QUESTIONS 1. What constraints are necessary for biaxial rotation to evenly coat

Question

QUESTIONS 1. What constraints are necessary for biaxial rotation to evenly coat the mold in a rotational molding process? 2. Discuss three ways to alleviate the sticking of a part to the molá. 3. £xplain how polyethylene is crosslinked in a rotomolding operation. 4. Describe a technique for forming a part with an outer coating and a different inner material using rotomolding. 5. Why is there a limit on the thickness of parts that can be reasonably made by 6. 7. What is the major limitation on the distance between walls in a doubie-walled ca 8. Give five part characteristics that indicate a poorly fused part. rotomolding? Describe why fillers and other additives may increase or, in some cases, decrease rotomolded part mechanical properties. rrying case made by rotational moiding?

Explanation / Answer

ANSWER:

1. Biaxial turning round must encompass both axes revolving at the same time. The incidence of rotary motion ought to be diverse for every partnership, and the rotating frequencies ought to not be yet multiples of every additional.

2.prefer material prudently according to kind objectsadd to speed of cast so that cloth doesn't attach to it.

3. In rot mold, polyethylene is filled in cast and then shape is rotate bi-axially. So so as to within the mold polyethylene will too move in cast and will take figure of the mold. at the present due to turning surrounding in two instructions polyethylene molecules will get irritated connected. as of range outer surface high is provide which will in turn increase air force inside. This greater than before air force will too help in irritated between of polyethylene molecules.

4. This is two period process, First by means of external fabric, a part is complete from rotomolding action. behind implementation development, part be not aloof from the die and new central textile is filled contained by the roto pattern. So yet again pattern is bi-axially rotate and to finish part by way of two similar material at interior and outer is generate in roto style.

5. because we be familiar with that this process largly depends upon bi-axial turning round of mould and due to that turning round, material fine particles inside get centrifugal force absent from hub and it try to attach to the mold wall due in the direction of high hotness and pressure. So so as to present is restraint is wall width because if high width is requisite then part force can get summary.

8.part meandensity temperature thaw out Index Weight of resin

9. In part presentation weight of resin charge is significant beacause when cast is revolving in bi-axial dircetion, due to burden of resin, some power will be relevant on cast wall and this force will create the resin is stick to the mold barrier.

10. owing to far above the earth melt index resin will contain high pour. because this part is compicated, we necessary high flow trait so so as to resin can reach to the all the piece of the mold. We will use far above the soil melting catalog 30.

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