MENU

/
/
Adjustment of welding squeeze roller for used high frequency welded pipe machine (1)

Adjustment of welding squeeze roller for used high frequency welded pipe machine (1)

  • Sort:Information
  • Auth:
  • Source:
  • Release time:2023-03-09 11:30
  • Pvs:

【概要描述】In the production of used high frequency welded pipe machine, the forming joint state of the tube blank directly affects the quality of the weld, and the parallelism of the butt surface of the welded joint is particularly important. In the process of seam welding of steel pipes, the parallelism of the seam is mainly ensured by adjusting the reduction amount of the upper roller of the squeeze roller and the gap between the two upper rollers.

Adjustment of welding squeeze roller for used high frequency welded pipe machine (1)

【概要描述】In the production of used high frequency welded pipe machine, the forming joint state of the tube blank directly affects the quality of the weld, and the parallelism of the butt surface of the welded joint is particularly important. In the process of seam welding of steel pipes, the parallelism of the seam is mainly ensured by adjusting the reduction amount of the upper roller of the squeeze roller and the gap between the two upper rollers.

  • Sort:Information
  • Auth:
  • Source:
  • Release time:2023-03-09 11:30
  • Pvs:
Detail

In the production of used high frequency welded pipe machine, the forming joint state of the tube blank directly affects the quality of the weld, and the parallelism of the butt surface of the welded joint is particularly important. In the process of seam welding of steel pipes, the parallelism of the seam is mainly ensured by adjusting the reduction amount of the upper roller of the squeeze roller and the gap between the two upper rollers.

 

1. The hole type characteristics of the welding extrusion roller

The hole radius of the upper extrusion roller of the welded extrusion frame is about 10% larger than that of other extrusion rollers. Therefore, a gap is generated between the outer surface of the upper extrusion roller and the ideal circular section of the steel pipe, which is commonly known as "Heel Gap".

 

In actual forming, the section of the steel pipe cannot be an ideal circle. In the general case of used high frequency welded pipe machine, due to insufficient deformation of the edge of the strip, the section is likely to be peach-shaped.

 

If the upper squeezing roll adopts the same hole radius as other squeezing rolls, when the V-shaped seam is eliminated by adjusting the reduction amount of the upper squeezing roll, the outer surface of the upper squeezing roll will be strongly pressed against the surface of the steel pipe It is easy to cause scars on the pipe surface and form a more serious V-shaped seam.

 

Therefore, the setting of "heel gap" is to effectively eliminate the V-shaped seam phenomenon by adjusting the reduction amount of the upper extrusion roller according to the actual characteristics of the tube blank forming. The position and shape of the "heel gap" are shown in Figure 1.

 

Used high frequency welded pipe machine

 

2. Adjustment method of the upper squeeze roller

When the position of the squeeze roller is set according to the standard hole pattern, if it is found that the forming seam is V-shaped, the pressing amount of the upper squeeze roller can be adjusted within the range of "heel gap". The adjustment method is shown in Figure 2. 

 

Used high frequency welded pipe machine

 

The limit of the reduction amount of the upper squeeze roll is that the outer surface of the upper squeeze roll causes a shallow indentation on the surface of the steel pipe. As a rule of thumb, when this reduction limit is reached, a parallel (I-shaped) formed seam is usually formed, even with higher strength tubing.

 

When the used high frequency welded pipe machine applies the above experience, the gap between the two upper squeeze rollers must be set strictly according to the design value. A change in this gap will directly cause a change in the "heel gap". If the gap is not strictly set according to the design value every time the roll is changed, it is difficult to achieve reproducibility in the adjustment of the hole pattern.

 

For the same reason, when performing asymmetric adjustment of the top roll to eliminate misalignment, be sure to adjust only the top roll on the console side, and keep the top roll on the other side fixed as a reference. If the upper rollers on both sides are adjusted arbitrarily, the gap between the upper rollers may be gradually moved away from the set value.

关键词:

More News

Solutions to difficulties in thick-walled pipe forming of directly forming to square pipe mill (2)
Solutions to difficulties in thick-walled pipe forming of directly forming to square pipe mill (2)
Solutions to solve the difficulties in forming thick-walled tubes of directly forming to square pipe mill include special forming unit solutions, rough forming pass solutions, fine forming pass solutions and comprehensive solutions. Let me first introduce the solution (2) of the fine forming hole pattern .
Detail
Solutions to solve the difficulties in forming thick-walled tubes of directly forming to square pipe mill include special forming unit solutions, rough forming pass solutions, fine forming pass solutions and comprehensive solutions. Let me first introduce the solution (2) of the fine forming hole pattern .
Solutions to difficulties in thick-walled pipe forming of directly forming to square pipe mill (1)
Solutions to difficulties in thick-walled pipe forming of directly forming to square pipe mill (1)
Solutions to solve the difficulties in forming thick-walled tubes of directly forming to square pipe mill include special forming unit solutions, rough forming pass solutions, fine forming pass solutions and comprehensive solutions. Let me introduce the solution to the difficult forming of thick-walled tube(1).
Detail
Solutions to solve the difficulties in forming thick-walled tubes of directly forming to square pipe mill include special forming unit solutions, rough forming pass solutions, fine forming pass solutions and comprehensive solutions. Let me introduce the solution to the difficult forming of thick-walled tube(1).
Solution for thick wall tube forming of used round pipe to square pipe machines(2)
Solution for thick wall tube forming of used round pipe to square pipe machines(2)
In the welded pipe industry, people generally regard welded pipes with a wall thickness to outside diameter (thickness-to-diameter ratio) of 12%≤t/D≤18% as thick-walled pipes. Difficulties in used round pipe to square pipe machines, clearly put forward the adjustment methods of thick-walled tube forming.
Detail
In the welded pipe industry, people generally regard welded pipes with a wall thickness to outside diameter (thickness-to-diameter ratio) of 12%≤t/D≤18% as thick-walled pipes. Difficulties in used round pipe to square pipe machines, clearly put forward the adjustment methods of thick-walled tube forming.
Solutions to difficulties in thick-walled pipe forming of directly forming to square pipe mill (1)
Solutions to difficulties in thick-walled pipe forming of directly forming to square pipe mill (1)
Solutions to solve the difficulties in forming thick-walled tubes of directly forming to square pipe mill include special forming unit solutions, rough forming pass solutions, fine forming pass solutions and comprehensive solutions. Let me introduce the solution to the difficult forming of thick-walled tube(1).
Detail
Solutions to solve the difficulties in forming thick-walled tubes of directly forming to square pipe mill include special forming unit solutions, rough forming pass solutions, fine forming pass solutions and comprehensive solutions. Let me introduce the solution to the difficult forming of thick-walled tube(1).
Contact information
Tel: +86-13392281699
Wechat: 13392281699
Email: zty@usedpipemill.com
Company address:No. A99, East Lecong Avenue, Lecong Town, Foshan City, Guangdong Province

Recommendation

Online Inquiry

留言应用名称:
底部留言
描述:

LINK

Contact Us

Tel (wechat): 13336487288
Wechat:+86 13336487288

WhatsApp:+86 13336487288
Email: zty@usedpipemill.com

Address: No. A99, Lecong Avenue East, Lecong Town, Foshan City, Guangdong Province

QRCODE

Copyright 0 2021 jinyujie. 粤ICP备13051810号 Powerby:  300.cn