Diesel engine cylinder hole water jacket sand core reinforcing method

Abstract

The invention discloses a diesel engine cylinder hole water jacket sand core reinforcing method. The method comprises the following steps that (1) when a cylinder hole water jacket sand core is subjected to 3D printing, a printing supporting mechanism is additionally arranged at first, the cylinder hole water jacket sand core body is printed, and integral forming of the supporting structure and the cylinder hole water jacket sand core is achieved; (2) baking curing is conducted after printing forming; (3) a sand bone hole is longitudinally drilled in a water foot part of the cylinder hole water jacket sand core body; (4) a sand bone matched with the sand bone hole is selected and inserted into the sand bone hole to be fixed; and (5) the supporting structure in the sand core is removed, and the reinforced cylinder hole water jacket sand core with high precision and quality is obtained. The strength of the 3D printed air cylinder block cylinder hole water jacket sand core can be improved, the reinforced sand core can ensure the effect that the positions and shapes of the layers are not changed by dragging during printing, the forming strength and precision of the sand core are ensured, and the practice effect is good.

Description

technical field [0001] The invention relates to the technical field of 3D printing rapid prototyping preparation, in particular to a sand core reinforcement method for a diesel engine cylinder bore water jacket. technical background [0002] The cylinder block of a diesel engine is one of the core components of the entire diesel engine. The production methods of the cylinder hole water jacket sand core of the cylinder block mainly include traditional mold design and manufacturing and 3D printing technology manufacturing. Due to the advantages of 3D printing technology in many aspects, it is gradually replacing the traditional mold design and manufacturing process. However, since 3D printing is formed by layer-by-layer accumulation, when the current 3D printing technology is used to print the sand core of the cylinder bore water jacket of a diesel engine layer by layer, it is easy to drag displacement between the layers of the cylinder bore water jacket core. , resulting in ...

AI Technical Summary

Problems solved by technology

However, since 3D printing is formed by layer-by-layer accumulation, when the current 3D printing technology is used to print the sand core of the cylinder bore water jacket of a diesel engine layer by layer, it is easy to drag displacement between the layers of the cylinder bore water jacket core. , resulting in low bonding of the sand core, which in turn affects the forming strength and shape accuracy of the sand core; at the same time, during the casting process, the sand core is prone to breakage, resulting in the scrapping of the casting

At present, no good solution has been found for the above technical problems

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