This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Discuss why the compression zone of a nylon-type screw is so much shorter than the compression zone ... (Read 96 times)

mpobi80

  • Hero Member
  • *****
  • Posts: 519
on: Aug 19, 2018
Discuss why the compression zone of a nylon-type screw is so much shorter than the compression zone in a polyethylene-type screw.
 
  What will be an ideal response?

Question 2

Describe a spider die. What adjustments are typical and how are they made?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

popopong

  • Sr. Member
  • ****
  • Posts: 307
Reply #1 on: Aug 19, 2018
Answer to Question 1

Nylon melts over a much narrower range than polyethylene. Since the purpose of the compression zone is to melt the polymer, the distance to do the melting need not be as long with the more easily melted nylon.

Answer to Question 2

Spider dies are used to make hallow parts, such as tubes and pipes. The inside diameter of the die decreases gradually and smoothly from the inlet of the die to the land. The land is the final output zone and in this zone the inside diameter of the die is constant. The mandrel inside the die


mpobi80

  • Member
  • Posts: 519
Reply 2 on: Aug 19, 2018
Great answer, keep it coming :)

Laurenleakan

  • Member
  • Posts: 309
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

Did you know?

There are more sensory neurons in the tongue than in any other part of the body.

Did you know?

Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

Did you know?

Women are 50% to 75% more likely than men to experience an adverse drug reaction.

Did you know?

During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

A typical fuel pulsator used mostly with roller vane-type pumps to help even out the pulsation in ... A typical fuel pulsator used mostly with roller vane-type pumps to help even out the pulsation in ...
Basic molecular mechanisms of delayed-type hypersensitivity. Basic molecular mechanisms of delayed-type hypersensitivity.
Action of a type II topoisomerase Action of a type II topoisomerase
Rock Type Influences Weathering Rock Type Influences Weathering
Each allele of codominant genes is fully expressed in heterozygotes. Type A blood has A antigens on Each allele of codominant genes is fully expressed in heterozygotes. Type A blood has A antigens on
Wild-type flowers of Arabidopsis Wild-type flowers of Arabidopsis
Video: Pericarditis

For a complete list of videos, visit our video library