Chapter $24$ Reading Review: Surfacing and Hardfacing

Fill in the blanks using the words listed below.

$\backslash$table$[[$Galling$,$metallic,wear,flux$-$cored$],[$molten$,2400,$Minimal dilution,$7000],[$Common$,$sparce,arcion,erosion$],[$Grit$,$impact damage,removed,acetylene$],[$process$,$center,hardfacing,dilution$],[$corrosive$,$Facing diluted by base,$\backslash$table$[[$Sacrificial anode$],[$protection$]],\backslash$table$[[$Base metal diluted by$],[$zone $2]]],[$pool$,$Vertical up$,$electrode,base metals$],[$Hardfacing$,5600,,$strength$]]$

Serfacing $--$ is the application of one or more layers of additional material to a surface to obtain desired properties or dimensions

Most $q,$ types can be repaired by surfacing. However, not every type of surfacing may be applied to every type of wear.

Areas in which $$ occurs include but are not limited to coal and ore chutes and slurry pipelines

Any metal remaining from a previous surfacing operation must also be

Heat treatment methods usually depend on the type of thi

The amount o $$ is reduced for successive layers, since each layer is diluted by only the layer before it$.$

Th $$ acts like a cushion absorbing some of the energy of the $$ before it effects the base metal.

The filler metal is then moved into th $$ of the flame and melted.

Composite filler metals, such as $-$ electrodes, consist of a tubular steel shell witt $-$ powders or fine partials of hard compounds incorporated into the center or into the coating.

The arc is struck between the $$ and the workpiece while surfacing material is supplied in powder form.

Coatings are generally used for wear or corrosion resistance, not $-$

$12.$ blasting is commonly used to rough a surface.

$13.$ The most commonly used gas for oxy$-$fuel is $-$ which is capable of producing

$$ temperatures exceeding $q,$ degrees $F.$

$14.$ The alloy particles become $q,$ as they are sprayed through the flame and into the workpiece.

$15.$ The temperature of the detonated fuel is about $$ degrees $F$ and the pouter reaches velocities up to $\frac{f}{s}.$

$16$ ; only applied to surfaces or edges that may wear excessively if not protected.