Ndezvipi zvinhu zvinofanirwa kutariswa pazviri pakudzima cast iron induction heat choto?

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:

Nguva yekupisa yakareba kudarika yezvikamu zvesimbi. Kazhinji, inofanira kunge inopfuura masekondi mashomanana uye inofanira kuchengetwa kwekanguva kuitira kuti iyo insoluble structure inogona kunyungudutswa mu austenite. Kana iyo yekudziya yekumhanyisa ichimhanya zvakanyanya, inokonzeresa yakawandisa yekupisa kushushikana uye kutsemuka.

Tembiricha yekudziya haifanirwe kunge yakanyanya kukwirira, muganho wepamusoro i950 ℃, kazhinji 900 ~ 930 ℃, magiredhi akasiyana ane tembiricha yakakwana, kana tembiricha yekupisa inosvika 950 ℃, phosphorus eutectic ichaonekwa pamusoro pechikamu, uye ipapo. ichave yakaoma yakachengetwa austenite .

3) Kuti uite kutonhora zvishoma nezvishoma kushanduka kubva kumusoro kusvika pakati, zvakanakisisa kuti usadzima pakarepo mushure mekupisa, uye kusati kwatonhora kwe 0.5 ~ 2s kwakanakisisa.

4) Induction heating furnace quenching of iron castings generally uses polymer aqueous solution or oil as the quenching cooling medium, and some parts such as the cylinder liner are directly quenched with water as the quenching cooling medium, and the valve seat of the cylinder body is quenched by self-cooling.

5) Mushure mekunge grey iron castings yadzimwa muchoto chekupisa, kudziya kwakadzika kunofanira kuitwa kuitira kubvisa kushushikana. Semuenzaniso, cylinder liner inofanirwa kudzikamiswa pamagetsi frequency

Iyo matrix yeferritic inogoneka yakakandwa simbi ndeye ferrite uye graphic kabhoni. Kuti uparadze kabhoni mu austenite, zvinodikanwa kuwedzera tembiricha yekudziya (1050 ℃) uye kuwedzera nguva yekudziya (kusvika ku1min kana kupfuura), kuitira kuti uite chikamu chidiki Graphite kabhoni inonyungudika mu austenite, uye yakakwirira pamusoro. kuoma kunogona kuwanikwa mushure mekudzima.