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VAZI
Welded Steel Tube from Coil (ERW)
Most everyday steel tube is electric-resistance welded (ERW). Steel strip slit from a coil is bent cold through a row of shaped rolls until its edges meet as a round tube; a current passed across the edges heats them, and rolls squeeze them together into a weld with no filler metal. The bead squeezed out is trimmed off, sizing rolls bring the tube to its final diameter, and a flying saw cuts it to length. Low-frequency current was used from the 1920s until 1970, when high-frequency welding replaced it because it gives a better seam.
Juu
Continuous (industrial)
Maagizo
1
1
Slit the coil
Slit the coil
The steel coil is slit into strip as wide as the tube's circumference.
Vifaa kwa hatua hii:
Koili ya feleji1000 kg2
2
Roll-form
Roll-form
The strip passes a series of shaped rolls that curl it, step by step, into an open round tube.
Zana zinazohitajika:
Mashine ya kuunda mabomba kwa roli3
3
Weld the seam
Weld the seam
High-frequency current, induced by a coil or fed by contacts, heats the two edges and squeeze rolls press them together into a solid seam.
Zana zinazohitajika:
Mashine ya kulehemu mabomba kwa masafa ya juu4
4
Trim, size and cut
Trim, size and cut
A cutting tool right after the welder planes off the outside bead; the tube cools, sizing rolls set the diameter, and a flying cut-off cuts it to length while it moves.
Zana zinazohitajika:
Mashine ya kuunda mabomba kwa roli5
5
Check
Check
Diameter and wall thickness are measured; the seam is tested.
Zana zinazohitajika:
Kipima-unene cha dijitali cha inchi 6Vifaa
1- 1000 kgKishikilia Nafasi
Zana Zinazohitajika
3- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
Mchoro huu unatengeneza
Blueprint zinazohusiana
Blueprint hizi zinashiriki maarifa — mbinu, vifaa au kanuni
CC0 Umma Wote
Mchoro huu umetolewa chini ya CC0. Uko huru kunakili, kubadilisha, kusambaza, na kutumia kazi hii kwa madhumuni yoyote, bila kuomba ruhusa.
Saidia Mtengenezaji kwa kununua bidhaa kupitia Mchoro wao ambapo wanapata Kamisheni ya Mtengenezaji iliyowekwa na Wachuuzi, au unda marudio mapya ya Mchoro huu na uiunganishe kama kiungo katika Mchoro wako kuchangia mapato.