210 511 Materials 30 Option

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Uploaded: 12.07.2013
Content: 30712202501470.rar (30,67 kB)
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Description

Task 1
Assign the mode of heat treatment of cold stamping die steel U10. Bring him study and describe the structure and properties of the stamps. Explain why of the steel dies are made of a small section.
Task 2
As a result of thermal and chemical-thermal treatment of worms need to get a solid wear-resistant surface layer in the viscous core. For the manufacture of selected steel 12H2N4VA. Specify the composition of the steel and steel group, specify the destination. Give and justify the regime of thermal and chemical-thermal treatment, explaining the effect of doping on the transformations occurring at all stages of processing the steel. Describe the microstructure and properties of worms in finished form.
Activity 3
Assign a stainless steel for the manufacture of parts operating in acetic acid at a temperature up to 40 0C. Shows the chemical composition of the steel, the necessary heat treatment, and the resulting structure. Explain the corrosion resistance of the material, and the role of each of the alloying element
Task 4
Assign a brand aluminum bronze for the manufacture of small critical parts (bushings, flanges, etc.). Specify its composition, describe the structure using the phase diagram of copper - aluminum and basic properties of bronze.
Task 5
Which began to apply annealing granular perlite? Explain the choice of treatment and the aim of this type of treatment

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