Lub Elongation ntawm Monel Alloys - Kev Paub

Dab tsi yog qhov elongation thiab txo ntawm Cheeb Tsam Indicators ntawm Monel Alloys, thiab Dab tsi yog Qhov Kev Txwv Siab rau Kev Ua Haujlwm Yas?

1. Elongation thiab txo qhov ntsuas ntawm cheeb tsam

Monel alloys yog npib tsib xee- tooj liab alloys nrog zoo heev plasticity, thiab lawv elongation thiab txo ntawm cheeb tsam sib txawv los ntawmqib alloy, Kev kho cua sov hauv xeev, thiabcov khoom tsim(piv txwv li, phaj, bar, raj). Cov nram qab no yog cov cuab yeej cuab tam cov cuab yeej ntsuas ntawm ob qib feem ntau:

Alloy Qib	Thaum tshav kub kub kho State	Elongation (δ₅, Ntau dua lossis sib npaug)	Txo ntawm Cheeb Tsam (ψ, Ntau dua lossis sib npaug)	Test Standard
Monel 400	Annealed (650-750 degree, huab cua-txias)	30%	45%	ASTM B127/B164
Monel 400	Txias- ua haujlwm (10–30% deformation)	8–15%	20–30%	ASTM B127/B164
Monel K500	Kev daws annealed (1010-1065 degree, quenched)	25%	35%	ASTM B 564 Cov khoom siv
Monel K500	Cov dej nag hnyav (480-510 degree, laus)	18%	25%	ASTM B 564 Cov khoom siv

Elongation: Reflects cov yas deformation muaj peev xwm ntawm cov hlau ua ntej tawg. Annealed Monel 400 muaj qhov siab tshaj plaws elongation, ua rau nws haum rau kev sib sib zog nqus nqus, khoov, thiab lwm yam txheej txheem. Txias- ua hauj lwm los yog nag lossis daus- cov qib hardened muaj qis elongation vim muaj zog thiab hardness.

Kev txo qis ntawm cheeb tsam: Qhov taw qhia tseem ceeb ntawm cov hlau ductility, tshwj xeeb tshaj yog rau kev ntsuas kev ua haujlwm ntawm forged thiab kos cov khoom. Kev txo qis ntawm thaj chaw muaj txiaj ntsig ntau dua txhais tau tias cov hlau tsis tshua muaj kev tawg thaum lub sij hawm yas deformation.

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2. Kev txwv siab rau kev ua haujlwm yas

Kev txwv sab saud ntawm cov yas ua haujlwm rau Monel alloys yog txiav txim los ntawmalloy qib, kev kho cua sov lub xeev, thiab cov txheej txheem ua, thiab feem ntau yog txwv los ntawm ob yam hauv qab no:

Deformation kub txwv

Txias Ua Hauj Lwm Siab Limit: Rau annealed Monel 400, qhov siab tshaj plaws txias deformation tus nqi yog40–50%(piv txwv li, txias dov, kos duab txias). Ua kom dhau qhov kev txwv no yuav ua rau kev ua haujlwm hnyav, ua rau muaj zog ntxiv, txo cov yas, thiab txawm tias tawg ntawm lub workpiece. Txias deformation tus nqi rau txias- qib ua hauj lwm los yog hardened qib qis dua (feem ntau Tsawg dua los yog sib npaug li 20%).

Kub Ua Haujlwm Siab Tshaj: Qhov zoo tshaj plaws kub ua haujlwm kub ntau rau Monel alloys yog900-1100 degree. Lub siab kub txwv yog1150 degree; kub saum toj no yuav ua rau grain coarsening, oxidation, thiab txawm ib nrab melting ntawm cov hlau, uas ua rau txo mechanical zog ntawm cov khoom tiav. Qhov tsawg kawg nkaus kub ua haujlwm kub yog850 degree; kub hauv qab no yuav ua rau siab deformation kuj thiab yooj yim tawg.

Deformation txheej txheem txwv

Deep Drawing & Stamping: Annealed Monel 400 tuaj yeem ua tiav qhov siab tshaj plaws ntawm kev kos duab2.0–2.2:1(qhov sib piv ntawm txoj kab uas hla mus rau qhov kawg ntawm txoj kab uas hla) tsis muaj qhov nruab nrab annealing. Rau qhov nyuaj-zoo li tus, qhov nruab nrab annealing yuav tsum tau tom qab 20-30% deformation los kho cov yas.

Forging & Extrusion: Thaum lub sij hawm kub forging, qhov siab tshaj plaws ib zaug -pass deformation tus nqi yog30–40%. Ntau qhov kev hla ntawm forging raug tso cai, tab sis qhov kub ntawm qhov kev hla yuav tsum tau khaws cia siab tshaj 850℃kom tsis txhob tawg.

Khoov: Qhov tsawg kawg nkaus dabtsi yog khoov vojvoog rau annealed Monel 400 daim hlau (thickness Tsawg dua los yog sib npaug li 5 hli) yog1 phaj thickness; rau cov phaj tuab lossis txias- qib ua haujlwm, qhov tsawg kawg nkaus khoov vojvoog yuav tsum tau nce mus rau2-3 phaj thicknesstiv thaiv ntug cracking.