Gravity Tilt Casting Sprue Basin

Abstract

A gravity tilting casting sprue basin, comprising a sprue basin body, the sprue basin body includes a bottom of the body and a side wall extending outward along the edge of the bottom of the body; the sprue basin body is divided into The liquid inlet area, the liquid holding area and the gate; the bottom of the body is correspondingly divided into the bottom of the liquid inlet area, the bottom of the liquid holding area and the bottom of the gate which are smoothly connected; the bottom of the liquid inlet area is an impact slope. The invention provides a gravity tilting casting sprue basin capable of improving the flow characteristics of molten metal in the sprue basin and realizing steady pouring of molten metal.

Description

technical field [0001] The invention belongs to the technical field of casting mold structure design, and relates to a gravity tilting casting sprue basin. Background technique [0002] There are generally two types of sprue basins for gravity tilt casting: [0003] The first one is the gravity tilting pouring machine thermal insulation sprue cup proposed by Harbin Dongan Automobile Co., Ltd., and its patent number is 201220755199.5. The sprue cup is made of thin steel double-layer steel plates welded into the sprue cup, and the hollow layer is filled with thermal insulation materials. This type of sprue cup has good thermal insulation, but the junction between the sprue cup and the mold cannot be smoothly transitioned, and the molten metal flow is not stable enough when it enters the cavity, and it is easy to splash and generate oxidized slag inclusions, forming oxidized slag inclusion defects in castings. Greatly reduced the pass rate of the product. [0004] The second...

AI Technical Summary

Problems solved by technology

This type of sprue cup has good thermal insulation, but the junction between the sprue cup and the mold cannot be smoothly transitioned, and the molten metal flow is not stable enough when it enters the cavity, and it is easy to splash and generate oxidized slag inclusions, forming oxidized slag inclusion defects in castings. Greatly reduced the pass rate of the product

[0004] The second sprue cup type, such as the cross-section controllable sprue cup proposed by Wenzhou Ruiming Co., Ltd., has an application number of 201210443819.6. The wall thickness of this cast iron sprue cup is about 15mm, and its heat storage capacity is good. The gate section of the molten metal entering the cavity is fixed, but the sprue cup filter is not easy to fix, and some oxidized inclusions are easy to flow into the cavity from the side of the filter during the tilting process, resulting in slag inclusion defects in the product and reducing Product pass rate

In addition, the baffle plate of the control section on the sprue cup is fixed and cannot be adjusted according to the needs of the process. At the same time, the oxidized inclusions remaining near the gate of the sprue cup after pouring are difficult to clean

In addition, the baffle is made of steel, and the contact between the baffle and the molten aluminum will easily increase the iron content of the molten metal, resulting in unqualified chemical composition of the product.

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