TOP-G Bentonite for casting
Bentonite for casting is suitable for the production of cast steel and cast iron in different processes such as wet, dry, surface dry, and high-pressure type.
Bentonite for casting
Bentonite for casting is suitable for the production of cast steel and cast iron in different processes such as wet, dry, surface dry, and high-pressure type. The main ones are low addition amount, high strength, good air permeability, high hot and wet tensile strength, strong sand inclusion resistance, good high temperature resistance and good reusability. It is used as a core sand binder. It can also make molding sand which has good process performance to improve the surface finish of castings, ensure the quality of castings, and improve the yield.
Product performance indicators:
指标 | TOP-G210 | TOP-G220 |
吸蓝量，g/100g | ≥36 | ≥30 |
胶质价，mL/15g | ≥500 | |
膨胀倍数，mL/g | ≥50 | ≥25 |
湿压强度，kPa | ≥120 | ≥80 |
热湿压强度，kPa | ≥3.5 | ≥2.5 |
pH值 | 8.0~10.0 | |
水分含量，% | ≤10 | |
过筛率（75μm，干筛），% | ≥95 | |
