Casting method for casting high-end large precision castings
A precision casting and large-scale technology, applied in the direction of casting molding equipment, casting molds, casting mold components, etc., can solve the problems of difficult to produce high-quality products, inability to balance large and fine castings, environmental pollution, etc., and achieve less casting defects , good quality, and the effect of avoiding air pollution
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Embodiment 1
[0031] Embodiment 1, a casting method for casting high-end large precision castings, comprising the following steps:
[0032] Step 1) Molding:
[0033] Step 1.1) Make a polystyrene foam white mold consistent with the casting entity;
[0034] Step 1.2) Check the density and appearance quality of the EPS white mold, smooth the surface protrusions with fine sandpaper, fill the surface holes with modification paste, and smooth the loose surface with modification liquid and smooth with fine sandpaper;
[0035] Step 1.3) Bond the gate and riser according to the casting process diagram, and if necessary, set cold iron or cooling measures at the hot joint as required;
[0036] Step 1.4) Reinforce the easily deformable parts of the polystyrene foam white mold, place the white mold on a flat plate or tooling, and use fiber rods, refractory cloth or ceramic strips to correct and reinforce it to prevent deformation; the outline of the white mold If the size is greater than 1000mm or the...
Embodiment 2
[0050] Embodiment 2, a casting method for casting high-end large precision castings, comprising the following steps:
[0051] Step 1) Molding:
[0052] Step 1.1) Make a polystyrene foam white mold consistent with the casting entity;
[0053] Step 1.2) Check the density and appearance quality of the EPS white mold, smooth the surface protrusions with fine sandpaper, fill the surface holes with modification paste, and smooth the loose surface with modification liquid and smooth with fine sandpaper;
[0054] Step 1.3) Bond the gate and riser according to the casting process diagram, and if necessary, set cold iron or cooling measures at the hot joint as required;
[0055] Step 1.4) Reinforce the easily deformable parts of the polystyrene foam white mold, place the white mold on a flat plate or tooling, and use fiber rods, refractory cloth or ceramic strips to correct and reinforce it to prevent deformation; the outline of the white mold If the size is greater than 1000mm or the...
Embodiment 3
[0069] Embodiment 3, a casting method for casting high-end large precision castings, comprising the following steps:
[0070] Step 1) Molding:
[0071] Step 1.1) Make a polystyrene foam white mold consistent with the casting entity;
[0072] Step 1.2) Check the density and appearance quality of the EPS white mold, smooth the surface protrusions with fine sandpaper, fill the surface holes with modification paste, and smooth the loose surface with modification liquid and smooth with fine sandpaper;
[0073] Step 1.3) Bond the gate and riser according to the casting process diagram, and if necessary, set cold iron or cooling measures at the hot joint as required;
[0074] Step 1.4) Reinforce the easily deformable parts of the polystyrene foam white mold, place the white mold on a flat plate or tooling, and use fiber rods, refractory cloth or ceramic strips to correct and reinforce it to prevent deformation; the outline of the white mold If the size is greater than 1000mm or the...
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