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Article: Promote Homogeneity for Optimal Green Sand Conditioning.
- Article from:
- Modern Casting
- Article date:
- February 1, 2000
- Author:
CopyrightCOPYRIGHT 2000 American Foundry Society, Inc. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Appropriate clay/water ratios, homogenous clay hydration, well-dispersed additives and adequate aeration are important to realizing a properly conditioned green sand system.
There is more to green sand control than just having all system constituents pres-ent in the proper percentages. One can pour a gallon of water onto a dry heap of sand and correctly state that the resulting combination is now at 3% moisture, but this doesn't take into account how well the sand has been conditioned. Conditioning refers to how well the ingredients have been mixed, how evenly the clay has been hydrated and "smeared" onto the sand grains, and how "fluffy" and moldable the sand ...