Materials kontrolnaya2 / variant19 on Garbuzova

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Given exhaustive answers to questions 19 5 Option 2 control work on material for the training manual Garbuzova NE

1. Select the carbon steel for the production of drinking. Assign the mode of heat treatment, describe the essence of the pre¬vrascheny, structure and properties of the instrument.

2. For the manufacture of parts of stamps, processing hot metal, steel 5HNMA selected. Specify the structure, assign and justify the regime of thermal treatment, explaining the impact on legirova¬niya transformations occurring during heat treatment of steel. Describe the microstructure and properties after heat treatment of dies.

3. Assign a stainless steel for use in low aggressive media (aqueous solutions of salts and the like). Shows the chemical composition of the steel, the necessary heat treatment, and the resulting structure. Explain the physical nature of the corrosion resistance of steel, and the role of each alloying element.

4. For the skin of the aircraft used alloy VT6. Lead alloy composition, heat treatment conditions and hardening the resulting structure. Describe the processes that occur during heat treatment. What advantages does the alloy VT6 VT5 compared to?

5. Plastics. The composition and structure. The use of plastics in foundry.


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