M&P course welding and corrosion Quiz Crossword

_______ Crack – It is more prominent during crystallization of weld joints where the temperature can rise more than 10,000-degree Celsius.
__________ Crack – This type of crack occurs at the end of the welding process where the temperature is quite low. Sometimes cold crack is visible several hours after welding or even after few days.
When the base of metal melts away from the weld zone, then a groove is formed in the shape of a notch, then this type of defect is known as ______________. It reduces the fatigue strength of the joint.
__________________ - When the weld face extends beyond the weld toe, then this defect occurs. In this condition the weld metal rolls and forms an angle less than 90 degrees.
Incomplete ______________ occurs when the welder does not accurately weld the material and the metal pre solidifies which leads to a gap which is not filled with the molten metal.
These defects occur only in the butt welds where the groove of the metal is not filled completely. It is also called as incomplete _______________ defect.
_____________________ is a natural process that converts a refined metal into a more chemically-stable form such as oxide, hydroxide, or sulfide.
Corrosion is an ___________________________ process in which a metal reacts with its environment to form an oxide or other compound.
The cell which causes this corrosion process has three essential constituents: an anode, a cathode and an ________________ (electrically conducting solution).
The ____________ is the site at which the metal is corroded
The________________ (part of the same metal surface, or of another metal surface in contact with it) forms the other electrode in the cell and is not consumed in the corrosion process.
Because of the electric currents and dissimilar metals involved, this form of corrosion is called ______________ or two-metal, corrosion. It is electrochemical corrosion.
_________________ is one of the most destructive and insidious forms of corrosion. It causes equipment to fail because of perforation with only a small percent weight loss of the entire structure.
______________ corrosion is the acceleration or increase in rate of deterioration or attack on a metal because of relative movement between a corrosive fluid and the metal surface. Generally, this movement is quite rapid, and mechanical wear effects or abrasion are involved.
The process is called ____________ because the part to be treated forms the anode electrode of an electrolytic cell. Anodising increases resistance to corrosion and wear, and provides better adhesion for paint primers and glues than bare metal does.