China Kover Expansion Alloy 4J29 Waya 0.008mm yekugadzira nekugadzira mafekitori emagetsi

Kover Expansion Alloy 4J29 Waya 0.008mm yeMagetsi Vacuum Industry

Tsananguro pfupi:

Ruzivo rweChigadzirwa

Mibvunzo Inowanzo bvunzwa

Matagi eChigadzirwa

Kuwedzera Chiwanikwa Kovar Wire Chiwanikwa-4J29

(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 ye thermal expAN SIon haina kufanana negirazi, saka sezvo joint ichitonhora mushure mekugadzirwa, kushushikana kunokonzerwa nekusiyana kwe expAN SIon rates yegirazi nesimbi kunoita kuti joint itsemuke.
(-Kovar)
Kovar isimbi yesimbi ine nickel-cobalt yakafanana neFernico, yakagadzirirwa kuti ienderane nehunhu hwegirazi reborosilicate rinopisa (~5 × 10?6 /K pakati pe30 ne200 °C, kusvika ~10 × 10?6 /K pa800 °C) kuitira kuti ikwanise kubatana zvakananga nemagetsi pamhando dzakasiyana dzekupisa. Inoshandiswa mumaconductors ane electroplated anopinda mumahamvuropu egirazi ezvikamu zvemagetsi zvakaita semachubhu evacuum (mavharuvhu), machubhu eX-ray nemachubhu e microwave nemamwe magirobhu emwenje.
Zita rekuti Kovar rinowanzoshandiswa sezita rekuti Fe-Ni alloys ine hunhu uhwu hwekupisa. Cherechedza Fe-Ni alloy Invar ine hunhu hwakafanana nehwekupisa hunoratidza hushoma hwekupisa hunokonzerwa nekupisa.

Alloy-4J29 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 ye thermal expAN SIon haina kufanana negirazi, saka sezvo joint ichitonhora mushure mekugadzirwa, kushushikana kunokonzerwa nekusiyana kwe expAN SIon rates yegirazi nesimbi kunoita kuti joint itsemuke.

Alloy-4J29 haina chete thermal expAN SIon yakafanana negirazi, asi curve yayo ye nonlinear thermal expAN SIon inogona kugadzirwa kuti ienderane negirazi, zvichiita kuti jointi ikwanise kushivirira tembiricha yakakura. Panyaya yemakemikari, inobatanidza negirazi kuburikidza ne intermediate 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.

Inonyanya kushandiswa muzvinhu zvemagetsi zvinoshandisa vacuum uye kudzora emission control, shock tube, intinging tube, glass magnetron, trAN SIstors, seal plug, relay, integrated circuits lead, chassis, brackets nezvimwe zvinovhara dzimba.

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(mm2/m)	0.48
Tembiricha yekudzivirira (20ºC~100ºC)X10-5/ºC	3.7~3.9
Nzvimbo yeCurie Tc/ºC	430
Elastic Modulus, E/ Gpa	138

Koefficient ye expAN SIon

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

Maitiro ekugovera

Zita reAlloys	Rudzi	Chiyero
Chiwanikwa-4J29	Waya	D= 0.1~8mm
Chiwanikwa-4J29	Kubvisa	W= 5~250mm	T= 0.1mm
Chiwanikwa-4J29	Foiri	W= 10~100mm	T= 0.01~0.1
Chiwanikwa-4J29	Bhawa	Dhiya= 8~100mm	L= 50~1000