Maraging 300 Steel Thaum tshav kub kub kho

Maraging yog ib tug series ntawm martensitic aged steels nrog ib tug npib tsib xee ntsiab lus ntawm 18% thiab txhim kho kev ua tau zoo los ntawm kev ntxiv cobalt. Cov qib steel hauv cov koob no muaj cov khoom siv zoo heev, kev ua haujlwm, thiab kev kho cua sov.
Maraging 300 yog cov hlau muaj zog heev raws li cov pa roj carbon dawb (lossis micro carbon) martensite, uas tuaj yeem tsim cov dej sib xyaw ua ke los nag lossis daus thaum laus. Tsis zoo li ib txwm muaj zog steel hlau, nws tsis tas yuav tsum muaj cov pa roj carbon monoxide thiab tso siab rau kev tawg thiab nag lossis daus ntawm intermetallic tebchaw rau kev ntxiv dag zog. Qhov no muab qee yam khoom tshwj xeeb: siab zog thiab toughness, qis hardening Performance index, zoo formability, yooj yim kev kho cua sov txheej txheem, yuav luag tsis muaj deformation thaum laus, thiab zoo welding kev kawm. Yog li ntawd, martensitic aging steel tau siv dav hauv cov haujlwm uas xav tau cov yam ntxwv no.

Maraging 300 Steel Txheej Txheem:
Cov txheej txheem tseem ceeb muaj xws li smelting, kub ua, txias ua, vuam, kho cua sov, thiab kho qhov chaw.

Smelting:
Feem ntau, ob lub tshuab nqus tsev smelting txheej txheem yog siv, uas suav nrog lub tshuab nqus tsev induction rauv melting thiab lub tshuab nqus tsev vacuum remelting. Rau cov qib steel nrog lub zog qis dua 1500MPa, tsis siv lub tshuab nqus tsev los yog lub tshuab nqus tsev smelting nrog hluav taws xob slag remelting txheej txheem yuav siv tau. Txawm li cas los xij, rau qib high-strength thiab qib steel tseem ceeb, cov txheej txheem nqus ob lub tshuab nqus tsev yuav tsum tau saws. Thaum lub tshuab nqus tsev noj nws tus kheej remelting, tam sim no thiab molten pas dej ua ke yuav tsum nruj me ntsis tswj kom tsis txhob hnyav dendritic segregation ntawm cov hlau ingot.

Maraging 300 Steel Thaum tshav kub kub kho:
Cov txheej txheem kev kho cua sov yooj yim yog lwm qhov tseem ceeb ntawm martensitic aging steel. Maraging 300 yuav tsum tau kho cov kev daws teeb meem ua ntej ua haujlwm txias thiab kev laus zog tom qab ua haujlwm kub. Lub hom phiaj yog kom yaj cov dej nag ntxiv tom qab ua haujlwm kub; Dissolve lub matrix nrog cov ntsiab lus muaj zog txaus; Thiab tau txais ib qho zoo heev dislocation ceev tag nrho martensitic qauv. Cov kua dej kub yog feem ntau yog 820-840 degree , thiab lub sij hawm tov khoom yog 1 teev ib 25 ram thickness. Tom qab cov tshuaj tov khoom, nws yog cua-txias, thiab qhov txias txias tsis tshua muaj kev cuam tshuam rau cov qauv thiab cov khoom. Lub zog siab ntawm martensitic aging steel yog tau los ntawm kev kho kev laus. Kev laus kub yog feem ntau 480 degree, thiab rau qib high-strength steel, 510 degree yuav siv tau. Lub sijhawm laus yog 3-6 teev, thiab cua txias yuav tsum tau tom qab kev laus. Tom qab kev laus, ib tug loj tus naj npawb ntawm dispersed thiab ultra microscopic intermetallic compound hais precipitate ntawm lub martensitic matrix, uas ua rau ib tug ob npaug ntawm cov khoom lub zog thiab tsawg toughness poob.