Insulation riser and moulding method thereof
A heat preservation riser and riser neck technology, which is applied to casting molding equipment, casting molds, cores, etc., can solve the problem of difficulty in filling sand compactness at the riser neck, difficulty in controlling the position of the insulation cover in the height direction, Insufficient and other problems, to achieve the effect of accurate riser neck size, compact sand mold, simple and easy method
Active Publication Date: 2013-01-02
江西德辰科技有限公司
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Problems solved by technology
[0004] The present invention provides a new thermal insulation riser sand mold and its molding method to solve the problem of difficulty in controlling the height direction of the thermal insulation cover in the traditional molding method, making it difficult to fill the neck of the riser with sand and insufficient compactness. technical problem
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[0024] The present invention adopts the technical idea of pre-embedding the riser neck core, and first makes a general-purpose core box to make the riser neck core. When performing the molding process, put the prepared core on the riser neck of the mold, then place the riser, put the insulation cover on the upper part of the core on the riser neck, and then start to put sand and tighten it. After the molding sand is solidified, it is taken out, the casting mold and the riser mold are completed, and the insulation riser that is completely consistent with the process parameters is obtained.
[0025] details as follows:
[0026] 1. Make a pair of riser neck core boxes, and prepare riser neck cores. The shape of the riser neck cores is as follows: figure 2 shown. The center of the riser neck core is a cylindrical hole. After several tests, it is determined that the inner diameter of the riser neck core is 1~2mm larger than the maximum outer diameter of the riser neck position...
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The invention provides a new insulation riser sand mold and a moulding method thereof. So technical problems, which exist in moulding processes of traditional moulding methods and can be solved in the invention, are that a riser neck part is difficult to fill sand and the compaction of the sand is not enough because a height, a direction and a putting position of an insulation cover are difficultto control. In the invention, a technical idea of pre-embedding a riser neck even core is adopted. The method comprises the following steps: manufacturing the riser neck even core; putting the manufactured riser neck even core at the riser neck of a die; arranging the riser; arranging the insulation cover on the top of the riser neck even core; introducing and compacting the sand; solidifying thesand; and taking out a casting die and the riser die. So mouding is completed and the insulation riser in complete accordance with technological parameters is obtained. The method allows moulding efficiency to be improved, and riser feeding efficiency to be guaranteed, and has a popularization value to similar casting riser moulding.
Description
technical field [0001] The invention relates to a thermal insulation riser and a molding method thereof. Background technique [0002] The traditional method is, when placing a feeding riser on a certain casting, first make a riser mold, put an insulation cover on the pattern coat, and place the insulation cover and the riser mold directly on the corresponding position to be fed ( pre-set with concave shallow grooves), such as figure 1 , and then put sand, compact sand. Since the point A around the riser neck is empty, during operation, the molding sand around the riser neck at the point A is not easy to compact, and the upper and lower height dimensions of the insulation cover are not easy to control, so that the height direction of the insulation cover and the riser Inconsistent, the molding quality cannot meet the requirements of the process regulations, which affects the feeding efficiency of the thermal insulation riser. [0003] With the traditional method of moldin...
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IPC IPC(8): B22C9/08
Inventor 陆寅鹏
Owner 江西德辰科技有限公司