Die grooving

When 6, die groove angle is small, die widdr between die two maxima, W, on eidrer side of a surface groove is obtained from die values... 

Die bore Die chamfer Die groove Die height/ overall length Die lock Die outside diameter Die taper... 

Propeller-twi.sted ba.se pairs. Note how die hydrogen bonds between ba.ses are distorted by diis modon, yet remain intact. The minor-groove edges of die ba.ses are shaded. 

A 25-cm long piece of lead tube is closed at one end by means of a wooden mallet and filled with a pyrotechnic formulation. The tube is tapped on a firm base while filling until it is filled completely. Then the open end is closed with a wooden mallet. The filled tube is then passed successively through 7 grooves and corresponding dies of a lead fuse machine. The lead tube is passed through the dies in descending order of the diameter 0.653, 0.584, 0.533, 0.490, 0,450, 0.422 and... 

Wi th a steel shoe raised to the height of 1 m, spread a 7 g sample of the explosive evenly in and about the grooved portion of the anvil, and allow the shoe to strike the sample with glancing blows until it comes to rest. Clean die anvil and shoe, place another portion of die same expl and continue the test Repeat.test a tot si of 10 times and report the number of snaps, cracklings, ignitions, and/or explosions, if the sample detonates of ter 1 or 2 trials, discontinue the test in Older to prevent damage to the apparatus. Such an explosive is considered os not passing die permissibility test. If the expl remains unaffected In 10 trials with the... 

Figure 3.9 Screw and die characteristic curves for a grooved feed 45 mm diameter extruder for PE-LD.

Figure 6.4 Simplified view of a heart shaped parison die head (left) and grooved core parison die...

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