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Wayar Kovar 4j29 mai ƙarancin faɗaɗawa, Wayar HK 29HK don Hatimin Gilashi

Takaitaccen Bayani:

Alloy-4J29 (Gilashin faɗaɗawa)
(Sunan gama gari: Kovar, Nilo K, KV-1, Dilver Po, Vacon 12)
Alloy-4J29 wanda aka fi sani da Kovar alloy. An ƙirƙiro shi ne don biyan buƙatar ingantaccen hatimin gilashi-zuwa-ƙarfe, wanda ake buƙata a cikin na'urorin lantarki kamar kwararan fitila, bututun injin, bututun hasken cathode, da kuma a cikin tsarin injin injin a cikin sinadarai da sauran binciken kimiyya. Yawancin ƙarfe ba za su iya rufewa da gilashi ba saboda yawan faɗaɗa zafi da suke da shi ba iri ɗaya ne da gilashi, don haka yayin da haɗin ke sanyaya bayan an ƙera shi, damuwa saboda bambancin faɗaɗa gilashin da ƙarfe yana sa haɗin ya fashe.


  • Lambar Samfura:Kovar
  • OEM:Ee
  • Jiha:Taushi ½ mai tauri mai tauri T-hard
  • Lambar HS:74099000
  • Asali:China
  • Cikakken Bayani game da Samfurin

    Tambayoyin da ake yawan yi akai-akai

    Alamun Samfura

    Alloy-4J29 ba wai kawai yana da faɗaɗa zafi kamar gilashi ba, har ma ana iya yin lanƙwasa faɗaɗa zafi mara layi sau da yawa don daidaita gilashi, don haka yana ba da damar haɗin gwiwa ya jure yanayin zafi mai faɗi. A kimiyyance, yana haɗuwa da gilashi ta hanyar matsakaicin oxide Layer na nickel oxide da cobalt oxide; rabon ƙarfe oxide yana da ƙasa saboda raguwarsa da cobalt. Ƙarfin haɗin ya dogara sosai akan kauri da halayen oxide Layer. Kasancewar cobalt yana sa Layer oxide ya fi sauƙi ya narke kuma ya narke a cikin gilashin da aka narke. Launin toka, launin toka-shuɗi ko launin toka-kasa yana nuna kyakkyawan hatimi. Launin ƙarfe yana nuna rashin oxide, yayin da launin baƙi yana nuna ƙarfe da aka yi oxidized sosai, a duka yanayi biyu yana haifar da rauni a haɗin gwiwa.

    Aikace-aikace:Ana amfani da shi galibi a cikin kayan aikin injinan lantarki da kuma sarrafa fitar da hayaki, bututun girgiza, bututun ƙonewa, magnetron na gilashi, transistor, toshe hatimi, relay, jagorar da'irori masu haɗawa, chassis, maƙallan ƙarfe da sauran hatimin gidaje.


    Tsarin al'ada%

    Ni 28.5~29.5 Fe Bal. 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

    Ƙarfin Tashin Hankali, MPa

    Lambar sharaɗi Yanayi Waya Zirin
    R Mai laushi ≤585 ≤570
    1/4I 1/4 Mai Tauri 585~725 520~630
    1/2I 1/2 Mai Tauri 655~795 590~700
    3/4I 3/4 Mai Tauri 725~860 600~770
    I Mai Tauri ≥850 ≥700

     

    Halayen Jiki na Al'ada

    Yawan yawa (g/cm3) 8.2
    Juriyar lantarki a 20ºC (Ωmm2/m) 0.48
    Yanayin zafin jiki na resistivity(20ºC ~ 100ºC)X10-5/ºC 3.7~3.9
    Ma'aunin Curie Tc/ºC 430
    Modulus Mai Rage Ragewa, E/ Gpa 138

    Faɗaɗawa mai yawa

    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

    Maida wutar lantarki ta thermal

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

     

    Tsarin maganin zafi
    Maganin rage damuwa don rage damuwa An dumama shi zuwa 470 ~ 540ºC kuma a riƙe na tsawon awanni 1 ~ 2. Sanyaya ƙasa
    rage zafi A cikin injin dumama zuwa 750 ~ 900ºC
    Lokacin riƙewa Minti 14 ~ awa 1.
    Saurin sanyaya Ba a sanyaya fiye da 10 ºC/min ba zuwa 200 ºC






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