MENU

/
/
Used round tube forming machines, the cause of the scratches on the welded tube

Used round tube forming machines, the cause of the scratches on the welded tube

  • Sort:Information
  • Auth:
  • Source:
  • Release time:2021-12-19 11:30
  • Pvs:

【概要描述】The tube blank scratches that appear in the welding of the used round tube forming machines are mainly caused by two parts, one is the guiding mechanism, and the other is the extrusion welding mechanism.

Used round tube forming machines, the cause of the scratches on the welded tube

【概要描述】The tube blank scratches that appear in the welding of the used round tube forming machines are mainly caused by two parts, one is the guiding mechanism, and the other is the extrusion welding mechanism.

  • Sort:Information
  • Auth:
  • Source:
  • Release time:2021-12-19 11:30
  • Pvs:
Detail

The tube blank scratches that appear in the welding of the used round tube forming machines are mainly caused by two parts, one is the guiding mechanism, and the other is the extrusion welding mechanism.

 

Used round forming machines

 

1. Scratch of the guide mechanism

The scratches of the guiding parts of the used round tube forming machines generally occur on both sides of the tube blank. If the guiding structure equipped with the guide sleeve is adjusted unreasonably, the upper and lower surfaces of the tube blank will also have frictional scratches. The characteristics of injuries are relatively large wounds and strong continuity. The main reason is that the height position of the guide sleeve is incorrect, or after the upper and lower guide roller bearings are damaged and replaced, the tube blank cannot be well controlled to cause friction with the guide sleeve to form. In addition, when the guide roll deviates too much from the rolling centerline, and the relative difference between the axis of the guide sleeve and the guide roll is too large, it will also cause scratches on both sides of the tube blank.

 

Used round tube forming machines

 

2. Scratch on the extrusion welding mechanism

The scratches caused by the squeeze roller of the used round tube forming machines mainly occur at the bottom of the tube blank. The reasons are roughly as follows:

 

(1) The hole pattern does not match. There are two-roller, three-roller and four-roller welding seam extrusion structures. As long as the combined hole patterns do not match, it is easy to cause scratches on the surface of the tube blank. The two-roller structure is particularly prominent. There are many factors that cause the mismatch of the hole patterns. Take the two-roller structure as an example, such as damage to the bearing; axial movement of the roller; different hole patterns; different height positions of the two rollers; shaft bending and unstable assembly.

 

(2) Highly matching. The lower edge of the squeeze roll pass should be consistent with the height of the rolling line, and the height of the guide roll is determined by the wall thickness of the tube. If the height of the guide roller is reduced to a certain limit, the edge rounded corners of the squeeze roller pass will cause scratches on the bottom of the tube blank, especially after the R rounded corners of the squeeze roller pass are sharpened, the scratches will be It's more likely to happen.

 

The squeeze force on the squeeze roller is insufficient. Especially for the squeeze roller device with two-roller structure, when the upper squeezing force is insufficient, under the tension of the tube blank, the roller shaft will have an upward elevation angle, so that the rounded corners of the hole edge R will protrude, resulting in the lower part of the tube blank. Scratched. When the rounded corners of the squeeze roll hole type R are sharpened, the occurrence of scratches will be aggravated.

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