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Foundry bentonite mixed soil dealer
Casting sodium-based bentonite is a necessary binder for casting sand molds, and the selection of suitable bentonite according to the quality of casting can not only ensure quality, but also reduce costs. Therefore, selecting the right bentonite according to the quality of the casting is the top priority of the sand mold work.
Characteristics and characteristics:
This product is white or light yellow powder, earth red powder.
ThProduct Category:
(1) Sodium level: belongs to high thermal stability casting with sodium-based bentonite, this product is suitable for high-precision castings, precision castings, with less input (less than 5%), wet pressure, high thermal and wet tensile strength, air permeability, good reusability performance, is a must for high-precision castings, precision casting manufacturers.
(2) Sodium secondary level: belongs to ordinary casting sodium-based bentonite, this product is suitable for precision castings, ordinary castings, with moderate input (5-8%), air permeability, good reusability, is the main choice of precision castings, ordinary casting manufacturers.is product is white or light yellow powder, earth red powder.
3) Calcium-based: It belongs to ordinary casting calcium-based bentonite, this product is suitable for ordinary castings, rough castings, and is the preferred product for rough castings.
Packaging and storage:
The inner plastic film is used, the outer woven bag is packaged in two layers or packaged according to user requirements, and the packaging weight is 400.25kg, 500.25kg, 10001.0kg.
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Sodium-based bentonite for casting
Bentonite is a special mineral clay with viscosity, expansion, lubricity, water absorption and thixotropy and other characteristics, the use has covered casting materials, metallurgical pellets, chemical coatings, drilling mud and light industry and agriculture in various fields, later because of its wide use, known as “universal soil”, this paper mainly discusses the application and role of bentonite in casting.
Structural composition of bentonite
Bentonite is composed of montmorillonite according to its crystal structure, because its unique crystal has strong adhesion after water absorption, so it is widely used in casting sand, the sand is bonded together to form wet strength and plasticity, and dry strength after drying. After bentonite is dried, its cohesion can be restored after adding water.
