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Negative-pressure airflow expendable pattern based energy-saving and effect-enhancing casting process

A casting process and lost foam technology, applied in the field of energy-saving and efficiency-enhancing casting processes, can solve the problems of low degree of automation, poor operating conditions, and high production costs, and achieve the effects of good product quality, less mold investment and low cost.

Inactive Publication Date: 2013-04-17
渠县金城合金铸业有限公司
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Problems solved by technology

[0003] In view of the above prior art, the purpose of the present invention is to provide a casting process based on negative pressure air flow lost foam casting technology with energy saving, emission reduction and high production efficiency, which aims to solve the problem of the existing casting process of iron castings and steel castings. High energy consumption, high production cost, low degree of automation, poor operating conditions, serious technical problems of environmental pollution

Method used

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Embodiment Construction

[0029] The present invention will be further described below in combination with specific embodiments.

[0030] An energy-saving and efficiency-enhancing casting process based on negative-pressure air-flow lost foam casting technology, comprising the following steps: step 1, making foam plastic gasification molds; step 2, forming molds that cannot be foamed as a whole The required molds are dried after the molds are combined; Step 3, the surface of the foam plastic gasification mold is coated with refractory paint and then dried again; Step 4, the special sand box is placed on the three-dimensional vibrating table; Step 5, filled The bottom sand is vibrated and scraped flat; step six, put the dried foam-plastic gasification mold on the bottom sand, divide it into sand filling according to the process requirements, and scrape the box mouth after automatic vibration for a certain period of time; step seven, use plastic film Cover the mouth of the sand box, put the sprue cup, and...

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Abstract

The invention discloses a negative-pressure airflow expendable pattern based energy-saving and effect-enhancing casting process, which relates to the technical field of casting. The casting process comprises the main steps of die preparation, automatic pouring, molding sand processing, and the like. Casting products produced by using the casting process disclosed by the invention are good in quality and low in cost; the size precision is high, the surface is smooth, the cleaning is reduced, and the machining amount is saved; internal defects are greatly reduced, and the texture is compact; and an effect of large-scale and high-volume production can be achieved. Due to the environmental-friendly automated flow line production, the operating environment can be greatly improved, the labor intensity can be reduced, and the energy consumption can be reduced.

Description

technical field [0001] The invention relates to the field of casting technology, in particular to an energy-saving and efficiency-enhancing casting process based on negative pressure airflow lost foam. Background technique [0002] At present, most foundry enterprises adopt carbon dioxide water glass sand quick-drying molding production process when casting casting products. This production process uses coke as fuel and is smelted in a φ650mm cupola. A large amount of smoke will be generated during smelting. After the pouring is completed, After the sand box is cooled, take out the casting product. Since the water glass sand is easy to agglomerate during pouring, it must be crushed by a crusher, which will generate a lot of dust, and the sand cleaning of the product is completely manual, and a large amount of dust and dust will be generated during sand cleaning. Noisy and labor intensive. After sand cleaning, the casting products are annealed and quenched through the coal-fi...

Claims

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Application Information

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IPC IPC(8): B22C9/04
Inventor 陈伟
Owner 渠县金城合金铸业有限公司
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