先焊炉底板间对接焊缝，由中间往四同辐射对称焊接。

First, weld the butt seams on the bottom plate of the furnace, with radiating and symmetric welding conducted from the central point.

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概述了元件安装机的最新技术动向和无通风管道再流焊炉绿色技术。

This paper describes newly technology trend of component mounter and green technology of ductless reflow furnance.

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介绍了铝合金扩散焊炉的设计参数及研制过程，并解决了加压装置的设计。

Mainly describe the design parameters of aluminium alloy diffusion and the development process, and also solve the design of pressure device.

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