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Preparation method of pattern for v-method molding

A pattern and cavity technology, applied in the field of pattern preparation, can solve the problems of difficult process, long molding cycle, consumption of wood resources, etc., and achieve the effect of simplifying the process, reducing the production cycle, and saving wood resources

Active Publication Date: 2015-12-30
BEIJING NAT INNOVATION INST OF LIGHTWEIGHT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the patterns used in V-method modeling are wooden molds, which not only consume a large amount of non-renewable wood resources, but also have a long mold-making cycle and difficult craftsmanship

Method used

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  • Preparation method of pattern for v-method molding
  • Preparation method of pattern for v-method molding

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preparation example Construction

[0019] Such as figure 1 As shown, according to an embodiment of the present invention, a method for preparing a pattern for V-method molding is provided, comprising the following steps:

[0020] S100, preparing gypsum slurry according to a predetermined ratio; and

[0021] S200, using the prepared gypsum slurry to obtain a pattern for V-method modeling.

[0022] The present invention uses gypsum as a raw material instead of wood or metal to prepare patterns for V-method modeling, avoiding the waste of wood resources, and the production and processing of gypsum molds is simpler and more convenient than wood or metal molds.

[0023] see in conjunction figure 2 , wherein S200, using the prepared gypsum slurry to obtain the pattern for V method modeling specifically includes the following steps:

[0024] First, stir the prepared gypsum slurry evenly and slowly pour it into the cavity of the mold. Metal needles are pre-embedded in the cavity. The diameter of the metal needles i...

Embodiment 1

[0037] The preparation method of the pattern that V method molding is used comprises the following steps:

[0038] Step 1. Proportioning 100 parts by weight of flue gas desulfurization gypsum, 51 parts by weight of water, 0.3 parts by weight of water reducer, 0.01 parts by weight of retarder and 0.3 parts by weight of defoamer to obtain gypsum slurry, The water reducer used is MELMENTF15G melamine sulfonated melamine polycondensate produced by BASF, Germany, the retarder is citric acid, and the defoamer is AGITANP8850 powder defoamer produced by MUNZING-GHEMIE, Germany.

[0039] Step 2. Stir the prepared gypsum slurry evenly and pour it into the mold cavity with metal needles embedded in it. The diameter of the metal needles is 0.5 mm and the distance between them is 10 mm.

[0040] Step 3. When the gypsum slurry is initially set, quickly pull out the metal needle to form a vent hole. After 24 hours of natural drying in the air, put it in a blast drying oven to dry to constant...

Embodiment 2

[0045] The preparation method of the pattern that V method molding is used comprises the following steps:

[0046] Step 1. Proportioning 100 parts by weight of phosphogypsum, 53 parts by weight of an aqueous silica sol solution, 0.3 parts by weight of a water reducer, 0.01 parts by weight of a retarder and 0.3 parts by weight of a defoamer to obtain a gypsum slurry, The water reducer used is MELMENTF15G melamine sulfonated melamine polycondensate produced by BASF, Germany, the retarder is citric acid, and the defoamer is AGITANP8850 powder defoamer produced by MUNZING-GHEMIE, Germany.

[0047] Step 2. Stir the prepared gypsum slurry evenly and pour it into the mold cavity with metal needles embedded in it. The diameter of the metal needles is 1 mm and the distance between them is 15 mm.

[0048] Step 3. When the gypsum slurry is initially set, quickly pull out the metal needle to form a vent hole. After 20 hours of natural drying in the air, put it in a blast drying oven to dr...

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Abstract

The invention provides a preparation method of a model for V-process modeling. The preparation method of the model for V-process modeling comprises the steps of preparing gypsum slurry according to preset proportions; using the prepared gypsum slurry to obtain the model for V-process modeling. By adopting the technical scheme provided by the invention, the resources can be saved and the preparation process can be simplified.

Description

technical field [0001] The invention relates to the field of model manufacturing, in particular to a method for preparing a pattern for V-method modeling. Background technique [0002] The V-method modeling that emerged in the 1970s uses plastic film to vacuumize dry sand. Because no binder is used in the molding process, the sand falling is simple, which minimizes the consumption of molding materials, reduces waste sand, improves the surface quality and precision of castings, and reduces the production energy consumption of castings. It is a prospect. Broad casting process. However, most of the patterns used in V-method modeling are wooden molds, which not only consume a large amount of non-renewable wood resources, but also have a long mold-making cycle and difficult craftsmanship. Contents of the invention [0003] The invention aims to provide a method for preparing a pattern for V-method modeling, which can save resources and simplify the preparation process. [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C9/03B22C1/02B22C9/12
Inventor 单忠德王振楠王永威戎文娟战丽
Owner BEIJING NAT INNOVATION INST OF LIGHTWEIGHT LTD
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