Garbuzova KR1 Option 44

Product description

Option 44

• What is segregation? Causes of its occurrence and ways of elimination.
• Whether metal hardening is preserved, if plastic deformation is carried out at

Temperature above the recrystallization temperature? Give a detailed explanation.

• Draw a diagram of the iron-iron carbide state, indicate the structural

Components in all areas of the diagram, describe the transformations and construct a curve

Cooling (using the phase rule) for an alloy containing 5.2% C. What is the structure of this

Alloy at room temperature and how such an alloy is called?

• Using the state diagram, iron-iron carbide and the hardness change curve in

Depending on tempering temperature, assign a hardening temperature for carbon steel 40 and

Tempering temperature required to provide a hardness of 450 HB. Describe the transformations,

Which occurred in the steel during the quenching and tempering process, and obtained after the thermal

Processing structure.

• Taps of steel U10 are hardened: the first - from the temperature of 760 ° C, and the second - from

Temperature 850 ° C. Apply the selected temperatures to the iron-cementite state diagram

Heat and explain which of these taps is hardened correctly, has higher cutting

Properties and why.