Kufananidza kwe induction kudziyisa tempering uye furimi tempering

Inofananidzwa ne tempering muvira, induction kudziyisa tempering ine zvinotevera zvakanaka.

1) Nguva yekupisa ipfupi uye negoho rakakwira. Iko tembiricha inokwira mwero weiyo induction yakadzika tembiricha tempering ndeye 4-20T / s, iyo tembiricha inokwira mwero wepakati uye yakanyanya tembiricha tempering ndeye 5-30Y / s, iyo cylinder liner inoshandisa simba frequency tempering, 3 zvidimbu panguva, uye iyo tempering nguva ye220Y ndeye 30-40s.

2) Yakagadzikana uye iri nani michina zvivakwa inogona kuwanikwa.

Mumwe munhu akaitisa kuyedza pa induction hardening, induction kudziyisa uye tempering (IH), choto kudziyisa uye tempering (FH) yePC simbi mabara. Iwo technical technical paramita eanopisa ekurapa maratidziro anoratidzwa mune tafura.

Mhando mbiri dzekupisa kurapwa maitiro ehunyanzvi parameter

Iyi miedzo miviri inoratidza kuti:

1) Mune maviri ekupisa nzira, kuomarara kwesimbi bar sampuro kunoderera zvine mutsetse pamwe nekuwedzera kwetembiricha yekupisa.

2) Kuti uwane iyo imwechete yekuomarara kuomarara, iyo tembiricha yekupisa yeH ndeye 100-130 – yakakwira kupfuura iyo yeFH. Uyu mutsauko unogona kutsiva zvikanganiso zvinokonzerwa nepfupi IH kupisa nguva.

3) Uchishandisa X-ray diffraction ongororo, iwo maseru zvikamu zvekuchengetwa kweaustenite kuyerwa neepamusoro-frequency induction kupisa uye yakawandisa moto kupisa masampuli aive 4.3% uye 3%, zvichiteerana, uye zvishoma nezvishoma zvakaderera nekuwedzera kwekushisa kwekushisa; asi kune Panguva imwecheteyo tembiricha yekupisa, iyo yakachengetedzwa austenite zvemukati zveiyo IH sampu iri pamusoro kupfuura iyo yeFH. Pana 400 ° C tembiricha yekupisa, chikamu chakakura cheakachengeterwa austenite muFH chiri pasi pe1%, nepo yekare iri 2.7%. Kana iyo tembiricha yekupisa yakadzikira pane mazana matanhatu emamiriyoni, chikamu chakakura cheakachengetwa austenite hachizove chakaderera pane 600%. Musiyano weiyi nzira yekupisa nekuda kwenzira dzakasiyana dzekupisa zvakare chimwe chehunhu hwekupinza mweya.

4) Hukama huri pakati penzira yekurapa yekupisa uye zvemagetsi zvivakwa. Kuti tienzanise michina zvimiro zveH uye FH sampuli, hukama pakati pesimba, kusagadzikana, kuomarara uye kuomarara kunowanikwa mune dzakasiyana michina bvunzo zvakapfupikiswa, uye mhedzisiro yacho ndeinotevera:

Iyo tensile simba, goho simba uye shear simba ese anowedzera pamwe nekuwedzera kwekuoma (mutsauko uripo pakati peH neFH hauna kukura). Uye zvakare, kunyangwe iwo mutoro wekushushikana mapatani akasiyana, iyo reshiyo yesheya simba kune tensile simba inosiyana ingangoita munzvimbo ye0.6 kusvika 0.7, saka mutsauko munzira yemhando dzakasiyana shanduko yesimba zvakare idiki kwazvo.

Pane chero kuomarara, iko kuoma uye kuomarara kweiyo IH sampuli kwakakwirira kupfuura kweiyo FH sampuli. Uchishandisa IH kuwedzera chiyero chepurasitiki, kukwirisa mushure mekutsemuka kuri 10%, kuderedzwa kwenzvimbo kuri 30%, uye kumwe kukwirira se70%. Naizvozvo, zvichienzaniswa neiyo FH sampuro, iyo IH sampu ine tsanga dzakanaka uye simba rakanakisa uye kuomarara. Mushure mekushisa kwakanyanya kupisa, iyo sampuli ine yakawanda yakachengetwa austenite, iyo inogona kuvandudza kupora uye kuomarara kwesimbi. ; Kana iwo maviri kuomarara akafanana, IH inokurumidza uye ipfupi-nguva kupisa, saka tembiricha yayo yekupisa yakakwira kupfuura FH.

Muchidimbu, mashandiro eiyo IH-yakarapwa sampuro iri nani pane iyo FH sampuro. Izvo zvinofanirwa kucherechedzwa kuti nekuda kwekumhanya uye ipfupi nguva yeiyo induction tempering, iyo tembiricha yekupisa yakanyanya kukwirisa kupfuura iyo yekupisa muvira ne 100-130 ° C. Zvichienzaniswa nekupisa mukati mevira, kuzvidzora kunowedzera tembiricha zvakanyanya.