MENU

/
/
How to adjust the directly forming to square pipe mill when the welded pipe is fully convex on all sides

How to adjust the directly forming to square pipe mill when the welded pipe is fully convex on all sides

  • Sort:Information
  • Auth:
  • Source:
  • Release time:2023-07-09 11:30
  • Pvs:

【概要描述】In view of the reason that the directly forming to square pipe mill is fully convex on all sides, the adjustment methods of four-sided convex, three-sided convex, two-sided convex, and single-sided convex are made respectively.

How to adjust the directly forming to square pipe mill when the welded pipe is fully convex on all sides

【概要描述】In view of the reason that the directly forming to square pipe mill is fully convex on all sides, the adjustment methods of four-sided convex, three-sided convex, two-sided convex, and single-sided convex are made respectively.

  • Sort:Information
  • Auth:
  • Source:
  • Release time:2023-07-09 11:30
  • Pvs:
Detail

In view of the reason that the directly forming to square pipe mill is fully convex on all sides, the adjustment methods of four-sided convex, three-sided convex, two-sided convex, and single-sided convex are made respectively.

 

For rectangular tubes that are convex on all sides, corresponding measures must be taken to eliminate them for specific reasons.

 

(1) Appropriately increase the cutting width. Especially when trial-manufacturing special-shaped pipes of new specifications, the width of the material used must be based on the principle of “narrowing width but not narrowing”.

 

(2) Strictly control the process margin of each section. So that there is sufficient sizing margin when entering the sizing section.

 

(3) Reasonably allocate the sizing allowance in the sizing section. It must be ensured that sufficient materials are available for the last three pass patterns at least.

 

(4) Anti-deformation pass should be used for the final deformation roller. According to the principle of over-correction, for the convex surface caused by hard material, thin material, wide side length, etc., the anti-deformation pass can be used to over-roll the convex pipe to ensure that the pipe surface just returns after leaving the pass. Bounce into a plane.

 

(5) Double plane hole type. That is to say, the final vertical roller and flat roller pass are all designed according to the flat pass. This method is more effective when deforming thick-walled rectangular tubes and is most used.

 

(6) Negative difference method. For the narrow material that has been drawn, the square tube can be adjusted according to the negative tolerance if the standard allows or the customer accepts, which is equivalent to increasing the bandwidth.

 

(7) Hole type repair. It is found that the hole type wears and becomes concave, which can be repaired for individual hole types that are severely worn; relatively speaking, the repair frequency of the last hole type is a little higher, but the repair amount is mostly small.

According to the above 7 methods, the method to adjust the tube of the directly forming to square pipe mill is convex on all sides.

 

Convex on three sides. The reason is similar to the four-sided convex, so I won't repeat it.

 

Convex on both sides. Two-sided convex is divided into two types, namely adjacent convex and opposite convex.

The following table gives some basic reasons and adjustment measures for representative adjacent side convexity and opposite side convexity. (Double click to zoom in to view or save)

 

Directly forming to square pipe mill

 

Single convex.

The one-sided convexity of the rectangular tube is not common in the oblique hole type. In essence, it is a kind of double-sided convexity that is hidden. Single-sided convexity mostly occurs on rectangular pipes produced with box-type pass and four-section arc disjoint pass.

 

The formation mechanism is different from the oblique exit hole. If the left side of the rectangular tube produced with four disjoint arc holes is convex, then one of the possible reasons is that the left side of the first upper and lower rollers has been pressed too much. Too much, resulting in a shorter left side when dividing the material.

 

In terms of adjustment convenience and flexibility, the four-section disjoint arc hole pattern is higher than the oblique hole pattern and the box hole pattern. The premise is to be familiar with the application and find the reason.

 

When adjusting the directly forming to square pipe mill make tube, the method of full convexity on all sides should be distinguished from the reason of single-sided convex, double-sided convex, three-sided convex, and four-sided convex.

关键词:

More News

Factors and various influences to ensure the quality of used high frequency welded pipe machine welded pipe products(1)
Factors and various influences to ensure the quality of used high frequency welded pipe machine welded pipe products(1)
In the process of producing welded pipes with used high frequency welded pipe machine, how to ensure that the product quality meets the requirements of technical standards and the needs of customers, it is necessary to analyze the factors affecting product quality in the production process of steel pipes.
Detail
In the process of producing welded pipes with used high frequency welded pipe machine, how to ensure that the product quality meets the requirements of technical standards and the needs of customers, it is necessary to analyze the factors affecting product quality in the production process of steel pipes.
Improving lubricating effect of flying saw on used welded pipe equipment
Improving lubricating effect of flying saw on used welded pipe equipment
Through the technical improvement of the used welded pipe equipment, the lubrication of the gear and rack of the flying saw has been effectively improved, and the specific performance is as follows:
Detail
Through the technical improvement of the used welded pipe equipment, the lubrication of the gear and rack of the flying saw has been effectively improved, and the specific performance is as follows:
Why does the used roll forming machine flying saw saw lack of lubrication?
Why does the used roll forming machine flying saw saw lack of lubrication?
When the used roll forming machine produces steel pipes, the pipe fittings move at a constant speed according to the set speed, and the saw car is stationary relative to the unit before the sawing process. When the steel pipe reaches the set length, the clamping device of the saw car clamps the steel pipe, and the drive mechanism drives the saw car to move with the steel pipe and perform the sawing process until the sawing operation is completed. When the sawing process of the flying saw is completed, the driving device drives the saw carriage to return to the initial position. The reciprocating motion of the saw car is realized by the relative movement of the rack at the bottom of the saw car and the gear fixedly installed on the machine bed system.
Detail
When the used roll forming machine produces steel pipes, the pipe fittings move at a constant speed according to the set speed, and the saw car is stationary relative to the unit before the sawing process. When the steel pipe reaches the set length, the clamping device of the saw car clamps the steel pipe, and the drive mechanism drives the saw car to move with the steel pipe and perform the sawing process until the sawing operation is completed. When the sawing process of the flying saw is completed, the driving device drives the saw carriage to return to the initial position. The reciprocating motion of the saw car is realized by the relative movement of the rack at the bottom of the saw car and the gear fixedly installed on the machine bed system.
Weld quality failure caused by used welded pipe machines (9)
Weld quality failure caused by used welded pipe machines (9)
When manufacturing welded pipes for used welded pipe machines, judging that the quality of the welded pipes meets the standard depends on the quality of the welds. Therefore, the quality of the weld is very important, so sometimes it is necessary to rule out the quality of the weld. We perform analyses to understand weld quality failures.
Detail
When manufacturing welded pipes for used welded pipe machines, judging that the quality of the welded pipes meets the standard depends on the quality of the welds. Therefore, the quality of the weld is very important, so sometimes it is necessary to rule out the quality of the weld. We perform analyses to understand weld quality failures.
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