Yeyiphi imiba ekufuneka inikwe ingqwalasela xa kucinywa isithando somlilo sokufudumeza intsimbi?

Among all kinds of cast iron, the induction heating furnace quenching of gray cast iron is the most difficult. The quenching of gray cast iron induction heating furnace is similar to steel, and the quenching equipment used is also similar. The following differences should be noted:

Ixesha lokufudumala lide kuneengxenye zetsimbi. Ngokuqhelekileyo, kufuneka ibe ngaphezu kwemizuzwana embalwa kwaye kufuneka igcinwe ixesha elithile ukwenzela ukuba isakhiwo esingenakunyibilika singachithwa kwi-austenite. Ukuba isantya sokufudumeza sikhawuleza kakhulu, siya kubangela uxinzelelo olugqithisileyo lwe-thermal kunye nokuqhekeka.

The heating temperature should not be too high, the upper limit is 950℃, generally 900~930℃, different grades have an optimal temperature, when the heating temperature reaches 950℃, phosphorus eutectic will appear on the surface of the part, and there will be coarse retained austenite .

3) Ukuze wenze iqondo lokushisa litshintshe ngokukhawuleza ukusuka kumphezulu ukuya kwinqanaba, kungcono ukuba ungacimi ngokukhawuleza emva kokufudumeza, kunye nokupholisa kwangaphambili kwi-0.5 ~ 2s kungcono.

4) I-Induction yokufudumeza isithando somlilo sokucinywa kwentsimbi ngokuqhelekileyo isebenzisa isisombululo se-polymer yamanzi okanye i-oyile njengendawo yokupholisa, kwaye ezinye iindawo ezifana ne-cylinder liner zicinywa ngokuthe ngqo ngamanzi njengendlela yokupholisa, kunye nesihlalo sevalve somzimba we-cylinder. acinywe kukuzipholisa.

5) Emva kokuba iintsimbi ezingwevu zicinywe kwisithando sokufudumala se-induction, ukushisa okuphantsi kufuneka kuqhutywe ukwenzela ukuphelisa uxinzelelo. Ngokomzekelo, i-cylinder liner kufuneka ifakwe kwi-frequency frequency power

I-matrix ye-ferritic yentsimbi ethambileyo etyhidiweyo yi-ferrite kunye nekhabhoni yegraphic. Ukuze kunyibilike carbon in austenite, kuyimfuneko ukunyusa ubushushu bobushushu (1050 ℃) kunye nokwandisa ixesha lokufudumeza (ukuya kwi-1min okanye ngaphezulu), ukuze wenze inxalenye encinane Graphite carbon inyibilika kwi austenite, kunye nomgangatho ophezulu. ubunzima bunokufumaneka emva kokucima.