| 摘要 |
PROBLEM TO BE SOLVED: To provide an agitator for avoiding breaking by improving strength of a welding part. SOLUTION: This agitator 14 has a body part 16, and a plurality of bar parts 17a and 17b. The bar parts and the body part are composed of a pipe- shaped member having the same thickness. Thus, the bar parts and the body part are welded and joined in the welding part 23 having the same thickness. Thus, a temperature difference is caused little at welding time, and the occurrence of an undercut of the welding part is checked, and the breaking is avoided by improving strength of the agitator. COPYRIGHT: (C)2004,JPO
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