303Se vs 303Cu Stainless hlau: Txhim kho dawb -Machining Variants

 

Cov tshuaj muaj pes tsawg leeg thiab lub hom phiaj tseem ceeb ntawm 303Se thiab 303Cu yog dab tsi?
Ob leeg alloys yog raws li tus qauv 303 austenitic stainless hlau (17-19% Cr, 8-10% Ni) nrog ntxiv sulfur. Qib 303Se suav nrog me me ntawm selenium (feem ntau ntau dua lossis sib npaug li 0.15%), uas ntxiv cov tshuaj sulfide suav nrog. Qib 303Cu ntxiv 1.5-3.5% tooj liab. Lub hom phiaj ntawm ob qho kev hloov kho yog txhawm rau txhim kho qhov ua tau zoo tshaj plaws ntawm 303 rau cov txiaj ntsig tshwj xeeb. Lawv tau siv dav hauv cov tshuab ntsia hlau tsis siv neeg los tsim cov khoom sib xws xws li fittings, fasteners, thiab shafts.

Selenium (Se) tshwj xeeb li cas txhim kho cov yam ntxwv machining hauv 303Se?
Selenium hloov cov duab thiab faib cov sulfide inclusions hauv cov hlau. Qhov no ua rau luv luv, nkig ntau dua chips uas rhuav tshem kom huv si, txo qhov kev pheej hmoo ntawm cov chips ntev, stringy tangling ncig cov cuab yeej (noog-zes). Nws kuj tseem tso cai rau kev txiav nrawm dua thiab txau, ua kom lub ntsej muag zoo dua, thiab tuaj yeem txuas lub neej ntawm cov cuab yeej piv rau tus qauv 303. Qhov no ua rau 303Se zoo tagnrho rau kev ua tiav qhov chaw zoo yog qhov tseem ceeb.

Dab tsi tshwj xeeb kom zoo dua tooj liab (Cu) muab nyob rau hauv 303Cu thaum lub sij hawm machining?
Tooj liab ua raws li cov roj nplua nyeem sab hauv ntawm nti - cuab yeej interface. Qhov no txo ​​cov kev sib txhuam, txiav quab yuam, thiab tsim hluav taws xob thaum lub sij hawm machining. Cov txiaj ntsig tseem ceeb yog txuas ntxiv lub neej ntawm cov cuab yeej thiab muaj peev xwm tswj tau qhov kev ua haujlwm siab dua tsis tu ncua. Cov chips los ntawm 303Cu kuj feem ntau luv luv thiab yooj yim khiav tawm. Cov qib no muaj txiaj ntsig tshwj xeeb hauv qhov siab - ntim ntau lawm ib puag ncig uas txo cov cuab yeej hloov pauv sijhawm yog qhov tseem ceeb ntawm kev lag luam.

Puas muaj qhov sib txawv tseem ceeb hauv lawv cov kev tiv thaiv corrosion lossis lwm yam khoom?
Lawv cov corrosion kuj zoo ib yam li tus qauv 303, txhais tau tias nws haum rau ib puag ncig me me tab sis txo qis piv rau 304 vim yog cov ntsiab lus sulfur. Ob qib tsis pom zoo rau kev vuam, vim cov sulfur thiab selenium / tooj liab ntxiv ua rau muaj kev pheej hmoo ntawm kub tawg. Mechanically, ob qho tib si muaj me ntsis ductility thiab toughness tshaj 304. Qhov kev xaiv ntawm lawv tsis feem ntau pob khawm ntawm kev ua haujlwm corrosion tab sis ntawm cov hom phiaj kev ua kom zoo dua qub.

Raws li tus neeg yuav khoom, kuv yuav txiav txim siab li cas ntawm kev qhia 303Se thiab 303Cu rau ib qhov project?
Koj qhov kev txiav txim siab yuav tsum tau tsav los ntawm koj qhov tseem ceeb ntawm kev tsim khoom. Yog tias koj lub hom phiaj tseem ceeb yog ua kom tiav qhov zoo tshaj plaws saum npoo tiav thiab huv si nti breakability hauv precision qhov chaw, xaiv 303Se. Yog tias koj lub hom phiaj tseem ceeb yog ua kom lub neej zoo tshaj plaws thiab kev ua haujlwm ceev hauv qhov siab - ntim ntau lawm khiav kom txo tau tus nqi tag nrho ib feem, ces 303Cu yog qhov kev xaiv zoo dua. Tham nrog koj tus kws kho tshuab lossis tus neeg muag khoom, vim lawv tuaj yeem pom zoo raws li lawv qhov kev paub nrog koj qhov tshwj xeeb geometry thiab khoom siv.