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Process method for producing large size sculpture through resin sand removable-flask moulding

A technology of boxless molding and process method, applied in the direction of manufacturing tools, casting molding equipment, casting molds, etc., can solve the problems of increased production cost, low production efficiency, and long process cycle, so as to reduce production cost and improve production efficiency , The effect of shortening the operation time

Active Publication Date: 2015-07-15
SHANXI YUDA GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional resin sand molding produces large-scale sculptures by making sand boxes for molding. Since large sculptures are irregular castings, the amount of sand used for sand box molding is generally relatively large, and the process cycle is long, resulting in production Increased cost and low production efficiency

Method used

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Embodiment Construction

[0034] Specific embodiments of the present invention will be described in detail below.

[0035] A method for producing large-scale sculptures with resin sand boxless molding, comprising the following steps:

[0036] (1) Receive a large-scale sculpture model (usually a glass fiber reinforced plastic or plaster model), and after measuring the data, carry out reasonable classification and cutting of the large-scale sculpture model, divide it into several sub-models, reinforce the variable or easily damaged sub-models, and then repair each Each sub-model is cast separately.

[0037] (2) Prepare an outer sand mold of a sub-model, as follows:

[0038] a. Pendulum type and design pouring system: according to the shape of the sub-model, build a wooden brick wall around the sub-model with wooden bricks. The shortest distance between the inner surface of the wooden brick wall and the surface of the sub-model is more than 20cm, that is, the outer sand mold The thickness is above 20cm....

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Abstract

The invention relates to casting process, in particular to a process method for producing large size sculpture through resin sand removable-flask moulding. The method comprises the following technological processes: model receiving, cutting, strengthening, model placing and gating system designing, netty steel frame welding, modeling, mode dissembling, mold assembling, strengthening, pouring, sand cleaning and the like. The method is mainly characterized in that steel frames with different sizes are welded according to the sizes of casting models, and the profile-followed steel frames can be welded according to the different shapes of casting models, so that the steel frames can be reused, and the consumption of resin sand can be greatly reduced during modeling due to the welded profile-followed steel frames; the layer surface of sand is thinner, and the operation time of the whole process is shortened, so that the raw materials are saved, the production efficiency is improved, and the whole production cost is greatly reduced.

Description

technical field [0001] The invention relates to a casting process, in particular to a process method for producing large-scale sculptures with resin sand boxless molding. Background technique [0002] Sand casting is a casting method that produces castings in sand molds. Steel, iron and most non-ferrous alloy castings can be obtained by sand casting. Because the molding materials used in sand casting are cheap and easy to obtain, the casting mold is easy to manufacture, and it can adapt to the single-piece production, batch production and mass production of castings. It has been the basic process in casting production for a long time. [0003] In sand casting, the gating system is a channel opened in the mold by introducing liquid metal into the cavity of the mold. The pouring system includes: ① sprue cup, which accepts the molten metal poured in from the ladle, also known as the outer gate; ② straight gate, which connects the outer gate and the horizontal gate, and introd...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C9/02B22C9/22
Inventor 卫恩胜
Owner SHANXI YUDA GRP
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