Akụkọ - Igwe nchara nchara na-ekpo ọkụ: Isi ihe dị n'ubi mmepụta ihe

N'ime usoro mmepụta ihe nke oge a, eriri igwe na-ekpo ọkụ na-ekpo ọkụ bụ ihe ndị bụ isi, na ụdị dị iche iche nke ụdị na arụmọrụ dị iche iche na-emetụta kpọmkwem ntụziaka mmepe nke ụlọ ọrụ ndị dị n'okpuru ala. Ụdị dị iche iche nke igwe na-ekpo ọkụ na-ekpo ọkụ na-arụ ọrụ na-enweghị ike dochie anya n'ubi nke ihe owuwu, ụgbọ ala, ike, wdg na ihe mejupụtara kemịkalụ pụrụ iche na ihe eji arụ ọrụ. Ihe ndị na-esonụ ga-elekwasị anya n'ịtụle ụdị mkpuchi igwe na-ekpo ọkụ na-ekpo ọkụ na-achọ ahịa ahịa kachasị elu na isi ọdịiche ha.

Basic Main Force: Q235B na SS400
Q235B bụ ígwè arụrụ arụ obere carbon nke a na-ejikarị eme ihe na China, yana ọdịnaya carbon nke ihe dịka 0.12% -0.20%, ma nwee ezigbo plastik na ihe ịgbado ọkụ. Ya ike mkpụrụ bụ ≥235MPa na ọtụtụ-eji na-ewu okpokolo agba, akwa na-akwado na izugbe n'ibu akụkụ. N'ime ụlọ ọrụ na-ewu ụlọ, I-beams, Channel steels na ígwè ndị ọzọ nke Q235B na-ekpo ọkụ na-ekpo ọkụ na-eme ka ọ bụrụ ihe karịrị 60%, na-akwado ọkpụkpụ nke akụrụngwa obodo.
SS400 bụ ihe eji arụ ọrụ carbon arụ ọrụ nke mba ụwa nwere ike yiri nke Q235B, mana njikwa siri ike nke sọlfọ na sọlfọ na-adịghị ọcha yana mma elu dị mma. N'ebe a na-ewu ụgbọ mmiri, SS400 na-ekpo ọkụ na-ekpo ọkụ na-ejikarị eme ihe maka akụkụ nhazi. Nguzogide corrosion mmiri mmiri ya dị mma karịa ígwè carbon nkịtị, na-ahụ maka nchekwa nke njem ụgbọ mmiri.

Ndị nnọchi anya ike dị elu: Q345B na Q960
Q345B bụ ígwè dị ike dị ala nke nwere 1.0% -1.6% manganese gbakwunyere, na ike mkpụrụ dị n'elu 345MPa. E jiri ya tụnyere Q235B, ike ya na-abawanye site n'ihe dịka 50%, ebe ọ na-ejigide ezigbo weldability. N'ime injinia akwa mmiri, igbe igbe nke Q345B igwe na-ekpo ọkụ na-ekpo ọkụ nwere ike ibelata ibu site na 20%, na-ebelata ụgwọ ọrụ injinia nke ukwuu. N'afọ 2023, ihe owuwu akwa ime ụlọ ga-eri ihe karịrị nde tọn 12 nke mkpuchi mkpuchi Q345B, na-aza 45% nke mkpokọta ụdị a.
Dị ka onye nnọchiteanya nke ultra-high ike ígwè, Q960 na-enweta ike mkpụrụ nke ≥960MPa site na teknụzụ microalloying (na-agbakwụnye vanadium, titanium na ihe ndị ọzọ) na usoro ntụgharị na-achịkwa na-achịkwa. N'ebe a na-arụ ọrụ injinia, ọkpụkpụ nke ogwe aka crane nke Q960 na-ekpo ọkụ na-ekpo ọkụ nwere ike ibelata na ihe na-erughị 6mm, na ikike ibu ibu na-abawanye site na ugboro 3, nke na-akwalite nkwalite ngwa ngwa nke ngwa dịka ndị na-egwupụta ihe na cranes.

Igwe Igwe Igwe Igwe Igwe Igwe Igwe Igwe (24)

Ihe nrịbama pụrụ iche: SPHC na SAPH340
SPHC bụ ngwaahịa dị elu n'etiti ígwè ndị nwere obere carbon na-ekpo ọkụ. Site n'ịkwalite usoro ntụgharị iji chịkwaa nha ọka, elongation ruru ihe karịrị 30%. N'ụlọ ọrụ ngwa ngwa, SPHC na-ekpo ọkụ na-ekpo ọkụ na-ekpo ọkụ na-emepụta ụlọ ndị na-ekpo ọkụ na friji. Nrụpụta ihe osise ya dị omimi na-eme ka o doo anya na ọnụ ọgụgụ ruru eru nke elu gbagọrọ agbagọ gbagọrọ agbagọ karịrị 98%. N'afọ 2024, oriri SPHC na-ekpo ọkụ na-ekpo ọkụ na mpaghara ngwa ụlọ ga-abawanye site na 15% kwa afọ ruo nde 3.2.
Dị ka igwe eji arụ ọrụ ụgbọ ala, SAPH340 na-enweta nguzozi n'etiti ike na ike site na ịgbakwunye 0.15%-0.25% carbon na trace boron. Na n'ichepụta nke ọhụrụ ike ụgbọ ala batrị okpokolo agba, SAPH340 na-ekpo ọkụ akpọrepu coils nwere ike idi ike ibu nke ihe karịrị 500MPa na izute chọrọ nke ntụpọ ịgbado ọkụ Filiks. N'afọ 2023, ọnụ ọgụgụ nke mkpuchi mkpuchi na-ekpo ọkụ nke ụdị a na-eji ụgbọ ala ike ọhụrụ eruola 70% nke akụkụ nhazi batrị.

Nlereanya	Ike Mpụta (MPa)	Mgbatị (%)	Ihe ngosi ngwa a na-ahụkarị
Q235B	≥235	≥26	Ihe owuwu ụlọ, igwe n'ozuzu
Q345B	≥345	≥21	Bridges, arịa nrụgide
SPHC	≥275	≥30	Ngwa ụlọ, akụkụ akpaaka
Q960	≥960	≥12	Igwe injinia, akụrụngwa dị elu