42CrMo na-ekpo ọkụ mpịakọta ígwè mpempe akwụkwọ / mmanya

42CrMo4 bụ ígwè maka imenyụ na iwe ọkụ, nke nwere ezigbo nchikota ike na ike dị n'ime ọkụ na ọnọdụ ọkụ. Mgbe mmanụ gwụchara, a ga-esi na ya sie ike nchara ahụ ruo dayameta mmanya ø60 mm. Microstructure nke akụkụ buru ibu abụghị martensite zuru oke. Igwe a na-adabara maka ike ike induction. Isi ike nke elu ga-agafe nkeji. 53 HRC. Enwere ike ịnapụta 42CrMo4 M-agwọta iji bulie igwe eji arụ ọrụ.

Ngwakọta kemịkalụ
Ọkwa ígwè	C	Si	Mn	P	S	Cr	Mo	Ku
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%

Ngwa igwe

Ike mpụta σs /MPa (>=)	Ike tensile σb/MPa (>=)	Ogologo oge δ5/% (>=)	Mbelata mpaghara ψ/% (>=)	Mmetụta nnabata ike Aku2/J (>=)	Isi ike HBS 100/3000 max
930 (95)	1080 (110)	≥12	≥45	≥78 (8)	≤217HB

Iji mee ka ndụ nwụrụ anwụ karịa 800,000 oge anwụ, enwere ike ime ka ígwè ahụ emechara sie ike site na imenyụ ọkụ na obere okpomọkụ. Mgbe quenching, preheat na 500-600 ℃ maka 2-4 awa, wee debe ya na 850-880 ℃ maka a ụfọdụ oge (dịkarịa ala 2 awa), mgbe ahụ, tinye ya na mmanụ na jụụ ka 50-100 ℃ na ikuku jụrụ, ndị ekweghị ekwe nwere ike iru 50 mgbe quenching -52HRC, iji gbochie cracking, 200 ℃ obere okpomọkụ tempering ọgwụgwọ kwesịrị rụrụ ozugbo. Mgbe iwe gachara, enwere ike idowe ike ahụ karịa 48HRC.

Ọgwụgwọ ọkụ 42CrMo Steel

Na-ewe iwe

Annealing na 760 ± 10 ℃, ọkụ jụrụ 400 ℃ mgbe ahụ ikuku jụrụ.

Na-emezigharị

Normalizing na 760 ± 10 ℃, ikuku jụrụ mgbe nke ọkụ.

Ihe ndetu gbasara ọgwụgwọ imenyụ na iwe ọkụ

Ga-aṅa ntị na okpomọkụ nke mmiri mmiri coolant. Ma hụ na ọ nweghị mmetọ mmanụ ma ọ bụ adịghị ọcha ndị ọzọ. Ma ọ bụghị ya, ike nke ígwè agaghị ezuru ma ọ bụ pụọ na nguzozi.

Ngwunye na iwe ọkụ maka ihe nchara billet na-enweghị nhazi, mgbe ahụ, ọ ga-esi ike na-enweghị ụdị. Ya mere nhazi nke forging ma ọ bụ egweri dị mkpa tupu Q+T.