chapter 7. §7.1 introduction definitionclassificationcharacteristicsapplicationsignificance
TRANSCRIPT
Chapter 7Chapter 7Chapter 7Chapter 7
§7.1§7.1 Introduction Introduction
DefinitionDefinition
ClassificationClassification
CharacteristicsCharacteristics
ApplicationApplication
SignificanceSignificance
Building steels areBuilding steels are
those for engineering those for engineering
buildingbuilding
Including Including Profiled steelsProfiled steelsSteel platesSteel platesSteel wiresSteel wiresSteel barsSteel bars
DefinitionDefinition
steel bars
profiled steelsprofiled steels
steel platessteel plates
steel wiressteel wires
ClassificationClassification
Metal MaterialMetal Material
Colored MetalColored Metal
Blackness MetalBlackness Metal
Cu, Al and alloyCu, Al and alloy
Steel ConstructionSteel Construction
Bars of SteelBars of Steel
Pig Iron (c>2.06%)Pig Iron (c>2.06%)
Classification by chemical component: Blackness Metal and Colored Metal :
AdvantagesAdvantagesHigh strength-weight High strength-weight ratioratioBetter plasticity and Better plasticity and toughnesstoughnessStanding of Standing of impulsions and impulsions and vibration loadvibration loadFlexible processingFlexible processing
CharacteristicsCharacteristics
DisadvantagesDisadvantagesEasily to be erodedEasily to be eroded
High cost of High cost of maintenancesmaintenances
Building steels are used in:Building steels are used in: Long-span constructionLong-span construction Multi-layer and high-layersMulti-layer and high-layers The heavy-factories bearing the dynamic loadThe heavy-factories bearing the dynamic load
ApplicationApplication
Steel BridgeSteel Bridge
Building steels are Building steels are the common materialthe common material in the buildings . in the buildings .
There are a variety of steels differing in There are a variety of steels differing in their properties. their properties.
We’d better have acquaintance of We’d better have acquaintance of the the process, constituents, properties and process, constituents, properties and applicationapplication to make good use of them. to make good use of them.
This chapter mainly deals with This chapter mainly deals with the the technical propertiestechnical properties and and criteria of the criteria of the steelsteel, and , and its selectionits selection..
SignificanceSignificance