Dab tsi yog qhov txawv ntawm Stainless Hlau 304 thiab Stainless Hlau 316?

Dab tsi yog qhov txawv ntawm stainless hlau 304 thiab stainless hlau 316

1. Tshuaj muaj pes tsawg leeg:
Cov tshuaj muaj pes tsawg leeg ntawm stainless hlau 304 suav nrog 18-20% chromium (Cr) thiab 8-10.5% npib tsib xee (Ni), nrog rau me me ntawm carbon (C), (Mn) thiab lwm yam. Ntxiv rau 18-20% chromium thiab 8-10.5% npib tsib xee, stainless hlau 316 kuj ntxiv 2-3% platinum (Mo). Qhov sib ntxiv ntawm titanium tuaj yeem txhim kho corrosion kuj ntawm stainless hlau, tshwj xeeb tshaj yog nyob rau hauv kub kub thiab corrosive xov xwm.
 

2. Cov qauv txiav txim siab cov khoom. Vim qhov sib txawv ntawm cov khoom sib txawv, cov khoom ntawm 304 stainless hlau thiab 316 stainless hlau yog txawv:
Los ntawm kev sib piv ntawm daim duab 1 thiab daim duab 2, nws pom tau hais tias qhov sib txawv ntawm nws cov muaj pes tsawg leeg yog vim qhov sib txawv ntawm cov pa roj carbon, chromium, npib tsib xee, thiab cov ntsiab lus nyiaj. Cov ntsiab lus sib txawv ntawm cov ntsiab lus no ua rau cov khoom sib txawv, xws li:
Chromium (Cr): Nce hardness, zog, toughness thiab hnav tsis kam; Txhim kho oxidation kuj thiab corrosion kuj, txo cov plasticity thiab toughness Nickel (Ni): Txhim kho lub zog, tuav zoo toughness thiab plasticity, thiab txhim kho corrosion kuj, xeb-pov thawj thiab kub-resistant ntawm kub kub. (Mo): Txhim kho lub zog, txhim kho kev cuam tshuam thiab kev tiv thaiv tshav kub, txhim kho hardenability thiab thermal zog zog, tswj kom txaus creep tsis kam ntawm qhov kub thiab txias; inhibit brittleness tshwm sim los ntawm quenching.

Ob leeg 304 series thiab 316 series stainless hlau yog austenitic stainless hlau, uas muaj cov yam ntxwv ntawm kev ua tau zoo, corrosion kuj thiab xeb kuj. Piv nrog rau ob, 316 muaj zog corrosion kuj thiab kub tsis kam tshaj 304. Lub ntsiab yog vim li cas tsuas yog qee qhov sib txawv ntawm lawv cov tshuaj muaj pes tsawg leeg.
(1) Lub 316 series ntxiv cov (Mo). Ntxiv nrog rau kev txhim kho lub zog thiab kub tsis kam, (Mo) tuaj yeem txhim kho corrosion kuj nyob rau hauv cov huab cua, zoo heev txhim kho corrosion kuj ntawm 316 series stainless hlau.
(2) Lub 316 series kuj muaj 2% -3% ntau npib tsib xee (Ni), uas txhim kho nws cov durability, txhua yam khoom, corrosion kuj, thiab oxidation kuj.

3. Cov khoom sib txawv ua rau 304 stainless hlau thiab 316 stainless hlau muaj kev siv sib txawv.
Nyob rau hauv ib puag ncig sab hauv tsev thiab sab nraum zoov ib puag ncig, xaiv 304 stainless hlau fasteners tuaj yeem tiv taus ntuj corrosion thiab lwm yam teeb meem. Txawm li cas los xij, yog tias nws yog cov khoom siv dej hiav txwv, tshuaj lom neeg, roj thiab lwm yam khoom siv, kev lag luam ib puag ncig, cov chaw nyob hauv ntug hiav txwv dej, thiab lwm yam, nws yuav tsum xaiv 316 lossis 316L stainless hlau fasteners nrog kev ua tau zoo dua.