问题 问答题 简答题

请叙述锅炉挖补修理的操作步骤。

答案

参考答案:

(1)按照锅炉元件烧坏部位形状制作样板(可用样板纸或薄铁皮制作)。如果样板为长方形,四角必须为圆弧形,圆弧半径要大于100mm。

(2)制作补板。补板的长或宽尺寸不得小于250mm,如果小于250mm,必须做成圆形。

(3)将已做好的样板放在锅炉元件损坏部位,划好切割线,按线将需挖补处割下。

(4)用同一样板在准备好的补板上划线,尺寸要按样板尺寸放大5mm,按线割下,预弯成若干小元件圆弧半径。

(5)按要求做好元件焊口与补板焊口处的坡口。

(6)将补板放元件的割洞内,调整好焊口的平面与间隙,一股间隙控制在2mm。

(7)将补板与元件点焊牢固。

(8)由有锅炉压力容器焊接操作证的焊工,依照焊接工艺要求施焊。

(9)焊接结束后清理焊缝、焊渣,并对焊缝进行无损伤检验,合格后对焊接部位进行退火处理。

(10)最后进行水压试验和射线探伤检验,检查焊接质量。

选择题
阅读理解
"S. H.E. is going to sing at the CCTV annual Spring Festival Evening Party, is that true?" cried out Peng Weiye, a Senior 2 girl in Shanghai and die-hard S. H.E. fan.
After checking it on the Internet, Peng quickly phoned friends to spread the news. For fans like her, S. H. E. ’s performance is perhaps the only part of the old fashioned evening to get excited about.
The Taiwanese band is made up of Selina, Hebe and Ella. Their name comes from the first letter of each of the singers' English names.
Last week S. H. E. announced they would perform in Las Vegas, US, over Christmas and then in Guangzhou on January 15.
At their Shanghai show on October 30, hundreds of parents waited outside the Hongkou Stadium. Inside, thousands of teenagers sang, cried and shouted as the band performed.
"I love their music, healthy image and everything related to them. Thank God that, although my parents don't understand why I love them so much, they still bought me a ticket for that show," said Peng about the Shanghai performance.
It is not just on the mainland that the three girls have made audiences much excited. In the past year the band has passed through Taiwan, Hong Kong and even Singapore and Malaysia.
When the three high school girls entered a singing contest in Taiwan in 2000, none of them ever dreamed of being a superstar. "We had never met before, and we didn't talk at all at the beginning," recalled Ella.
When asked about the secret of their success, she said, "Our average looks and not-so-expensive clothes keep us close to our fans. We are happy to be the girls next door, your singing sisters."
"It's really a magical journey, from day-dreaming high school girls to singers performing on the same stage as our idols(偶像). Nothing but magical," she said.
小题1: Why was Peng Weiye, a Senior 2 girl, so excited?
A.S.H.E. band will get the old fashioned evening exciting.
B.S. H.E. will perform in Las Vegas over Christmas.
C.Her parents bought her a ticket for S. H. E. Is Shanghai show.
D.S. H.E. will perform on the CCTV Spring Festival Evening Party.
小题2:How did the Taiwanese band get the name?
A.Their fans gave the name to them. B.Their idols had a deep influence on them.
C.A singing contest gave their idea of the band name.
D.The first letters of Selina, Hebe and Ella form the band name.
小题3:What do you know about Peng Weiye?
A.She stayed outside the Hongkou Stadium to listen to S. H. E. 's performance.
B.She will watch the performance in Guangzhou on January 15.
C.She pays close attention to everything about S. H. E.
D.She was grateful that her parents understood and supported her.
小题4:Which is true about S. H. E. ?
A.The secret to their success is their pretty faces and lovely clothes.
B.They were close friends when they entered a singing contest.
C.They caused a storm of excitement in Southeast Asia.
D.They have well prepared to perform with their idols.
小题5: Which do you think is NOT the reason for S. H. E’s popularity among their fans?
A.Their music and their healthy image.
B.Their success meets their fans’ day dream of becoming others’ idols.
C.They can make audience much excited
D.Their average looks and not-so-expensive clothes keep them close to their fans.