Tungsten hnyav alloys kuj tau dhau los ua high-density tungsten alloys. Vim lawv cov khoom zoo tshaj plaws ntawm lub cev thiab tshuaj lom neeg, lawv tau dhau los ua cov khoom siv tseem ceeb, cov khoom tawg thiab cov ntaub ntawv tiv thaiv hluav taws xob, thiab tau siv dav hauv ntau yam xws li teeb pom kev zoo, aerospace, automotive kev lag luam, nuclear kev lag luam, petrochemical, iav ceramics thiab metallurgical manufacturing. Kev tswj nruj nruj ntawm cov txheej txheem tsim khoom ntawm tungsten hnyav alloys muaj qhov cuam tshuam tseem ceeb ntawm lub zog, brittleness, cuam tshuam toughness, hardness thiab corrosion kuj ntawm cov khoom. Nws cov txheej txheem tsim khoom feem ntau suav nrog cov kauj ruam hauv qab no:
1. Cov khoom sib xyaw
Raws li cov kev cai muaj pes tsawg leeg ntawm qhov kawg npaj high-density tungsten alloy, ntau yam pre-npaj hlau hmoov yuav tsum tau tov yog muab tso rau hauv lub inclined tov khoom tib lub sij hawm thiab tag nrho thiab uniformly stirred rau rau mus rau yim teev kom tau txais tag nrho tov. hmoov.
2. Txias isostatic nias
Siv cov txheej txheem txias isostatic nias, cov hmoov sib tov tau txais tom qab kev sib xyaw ua ke yog raug rau qhov txias isostatic nias, lub siab feem ntau yog 120-170Mpa, thiab lub sij hawm yog 1-6min (nyiam dua 2min).
3. Kub kub sintering
Lub cev nias yog muab tso rau hauv qhov kub kub sintering rauv (sintered sintering rauv), thiab sintered nyob rau hauv kev tiv thaiv ntawm ammonia decomposition gas los yog hydrogen kom tau ib tug tungsten alloy sintered lub cev nrog ib tug muaj pes tsawg leeg. Qhov kub ntawm sintering feem ntau yog 1400-1600 degree C, thiab lub sintering kub yog khaws cia Lub sij hawm yog 30-90min.
4. Quenching
Cov npaj tungsten alloy sintered billet yog muab tso rau hauv qhov kub kub quenching rauv rau kev kho quenching tas li. Thawj theem quenching kub yog 1100-1500 degree, lub sij hawm tuav yog 10-50min, qhov thib ob-theem quenching kub yog 25-80 degree, thiab lub sij hawm tuav yog 25-80 degree . 30- 40min.
5. Nqus Annealing
Muab lub hardened tungsten alloy sintered dawb paug rau hauv lub tshuab nqus tsev kub kub rau lub tshuab nqus tsev annealing. Lub tshuab nqus tsev kub ntawm lub tshuab nqus tsev kub kub tsis qis dua ICT1Pa, qhov kub thiab txias yog 1100-1300 degree, thiab lub sijhawm annealing yog 1-4h (lub sijhawm zoo tshaj plaws yog 2h).
