Cast-infiltration method for improving surface corrosion resistance of casting
A technology for corrosion resistance and casting, which is applied in the field of casting infiltration to improve the corrosion resistance of the surface of castings, can solve the problems of increasing size requirements of titanium-steel clad plates, difficult market demand for products, and high production costs, and achieve a combined effect. Good, saving precious metals, short production cycle effect
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Embodiment 1
[0027] A casting infiltration method for improving the corrosion resistance of the casting surface, comprising the following steps:
[0028] Step 1. Weigh titanium-nickel alloy particles with a particle size of 40-200 mesh, polyvinyl butyral and alcohol, and mix them uniformly to form a composite coating for later use. The amount of PVB added is 2% of the weight of the alloy, and the amount of titanium and nickel is The mass ratio is 80:20;
[0029] Step 2. Coat the composite coating prepared in step 1 on the part of the mold cavity corresponding to the casting to improve corrosion resistance. The coating thickness is 6mm. After coating, ignite the composite coating to make the composite coating solidify and adhere to the In the mold cavity, spare;
[0030] Step 3, put the casting mold in step 2 into the casting box, pour argon gas into the casting box to form a local protective atmosphere, and set aside;
[0031] Step 4: Melt the cast iron to be poured to 1350° C. and then ...
Embodiment 2
[0034] A casting infiltration method for improving the corrosion resistance of the casting surface, comprising the following steps:
[0035] Step 1. Weigh titanium-nickel alloy particles with a particle size of 40-200 mesh, polyvinyl butyral and alcohol, and mix them uniformly to form a composite coating for later use. The amount of PVB added is 2% of the weight of the alloy, and the amount of titanium and nickel is The mass ratio is 90:10;
[0036] Step 2. Apply the composite coating prepared in step 1 on the part of the mold cavity corresponding to the casting to improve corrosion resistance. The coating thickness is 8mm. After the coating is completed, ignite the composite coating to make the composite coating solidify and adhere to the In the mold cavity, spare;
[0037] Step 3, put the casting mold in step 2 into the casting box, pour argon gas into the casting box to form a local protective atmosphere, and set aside;
[0038] Step 4: Melt the cast steel to be poured to...
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