Unit 4
Precision measurement refers to measurement when desired results must be more precise than?
1/64" or 1/100", .5mm, or 1 degree
A strategy of steps needed to perform a machining operation.
Process plan
AISI stands for?
American Iron and Steel Institute
This process occurs when the steel is heated to the hardening temperature by running an electrical current through the material.
Induction hardening
This is a small container mounted on a machine tool with a lid that is opened to add lubricating oil.
Oil cup
These are cylindrical rods with very accurate diameters that can be used to check hole dimensions.
Pin or plug gages
An overall view, commitment, or plan for meeting customer demands is called?
Quality Assurance
This type of steel develops a nearly black outer scale.
Hot rolled steel
When steel is rapidly cooled it is called?
Quenched
This is a fitting used to apply grease to a lubrication point.
Zerk
This device is used to check whether a hole diameter is within tolerance.
Go/no-go plug gage
The actions of inspecting the dimensions of machined parts to make sure tolerances are met is called?
Quality control
The carbon content of cast iron is?
1.7-4.5%
This process will decrease the steel's hardness, increase toughness, and relieve some internal stress so that it will be more durable and usable.
Tempering or drawing
Soluble oils are also known as?
Emulsifiable or water-miscible
Ra surface roughness can be measured with a?
Profilometer
This figure shows the amount of variation of each sampling.
R-chart or range chart
Which stainless steel is the most corrosion resistant?
Austenitic
Ferritic
Martensitic
Austenitic
This process is performed by heating aluminum alloys to around 300 degrees to artificially speed up the aging process.
Precipitation heat treatment
This tool is used to monitor and maintain proper fluid concentrations.
Refractometer
This tool is shaped like a "T" and has two arms that expand when the locking screw is loosened.
Telescoping Gage
Statistical process control plots data on two types of charts to analyze trends in part variation. They are called?
Control charts
Brass is an alloy of what two metals?
Copper and Zinc
This scale is used to designate the hardness of nonferrous metals and steels before machining and heat treatment.
Brinell hardness scale
This method is a mist system that uses lower air pressure to deliver the smallest fluid concentration required to provide adequate tool lubrication and cooling.
Minimum Quantity Lubricant (MQL)