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A water-based graphite lubricating release agent

A technology of graphite lubrication and mold release agent, which is applied in the direction of coating, casting molding equipment, casting molds, etc., which can solve the problems of liquid metal temperature rise, mold wear and shortening service life, etc., to achieve smooth castings and reduce mold Effect of wear and delay of die life

Inactive Publication Date: 2016-10-05
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The temperature rise of liquid metal, coupled with high-pressure and high-speed scouring, is easy to accelerate the wear of the mold, thereby shortening the service life

Method used

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  • A water-based graphite lubricating release agent
  • A water-based graphite lubricating release agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1, a kind of water-based graphite lubricating release agent, its composition and weight are as shown in Table 1, and water-based release agent of the present invention and prior art are respectively diluted to 20% slurry with water, fully stirred Later, it was used in the gravity casting experiment of copper parts. Table 1 examines the influence of different proportions of graphite and inorganic dispersants on the release effect; Table 2 examines the influence of organic dispersants on the release effect.

[0026] Table 1:

[0027]

[0028] Table 2

[0029]

[0030] Table 1 result shows, use mold release agent of the present invention, the proportion of the graphite of mold release agent is 70-80wt%, when inorganic dispersant ratio is 20-30wt%, casting surface is smooth, and mold surface is flat, without mold scale, demoulding Best results. Using the release agent of the prior art, mold sticking, traces and spots on the surface of the casting; mold s...

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Abstract

The invention relates to a lubrication drawing agent for casting nonferrous metals. According to the technical scheme, a water-base graphite lubrication drawing agent is characterized by being prepared from the following components in percentage by weight: 60-95 percent of graphite, 0.1-5 percent of an organic dispersant and 5-35 percent of an inorganic dispersant. The water-base graphite lubrication drawing agent has the advantages of good lubrication drawing performance, no decomposition at high temperature, easiness in demoulding, smoothness in a casting, no smoke, fire, smell and dust in the casting process, lowering abrasion of a mould and prolonging the service life of the mould. In addition, the lubrication drawing agent is low in cost and simple in preparation process.

Description

technical field [0001] The invention relates to a lubricating release agent for non-ferrous metal casting. Background technique [0002] Release agent is an indispensable auxiliary material in casting production. Improper selection and use of release agent will directly or indirectly affect the quality and production efficiency of die castings, and will also have a bad impact on the production environment. [0003] The release agent is a layer of isolation film applied between the casting and the mold to prevent the formed casting from sticking to the mold and make the liquid metal fill smoothly so that the casting can be easily released from the mold while ensuring the surface quality of the casting and the mold intact . In view of the characteristics of high casting molding temperature and strong mold stickiness of high-temperature metal liquid, a good mold release agent should have the following properties: [0004] (1) Good lubrication and mold release performance. Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C3/00
CPCB22C3/00
Inventor 陈石林郭建光
Owner HUNAN UNIV
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