Forming method of flame-retarding insulating riser

A technology of flame retardant heat preservation and molding method, which can be used in casting molding equipment, molds, cores, etc., and can solve problems such as poor heat preservation

Inactive Publication Date: 2016-05-04
HARBIN FUTING CHUANGFU MACHINERY MFG CO LTD
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0005] In order to solve the above problems, the present invention provides a method for forming a flame-retardant and heat-insulating riser. This method solves the problems of poor heat preservation and preventing the burning of heat-generating materials in the existing riser, and has good flame-retardant and heat-retaining effects. The solidification time of molten metal in the riser is prolonged, thereby reducing casting defects such as shrinkage cavity and porosity of castings, and improving the yield

Method used

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  • Forming method of flame-retarding insulating riser

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Embodiment 1

[0030] see figure 1, a method for forming a flame-retardant thermal insulation riser, which comprises the following steps:

[0031] 1) According to the shape requirements of the riser, the inner mold, outer mold and filler template are made: the top of the inner mold is closed, and after closing with the outer mold, a cylindrical cavity is formed. The height and the outer diameter are the same; the size of the filler template is between the size of the inner mold and the outer mold, the top of the filler template is open, and the top of the outer mold is provided with a circular sand injection port;

[0032] 2) Preparation of thermal insulation filler with flame retardant effect:

[0033] a. Weigh 20-30 parts of diatomite, 5-10 parts of polyphenylene balls, 12-15 parts of magnesia powder, 15-20 parts of quartz sand, 10-15 parts of Aluminum silicate fiber, 15-20 parts of modified magnesium aluminum alloy powder, 8-10 parts of iron oxide powder, 2-5 parts of sodium nitrate, 1-...

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Abstract

The invention relates to a forming method of a flame-retarding insulating riser. The method includes the steps of manufacturing a mold plate, preparing insulating filler with a flame-retarding effect, putting the filler into the mold plate to obtain a riser prototype, dismounting a mold to obtain a wet riser, and drying the wet riser to form the flame-retarding insulating riser. According to the method, the problem that an existing riser is poor in insulation is solved, combustion of heating materials is prevented, the flame-retarding insulating riser has a good flame retarding effect and an insulating function, and the solidification time of molten metal in the riser is prolonged. Thus, the casting defects such as shrinkage cavities and shrinkage porosity of castings are reduced, and the yield is increased.

Description

technical field [0001] The invention belongs to the field of casting, and in particular relates to a molding method of a flame-retardant and heat-preserving riser. Background technique [0002] In metal casting, risers are generally used for the thicker and larger parts of the casting and hot node parts according to the structural characteristics of the casting, so that the casting parts are fed by the molten metal in the riser. A riser is a supplementary part added to the top or side of a casting just to avoid casting defects. In the casting mold, the cavity of the riser is a cavity for storing liquid metal. When the casting is formed, the metal is supplied to prevent shrinkage, shrinkage, exhaust and slag collection. The main function of the riser is to replenish shrink. Risers with different functions have different shapes, sizes and opening positions. [0003] In the production process of high-nickel and heat-resistant steel casting products such as exhaust pipes and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/08B22C1/02
CPCB22C1/02B22C9/088
Inventor 杨庭彰
Owner HARBIN FUTING CHUANGFU MACHINERY MFG CO LTD
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