Sprinkling method for interlayer isolation material used in sintering of stacked magnetic core blanks

Abstract

The invention discloses a sprinkling method for an interlayer isolation material used in sintering of stacked magnetic core blanks. The method comprises the following steps: densely arranging magnetic core blanks on a transition plate with a smooth and flat surface; uniformly sprinkling the interlayer isolation material on the magnetic core blanks; slowly pushing the magnetic core blanks on which the interlayer isolation material is sprinkled onto a load bearing plate from the transition plate by using a special strip-shaped tool; and repeatedly carrying out the above-mentioned steps until desired layers of the magnetic core blanks are arranged. According to the invention, the unbending special strip-shaped tool with a smooth and flat surface is employed to slowly push the blanks to the load bearing plate on which pulverized corundum is uniformly sprinkled, so deformation of magnetic cores caused by adhesion between adjacent magnetic cores is avoided, difficulty in blank unloading is reduced for operators, and the breakage rate of the magnetic cores is decreased.

Description

technical field [0001] The invention relates to the technical field of magnetic cores, in particular to a method for releasing small magnetic core blanks and interlayer spacers. Background technique [0002] In the prior art, after sprinkling corundum sand on the setter, the small magnetic core blanks are directly densely arranged on the setter according to the required quantity, such as figure 1 Shown; Then spread the interlayer spacer evenly on the upper surface of the blank, and then place the small magnetic core blank on the spacer that has been spread, as shown figure 2 shown, and so on until the specified number of layers is reached. [0003] However, after the small magnetic core blanks are densely arranged in one layer, the interlayer spacers are sprinkled, so the small magnetic core blanks between adjacent layers are close together without spacers. During sintering, Due to the expansion of blanks, it is easy to cause adhesion between adjacent magnetic cores, whic...

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Problems solved by technology

[0003] However, after the small magnetic core blanks are densely arranged in one layer, the interlayer spacers are sprinkled, so the small magnetic core blanks between adjacent layers are close together without spacers. During sintering, Due to the expansion of blanks, it is easy to cause adhesion between adjacent magnetic cores, resulting in deformation of magnetic cores, lower pass rate, and at the same time, it increases the difficulty of blanking for operators and increases the damage rate of magnetic cores, which needs to be improved urgently.

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