试题与答案

关于压力容器产品焊接试板要求的说法,错误的是()。A.产品焊接试板经外观检查  B.

题型:单项选择题

题目:

关于压力容器产品焊接试板要求的说法,错误的是()。

A.产品焊接试板经外观检查 

B.产品焊接试板由焊接产品的焊工焊接 

C.现场组焊的球罐只制作立、横产品焊接试板 

D.产品焊接板经射线检测

答案:

参考答案:C

解析:

压力容器产品焊接试板要求: 

(1)为检验产品焊接接头和其他受压元件的力学性能和弯曲性能,应制做纵焊缝产品焊接试板,制取试样,进行拉力、冷弯和必要的冲击试验。 

(2)现场组焊的球形储罐应制作立、横、平加仰三块产品焊接试板。 

(3)产品焊接试板的材料、焊接和热处理工艺,应在其所代表的受压元件焊接接头的焊接工艺评定合格范围内。 

(4)产品焊接试板由焊接产品的焊工焊接,并于焊接后打上焊工和检验员代号钢印。 

(5)圆筒形压力容器的纵向焊接接头的产品焊接试板,应作为筒节纵向焊接接头的延长部分(电渣焊除外)采用与施焊压力容器相同的条件和焊接工艺连续焊接。 

(6)球罐的产品焊接试板应在焊接产品的同时,由施焊该球形储罐的焊工采用相同的条件和焊接工艺进行焊接。 

(7)产品焊接试板经外观检查和射线(或超声)检测,如不合格,允许返修,如不返修,可避开缺陷部位截取试样。 

(8)需进行热处理以达到恢复材料力学性能或耐腐蚀性能的压力容器,其焊接试板应同炉、同工艺随容器一起进行热处理。 

考点 

静置设备及金属结构制作安装工程施工技术

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