Aiming at solving the difficulties of prototype manufacturing of conical ring for the steam generator shell of 600MW Nuclear Reactor,this paper developed a new techniques for the prototype manu-facturing of the great conical ring utilizing ring rolling technology based on RAW200/160-5 ring rolling.

1引言600MW蒸汽發(fā)生器殼體是核電站的關鍵設備大屁股91精品，由封頭、錐形環(huán)件和筒體組焊而成。以往制造這種錐形環(huán)件所采用的辦法是黄色视频免费看欧美中文字幕的，先鍛制環(huán)形筒件再采用機械加工方法成形或者采用自由鍛造方法直接在水壓機上鍛制出大型錐形環(huán)件国产精品BBBⅩXX，但這些工藝既費工時又大量浪費材料，而且產(chǎn)品精度不高[1]久久九精品国产电影精品。

X-ray real time image system was used to detect I style laser weldments nondestructively, and X-ray detection images were obtained.

采用X射線實時成像系統(tǒng)對工字形激光焊件進行檢測18岁女成年网站视频在线免费观看，得到了含有微小缺陷的低對比度射線檢測圖像。

flash butt welding：閃光對焊

shanguang dulhan 閃光對焊(flash butt welding)一種壓焊 方法. 焊件裝配成對接接頭,并夾在通電的夾具上,使 焊件端面緩緩地移近到局部接觸,利用產(chǎn)生的電阻熱 使接觸點很快被加熱至高溫,形成閃光或電弧,同時產(chǎn) 生強烈的金屬飛濺,