- Arts & Culture 5982
- Business & Economics 690
- Computers 313
- Dictionaries & Encyclopedias 82
- Education & Science 76741
- Abstracts 226
- Astrology 4
- Astronomy 1
- Biology 8
- Chemistry 2793
- Coursework 15846
- Culture 8
- Diplomas 411
- Drawings 673
- Ecology 5
- Economy 82
- English 78
- Ethics, Aesthetics 3
- For Education Students 17577
- Foreign Languages 11
- Geography 3
- Geology 1
- History 89
- Maps & Atlases 5
- Mathematics 13869
- Musical Literature 2
- Pedagogics 19
- Philosophy 23
- Physics 15074
- Political Science 5
- Practical Work 101
- Psychology 59
- Religion 4
- Russian and culture of speech 8
- School Textbooks 7
- Sexology 42
- Sociology 9
- Summaries, Cribs 87
- Test Answers 155
- Tests 8959
- Textbooks for Colleges and Universities 32
- Theses 24
- To Help Graduate Students 14
- To Help the Entrant 37
- Vetting 364
- Works 13
- Информатика 10
- Engineering 3059
- Fiction 694
- House, Family & Entertainment 105
- Law 133
- Website Promotion 71
Garbuzova KR1 Option 08
Refunds: 0
Uploaded: 08.04.2021
Content: mat_v08.rar 179,97 kB
200 $ | the discount is | 15% |
show all discounts | ||
1 $ | the discount is | 1% |
Seller will give you a gift certificate in the amount of
Product description
Option 8
1. What is the essence of the process of modification? Give an example of use
Modifiers for improving the properties of foundry aluminum alloys.
2. What is the difference between cold and hot plastic deformation? Describe
Features of both types of deformation.
3. Draw a diagram of the iron-iron carbide state, indicate the structural
Components in all areas of the diagram, describe the transformations and construct a curve
Cooling (using a phase rule) for an alloy containing 5.0% C. What is the structure of this
Alloy at room temperature and how such an alloy is called?
4. Carbon steel 35 and U8 after quenching and tempering have a martensite structure
Tempering and hardness: the first 45 HRC, the second - 60 HRC. Using the iron-
Iron carbide and taking into account the transformations occurring during tempering, indicate the temperature
Quenching and tempering temperature for each steel. Describe the transformations taking place in these
Steels in the quenching and tempering process, and explain why steel U8 has a greater hardness than
Steel 35.
5. Steel 40 was quenched from temperatures of 760 and 840? C. Using the chart
State of iron-cementite indicate which structures are formed in each case. Explain
Reasons for the formation of different structures and recommend the optimal mode of heating for quenching
Of this steel.
Feedback
0Period | |||
1 month | 3 months | 12 months | |
0 | 0 | 0 | |
0 | 0 | 0 |