Tuam Tshoj Tsawg Expansion Alloy Kovar 4j29 Hlau, 29HK Hlau rau iav Sealing Alloy Chaw tsim khoom thiab Hoobkas

Low Expansion Alloy Kovar 4j29 Hlau, 29HK Hlau rau iav Sealing Alloy

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Alloy-4J29 (Expansion alloy)
(Common Name: Kovar, Nilo K, KV-1, Dilver Po, Vacon 12)
Alloy-4J29 kuj hu ua Kovar alloy. nws tau tsim los ua kom tau raws li qhov yuav tsum tau muaj kev ruaj ntseg iav-rau-hlau foob, uas yuav tsum tau muaj nyob rau hauv cov khoom siv hluav taws xob xws li lub teeb qhov muag teev, lub tshuab nqus tsev, cathode ray tubes, thiab hauv lub tshuab nqus tsev hauv chemistry thiab lwm yam kev tshawb fawb tshawb fawb. Feem ntau cov hlau tsis tuaj yeem muab khi rau iav vim tias lawv cov coefficient ntawm thermal expansion tsis zoo ib yam li iav, yog li qhov sib koom ua ke txias tom qab tsim cov kev ntxhov siab vim qhov sib txawv ntawm qhov sib txawv ntawm cov iav thiab hlau ua rau kev sib koom ua ke.

Qauv NO.:Cov

OEM:Yog lawm

Xeev:Mos 1/2 hard hard T-hard

HS Code:7 4099000

Keeb kwm:Tuam Tshoj

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FAQ

Khoom cim npe

Alloy-4J29 tsis tsuas yog muaj thermal expansion zoo ib yam li iav, tab sis nws cov nonlinear thermal expansion nkhaus feem ntau tuaj yeem ua kom haum rau lub khob, yog li tso cai rau kev sib koom ua ke rau qhov kub thiab txias. Chemically, nws bonds rau iav ntawm nruab nrab oxide txheej ntawm nickel oxide thiab cobalt oxide; Qhov feem ntawm cov hlau oxide yog tsawg vim nws txo nrog cobalt. Lub zog ntawm daim ntawv cog lus yog nyob ntawm qhov oxide txheej thickness thiab tus cwj pwm. Lub xub ntiag ntawm cobalt ua rau oxide txheej yooj yim rau yaj thiab yaj hauv cov iav molten. Grey, grey-xiav los yog grey-xim av xim qhia tau hais tias ib tug zoo seal. Cov xim hlau qhia tias tsis muaj oxide, thaum xim dub qhia tias cov hlau oxidized dhau lawm, ob qho tib si ua rau muaj kev sib koom ua ke tsis muaj zog.

Daim ntawv thov:Mas siv nyob rau hauv hluav taws xob lub tshuab nqus tsev Cheebtsam thiab emission tswj, poob siab tube, igniting tube, iav magnetron, transistors, foob plug, relay, integrated circuits lead, chassis, brackets thiab lwm yam vaj tse sealing.

Muaj pes tsawg leeg%

Ni	28.5-29.5 Nws	Fe	Bal.	Co	16.8-17.8 Nws	Si	≤0.3
Mo	≤0.2	Cu	≤0.2	Cr	≤0.2	Mn	≤0.5
C	≤ 0.03	P	≤ 0.02	S	≤ 0.02

Tensile zog, MPa

Code ntawm tus mob	Qhov xwm txheej	Hlau	Sawb
R	Mos	≤ 585	≤ 570
1/4 Ib	1/4 Khob	585-725 : kuv	520-630 : kuv
1/2 Ib	1/2 Nyhav	655-795 Ib	590-700 Nws
3/4 Ib	3/4 Khob	725-860 : kuv	600-770 Nws
I	Nyuaj	≥850	≥700

Hom Lub cev muaj zog

Qhov ceev (g / cm3)	8.2
Hluav taws xob tiv taus ntawm 20ºC (Ωmm2 / m)	0.48 ib
Qhov ntsuas kub ntawm kev tiv thaiv (20ºC ~ 100ºC) X 10-5 / ºC	3.7-3.9 Nws
Curie point Tc/ºC	430
Elastic Modulus, E / Gpa	138

Coefficient ntawm expansion

θ/ºC	1/10-6ºC-1	θ/ºC	1/10-6ºC-1
20 ~ 60	7.8 ib	20-500 Nws	6.2
20-100 Nws	6.4	20-550 Nws	7.1
20-200 Nws	5.9	20-600 Nws	7.8 ib
20-300 Nws	5.3	20-700 Nws	9.2 ib
20-400 Nws	5.1	20-800 Nws	10.2
20-450 Nws	5.3	20-900 Nws	11.4

Thermal conductivity

θ/ºC	100	200	300	400	500
λ / W / (m * ºC)	20.6	21.5 ib	22.7 ib	23.7 ib	25.4 ib

Cov txheej txheem kev kho cua sov
Annealing rau kev ntxhov siab	Kub rau 470 ~ 540ºC thiab tuav 1 ~ 2 teev. Txias cia
annealing	Nyob rau hauv lub tshuab nqus tsev rhuab mus rau 750 ~ 900ºC
Tuav lub sijhawm	14 feeb ~ 1h.
Txias tus nqi	Tsis pub tshaj 10 ºC / min txias rau 200 ºC