Given exhaustive answers to 5 questions 9 option 2 control work on material for the training manual Garbuzova NE
1. For the manufacture of steel dies selected U11A. Assign the mode of heat treatment, provide justification and specify struktu¬ru and properties of plates in finished form.
2. For the manufacture of steel hammer dies selected 5XHB. Specify the structure, assign and justify the regime of thermal treatment, explaining the effect of doping on the transformations occurring in the ter¬micheskoy treatment of the steel. Describe the structure and main svoyst¬va dies after heat treatment.
3. Describe the characteristics of heat resistance, the deformation and fracture of alloys operating under long-term loading at elevated temperatures.
4. To fill the liner responsible plain bearings selected alloy B83. Specify the composition of the alloy, and define the group of nazna¬cheniyu. Sketch and describe the microstructure of the alloy. The basic requirements to be met by babbitt.
5. Textolites. Influence of cotton, glass and asbestos cloth on the properties of plastics. Specify the scope of the PCB in mechanical engineering.
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