Gasoline engine aluminum piston mold pouring system

Abstract

The invention relates to a gasoline engine aluminum piston mold pouring system, and belongs to the technical field of piston machining. A system body comprises an outer mold upper block, an outer moldlower block, a split direct runner and a split cross runner. The outer mold upper block and the outer mold lower block are vertically combined together, the split direct runner and the split cross runner are independently arranged unit modules, and the placement positions of the split direct runner and the split cross runner are formed by grooving the outer mold upper block and the outer mold lower block. The system body further comprises a first sprue cup and a second sprue cup, the first sprue cup and the second sprue cup are arranged on the upper portion of the outer mold upper block, thefirst sprue cup communicates with the split direct runner, and the second sprue cup communicates with the split cross runner. Runner replacing or correcting time can be saved, casting production efficiency can be improved, and meanwhile maintenance of a mold is easier and more convenient. Modular machining and producing of the mold can be achieved, so that the mold is easy and convenient to machine, the mold manufacturing period is shortened, and the mold machining cost is reduced.

Description

technical field [0001] The invention relates to a pouring system for an aluminum piston mold of a gasoline engine, belonging to the technical field of piston processing. Background technique [0002] With the continuous development of engine technology, higher and higher requirements are put forward for high explosion pressure, high lift power, low emission and low fuel consumption. At the same time, the quality requirements for pistons are getting higher and higher. The level and quality of its casting process will directly affect the competitiveness and manufacturing cost of aluminum piston products. At present, the gating system for aluminum piston molds adopts an integrated structure, which is very troublesome for the maintenance of the mold. [0003] At present, most of the aluminum piston mold gating systems are "improved" after digestion and absorption on the basis of the "imported" gating system. The improved gating system is designed with a small riser above the ...

AI Technical Summary

Problems solved by technology

The gating system is integrated with the outer mold. If the gating system needs to be changed or replaced, the entire mold must be modified. At the same time, it is not easy to control the defects such as shrinkage porosity, shrinkage cavity, and slag inclusions on the piston blank, which leads to mold failure. The "safety factor" is low, and there are certain risks

Generally speaking, there are two main problems in the current aluminum piston mold casting system production: one is low processing efficiency and slow replacement speed, and the integrated processing of the outer mold runner is time-consuming and laborious, and it is impossible to divide and cooperate; the other is the low "safety factor" of the mold , The shrinkage and porosity defects of the piston outer circle are not easy to control, and the integration of the runners of the outer mold cannot guarantee the order of solidification

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