Given exhaustive answers to questions 39 5 Option 2 control work on material for the training manual Garbuzova NE

1. Steel products to be subjected to 40X improvement. Assign the mode of heat treatment, describe the essence of the transformations, the structure and properties of the steel.

2. For the production of trimming dies selected steel H6VF. Specify the structure, assign and justify the regime of thermal treatment, explaining the effect of doping on the transformations occurring during heat treatment of steel. Describe the structure and properties dies after heat treatment.

3. For the resistance heating elements selected alloy Nichrome H20N80. Specify the composition and requirements for this type of alloys. Bring the temperature limits of the application of this alloy.

4. castings of complex configuration is used BrO10F1 bronze. Specify the composition of the alloy, its structure and assign the mode of heat treatment to relieve internal stresses arising after casting.

5. Describe the basic properties of ceramic and the area of \u200b\u200bits application in engineering.