Technical Editor Mike McDonagh examines gravity casting – machinery, mould designs and alloy materials.
Since last writing on this subject, the emphasis for lead-acid manufacturers has been to transition from book-mould gravity casting to rolled-strip continuous methods. The reasons for this are chiefly to automate and speed up the grid manufacturing to match the pasting speeds of that next process. However, it is also to reduce the lead-grid thickness and therefore the lead content of the grid.
Apart from, and hopefully as well as, lead savings, it can enable the use of a higher number of thinner . . .
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