Mo Molybdenum hauv cov hlau tuaj yeem txhim kho hardenability thiab thermal zog, tiv thaiv temper brittleness, nce remanence thiab coercive quab yuam, thiab txhim kho corrosion kuj nyob rau hauv tej yam xov xwm.
Nyob rau hauv quenched thiab tempered steel, molybdenum tuaj yeem ua rau qhov chaw nrog cov ntu loj loj sib sib zog nqus thiab ua kom huv si, txhim kho tempering tsis kam lossis tempering ruaj khov ntawm cov hlau, kom cov khoom tuaj yeem tempered ntawm qhov kub siab dua, yog li tshem tawm tau zoo dua (lossis txo) residual stress thiab txhim kho plasticity.
Hauv carburized steel, ntxiv rau cov haujlwm saum toj no, molybdenum kuj tseem tuaj yeem txo cov kev xav ntawm carbides los tsim ib qho kev sib txuas txuas ntxiv ntawm cov kab lis kev cai hauv cov txheej carburized, txo cov seem austenite hauv txheej carburized, thiab kuj nce txheej txheej. . hnav tsis kam.
Nyob rau hauv forging tuag steel, molybdenum kuj muaj peev xwm tswj tau ib tug kuj ruaj khov hardness ntawm cov hlau thiab ua rau kom tsis kam mus deformation. Kev tiv thaiv kom tawg thiab hnav.
Nyob rau hauv stainless acid-resistant steel, molybdenum tuaj yeem txhim kho corrosion kuj rau cov organic acids (xws li formic acid, acetic acid, oxalic acid, thiab lwm yam) nrog rau hydrogen peroxide, sulfuric acid, sulfurous acid, sulfates, acid dyes, bleaching. hmoov, thiab lwm yam tshwj xeeb, qhov sib ntxiv ntawm molybdenum tiv thaiv kev nyiam ntawm pitting corrosion tshwm sim los ntawm muaj cov chloride ions.
W12Cr4V4Mo high-speed steel uas muaj li ntawm 1% molybdenum muaj hnav tsis kam, tempering hardness thiab liab hardness.
tungsten Ntxiv rau kev tsim cov carbides hauv cov hlau, tungsten ib nrab yaj mus rau hauv cov hlau los tsim cov kuab tshuaj. Nws cov nyhuv zoo ib yam li cov molybdenum. Muab xam los ntawm pawg pawg, cov txiaj ntsig dav dav tsis yog qhov tseem ceeb li molybdenum. Kev siv lub ntsiab ntawm tungsten hauv cov hlau yog txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhav nws, nws yuav tsum tau siv cov tungsten tseem ceeb, nws yog qhov tsim nyog yuav tsum tau siv cov tungsten tseem ceeb hauv kev siv cov khoom tseem ceeb rau kev ua kom muaj zog ntxiv. Yog li ntawd, nws yog tsuas yog siv nyob rau hauv cov cuab yeej steel, xws li high-speed steel, kub forging tuag steel, thiab lwm yam.
Tungsten cov ntaub ntawv refractory carbides nyob rau hauv high-zoo caij nplooj ntoos hlav hlau. Thaum tempered ntawm qhov kub siab dua, nws tuaj yeem txo cov txheej txheem sib sau ua ke ntawm carbides thiab tuav lub zog siab kub. Tungsten kuj tseem tuaj yeem txo cov hlau tsis kam rau overheating, nce hardenability thiab nce hardness. 65SiMnWA lub caij nplooj ntoos hlav steel muaj qhov nyuaj siab heev tom qab cua txias tom qab kub dov. Lub caij nplooj ntoos hlav steel nrog 50mm2 hla ntu tuaj yeem quenched hauv cov roj thiab tuaj yeem siv los ua lub caij nplooj ntoos hlav tseem ceeb uas tuaj yeem nqa cov khoom loj, tiv taus cua sov (tsis ntau tshaj 350 degree), thiab cuam tshuam. 30W4Cr2VA yog lub zog muaj zog thiab kub-resistant high-zoo caij nplooj ntoos hlav steel nrog loj hardenability. Tom qab quenching ntawm 1050 ~ 1100 degree thiab tempering ntawm 550 ~ 650 degree, lub zog tensile ncav cuag 1470 ~ 1666MPa. Nws yog tsuas yog siv los tsim cov springs siv nyob rau hauv siab kub (tsis ntau tshaj 500 degree) tej yam kev mob.
Vim tias qhov sib ntxiv ntawm tungsten tuaj yeem txhim kho qhov hnav tsis kam thiab ua haujlwm ntawm cov hlau, tungsten yog lub ntsiab ntawm cov cuab yeej hlau alloy.
