Q) Is riveting and fixing iron rim into wooden wheel by both expansion and contraction process are same ???
Info:- Ch:- Changes around Us
Grade:- VI
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The metal rim is always made slightly smaller than the wooden wheel. The metal rim is heated. On heating, the rim expands and fits onto the wheel. Coldwater is then poured over the rim. Due to cooling the metal rim contracts and fits tightly onto the wheel.
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