Search results
Results from the WOW.Com Content Network
A technique sometimes used is the use of a large soldering-iron tip designed to melt the solder on all pins at once; different tips are required for different packages. The component is removed while the solder is molten, most easily by a spring-loaded puller attached to it before heating.
Within the SAT&LC, the union argued against representation for black workers, and in 1947 it resigned over the issue. The following year, it was a founding affiliate of the all-white Co-ordinating Council of South African Trade Unions, and then from 1957 part of the larger South African Confederation of Labour (SACOL). By 1976, it had 36,000 ...
ArcelorMittal South Africa is part of the steel company Arcelor-Mittal. [ 1 ] [ 2 ] The company was originally Iscor Ltd. , a South African parastatal steel company. It was founded in 1928 and was first listed on the JSE Securities Exchange in 1989.
It was used to secure cast iron railings and balusters in pockets in stone bases and steps. Does not contract on cooling. Bi 46 Sn 34 Pb 20: 100: 105 [16] Pb: No: Bi46: Sn 48 Bi 32 Pb 20: 140: 160 [17] Pb: No: For low-temperature soldering of heat-sensitive parts, and for soldering in the vicinity of already soldered joints without their ...
A soldering station has a temperature control and consists of an electrical power supply, control circuitry with provision for user adjustment of temperature and display, and a soldering iron or soldering head with a tip temperature sensor. The station will normally have a stand for the hot iron when not in use, and a wet sponge for cleaning.
The Iron Moulders' Society of South Africa (IMS) was a trade union representing metalworkers in South Africa. The union was founded in 1896. [ 1 ] It was strongly focused on the rights of white workers, and sought to exclude others from working as moulders.
Iron metallurgy in Africa concerns the origin and development of ferrous metallurgy on the African continent.Whereas the development of iron metallurgy in North Africa and the Horn closely mirrors that of the Ancient Near East and Mediterranean region, the three-age system is ill-suited to Sub-Saharan Africa, where copper metallurgy generally does not precede iron working. [1]
Properly done, the iron heats the parts to be connected, which in turn melt the solder, guaranteeing adequate heat in the joined parts for thorough wetting. If using solder wire with an embedded flux core, heating the solder first may cause the flux to evaporate before it cleans the surfaces being soldered.