Light vehicle exhaust pipe pouring process

Abstract

The invention discloses a light vehicle exhaust pipe pouring process which is characterized by comprising the following process steps: moving pouring gates from sides to pipe orifice parts in the middle of an exhaust pipe so as to inject molten iron into a cavity from two pipe orifices, discharging gas in the cavity from two pouring channels under the driving action of rising molten iron, and meanwhile, adjusting the gap of core heads timely. By virtue of the tight gap, the molten iron cannot overflow, the core heads are prevented from being sealed, exhausting is facilitated, and flashing iron thorns can be reduced, so that a source of generating air holes of the exhaust pipe is avoided, and the product percent of pass is improved.

Description

technical field [0001] The invention relates to a pouring process equipment, especially in the production process of gray iron castings and ball milled iron castings, and the pouring process of light vehicle exhaust pipes. Background technique [0002] In the current foundry production, first design according to the requirements of technical data, including the metal mold with gate and riser integrated, and use this mold to make sand shell and sand core products that need electric heating of coated sand to complete. [0003] All kinds of semi-finished casting sand molds need to go through artificial shell assembly, core joining and other procedures to complete the finished sand mold products before pouring. Therefore, the products produced by the process need to invest a lot of man-hours, raw materials and electricity costs, the production efficiency is low, the yield is low, the polishing is also troublesome, and the man-hours are consumed. Contents of the invention [0...

AI Technical Summary

Problems solved by technology

Therefore, the products produced by the process need to invest a lot of man-hours, raw materials and electricity costs, the production efficiency is low, the yield is low, the polishing is also troublesome, and the man-hours are consumed.