Advantages
a. Better surface finish
b. Better dimensional tolerances.
c. Reduced Machining.
d. Less foundry space required.
e. Low labor costs.
f. Castings require little or no machining.
g. Can be completely automated for mass production.
h. High productivity.
i. Complex shapes can be made as there is no need to withdraw the pattern
j. Very fine details and thin sections can be obtained.
k. Since there is no parting line the dimensions across will not vary.
l. Sand: metal ratios are relatively low.
m.Has better flexibility in design than die-casting.
n. Moulds are lightweight and may be stored for extended periods of time.
Disadvantages
a. The raw materials are relatively expensive.
b. The process generates noxious fumes which creates health problems must be removed.
c. The size and weight range of castings is limited.
d. Poor material strength.
e. High porosity possible.
ADV stands for Adverb.
extrusion injection moulding hand lay up spay lay up compression moulding resin transfer moulding
disadvantage of papaya disadvantage of papaya
The process of Injection Moulding Cycle has the following 4 stages:- 1. Clamping- The multiple parts of the mould are securely clamped. 2. Injection- The raw plastic material, usually in the form of pellets, is fed into the machine. During this process, the pellets are melted by heat and pressure. The molten plastic is then injected into the mould by injection unit very quickly and the build-up of pressure packs and holds the material. 3. Cooling- The molten plastic that is inside the mould begins to cool as soon as it makes contact with the interior mould surfaces. As the plastic cools, it will solidify into the shape of the desired part. However, during cooling some shrinkage of the part may occur. The packing of material in the injection stage allows additional material to flow into the mould and reduce the amount of visible shrinkage. The mould can not be opened until the required cooling time has elapsed. 4. Ejection- After sufficient time has passed, the cooled part may be ejected from the mould. When the mould is opened, a mechanism is used to push the part out of the mould. Force must be applied to eject the part because during cooling the part shrinks and adheres to the mould.
Any disadvantage (excepting the radioactivity and the unstability)
Adv. expertise high standing in society trustworthy information flexibility Disadv. no strong economic power no military power
ADV = Avisor Disclosure Vett
What is Adv Technology
adv. although that could be mistaken for adverb.
its a type of moulding :)
bill board adv. who “do u do billboard adv. in this area if not who does”
A bed moulding is a moulding in architecture of a cornice immediately below the cornea.
The resulting moulding with incomplete filling of the plastic resin is called in practice as short moulding.
moulding in agriculture is where scrapped in heaped up around a small surface of a plant
Joshua Moulding is 6'.
What is 3 benefit for moulding
apace adv. [poet] brisk adj. briskly adv. expeditious adj. expeditiously adv. mobile adj. nippy adj. (Brit.) [sl.] prompt adj. quick adj. quickly adv. rapid adj. rapidly adv. slippy adj. spanking adj. speedily adv. speedy adj. swift adj. swiftly adv.