420 ss (stainless hlau) thermal txau hlau yog ib cov khoom siv zoo tsim rau cov ntawv thov arc. Paub txog nws cov zoo heev corrosion tsis kam, siab hardness, thiab kev coj ua tau zoo, 420 ss yog martensitic tiv thaiv tsis muaj zog. Cov xaim no feem ntau siv hauv kev lag luam xws li petrochemical xws li petrochemical, power tiam, thiab cov tubrog nkoj, thiab lub neej los txhim kho lub durability thiab lifespan ntawm qhov tseem ceeb thiab kav dej. Lub 420 ss cov tshuaj khib kub yog qhov zoo tagnrho rau cov ntawv thov uas xav tau ib qho nyuaj, hnav-tiv taus corrosion tsis kam.
Kev npaj zoo chaw yog qhov tseem ceeb heev los ua tiav cov txiaj ntsig zoo tshaj plaws nrog 420 ss thermal txau hlau. Qhov saum npoo yuav tsum tau coated yuav tsum tau ceev heev kom tshem tawm cov kuab paug xws li roj, roj, thiab oxides. Grit blasting nrog txhuas oxide lossis silicon carbide yog pom zoo kom ua tiav qhov chaw ntawm 50-75 microns. Ib lub huv thiab roughened nto txhim kho cov nplaum ntawm cov txheej txau cov txheej txheej, ua rau kev txhim kho kev ua tau zoo thiab thiav.
Lub ntsiab | Muaj pes tsawg leeg (%) |
---|---|
Carbon (c) | 0.15 - 0.40 |
Chromium (cr) | 12.0 - 14.0 |
Manganese (mn) | 1.0 max |
Silicon (si) | 1.0 max |
Phosphorus (p) | 0.04 max |
Sulphur (s) | 0.03 max |
Hlau (FE) | Seem |
Ntiag tug | Cov nqi raug |
---|---|
Ceev | 7.75 g / cm³ |
Melting point | 1450 ° C |
Kev nyuaj | 50-58 HRC |
Bond lub zog | 55 MPa (8000 psi) |
Oxidation tsis kam | Zoo |
Thermal conductivity | 24 w / min k |
Daim tuab Thickness ntau | 0.1 - 2.0 hli |
Porosity | <3% |
Hnav Tsis kam | Siab |
420 ss txau hlau yog ib qho kev daws teeb meem zoo rau kev txhim kho cov khoom saum npoo ntawm cov khoom siv thiab mob corrosion. Nws lub siab tawv thiab hnav tsis kam ua nws haum rau cov ntawv thov uas xav tau cov txheej txheem ruaj khov thiab ntev ntev. Los ntawm kev siv 420 ss thermal txau hlau, kev lag luam tuaj yeem txhim kho kev pabcuam lub neej thiab kev ntseeg tau ntawm lawv cov cuab yeej thiab cov khoom siv.