Rapid preparing method for coating for gray iron metal mold casting

A metal mold casting and coating technology, applied in casting molding equipment, metal processing equipment, coating, etc., can solve the problems of shortened mold life, poor heat insulation performance, etc., and achieve good uniformity, strong adhesion, and advanced technology Effect

Inactive Publication Date: 2016-04-06
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, the coatings used in gray iron metal mold casting are refractory coatings prepared from bauxite, zircon powder and chromite powder, but the heat insulation performance of these aggregates is poor; the casting temperature of gray iron metal mold casting Between 1300°C and 1400°C, high temperature and thermal fatigue greatly shorten the life of the mold, which requires the coating to have a high melting point and also have excellent heat insulation performance to reduce the high temperature impact of the molten metal on the mold. Currently The coatings used are difficult to meet these technical requirements

Method used

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  • Rapid preparing method for coating for gray iron metal mold casting
  • Rapid preparing method for coating for gray iron metal mold casting
  • Rapid preparing method for coating for gray iron metal mold casting

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Embodiment Construction

[0056] The present invention will be further described below in conjunction with accompanying drawing:

[0057] figure 1 As shown, it is the rolling state diagram of paint for gray iron metal mold casting. The position of each part must be correct, the proportion should be proportioned, and the operations should be performed in sequence.

[0058] Quantities of the chemical substances used in the preparation are determined according to a preset range, with grams and milliliters as measurement units.

[0059] The rolling of the coating slurry for gray iron metal mold casting is carried out on the rolling machine, which is completed in the process of rolling and adding water;

[0060]The rolling machine is vertical, the bottom of the rolling machine is a console 1, the upper part of the console 1 is a lower disc 6, the upper part of the lower disc 6 is an upper disc 7, and the upper part of the upper disc 7 is connected to a rolling motor 8. The top of rolling motor 8 is provid...

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Abstract

The invention relates to a rapid preparing method for a coating for gray iron metal mold casting. Mullite and kieselguhr serve as refractory aggregate, aluminum phosphate and water glass serve as a bonding agent, bentonite and sodium carboxymethylcellulose serve as a suspending agent, deionized water serves as a carrier liquid solvent, and the coating for gray iron metal mold casting is prepared through solution preparing, pulp mixing, stirring, grinding and ageing. The coating is thick liquid and is good in bonding power and good in uniformity and fixing strength. The gas-forming property is 8.36 mL/g, the heat conductivity coefficient is 1.5396 W.m<-1>.K<-1>, and the suspension property is 99.5%. The preparing method is advanced in technology, the technology process is short, the speed is high, data are accurate and full, the material ratio is reasonable, and the rapid preparing method is the advanced preparing method for the coating for gray iron metal mold casting.

Description

technical field [0001] The invention relates to a rapid preparation method of coating for gray iron metal mold casting, which belongs to the technical field of preparation and application of black metal casting auxiliary materials. Background technique [0002] Metal mold casting is an advanced casting process, which has been widely used in the field of non-ferrous metals, but it has been less used in the manufacture of gray iron parts. In recent years, with the improvement of mold life, the gray iron metal mold casting Research has made some progress. [0003] Coatings must be used in metal mold casting to avoid the thermal shock of high-temperature molten metal on the mold during the casting process, thereby prolonging the life of the mold and better ensuring the casting shape, metal uniformity and product quality. [0004] At present, the coatings used in gray iron metal mold casting are refractory coatings prepared from bauxite, zircon powder and chromite powder, but ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C3/00
CPCB22C3/00
Inventor 赵宇宏王萍萍靳玉春侯华刘占凯
Owner ZHONGBEI UNIV
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