Archive for December, 2010
The Current Situation and Development of the Casting Mould
With the rapid development of the foundry industry, the design and manufacturing of the casting moulds is concerned by more and more people. Here this article will analyze the present situation of the casting mould industry and then put forward the related suggestions for the future development.
According to the related research, the mould industry has a very wide range and the casting mould plays a very important role. The first reason is its great market potential. It can seem from the following two points. The purchasing quantity of the mould is very large. Besides, a lot of factories are making efforts to produce all kinds of moulds. The second reason is related with the price. In the market, the price is very sensitive. Different manufacturers, different prices. For the same casting bearings, the prices are also different. Most of the manufacturers can only satisfy the marginal benefits. Read the rest of this entry »
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The Basic Knowledge About the Rubber Mould
Have you ever heard of the rubber mould? As its name implies, it is made of rubber. According to different mould structures and manufacturing techniques, this mould can be separated into the following four types, namely pressing die, die-casting mould, injection mold and extrusion mould. In addition, besides for the above-mentioned four types, there are also some special rubber moulds, such as inflatable mould, rubber dip mould and so on. In order to help the readers get familiar with the rubber mould, the following article will introduce its typical types in detail.
What comes first is pressing die. Sometimes it is also called the general die. The main material for this mould is the semi-finished rubber. This semi-finished rubber is processed through mixing. The so-called mixing process is a kind of rubber manufacturing technique. This process helps the rubber and all kinds of accessory ingredients mix together and thus improves the rubber’s plastic property and flow property. After the semi-finished rubber is put into the die, the die will be pressurized and heated in the plate vulcanizing machine. Then by means of the pressurization and heating the pressing die is molded. Because this die is characterized by the simple structure, convenient operation and wide applications, it accounts for a considerable proportion in the field of rubber molded parts. Read the rest of this entry »
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How to Cast Plaster Into Latex Plaster Moulds
How To Cast Into Latex Plaster Moulds
PREPARING PLASTER MOULDS FOR CASTING
Rinse the mould out with soapy water to lower the surface tension and shake dry before securing ready for casting.
SUPPORTING THE PLASTER MOULDS FOR CASTING
Cut out an opening in a corrugated cardboard box using scissors or a bread knife. The plaster moulds can then be inserted into these openings and secured with pins. The flange that surrounds the base of most latex plaster moulds will support the mould during casting. Use a few pins through the base into the cardboard if considered necessary to secure the mould.
MIXING THE PLASTER
Fill all plaster moulds with water and then tip it into the mixing bowl to find out exactly how much water is needed for your plaster mix. To ensure the plaster doesn’t set too quickly use normal tap water at room temperature. Warm water will speed up the setting time. Only fill the bowl or bucket half full to allow easy mixing. Read the rest of this entry »