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Application technology of novel release agent in centrifugal casting of cylinder liner

A technology of centrifugal casting and application technology, which is applied in the direction of casting molding equipment, casting molds, cores, etc., can solve the problems affecting the quality of castings, dry coatings are easy to agglomerate, etc., to prevent whitening tendency, improve surface processing performance, The effect of refining the metallographic structure

Inactive Publication Date: 2011-05-04
韦加伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the differences in temperature and humidity in the region, dry coatings are suitable for use in the central and western regions, but not suitable for use in the eastern region. Due to the high humidity in the eastern region, dry coatings are easy to agglomerate, which affects the quality of castings

Method used

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Embodiment Construction

[0010] Using the application technology of a new mold release powder of the present invention in cylinder liner centrifugal casting, the centrifugal casting cylinder liner can significantly improve the mechanical properties of the cylinder liner, especially the high proportion of metallographic structure A-type graphite, which is beneficial to the engine Lubricating and oil storage properties are beneficial to improving engine exhaust emissions and prolonging engine life.

[0011] The release powder material is composed of the following components by weight percentage: artificial graphite powder (200 mesh) 70-80%, aluminide (200 mesh) 3-5%, ferrosilicon powder (220 mesh) 1-3%, quartz powder (200 mesh) 4-8%, 75S i powder 2-4%.

[0012] The invention has the following advantages: good heat insulation performance, the thickness of the release powder is only 0.5-0.8mm, and an effective heat insulation layer can be formed between the molten iron and the mold cavity, which prevents ...

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Abstract

The invention relates to an application technology of a novel release agent in the centrifugal casting of a cylinder liner. The release agent has the following material tissue components in percentage by weight: 70-80% of 200-mesh artificial graphite powder, 3-5% of 200-mesh aluminide, 1-3% of 220-mesh ferrosilicon powder, 4-8% of 200-mesh quartz powder and 2-4% of 75 Si powder.

Description

technical field [0001] The invention relates to release powder, in particular to the application technology of a novel release powder in cylinder liner centrifugal casting. Background technique [0002] At present, there are two main types of coatings, one is dry coatings mixed with quartz powder and binders (corn flour, potato flour, asphalt powder); the other is quartz powder plus bentonite, diatomaceous earth, laundry detergent, etc. A water-based paint that is mixed with powder, etc. and water. [0003] The role of the coating is mainly to insulate the heat, prevent the molten iron from directly contacting the inner cavity of the mold, prevent the white structure caused by excessive supercooling, and smoothly push the casting out of the mold cavity. [0004] The coating is applied in the mold cavity and between the molten iron of the cylinder liner. The performance of the coating has a great influence on the quality of the cylinder liner blank, machining allowance, exte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C3/00B22C13/10
Inventor 韦加伟
Owner 韦加伟
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