Sand core manufacturing process and structure of an improved vehicle box

Abstract

The invention discloses a production technology and structure of a modified automobile box sand core, and relates to the technical field of sand core production. The production technology and structure of the modified automobile box sand core aim to solve the problems that complex slender sand core parts produced through existing sand core production technologies are low in structural strength, and produced sand cores are difficult to exhaust. The production technology comprises the steps that molds are prepared; resin sand is added into a sand hopper of a core shooter; shooting and shaping are conducted; curing and shaping are conducted; the molds are opened for cooling sand core parts; a main sand core is hollowed out; a water channel sand core, a small water channel sand core, a lug sand core, a cross-shaped sand core and the main sand core are assembled to form a sand core structure of a box mold, and the small water channel sand core and the water channel sand core in the sand core structure produced through the sand core production technology are connected with the main sand core through sand core bosses separately. The production technology of the modified automobile box sand core is characterized in that by implementing the sand core production technology, the mould-filling density and the compaction density of the sand mould parts can be effectively improved, sand corepart breakage is prevented, the sand core is well shaped, the exhausting effect of the sand core can be effectively improved, and the collapsibility of the sand core can be perfected.

Description

technical field [0001] The invention relates to the technical field of sand core manufacturing, and more specifically relates to a sand core manufacturing process and structure of an improved vehicle box. Background technique [0002] As the emission control of automobile exhaust in various countries in the world becomes more and more strict, the casting upgrade of commercial vehicle exhaust treatment box is an inevitable product. Due to the high efficiency and power requirements of automotive engines in the market, the company focused on improving the fluidity of the metal liquid in the cavity when developing the casting exhaust gas treatment box, and continuously improved the filling materials, metal molds and sand cores. , Customized special casting equipment for vehicles. [0003] After research and development, the vehicle exhaust gas treatment box adopts a semi-sand low-pressure casting process. The sand core is the material used to manufacture the core in the foundry...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the existing sand core manufacturing process produces complex and slender sand core parts with low structural strength and the difficulty of venting the manufactured sand core, the purpose of the present invention is to provide an improved sand core manufacturing process for vehicle boxes And the structure can effectively improve the filling density and compaction strength of each sand mold, prevent the sand core from breaking, the sand core is well formed, and can effectively improve the exhaust effect of the sand core and improve its collapsibility

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