Metafold Engineering Interview Questions, Process, and Tips

Sheet metal design involves considerations such as material selection, thickness, bend radius, and manufacturing processes.

• Material selection based on strength, corrosion resistance, and cost

• Determining appropriate thickness for structural integrity and cost-effectiveness

• Choosing bend radius to prevent cracking or distortion during forming

• Considering manufacturing processes like laser cutting, stamping, or welding

• Desig

Hot rolling is done at high temperatures, while cold rolling is done at room temperature or below.

• Hot rolling is done at temperatures above recrystallization point of the metal, making it easier to shape and form.

• Cold rolling is done at room temperature or below, resulting in a smoother surface finish and tighter tolerances.

• Hot rolled products are typically less precise in dimensions compared to cold rolled products.

• Ex...read more

K-factor is a ratio that represents the location of the neutral axis in relation to the material thickness in sheet metal bending. Bend radius is the inside radius of a bend.

• K-factor is used to calculate the bend allowance, which is the amount of material that will be stretched during bending.

• A lower K-factor indicates that the neutral axis is closer to the inside surface of the bend, while a higher K-factor means it i...read more

Flatten length of a sheet can be calculated using a formula based on the dimensions of the sheet.

• Measure the width and thickness of the sheet

• Use the formula: Flatten Length = (Width^2 + Thickness^2)^(1/2)

• For example, if the width is 10 cm and thickness is 2 cm, Flatten Length = (10^2 + 2^2)^(1/2) = (100 + 4)^(1/2) = 104^(1/2) = 10.2 cm