Task 8.
Date: 2015-10-07; view: 352.
Task 7. Match the beginnings of the sentences with their endings.
| beginning | ending | ||
| Breakage of the cutting edge caused by overloading, heavy shock loads, or improper tool design... | ... is not normal wear and should be corrected. | ||
| However, if the rate of crater growth is rapid, ... | ... leading to a short tool life, corrective measures must be taken. | ||
| Cemented carbide tools can operate successfully at higher cutting speeds, where the built-up edge ... | ... does not occur and where a good surface finish is obtained. | ||
| Whenever possible, cemented carbide tools should be operated ... | ... at cutting speeds where a good surface finish will result. | ||
| The best measure of tool wear ... | ... is flank wear. | ||
| When the depth of cut is uneven the bottom edge ... | ... of the wear land may become somewhat slanted. | ||
| When a sharp tool is first used, the initial amount of flank wear is ... | ... quite large in relation to the subsequent total amount. | ||
| Under normal operating conditions, the width of the flank wear land will increase at a uniform rate ... | ... until it reaches a critical size after which the cutting edge breaks down completely. | ||
| The most effective way to eliminate the built-up edge is to ... | ... increase the cutting speed. | ||
| Often the size of the wear land ... | ... is enlarged at the nose of the tool. |
1. creating
2. sharpening
3. than
4. diamond
5. expensive
6. stones
7. reduces
8. provided
9. softer
10. material
11. exposed
12. lubricated
13. water
14. polishes
15. disadvantage
16. easier
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| Task 5. 1-T, 2-F, 3-F, 4-T, 5-F, 6-T, 7-T, 8-F, 9-T, 10-F | | | Grammar |