3D Product Materials and Finishing 2

Question 1

What is 'powder coating' and what advantages does it offer over liquid spray painting for metal products?

Accepted Answer

Electrostatically applied dry powder cured by heat, offering superior durability, uniform thickness, and no solvent emissions

Answer

A coating applied with a powder brush for decorative effects

Answer

A zinc-based rust prevention treatment

Answer

A ceramic coating for high-temperature parts

Question 2

What is 'die casting' and which metals are most commonly used in this product manufacturing process?

Accepted Answer

Forcing molten metal into a steel die under high pressure; most commonly using zinc, aluminum, and magnesium alloys

Answer

Cutting parts from solid metal billets in a CNC machine

Answer

Casting molten metal into sand molds

Answer

Stamping flat metal sheets in a press die

Question 3

What does 'UL 94' rating indicate on a plastic product material datasheet?

Accepted Answer

The flammability classification of the plastic material — how it behaves when exposed to a flame

Answer

The UV resistance level of the material

Answer

The tensile strength in megapascals

Answer

The recycled content percentage

Question 4

What is 'texture' in the context of injection molded plastic product surfaces, and how is it specified?

Accepted Answer

A surface pattern applied to the mold steel via etching or EDM, specified by SPI or Mold-Tech standards

Answer

A bump map applied digitally in a rendering engine

Answer

A sandpaper grit applied after molding

Answer

A paint technique for decorative effects

Question 5

What is 'ABS+PC blend' commonly used for in consumer electronics product housings?

Accepted Answer

Combining ABS's processability and color range with PC's impact resistance and heat stability

Answer

Creating a biodegradable housing material

Answer

Producing optically clear transparent parts

Answer

Making ultra-flexible, rubberized enclosures

Question 6

What is 'electroplating' in product design finishing?

Accepted Answer

Depositing a thin metal layer (chrome, nickel, gold) onto a substrate using electrolysis for appearance or function

Answer

Painting products with metallic flake paints

Answer

A vacuum deposition coating process for mirrors

Answer

Applying carbon fiber weave to plastic parts