A kind of cast iron sand mold protective coating and preparation method thereof
A protective coating and cast iron sand technology, which is applied to casting molding equipment, coatings, casting molds, etc., can solve the problems of reducing the bad thickness of nodular iron castings and large thickness of nodular iron castings, and achieve the reduction of bad nodularization thickness , Improve smoothness, good penetration effect
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Embodiment 1
[0056] Embodiment 1 also provides the preparation method of cast iron sand mold protective coating, and the steps are as follows:
[0057] (1) Mix the binder and the suspending agent in the solvent, and emulsify and stir at a high speed of 30°C for 30 minutes in the reaction kettle to obtain the bonding system;
[0058] (2) Disperse the refractory aggregate in the bonding system obtained in step (1), stir and disperse at a high speed for 60 minutes, and obtain a cast iron sand mold protective coating.
[0059] Table 1
[0060]
[0061]
[0062] In Table 1, "parts" means parts by mass, and "-" means that the content of the corresponding component is 0.
Embodiment 6
[0082] The only difference from Example 5 is that the forsterite powder is replaced by dolomite powder, and the parts by mass and particle size distribution remain unchanged.
Embodiment 7
[0084] The only difference from Example 5 is that the dolomite powder is replaced by forsterite powder, and the parts by mass and particle size distribution remain unchanged.
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