A kind of shock resistance ceramic insulator and its manufacture method

A kind of shock resistance ceramic insulator and its manufacture method

  • CN 106,495,701 A
  • Filed: 10/25/2016
  • Published: 03/15/2017
  • Est. Priority Date: 10/25/2016
  • Status: Active Application
First Claim
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1. a kind of manufacture method of shock resistance ceramic insulator, it is characterised in that comprise the following steps:

  • 1)

    Raw material prepare1. aluminium borate whisker 6-10 parts, aluminium nitride micro mist 70-80 parts of 3 μ

    m -5 μ

    m of particle size, particle are prepared by weightSilicon carbide micro-powder 20-25 parts of 3 μ

    m -5 μ

    m of size, calcirm-fluoride powder 5-8 parts, carbon dust 2-3 parts, molybdenum silicide 2-3 parts, positive silicic acid secondFat 1-2 parts, absolute ethyl alcohol 1-2 parts, pure water 10-15 parts, thermoplastic phenolic resin 4-6 parts;

    2. aluminium borate whisker, silicon carbide micro-powder, carbon dust and molybdenum silicide, aluminium nitride micro mist and calcirm-fluoride are mixed and stirred for uniformly,As mixed material;

    2)

    The preparation of mould1. mould is made using graphite, contoured three-dimensional size classification pressed by the mould, is one-level per 4mm-5mm, by from small to largeIt is divided into the first center portion mould, the second center portion mould, wherein the 3rd center portion mould ... top layer mould, the first center portion mould mostBig effective diameter is not more than Φ

    10mm;

    2. micro forming is carried out to the inner surface and outer surface of insulator matching area of top layer mould, the micro forming is specially vertical friendshipThe deep 1mm-1.2mm of mistake, the groove of width 5mm-6mm, adjacent parallel grooves Distances Between Neighboring Edge Points are 3mm-4mm;

    3)

    Pre-prepared insulator1. by 1)

    The mixed material that 2. middle step obtains is mixed with tetraethoxysilance, absolute ethyl alcohol, pure water, thermoplastic phenolic resinMerging stirs, and obtains stand-by material;

    2. stand-by for part material is packed in the first center portion mould, the first center portion mould is placed at 800 DEG C -850 DEG C,5h-8h is incubated in protective atmosphere or vacuum environment, the first center portion biscuit is obtained;

    3. the thick stand-by materials of 2mm-2.5mm are filled in the second center portion mold bottom again, then the first center portion biscuit is placed in secondCenter portion mold center, then will be full for the filling of the second center portion mould using stand-by material, by the second center portion mould be placed in 800 DEG C-At 850 DEG C, in protective atmosphere or vacuum environment, 5h-8h is incubated, obtains the second center portion biscuit;

    4. by step, 3. method is repeated successively, is completed the pre-sintering of the 3rd center portion blank ... top layer blank, is insulatedSub- biscuit;

    4)

    Insulator is sintered and is completed1. by 2)

    The pre-prepared insulator biscuit that 3. middle step obtains is placed in the protective atmosphere of 18Mpa-20Mpa, with 1000 DEG CThe heating rate of 200 DEG C/h-250 DEG C/h maintained above is warming up to 1600 DEG C -1700 DEG C, temperature retention time 4h-7h;

    2. after the completion of sintering, along with the furnace cooling when furnace temperature T is not less than 1000 DEG C;

    Furnace temperature T is in 800 DEG C≤

    T <

    , 1000 DEG C of half blow-onDoor cooling;

    800 DEG C of air coolings of coming out of the stove of furnace temperature T <



    The insulator blank of sintering is deviate from mould after being air cooled to 150 DEG C of T <



    3. vibrator deburring and polishing are carried out to insulator blank using diamond abrasive vibrator deburring equipment, that is, is obtainedRequired insulator.

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