Final Flashcards
_____ forming includes a large group of manufacturing processes in which plastic deformation is sed to change the shape of metal work pieces
Metal
_____ _____ processes are generally characterized by significant deformations and massive shape changes, and the surface area-to-volume of the work is relatively small.
Bulk deformation
Starting work shapes include cylindrical _____ and rectangular _____
billets, bars
Basic bulk deformation processes:
rolling, forging, extrusion, drawing
Basic sheet metal working operations:
bending, drawing, shearing
Three temperature ranges in metal forming are:
cold, warm, hot
Which temperature range requires the higher forces and power in the forming operation
cold
Which temperature range has the capability to produce substantial plastic deformation of the metal more than the other two
Hot
_____ in metal forming arises because of the close contact between the tool and work surfaces and the high pressures that drive the surfaces together in these opperations
Friction
Metalworking _____ are applied to the tool-work interface in many forming operations to reduce the harmful effects of friction
lubricants
T or F: The following products can be made through the hot rolling process: profiles for selection beams, columns for construction, and plates
True
T or F: Tin for cans can be made through the cold rolling deformation process as stated in the video
True
What is the name of the primary type of hot extrusion?
Direct or Forward
The force for extruding is applied by _____ along with an intermediate reusable _____ _____
ram, dummy block
Friction portion of the force between the Billet length and the container can be reduced by using what?
Lubricant
_____ is a deformation process in which the thickness of the work is reduced by compressive forces exerted by two opposing rolls
Rolling
Today, _____ is an important industrial process used to make a variety of high-strength components for automotive, aerospace, and other applications
forging
There are three types of forging operations:
open-die, impression-die, flashless
_____ is a forging operation performed to reduce the cross section and redistribute the metal in a work part in preparation for subsequent shape forging
Fullering
_____ is a special application of closed-die forging in which fine details in the die are impressed into the top and bottom surfaces of the work part
Coining
_____ is a compression process in which the work material is forced to flow through a die opening to produce a part with a cross-sectional shape that is the same as the shape d the die opening
Extrusion
In the context of bulk deformation, _____ is an operation in which the cross section of a bar, rod, or wire is reduced by pulling it through a die opening
drawing
