US 12,115,576 B2
Process of producing a non-ferrous metallic tube
Juho Kalliokoski, Ulvila (FI); Hanna-Leena Suviniemi-Mäkitalo, Säkylä (FI); and Jukka Lähteenmäki, Pori (FI)
Assigned to Upcast Oy, Pori (FI)
Appl. No. 17/906,666
Filed by Upcast Oy, Pori (FI)
PCT Filed Mar. 12, 2021, PCT No. PCT/FI2021/050181
§ 371(c)(1), (2) Date Sep. 19, 2022,
PCT Pub. No. WO2021/186105, PCT Pub. Date Sep. 23, 2021.
Claims priority of application No. 20205279 (FI), filed on Mar. 19, 2020.
Prior Publication US 2023/0356291 A1, Nov. 9, 2023
Int. Cl. B22D 11/14 (2006.01); B22D 11/00 (2006.01); B22D 21/02 (2006.01)
CPC B22D 11/145 (2013.01) [B22D 11/004 (2013.01); B22D 11/006 (2013.01); B22D 21/025 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A process of producing a non-ferrous metallic tube, the process comprising:
a casting stage, in which a cast tube having an outer diameter of 20-70 mm, is cast from melt by continuous upward vertical casting process; at least two drawing stages following the casting stage, wherein the cast tube cast from melt by the continuous upward vertical casting process has a wall thickness of 1.0-4.0 mm, and wherein drawing direction of the cast tube in the at least two drawing stages following each other is opposite to each other.