20 Questions
Which property describes the ability of metal to regain its original shape after deformation?
Elasticity
What is the definition of malleability in metals?
Ability to be extended in all directions without fracturing
What process refers to hardening of metals while they are being hammered or bent?
Work-hardening
Which property of metals describes the resistance to a pulling force?
Tenacity or cohesion
Which property is defined as the ability to be stretched into fine wire without fracturing?
Ductility
What is considered a mechanical means of protecting metals in furniture production?
Coating
Which metal is used in the production of hot water pipes?
Copper
What is stainless steel primarily composed of?
Chromium and Nickel
Which ferrous metal is known for being tough and ductile, making it suitable for decorative work such as screens and gates?
Wrought Iron
Which pure metal is described as being lustrous and reddish-brown?
Copper
Which metal is a primary component of galvanized steel due to its protective properties?
Zinc
Which metal is often substituted for lead in flashings and linings and used in plating?
Zinc
What is a characteristic feature of mud steel in terms of its carbon content?
Contains up to 0.3% carbon
Which non-ferrous metal is known for its excellent thermal and electrical conductivity?
Aluminum
Which of the following coatings involve the build-up of an oxide film through chemical treatment?
Chemical conversion coatings
What type of coating uses a formulation based on a dissolved material that forms a transparent layer after drying?
Lacquering
Which coating process is typically applied to only one side of the item and has no specific requirements for appearance, malleability, or corrosion protection?
Backing Coats
What is the principal use of a priming paint?
To provide a corrosion-inhibiting layer
In which coating process are chromates typically used?
Chemical conversion coatings
What does pretreatment priming typically involve?
Application of a resin, chromate, and acid solution
Study Notes
Properties of Metals
- Age-hardening: a slow hardening process in certain alloys
- Brittleness: ability to break under a sharp blow
- Conductivity: capacity to transmit heat and electricity
- Ductility: ability to be stretched into fine wire without fracture and bent
- Elasticity: ability to regain original shape after deformation
- Fusibility: property of becoming liquid when heated
- Hardness: resistance to deformation
- Malleability: ability to be extended in all directions without fracturing by rolling, hammering, or beating
- Tenacity or cohesion: resistance to a pulling force
- Work-hardening: hardening of metal while being hammered or bent
Metal Furnishes in Furniture Production
- Metals and alloys require protective covering to prevent corrosion and tarnish
- Mechanical means of protective covering include coating, painting, enameling, lacquering, and plastic and nylon coatings
Coating Processes
- One-sided or two-sided coating: single or multiple applications of liquid or powder coating materials
- Non-metallic coatings: painting, enameling, lacquering, and plastic and nylon coatings
- Coil coatings: continuous coating applications of a metal strip
- Backing Coats: single coating of any type with no specific requirements
- Chemical conversion coatings: build-up of an oxide film through treatment of a metal with chemical solutions
- Priming: applying a priming paint, often pigmented with a corrosion inhibitor like zinc chromate
- Pretreatment priming: application of a solution containing resin, chromate, and acid
- Single Coat Systems: coatings with requirements concerning appearance, malleability, corrosion protection
Types of Metal
Ferrous Metals
- Galvanized Steel: composed of iron with a protective zinc coating on its surface
- Wrought Iron: iron with traces of silicate, easily worked and tough and ductile
- Cast Iron: iron with small amounts of carbon, silicon, sulfur, etc.
- Mild Steel: iron with up to 0.3% carbon, used in general-purpose metal
- Stainless Steel: steel with chromium and nickel, used in cutlery and furniture frames
- Tool and Alloy Steel: composition varied by addition of different elements to molten steel
- Copper-bearing Steel: has high resistance to corrosion, used in making sheet steel and metal lathe
Non-Ferrous Metals
- Aluminum: lustrous silver-white, magnetic, lightweight metal, very malleable with good thermal and electrical conductivity
- Copper: pure metal, highly ductile and malleable, used in hot water pipes and electrical parts
- Lead: pure metal, soft, malleable, and heavy, used in plumbing, flashings, and container linings
- Zinc: pure metal, used as a substitute for lead in flashings and linings, and in galvanized steel
Test your knowledge of metals and their characteristics, including age-hardening, brittleness, conductivity, and more. How well do you understand the properties of metals?
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
