What factors should you bear in mind when conducting a plastic welding procedure?
What will be an ideal response?
| 1. | Plastic welding rods are frequently color-coded to indicate their material. Unfortunately, the coding is not uniform among manufacturers. It is important to use the reference information provided. If the rod is not compatible with the base material, the weld will not hold. |
| 2. | Too much heat will char, melt, or distort the plastic.Too little heat will not provide weld penetration between the base material and the rod. |
| 3. | Too much pressure stretches and distorts the weld. |
| 4 | The angle between rod and base material must be correct. If too shallow, a proper weld will not be achieved. |
| 5. | Use the correct welding speed.If the torch movement is too fast, it will not produce a good weld. If the tool is moved too slowly, it can char the plastic. |
You might also like to view...
A correction factor is used for the ampacity of conductors in installations where the operating temperature is above ____ degrees Fahrenheit.
A. 32 B. 68 C. 86 D. 100
Answer the following statement(s) true (T) or false (F)
1. A cut penalty of 7 indicates that a pair of animals is highly similar. 2. When three cuts for a class total 14 points, the middle cut cannot exceed 8 points. 3. The Hormel judging slide was created and copyrighted in 1985. 4. Only the National FFA Organization provides Hormel computing slides. 5. In large state and national livestock contests, scoring is done by computer.
In the case of heart fibrillation, a(n) _________________ is a device that uses electric current to attempt to shock the heart back into a normal rhythm.
A. cardiopulmonary resuscitator B. automated external defibrillator C. electrocardiogram D. none of the above
When erecting a gable roof, which portion of the rafter is nailed to the ridgeboard?
a. the bird?s mouth b. the plumb cut c. the tail cut d. the seat cut