Paper pouring channel tube for casting and shaping technique thereof

Abstract

The invention relates to a paper pouring channel pipe for forging, which is made of waste paper pulp, sintered filling materials, binding materials, reinforcing agent and moisture-proof agent materials. The new concepts and mechanisms completely different from the prior art are applied to the paper pouring channel pipe, namely the pouring channel pipe is not made of the prior used refractory materials such as pottery, porcelain and the like, and non-fireproof paper pulp fibers are taken as a main component which is added with the sintered filling materials and the like, carbonized and sintered under the using conditions of high temperature and oxygen deficiency to form a carbon sinter with high fire resistance degree and the paper pouring channel pipe which achieves the molten iron scouring resistance and fire resistance degree capable of meeting the current forging process requirements. The paper pouring channel pipe has the advantages of regenerative resource utilization, no forging, energy conservation, environment pollution reduction, socket joint, no sand leakage, convenient use, little dust during cutting, light weight, little resource consumption, no easy damage at normal temperature, crispness after high temperature treatment, easy stripping, easy cleaning, little hard solid waste after pouring, abrasion reduction of a sand regenerating device, improvement on the quality of regenerated sand, reduction on the defective index of forged pieces, no carburization problem for the forged pieces, and the like.

Description

technical field [0001] The invention belongs to casting auxiliary materials in the metal casting industry, in particular to a paper sprue pipe for casting and a molding process thereof. Background technique [0002] In the prior art, the sprue tubes for metal casting are usually made of refractory materials such as pottery and porcelain. The manufacturing process is to first make a tubular green body, and then enter the calciner kiln after drying to make refractory pottery and porcelain tubes. The refractoriness is above 1380°C. When in use, it is buried in the molding sand and becomes a channel for molten iron to enter the cavity. Its basic function is to ensure that sand washing and sand sticking will not occur during the flow of molten iron; after the molten iron is cooled, it will not stick to iron or sand. Its essence is to use the refractory properties of the material to isolate the molten iron from the molding sand to achieve the above purpose. This technique is st...

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Problems solved by technology

[0003] The purpose of the present invention is to adopt a new concept and mechanism completely different from the prior art, overcome the above-mentioned defects of the prior art, and provide a simple process, little pollution, energy saving, light weight, convenient use, and low cost , and paper sprue tubes with no carburization problems for castings

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