A lost foam real mold casting process
A technology of solid mold casting and lost foam, applied in manufacturing tools, casting equipment, cores, etc., can solve problems such as increasing the complexity of process operations, reducing production efficiency, affecting the quality of castings, and improving the working environment and production conditions. , reduce labor intensity and achieve the effect of mass production
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Embodiment 1
[0033] A lost foam full mold casting process is characterized in that it comprises the following steps:
[0034] Step S1, selection of foam plastic beads: choose expandable acrylonitrile / benzyl N-allyl carbamate / phenyl vinyl sulfone copolymer as the original beads; the particle size of the original beads is less than or equal to the casting 1 / 8 of the minimum wall thickness;
[0035]Step S2, production of lost foam: first, pre-foam the foam plastic beads made in step S1, then place them in a dry and ventilated silo for aging, then fill them into the cavity of the metal mold, heat, Make the beads expand again, fill the gaps between the beads, and make the beads fuse with each other to form a smooth surface, that is, the model, and finally cool the mold; then combine the model with the pouring riser model and bond it with an adhesive Together, form a model cluster to make a solid casting foam plastic model corresponding to the structure and size of the parts to be cast;
[003...
Embodiment 2
[0045] A lost foam full mold casting process is characterized in that it comprises the following steps:
[0046] Step S1, selection of foam plastic beads: choose expandable acrylonitrile / benzyl N-allyl carbamate / phenyl vinyl sulfone copolymer as the original beads; the particle size of the original beads is less than or equal to the casting 1 / 9 of the minimum wall thickness;
[0047] Step S2, production of lost foam: first, pre-foam the foam plastic beads made in step S1, then place them in a dry and ventilated silo for aging, then fill them into the cavity of the metal mold, heat, Make the beads expand again, fill the gaps between the beads, and make the beads fuse with each other to form a smooth surface, that is, the model, and finally cool the mold; then combine the model with the pouring riser model and bond it with an adhesive Together, form a model cluster to make a solid casting foam plastic model corresponding to the structure and size of the parts to be cast;
[00...
Embodiment 3
[0057] A lost foam full mold casting process is characterized in that it comprises the following steps:
[0058] Step S1, selection of foam plastic beads: choose expandable acrylonitrile / benzyl N-allyl carbamate / phenyl vinyl sulfone copolymer as the original beads; the particle size of the original beads is less than or equal to the casting 1 / 10 of the minimum wall thickness;
[0059] Step S2, production of lost foam: first, pre-foam the foam plastic beads made in step S1, then place them in a dry and ventilated silo for aging, then fill them into the cavity of the metal mold, heat, Make the beads expand again, fill the gaps between the beads, and make the beads fuse with each other to form a smooth surface, that is, the model, and finally cool the mold; then combine the model with the pouring riser model and bond it with an adhesive Together, form a model cluster to make a solid casting foam plastic model corresponding to the structure and size of the parts to be cast;
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