Automobile flywheel pouring system and pouring method

Abstract

The invention provides an automobile flywheel pouring system and a pouring method thereof which can reduce the reject rate of castings and have a smooth surface. The automobile flywheel pouring system of the present invention comprises a sprue cup, a sprue, a runner, a riser with a riser neck, and an ingate; it also includes a riser neck chill, and the riser neck chill is located at below the riser neck. In the pouring system and pouring method for the automobile flywheel of the present invention, the riser neck cold iron is placed at the riser neck, which can not only make full use of the limited amount of liquid iron feeding of the riser, but also make the riser neck solidify in time, and give full play to the ductile ink. The expansion and self-feeding effect of cast iron graphitization greatly reduces the internal shrinkage cavity and shrinkage porosity defects of the flywheel casting, reduces the reject rate of the flywheel from 15% to less than 5%, and greatly improves the process yield.

Description

technical field [0001] The invention relates to a pouring system and a pouring method, in particular to an automobile flywheel pouring system and a pouring method. Background technique [0002] The flywheel is the key starting part of the automobile engine. It is generally a thick disc. Its weight and balance performance seriously affect the performance of the engine. Therefore, it has certain weight requirements and certain dynamic balance requirements. With the improvement of automobile engine performance requirements, the requirements for flywheel dynamic balance also increase accordingly. [0003] Currently using the automotive flywheel casting system, because the feeding factor is not considered, defects such as shrinkage cavities and shrinkage porosity often appear inside the casting, which makes the average reject rate of the flywheel reach 15%. [0004] In order to solve this problem, cooling iron is generally used in the mold, which can also play a role in cooling....

AI Technical Summary

Problems solved by technology

[0004] In order to solve this problem, cooling iron is generally used in the mold, which can also play a role in cooling. However, for large-area disc parts such as flywheels, it is necessary to use a large or multiple cooling tubes to eliminate internal shrinkage. Iron, this is not economical and increases the difficulty of production process control, and the contact between the cold iron and the casting surface can easily cause the surface of the casting to sag, making the casting scrapped. Edge burrs increase the cleaning process and cleaning workload

Images