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The date of payment from buyers deliver within days
Beijing
Long-term effective
2021-04-27 00:25
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Company Profile
Zaozhuang Goldshell Import & Export Co., LtdBy certification [File Integrity]
Contact:goldshell(Mr.)
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Area:Beijing
Address:Beijing
Website:http://www.metalgoldshell.com/ http://goldshell.shenzimc.com/
Piercing plug for seamless steel pipes production
Brief instruction
Pipes are developped from solid round steel billets. The billet is charged into a rotary hearth furnace. After
the billet is discharged from the rotary hearth furnace, a small hole is punched into its end. This indentation acts as a starting point to aid in rotary piercing.Piercing plug is used in the piercing process. The quality
of piercing plug will decide the pipes inner wall quality.
Rotary piercing is a very fast and dynamic rolling process that cross rolls the preheated billet between two barrel-shaped
rolls at a high speed. The cross rolling causes high tensile stresses at the center of the billet. The design of the piercer rolls causes the metal to flow along the roll and over a piercer point as it exits the process.
The piercer point is a high-temperature, water-cooled alloy tool designed to allow the metal to flow over it as a pipe shell forms from the rotary process. Once the pierced pipe shell is produced, it is immediately transferred
to the floating mandrel mill.
Product specification
Materials |
34CrMo4(1.7220,GB 35CrMo), AISI H13(JIS SKD61, GB 4Cr5MoSiV1 and DIN 1.2344 Tool Steel), 20CrNi4, Moly plug . |
Dimension |
Φ30mm-Φ500mm with different length. |
Hardness |
H13: 38-42HRC, 20CrNi4: 260-320HB |
Surface Processing |
Fine machining, Nitriding oxidization with required thickness |
Application |
Cross type pierce mill and barrel type pierce mill |
Threading |
Available |
Design |
Water jet/moly tips available for 34CrMo4 and H13 hot tool steel, |
Products propertites:
Physical property |
Good design and hardness , meet the production request, high-performance resistance. |
Surface |
Smooth and fine |
Service life |
Longer than normal plugs. |
http://www.metalgoldshell.com/