TiCp/EPS lost foam manufacturing technology and steel matrix composite casting technology by means of TiCp/EPS lost foam
A preparation process and technology of lost foam, which is applied in the field of lost foam casting of composite materials in the field of metal forming. It can solve the problems that the thickness of the wear-resistant layer cannot be made too thick, the thickness of the coating is difficult to control accurately, and the size of the parts cannot be controlled. Operational complexity, improving the comprehensive mechanical properties of the product, and benefiting the effect of saving energy and reducing consumption
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Embodiment 1
[0070] A TiCp / EPS lost foam preparation process, comprising the following process steps:
[0071] Step 1: Mixing preparation: TiC surface is coated with Ni powder, weigh 10 parts of TiC particles, 2 parts of rare earth powder, 87 parts of EPS beads, 1 part of binder, and weigh the TiC particles, rare earth Mix the powder, EPS beads and binder evenly. Wherein, the particle size of the TiC particles is 600 mesh, and the rare earth powder is rare earth magnesium powder.
[0072] Step 2: Preheat the mold so that the mold temperature reaches 100°C.
[0073] Step 3: Use compressed air to fill the mixed material into the mold, and pass steam into the mold with a steam temperature of 120°C; control the pressure inside the mold at 0.18MPa, and carry out the pressure-holding operation, and set the pressure-holding time to 1min.
[0074] Step 4: After the pressure holding operation is completed, release hot steam and spray water on the back of the mold to cool the mold to 47°C. After t...
Embodiment 2
[0082]A TiCp / EPS lost foam preparation process, comprising the following process steps:
[0083] Step 1: Preparation of mixture: Coat the surface of TiC with Ni powder, weigh 5 parts of TiC particles, 2 parts of rare earth powder, 90 parts of EPS beads, and 3 parts of binder by volume, and weigh the TiC particles, rare earth Powder, EPS beads, and binder are mixed evenly. Wherein, the particle size of the TiC particles is 800 mesh, and the rare earth powder is rare earth magnesium powder.
[0084] Step 2: Preheat the mold so that the mold temperature reaches 100°C.
[0085] Step 3: Use compressed air to fill the mixed material into the mold, and pass steam into the mold with a steam temperature of 125°C; control the pressure inside the mold at 0.23MPa, and perform a pressure-holding operation, and set the pressure-holding time to 5min.
[0086] Step 4: After the pressure holding operation is completed, release hot steam and spray water on the back of the mold to cool the mol...
Embodiment 3
[0094] A TiCp / EPS lost foam preparation process, comprising the following process steps:
[0095] Step 1: Mixing preparation: Ni powder is coated on the surface of TiC, 8 parts of TiC particles, 1 part of rare earth powder, 89 parts of EPS beads, 2 parts of binder are weighed by volume, and the weighed TiC particles, rare earth Powder, EPS beads, and binder are mixed evenly. Wherein, the particle size of the TiC particles is 1000 mesh, and the rare earth powder is rare earth magnesium powder.
[0096] Step 2: Preheat the mold so that the mold temperature reaches 100°C.
[0097] Step 3: Use compressed air to fill the mixed material into the mold, and pass steam into the mold with a steam temperature of 110°C; control the pressure inside the mold at 0.25MPa, and carry out the pressure-holding operation, and set the pressure-holding time to 7min.
[0098] Step 4: After the pressure holding operation is completed, release hot steam, spray water on the back of the mold to cool th...
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