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scott.spears
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- author "me"
- tags "Gas welding"
- description "Gas welding"
- fileName "Gas welding"
- freezingBlueDBID -1.0
- What is the percentage of asatone in acetylene bottles
- 40 %
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What is the max operating pressure for acetylene?
15 psi
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At what temp does the safety fuse melt and blows off
Melts at 212° f and blows at 3000 psi
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Working pressure if Oxy when you are oxyacetylene welding
1-25 psi
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how many safty fuses does acetylene bottle have
5 2 on top 3on bottom
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what kind of valve its on top of an oxygen cylinder
Tobin bronze valve
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what is the diameter and capacity of an oxygen cylinder
2000 p s I 220 cubic square feet and 8 and a half inch diameter
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what is the compacity of an acetylene cylinder
125-375 cubic feet and 250 psi
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at what pressure does acetylene become unstable
15 psi
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at what pressure does a acetylene become self explosives
29.4 psi
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how should oxygen cylinders be stored with fuel or gas cylinders
should be separated at least 20 feet or by a barrier of non combustible at least 5 feet high and having a fire resistant rating of at least 1 and a half hours
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how fast should you draw off cylinders
you should not draw off in volumes greater than 1/7 of cylinders rated compacity
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how many regulators are on the cylinders
2 1 is working pressure and 1 is the cylinder gauge
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what items make up the torch
tip ,mixing head, and handle
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what is it called when you have a bad seat or buy foreign matter lodge between the seat and the nozzle
Creeping regulator
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what are the 4 types of flames
Pure burning acetylene, reducing or carbonized, neutral, and oxidizing
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what temp is pure burning acetylene
1500 degrees fahrenheit
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what temp is the reducing or carbonizing flame and what is it used for
5700 degrees fahrenheit and used for brazing
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what temp is a neutral flame
5850 degrees fahrenheit
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what temp is an oxidizing flame and what does it sound like
6300 degrees fahrenheit and makes a hissing noise
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what are the 4 types of edge prep
Bevels, vee, j, grove
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what are the 5 basic joints
corner, butt, lap, tee, edge
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what are the positions of welds
flat, horizontal, vertical, and overhead
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what are the 2 methods of welding
forehand and backhand
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what are the 2 classifications of welding
pressure and non pressure
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how should cylinders never be stored
on their sides
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you should never empty a cylinder less than what psi
50 psi
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what kind of threads are on oxygen and what kind of threads on acetylene
oxygen has right handed threads and acetylene has a left handed threads
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welding rods are classified and what 2 categories
ferrous and non ferrous
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what governs what type of welding rod is to be used
the thickness of the metal being joined
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what should the current setting be for welding a vertical position
less than those used in a flat position
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what type of welding position is considered the most difficult to perform
overhead position
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when brazing what should you never melts
the base metal
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what types of metal would you be cutting when using oxygen acetylene cutting torch
ferrous metals
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what is the abbreviation and what does it stand for electric arc welding
Smaw shielded metal arc welding
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how far r you supposed to hold the inner flame cone when cutting
1/16 inches above the cutting surface
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what are the 3 types of welding equipment
welding transformer, electric motor driven welding generator, gasoline engine driven welding generator
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welding equipment only use direct current
electric motor driven welding generator, and gasoline engine driven welding generator
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what kinda current can you weld both straight in reverse polarity
direct current
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who started the number classification system of welding rods
american welding society
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what are the 4 main factors to observe when electric arc welding
current settings, length of arc, speed of travel, angle of electrode
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what are the 2 methods used in starting an arc
striking or brushing and the other is tapping method
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