Alloys ọdịnala na-arụ ọrụ ọkọlọtọ n'imepụta ọla, ma ọ bụ igwe anaghị agba nchara na-eji ngwaọrụ ahụike ma ọ bụ nri mmiri, ọgbọ ọ bụla nke nchara dị elu mepụtara n'ime iri afọ ole na ole gara aga maka ụlọ ọrụ ụgbọ ala, ma ọ bụ ọla dị ka aluminom na titanium.nke nwere ike dị elu na nha nha na nguzogide corrosion dị elu na-eme ka ọ dị mma maka ngwa na mbara igwe, ncha mmanụ na ụlọ ọrụ kemịkalụ.
Otu a na-emetụta ụfọdụ carbon steel alloys, karịsịa alloys nwere ụfọdụ carbon na manganese ọdịnaya.Dabere na ego nke alloying ọcha, ụfọdụ n'ime ha na-ọma ruru eru maka imewe nkeflanges, akwa akwanapipelinena chemical na mmanụ refineries.Ha niile nwere otu ihe jikọrọ: ihe ndị a na-eji na ngwa ndị a ga- ductile zuru ezu na-nagide brittle fracture na stress corrosion cracking (SCC).
Otu ụkpụrụ dị ka American Society of Manufacturing Engineers (ASME) na ASTM Intl.(nke a na-akpọbu American Society for Testing and Materials) na-enye nduzi na nke a.Koodu ụlọ ọrụ abụọ metụtara-Igwe ọkụ ASMEna Pressure Vessel (BPVD) Nkebi nke VIII, Nkebi 1, na ASME B31.3, Usoro Piping - adreesị carbon ígwè (ihe ọ bụla nwere 0.29% na 0.54% carbon na 0.60% na 1.65% manganese, ígwè nwere ihe).na-agbanwe nke ọma maka ojiji na ihu igwe na-ekpo ọkụ, mpaghara ihu igwe na okpomọkụ dị obere ka -20 degrees Fahrenheit.Otú ọ dị, ihe ndọghachi azụ n'oge na-adịbeghị anya na ọnọdụ okpomọkụ emewo ka a nyochaa nke ọma nke ọnụọgụ na nha nke ihe dị iche iche nke microalloying a na-eji na-emepụta flanges dị otú ahụ, akwa akwa na akwa. api ígwè ọkpọkọ.
Ruo n'oge na-adịbeghị anya, ọ bụghị ASME ma ọ bụ ASTM chọrọ nnwale mmetụta iji kwado ductility nke ọtụtụ ngwaahịa carbon steel ejiri na okpomọkụ dị obere ka -20 degrees Fahrenheit.Mkpebi ịwepụ ụfọdụ ngwaahịa dabere na njirimara akụkọ ihe mere eme nke ihe.Ọmụmaatụ, mgbe opekempe okpomọkụ imewe metal (MDMT) bụ -20 degrees Fahrenheit, ọ na-apụrụ na mmetụta nnwale n'ihi na omenala ọrụ ya na ngwa dị otú ahụ.
Oge nzipu: Eprel-19-2023