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Q. What do you mean by Compression moulding?
In compression molding, a material normally in power or perform shape , is loaded directly into the hot die cavity, pressure from 150 to 700 kg/cm2 is applied , held for a curing period and then the finished part is ejected. Press stays closed while the heat cures hardens and sets the plastic part. The time for curing depends upon the design, small thin-wall pieces require as little as 20 seconds. The curing temperature is to the order of 200 C. Compression molding is largely utilized for molding thermosetting materials.
A measured amount of power plastics is placed in the power female cavity continuously heated by steams or electricity. The movable bolster is raised so that the female mold portion contacts the male die which also is heated. The combined effect of temperature and pressure causes the plastic to flow into the mold cavity.
Leakage flux : The flux that links the coil only partially passes through the core does not link the coil as the moving or rotating device is called leakage flux.
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Q. How can you implement Permeability test As already defined, permeability of porosity of the moulding sand is the message of its ability to permit air to flow through it.
What is the use of Spindle in Radial drilling machine The spindle holds the drill or cutting tools and revolves in a fixed position in a sleeve.
Gas Porosity Porosity is the presence of gas pockets or voids caused by the entrapment of gas evolved during weld metal solidification. This Porosity is caused due to im
Discover the fixing torques set up at the ends of the shaft: A solid shaft 6.5 m long is securely fixed at each of the end. A torque of 91 Nm is applied to the shaft at a sect
Define External Broaching - Types of Broaching External broaching is employee for machining a flat surface. The broach is in the form of a small length tool mounted on a slider
AUTOMOBILES INDUSTRY GROWTH: The Indian automobile industry has a significant labour cost advantage. India's automotive sector has the world's second largest pool of skilled labou
eqation of continuty of nozzle
What is relative humidity
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