Granulated powder and method for producing granulated powder
A powder and granulation technology, which is applied in the field of granulation powder and granulation powder manufacturing, can solve the problems of high price, lower sintered body density, and high operating capital
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Embodiment 1
[0178] First, 2% Ni-Fe alloy powder (manufactured by EPSON ATMIX Co., Ltd., with a true density of 7.827 g / cm3) with an average particle diameter of 6 μm produced by a water spray method was prepared. 3 ) as raw material powder. In addition, the composition of the 2% Ni-Fe alloy is: C: 0.4% by weight to 0.6% by weight, Si: 0.35% by weight or less, Mn: 0.8% by weight or less, P: 0.03% by weight or less, S: 0.045% by weight Below, Ni: not less than 1.5% by weight and not more than 2.5% by weight, Cr: not more than 0.2% by weight, Fe: the remainder.
[0179] On the other hand, polyvinyl alcohol, montan wax, and sorbitan fatty acid ester were prepared as organic binders. In addition, ion-exchanged water was prepared as a solvent. In addition, the added amount of the solvent was 50 g per 1 g of the organic binder.
[0180] Next, these organic binders were mixed with ion-exchanged water and cooled to room temperature to prepare a binder solution. Moreover, the addition amount ...
Embodiment 2~9
[0188] Granulated powders were obtained in the same manner as in Example 1, except that the compositions and addition amounts of waxes and nonionic surfactants were changed to those shown in Table 1.
Embodiment 10~12
[0190] Except that the addition amount of waxes and nonionic surfactants was changed to the amount shown in Table 1, and the organic amines shown in Table 1 were added to the organic binder, respectively, the same as in Example 1 A granulated powder was obtained.
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