Compaction-free forming iron chill

Abstract

The invention relates to a compaction-free forming iron chill which comprises a tile-shaped formed bottom and a convex upright part. A plurality of anti-separating grooves are arranged on two lateral surfaces of the convex upright part. The cambered surface shape of the tile-shaped formed bottom is matched with a part contacting with a casting model, and the tile-shaped formed bottom covers 30-60 percent of the area of a casting journal. The compaction-free forming iron chill has simple and reasonable structure; and in the process of placing the iron chill, the tile-shaped formed bottom and the part contacting with the casting mode are assembled together in a zero clearance fit relationship; the supporting action formed by the iron chill and the lateral surface of the model is strong; the iron chill can be automatically fixed without manpower compaction, avoid casting fin and casting burrs, greatly reduce the sand inclusion, remarkably reduce chock defects and improve the liftability of sand mixture. The compaction-free forming iron chill is suitable for producing automatic modeling crankshaft casting.

Description

technical field [0001] The invention relates to a cold iron for casting, in particular to a non-compacting forming cold iron for crankshaft casting. Background technique [0002] We know that in crankshaft casting production, in order to ensure the quality of castings, it is usually necessary to install chilled iron at the hot joints of the main shaft and connecting rod. The chilled iron can improve the effect of the riser and prevent shrinkage and porosity of the castings to ensure the quality of the castings. play a more important role. The structure and shape of the chilled iron in the crankshaft casting production process not only determine the chilling effect of the casting, but also have a greater impact on the labor intensity and production efficiency of the operator. [0003] Usually the crankshaft casting chill iron completely surrounds the journal, and there is a gap between the chill iron and the model boss. In addition, in the process of placing the cold iron, ...

AI Technical Summary

Problems solved by technology

In addition, in the process of placing the cold iron, it needs to be pre-compacted manually with surface sand, which not only increases the labor intensity of the workers, but also affects the work efficiency; because there is a gap between the cold iron and the model, the molding sand is relatively loose, and the casting is easy to form fleshy, flashing, and sand inclusions Casting defects such as; cold iron surrounds the journal, which is easy to cause casting defects such as journal porosity, choking fire, sticking cold iron, etc., and the appearance quality is poor

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