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Suction Blow: Suction blow molding (SIG) is a process where the parison is ejected into the closed mold and "sucked" through the mold via an air system provided by a blower system. After exiting at the lower end of the mold the parison is squezzed of by closing devices and the inflation and cooling process follow. The suction blow molding process only requires simple and unexpensive molds.

(Micheal Thielen,Extrusion Blow Molding, pg. 84)

Solid Foil Polymerization: The process is based on complete polymerization of semipolymerized plastic foil on exposure to suitable light source. The semipolymerized foil is first stacked on previously solidified part and illuminated such that bonding is achieved after complete polymerization. The excess foil which is not illuminated can be removed by dissolving into suitable solvent leaving behind the desired part.

(Narenda B. Dahorte, Sandip P. Harimkar,Laser Fabrication and machining of materials, pg. 358)

Polycrystalline Cubic Boron Nitride: Polycrystalline Cubic Boron Nitride is next to diamond on the hardness scale. It is used in the manufacturing industry as a superhard abrasive tool and as a cutting tool. As a cutting tool. PCBN is most commonly used for the machining of hardened steels, tools steels, hard cast irons, and hardfacing alloys.

( Edmund Isakov,Cutting Data For Turning of Steel, pg. 119)

Electro Hydraulic Forming: Electro Hydraulic Forming, also known as electro-spark forming is a process whereby electrical energy is converted directly into work. Electro hydrolic forming is a variation of older, more general and explosive forming method. The only fundemantels differnce between these two techniques is the energy source and subsequently, the practical size of the forming event. The forming equipment for this process is similar to explosive forming equipment but pressure is obtained form a spark gap instead of an explosive charge.

Advantages:

1. Very large capacitor baks are needed to produce the same amount of energy as a modest mass of high explosives. This makes electrohydraulic forming very capital intensive for large parts.

2. The electro hydraulic method was seen as better suited to autonomation because of the fine control of multiple, sequential energy discharges.

3. Relative compactness of the electrode-media contained system compared to explosive.

4. This process is safe to operate.

5. Low die cost

6. Low equipment cost

7. The energy rates can also be controlled closely.

Limitations:

Materials having critical impact velocities below 30 m/sec are not participal for hydraulic forming.

Applications:

This process can be used to accomplish bulging, beading, drawing, blanking and piercing. A wide range of full and part size materials can be formed.

(Gowri,Manufacturing Technology- I, pg. 344, 345)