Chill coating for casting
A cold iron coating and casting technology, applied in the direction of coating, casting mold, casting mold composition, etc., can solve the problems of inconspicuous effect, increase of casting production cost, difficult to eliminate, etc., to reduce cost, improve casting yield, avoid white mouth effect
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[0007] Embodiment 1: This cold iron paint is made up of the following substances by weight percentage: graphite powder 88.5%, sodium bentonite 3%, iron oxide red powder 2.5%, ferrosilicon powder 2.5%, rosin 3.5%, appropriate amount of ethanol; graphite powder is no Shaped graphite powder and flake graphite powder are used in combination, and the percentage by weight is: flake graphite powder 30%, amorphous graphite powder 70%.
[0008] The configuration method of the coating: 1. Crush the rosin and pass it through a 200 / 270 sieve; 2. After dissolving the rosin in ethanol, add bentonite and stir, then add flake graphite powder, amorphous graphite powder, iron oxide red powder, silicon dioxide Iron powder, mix well and use. When using, brush evenly on the working surface of cold iron with a row pen, the thickness is about 0.1-0.3mm, and then light and bake.
Example Embodiment
[0009] Embodiment 2: This cold iron coating is made up of the following substances by weight percentage: graphite powder 89%, sodium bentonite 2%, iron oxide red powder 3%, ferrosilicon powder 3%, rosin 3%, appropriate amount of ethanol; amorphous graphite powder The ratio to flake graphite powder is 25:75.
Example Embodiment
[0010] Embodiment 3: This cold iron coating is made up of the following substances by weight percentage: graphite powder 88%, sodium bentonite 4%, iron oxide red powder 2%, ferrosilicon powder 2%, rosin 4%, appropriate amount of ethanol; amorphous graphite powder The ratio to flake graphite powder is 35:65.
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