최신 API-577 무료덤프 - API Welding Inspection And Metallurgy
For carbon steels, the HAZ includes those regions heated to a temperature greater than:
정답: A
Which of the following transfer methods associated with GMAW is characterized by a highly directed stream of discrete drops that are accelerated by arc forces, and negligible spatter?
정답: D
Which term is used to describe a groove melted into the base metal adjacent to the weld toe or weld root and left unfilled by weld metal?
정답: C
The most common measure of weldability and susceptibility to hot cracking of austenitic stainless steels is the ferrite content of the weld metal. Which of the following ranges is the recommended minimum ferrite content of the weld metal needed to prevent cracking?
정답: D
Which of the following is a commonly accepted limitation of flux core arc welding (FCAW)?
정답: C
Which of the following is a practical solution that could prevent or reduce lack of fusion in carbon steel during the weld process?
정답: D
The simplest weldability tests are those that evaluate:
정답: B
Which of the following is not usually an essential variable on a WPS form?
정답: C
Steels usually require both preheat and PWHT if they have a carbon equivalent higher than:
정답: B
Hot tapping and in-service welding should be carried out only with:
정답: D