查看完整版本: [-- AWS D1.1  4.13.4条怎么理解? --]

中华焊接动力网旗下焊接社区 -> 钢结构 -> AWS D1.1  4.13.4条怎么理解? [打印本页] 登录 -> 注册 -> 回复主题 -> 发表主题

gelingfeng 2017-05-08 20:33

AWS D1.1  4.13.4条怎么理解?

无衬垫仅从一面施焊的TKY连接的CJP坡口焊缝要按照此条进行焊评,在4.13.4.1中又分为(1)和(2),请问这(1)(2)是二选一,还是按照(1)做评定之后继续按照(2)接着做呢?

hejing0412 2017-05-08 23:10
有争议的地方,看英文版,凭着印象,这些条款是要全部完成,不是选择性完成。

所以TYK 连接时很复杂的,我花了4个月,一套焊评还没有全做完;

7到8个评定也不多

525708290 2017-05-09 10:04
9.15.4.1 WPSs without Prequalified Status. For a
WPS whose essential variables are outside the prequali-
fied range, qualification for CJP tubular groove welds
shall require the following:
(1) Qualification in conformance with Figure 9.25 for
pipes with outside diameters greater than or equal to 4 in
[100 mm] or Figure 9.25 and Figure 9.27 for box tubes.
Qualification in conformance with Figure 9.26 for pipes
with outside diameters less than 4 in [100 mm] or Figure
9.26 and Figure 9.27 for box tubes.
(2) A Sample Joint or Tubular Mock-Up. The sample
joint or tubular mock-up shall provide at least one mac-
roetch test section for each of the following conditions:
(a) The groove combining the greatest groove
depth with the smallest groove angle, or combination of
grooves to be used: test with welding position vertical.
(b) The narrowest root opening to be used with a
37.5° groove angle: one test welded in the flat position
and one test welded in the overhead position.
(c) The widest root opening to be used with a
37.5° groove angle: one test to be welded in the flat posi-
tion and one test to be welded in the overhead position.
(d) For matched box connections only, the mini-
mum groove angle, corner dimension and corner radius
to be used in combination: one test in horizontal position.
(3) The macroetch test specimens required in (1) and
(2) above shall be examined for discontinuities and shall
have:
(a) No cracks
(b) Thorough fusion between adjacent layers of
weld metal and between weld metal and base metal
(c) Weld details conforming to the specified de-
tail but with none of the variations prohibited in 5.23.
(d) No undercut exceeding the values allowed in
6.9.
(e) For porosity 1/32 in [1 mm] or larger, accumu-
lated porosity shall not exceed 1/4 in [6 mm]
(f) No accumulated slag, the sum of the greatest
dimension of which shall not exceed 1/4 in [6 mm]
Those specimens not conforming to (a) through (f) shall
be considered unacceptable; (b) through (f) not applica-
ble to backup weld.
从英文的意思来说,是3个部分都要满足的
的确需要很多个评定和试件

gelingfeng 2017-05-09 21:57
可是根据4.13.4.2中的说法,只有两面角小于30度的,必须要使用4.13.4.1.(2)(a)所述接头进行评定。那是不是可以理解如果产品接头中的两面角大于30度,就可以不用进行此条所述的试样接头,因此无衬垫仅从一面施焊的TKY连接的CJP坡口焊缝的评定是有选择的选用

wwy157248 2017-06-21 21:04
学习学习

hejing0412 2017-06-21 21:26
这个TYK需要海量时间,反复比对,思考,哪里可以这么轻松的得到结果?

我给两个朋友分享了一次心得,对照着2010标准,整整讲了4个小时罢,里面的信息量非常大。建议沉下心来,熟悉所有部分,花大力气仔细阅读,对照图形和表格,在实践中在试验,才能够有所收获。

围墙上的猫 2017-08-08 09:51
TYK连接连接


查看完整版本: [-- AWS D1.1  4.13.4条怎么理解? --] [-- top --]


中华焊接动力网社区——全球最大焊接社区 ©2005-2011