• 1. Built up edge is a wear pattern that can occur when machining. Which of the following is an incorrect method to prevent it?

  AUse an insert geometry with a larger honing. BIncrease the cutting speed. CUse an insert with a larger rake angle.

• 2. Notch wear is a wear pattern that is commonly experienced when machining stainless steels. Which of the following is an incorrect method to prevent it?

  AIncrease the lead angle of the insert. BUse a lower depth of cut. CIncrease the insert corner radius and set the depth of cut under the value of the corner radius.

• 3. As the carbon content in carbon steels increases what affect does this have on the cutting edge?

  AAs the carbon content increases so too does the amount of flank wear. BAs the carbon content increases the chip control becomes more difficult. CAs the carbon content increases welding becomes more apparent.

• 4. For alloy steels, as the alloying elements are added then the characteristics of the workpiece change. If excessive chrome is alloyed what affect does this have?

  ABecomes softer and easier to machine. BBecomes harder and forms hard particles within the workpiece. CHas no effect at all.

• 5. When machining P class workpiece materials it is necessary to select a cutting tool that offers;

  AHigh impact resistance (WC-Co) type carbides. BHigh heat resistance (WC-TiC-Co) type carbides.

• 6. When machining M class workpiece materials it is necessary to select a cutting tool that offers;

  AA high heat resistance type carbide with a sharp cutting edge. BA high heat resistance type carbide with a blunt cutting edge. CA high impact resistance type carbide with a sharp cutting edge.

• 7. When machining K class workpiece materials, short chips are generated and as such cutting resistance and chip control need not to be taken into consideration, however the cutting edge is subject to vibrations and therefore;

  ASharp cutting edge strength is required. BHigh cutting edge strength is required. CHigh rake angle is required.

• 8. When selecting a tool for the machining a S class workpiece materials it is necessary to;

  APrevent cutting edge temperatures and cutting resistance from increasing. BTo ensure that forced chip breaking is correctly carried out. CUse a negative rake angle.

• 9. Relating to heat treatment, which of the following is correct?

  AHeat treatment is a controlled process in which steel is heated and cooled so as to change the physical and mechanical properties. BHeat treatment is a controlled process in which steel is heated and cooled so as to improve the chip breaking properties of a steel. CHeat treatment is a controlled process in which steel is heated and cooled so as to only change the mechanical properties of a steel.

• 10. Heat treatment of ferrous materials is dependant upon the amount of;

  ACarbon within the structure. BThe amount of iron within the structure.
• Next
• Try again

Result