Engine dry cylinder liner machine body foam model and manufacturing method thereof

Abstract

The invention discloses an engine dry cylinder liner machine body foam model. A water jacket sand core is arranged at a water jacket part between an engine cylinder liner and a machine body; and multiple fixed support clamps are arranged in a machine body foam model at the outer side of the water jacket sand core. The invention further discloses a manufacturing method of the engine dry cylinder liner machine body foam model; the fixed support clamps are put in corresponding positions in a mold for preparing the foam model; magnets are put at the outer side of the mold for sucking the fixed support clamps; and a foam material is added for preparing. When an evanescent mode is used for casting a dry cylinder liner machine body of an engine, the fixed support clamps are inlaid in the foam model, so that the phenomenon of shifting the sand core in the casting can be effectively prevented, and the product pass percent is improved.

Description

technical field [0001] The invention relates to a lost foam casting method, in particular to a foam model of an engine dry-type cylinder liner body, and also to a method for manufacturing the foam model. Background technique [0002] Lost foam casting, also known as dry sand solid mold negative pressure casting, is called EPC abroad. It is one of the most advanced casting processes in the world at present. It is known as a "revolution" in the history of casting. It is called the 21st century at home and abroad. Green casting. According to the process requirements, the foam model is made first, coated with special high-temperature-resistant paint, dried, placed in a special sand box, and then filled with dry sand according to the process requirements, compacted by three-dimensional vibration, and poured in a vacuum state The molten metal, at this time, the foam model gasifies and disappears, and the molten metal replaces the foam model to reproduce the same casting as the fo...

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Problems solved by technology

[0003] In the dry cylinder liner body produced by the lost foam casting process, in order to prevent the problem of insufficient sand filling caused by the limited gap of the water jacket and the leakage of molten metal, the combination of lost foam and sand core technology can effectively prevent the filling Leakage of molten metal caused by inaccurate sand, but during pouring, the sand core often drifts when it encounters molten metal, which will cause inaccurate structural dimensions of the casting and seriously affect the quality of the product

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