Weld Bead and Heat Distortion After Welding
The outside weld bead and residual heat are the two biggest threats to tube quality right after welding. A rough bead marks downstream rolls and ruins surface finish, while heat that is not removed fast enough warps the body and spoils roundness.
Why Bead and Heat Damage the Tube
Without deburring, the raised outside bead scores the sizing rolls and transfers marks to every tube. Slow or uneven cooling lets residual heat distort the thin wall, so the body arrives at sizing already out-of-round and hard to correct.
The ZY20 Burr Removal Tube Mill Solution
An automatic outside-burr removal unit with pneumatic rapid in/out feed clears the weld bead, protecting rolls and delivering a clean surface.
Spray plus overflow-pool cooling with adjustable metal nozzles delivers ≥10 t/h coolant flow, removing weld heat fast for stable roundness.
The cooled, deburred tube then enters 6+6 sizing and Turk head straightening with a smooth, round body ready for finishing.
Technical Specifications of the ZY20 Tube Mill
| Parameter | Specification |
|---|
| Tube outside diameter | φ10–26 mm |
| Wall thickness | 0.4–1.5 mm |
| Rated production speed | up to 90 m/min |
| Raw material | HR / CR low-carbon steel, galvanized steel |
| HF welder power | 100 kW solid-state |
| Forming stands | 5 rough + 3 finish |
| Sizing stands | 6 horizontal + 6 vertical |
| Leveling rolls | 7-roll precision leveler |
| Cut length / precision | 4–8 m, ±3 mm |
| Coolant flow | ≥10 t/h spray + overflow pool |
| Roll shaft material | 42CrMo quenched & tempered + HF hardened |
Complete Continuous Production Process
Every ZY20 runs one continuous flow from coil to finished cut tube. An uncoiler feeds strip through a 7-roll precision leveler that removes coil-set, then double-radius forming shapes it in 5 rough and 3 finish stands without edge wave. A 100 kW solid-state HF welder fuses the seam under squeeze pressure with a dedicated seam guide, and an automatic outside-burr unit clears the bead immediately. ≥10 t/h spray plus overflow-pool cooling locks the shape, the 6-horizontal + 6-vertical sizing train sets the diameter, and a 4-roll Turk head straightens the tube before the microcomputer flying saw cuts 4–8m lengths to ±3mm. Overload-protected stands and 42CrMo hardened shafts keep the whole line stable over long runs.
Where the ZY20 Burr Removal Tube Mill Is Applied
Any φ10-26mm tube line where a clean weld bead and controlled cooling are required for plated, coated or precision tube.
How to Select a Burr Removal and Cooling Mill
Confirm deburring is automatic with rapid in/out feed, and check cooling capacity — the ZY20 delivers ≥10 t/h through spray plus overflow pool with adjustable nozzles.
Installation, Support and After-Sales
The ZY20 ships as a turnkey package with layout and foundation drawings so you can prepare the site before delivery. Engineer-led on-site installation and commissioning bring the line to rated output, with operator training to hand over a running mill. A one-year warranty with spare-parts support protects the investment, and because the line accepts HR, CR and galvanized coil, you can adapt to changing material costs and market demand without re-tooling.
Frequently Asked Questions About the ZY20 Burr Removal Tube Mill
How is the outside bead removed?
An automatic burr removal unit with pneumatic rapid in/out feed.
What is the cooling capacity?
≥10 t/h through spray plus overflow-pool cooling with adjustable metal nozzles.
Why does cooling matter?
Fast, even cooling locks roundness before sizing and prevents heat distortion.
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