Mgbawa nwere ọtụtụ akụkụ
N'ihu crystallization siri ike, n'okpuru omume nke okpomọkụ dị elu na nrụgide, ntụpọ lattice na-agagharị ma na-agbakọta iji mepụta oke nke abụọ, nke dị na ala plastik dị ala na okpomọkụ dị elu, na-eme ka ọkpụkpụ na-emepụta n'okpuru omume nke nrụgide. Mgbawa dị iche iche na-emekarị na welds nke ọla dị ọcha ma ọ bụ otu-phase austenitic alloys ma ọ bụ na gburugburu nke ọnụ ọnụ, na ha so na ụdị nke na-ekpo ọkụ cracks.
Megharịa mgbawa
N'ihi na ígwè na oké efere welded Ọdịdị na ụfọdụ mmiri ozuzo-ike alloying ọcha, cracks na-eme na keadighi rarii-grained akụkụ nke ịgbado ọkụ okpomọkụ emetụtara mpaghara n'oge nrụgide enyemaka okpomọkụ ọgwụgwọ ma ọ bụ ọrụ na a ụfọdụ okpomọkụ na-akpọ reheat cracks. Mgbawa ọkụ na-ekpo ọkụ na-emekarị n'ime akụkụ ndị na-adịghị ahụkebe nke welding okpomọkụ emetụtara nke obere alloy elu-ike ígwè, pearlitic okpomọkụ na-eguzogide ígwè, austenitic igwe anaghị agba nchara na ụfọdụ nickel dabeere alloys.
Oyi mgbawa
Ihe mgbawa oyi bụ ụdị mgbawa a na-emepụta na ịgbado ọkụ, bụ nke a na-emepụta mgbe oyi na-atụ oyi na okpomọkụ dị ala mgbe ịgbado ọkụ. Oyi cracks tumadi ime na ịgbado ọkụ okpomọkụ emetụta mpaghara nke ala alloy ígwè, ọkara alloy ígwè, ọkara carbon na elu carbon ígwè. N'otu n'otu, dị ka mgbe ịgbado ọkụ ultra-oke ike steels ma ọ bụ ụfọdụ titanium alloys, oyi na-atụ na-apụtakwa na weld metal.
Dị ka ụdị nchara dị iche iche na ihe a ga-eji welded, e nwekwara ụdị dị iche iche nke oyi oyi, nke nwere ike kewaa n'ụzọ atọ ndị a:
Mgbawa egbu oge
Ọ bụ ụdị mgbawa oyi na-adịkarị. Isi njirimara ya bụ na ọ naghị apụta ozugbo ịgbado ọkụ, ma ọ nwere oge nchikota n'ozuzu, ma ọ bụ mgbape na njirimara egbu oge nke a na-emepụta n'okpuru ngwakọta nke usoro siri ike, hydrogen na nkwụsịtụ.
Na-emenyụ mgbawa
Ụdị mgbape a anaghị egbu oge, a na-ahụ ya ozugbo ịgbado ọkụ, mgbe ụfọdụ ọ na-eme na weld, mgbe ụfọdụ ọ na-eme na mpaghara okpomọkụ emetụta. Tumadi enwere ihe owuwu siri ike, mgbawa na-ebute n'okpuru nrụgide ịgbado ọkụ.
Obere Plastic Embrittlement mgbawa
Maka ụfọdụ ihe nwere rọba dị ala, mgbe oyi na-ekpo ọkụ na-adị ala, nsogbu nke ike mbelata na-akpata na-akarị ebe nchekwa rọba nke ihe ahụ n'onwe ya ma ọ bụ mgbawa nke ihe ahụ kpatara na-aghọ nke na-akụkụ. N'ihi na a na-emepụta ya na obere okpomọkụ, ọ bụkwa ụdị ọzọ nke mgbawa oyi, ma ọ dịghị ihe na-egbu oge.
Laminar Tearing
Na n'ichepụta usoro nke nnukwu mmanụ mmepụta nyiwe na oké-walled arịa mgbali, nzọụkwụ cracks yiri nke Rolling direction mgbe ụfọdụ, a na-akpọ laminar tearing.
Ọ kachasị n'ihi ịdị adị nke ntinye akwa (n'akụkụ ntụgharị ntụgharị) n'ime efere ígwè ahụ, nrụgide a na-ebute n'oge ịgbado ọkụ na-adabere na ntụgharị ntụgharị, na-eme ka ọdịdị nke "steepụ" dị na mpaghara okpomọkụ emetụtara n'ebe dị anya site na ọkụ. dọwara.
Nchegbu corrosion mgbawa
Ịgbawa oge ụfọdụ ụlọ welded (dị ka arịa na ọkpọkọ) n'okpuru njikọ nke mgbasa ozi na-emebi emebi na nrụgide. Ihe ndị na-emetụta nrụgide corrosion cracking gụnyere ihe nke ihe owuwu ahụ, ụdị ihe na-eme ka ọ bụrụ ihe na-emebi emebi, ọdịdị nke nhazi ahụ, usoro mmepụta na ịgbado ọkụ, ihe ịgbado ọkụ, na ogo nke nchekasị. Nchegbu corrosion na-eme n'oge ọrụ.
Oge nzipu: Eprel-24-2022