Precision casting technology for small type fermentation tank

A fermentation tank and precision casting technology, which is applied in the field of precision casting of small fermentation tanks, can solve the problems of cracks, sand holes, pores, poor corrosion resistance and wear resistance, and easy corrosion of the inner wall of the fermentation tank, etc. problems, to achieve the effect of reducing the range of plastic deformation, increasing corrosion resistance and wear resistance, and low cost

Active Publication Date: 2014-03-26
ZHENJIANG FENGZE BIOTECH EQUIP MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of resin sand casting is that it is rough, the shape is not vivid, and complex shapes cannot be made; the shape of lost wax precision casting is delicate, and complex shapes can be completed, but its process is complex, costly, and takes a long time, and it can only make small products. It cannot be made into a large piece, and it is easy to deform; gypsum casting is used more in the casting of craft products, the advantage can be made larger,

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A small fermenter investment casting process provided in this embodiment includes the following steps:

[0023] Step (1): After polishing the finalized fermenter model, apply Vaseline evenly on the surface, and set gates and risers on the model;

[0024] Step (2): Make the outer mold sand box, positioning core and gate core according to the casting specification;

[0025] Step (3): Mix well-proportioned molding sand, sodium water glass, organic ester and sodium fluorosilicate evenly to make water glass sand. The weight percentage of each component is: molding sand: 69%, sodium water glass: 11.1%, organic Esters: 16.4%, sodium fluorosilicate: 3.5%, of which the organic ester is ethylene glycol acetate. Then put the water glass sand into the mould, carry out the water glass sand moulding, repair the water glass sand mold after the molding, scrape off the floating sand, and then brush some potassium water glass;

[0026] Step (4): Match the water glass sand mold, and use...

Embodiment 2

[0030] A small fermenter investment casting process provided in this embodiment includes the following steps:

[0031] Step (1): After polishing the finalized fermenter model, apply Vaseline evenly on the surface, and set gates and risers on the model;

[0032] Step (2): Make the outer mold sand box, positioning core and gate core according to the casting specification;

[0033] Step (3): Mix well-proportioned molding sand, sodium silicate, organic ester and sodium fluorosilicate evenly to make silicate sand. The weight percentage of each component is: molding sand: 72%, sodium silicate: 8.7%, organic Esters: 14.5%, sodium fluorosilicate: 4.8%, and the organic esters are furan resins. Then put the water glass sand into the mould, carry out the water glass sand moulding, repair the water glass sand mold after the molding, scrape off the floating sand, and then brush some potassium water glass;

[0034] Step (4): Match the water glass sand mold, and use a hot air stove to bake...

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PUM

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Abstract

The invention discloses a precision casting technology for a small type fermentation tank, which comprises the following steps: processing a fermentation tank model for setting, then arranging a pouring gate and a dead head in the model; manufacturing an external model sand box, a positioning loam core and a pouring gate loam core according to casting specifications; manufacturing water-glass sand through mixing, and then placing the water-glass sand in a die for modelling; performing die matching on the water-glass sand, performing roasting and mould assembling by using a hot blast stove, and performing box pressing on the water-glass sand die after the completion of roasting; pouring molten iron in the cavity of the water-glass sand die for pouring, taking out a fermentation tank casting after cooling, performing sand cleaning processing, and then polishing the inner surface and outer surface of the fermentation tank casting; feeding the fermentation tank casting in thermal spraying equipment, uniformly spraying titanium alloy on the inner wall of the fermentation tank casting through a spray gun, and sequentially performing quenching treatment and drying treatment. The precision casting technology has the advantages that the technology is simple, and the cast finished fermentation tank is good in quality, abrasive resistance and corrosion resistance.

Description

technical field [0001] The invention relates to a casting process, in particular to a precision casting process for a small fermenter. Background technique [0002] Casting process is one of the basic processes of modern machinery manufacturing industry. Metal component casting is to smelt metal into liquid metal that meets certain requirements, and pour it into the casting cavity to obtain predetermined shape, size and performance after cooling, solidification and cleaning. casting process. Commonly used casting techniques in the prior art include resin sand casting, lost wax precision casting, plaster casting and the like. The disadvantage of resin sand casting is that it is rough, the shape is not vivid, and complex shapes cannot be made; the shape of lost wax precision casting is delicate, and complex shapes can be completed, but its process is complex, costly, and takes a long time, and it can only make small products. It cannot be made into a large piece, and it is e...

Claims

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Application Information

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IPC IPC(8): B22C9/02B22C9/24C23C4/06C22C37/10B22C1/10
Inventor 王守江王泳胜冯军
Owner ZHENJIANG FENGZE BIOTECH EQUIP MFG
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