1.What yog qhov tshwj xeeb muaj pes tsawg leeg muaj pes tsawg leeg ntawm 253mA untist s31727 superalalloy ss yeeb nkab thiab nws yuav ua li cas pab nws pab nws cov khoom?
Lub 253ma tsis yog s31727 Superalloy SS cov yeeb nkab muaj cov khoom sib xyaw ua tib zoo sib xyaw. Chromium, tam sim no nyob rau hauv qhov ntau ntawm 20.00 - 22.00%, uas yog lub hauv paus tseem ceeb, tshwj xeeb tshaj yog nyob rau hauv siab- kub thiab corrosive ib puag ncig. Npib tsib xee, nrog cov ntsiab lus ntawm 10.0 - 12.00}%, txhim kho cov yeeb nkab ua qauv thiab tawv ntawm ntug dej kub. Silicon, nyob rau hauv 1.40 - 2.0 ntau, nrog rau ib qho me me ntawm Ceeline (}}}} hloov cov alloy tus oxidation tsis kam. Nitrogen, ntawm {0.14 - 0.20}%, ua rau nws cov yeeb nkab muaj peev xwm tswj hwm nws cov qauv kev sib raug zoo hauv qab- kub ntxhov siab. Qhov no tshwj xeeb kev sib xyaw ntawm cov ntsiab ua rau 253ma yeeb nkab kom tiv thaiv kub txog li 1150 degree, ua rau nws ob lub corrosion tsis kam.
2.Yog li cas 253ma tsis yog s31727 SuperSlloy SS yeeb ua nyob rau hauv cov nqe lus ntawm cov neeg kho tshuab thiab siab {} cov khoom kub?
Mechanically, nyob rau hauv chav tsev kub, lub zog 252% lees lub zog ntawm tsawg kawg 550 n / mm², nrog ib tug elongation ntawm tsawg kawg 35%. Cov txiaj ntsig tseem ceeb no ua kom zoo thaum ua kev tsim qauv. Thaum muaj kub kub, nws tau ci ntsa iab. Nws muaj qhov ua tau zoo heev thiab nkag dag zog zog, uas txhais tau tias nws tuaj yeem tawm tsam lub sijhawm nyob rau hauv high {} {9} kev nyuaj siab mob. Nws cov nplai kub yuav ncav cuag mus txog 1150 degree, qhia tau zoo oxidation tsis kam. Nyob rau hauv feem ntau gaseous media, nws qhia tau zoo tsis kam mus rau high- kev xeb thiab txhuam kev xeb. Cov yeeb nkab kuj tseem muaj cov txiaj ntsig zoo thiab lub zog kub, uas yog qhov tseem ceeb rau kev siv hluav taws xob, uas nws yuav raug rau ob qho tib si kub siab thiab kev ntxhov siab.
3.Qhov kev lag luam thiab cov kev siv tshwj xeeb yog 253ma tsis yog s31727 superalalloy SS cov yeeb nkab feem ntau siv?
Qhov kev siv yeeb nkab superalloy no yog siv dav nyob thoob plaws ntau kev lag luam. Hauv kev lag luam muaj zog, nws tuaj yeem pom hauv cov khoom siv ntawm boilers thiab cov kev sib pauv cua sov uas ua haujlwm ntawm cov kub. Hauv kev lag luam steel, nws yog siv nyob rau hauv sintering cov khoom siv, tawg ua kom tawg, txuas hniav txuas ntxiv, thiab cov cua sov pov tseg ntawm yob mills. Nws kuj tseem siv nyob rau hauv kev tsim khoom ntawm kev kho cua sov kev kho mob thiab lawv cov khoom siv. Nyob rau hauv txoj kev tsuas thiab kev lag luam MAAs, nws ua haujlwm rau ntau cov khoom vim nws lub peev xwm ua kom muaj kev mob hnyav. Piv txwv li, hauv cov CEMENT KILN, cov yeeb nkab 253M, cov yeeb nkab 253 tuaj yeem siv rau hauv cov roj tso pa, qhov twg nws yuav tsum ua kom muaj siab thev naus laus zis horrosive. Nws qhov siab - kub thiab corrosion resistance properties ua rau nws xaiv qhov zoo tshaj plaws rau cov ntawv thov uas zoo tshaj plaws.
4.Qhov kev txiav txim siab tseem ceeb thaum lub sij hawm ua cov khoom siv thiab vuam ntawm 253mA unc unralalloy ss yeeb nkab?
Thaum lub sijhawm fabrication, piv rau cov roj carbon hlau, 253ma yog qhov nyuaj thiab muaj kev nyiam ua haujlwm - hajen sai. Txhawm rau txo qhov no, kev txau txau thiab maj nrawm nrawm, sib xyaw ua ke nrog cov tshuaj txiav yeeb yaj kiab ntau heev. Txog kev kho cua sov, daws kev kho mob (anealing) yog qhov tseem ceeb. Cov yeeb nkab yuav tsum tau rhaub rau 1050 - 1150℃thiab tom qab ntawd txias sai. Nws raug nquahu kom ua cov kev kho mob tom qab 10 - 20% txias ua haujlwm kom ua tiav lub zog siab tshaj plaws hauv kev pabcuam. Thaum nws los rau vuam, tus kav hlau 253 tuaj yeem muab tshuaj siv ntau cov txheej txheem vuam. Txawm li cas los xij, kom ntseeg tau qhov siab tshaj plaws Weld Relity thiab cov khoom, tus muab tub lim hlau yuav tsum muaj cov sau zoo sib xws rau cov hlau sib txuas. Qhov no yog vim hais tias qhov tshwj xeeb muaj pes tsawg leeg ntawm 253ma cuam tshuam rau weldability, thiab siv cov hlau ua kom haum, xws li corrosion thiab siab {13} kub tsis kam.
5.How ua li 253ma tsis yog s31727 SuperSlloy SS yeeb mus rau lwm lub siab- pexs alloys lossis lwm yam hlau tsis muaj roj?
Piv rau npib tsib xee - pum alloy kav, 253ma muaj ntau tus nqi {} {}}}} kev ua haujlwm kub. Txawm hais tias tsib xee - puag alloys yuav muaj cov kev ua tau zoo dua, 253ma tuaj yeem ua tau cov kev xav tau ntawm cov nqi qis dua. Nyob rau hauv kev sib piv rau lwm cov hlau tsis muaj, 253ma sawv tawm vim nws cov creep dua thiab zoo dua oxidation tsis kam ntawm nce qhov kub. Piv txwv li, qee cov hlwv uas tsis muaj peev xwm tiv thaiv tsis tau kub siab li 1150℃yam tsis muaj cov degradation. Qhov kev sib ntxiv ntawm cov ntsiab lus xws li cerium thiab nitrogen hauv 253ma muab nws txoj kev xaiv zoo uas tsis yooj yim rau cov ntawv thov siab thiab corrosion tsis kam yog qhov tseem ceeb.
