Production technology for casting thin-wall cookware through using precoated sand hot box method

A production process and hot core box technology, which is applied in the direction of manufacturing tools, casting molding equipment, molding machines, etc., can solve the problem of the shape, size and quality of cast iron cookware, the serious dust in the manual clay sand production process, and the difficulty in forming thin-walled castings, etc. problems, to achieve the effects of small casting deformation, high yield and low casting cost

Active Publication Date: 2013-01-30
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY +1
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  • Application Information

AI Technical Summary

Problems solved by technology

The following problems exist in the above process: (1) Generally, clay sand is used as molding sand. The clay sand has low strength and unstable size, and it is difficult to guarantee the shape, size and quality of the cast iron cookware produced.
(2) Clay sand has low refractoriness,

Method used

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  • Production technology for casting thin-wall cookware through using precoated sand hot box method
  • Production technology for casting thin-wall cookware through using precoated sand hot box method
  • Production technology for casting thin-wall cookware through using precoated sand hot box method

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Embodiment Construction

[0019] Such as Figure 1-3 Shown, a kind of production technology of coated sand hot core box method casting thin-walled cooker, comprises the following steps:

[0020] Step 1. Make a hot core box mold according to the shape of the cooker. There is a negative pressure structure on the mold, and install the hot core box mold on the core shooter;

[0021] Step 2: Inject the coated sand into the hot core box mold, and make the coated sand solidify and form in the hot core box mold through electric heating;

[0022] Step 3: After the core shooter splits the mold, remove the middle template, and then close the mold;

[0023] Step 4: Start the vacuum source first after closing the mold, and pour the molten iron while the vacuum source draws negative pressure on the core shooter. The gas generated during the pouring process is sucked away by the vacuum source. The vacuum source is preferably a vacuum pump;

[0024] In step five, after the casting is cooled, the mold is divided to obta

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Abstract

The invention discloses a production technology for casting a thin-wall cookware through using a precoated sand hot box method, and relates to the technical field of casting technologies of thin-wall cookware. The production technology comprises the steps of: 1, manufacturing a hot box die according to the shape of the cookware, wherein a negative pressure pumping structure is arranged on the die; and mounting the hot box die on a core shooter; 2, shooting precoated sand into the hot box die, and curing the precoated sand in the hot box die for forming by electrically heating; 3, splicing the die, and removing a die plate in the middle, and then closing the die; 4, pouring molten iron while the negative pressure is pumped after the die is closed; and 5, cooling a casting, and splicing the die to obtain the thin-wall cookware. According to the production technology, the process of pumping the negative pressure is carried out through the core shooter, and the pouring is synchronously carried out at the same time, so that the die does not needed to be removed for pumping the negative pressure and pouring, the formation of the cookware is sped up, and the operation steps are decreased, and therefore, the working efficiency is improved, and benefits are provided for casting the thin-wall cookware.

Description

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Claims

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Application Information

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Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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