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Q. Explain Moulding Sand for Non-ferrous Casting?
The melting point of non- ferrous metal is much lower than that of ferrous metals. Therefore, the moulding sands for non-ferrous casting may be less refractory and permeable. Also, a smooth surface is desirable on non-ferrous casting. Due to all this, the moulding sands for non-ferrous casting contain a considerable amount of clay and fine grained.
Q. How can you test hardness of the prepared mould? Hardness test: The hardness of the prepared mould surface is tested to check the ramming density of the sand. The instrume
Explain Clamping Devices A clamp is a device that holds the work piece firmly against the locators provided and also resists all forces generated by the cutting action of
Spanners: These are used to tighten and loosen nuts and bolts. These are made according to standard nut and bolt sizes and in vanadium steels. The following types of spanner are u
General Phase of Radial Drilling Machine Steps- 1. Prepare a strong foundation for the value study. In radial drilling machine hole can not be produce in any angle.
Explan the Drive or traction unit Hydrostatic drive is provided for traction with a two speed gear-box. High speed is for travelling and low speed for working. Speed is in
Occupational Health Problems Various health problems have been found to be rooted in type of work, equipment and Workplace. It was eighteenth century while definite observati
Types of Brake The brakes used in motorcycles can be classified as follows: (a) Drum Brake (b) Disc Brake
Cam: This is an integral part of camshaft. A cam is designed in such a way as to open or close the valves at the correct timing and keep them open for the necessary duration.
A smooth sphere of radius 15 cm and weight 2 N is supported in contact with a smooth vertical wall by a string whose length simlar the radius of sphere. The string joins a point on
Evaluate the least pull, through the center of wheel: A uniform wheel having 600 mm diameter, weighing 5KN rests against rigid rectangular block of 150mm height as shown in t
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