High-strength and corrosion-resistant surface treatment process for neodymium-iron-boron magnetic material
A surface treatment, NdFeB technology, used in surface pretreatment, devices for coating liquids on surfaces, permanent magnet manufacturing, etc. The magnetic flux of NdFeB magnets can improve corrosion resistance, ensure corrosion resistance and prevent corrosion.
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Embodiment 1
[0027] This specific implementation mode is a high-strength corrosion-resistant surface treatment process for NdFeB magnetic materials, and the specific steps are:
[0028] Step 1. Prepare a barrier preservative; take 1kg of phosphate-modified resin, 0.5kg of organic solvent, and 15g of additives, control the solid content of phosphate-modified resin to 35%, mix them evenly, and grind them thoroughly , so that the particle size of the dispersed particles in the mixture is less than 1 μm, that is, a barrier preservative is obtained;
[0029] Step 2. Pretreatment of NdFeB magnets; place the NdFeB magnets in a heating device that can be vacuumed for heating, and control the heating temperature of the heating device to 160 ° C. When the NdFeB magnets themselves reach the heating device After the heating temperature, keep this state for 30 minutes, then the heating device continues to heat and vacuumize it, and control the vacuum degree in the heating device to be less than 4×10 3...
Embodiment 2
[0033] This specific implementation mode is a high-strength corrosion-resistant surface treatment process for NdFeB magnetic materials, and the specific steps are:
[0034] Step 1. Prepare a barrier preservative; take 1kg of phosphate-modified resin, 1.2kg of organic solvent, and 20g of additives, control the solid content of phosphate-modified resin to 50%, mix them evenly, and grind them thoroughly , so that the particle size of the dispersed particles in the mixture is less than 1 μm, that is, a barrier preservative is obtained;
[0035] Step 2. Pretreatment of NdFeB magnets; place the NdFeB magnets in a heating device that can be vacuumed for heating, and control the heating temperature of the heating device to 180 ° C. When the NdFeB magnets themselves reach the heating device After the heating temperature, keep this state for 25 minutes, then the heating device continues to heat and vacuumize it, and control the vacuum degree in the heating device to be less than 4×10 3...
Embodiment 3
[0039] This specific implementation mode is a high-strength corrosion-resistant surface treatment process for NdFeB magnetic materials, and the specific steps are:
[0040] Step 1. Prepare a barrier preservative; take 1kg of phosphate-modified resin, 2kg of organic solvent, and 25g of additives, control the solid content of the phosphate-modified resin to -65%, mix them evenly, and grind them thoroughly , so that the particle size of the dispersed particles in the mixture is less than 1 μm, that is, a barrier preservative is obtained;
[0041] Step 2. Pretreatment of NdFeB magnets; place the NdFeB magnets in a heating device that can be vacuumed for heating, and control the heating temperature of the heating device to 200 ° C. When the NdFeB magnets themselves reach the heating device After the heating temperature, keep this state for 15 minutes, then the heating device continues to heat and vacuumize it, and control the vacuum degree in the heating device to be less than 4×10...
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