I-42CrMo ishidi lentsimbi eshushu eliqengqelekayo/bar

I-42CrMo4 yintsimbi yokucima kunye nokufudumeza, enendibaniselwano elungileyo yamandla kunye nokuqina kwimeko yokucima kunye nobushushu. Emva kokucima i-oyile, intsimbi iya kuqiniswa ukuya kuthi ga kwibham ye-ø60 mm. I-microstructure yemilinganiselo emikhulu ayikho i-martensite ngokupheleleyo. Intsimbi iyasebenza kwi-induction lukhuni. Ubunzima bomphezulu buya kudlula i-min. 53 HRC. I-42CrMo4 inokuziswa i-M-iphathwa ukuze kunyuswe ubuchule bokusebenza.

Ukuqulunqwa kwemichiza
IBanga leNsimbi	C	Si	Mnu	P	S	Cr	Mo	Cu
35CrMo	0.38～0.45%	0.17～0.37%	0.50～0.80%	≤0.035%	≤0.035%	0.90～1.20%	0.15～0.25%	≤0.30%

Iimpawu zoomatshini

Amandla okuvelisa σs/MPa (>=)	Amandla okuqina σb/MPa (>=)	Elongation δ5/% (>=)	Ukuncitshiswa kwe indawo ψ/% (>=)	Impembelelo efunxa amandla i-Aku2/J (>=)	Ubunzima HBS 100/3000 max
≥930(95)	≥1080(110)	≥12	≥45	≥78(8)	≤217HB

Ukonyusa ubomi bokufa ukuya kuma-800,000 amaxesha okufa, intsimbi yangaphambi kokuqina inokuqina ngokucinywa kunye nobushushu obuphantsi. Xa ucima, tshisa kwi-500-600 ℃ kwiiyure ze-2-4, kwaye uyigcine kwi-850-880 ℃ ixesha elithile (ubuncinci iiyure ezi-2), uze uyibeke kwioli kwaye upholile kwi-50-100 ℃ kwaye Ukupholisa umoya, ubunzima bunokufikelela kwi-50 emva kokucima -52HRC, ukwenzela ukuthintela ukuqhekeka, i-200 ℃ unyango oluphantsi lobushushu obuphantsi kufuneka luqhutywe ngokukhawuleza. Emva kokufudumala, ubunzima bunokugcinwa ngaphezulu kwe-48HRC.

42CrMo Steel Heat Treatment

Ukuhlaziya

Ukufakwa kwi-760±10℃, ukupholisa kwiziko ukuya kuma-400℃ emva koko ukupholisa umoya.

Ukulungelelanisa

Ukwenza isiqhelo kwi-760±10℃, ukupholisa umoya emva kokuphuma ezikweni.

Amanqaku amalunga nokuQinisa kunye noNyango lokuFundisa

Kufuneka unike ingqwalasela kubushushu besipholisi solwelo. Kwaye kufuneka aqinisekise ukuba akukho kungcoliseka kweoyile okanye okunye ukungcola. Ngaphandle koko, ubunzima bensimbi abuyi kuba ngokwaneleyo okanye ngaphandle kokulinganisela.

Ukucima kunye nokuvutha kwezinto zensimbi ye-billet ngaphandle kokucubungula, ngoko kuya kufumana ubulukhuni obungafani. Ngoko ke ukusetyenzwa kokwenziwa okanye ukugaya kuyimfuneko phambi kweQ+T.