Manufacturing method for magnetic pearl cores
A production method and technology of bead cores, which are applied in fish farming, application, climate change adaptation, etc., can solve the problems that the production process is not suitable for large-scale production, production restrictions, volatile, etc., and achieve low cost and reduce rejection , the effect of high nuclear retention rate
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Embodiment 1
[0018] A method for making a magnetic bead core, comprising the following steps:
[0019] (1) Base material preparation: according to strontium ferrite magnetic powder (SrO·6Fe 2 o 3 ) 90%, rutile titanium dioxide pink powder (TiO 2 ) with a mass fraction of 0.5%, polyamide (PA) is used as the medium, and the base material is evenly mixed under melting conditions;
[0020] (2) Production of prototype bead cores: Prototype bead cores in the shape of spherical, ellipsoidal, drop-shaped and other shapes for cultivating free pearls are produced by using the base material by injection molding;
[0021] (3) Coating of the prototype bead nucleus: immerse the prototype bead nucleus in the melted white wax for 10 minutes, then place it in a centrifuge and centrifuge at 500 rpm for 5 minutes, take it out and cool it, at this time the surface of the prototype bead nucleus is attached There is a thin layer of paraffin wax film, which is made into a coated bead core;
[0022] (4) Magne...
Embodiment 2
[0024] A method for making a magnetic bead core, comprising the following steps:
[0025] (1) Base material preparation: according to strontium ferrite magnetic powder (SrO·6Fe 2 o 3 ) 85%, rutile titanium dioxide pink powder (TiO 2 ) with a mass fraction of 0.6%, using polycarbonate (PC) as the medium, and mixing it evenly under melting conditions to make the base material;
[0026] (2) Production of prototype bead cores: Prototype bead cores in shapes such as hemispherical and pictorial shapes used for culturing pearls with shells are produced by injection molding using the base material;
[0027] (3) Prototype bead core coating: immerse the prototype bead core in molten beeswax for 5 minutes, then place it in a centrifuge and centrifuge at a speed of 1000 rpm for 3 minutes, take it out and cool it, at this time the surface of the prototype bead core has a A thin layer of beeswax film is made into a coated bead core;
[0028] (4) Magnetization of coated bead cores: use m...
Embodiment 3
[0030] A method for making a magnetic bead core, comprising the following steps:
[0031] (1) Base material preparation: according to strontium ferrite magnetic powder (SrO·6Fe 2 o 3 ) 90%, rutile titanium dioxide pink powder (TiO 2 ) with a mass fraction of 1%, polyamide (PA) is used as the medium, and the base material is evenly mixed under melting conditions;
[0032] (2) Production of prototype bead cores: use the base material to produce spherical, ellipsoidal, and drop-shaped prototype bead cores for cultivating free pearls by injection molding;
[0033] (3) Prototype bead core coating: immerse the prototype bead core in the mixture of molten paraffin wax and beeswax for 7 minutes, then place it in a centrifuge and centrifuge at 500 rpm for 5 minutes, take it out and cool it down, at this time the prototype bead core A thin layer of paraffin wax and beeswax film is attached to the surface of the nucleus to make a coated bead nucleus;
[0034] (4) Magnetization of fil...
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