙarfin da ake buƙata shine> 17.8 kN.
(3) Saboda ci gaba da inganta abubuwan da ake buƙata don sassan sassan babur, masana'antun gida da na waje suna ci gaba da inganta karfe da aka yi amfani da su don fil, hannayen riga da rollers.Matsakaicin ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan juriya na lalacewa na sarkar yana da alaƙa da ƙarfe.Bayan masana'antun cikin gida da na waje kwanan nan sun zaɓi karfe 20CrMnTiH a matsayin kayan fil maimakon 20CrMnMo, nauyin sarkar sarkar ya karu da 13% zuwa 18%, kuma masana'antun kasashen waje sun yi amfani da karfe SAE8620 azaman fil da kayan hannu.Wannan kuma yana da alaƙa da wannan.Aiki ya nuna cewa kawai ta hanyar inganta rata tsakanin fil da hannun riga, inganta tsarin kula da zafi da lubrication, za a iya inganta juriya da juriya na sarkar.
(4) A cikin sassan sarkar babur, farantin haɗin gwiwa da hannun riga, farantin waje da fil duk an gyara su tare da tsangwama, yayin da fil da hannun riga sun dace da sharewa.Daidaitawa tsakanin sassan sarkar yana da tasiri mai girma akan juriya na lalacewa da ƙananan nauyin sarkar.Dangane da lokuta daban-daban na amfani da lalacewa na sarkar, an raba shi zuwa matakai uku: A, B da C. Ana amfani da Class A don aiki mai nauyi, mai sauri da mahimmanci;Ana amfani da Class B don watsawa gabaɗaya;Ana amfani da Class C don canja wurin kayan aiki na yau da kullun.Don haka, buƙatun daidaitawa tsakanin sassan sarkar Aji sun fi tsanani.
Lokacin aikawa: Satumba-08-2023