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

A technology of integral casting and clay sand, which is applied in the direction of casting molding equipment, molds, mold components, etc., can solve the problems of complex process, low yield, short service life of molds, etc., achieve simple formula and process, and reduce production costs , The effect of high casting yield

Inactive Publication Date: 2009-08-19
QINGDAO HEDELONG MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
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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:

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] According to the formula, according to the size of the sand mixer, first weigh 500 kg of clay sand, including about 475 kg of old clay sand and about 25 kg of new clay sand; weigh 25 kg of bentonite, 20 kg of coal powder, and 15 kg of water; Dry mix clay sand, bentonite and coal powder for 3 minutes, then add water and mix for 5 minutes, and transport the mixed molding sand to the designated place in the molding area. Secondly, check and clean the top mold machine and molding mold, screen the surface sand with a drum sieve, put it into the sand box and compact it carefully, then add the back sand to compact it and then lift the box; place the sand mold neatly on the pouring site; use a waste grate Put it on the upper surface of the casting mold, and then press the box iron. The weight of the press box is 4 times the weight of the casting; Thirdly, the casted grate is hung upright in the shot blasting machine for shot blasting cleaning. During cleaning, the cleaning work...

Embodiment 2

[0039] According to the formula, according to the specifications of the sand mixer, first weigh 700 kg of clay sand, including about 665 kg of old clay sand and about 35 kg of new clay sand; weigh 42 kg of bentonite, 35 kg of coal powder, and 28 kg of water; Dry mix clay sand, bentonite and coal powder for 5 minutes, then add water and mix for 7 minutes, and transport the mixed molding sand to the designated place in the molding area. Secondly, check and clean the top mold machine and molding mold, screen the surface sand with a drum sieve, put it into the sand box and compact it carefully, then add the back sand to compact it and then lift the box; place the sand mold neatly on the pouring site; use a waste grate Put it on the upper surface of the casting mold, and press the box iron again. The weight of the press box is 4 times the weight of the casting; Thirdly, the casted grate is hung upright in the shot blasting machine for shot blasting cleaning. During cleaning, the cl...

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PUM

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/10B22C1/00
Inventor 常云青耿占海翟召武常玉林刘成林刘喜俊
Owner QINGDAO HEDELONG MACHINERY
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