Lead charge

The secondary production of lead begins with the recovery of old scrap from worn-out, damaged, or obsolete products and with new scrap. The chief source of old scrap is lead-acid batteries other sources include cable coverings, pipe, sheet, and other lead-bearing metals. Solder, a tin-based alloy, may be recovered from the processing of circuit boards for use as lead charge. 

SQ impact element of the fuze consisting essentially of a firing pin and support and a detonator and lead charge Functioning ... 

Squib No Diameter (In.) Length (In ) Type Bridge Type Lead Charge Weight All Fire Current... 

The container diameter D is given by the equation of the weight G of the lead charge... 

Time-tried lead trap presses work at 300 tons pressure capacity and a lead charge of 30 kg with the container diameter being 82 mm, the stroke 2 x 250 mm and the pump capacity being about 22 H.P. 

The press capacity is 2,650 tons. It takes a lead charge of 450 kg at a container diameter of 400 mm its mandrel-holder diameter is 240 mm and its effective stroke 485 mm. The extrusion ram pressure is approx. 3,250 kg/cm. ... 

In this section we focus on optoelectronic devices that are based on either the emission or the absorption properties of polymer nanofibers, jointly with transport properties that are needed to lead charge-carriers to either radiatively recombine (as in OLEDs) or separate photo-generated excitons to collect charges (as in photo-detectors or solar cells). These nanofiber-based devices combine photonic and charge-transport features of polymer nanostructures. The charge-carrier transport properties of nanofiber materials are described in detail in Chapter 6. 

As of 1979 the United States has discontinued the use of tetryl. No new components are being designed with tetryl, and all components that contained tetryl are being redesigned to eliminate the tetryl. The reason for this action is the relative instability of tetryl after storage at elevated temperatures. Various NATO nations have not discontinued tetryl s use in boosters and lead charges. 

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