| 单词 | sink head |
| 释义 | > as lemmassink head sink head n. now rare a reservoir attached to or forming the top of a channel in a mould, used to continuously supply molten metal to a casting as it cools and contracts. ΚΠ 1865 J. L. Lowry U.S. Patent 47,740 1/2 Sometimes the sink-head is two or three inches lower on the outside of the casting. 1915 Foundry 22 Nov. 147/1 It is quite common to stop pouring through the gate when the metal reaches the sink-heads, and pour the latter from the top. 2006 J. M. Walker in R. Crowson Handbk. Manuf. Engin. (ed. 2) III. 35 Hence a casting or an ingot is given a sink head large enough to supply the extra metal needed in the desired shape when frozen. < as lemmas |
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