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Garbuzova KR2 Option 22
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1. Assign a quenching temperature, cooling medium and tempering temperature chisel from
Steel U7. Describe the nature of the transformations that occur, the microstructure and hardness
Tool after heat treatment.
2. As a result of heat treatment, the levers should receive increased strength
Over the entire section (hardness 28 ... 35 HRC). For the manufacture of their chosen steel 35 XMA. Please specify
Composition and determine the steel group for its intended use. Assign a heat treatment mode,
Give its justification. Describe the microstructure and properties of steel after thermal
Processing.
3. For the manufacture of parts of rolling bearings (rollers, balls, etc.), steel
SHKh9. Specify the composition, assign and justify the heat treatment mode, explaining the effect
Doping for transformations occurring during the heat treatment of a given steel. Describe
Microstructure and properties of steel after heat treatment.
4. For the manufacture of aircraft parts, the alloy VT22 is chosen. Specify the composition and
Mechanical properties of the alloy. Describe how the alloy is hardened and
Explain the nature of hardening.
5. Wood materials. Indicate their properties, advantages and disadvantages, as well as the area
Applications in engineering.
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