317/317L igwe anaghị agba nchara chemical mejupụtara

Alloy 317L (UNS S31703) bụ molybdenum-agba austenitic igwe anaghị agba nchara nke ukwuu na-eguzogide ọgwụ ọgụ ma e jiri ya tụnyere chromium-nickel austenitic igwe anaghị agba nchara dị ka Alloy 304. Na mgbakwunye, Alloy 317L na-enye elu creep, nrụgide-na- mgbawa, na ike ntanye na okpomọkụ dị elu karịa igwe anaghị agba nchara.Ọ bụ ọkwa carbon dị ala ma ọ bụ “L” nke na-enye nguzogide nleba anya n'oge ịgbado ọkụ na usoro ikpo ọkụ ndị ọzọ.

317/317L igwe anaghị agba nchara chemical mejupụtara

Nguzogide corrosion

Ọdịnaya molybdenum dị elu nke Alloy 317L na-emesi ike izugbe na nguzogide corrosion nke mpaghara n'ọtụtụ mgbasa ozi ma e jiri ya tụnyere 304/304L na 316/316L igwe anaghị agba nchara.Gburugburu ebe a na-ebusoghị igwe anaghị agba nchara 304/304L agaghị emebi 317L.Otu ewepu, Otú ọ dị, bụ ike oxidizing asịd dị ka nitric acid.Alloys nwere molybdenum anaghị arụ ọrụ nke ọma na gburugburu ndị a.

317/317L igwe anaghị agba nchara chemical mejupụtara

Alloy 317L nwere magburu onwe corrosion eguzogide a dịgasị iche iche nke chemicals.Ọ na-eguzogide ọgụ na sulfuric acid, acidic chlorine na phosphoric acid.A na-eji ya na-ejikwa organic na-ekpo ọkụ na abụba abụba na-adịkarị na nri na ngwa nhazi ọgwụ.

317/317L igwe anaghị agba nchara chemical mejupụtara

Nguzogide corrosion nke 317 na 317L kwesịrị ịbụ otu na gburugburu ebe ọ bụla.Otu ihe dị iche bụ ebe a ga-ekpughere alloy na okpomọkụ na oke mmiri ozuzo chromium carbide nke 800 – 1500°F (427 – 816°C).N'ihi ọdịnaya carbon ya dị ala, 317L bụ ihe kachasị amasị na ọrụ a iji chebe megide corrosion intergranular.

N'ozuzu, austenitic igwe anaghị agba nchara nọ n'okpuru chloride stress corrosion cracking na halide ọrụ.Ọ bụ ezie na 317L dị ntakịrị ihe na-eguzogide nrụgide corrosion mgbawa karịa 304/304L igwe anaghị agba nchara, n'ihi ọdịnaya molybdenum dị elu, ọ ka nwere ike ime ya.

Chromium dị elu, 317/317L igwe anaghị agba nchara kemịkalụ kemịkalụ molybdenum na nitrogen ọdịnaya nke 317L na-eme ka ike ya guzogide pitting na crevice corrosion n'ihu chlorides na ndị ọzọ halides.Ihe Nguzogide Ndozi nke Pitting gụnyere nọmba Nitrogen (PREN) bụ ihe atụ nke nguzogide pitting.Chaatị na-esonụ na-enye ntụnyere Alloy 317L na ndị ọzọ austenitic igwe anaghị agba nchara.