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V-method model casting process for casting household appliance base

A casting process and model technology, which is applied in the field of V-method model casting process for casting home appliance bases, can solve the problems that the model cannot be covered, the quality of castings is difficult to guarantee, and the operation efficiency is low, so as to facilitate rapid processing and molding and improve the quality of castings , the effect of good sand quality

Inactive Publication Date: 2017-05-17
马正松
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, not only the operating efficiency is low, but the labor intensity of the workers is high, and the quality of the castings is difficult to guarantee.
After adopting the v-method process for production, the operation efficiency has been greatly improved and the product quality has been improved. However, the shape and structure of the aluminum alloy mold castings in the household appliance industry are complicated. According to the normal V-method model and casting process, the model cannot be coated or removed after molding. model and other issues

Method used

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  • V-method model casting process for casting household appliance base
  • V-method model casting process for casting household appliance base

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A V-method model casting process for casting home appliance bases, the steps are as follows:

[0036] 1. Make the base three-dimensional ( Figure 1-3 As shown) use 3D software for parting operation, the parting surface is selected as the bottom surface, and the separated models are the lower die model 1 and the upper die model 2, of which the upper die model 2 is the inner shape, but for the convenience of modeling Operation, therefore, the upper die model 2 should be made into a convex shape with the parting surface as the zero point, so that the lower die model 1 and upper die model 2 models are both convex.

[0037] 2. Send the output of the lower mold model 1 and the upper mold model 2 to the model processing workshop for processing, and the obtained casting model is to be cast.

[0038] 3. Place the upper mold model 2 on the vacuum molding table panel 3 ( Figure 4 , 5 As shown), the negative pressure is controlled at 0.05Mpa. After baking film and film coverin...

Embodiment 2

[0043] A V-method model casting process for casting home appliance bases, the steps are as follows:

[0044] 1. Make the base three-dimensional ( Figure 1-3 As shown) use 3D software for parting operation, the parting surface is selected as the bottom surface, and the separated models are the lower die model 1 and the upper die model 2, of which the upper die model 2 is the inner shape, but for the convenience of modeling Operation, therefore, the upper die model 2 should be made into a convex shape with the parting surface as the zero point, so that the lower die model 1 and upper die model 2 models are both convex.

[0045] 2. Send the output of the lower mold model 1 and the upper mold model 2 to the model processing workshop for processing, and the obtained casting model is to be cast.

[0046] 3. Place the upper mold model 2 on the vacuum molding table panel 3 ( Figure 4 , 5As shown), the negative pressure is controlled at 0.03Mpa. After baking film and film covering...

Embodiment 3

[0051] A V-method model casting process for casting home appliance bases, the steps are as follows:

[0052] 1. Make the base three-dimensional ( Figure 1-3 As shown) use 3D software to carry out the mold splitting operation, choose the mold parting surface as the bottom surface, and the separated models are the lower mold model 1 and the upper mold model 2, and the upper mold model 2 is the inner shape, but for the convenience of modeling Operation, therefore, the upper die model 2 should be made into a convex shape with the parting surface as the zero point, so that the lower die model 1 and upper die model 2 models are both convex.

[0053] 2. Send the output of the lower mold model 1 and the upper mold model 2 to the model processing workshop for processing, and the obtained casting model is to be cast.

[0054] The materials used in the above-mentioned casting models (lower mold model 1 and upper mold model 2) are made of the following components in parts by weight: 100...

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Abstract

The invention discloses a V-method model casting process for casting a household appliance base. Dry silica sand V-method modeling is adopted, modeling negative pressure is controlled to range from 0.03 Mpa to 0.05 Mpa, an aluminum alloy material is adopted in a base casting, and the pouring temperature is 690 DEG C; an inner pre-buried water channel is a round pipe of a red copper or stainless steel material, and the surface of a water pipe is coated with a high temperature resisting coating; after a V-method model is subjected to optimization design, fast model replacement and fast model processing forming are facilitated, and the process is suitable for small-batch multi-variety production modes; and according to the structure of the V-method model, an inner mold and an outer mold are both in a convex type, and by means of the method, mold taking is facilitated after modeling, and a process that a concave mold needs a matching plate is solved. By means of the adopted secondary modeling method, after secondary modeling, a convex pouring sand mould is obtained and can be combined with a concave pouring cavity for pouring.

Description

technical field [0001] The invention relates to the field of casting technology, in particular to a V-method model casting process for casting home appliance bases. Background technique [0002] V-method vacuum molding is the third-generation molding method after mechanical molding and chemical molding. The specific process is to prepare a mold with a pumping chamber. There are vent holes on the mold that can be directly connected to the vacuum tube of the pumping chamber. The EVA film is placed under the film dryer and heated to a softened state. Through the air holes on the mold, the vacuum is applied to the softened plastic film to make it closely adhere to the mold. The negative pressure sand box is placed on the mold, and the sand box is covered. The dry sand is filled, and the dry sand obtains the maximum density through the vibrating equipment. The top of the sand mold is covered with a layer of sealing film, and the sand box is evacuated to cause a pressure differenc...

Claims

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Application Information

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IPC IPC(8): B22C9/03B22C9/22
CPCB22C9/03B22C9/22
Inventor 马正松
Owner 马正松
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