UB MAE 364 Test 2 Review

What is the definition of metal forming

• Metal forming is the process of creating metal sculptures through welding and soldering techniques

• A manufacturing process by which plastic deformation occurs to change the shape of the metal workpiece

• Metal forming involves the chemical transformation of metals into new compounds through oxidation and reduction reactions

• Metal forming refers to the process of shaping metals using high-intensity lasers

Select all that apply: What types of stress do materials experience during metal forming?

• Tensile Stresses

• Compressive Stresses

• Friction Forces

• Shear Stress

What are the desirable material properties for metal forming?

• Low ductility and low yield point

• High porosity and low hardness

• High ductility and low yield point

• Low tensile strength and high elasticity

Select the two metal forming categories

• Thermal

• Bulk deformation

• Mechanical forming

• Sheet metal forming

What is the ratio used to differentiate between metal forming categories?

• Length to thickness- High for bulk, low for sheet metal

• Area to volume - Low for bulk, high for sheet metal

• Viscosity to density- Low for bulk, high for sheet metal

• Elasticity to strength- High for bulk, low for sheet metal

Match the following

• Shearing or Punching

• Rolling

• Wire and Bar Drawing

• Bulk Deformation

• Bulk Deformation

• Sheet metal forming process

• Forging

• Bulk Deformation

• Bending

• Sheet metal forming process

Select all that apply: What are the benefits of increasing the temperature in metal forming?

• Increased ductility - greater deformation possible

• Reduced strain and strength hardening - lower forces required

• Reduced ductility - greater deformation possible

• Lower tool wear and less maintenance

Match the following

• Room temperature

• Hot Working

• 0.5 Tm - 0.75 Tm

• Cold working

• 0.3 Tm - 0.5 Tm

• Warm working

Select all that apply: How does friction affect the metal forming process

(Larger friction effects occur at higher temperature)

• Metal flow reduced

• Required force and power increases

• Reduces energy required

• Increased wear and maintenance

What are the benefits of lubrication in metal forming?

• Increases maintenance and wear

• Reduced surface quality

• Reduces friction, wear, heat generation

• Improved surface quality