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What are the disadvantages of using acetylene to pre-heat welds?
Wiki User
∙ 11y ago
higher cost, low heat input
Wiki User
∙ 11y ago
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Why is co2 added to argon when making gma spray transfer welds?
to increase splatter
What are two advantages of using bonded structures over riveted structures?
Some advantages of welded and bolted structural steel connections include improved durability, strength, and longevity. The weld provides a physical bond while the bolts provide constant pressure to help prevent broken welds.
What causes black spots on fluorescent bulbs?
Normal wear and tear from arc welds when bulb is becoming deteriorated. replace if you don't to wait till they burn out on their own.
Why cast iron can not cut by gas cutter?
The simple answer is that stainless steel oxidises during the cutting process and this has to be removed before and further process can take place. Oxy Acetylene cutting equipment cannot be used because the oxygen reacts with the chromium and nickel to create a very aggressive and thick oxide layer on the cut material and this is very difficult to remove. During the TIG welding process (commonly used for the first run in butt welds in stainless steel) the same problem arises unless the welding is carried out in an inert atmosphere (usually high purity argon) hence the need for backing gas when welding stainless steel piping.
What are the common substances used in welding?
welds are made up of the base material (the metal you had before welding) and a filler material (what you see in addition to the base material) the most common materials welded are steel, aluminum, and stainless steel, and then alloys of each. The filler material can be an exact match to the base, but is usually a compatible alloy containing some other metal to aid in welding i.e. carbon, magnesium, etc
What does OFW mean in welding?
OFW stands for oxygen-fuel welding. This groups together the welding processes that use oxygen and a fuel, such as acetylene or propylene, to heat the base metal to it's melting point. Autogenous welds may be made using this process (meaning without filler metal).
What are the advantages and disadvantages of tig welding?
Advantages Can be used to weld almost any metal as well as dissimilar metals. Gives very good quality welds (structurally and appearance) No slag involved Disadvantages Slow requires high skill to master
How melal are used in welding?
Depending on the welding process, material preparation and welding procedure (Preheat, Interpass maintenance, Post weld cooling time), virtually all metals can be welded. Welding is in almost everything manufactured from metals (and some plastics), from cars and spacecraft to potato chip bags and cola cans. If you look under the hood of your car, you will see small indentations where parts come together (spot welds), your bicycle has GMAW welds, plastic garbage bags are sealed by microwave welds, the stainless steel stove hood is GTAW welded, the bridge you drove over has SMAW welds....and the list goes on... If it's made of metal, there is probably a weld on it.
What is the plural of weld?
The plural of 'weld' is 'welds', as in "He made several welds to the car frame."
What does a arc welder do?
it welds
What is the probability that 20 substandard welds will be found out of 300 randomly selected samples knowing that 5 percent will be substandard?
Using the Poisson approximation, the probability is 0.0418
What is a clean process that welds complex materials with a highly concentrated arc?
A clean process that welds complex materials with a highly concentrated arc is?
How many more spot welds were added to the 2012 Toyota Camry?
56 additional spot welds were added Adrees Toyota of Berkeley
How do calculate a welding rods per inch dia in ms pipe welding?
You multiply the number of welds by the diameter of the pipe that those welds are applicable to.
What is a good present for a dad who welds?
google " gifts for the welder"
Why are pipe butt-welds beveled?
to assure a strong bond
What is skip welding?
A series of short welds. Looks like _ _ _ _ _
