Ngaba i-45 # intsimbi idinga ukupholisa?

Isidingo sokufudumala okongeziweyo sigqitywa yimeko. Ukuba ubushushu obushiyekileyo bunokulawulwa ngexesha lokucinywa, akukho mfuneko yokongezwa kobushushu obuphantsi.

Ubume kunye neepropathi ze-45 # zentsimbi emva kokuqhawula, ukulinganisa, ukucima kunye nokuvutha.

45# ukufakwa kwentsimbi: ferrite + pearlite;

45 # intsimbi eqhelekileyo: ferrite + pearlite;

45 # ukucima intsimbi: martensite;

I-45 # i-steel tempering: i-martensite epholileyo (iqondo lokushisa eliphantsi), i-troostite epholileyo (iqondo lokushisa eliphakathi), i-sorbite epholileyo (iqondo lokushisa eliphezulu).

Ubume bentsimbi ye-45 # emva kokuqhelekileyo yi-ferrite + isakhiwo se-pearlite, isakhiwo emva kokucima sisakhiwo se-martensite, kunye ne isakhiwo emva kokucima + 400 ℃ ubushushu bubushushu besakhiwo setroostite. Ubulukhuni bentsebenzo obuqhelekileyo bungaphantsi kwe-HB200, kodwa izinto eziphathekayo kulula ukuba zenziwe ngoomatshini, ezisesona sicwangciso senkqubo ephambili. Ukucima +400℃ ukuthoba ubulukhuni kulungile kakhulu, ngaphezulu kwe-HB300.

Ubunzima be-45 # intsimbi ecinyiweyo kunye nobushushu buphakathi kwe-HRC20 ~ HRC30;

Ukucima ubunzima be-45 # yensimbi phakathi kwe-HRC55 ~ 58, kwaye ixabiso linokufikelela kwi-HRC62;

Kuthatha iintsuku ezingama-15-20 ukuze kusetyenziswe intsimbi ye-45 # kuba idinga unyango lokuguga ukuzinzisa ukusebenza kwentsimbi.

Obona bunzima buphezulu kwisicelo esisebenzayo yi-HRC55 (i-high-frequency quenching HRC58).

I-45 # insimbi yintsimbi ephezulu ye-carbon structural enobunzima obuphantsi kunye nokucutshungulwa ngokulula. Ngokuqhelekileyo isetyenziselwa ukubumba njengeetemplates, iingcebiso, izithuba zesikhokelo, njl., Kodwa unyango lobushushu luyafuneka.