Podcast
Questions and Answers
What is the Intensification Ratio if the injection cylinder diameter is 8 inches and the screw diameter is 2.5 inches?
What is the Intensification Ratio if the injection cylinder diameter is 8 inches and the screw diameter is 2.5 inches?
- 10.24 (correct)
- 21.1
- 3.2
- 10
If the peak pressure at transfer is 15,000 psispec and there is a twenty percent rise in viscosity, what is the new peak pressure?
If the peak pressure at transfer is 15,000 psispec and there is a twenty percent rise in viscosity, what is the new peak pressure?
- 15,000 psispec
- 20,000 psispec
- 18,000 psispec (correct)
- 12,000 psispec
A mold contains four cavities and a hot runner. Each part is round (6 inches in diameter) with a 0.500 inch hole With a tonnage factor of three tons per square inch, what is the minimum required clamp force to support the mold?
A mold contains four cavities and a hot runner. Each part is round (6 inches in diameter) with a 0.500 inch hole With a tonnage factor of three tons per square inch, what is the minimum required clamp force to support the mold?
- 300 tons
- 100 tons
- 200 tons
- 400 tons (correct)
Flashcards
Intensification Ratio
Intensification Ratio
The ratio of the area of the injection cylinder to the area of the screw, calculated as (cylinder diameter / screw diameter)^2.
Peak pressure with 20% viscosity increase
Peak pressure with 20% viscosity increase
If the peak pressure at transfer is 15,000 psispec and there was a twenty percent rise in viscosity, the new peak pressure at transfer would potentially be 18,000 psispec.
Minimum Required Clamp Force
Minimum Required Clamp Force
The minimum required clamp force needed to support a mold with four cavities, each a 6-inch diameter circle with a 0.5-inch hole, given a tonnage factor of three tons per square inch.
Study Notes
- The diameter of the injection cylinder is 8 inches, and the diameter of the screw is 2.5 inches
- Intensification Ratio is 10.24
- The peak pressure at transfer is 15,000 psispec and there was a twenty percent rise in viscosity
- The new peak pressure at transfer is 18,000 psispec
- A new mold has four cavities and a hot runner
- Each part is round with a diameter of 6 inches and has a hole with a diameter of 0.500 inch in the center
- With a tonnage factor of three tons per square inch, the minimum required clamp force needed to support this mold if using a 400-ton machine is 400 tons
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