Foundry sand adhesives serial bentonite is standard by JB/T9227 1999 issued by National Industry Department. It was apply to settle the problem of high pressure model production line, sand mold collapse. it can produce fine plasticity, coacervation, and it will surround the mound and shaping, it is strong enough to keep its shape after through off the mold. So that it is easy to pour hot metal liquid. it can typecast wet or dry shape sand, improve the cast quality. In a word, it is a fine quality cast sand adhesives, which has the character of dilatability, cohesiveness, floatability. And gel dispersivity, repeated use.
YH-foundry bentonite
specification |
Expand ratio(ml/g) |
Gel rate(ml/15g) |
Green compression strength(KPa) |
Hot compression strength(KPa) |
Swelling |
YH-01 |
>20 |
>100 |
>50 |
>2.5 |
>25 |
YH-02 |
>12 |
>80 |
>30-50 |
>1.5-2.5 |
>15 |
YH-03 |
>8 |
>40 |
>20-30 |
>0.6-1.5 |
>10 |
Chemical analyses and exchange capacity of the original ore.
Chemical analysis |
Cation exchange capacity mmol/k00g+ |
SiO2 |
Al2O3 |
Fe2O3 |
CaO |
MgO |
CaO |
other |
loss on ignition |
CEC |
ECa2+ |
EMg2+ |
71.78 |
14.35 |
1.27 |
0.16 |
2.66 |
1.63 |
2.66 |
2.17 |
5.98 |
70.5 |
17.9 |
