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The Draw Down Ratio is the ratio between the area between the die opening and the external diameter of the tip.
Example:
Tube with an Outer Diameter (OD) of 5.0 mm, and an Inner Diameter (ID) of 4.0 mm, that is a wall thickness of 0.5 mm.
Tooling: Tip external diameter (Tod) of 5.0 mm. Die diameter (Dd) of 7.0 mm
Equation: DDR = (Dd2 - Tod2)/(OD2 - ID2) = (49 - 25)/(25 - 16) = 2.67
The DDR, basically gives you an idea of how much you can stretch the material. Different Polymers have different limits as to how high a DDR can be.
NOTE: DDR should not be confused with DRB (Draw Ratio Balance) which is a measure of how "tight" you will get a coating, say while coating a cable.
What else can I help you with?
Do you caluclate the volume of the ball in cubic meters?
No
What is limiting draw ratio?
Limiting draw ratio is a measure used in plastic processing to determine the maximum extent to which a material can be stretched without breaking during the production of a film or fiber. It is calculated by dividing the diameter of the extruded material by the die diameter. Materials with a higher limiting draw ratio can be stretched more before breaking.
How do you caluclate acceleration?
a=dv/dt a=acceleration v=velocity t=time.
What caluclate means in maths?
Calculate means to determine (the amount or number of something) mathematically.
Can you put down a Draw 4 card on top of a Draw 2 card in the game?
No, you cannot put down a Draw 4 card on top of a Draw 2 card in the game.
HOW TO DRAW an octagon?
draw a small short line, then draw another one pointing down right. the down, the down left then left then up left, the up and connect the 2 lines.
Can the alt draw the battery down with key off?
can a bad alt draw the battery down with the key off
What are the release dates for Draw Down the Moon - 2013?
Draw Down the Moon - 2013 was released on: USA: September 2013
Draw down a veil?
wimple
How do you create three different drawings showing a number of circles and triangles in which the ratio of circles to triangles is 2 to 3?
To create three different drawings showing a number of circles and triangles in which the ratio is 2:3 you can: Start with an equilateral triangle, draw a circle inside it, draw an equilateral triangle inside the circle, draw a circle in the triangle and then draw an equilateral tiangle in the smallest circle. Or, you could draw 3 triangles and 2 circles in a line. Or, you could draw 3 triangles on a line with 2 circles between them.
What is the ratio of 17 to 48?
Since the antecedent of the ratio is prime, it is impossible to cancel this ratio of 17:48 down any further.
How do you caluclate mass with volume and density?
It's quiet simple really all you do is: Volume X Density= Mass
