Cov hlau tsis xaim hlau yog tam sim no feem ntau siv, siv dav, thiab cov hlau loj tshaj plaws nyob hauv khw. Feem ntau hu ua stainless hlau mesh feem ntau yog hais txog cov hlau tsis xeb hlau mesh.
Ua ntej tshaj plaws, cia peb nkag siab qhov cuam tshuam ntawm ntau lub ntsiab lus tseem ceeb hauv cov hlau tsis muaj zog ntawm kev ua tau zoo ntawm cov hlau tsis huv:
1. Chromium (Cr) yog lub hauv paus tseem ceeb uas txiav txim siab qhov corrosion tsis kam ntawm cov hlau tsis huv. Hlau xeb tau muab faib ua tshuaj xeb thiab tsis xeb tshuaj. Thaum kub siab, hlau ncaj qha cuam tshuam nrog cov pa oxygen hauv huab cua los ua oxides (xeb), uas yog tshuaj lom neeg xeb; ntawm chav sov, qhov xeb no tsis xeb tshuaj. Chromium yog ib qho yooj yim los tsim cov zaj duab xis ntom ntom ntom ntom hauv qhov nruab nrab oxidizing. Zaj yeeb yaj kiab passivation no ruaj khov thiab ua tiav, thiab khov kho ua ke rau lub hauv paus hlau, sib cais tag nrho lub hauv paus thiab nruab nrab, yog li txhim kho kev txhim kho corrosion tsis kam ntawm cov hlau. 11% yog qhov qis tshaj txwv ntawm chromium hauv cov hlau tsis huv. Cov hlau uas muaj chromium tsawg dua 11% feem ntau tsis hu ua cov hlau tsis huv.
2. Nickel (Ni) yog cov khoom siv tiv taus xeb heev thiab lub hauv paus tseem ceeb uas tsim cov hlau austenite. Tom qab npib tsib xee ntxiv rau cov hlau tsis huv, cov qauv hloov pauv ntau. Raws li cov ntsiab lus ntawm npib tsib xee hauv cov hlau tsis muaj zog nce ntxiv, austenite yuav nce ntxiv, thiab kev txhim kho corrosion, kub tsis kam tiv taus, thiab kev ua haujlwm ntawm cov hlau tsis huv yuav nce ntxiv, yog li txhim kho cov txheej txheem ua haujlwm txias ntawm cov hlau. Yog li ntawd, cov hlau tsis huv nrog cov ntsiab lus nickel siab dua yog qhov tsim nyog rau kev kos cov xaim zoo thiab cov xaim me me.
3. Molybdenum (Mo) tuaj yeem txhim kho kev txhim kho corrosion ntawm cov hlau tsis xeb. Qhov ntxiv ntawm molybdenum rau cov hlau tsis muaj peev xwm tuaj yeem ua rau lub ntsej muag ntawm cov hlau tsis huv, yog li txuas ntxiv txhim kho kev txhim kho corrosion ntawm cov hlau tsis xeb. Molybdenum tsis tuaj yeem tsim nag lossis daus hauv cov hlau tsis muaj dej kom ua rau molybdenum los nag, yog li txhim kho lub zog tensile ntawm stainless hlau.
4. Cov pa roj carbon (C) yog sawv cev los ntawm "0" hauv cov khoom siv hlau tsis huv. A "0" txhais tau tias cov ntsiab lus carbon tsawg dua lossis sib npaug rau 0.09%; "00" txhais tau tias cov ntsiab lus carbon tsawg dua lossis sib npaug rau 0.03%. Cov pa roj carbon ntau ntxiv yuav txo qis kev txhim kho corrosion ntawm cov hlau tsis huv, tab sis tuaj yeem ua rau kom tawv ntawm cov hlau tsis huv.
Muaj ntau hom qib stainless hlau, suav nrog austenite, ferrite, martensite thiab duplex stainless hlau. Vim tias austenite muaj qhov ua tau zoo tshaj plaws, tsis muaj hlau nplaum thiab muaj lub siab tawv thiab yas, nws yog siv rau xaim mesh ua. Austenitic stainless hlau yog qhov zoo tshaj plaws hlau xaim hlau. Austenitic stainless hlau muaj 302 (1Cr8Ni9), 304 (0Cr18Ni9), 304L (00Cr19Ni10), 316 (0Cr17Ni12Mo2), 316L (00Cr17Ni14Mo2), 321 (0Cr18Ni9Ti) thiab lwm hom. Kev txiav txim los ntawm cov ntsiab lus ntawm chromium (Cr), npib tsib xee (Ni), thiab molybdenum (Mo), 304 thiab 304L xaim muaj qhov ua tau zoo tag nrho thiab tiv taus xeb, thiab tam sim no yog cov xaim nrog cov hlau loj tshaj plaws ntxaij; 316 thiab 316L muaj cov npib tsib xee siab, thiab Muaj molybdenum, nws yog qhov tsim nyog tshaj plaws rau kev kos cov xov hlau zoo, thiab muaj kev tiv thaiv corrosion zoo thiab tiv taus kub. High-mesh ntom-grained mesh tsis muaj dua li nws.
Ib qho ntxiv, peb yuav tsum ceeb toom rau cov phooj ywg ntawm cov chaw tsim khoom siv hlau hlau uas xaim hlau tsis xeb muaj lub sijhawm ua haujlwm. Tom qab nws tau muab tso rau hauv chav sov rau ib lub sijhawm, kev ua kom deformation kev ntxhov siab tau txo qis, yog li cov hlau tsis xeb hlau tom qab lub sijhawm zoo dua los siv ua cov ntaub qhwv.
Vim tias cov hlau tsis muaj ntxaij muaj cov yam ntxwv ntawm cov kua qaub tsis kam, alkali tsis kam, tiv taus kub, lub zog tensile thiab puas txhuam, nws yog tshwj xeeb tshaj yog haum rau kab tshuaj ntsuam thiab lim mesh hauv qab acid thiab alkali ib puag ncig ib puag ncig. Piv txwv li, kev lag luam roj tau siv los ua cov av nkos, kev lag luam tshuaj fiber ntau tau siv los ua cov ntxaij lim dej, kev lag luam hluav taws xob tau siv los ua tshuaj ntxhua khaub ncaws, thiab cov hlau, roj hmab, aerospace, tub rog, tshuaj, zaub mov thiab lwm yam lag luam tau siv rau kev siv roj thiab kua pom thiab lwm yam kev sib cais xov xwm.
Sijhawm Tshaj Tawm: Jul-23-2021