1.4086 Stainless hlau yog dab tsi?

1.4086 stainless hlau, feem ntau hu ua 431 los yog UNS S43100, yog ib qho martensitic stainless hlau uas sib txuas lub zog siab, zoo corrosion kuj, thiab zoo heev toughness. Nws cov ntsiab lus chromium siab dua piv rau lwm cov qib martensitic muab kev tiv thaiv corrosion zoo dua, thaum ntxiv cov npib tsib xee txhim kho toughness thiab hardenability. Qhov kev sib xyaw ua ke no ua rau nws tsim nyog rau siab - lub zog ntawm cov khoom siv, fasteners, thiab qhov chaw raug rau cov cheeb tsam me me uas yuav tsum muaj kev ua haujlwm zoo thiab corrosion kuj.

 

Qhov siab - qib martensitic no yog tus qauv raws li cov txheej txheem thoob ntiaj teb tseem ceeb.

Txuj	Qib sib npaug
EN (Tebchaws Europe)	1.4086
ASTM / AISI (USA)	431, UA S43100
JIS (Nyiv)	SUS 431
KS (Korea)	STS431
Lub Npe	431

Nws muaj xws li chromium rau corrosion kuj thiab npib tsib xee rau toughness thiab txhim kho hardenability.

Lub ntsiab	C	Si	Mn	P	S	Cr	Ni
Cov ntsiab lus (%)	0.12 - 0.20	Tsawg dua los yog sib npaug rau 1.0	Tsawg dua los yog sib npaug rau 1.0	Tsawg dua lossis sib npaug li 0.04	Tsawg dua los yog sib npaug li 0.03	15.0 - 17.0	1.5 - 2.5

Nws tuaj yeem ua tiav qhov sib npaug zoo ntawm lub zog thiab toughness los ntawm kev kho cua sov.

Qhov xwm txheej	Yield zog (Rp0.2)	Tensile zog (Rm)	Elongation (A)	Hardness (HRC)
Annealed	~ 550 MPa	~ 740 MPa	~ 20%	~ 25 HRC
Hardened & Tempered	Ntau dua lossis sib npaug li 690 MPa	Ntau dua lossis sib npaug rau 860 MPa	Ntau dua lossis sib npaug li 15%	30 - 40 HRC

 

Cov yam ntxwv tseem ceeb thiab kev siv ntawm 1.4086 / 431

Siab zog thiab zoo toughness:Muab kev sib xyaw ua ke zoo ntawm lub zog thiab kev cuam tshuam, tshwj xeeb tshaj yog nyob rau hauv cov tawv tawv thiab tempered, ua rau nws haum rau dynamic loading daim ntaub ntawv.

Zoo dua Corrosion Resistance:Cov ntsiab lus chromium siab dua (15-17%) muab kev tiv thaiv corrosion zoo dua li ntau lwm qib martensitic xws li 410 lossis 420, nce mus txog qee cov qib austenitic hauv qhov chaw me me.

Sib nqus thiab Hardenable:Muaj zog sib nqus thiab teb zoo rau kev kho cua sov rau hardening, nrog zoo los ntawm - muaj peev xwm hardening.

Zoo Fatigue Strength:Exhibits zoo heev qaug zog kuj, tseem ceeb rau rotating thiab reciprocating Cheebtsam.

 

Cov ntawv thov tseem ceeb:

Aerospace thiab Defense:Siab - lub zog fasteners, tsaws iav Cheebtsam, structural parts, thiab actuator Cheebtsam.

Kev lag luam roj thiab roj:Valve stems, twj tso kua mis shafts, downhole cov cuab yeej, thiab cov cuab yeej zoo lub taub hau xav tau lub zog thiab nruab nrab corrosion kuj.

Cov khoom siv Marine:Shafts, kiv cua fittings, rudder stocks, thiab kho vajtse rau marine ib puag ncig.

General Engineering:Siab -cov khoom muaj kev ntxhov siab xws li iav, bolts, studs, rollers, thiab shafts.

Pulp thiab ntawv:Cheebtsam hauv ntawv machinery xav tau lub zog thiab corrosion kuj.

Kev ua tshuaj lom neeg:Fasteners thiab valve Cheebtsam hauv kev pabcuam me me corrosive.

 

431 (1.4086) piv rau 420 (1.4021) stainless hlau li cas?
Qib 431 muaj ntau cov chromium (15-17% vs. 12-14}%) thiab suav nrog npib tsib xee (1.5-2.5%), muab nws zoo dua corrosion kuj thiab toughness dua 420. Thaum 420 feem ntau yog siv rau cutlery thiab hnav- resistant qhov chaw qhov chaw siab hardness 4 yog qhov tseem ceeb ntawm daim ntaub ntawv 1. qhov twg yuav tsum muaj kev sib xyaw ua ke ntawm lub zog, toughness, thiab nruab nrab corrosion kuj yuav tsum tau . 431 feem ntau ua tiav qhov siab tshaj plaws hardness (40 HRC vs . 55 HRC) tab sis muaj kev cuam tshuam zoo dua thiab kev ua haujlwm corrosion, ua rau nws tsim nyog rau cov khoom siv thauj khoom hauv qhov chaw corrosive.

 

Dab tsi yog cov lus qhia txog kev kho cua sov rau 431 stainless hlau?
Rau cov khoom zoo, 431 feem ntau yogtawvlos ntawm austenitizing ntawm 980-1050℃ua raws li cov roj quenching. Preheating ntawm 760-815℃raug pom zoo rau cov ntu nyuaj kom txo qis kev cuam tshuam. Nws yog ceskub siabntawm qhov kub ntawm 540-660℃kom ua tiav qhov xav tau sib npaug ntawm lub zog thiab toughness. Kev kub siab kub ua kom muaj zog thiab ductility thaum txo hardness thiab lub zog. Kev saib xyuas yuav tsum tau ua kom tsis txhob tempering nyob rau hauv thaj tsam ntawm 370-540℃los tiv thaiv tempered martensite embrittlement. Rau cov ntawv thov uas xav tau lub zog siab tshaj plaws nrog kev sib zog sib zog, kub siab ntawm 540-600 degree; rau qhov zoo tshaj plaws toughness nrog zoo zog, temper ntawm 620-660 degree. Ob chav tempering feem ntau muaj txiaj ntsig zoo rau kev ntxhov siab thiab kev ruaj ntseg.

 

Dab tsi yog qhov kev txiav txim siab vuam rau 431?
431 tuaj yeem welded siv ntau txoj kev, tab sis yuav tsum tau saib xyuas vim nws cov qauv martensitic. Cov ntsiab lus tseem ceeb suav nrog:

Preheating (200-300 degree) yog pom zoo kom tsis txhob tawg

Tsawg hydrogen vuam txheej txheem (TIG, MIG) nyiam dua

Austenitic muab tub lim hlau (309L, 310L) raug pom zoo rau kev ua kom zoo dua qub

Tom qab-weld kev kho cua sov feem ntau yuav tsum tau los kho cov khoom

Rau cov kev siv tseem ceeb, vuam yuav tsum tau ua nyob rau hauv lub annealed mob

Cov ntu tuab yuav tsum tau ua tib zoo saib xyuas cov txheej txheem tsim nyog

 

Nrhiav kev ntseeg siab ntawm 1.4086 / 431 Stainless Hlau?
GNEE Steel muab cov khoom siv siab -lub zog 431 (1.4086) stainless hlau nyob rau hauv bar, phaj, forging, thiab hlau cov ntaub ntawv, muaj nyob rau hauv annealed los yog tshav kub-kho tej yam kev mob kom tau raws li qhov xav tau ntawm cov neeg kho tshuab. Peb muab cov ntaub ntawv pov thawj tag nrho (EN 10204 3.1) thiab kev txhawb nqa suav nrog kev txiav, machining, thiab kev kho cua sov. Yog tias koj muaj kev xav tau, thov koj xav tiv tauj peb.