Dab tsi yog 15crmo cov khoom siv

15CrMo steel yog pearlitic cua sov-cov yeeb nkab steel uas muaj lub zog thermal siab (δb Ntau dua lossis sib npaug ntawm 440MPa) thiab oxidation tsis kam ntawm qhov kub thiab txias, thiab kuj muaj qee yam ua rau hydrogen corrosion. Vim cov ntsiab lus siab ntawm Cr, C thiab lwm yam alloying ntsiab nyob rau hauv cov hlau, cov hlau muaj ib tug tseem ceeb nyiam rau harden thiab tsis zoo weldability.

 

Cov yam ntxwv tseem ceeb: Vim li cas nws thiaj li "siab-kub resistant"?

1. Siab -Tsub stability: Ntawm qhov kub ntawm 450℃mus rau 600 degree, lub zog thiab toughness ntawm 15CrMo steel yeeb nkab nyob ruaj khov (raws li cov ntaub ntawv soj ntsuam kev lag luam, lub zog yield tuaj yeem ncav cuag tshaj 250MPa ntawm 550℃).

2. Corrosion Resistance: Cov oxide zaj duab xis tsim los ntawm chromium tuaj yeem cais cov yeeb nkab los ntawm cov xov xwm corrosive, ua rau nws nquag siv hauv cov kav dej thauj cov pa, cov roj hnyav, thiab lwm yam xov xwm.

3. Sib npaug Mechanical Properties: Nws cov qauv seamless muab nws superior cuam tshuam thiab qaug zog tiv thaiv piv rau welded steel kav, uas ua rau lub neej ntev kev pab cuam.

 

Common Application Scenarios:

1. Fais fab kev lag luam: Boiler superheaters, reheater kav, siab - siab chav kav rau chav turbines, thiab lwm yam., ua hauj lwm raws li "tus neeg saib xyuas" ntawm siab - kub thauj mus los.

2. Petrochemical Kev lag luam: Hydrogenation reactors, tshav kub exchangers, pyrolysis rauv tubes, exhibiting stability nyob rau hauv corrosive media xws li acids thiab alkalis.

3. Machinery Manufacturing: Automotive tsav ncej tes tsho, siab hlab ntsha, combining lub zog thiab lub teeb yuag zoo.

 

Tshuaj muaj pes tsawg leeg

Cov tshuaj muaj pes tsawg leeg ntawm 15CrMo yog raws li nram no:

Cov pa roj carbon (C): 0.12% - 0.18%

· Silicon (Si): 0.17% - 0.37%

· Manganese (Mn): 0.40% - 0.70%

· Chromium (Cr): 0.80% - 1.10%

Molybdenum (Mo): 0.40% - 0.55%

· Phosphorus (P): Tsawg dua lossis sib npaug rau 0.035%

· Sulfur (S): Tsawg dua los yog sib npaug rau 0.035% Qhov feem ntawm cov khoom no endow 15CrMo nrog cov khoom zoo heev thiab ua haujlwm kub.

 

Mechanical Properties

Mechanical zog ntawm 15CrMo yog raws li nram no:

• Tensile Strength (Rm): 440 MPa - 640 MPa

• Yield zog (RP0.2): 295 MPa

• Elongation (A%): 22%

• Impact Energy Absorbed (Aky): 22 J/cm² Cov khoom no ua rau 15CrMo tswj kev ua haujlwm zoo hauv ntau yam kev siv.

 

Kev kho cua sov

Cov txheej txheem kho cua sov rau 15CrMo suav nrog:

• Quenching Kub: 900℃(cua txias)

• Tempering Kub: 650℃(cua txias) Kev kho cua sov tuaj yeem txhim kho cov khoom siv kho tshuab thiab microstructure ntawm cov khoom.

 

15crmo kub resistant steel yeeb nkab Hoobkas

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