Novel heat insulation multilayer coating for common medium carbon steel casting in metal casting production

A metal mold casting and multi-layer coating technology, which is applied in the field of casting coatings, can solve the problems of low service life and achieve the effect of improving service life and high surface strength

Inactive Publication Date: 2013-04-03
LIAONING INST OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In foreign countries, water-cooled metal molds are generally used to cast steel castings, but because the metal mold is subjected to strong cooling and heating, its service life is generally low

Method used

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  • Novel heat insulation multilayer coating for common medium carbon steel casting in metal casting production
  • Novel heat insulation multilayer coating for common medium carbon steel casting in metal casting production

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Embodiment Construction

[0026] In order to deepen the understanding of the present invention, the present invention will be further described below in conjunction with examples, which are only used to explain the present invention, and do not constitute a limitation to the protection scope of the present invention.

[0027] A heat-insulating multi-layer coating that can be used for metal mold casting to produce ordinary medium-carbon steel castings. The primer of the coating is composed of the following components in terms of mass percentages: Jilin diatomite 1800g, lithium-based bentonite 700g, silica sol 500g, fat Alcohol polyoxyethylene ether (JFC) 100g, water 6900g. The surface coating consists of the following components in terms of mass percentage: 1700g of zircon powder, 600g of lithium bentonite, 400g of silica sol, 100g of fatty alcohol polyoxyethylene ether (JFC), and 7200g of ethanol.

[0028] The coatings are prepared separately 12 hours before use. According to the formula, pour the soli...

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Abstract

The invention discloses a novel heat insulation multilayer coating for common medium carbon steel casting in metal casting production and a using method thereof. The novel heat insulation multilayer coating is characterized in that a technology for coating the multilayer coating on the surface of a metal cavity is innovatively adopted, the coating layer consists of a bottom coating and a surface coating, wherein the bottom layer adopts a coating with excellent heat insulation performance; and the surface layer adopts a coating with high refractoriness and high chemical burnt-on sand resistance. The novel heat insulation multilayer coating has the advantages that the requirements on good heat insulation effect and excellent chemical burnt-on sand resistance in the process of metal casting production of the common medium carbon steel casting can be simultaneously met, the defects that the molten steel has short run, cold shut, crack and the like in a metal mold due to high cooling speed are overcome, and the problem that the casting is difficult to clean and machine due to frequent surface chemical and physical sand adhesion of the steel casting is solved. The service life of the metal mold is prolonged.

Description

technical field [0001] The present invention relates to a coating for casting and its application method, in particular to a coating for metal mold casting and its application method, in particular to a metal mold used to produce ordinary medium carbon steel castings by metal mold casting Paint applied. Background technique [0002] Metal mold casting is characterized by stable quality of castings, high dimensional accuracy (generally CT7-9 grade), small casting slope and machining allowance, and can save 15% to 30% of liquid metal consumption compared with sand casting. Research and develop new metal mold casting coatings, improve the service life of metal molds, and meet my country's requirements for low-carbon, environmentally friendly, and economical production of casting production. [0003] At present, in the production of steel castings by metal mold casting in my country, single-layer coatings with single performance are generally used, such as refractory powders wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C3/00
Inventor 刘志明吕光哲赵岩刘德慧周欣刘研
Owner LIAONING INST OF SCI & TECH
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