Kub ua haujlwm:
Maraging steel muaj zoo thermoplasticity ntawm qhov kub thiab txias, thiab nws cov kub ua hauj lwm yog roughly tib yam li ntawm 1Crl8Ni9Ti. Rau cov hlau nrog cov ntsiab lus siab ntawm titanium thiab molybdenum, microsegregation ntawm cov ntsiab lus no yooj yim tshwm sim thaum ingot solidification, thiab anisotropic banded microstructure yog tsim tom qab kub ua. Qhov kev ntsuas zoo los txo lossis tshem tawm cov microsegregation yog xaiv qhov tsim nyog ingot loj thiab ua kom muaj kev kub siab txaus homogenization thaum ua haujlwm kub. Txhawm rau tiv thaiv qhov kub thiab txias qeeb qeeb los ntawm nag lossis daus ntawm Ti (C, N) thiab lwm cov tebchaw raws li thaj tsam ntawm austenite, qhov txias txias los yog nyob ntawm qhov chaw ua haujlwm nyob rau hauv qhov kub ntawm 1100 ~ 750C yuav tsum zam kom tsis txhob muaj qhov kub thiab txias. deb li sai tau tom qab ua haujlwm kub. Txhawm rau kom tau txais cov nplej zoo thiab cov khoom siv kho tshuab zoo dua, qhov kawg forging yuav tsum ua kom tiav ntawm qhov kub thiab txias (950 ~ 850C) nrog ntau qhov deformation (ntau tshaj 25 feem pua ).
Ua haujlwm txias:
Kev ua haujlwm txias yog qhov zoo heev hauv lub xeev cov tshuaj. Kev kos duab, txias dov, dabtsi yog khoov, sib sib zog nqus kos duab thiab lwm yam kev ua tau yooj yim ua. Kev ua haujlwm hardening Performance index ntawm hlau yog {{0}}.02 ~ 0.03, uas yog ib qho kev txiav txim siab qis dua li cov hlau zoo tib yam. Yog li ntawd, tsis muaj softening annealing yog yuav tsum tau thaum lub sij hawm ua cov txheej txheem ua kom txias ua nrog ntau tshaj 90 feem pua deformation.
Vuam:
Zoo weldability yog ib qho zoo ntawm maraging steel. Yuav luag tag nrho cov txheej txheem vuam tuaj yeem siv tau. Qhov sib xyaw ntawm cov hlau vuam yog qhov tseem ceeb tib yam li cov hlau welded. Tsis tas yuav tsum tau preheat ua ntej vuam, thiab tsis muaj qhov tawg yuav tshwm sim yam tsis muaj kev kho mob tom qab vuam. Tom qab kev laus ncaj qha, qhov sib koom ua ke tuaj yeem tshaj 90 feem pua.
