Sand Reclamation can be termed as the process of reconditioning of used sand in a foundry without lowering its original properties, which are particularly required for foundry application. Reclamation process for foundry sand is broadly of two types – Mechanical (Attrition) and Thermal.
Thermal reclamation is, in many ways, better than attrition (mechanical) reclamation process.for the following reasons:
1. New sand has higher thermal expansion. During pouring, the mould expands excessively and causes distortion, instability and dimensional inaccuracy. When sand is heated above 600 Deg. C, the same undergoes phase change which is permanent in nature. This phase-changed sand has lower thermal expansion and, therefore, all the problems mentioned above are less.
2. Unlike mechanical reclamation, 100% sand, except those reduced to dust, is reclaimed to better-than-new condition.
#Co2 sand Mechanical Attrition Manufacturer Ludhiana
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