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27 Cards in this Set
- Front
- Back
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welding |
may be defined as uniting metal parts by heating or compression |
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soldering |
means bonding with metals and alloys that melt at temperatures below 804°F. |
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brazing |
means bonding with metals and alloys that melt at or above 840°F |
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Capillary action |
is the rising of the surface of a liquid that is in contact with a solid. |
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filler rod |
The brazing alloy is then added by means of a long,thin metalrod called a |
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fusion welding |
means joining parts by melting them together. |
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oxide |
An ______ is the product resulting from oxidation of metal. |
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Oxidation |
means combining with oxygen. |
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impurity |
is any product other than the base metal. |
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flux |
is given to any chemical used to clean metal. |
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Tarnish and corrosion |
Fluxes remove ________ and ______ caused by oxidation. |
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Tinning |
is the key to success in soldering and brazing. |
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tinning |
means to bond filler material to a base metal |
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Brazing and braze welding |
are generally done in agricultural mechanics using an oxyfuel torch. |
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oxyfuel torch |
Brazing and braze welding are generally done in agricultural mechanics using an _______ |
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Acetylene |
is perhaps the most widely used fuel. |
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Torch Tips. |
Tips used for oxyfuel welding have a single hole. |
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Torch Adjustment. |
A good general rule for torch adjustment is that most soldering, brazing, and welding is done with a neutral flame |
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bead |
A _______ is a continuous and uniform line of filler metal. T |
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butt weld |
is essentially a bead laid between two pieces of metal set edge- to-edge. |
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tacking |
The process of making a small weld to hold two pieces together temporarily is called . |
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Burn-through |
is the process whereby the cool side of metal becomes molten and a hole opens in the surface due to excessive heat from the opposite side. |
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Puddling |
The first step in oxyacetylene welding is to control the puddle. This is called___ |
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pushing the puddle. |
To create a bead by puddling without a filler rod is called |
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Back-stepping |
. is making short welds in the backward direction as the process progresses in the forward direction ( |
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fillet weld |
is made by laying a bead in a 90-degree angle formed by two pieces of metal |
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propane and oxygen torches and propane furnaces for heating and soldering |
Shops may also have |
