| 摘要 |
PURPOSE:To easily obtain a uniform horizontal jet surface by providing a narrow passage for giving resistance to a solder flow extending over the overall width of a nozzle, in the lower opening part of the nozzle. CONSTITUTION:In the lower opening part 15 of a nozzle 14 of a solder tank 12, a narrow passage 21 for giving a resistance to a solder flow against the carrying direction W of a work 17 is provided extending over the overall width of the nozzle 14 with an orthogonal directivity. At a stage that the solder flow passes through this passage 21, in case there is a variance of a high pressure part and a low pressure part in the solder flow, a pressure equalizing phenomenon extending from the high pressure part to the low pressure part is generated by a resistance operated from the narrow passage 21, and a jet surface 18a from the nozzle 14 becomes a uniform horizontal plane extending over the overall width of the nozzle 14. |
