"Point" pouring process system for ductile iron castings

A process system and iron casting technology, applied in the direction of casting molds, casting mold components, manufacturing tools, etc., can solve the problems of no profit and insufficient products, and achieve the effects of eliminating shrinkage waste products, increasing temperature, and strengthening the rigidity of casting molds

Active Publication Date: 2017-07-25
山东汇金股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

According to the analysis, it is not enough to use three risers around the flange to feed the flange and its root. From the perspective of normal thinking, adding another riser to shorten the feeding distance may be able to solve the problem. problem, but in this way, the process yield rate will drop to less than 40%, and the product will have no profit at all

Method used

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  • "Point" pouring process system for ductile iron castings
  • "Point" pouring process system for ductile iron castings

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Embodiment Construction

[0031] Related technical content not mentioned below can all adopt or learn from the existing technology.

[0032] In order to enable those skilled in the art to better understand the technical solutions in this application, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the drawings in the embodiments of this application. Obviously, the described The embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work should fall within the protection scope of this application.

[0033] A "point-type" pouring device for ductile iron parts, including a pouring device. The pouring device includes a sprue cup, a sprue, and a cross runner that are arranged from top to bottom; the bottom of the cross runner is a riser socket , T...

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Abstract

The invention relates to a point-type pouring process system for a nodular iron casting. According to the invention, a sprue, a horizontal runner, an ingate, a riser and riser neck are integrated into a functional body through optimization and concentration, and the functional body exerts multiple effects; i.e., the functional body can be used as the sprue for pouring and exerts buffering, filtering, pouring guiding, slag collecting and feeding effects and other effects, thereby realizing multiple purposes of the functional body. Moreover, through combined design of a chiller and a pad, a progressively-solidifying feeding channel is formed. Thus, the point-type pouring process system is constructed.

Description

Technical field [0001] The invention relates to a "point type" pouring process system for ductile iron parts. Background technique [0002] The way of solidification of ductile cast iron is that the inside and outside are solidified almost at the same time, so it is easy to form microscopic shrinkage; at the same time, the solidification of the casting determines that the solidified layer on the surface of the casting is very thin, so that a solidified crust of sufficient strength cannot be established, plus eutectic The solidification time is longer, the graphitization expansion of the eutectic transformation is larger, and the mold wall moves outside when the mold stiffness is insufficient, which causes the shrinkage cavity and shrinkage porosity to further increase. According to statistics, the volume of shrinkage and porosity of ductile iron is larger than that of ordinary gray cast iron, white cast iron and carbon steel. The volume of shrinkage and porosity of ductile iron i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C9/08B22D27/04
CPCB22C9/08B22D27/04
Inventor 孔庆柱许文青
Owner 山东汇金股份有限公司
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