What is machinability of steel?
What is machinability of steel?
Machinability is the ease with which a metal can be cut (machined) permitting the removal of the material with a satisfactory finish at low cost. Materials with good machinability (free machining materials) require little power to cut, can be cut quickly, easily obtain a good finish, and do not wear the tooling much.
What steel is easy to machine?
Type 303 stainless steel is probably the easiest 300 series to machine. It is much easier to machine than 304. That makes grade 303 steel the first choice for fittings, gears, and fasteners where tight tolerances are a must.
What determines the machinability of a metal?
Machinability of a metal is influenced by the machine variables (rigidity, power and accuracy of machine), tool variables (tool material, geometry and type of cut), cutting conditions (speed, feed and depth of cut) and the work material properties.
What is a good machinability rating?
The machinability rating is determined by measuring the weighed averages of the normal cutting speed, surface finish, and tool life for each material. Machinability rating less than 100% is more difficult to machine than B1112 and material with a value more than 100% is easier.
What is the machinability of the material?
Machinability defines the ease at which a material (mainly metal) can be cut or shaped while providing a satisfactory surface finish. A material with good machinability requires little power to cut, produces a smooth surface finish and minimizes wear on the tooling.
What is a good machinability?
A material with good machinability requires little power to cut, produces a smooth surface finish and minimizes wear on the tooling. By contrast, a material with poor machinability requires more power to cut, gives a poor surface finish and wears the cutting tool.
Why should engineering steel have a machinability property?
Low fracture toughness contributes to easy crack propagation which results in reduction in the difficulty of producing broken chips. Hence, a low fracture toughness value makes a material easier to machine, showing a good machinability.
What is the machinability of carbon steel?
Machinability of metals. Machinability depends on the physical properties and the cutting conditions of the material. Machinability can be expressed as a percentage or a normalized value. The American Iron and Steel Institute (AISI) has determined AISI No. 1112 carbon steel a machinability rating of 100%.
What does the machinability rating of a metal mean?
The metal with a machinability rating smaller than 100% means it is more difficult to machine than B-1112 (carbon steel 1212) and materials with a rating larger than 100% indicates it’s easier to be machined. Here are some tables list the machinability of a wide range of metals.
What is machinability and why is it important?
Machinability is defined as the ease with which a metal can be machined. Simply stated, it is the ease with which steel chips can be removed in various machining operations while retaining a satisfactory finish. Generally, the machinability of steel decreases with increasing mechanical performance.
What is the machinability of AISI 1112 carbon steel?
Machinability can be expressed as a percentage or a normalized value. The American Iron and Steel Institute (AISI) has determined AISI No. 1112 carbon steel a machinability rating of 100%. Machinability of some common materials related to AISI No. 1112 are indicated in the table below:
