1.4112 Stainless hlau yog dab tsi?

1.4112 stainless hlau, feem ntau hu ua 440B lossis UNS S44003, yog siab -carbon martensitic stainless hlau nyob nruab nrab ntawm 440A thiab 440C hauv 440 series. Nws muaj kev sib xyaw ua ke ntawm cov tawv tawv, zoo hnav tsis kam, thiab kev tiv thaiv corrosion tsis zoo, ua rau nws tsim nyog rau cov ntawv thov uas xav tau hardness ntau dua 440A tab sis zoo dua toughness dua 440C. Nws yog dav siv rau cutlery, bearings, valve Cheebtsam, thiab cov cuab yeej phais.

 

Qhov nruab nrab hardness martensitic qib no tau lees paub raws li ntau yam qauv thoob ntiaj teb.

Txuj	Qib sib npaug
EN (Tebchaws Europe)	1.4112
ASTM / AISI (USA)	440B, UNS S44003
JIS (Nyiv)	SUS 440B
KS (Korea)	STS 440B

Nws cov ntsiab lus carbon yog siab dua 440A tab sis qis dua 440C, ntsuas qhov ua tau zoo nrog cov tawv tawv.

Element	C	Si	Mn	P	S	Cr	Mo
Cov ntsiab lus (%)	0.75 - 0.95	Tsawg dua los yog sib npaug rau 1.0	Tsawg dua los yog sib npaug rau 1.0	Tsawg dua los yog sib npaug li 0.04	Tsawg dua lossis sib npaug li 0.03	16.0 - 18.0	0.4 - 0.8

Mechanical zog sib txawv heev nrog rau kev kho cua sov, muab zoo heev hardness muaj peev xwm.

 

Qhov xwm txheej	Yield zog (Rp0.2)	Tensile zog (Rm)	Elongation (A)	Hardness (HRC)
Annealed	~ 450 MPa	~ 740 MPa	~ 14%	~ 25 HRC
Hardened & Tempered	Ntau dua lossis sib npaug li 700 MPa	Ntau dua lossis sib npaug li 850 MPa	Ntau dua lossis sib npaug li 10%	55 - 58 HRC

 

Cov yam ntxwv tseem ceeb thiab kev siv ntawm 1.4112 / 440B

High Hardness thiab Hnav Resistance:Nws tuaj yeem kho cua sov kom ua tiav siab hardness (55-58 HRC), muab kev hnav zoo heev thiab kev tuav zoo rau kev txiav daim ntaub ntawv.

Nruab nrab Corrosion Resistance:Muaj kev tiv thaiv corrosion zoo dua li ntau cov cuab yeej steel vim nws cov ntsiab lus chromium siab, tab sis tsawg dua qib austenitic zoo li 304. Haum rau qhov chaw me me corrosive.

Sib nqus thiab Hardenable:Muaj zog sib nqus thiab teb zoo rau kev kho cua sov, nrog los ntawm - hardening peev xwm nyob rau hauv seem mus txog rau nruab nrab thickness.

Qhov zoo sib npaug ntawm cov khoom:Nyob nruab nrab ntawm 440A thiab 440C, nws muaj kev sib haum xeeb ntawm qhov tawv thiab tawv.

 

Cov ntawv thov tseem ceeb:

Cov tais diav:High - riam, hniav, txiab, thiab cov cuab yeej phais zoo uas yuav tsum tau muaj qhov sib npaug ntawm qhov tawv thiab tawv.

Bearings thiab Valve Parts:Pob bearings, kev sib tw, lub rooj zaum valve, pob, thiab cov twj tso kua mis uas hnav tsis kam yog qhov tseem ceeb.

Cov cuab yeej muaj:Gauges, ntsuas cov cuab yeej, pwm, thiab tshuab qhov yuav tsum tau hardness thiab dimension stability.

Cov cuab yeej kho hniav thiab phais:Cov cuab yeej xav tau cov npoo ntse thiab sib haum nrog cov txheej txheem kom tsis muaj menyuam.

Nozzles thiab Orifices:Cov khoom uas raug rau cov kua dej abrasive los yog cov khoom me me.

 

Dab tsi txawv 440B (1.4112) ntawm 440A thiab 440C?
Qhov sib txawv tseem ceeb yog cov ntsiab lus carbon: 440A muaj 0.60-0.75% C, 440B muaj 0.75-0.95% C, thiab 440C muaj 0.95-1.20% C. Qhov no ua rau 440B muab qhov nruab nrab hauv av-siab dua hardness thiab hnav tsis kam tshaj 440A RC (uas yog me ntsis zoo dua rau HRC) Kev kho cua sov yooj yim dua li 440C (uas tuaj yeem ncav cuag 62 HRC). 440B feem ntau xaiv thaum qhov sib npaug ntawm qhov tawv, tawv, thiab corrosion kuj xav tau yam tsis muaj lub peev xwm brittleness ntawm 440C, tshwj xeeb tshaj yog rau cov ntawv thov cuam tshuam los yog poob siab loading.

 

Dab tsi yog qhov pom zoo kho cua sov rau 440B stainless hlau?
Kev kho cua sov ib txwm muajaustenitizingntawm 1010-1065 degree, nrog preheating pom zoo ntawm 760-815℃los tiv thaiv thermal shock. Tuav ntawm qhov kub kom txaus rau lub sijhawm kom yaj cov carbide, tom qab ntawdyog 'oilkom ua tiav qhov siab tshaj plaws hardness. Quenching yuav tsum ceev tab sis tswj kom txo qis distortion. Qhov no yog ua raws litemperingntawm qhov kub thiab txias ntawm 150-370 degree, nyob ntawm qhov xav tau sib npaug ntawm hardness thiab toughness. Cov cua kub qis (150-200 degree) tawm los siab tshaj plaws hardness (57-58 HRC); kub dua (300-370 degree) nce toughness nrog ib co txo ​​hardness (54-56 HRC). Ob chav tempering feem ntau yog siv los ua kom tiav kev ntxhov siab nyem thiab qhov ruaj khov. Kev kho mob sub-zero tam sim tom qab quenching tuaj yeem ua kom tawv tawv me ntsis los ntawm kev hloov pauv cov austenite.

 

Nrhiav kev ntseeg siab ntawm 1.4112 / 440B Stainless Hlau?
GNEE Steel muab cov khoom zoo - zoo 440B (1.4112) stainless hlau hauv bar, hlau, sawb, thiab phaj daim ntawv, muaj nyob rau hauv annealed mob rau machining los yog ua ntej- hardened rau cov neeg siv khoom specifications. Peb muab cov ntaub ntawv pov thawj tag nrho (EN 10204 3.1) thiab kev txhawb nqa suav nrog kev txiav txiav, sib tsoo, thiab kev kho cua sov. Yog tias koj muaj kev xav tau, thov koj xav tiv tauj peb.