Khoom Description
Tungsten vial shielding thawv rau TC99 isotope yog li tseem ceeb dua hauv Mdecial daim ntawv thov. Vim nws lub ntom ntom ntom nti thiab hluav taws xob thaiv cov khoom, tungsten almetium shield cov ntaub ntawv feem ntau siv nyob rau hauv cov ntaub thaiv hluav taws xob vim lawv cov khoom tsis muaj tshuaj lom thiab ib puag ncig phooj ywg. Lub technetium-99 tungsten radiation shield tuaj yeem tsim rau hauv cov khoom siv hluav taws xob tiv thaiv hluav taws xob rau khaws technetium-99 cov tshuaj siv hluav taws xob, uas yog siv rau technetium-99 cov ntawv xov tooj cua los kuaj xyuas cov kab mob hauv nruab nrog cev thiab kev ua haujlwm, thiab rau cov thyroid imaging.
Piv rau cov ntaub thaiv npog ntawm tib qhov hnyav, tungsten alloy shields muaj qhov ntim tsuas yog ib feem peb ntawm cov hlau lead, tab sis lawv qhov ntom ntom ua rau lawv muaj peev xwm nqus tau hluav taws xob piv rau txhuas. Tom qab qhov hnyav tau txiav txim siab, qhov ceev yog siab dua thiab lub thickness ntawm tungsten alloy yog thinner. Vim lub siab ceev ntawm tungsten alloy, lub thickness ntawm tungsten alloy hluav taws xob resistant ntim yog nyias, tab sis lawv cov hluav taws xob nqus tau ntau dua.
Cov khoom siv shielding specification
|
Lub npe |
90 wb |
92.5 wb |
95 wb |
97 wb |
90 NWs |
95w nco |
|
Khoom siv |
90% W |
92.5% W |
95% W |
97% W |
90% W |
95% W |
|
7% Nws |
5.25% Nws |
3.5% Nws |
2.1% Nws |
6% Nws |
3.5% Nws |
|
|
3% Fe |
2.25% Fe |
1.5% Fe |
0.9% Fe |
4% Cu |
1.5% Cu |
|
|
Qhov ceev (g / cc) |
17 gm/cc |
17.5 g / c |
18 gm/cc |
18.5 g / c |
17 gm/cc |
18 gm/cc |
|
Qhov ceev (lbs / in3) |
0.614 |
0.632 |
0.65 |
0.668 |
0.614 |
0.65 |
Specification
|
Khoom siv |
WNiFe alloy |
|
Shield Thickness |
Tungsten (10-20 hli) |
|
Ntim |
customized |
|
Qhov ntom |
17. 0g/cm3-18.5g/cm3 |
|
Loj |
customized |
|
Lead iav Qhov rai |
1.5-3mmPb lossis customized |
|
Lub sij hawm xa tuaj |
Txog 20 hnub |
|
Txuj |
ASTM, GB |
Cim npe nrov: Tuam Tshoj tungsten vial shielding thawv lwm tus neeg, Hoobkas
