Good Sand Mould Casting Process: V Method Molding

Good Sand Mould Casting Process: V Method Molding

A. Solution Description

Vacuum seal molding known as V approach molding, the approach is a bodily strategy by utilizing of solitary dry sand(no water binder and appendages), molding by plastic film with vent and suction gadgets, right after heating and then sealed the sand box, pumping out air by vacuum pump, the stress compact the dry sand to the required shape.

Usually the method  casting line consists of molding units and sand processing models. The primary equipment are as adopted:
Molding units: sample-film masking gear-movie stretching plate-molding sand financial institution-vibrated desk-vacant box change in excess of machine-drying gear-sand box-maniplator and other folks.

Sand processing units: shaked out grille-vibrating conveyor sand device-magnetic separator boiling cooling classifier and other.

B. Procedure

V process is namely called “Vacuum method casting machine”. It is a new sort casting technology which adopts dry sand (no water, no binder, no tagger). It truly is automatic by an electrical manage system, the approach is showed as followed:

a. will pre heat the plastic film beneath adverse stress and suck it on the total surface of the pattern and the template, then spray the quickly drying coating evenly on the film.

b. put the sandbox with the suction chamber.

c. filling with no binder, dry sand and h2o additions, although sand edge a bit vibration, to make sure that the dry sand fill sand box. Scrape the flat, and include the material movie at the top of the sand box and vacuum by means of the wall of the box box.

d. turn above the box and begin the mildew. Owing to the result of atmospheric force, the plastic film is evenly pasted on the sand mold, and the molding sand is in a limited condition. The sample is taken out to obtain the sand mildew with a hardness of about 90 levels.

e. sort, the negative strain of the mould has been maintained till the casting is completed.

f. adverse strain is launched, the mould breaks on its possess, can be effortlessly taken off from the mildew dry sand casting.


C. Advantage
   a. CZPT of castings with no burr, without draft and with nominal maching allowances.
    b. Large reproducible demensional accuracy and superb area quality of the castings.
    c. No sample use
    d. Ideal for all frequent casting metals.
    e. Less sand decline and atmosphere welcoming engineering.

D. Shortcoming

The molding procedure is complicated and the molding productivity of small castings is not high. It is challenging for mechanized h2o generation to keep negative pressure from molding, mix and casting till the casting is sanding. In addition, the elongation of the plastic film and the limitation of the formability affect the expansion of the application variety of the method.


E. About us

DeXu CZPTry Co., Ltd. is a machinery production and buying and selling organization. Largely target on shot blasting cleaning equipment, sand casting tools, building machinery, rubber equipment, equipment areas, and has all kinds of products, products import and export license. 

The firm is located in Xihu (West Lake) Dis. district HangZhou, ZheJiang province, cover an area 17000 sq. meters, the manufacturing location 11, 000 square meters. The firm has much more than 200 workers, far more than twenty skilled experts and engineers. After a long time of growth, the company′s creation capacity and technical amount in the very same sector in a higher situation, and designed a good efficiency. The investigation and growth middle of the business continuously develops revolutionary goods to satisfy client requirements and create increased price for customers.


We have many customers in China, Australia, India, South Africa, Tanzania, Nepal, Armenia and other countries and launched brokers. 

HangZhou Dexu machinery Co., Ltd warmly welcomes pals at property and abroad to go to, information, exchange and cooperation ! 



Good Sand Mould Casting Process: V Method Molding