Lead casting

Relative ease of hermetic sealing by having the electrical leads cast into molten glass ( glass-to-metal seal ) in ceramic ( ceramic-to-metal seal ), or embedded into thermosetting plastic ... 

Measurement of work capacity using a lead cast method... 

The working capacity of explosives is usually measured/evaluated using lead cast method. This method measures the increased lead-hole volume of the lead cast in the explosion of certain explosives inside the lead hollowness. The configuration and effect are shown in Fig. 2.17. 

In Fig. 2.17, the lead cast is made of fine lead. In the center of lead cast, there is a cylindrical hollowness with 25 mm diameter and 125 mm height. In experiments, the measured explosive with 10 0.01 g is put in the cylindrical hollowness (24 mm in diameter) of aluminum foil. After the detonator is installed, the aluminum foil with detonator is put into the cylindrical hollowness of lead cast. 

Fig. 2.17 Measurement of explosive work capacity using lead cast method, a The configuration of lead cast before test b the effect of lead cylinder after explosion...

Fig. 3.1 Lead cast expansion value of hydrazine nitrate-hydrazine mixture [1]...

Figures 3.1 and 3.2 shows the relationship of oxygen balance with lead cast expansion value and explosion velocity of the hydrazine nitrate-hydrazine liquid explosive. It could be found that, when the oxygen balance of such explosive mixture was -2.4 % (including 10 % of hydrazine), explosion velocity was the maximum while, when the oxygen balance was -31.9 % (including 40 % of hydrazine), its power capability was the maximum.

Casting processes for lead may be divided into pressure die-casting of lead casting for storage batteries sand casting for protective screens. 

The most common non-occupational exposures to lead were from shooting firearms remodeling, renovating, or painting retained bullets (gunshot wounds) and lead casting. 

Does the facility have a forging or die shop that uses lead casts or other uses of lead ... 

The lead block used for the determination of the strength of explosives should be made of soft lead, cast at a temperature 390-4(X) "C. The lead block test configuration is given in Figure 5.2. 

Ore concentrate storage Return sinter transfer Sinter sizes and storage Sinter product dump area Blast furnace roof vents Blast furnace upset Lead casting roof ducts Zinc fuming furnace area... 

Some residual peaks in the spectrum were identified as " Mn, Fe, Co, Co, Co and Co, presumed to be largely reaction products of energetic cosmic rays with copper while it was being manufactured and then stored above ground. The inner copper was replaced by lead cast from ingots of 448 year old lead (some twenty half-lives of Pb) recovered from a Spanish galleon. Peaks from Mn, Co, Co, Co, Co and Zn were still detectable and bremsstrahlung suspected to be... 

Shielding Biological 61 cm iron shot concrete and 122 cm barytes concrete Thermal 10.2 cm lead cast in aluminium segments... 

Lead Cast iron Platinum Gold Aluminum... 

Sizes ranging 10g-50kg. Castings up to 100 kg made in zinc. Copper, tin and lead castings normally less than 5 kg. 

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