Surface treatments and finishes (AQA GCSE Design and Technology): Flashcards
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PCB lacquering materials
PCB lacquering materials
Polymers & specialised lacquer materials
Primary purpose of PCB lacquering
Primary purpose of PCB lacquering
Prevent short circuits from metal strands/solder
PCB lacquer weight
PCB lacquer weight
Virtually weightless
Main safety hazard of PCB lacquer
Main safety hazard of PCB lacquer
Highly flammable & toxic
Primary role of lubrication
Primary role of lubrication
Reduces friction between moving parts
Definition of viscosity
Definition of viscosity
A fluid's resistance to flow
Forms that lubricants can take
Forms that lubricants can take
Solid, semi-solid, liquid, or gas
Composition of grease
Composition of grease
Oil combined with thickening agents
Particle materials in dry lubricants
Particle materials in dry lubricants
Silicone or graphite
Factors for selecting lubricants
Factors for selecting lubricants
Load, spacing, temp, speed, porosity, flow rate