01 Cov khoom siv rau lub qhov rooj thiab qhov rais ntsia hlau
Cov ntsia hlau ntau hauv kev ua lag luam feem ntau yog carbon hlau, stainless hlau, thiab tooj liab. Sib tham txog carbon steel vs. stainless hlau).
Carbon steel screws kuj tseem siv hlau ntsia hlau.
Nws tuaj yeem muab faib ua plaub yam khoom: qis carbon steel (feem ntau), nruab nrab carbon steel, siab carbon steel (yeem tsis nyob rau hauv kev ua lag luam) thiab alloy steel raws li qhov feem ntawm cov khoom xyaw hauv cov khoom siv raw (tsuas yog carbon cov ntsiab lus).
Stainless hlau screws yog alloy screws nrog hlau ua lub ntsiab tseem ceeb thiab "ntxiv" nrog rau lwm yam xws li chromium, titanium, thiab carbon.
Raws li cov ntsiab lus thiab cov txheej txheem, nws tau faib ua 3 hom khoom: austenite, martensite thiab ferrite. Cov series yog SUS 201, SUS 304, SUS 306, thiab lwm yam. (austenite), SUS 410, SUS 420 thiab lwm yam. (martensite), SUS 430, SUS 446, thiab lwm yam. (ferrite).
02 Vim li cas stainless hlau?
Carbon steel screws kuj feem ntau siv rau hauv qhov rooj thiab qhov rais installation vim lawv lub zog siab (vim lawv cov ntsiab lus carbon siab) thiab tus nqi loj, tab sis lawv muaj qhov tsis zoo "tuag" uas yog, lawv tsis xeb-pov thawj.
Nyob rau hauv sib piv, stainless hlau screws muaj ib tug heev nyias, muaj zog thiab ruaj khov chromium-nplua nuj oxide zaj duab xis (tiv thaiv zaj duab xis) nyob rau saum npoo ntawm cov khoom vim muaj chromium nyob rau hauv lub alloy, yog li lawv muaj zoo heev xeb kuj (Stainless hlau: hais txog. rau steel uas tsis yooj yim rau xeb, tsis yog tias nws yuav tsis xeb).
Qhov rooj thiab qhov rais tsis zoo dua cov rooj tog hauv tsev. Lawv siv los ua kev tiv thaiv façade thiab muaj kev ruaj ntseg siab. Cua thiab nag muaj kev nyuaj heev. Screws yog tus yuam sij rau kho qhov rooj thiab qhov rais. Yog tias lawv xeb, lawv txoj haujlwm yuav raug txo.
Yog li ntawd, nws raug nquahu kom xaiv cov hlau tsis muaj steel rau cov ntsia hlau siv hauv qhov rooj thiab qhov rais.
03 Yuav ua li cas xaiv cov khoom siv stainless hlau?
Stainless hlau screws siv nyob rau hauv lub qhov rooj thiab qhov rais yog yeej austenite, thiab muaj ob hom khoom: martensite:
Cov khoom siv austenitic yog tus cwj pwm los ntawm kev faib ua feem ntawm chromium ntsiab nyob rau hauv "lub cev", yog li nws muaj qhov zoo tshaj plaws xeb kuj ntawm stainless hlau cov ntaub ntawv;
Cov khoom siv Martensitic yog tus cwj pwm los ntawm cov feem tsawg ntawm chromium hauv "lub cev", tab sis cov ntsiab lus carbon siab, yog li txawm hais tias nws cov xeb kuj tsis zoo li austenite, nws muaj zog dua. Ntxiv mus, martensite tsuas yog ib qho ntawm "Peb Kwv Tij" uas tuaj yeem ua kom sov, uas tuaj yeem txhim kho nws tus nqi zog ntxiv, thiab qhov kawg ntawm lub zog muaj zog yog kaum npaug ntawm lwm yam khoom siv;
Yuav ua li cas xaiv stainless hlau ntsia hlau khoom rau lub qhov rooj thiab qhov rais:
1. Austenitic 304 stainless hlau screws yog cov khoom siv ntau tshaj plaws thiab tuaj yeem ua tau raws li qhov chaw teeb tsa feem ntau;
2. Txawm li cas los xij, yog tias nws yog lub nroog ntug dej hiav txwv, qhov kev thov rau kev tiv thaiv xeb yog siab dua, thiab nws raug nquahu kom siv 316 stainless hlau screws;
3. Austenitic stainless hlau muaj xeb kuj zoo tab sis tsis siab hardness. Yog li ntawd, thaum kho xws li steel qauv kev twb kev txuas, lub hnub chav tsev beam thiab beam, beam thiab qhov rais thav duab, thiab lwm yam., lub martensitic 410 stainless hlau ntsia hlau yuav siv sij hawm mus rau hauv tus account lub xeb kuj thiab hardness ntau haum;
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