High-performance dandruff comb clay sand one-piece casting method

Abstract

The invention discloses an integral forging method for a high-performance perforated strainer by clay sand, namely a method for molding and forging a high-performance perforated strainer by adopting common clay sand. The invention adopts the following specific proposal that the method comprises the following steps: using the common clay sand as a main molding material, adding 5 to 6 percent of bentonite and 3 to 5 percent of coal dust of the total weight of the clay sand into the clay sand and dry-mixing the materials, adding 3 to 4 percent of water of the total weight of the clay sand into the mixture and blending the mixture to manufacture molding sand, then molding the molding sand by an ejection molding machine with a copper molding die, and finishing the integral forging of the high-performance perforated strainer through the processes of ball-blast cleaning, painting, packing, warehousing, and the like. The method adopts the common clay sand to replace resin sand to integrally forge the high-performance perforated strainer, does not need a parting agent, does not need mechanical processing to arrange a groove and a bayonet, and has the characteristics of simple formulation and process, easy realization of industrialization, no secondary pollution during production, low production cost and high rate of forged piece finished products.

Description

Technical field: [0001] The invention belongs to the technical field of casting, and in particular relates to a method for integrally casting a high-performance grate by using clay sand. technical background: [0002] The high-performance grate has very strict material requirements and size requirements. According to the relevant regulations of the international standard EN1433:2002, if the pressure level of the tested pressure body is marked with F900, the pressure test must be carried out according to the high level. The grate that meets this level is called a high-performance grate. For the production of this kind of grate, foreign traditional production technology, foreign companies such as Germany and Spain use resin sand production line modeling, first produce casting blanks, and then process through the machining center, so that the outer contour size, bayonet and installation of the grate The size meets the technical requirements. Foreign grate molds are all made o...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of high production cost, secondary pollution, low yield, complex process, large investment, and short service life of the existing grate at home and abroad, the present invention proposes a high-performance grate clay-sand integral casting method, that is, using The method for ordinary clay sand molding and casting high-performance grate, its specific scheme is as follows: