molybdenum round pas nrig rau High-temperature sintering thiab tshav kub kho kev lag luam
Kev kho cua sov ntawm molybdenum feem ntau suav nrog cov txheej txheem uas txhim kho nws cov khoom siv xws li ductility, toughness, thiab lub zog. Cov txheej txheem kev kho cua sov molybdenum feem ntau suav nrog annealing thiab txo kev ntxhov siab:
1. Annealing: Molybdenum feem ntau yog annealed los txo nws cov hardness thiab nce nws ductility. Cov txheej txheem annealing feem ntau yog ua kom sov lub molybdenum rau qhov kub thiab txias (feem ntau nyob ib ncig ntawm 1200-1400 ° C) thiab tom qab ntawd maj mam txias nws mus rau chav tsev kub. Cov txheej txheem no pab txo cov kev ntxhov siab sab hauv thiab rov ua dua cov qauv molybdenum, txhim kho ductility thiab toughness.
2. Kev ntxhov siab: Molybdenum qhov chaw uas tau dhau los ua haujlwm txias txias lossis tshuab ua haujlwm tuaj yeem ua rau muaj kev ntxhov siab los txo qis kev ntxhov siab sab hauv thiab txhim kho qhov kev ruaj ntseg. Cov txheej txheem muaj cua sov molybdenum rau qhov kub thiab txias (feem ntau nyob ib ncig ntawm 800-1100 ° C) thiab tuav nws ntawm qhov kub ntawm lub sijhawm ua ntej maj mam txias. Kev ntxhov siab yuav pab txo qis kev cuam tshuam thiab txo qhov kev pheej hmoo ntawm kev tawg ntawm molybdenum Cheebtsam.
Nws yog tsim nyog sau cia tias cov txheej txheem kev kho cua sov tshwj xeeb rau molybdenum yuav txawv nyob ntawm seb muaj pes tsawg leeg, cov ntawv thov thiab cov khoom xav tau. Yog li ntawd, nws raug nquahu kom sab laj nrog tus kws tshaj lij cov ntaub ntawv lossis xa mus rau cov txheej txheem kev kho cua sov molybdenum kom paub meej tias kev kho mob tsim nyog rau daim ntawv thov.
Lub sintering ntawm molybdenum koom nrog cov txheej txheem ntawm compacting molybdenum hmoov thiab cua sov nws mus rau ib tug kub hauv qab no nws melting point, ua rau ib tug neeg cov hmoov sib tov ua ke. Cov txheej txheem no ua rau tsim cov qauv molybdenum nrog kev txhim kho lub zog thiab ntom.
Cov txheej txheem sintering feem ntau suav nrog cov kauj ruam hauv qab no:
1. Powder pressing: Siv cov pwm los yog tuag los nias molybdenum hmoov rau hauv cov duab uas xav tau. Cov txheej txheem compaction pab tsim cov qauv coherent rau hauv cov hmoov.
2. Cua sov: Lub compacted molybdenum hmoov yog ces rhuab nyob rau hauv ib tug tswj chaw mus rau ib tug kub ntawm lub melting point ntawm molybdenum. Qhov ntsuas kub no feem ntau yog siab txaus rau tus kheej cov hmoov nplej kom sib koom ua ke los ntawm kev sib kis, ua kom muaj cov qauv zoo.
3. Densification: Thaum lub sij hawm sintering txheej txheem, cov qauv molybdenum densifies raws li ib tug neeg particles ua ke. Qhov no ua rau muaj qhov ceev thiab lub zog ntawm sintered molybdenum qhov chaw.
Sintering feem ntau yog siv los tsim cov khoom molybdenum nrog cov duab nyuaj thiab cov kev xav tau siab ceev, xws li cov khoom siv cua sov, cov khoom siv rauv, cov nkoj sintering, thiab lwm yam. Cov txheej txheem tsim cov khoom muaj zog thiab ruaj khov molybdenum nrog kev txhim kho cov khoom tsim nyog rau cov ntawv thov kub.
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