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A method for detecting the inner cavity of a sand mold
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A sand mold and detection method technology, applied in the field of foundry supplies, can solve the problems of increasing production cost, inability to detect the inner cavity of the sand mold in advance, waste of resources, etc., and achieves the effects of saving production cost, good promotion and use, and low cost.
Active Publication Date: 2016-01-20
蚌埠启邦科技信息咨询有限公司
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Problems solved by technology
[0009] Aiming at the problem that the inner cavity of the sand mold cannot be detected in advance in the prior art, and the defect can only be found after the product is produced, resulting in a waste of resources and increasing production costs, the invention provides a method for detecting the inner cavity of the sand mold, which has low energy consumption. Cost of testing whether the mold is qualified
Method used
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Embodiment 1
[0035] A method for detecting the inner cavity of a sand mold, first preparing a detection agent, and the steps for preparing the detection agent are:
[0036] (A) Weigh 45 parts of butyl rubber and 10 parts of starch in proportion and add them to the blending kettle with stirring device, and stir thoroughly;
[0037] (B) After stirring for 50 minutes, add 13 parts of hydrogenated rosin glycerides, 15 parts of polyvinyl acetate, and 25 parts of paraffin into the blending kettle and stir for 20-45 minutes. Keep warm at 65°C 30min;
[0038] (C) Insulate the mixture in step (B) at 40°C, then add 4 parts of corn syrup, 6 parts of carrageenan and 21 parts of agar, mix well and disperse evenly, and then the cavity space test can be obtained agent. The prepared cavity space detection agent is solid at a room temperature of 25°C.
[0039] The concrete detection of this method, a kind of detection method of the inner cavity of sand mold, its steps are:
[0040] (A) Heat the cavity ...
Embodiment 2
[0045] With embodiment 1, the difference is the content of each substance: 30 parts of butyl rubber, 5 parts of starch, 8 parts of hydrogenated rosin glycerides, 10 parts of polyvinyl acetate, 20 parts of paraffin, 1 part of corn syrup, 2 parts of carrageenan 14 parts of agar, 14 parts of agar, after stirring for 30-60 minutes in step (B), heat to 30-45 °C, add 10 parts of hydrogenated rosin glyceride, 13 parts of polyvinyl acetate, and 22 parts of paraffin into the blending kettle Stir in medium temperature for 20-45min, keep warm for 30min at 50°C. At the same time, in step (B), several iron wires are added from the pouring port to the inner cavity during the pouring process. It is more beneficial to pull out the molded cavity detection agent.
Embodiment 3
[0047] With embodiment 1, the difference is the content of each substance: 38 parts of butyl rubber, 7 parts of starch, 10 parts of hydrogenated rosin glycerides, 13 parts of polyvinyl acetate, 23 parts of paraffin, 2 parts of corn syrup, 4 parts of carrageenan parts, 17 parts of agar, after stirring for 35 minutes in step (B), 10 parts of hydrogenated rosin glycerides, 13 parts of polyvinyl acetate, and 22 parts of paraffin were added to the blending kettle in turn and stirred, and the stirring time was 20- 45min, keep warm for 30min at 80°C.
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Abstract
The invention discloses a method for detecting the inner cavity of a sand mold, which belongs to the field of foundry supplies. The steps are: (A) heating the cavity detection agent in the solid state to 45°C to make it into a liquid state, and at the same time heating the sand mold, the temperature of the sand mold is 340-50°C; (B) the step ( A) The cavity detection agent that has become a liquid state is poured into the inner cavity of the sand mold that has been heated to fill the cavity; (C) The cavity detection agent and the sand mold are cooled to 30-35°C to become a gel shape, pull out the formed cavity detection agent from the sand mold from the pouring port of the sand mold; (D) perform visual inspection on the formed cavity detection agent. The invention is mainly used for the detection of the inner cavity of the sand mold, which can detect the inner cavity of the sand mold before casting the sand mold, effectively avoiding the production of unqualified sand molds due to damage to the inner cavity of the sand mold, saving casting costs, and ensuring the casting of sand molds the quality of.
Description
technical field [0001] The invention belongs to the field of foundry supplies, and in particular relates to a detection method for an inner cavity of a sand mold. Background technique [0002] Casting is the process of pouring smelted metal liquid into the mold, cooling and solidifying to obtain the required shape and performance of the parts. Casting is a common manufacturing method. Its advantages are: low manufacturing cost, high process flexibility, complex shapes and large castings can be obtained, and it occupies a large proportion in machinery manufacturing, such as 60-80% for machine tools, 25% for automobiles, and 50-60% for tractors. %. [0003] Casting is an ancient manufacturing method that can be traced back 6,000 years in our country. With the development of industrial technology, the quality of large-scale castings directly affects the quality of products. Therefore, casting plays an important role in the machinery manufacturing industry. The development o...
Claims
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Application Information
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