Casting Bentonite

Description

Bentonite for casting is made by excellent mineral processing and advanced technology. The index of our bentonite for casting meets the national standards of GBT *********7.
It has good agglutinating value, Strong cohesion, high plasticity, High fire resistance, Invariable thermal stability, Good reusability. It is an excellent casting sand binder, and suitable for casting high pressure molding processes production line. Around mold forming, It has enough cohesion strength and thermal stability to maintain the mold cavity when mold unloading. It’s easy to casting liquid metal. At the same time, Overcome sand inclusion, sand buckle, sand block falling, and sand collapsing. Ensure the precision and surface finish, improve and ensure the quality of casting parts. Casted molding sand has good reusability. 
                                                              Product Specification

Item	Level 1	Level 2
Particle size(**0 mesh) 粒度（**0目通过率）	≥*0%	≥*0%
Moisture水份	≤*2%	≤*2%
Expansion Coefficient 膨胀倍	≥*4ml/2g	≥*2ml/2g
Bentonite Value 膨润值	≥*8ml/3g	≥*0ml/3g
Blue Absorption 吸蓝量	≥*5g/**0g	≥*2g/**0g
Wet-heat Tensile Strength 热湿拉强度	≥3.8kpa	≥3.2kpa
Wet Compressive Strength 湿压强度	≥**5kpa	≥**5kpa