Vuam hniav kev nkag siab
Lub alloy yog sintered los ntawm ultrafine hmoov nyob rau hauv lub siab ntawm ib tug kub ntawm 1200 degree, thiab cov alloy welding yog biased rau tsawg kub vuam. Lub hom phiaj yog los tiv thaiv nws cov qauv metallographic los ntawm kev puas tsuaj thaum vuam, qhov vuam kub yuav tsum tsis txhob siab tshaj 750 degree, thiab qhov kub thiab txias tsis sib xws, thiab nws yog qhov zoo tshaj rau vuam nrog cov hniav. Thaum vuam cov hniav, ua tib zoo saib seb puas muaj carbide nyob rau hauv cov hlau, ua kom cov hlau huv si thiab tsis muaj plua plav lossis qhov kub thiab txias nyob rau hauv lub rooj cob qhia, cov hniav tuav tsis pub muaj cov xeb los yog oxides, cov flux yuav tsum tsis txhob dhau. tuab los yog nyias dhau, thiab nws yuav tsum tau muab kho rau hauv ib qho muab tshuaj txhuam, thiab cov kua nplaum tsis tuaj yeem siv tau. Ua tib zoo mloog rau nag lossis daus, sib tov cov flux thaum rov siv dua, nws yog qhov zoo tshaj kom poob rau ntawm cov hlau, tsis txhob muab tshuaj txhuam sab nraum cov hauv paus hniav ntawm cov hniav substrate. Kev siv cov nyiaj hlau tsis tuaj yeem ua raws cov ntsiab lus nyiaj siab dhau, feem ntau ntawm 45% tuaj yeem ua tau. Cov ntsiab lus hlau tseem ceeb ntawm cov nyiaj vuam hlau yog nyiaj, tooj liab, npib tsib xee, nyiaj kub kub, npib tsib xee thiab zinc txhim khu fluidity, tooj liab nce lub zog, tsuav yog ntxiv cov manganese, indium thiab selenium, qhov adhesion muaj zog dua. Manganese muaj qhov pores, indium thiab selenium ntsiab yog kim dhau, qhov dav dav vuam lub zog ntawm vuam hlau yog 5-16KG ib square centimeter, thiab lub zog ntawm txhua tus hniav nyob ntawm qhov loj ntawm qhov chaw vuam, thiab lub zog. ntawm txhua tus hniav tsis tuaj yeem tsawg dua 50KG, thiab hom kev lag luam yog ntau tshaj 100KG. Tom qab vuam, cov hniav saws tau muab tso rau hauv qhov cub 100 degree tam sim ntawd rau tempering, uas txo cov kev ntxhov siab los ntawm cov hniav vuam thiab ua kom cov qauv sab hauv ntawm cov hlau, thiab txhim kho cov kav ntev thiab hnav tsis kam.