MENU

/
/
Used steel pipe rolling mills, the solution to the difficult forming of thick-walled tube(2)

Used steel pipe rolling mills, the solution to the difficult forming of thick-walled tube(2)

  • Sort:Information
  • Auth:
  • Source:
  • Release time:2021-10-25 11:30
  • Pvs:

【概要描述】Solutions to solve the difficulties in forming thick-walled tubes of used steel pipe rolling mills include special forming unit solutions, rough forming pass solutions, fine forming pass solutions and comprehensive solutions. Let me first introduce the precision forming pass solution (1) .

Used steel pipe rolling mills, the solution to the difficult forming of thick-walled tube(2)

【概要描述】Solutions to solve the difficulties in forming thick-walled tubes of used steel pipe rolling mills include special forming unit solutions, rough forming pass solutions, fine forming pass solutions and comprehensive solutions. Let me first introduce the precision forming pass solution (1) .

  • Sort:Information
  • Auth:
  • Source:
  • Release time:2021-10-25 11:30
  • Pvs:
Detail

Solutions to solve the difficulties in forming thick-walled tubes of used steel pipe rolling mills include special forming unit solutions, rough forming pass solutions, fine forming pass solutions and comprehensive solutions. Let me first introduce the precision forming pass solution (1) .

 

Precision forming pass solution (1)

The used steel pipe rolling mills is required to increase the deformation of the edge of the tube blank under the condition of making a round, precision-formed closed pass, and it is also difficult to reduce the diameter without excessive reduction. However, this process goal can be achieved by adopting a flat oval precision forming closed hole type. The forming idea of the flat ellipse closed pass is: "flat ellipse + springback = circle", so that the thick-walled tube can be fully deformed in the flat ellipse closed pass. At the same time, it is beneficial for the tube blank to smoothly enter the hole pattern and reduce the difficulty of operation.

 

Used steel pipe rolling mills

 

If you want to solve the used steel tube rolling mills precision forming pass, you must know the following information:

  1. The connotation of the flat oval closed pass.

  2. The function of the flat ellipse closed hole type.

  3. The design principle of flat ellipse closed hole type.

The following first introduces the connotation of the flat ellipse closed hole type.

 

(1) The connotation of the flat ellipse closed hole type. The flat ellipse closed hole type means that the hole type curve of the closed hole roller is an ellipse with the major axis in the horizontal direction, the minor axis in the vertical direction and the difference between the major and minor axes is not too large. Its connotation has two points:

 

A: Micro-ellipse and macro-circle. Since the ellipse of the ellipse is not large, the ellipse can be roughly regarded as a circle with a diameter of φ, as shown by the red line in the figure, and this red line is the hole profile of the circular closed-hole roller. Unified in the following formula.

 

Used steel pipe rolling mills

 

In the formula, △ is the difference between the long and short semi-axes of the elliptical hole, △=2~4mm, the larger the wall-to-diameter ratio, the larger the value; bf is the correction value of the guide ring wall thickness and arc length; B is the width of the tube blank. The formula not only shows the internal connection between the flat ellipse hole type and the round closed hole pattern, but also stipulates the key dimensions of the flat ellipse closed hole pattern, which is an important basis for the design of the flat ellipse closed hole pattern.

 

B: The arc lengths of the holes are equal. Starting from the actual production of welded pipes, the arc length of the pass of the flat oval closed pass roll must be equal to the arc length of the round closed pass, which is also a basic principle that should be followed in the design of the flat oval closed pass roll.

 

For the used steel pipe rolling mills, four solutions are proposed for the forming difficulties of thick-walled pipes. According to the actual situation, the corresponding solutions are used to solve them. I hope to provide you with effective help.

 

Part of the content of this site comes from the Internet. This site only provides information storage. The copyright belongs to the original author. It does not bear the relevant legal responsibility and does not represent the views and positions of this site. Please contact and delete it if there is any infringement.

关键词:

More News

On-line heat treatment method for high frequency welded pipe machine made pipe welds
On-line heat treatment method for high frequency welded pipe machine made pipe welds
The high frequency welded pipe machine HFW welded steel pipe has been continuously developed with the competition with seamless steel pipe. For welded steel pipes to gradually replace seamless steel pipes, the key is to have high product quality and low production costs. Nowadays, with the advancement of steel smelting technology, hot-rolled steel strip technology and pipe-making technology, as well as the extension of process technology to specialization, differentiation and conservation, all these have created the improvement of the quality of HFW welded pipes and the reduction of costs. condition.
Detail
The high frequency welded pipe machine HFW welded steel pipe has been continuously developed with the competition with seamless steel pipe. For welded steel pipes to gradually replace seamless steel pipes, the key is to have high product quality and low production costs. Nowadays, with the advancement of steel smelting technology, hot-rolled steel strip technology and pipe-making technology, as well as the extension of process technology to specialization, differentiation and conservation, all these have created the improvement of the quality of HFW welded pipes and the reduction of costs. condition.
High frequency welded pipe equipment to achieve seamless welded pipe
High frequency welded pipe equipment to achieve seamless welded pipe
The high frequency welded pipe equipment HFW welded steel pipe has been continuously developed with the competition with seamless steel pipe. For welded steel pipes to gradually replace seamless steel pipes, the key is to have high product quality and low production costs. Nowadays, with the advancement of steel smelting technology, hot-rolled steel strip technology and pipe-making technology, as well as the extension of process technology to specialization, differentiation and conservation, all these have created the improvement of the quality of HFW welded pipes and the reduction of costs. condition.
Detail
The high frequency welded pipe equipment HFW welded steel pipe has been continuously developed with the competition with seamless steel pipe. For welded steel pipes to gradually replace seamless steel pipes, the key is to have high product quality and low production costs. Nowadays, with the advancement of steel smelting technology, hot-rolled steel strip technology and pipe-making technology, as well as the extension of process technology to specialization, differentiation and conservation, all these have created the improvement of the quality of HFW welded pipes and the reduction of costs. condition.
Correct selection of induction coils for high frequency welded pipe equipment
Correct selection of induction coils for high frequency welded pipe equipment
For high frequency welded pipe equipment in order to obtain the maximum welding efficiency, the correct selection of the induction coil is very important.
Detail
For high frequency welded pipe equipment in order to obtain the maximum welding efficiency, the correct selection of the induction coil is very important.
Used square pipe mill to adjust the diagonal of square and rectangular tube
Used square pipe mill to adjust the diagonal of square and rectangular tube
The essence of adjusting the diagonals of the used square pipe mill is to adjust the square of the square tube. In theory, if the two diagonals of the square tube are equal, the square tube is square. But not necessarily for the rectangular tube in physical form.
Detail
The essence of adjusting the diagonals of the used square pipe mill is to adjust the square of the square tube. In theory, if the two diagonals of the square tube are equal, the square tube is square. But not necessarily for the rectangular tube in physical form.
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