China Low Expansion Alloy Kovar 4j29 Waya, 29HK Waya yeGirazi Sealing Alloy Kugadzira uye Fekitori

Waya yeKovar 4j29 yekuwedzera yakaderera, 29HK waya yekuvhara girazi, Mufananidzo wakaratidzwa

Waya yeKovar 4j29 yekuwedzera yakaderera, waya ye29HK yekuisa chisimbiso chegirazi

Tsananguro pfupi:

Chiumbwa cheAlloy-4J29 (Chiumbwa chekuwedzera)
(Zita rakajairika: Kovar, Nilo K, KV-1, Dilver Po, Vacon 12)
Alloy-4J29 inozivikanwawo seKovar alloy. Yakagadzirwa kuti igutse chinodiwa chechisimbiso chegirazi chesimbi chakavimbika, chinodiwa mumidziyo yemagetsi yakaita sema light bulbs, vacuum tubes, cathode ray tubes, uye muma vacuum systems mu chemistry nedzimwe tsvakurudzo dzesainzi. Simbi zhinji hadzigone kuvhara girazi nekuti coefficient yavo yekuwedzera kwekupisa haina kufanana negirazi, saka sezvo joint ichitonhora mushure mekugadzirwa, kushushikana nekuda kwekuwedzera kwakasiyana kwegirazi nesimbi kunoita kuti joint itsemuke.

Nhamba yeModhero:Kovar

OEM:Ehe

Nyika:Yakapfava 1/2 yakasimba T-yakaoma

Kodhi yeHS:74099000

Kwakatangira:China

Tumira email kwatiri

Ruzivo rweChigadzirwa

Mibvunzo Inowanzo bvunzwa

Matagi eChigadzirwa

Alloy-4J29 haina kungowedzera kupisa kwakafanana negirazi chete, asi curve yayo yekuwedzera kupisa isina kurongeka inogona kuitwa kuti ienderane negirazi, zvichiita kuti jointi ikwanise kushivirira tembiricha yakakura. Panyaya yemakemikari, inobatanidza negirazi kuburikidza nechikamu chepakati che oxide layer ye nickel oxide ne cobalt oxide; chikamu che iron oxide chakaderera nekuda kwekuderera kwayo ne cobalt. Simba re bond rinoenderana zvakanyanya nehukobvu hwe oxide layer uye hunhu hwayo. Kuvapo kwe cobalt kunoita kuti oxide layer ive nyore kunyunguduka nekunyunguduka mugirazi rakanyunguduka. Ruvara rwe grey, grey-blue kana grey-brown runoratidza chisimbiso chakanaka. Ruvara rwesimbi runoratidza kushaya oxide, nepo ruvara rutema ruchiratidza simbi yakawandisa oxidized, muzviitiko zvese izvi zvichikonzera jointi isina simba.

Kushandiswa:Inonyanya kushandiswa muzvikamu zvemagetsi zve vacuum uye kudzora emission, shock tube, intinging tube, glass magnetron, transistors, seal plug, relay, integrated circuits lead, chassis, brackets nezvimwe zve housing sealing.

Zvakajairika%

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

Simba reKusimba, MPa

Mutemo wemamiriro ezvinhu	Mamiriro	Waya	Kubvisa
R	Nyoro	≤585	≤570
1/4I	1/4 Zvakaoma	585~725	520~630
1/2I	1/2 Zvakaoma	655~795	590~700
3/4I	3/4 Zvakaoma	725~860	600~770
I	Zvakaoma	≥850	≥700

Zvimiro zvepanyama zvakajairika

Kuwanda (g/cm3)	8.2
Kudzivirira kwemagetsi pa20ºC(Ωmm2/m)	0.48
Tembiricha yekudzivirira (20ºC~100ºC)X10-5/ºC	3.7~3.9
Nzvimbo yeCurie Tc/ºC	430
Elastic Modulus, E/ Gpa	138

Kuwedzerwa kwehuwandu hwekuwedzera

θ/ºC	α1/10-6ºC-1	θ/ºC	α1/10-6ºC-1
20~60	7.8	20~500	6.2
20~100	6.4	20~550	7.1
20~200	5.9	20~600	7.8
20~300	5.3	20~700	9.2
20~400	5.1	20~800	10.2
20~450	5.3	20~900	11.4

Kufambisa kwekupisa

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

Maitiro ekurapa kupisa
Kudzikisa kushushikana	Dziisa kusvika 470~540ºC wobva wabata kweawa imwe kusvika mbiri. Dzinotonhora
kunaya	Mu vacuum inodziya kusvika 750 ~ 900ºC
Nguva yekubata	Maminetsi gumi nemana ~ awa imwe chete.
Mwero wekutonhora	Hapana kupfuura 10 ºC/min inotonhorerwa kusvika 200 ºC