Sand shell for casting and preparation method of sand shell

A technology for casting sand and surface layer, applied in the field of foundry processing, can solve the problems of low casting forming rate, long production cycle, difficult coating and hanging, etc., and achieve the effect of high casting forming rate, low cost and reducing production cycle.

Inactive Publication Date: 2019-05-14
温州恒得晟钛制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the casting sand shells in the prior art have high production cost, long production cycle, difficult coating and hanging, and low casting forming rate.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] This embodiment provides a sand shell for casting which is made of multi-layer paint, and the paint on the surface layer includes ammonium zirconium carbonate, zirconium dioxide and penetrant; the paint except the surface layer all includes silica sol, bauxite powder and penetrant agent. The weight ratio of ammonium zirconium carbonate, zirconium dioxide and penetrating agent in the surface coating is 18:81:1.

[0030] The preparation method comprises the following steps:

[0031] (1) Proportionally weigh ammonium zirconium carbonate, zirconium dioxide powder and dioctyl sulfosuccinate sodium salt with an average particle size of 325 objects, and first carry out the weighing of ammonium zirconium carbonate and zirconium dioxide. Mixing, mixing evenly, adding the weighed dioctyl sulfosuccinate sodium salt while stirring, mixing again, mixing evenly to form a mixed coating;

[0032] (2) Apply the mixed coating obtained in step (1) to the wax pattern at 24°C, then sand, ...

Embodiment 2

[0034] This embodiment provides a sand shell for casting which is made of multi-layer paint, and the paint on the surface layer includes ammonium zirconium carbonate, zirconium dioxide and penetrant; the paint except the surface layer all includes silica sol, bauxite powder and penetrant agent. The penetrating agent is dioctyl sulfosuccinate sodium salt, and the weight ratio of ammonium zirconium carbonate, zirconium dioxide and dioctyl sulfosuccinate sodium salt in the surface coating is 18.2:80.8:1.05. The weight ratio of silica sol, bauxite powder and dioctyl sulfosuccinate sodium salt of the paint except the surface layer is 18:81:1.

[0035] The preparation method comprises the following steps:

[0036] (1) Proportionally weighing ammonium zirconium carbonate, zirconium dioxide and dioctyl sulfosuccinate sodium salt, dioctyl sulfosuccinate sodium salt is passed through a 325 mesh sieve, and the weighed zirconium carbonate Ammonium and the zirconium dioxide are mixed, an...

Embodiment 3

[0039] This embodiment provides a sand shell for casting which is made of multi-layer paint, and the paint on the surface layer includes ammonium zirconium carbonate, zirconium dioxide and penetrant; the paint except the surface layer all includes silica sol, bauxite powder and penetrant agent. The penetrating agent is dioctyl sulfosuccinate sodium salt, and the weight ratio of ammonium zirconium carbonate, zirconium dioxide and dioctyl sulfosuccinate sodium salt in the surface coating is 17.8:81.2:0.95.

[0040] The preparation method comprises the following steps:

[0041] (1) Proportionally weigh ammonium zirconium carbonate, particle size is 325 mesh zirconium dioxide and dioctyl sulfosuccinate sodium salt, first mix the weighed ammonium zirconium carbonate and the zirconium dioxide After mixing evenly, add the weighed dioctyl sulfosuccinate sodium salt while stirring, mix again for 5 minutes, and mix evenly to form a mixed coating with a viscosity of 8-10cps;

[0042] (...

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Abstract

The invention relates to a sand shell for casting and a preparation method of the sand shell. The sand shell for casting is prepared by mixing the raw materials of ammonium zirconium carbonate, zirconium dioxide and a penetrating agent, coating and other technologies. The sand shell has the beneficial effects that the sand shell for casting is simple in preparation, gas permeability is good, performance is stable, viscosity is good, and the cost is low; and a sand component is bound by metal wires and then coating is conducted, and therefore strength of the sand shell can be improved, coatingtimes of the sand shell are reduced, and the preparation cycle of the sand shell is shortened.

Description

technical field [0001] The invention belongs to the technical field of casting processing, and in particular relates to a casting sand shell and a preparation method thereof. Background technique [0002] The casting process with sand shell is a casting method in which a mixture of high-strength thermosetting material silica sand or zircon sand and resin is used to form a thin shell mold and cast to obtain a casting. The casting process with sand shells has the advantages of less equipment investment, small floor space, convenient production, high production efficiency, less sand for casting, less dust and noise on the production site, and thus less pollution to the environment, and the surface finish of the produced castings is high. , High dimensional accuracy, good material performance and so on. [0003] At present, the manufacturing cost of the casting sand shell in the prior art is high, the production cycle is long, the coating is difficult, and the molding rate of c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C3/00B22C9/04
Inventor 王泽
Owner 温州恒得晟钛制品有限公司
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