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Shielded metal arc welding (SMAW), also known as manual metal arc welding (MMA or MMAW), flux shielded arc welding [1] or informally as stick welding, is a manual arc welding process that uses a consumable electrode covered with a flux to lay the weld.
Technical-Vocational Education was first introduced to the Philippines through the enactment of Act No. 3377, or the "Vocational Act of 1927." [5] On June 3, 1938, the National Assembly of the Philippines passed Commonwealth Act No. 313, which provided for the establishment of regional national vocational trade schools of the Philippine School of Arts and Trades type, as well as regional ...
By 1916, all four levels of high school courses were taught. [9] A new school building was built in 1929 on the present site of Ilocos Norte College of Arts and Trades. In June 1941 that building was razed by fire, and classes were subsequently held in the grandstands of the provincial grounds and in local rented houses.
A submerged arc welder used for training Close-up view of the control panel A schematic of submerged arc welding Pieces of slag from submerged arc welding exhibiting glassy surface due to silica (SiO 2). Submerged arc welding (SAW) is a common arc welding process. The first SAW patent was taken out in 1935.
Arc welding power supplies can deliver either direct (DC) or alternating (AC) current to the work, while consumable or non-consumable electrodes are used. The welding area is usually protected by some type of shielding gas (e.g. an inert gas), vapor, or slag. Arc welding processes may be manual, semi-automatic, or fully automated.
In 1920 the first batch of students of the four-year trade curriculum graduated. The shop courses offered then were Woodworking, Building Construction and Automotive. In 1929 – 1930, the Pangasinan Vocational High School emerged as an offshoot of the merger of Home Economics Education, Normal Training Department and Trade Courses Program.
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