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Casting process of cast iron grinding ball

A casting process, a technology for cast iron grinding balls, applied in the field of casting process of cast iron grinding balls, can solve the problems affecting the impact resistance of cast iron grinding balls, rapid cooling and solidification, shrinkage of the core of the sphere, etc., and achieve the effect of eliminating shrinkage porosity defects.

Inactive Publication Date: 2015-10-21
邓卓伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the rapid cooling and solidification of the molten iron in the metal mold, the molten iron at the sprue gate cannot effectively feed the sphere in the cavity, and the center of the sphere is prone to shrinkage, which affects the impact resistance of the cast iron grinding ball

Method used

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Embodiment Construction

[0006] The present invention will be further described below in conjunction with specific embodiment:

[0007] A casting process for cast iron grinding balls, comprising the following steps:

[0008] First, prepare the insulation sleeve as the sprue mouth with the insulation refractory material. The insulation refractory material is made of quartz powder. Since water and adhesive are added to the insulation sleeve, the insulation sleeve needs to be dried; the dried insulation sleeve is placed on the metal Pouring is carried out in the sprue of the mold, and the molten iron fills the cavity and insulation cover during pouring; the mold can be ejected after the molten iron is completely solidified.

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Abstract

The invention discloses a casting process of a cast iron grinding ball. The casting process includes the following steps that 1, an insulating sleeve serving as a runner opening is made of an insulating refractory material, and the insulating sleeve is dried for standby application; 2, the dried insulating sleeve is arranged in a sprue of a metal die before pouring is conducted; 3, pouring is conducted, wherein pouring can be stopped when a cavity and the insulating sleeve are filled with molten iron; 4, drawing is conducted, wherein drawing can be conducted when the molten iron is completely solidified. By the adoption of the process, the hardness of the cast iron grinding ball can be guaranteed, and the defect of shrinkage porosity of the core of a sphere can be eliminated.

Description

technical field [0001] The invention relates to a casting process of cast iron grinding balls. Background technique [0002] Cast iron grinding balls are widely used in the crushing and grinding of various ores. In order to improve the wear resistance of cast iron grinding balls, metal molds are generally used for casting, and the hardness of cast iron grinding balls is increased through the chilling effect of metal molds. However, due to the rapid cooling and solidification of the molten iron in the metal mold, the molten iron at the sprue gate cannot effectively feed the sphere in the cavity, and the center of the sphere is prone to shrinkage, which affects the impact resistance of the cast iron grinding ball. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a casting process of cast iron grinding balls, which can not only ensure the hardness of the cast iron grinding balls, but also eliminate shrinkage defects ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/08B22C9/22
Inventor 邓卓伟
Owner 邓卓伟
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