Ngwọta ngwọta nke igwe anaghị agba nchara tubes

Igwe anaghị agba nchara ọkpọkọ ugbu a na-eji ọtụtụ ebe, n'ihi na ya ezi corrosion eguzogide ekerewo òkè dị mkpa na engineering ewu, na usoro nke mmepụta anyị mkpa a siri ike ngwọta maka igwe anaghị agba nchara tube nhazi, isi nzube bụ iji nweta ụfọdụ martensite abawanye. ike nke ngwaahịa, ka anyị lee ihe ngwọta nke igwe anaghị agba nchara tube nhazi:

(1) Mgbe ọgwụgwọ ọgwụgwọ gasịrị, ọ na-ewe iwe na (760 ± 15) ℃, na ọdịnaya nke carbon na alloyed ọcha na austenitic 904L igwe anaghị agba nchara tube na-ebelata n'ihi ọdịda nke Cr23C6 carbide si austenitic 904L igwe anaghị agba nchara tube maka. 90min, nke mere na a na-ebuli ihe Ms ahụ ruo 70 ℃ wee mee ka ọ dị jụụ n'ime ụlọ iji nweta martensite + αferrite + residual austenitic structure.E mebiri ihe fọdụrụ austenite site na ịka nká na 510 ℃.

(2) mgbe mgbanwe okpomọkụ dị elu na ọgwụgwọ cryogenic, e bu ụzọ kpoo ngwọta ahụ ruo 950 ℃ ma jide ya maka 90min.N'ihi mmụba nke isi okwu Ms, enwere ike nweta obere martensite mgbe ọ jụrụ n'ime ụlọ.Mgbe nke ahụ gasịrị, a pụrụ inweta ụfọdụ ego nke martensite site na -70 ℃ ọgwụgwọ oyi na ijide 8h.

(3) Mgbe ọgwụgwọ ngwọta site na usoro nrụrụ oyi, martensite nke 904L na-enweghị nkebi tube na-eme ka oyi na-atụ na okpomọkụ.Ọnụ ego nke martensite nke 904L na-enweghị ntụpọ tube n'oge nrụrụ oyi na-ejikọta ya na ọnụọgụ nrụrụ na ihe mejupụtara 904L igwe anaghị agba nchara.

Ụzọ atọ ndị a dị n'elu ka a na-ejikarị igwe anaghị agba nchara tube ngwọta usoro ọgwụgwọ na-atụ anya iwetara gị enyemaka.