This paper presents a new method, the non die explosive forming method, which has successfully solved the forming of thin wall and extra thin wall spherical parts.

大型薄板球面体成形一直是板料成形工艺中的难点，本文对大型超薄壁球壳的制造提出一种整体成形新方法。

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By designing a special impregnating tank, this paper has found out the proper impregnating technology for solving leakage problem of large thin-wall aluminium alloy casings.

设计了专用浸渗罐，摸索出了合适的浸渗工艺，成功地运用浸渗技术解决了大型薄壁铝铸件的渗漏问题。

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In this paper, the structure feature and principle of this special drill has been introduced. Its special design is very useful for drilling thin-wall pipe.

本文介绍了薄壁管专用钻头的结构特点及工作原理，其结构设计新颖，对薄壁管的钻削有实用价值。

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