Austenitic stainless steel, sɛnea edin no kyerɛ no, ne nhyehyɛe yɛ austenite, na ɔhyew a wɔde yɛ austenitic stainless steel no ho hia yiye, efisɛ adwuma a ɛho hia a ɛfa austenitic stainless steel ho ne corrosion resistance, ɔhyew a wɔmfa nyɛ adwuma yiye, ne corrosion resistance no so bɛtew kɛse, saa asɛm yi ka sɛ wofa ɔhyew ayaresa a ɛfa auslenitic stanels staned steel ho.
Austenitic stainless steel yɛ dade a ɛnyɛ den a wɔtaa de di dwuma (18-8 dade). Sɛ nhwɛso no, wɔde austenitic stainless steel na ɛyɛ tableware pii wɔ adididan mu. Austenitic stainless steel, sɛnea ne din kyerɛ no, yɛ austenite, a enni magnetic su biara na ɛnyɛ den.
Austenitic stainless steel wɔ corrosion resistance a ɛyɛ den yiye wɔ oxidizing tebea mu. Wobetumi ate nea wɔfrɛ no oxidizing environment no ase kɛkɛ sɛ tebea a oxygen pii wom. Austenitic stainless steel wɔ toughness pa na ɛnyɛ den sɛ wɔbɛyɛ ho adwuma na wɔayɛ, enti wɔde di dwuma kɛse.
Austenitic stainless steel no yɛ nea wɔde di dwuma titiriw ma corrosion resistance atirimpɔw ahorow, na ɔhyew a wɔde yɛ adwuma no nya so nkɛntɛnso kɛse. Austenitic stainless steels a ɛko tia corrosion resistance ne acid resistance no gyina surface passivation so titiriw. Sɛ wɔantumi ankura soro passivation no mu a, ɛbɛsɛe. Enti, austenitic stainless steel no nyɛ stainless koraa, ɛyɛ oxidizing ne acidic environments nkutoo. Wɔ ions soronko ho no, enni ɔsɔretia a emu yɛ den. Ɔhyew a wɔde yɛ austenitic stainless steel no nya passivation tumi a ɛwɔ soro no so nkɛntɛnso titiriw, na ɛnam so nya ne corrosion adwumayɛ so nkɛntɛnso.
Nkyene a ɛyɛ pɛ ne ade a ɛtaa nsɛe ade, na sɛnea nsɛe a ɛyɛ pɛ no gyina sɛnea chromium nneɛma no kyekyɛ no yɛ pɛ so. Ɔhyew ayaresa nya chromium nneɛma no kyekyɛ so nkɛntɛnso, a efi awosu mu no ɛka austenitic stainless steel a ɛyɛ pɛ a ɛko tia corrosion corrosion resistance no.
Intergranular corrosion nso yɛ corrosion su a ɛho hia a wɔde hwɛ austenitic stainless steels no mu biako. Sɛ yɛbɛka no ɔkwan biara so a, sɛ austenitic stainless steel no yɛ tesitized na carbides dodow bi a wɔde beaded ayɛ no pue wɔ aburow hye so a, intergranular corrosion adwumayɛ no so bɛtew kɛse. Sɛ austenitic stainless steel yɛ tesitized a, intergranular corrosion a emu yɛ den bɛba mpo wɔ electrochemical tebea a ɛtaa ba kɛse mu.
Intergranular corrosion a ɛpaapae .
Adwennwene a ɛpaapae no mu paapae ne ade a ɛtaa di huammɔ wɔ austenitic stainless steels mu. Ɛsɛ sɛ yɛhyɛ no nsow sɛ adwennwen a ɛpaapae no mu mpaapaemu gyina nneɛma atitiriw abien so: nea edi kan no, ɛsɛ sɛ adwennwen wɔ hɔ, a ebetumi ayɛ akyi adwennwen anaasɛ adwennwen a aka; Nea ɛto so abien no, adwennwen a ɛyɛ mmerɛw sɛ ɛbɛpaapae, te sɛ halogen element ions, titiriw chloride ions na ɛtaa ba. Baabi a wɔde austenitic stainless steel di dwuma no, mpɛn pii no wontumi mfa ne tumi a egyina adwennwen ano nni dwuma, enti ɛsɛ sɛ wɔde adwene si adwennwen a aka so titiriw, a ebetumi ama nhyɛso no ayɛ basaa wɔ tebea a chloride ions wom mu. Ɔkwan a wɔfa so yi residual stress fi hɔ ne stress relief annealing.
Austenitic dade a ɛnyɛ den nhyɛso corrosion mpaapaemu .
Pitting corrosion yɛ corrosion a ɛyɛ hu sen biara. Sɛ yɛbɛka sɛ ɛyɛ corrosion a ɛyɛ hu sen biara a, ɛfata kɛse sɛ yɛde tete asɛm bi bɛka ɔhaw yi ho asɛm sɛ: 'akwansin apem a ɛwɔ ntɛtea no berebuw mu no ahwe ase'. Nneɛma atitiriw abien na ɛma ɛyɛ mmerɛw sɛ ɛbɛpaapae: Nea edi kan no, nneɛma a ɛwom no nyɛ pɛpɛɛpɛ, te sɛ nkate, austenitic stainless steel no yɛ nea ɛyɛ mmerɛw titiriw sɛ ɛbɛpaapae; Nea ɛto so abien no, nneɛma a atwa yɛn ho ahyia a ɛma nneɛma nsɛe no dodow nyɛ pɛpɛɛpɛ, na ɛno nso ma ntease ba pitting corrosion mu. Sɛ pitting corrosion ba a, mpɔtam hɔ passivation film no sɛe, enti akansi bɛba aman abien a ɛyɛ nnam ne passivation ntam. Sɛ passivation ntumi mma a, pitting corrosion bɛkɔ so kosi sɛ component no mu bɛpaapae.
Austenitic dadeɛ a ɛnyɛ den a ɛwɔ pitting corrosion .
Austenitic stainless steel no nni solid-state nsakrae biara fi dan mu hyew so kosi ɔhyew a ɛkɔ soro so. Ɔhyew a wɔde yɛ adwuma no atirimpɔw ne sɛ ɛbɛma carbide ahorow a ɛba bere a wɔreyɛ no akɔ matrix no mu no apete, sɛnea ɛbɛyɛ a nneɛma a wɔde afra mu no kyekyɛ yɛ pɛ kɛse. Wɔma austenitic stainless steel no yɛ hyew ma ɛyɛ hyew kɛse na ama carbides no apete akɔ matrix no mu, na afei ɛma ɛyɛ nwini ntɛmntɛm ma ɛyɛ dan mu hyew. Wɔ saa adeyɛ yi mu no, austenitic stainless steel no renyɛ den, efisɛ phase nsakrae biara nni hɔ, na austenitic tebea no kɔ so tra dan mu hyew mu. Saa adeyɛ yi na wɔfrɛ no ano aduru ayaresa. Wɔ ano aduru ayaresa mu no, atirimpɔw a ɛwɔ onwini a ɛyɛ ntɛm mu ne sɛ ɛbɛma carbon atom ne nneɛma a wɔde afra mu no akyekyɛ ayɛ pɛ ara kwa.
Wɔ ano aduru a wɔde sa austenitic stainless steel, sɛ onwini dodow no yɛ brɛoo dodo, bere a ɔhyew no so tew a, carbon atom ahorow a ɛwɔ matrix no mu no so tew, na carbides bɛtɔ ntɛmntɛm. na carbon atom ahorow no yɛ mmerɛw titiriw sɛ wɔde bɛka chromium ho ma ayɛ M23C6 carbides, a wɔkyekyɛ wɔ aburow hye so, na chromium a ɛso tew no ba wɔ aburow hye so, na ɛde nkate ba. Bere a wɔayɛ austenitic stainless steel no nka akyi no, ɛsɛ sɛ wɔma ɛyɛ hyew sen 850 degrees Celsius, na carbides no bɛyɛ ano aduru a ɛyɛ den saa bere yi. Afei onwini a ɛyɛ ntɛm no betumi adi ɔhaw a ɛfa nkate ho no ho dwuma. Sɛnea ɛbɛyɛ a wɔbɛsakra wɔn ho akɔ austenite pɔtee no mu no, . Hangao Tech (Seko mfiri) anya nkɔso wɔ mfitiase no so . Online Heat Preservation Induction Heating Furnace a Ɛyɛ Fɛ a Ɛyɛ Fɛ . Sɛnea ɛbɛyɛ a wobetumi ahwɛ carbon a ɛtɔ ne onwini a ɛyɛ ntɛm so no, ɔfã a ɛma onwini no de hydrogen mframa a ɛma ɛyɛ nwini di dwuma. Nneɛma a wɔde sesa a ɛnam graphite cooling jacket a ɛwɔ graphite cooling tunnel ne dadeɛ paipu no ntam a ɛka no so no so tew, na paipu a wɔawie no su ne ne dwumadie tu mpɔn kɛseɛ.
Sɛ wowɔ ɔhaw bi wɔ annealing a ɛyɛ hyew a ɛwɔ austenitic stainless steel tubes mu a, yɛsrɛ wo, di yɛn ho nkɔmmɔ na yɛnkɔ anim nkɔhwɛ na yɛate ase.
