Process for manufacturing a slotted hole screen

Details Process for manufacturing a slotted hole screen Process for manufacturing a slotted hole screen

1990-12-07

1993-08-17

Shaw, Clifford C.

Electric heating

Metal heating

By arc

291636, 219 58, B23K 900

Patent

active

052371549

ABSTRACT:
A process for manufacturing a slotted hole screen made by mechanically joining a plurality of longitudinal members to a plurality of cross bars reduces joint roughness, burrs and recesses by including a step of covering the joints with a covering material which has a smooth exterior surface. The covering material is liquefied and has sufficient surface tension to form the smooth surface. In an alternative embodiment, the joints in a slotted screen formed by welding a plurality of longitudinal members to a plurality of cross bars are smoothed by selectively remelting the joints to form the smooth exterior.

REFERENCES:
patent: 3370150 (1968-02-01), Nordgren
patent: 4221319 (1980-09-01), Paice
patent: 4221951 (1980-09-01), Connolly

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