Decarburization prevention mold manufacturing method
A production method and anti-decarburization technology, applied in manufacturing tools, casting molding equipment, casting mold components, etc., can solve the problems of environmental pollution, human harm, labor and labor, etc., to prevent environmental pollution, reduce damage, and save money. human effect
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Embodiment 1
[0020] After the 42CrMo material product is poured, use silicon dioxide as a diluent to mix with the mixture of zirconium powder and coal gangue powder, add graphite powder with 4% weight of coal gangue powder to make coal gangue slurry. The layer is coated with gangue slurry for 17s, and the back layer of the mold is coated with coal gangue slurry for 10s. After air-drying, the coating is repeated for 5 layers. After roasting at 1100 °C, pour molten steel at 1600 °C. Silicon and carbon powder react chemically to form silicon carbide. Silicon carbide reacts with oxygen at high temperature to form a dense Si island glass phase, which prevents oxygen from contacting silicon carbide and prevents silicon carbide from continuing to oxidize, thereby preventing oxidation (anti-decarburization). ) effect.
Embodiment 2
[0022] After the casting of the 42CrMo material product is completed, use silicon dioxide as a diluent to mix with the mixture of zirconium powder and coal gangue powder, add graphite powder with 6% weight of coal gangue powder to make coal gangue slurry, and the second mold of the mold is The layer is coated with gangue slurry for 20s, and the back layer of the mold is coated with coal gangue slurry for 13s. After air-drying, the coating is repeated for 5 layers. After roasting at 1300 °C, pour molten steel at 1700 °C. Silicon and carbon powder react chemically to form silicon carbide. Silicon carbide reacts with oxygen at high temperature to form a dense Si island glass phase, which prevents oxygen from contacting silicon carbide and prevents silicon carbide from continuing to oxidize, thereby preventing oxidation (anti-decarburization). ) effect.
Embodiment 3
[0024] After the casting of the 42CrMo material product is completed, use silicon dioxide as a diluent to mix with the mixture of zirconium powder and coal gangue powder, and add graphite powder with 5% weight of coal gangue powder to make coal gangue slurry. The layer is coated with gangue slurry for 18s, and the back layer of the mold is coated with coal gangue slurry for 12s. After air-drying, the coating is repeated for 5 layers. After roasting at 1200 °C, pour molten steel at 1650 °C. Silicon and carbon powder react chemically to form silicon carbide. Silicon carbide reacts with oxygen at high temperature to form a dense Si island glass phase, which prevents oxygen from contacting silicon carbide and prevents silicon carbide from continuing to oxidize, thereby preventing oxidation (anti-decarburization). ) effect.
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