I think so. It’s d answer.
a, As material gets thicker the ductility decreases
C, 0.5% is my answer
- In the TIG welding which parameter can be adjusted?
A. Pulse pick current
B. Pulse frequency
C. Pulse duration
D. All of above
- Submerged arc welding is noted for its ability to employ high weld currents owning to the properties a functions of the flux. Generally what polarity is used up to about 1000A?
C. DC + & DC -
D. DC +
- Before and during welding in the cleaning stage which statements from below would you consider are correct?
A. Only stainless steel brusher and tools shall be used on stainless steel
B. Only stainless steel brusher and tools shall be used on nickel and non – ferrous steel
C. Grinding discs containing Sulphur (iron sulphite) shall not be used on stainless steel
D. All of above
- Of the following heat treatments which will be the most effective in reducing the chances of HAZ?
A. Stress relieving after 6 days
B. Post heating and stress relieving after one day
C. Post heating and immediate stress relieving
D. Post heating
- A number of changes and deviations have happened during fabrication of a component, how will they be indicate to every one for future reference?
A. By verbal communication
B. By written communication
C. By incorporating them in the as built drawings
D. No need to mention these changes to every one as they are insignificant
- One way to reduced the changes of hydrogen cracking is by :
A. Using an E7018 on a short arc length
B. Using an E6010 electrode
C. Using an E7018 on a long arc length
D. None of above will reduce the chances of hedrogen cracking
- The which to depth ratio of the weld bead is generally naturally higher in which of the following weld processes?
B. Electrode beam welding
With me question 2 is DC +
Answer Electrode beam welding
The chance, not changes
I don’t think answer A. because short arc length > low arc votage > low heat input > increased hardness, hydrogen entrapment.
so i think the answer C.
Please refer the picture below from CSWIP 3.1:
I think when use the long arc length, the Hydrogen from atmosphere can contaminate to weld pool and it is susceptible to cracking
My answer is below:
Because DC- only use for overlay welding, AC use when to avoid arc blow, DC+ is normal use
Post heating at 200 degree C in 3 hours, will reduce cooling rate that help the weld softer and H can diffuse more
After fabrication, any deviation will update in As-built drawing
As explain by other comment
Stabilized grade stainless steel eg 321, 347, 348 that recommended for severe corrosive conditions and high temperature operating conditions
They are containing Titanium (321)or Niobium (347), which combine with carbon rather than Cr so no local reduction in corrosion resistance.
I consider the answer D.
Long or short arc may occur hydrogen cracking.
Be sure, CSWIP level 2 exam questions are cleare more.
B.greater deposition rate
See answer (d), EN/American standard allowed to change from 2G (PC) to 1G (PA).