Wet bag type cold isostatic molding is a molding method using liquid medium incompressible and uniform transfer of pressure; dry bag type directly pressurized on the surface of the working bag, the pressure is transferred to the rubber elastic mold around the mold cavity of the powder product molding.
Isostatic Pressing Bags/Molds/Toolings, Cold Isostatic Pressing bags/Molds/Toolings
Wet bag type cold isostatic molding is a molding method using liquid medium incompressible and uniform transfer of pressure; dry bag type directly pressurized on the surface of the working bag, the pressure is transferred to the rubber elastic mold around the mold cavity of the powder product molding.
Isostatic molding method has the following characteristics.
(1)It can mold complex shapes, large pieces and thin and long products that cannot be produced by ~ general methods, and the molding quality is high.
(2) It is easy to increase the molding pressure without increasing the difficulty of operation, and the effect of pressure is better than other dry pressing methods.
(3)Since the billet is evenly pressed in all directions, its density is large and uniform, and the firing shrinkage is small, so it is not easy to be deformed.
(4) The mold is easy to make, long life and low cost.
(5) Less or no binder can be used.
Advantages and disadvantages of isostatic molding.
Advantages: high density, good quality, can be molded in large quantities
Disadvantages: high cost, can not do special shapes
Isostatic molding method:
There are two types of isostatic molding methods, cold isostatic pressing and hot isostatic pressing. Cold isostatic pressing is further divided into wet isostatic pressing and dry isostatic pressing. The mold is in high pressure liquid, all parties are under pressure, so it is called wet isostatic pressing. It is mainly suitable for molding many kinds of products, more complex shapes, small output and large products. Dry isostatic pressing can form slender bar or tube blanks that are difficult to prepare by conventional molding process. The products have high strength and good workability, which can greatly reduce the internal stress. The mold is easy to make, long life and relatively low cost. It can form large size press billets with small machining allowance and save raw material cost.
The operation process of isostatic pressing equipment is as follows: First, the blanks are loaded into the elastic mold made of plastic or rubber, placed in a high-pressure container, sealed, and then hit the high-pressure liquid medium, the pressure is transferred to the elastic mold so as to process the blanks. Then release the pressure to remove the mold, and from the mold to remove the molded blanks. The liquid medium can be water, oil or glycerin. However, a medium with low compressibility should be chosen, such as brake oil or anhydrous glycerin. Elastic mold material should be rubber or similar plastic with good elasticity and good oil resistance.
Isostatic Pressing Bags/Molds/Toolings, Cold Isostatic Pressing bags/Molds/Toolings
Jiangsu High Industry focuses on the research and production of isostatic pressing moulds, customizes various dry bag and cold isostatic pressing moulds, adapts to different models of various manufacturers at home and abroad, and deeply understands the needs of various industries. Alloy, graphite and other industries provide high-performance isostatic pressing mold rubber sleeves.
Compare to traditional rubber cold isostatic pressing bags, the polyurethane CIP bags have significant advantages. As a new polymer material, polyurethane products feature smooth surface, wearing-resistant, anti-fatigue, low deformation rate. The surface of pressed products with polyurethane bags is much smoother than that pressed with rubber bags, thus it possesses better looks and less postprocessing is required. It’s an ideal tool for powder material forming by press process, which can help a company reduce cost and increase efficiency.
Durability and deformation rate are factors that users care most. A long working life of pressing bag can reduce cost and increase production efficiency, while low deformation rate of the bag will enhance precision and yield of products. By close cooperation with material suppliers and great mass of manufacturers of carbide, ceramics and graphite products, we accumulated a lot of experience in this industry and become a well-know supplier of CIP bags.
We support all kinds of customization, if you need it, please contact us.
Phone/whatsapp:+86 18234744811
Email:sales@highindustryco.com
