Full mold casting technique for diesel engine cylinder body
A technology of lost foam casting and diesel engine, applied in the direction of manufacturing tools, casting molding equipment, casting molds, etc., can solve problems such as insurmountable, achieve the effect of solving the low quality of castings and realizing mass production
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[0018] The present invention will now be further described in conjunction with specific examples, and the following examples are intended to illustrate the present invention rather than further limit the present invention.
[0019] A lost foam casting process for a diesel engine cylinder block, comprising the following steps: selecting expandable methyl methacrylate and styrene copolymer resin beads, and the particle size of the original beads is equal to 1 / 10 of the minimum wall thickness of the casting , inject 1 kg of expandable methyl methacrylate and styrene copolymer resin beads into the intermittent steam pre-expansion machine at a time, and use time relay and temperature controller to control synchronously. The pre-expansion time is 35s and the temperature is 95°C. Simultaneously, control the pre-expansion density to be 23g / l; Place the pre-foamed expandable methyl methacrylate and styrene copolymer resin beads in a dry, ventilated silo for aging for 12 hours; Methyl m...
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