MENU

/
/
/
Affect the matching of the welding process of the second-hand high frequency pipe welding machine

Affect the matching of the welding process of the second-hand high frequency pipe welding machine

  • Sort:Information
  • Auth:
  • Source:
  • Release time:2021-04-09 16:30
  • Pvs:

【概要描述】The second-hand high-frequency pipe welding machine often has problems during the welding process, and no serious welded pipe quality is found. Below we will analyze the matching that affects the welding process of the second-hand high-frequency pipe welding machine. Mainly affecting the welding process of the second-hand high frequency welded pipe machine can be divided into 4 types.

Affect the matching of the welding process of the second-hand high frequency pipe welding machine

【概要描述】The second-hand high-frequency pipe welding machine often has problems during the welding process, and no serious welded pipe quality is found. Below we will analyze the matching that affects the welding process of the second-hand high-frequency pipe welding machine. Mainly affecting the welding process of the second-hand high frequency welded pipe machine can be divided into 4 types.

  • Sort:Information
  • Auth:
  • Source:
  • Release time:2021-04-09 16:30
  • Pvs:
Detail
The second-hand high-frequency pipe welding machine often has problems during the welding process, and no serious welded pipe quality is found. Below we will analyze the matching that affects the welding process of the second-hand high-frequency pipe welding machine. Mainly affecting the welding process of the second-hand high frequency welded pipe machine can be divided into 4 types.

1. Matching at all power levels

In the actual production process, welding speed (vehicle speed), welding frequency, welding power, opening angle size, resistor position, resistor working condition, magnetic flux size, steel strip thickness, welded pipe diameter, cooling water temperature, and even Deburring and the habits of operators in different teams all affect load matching. Therefore, continuous maintenance of the best matching is a prerequisite to ensure the consistent welding quality of the welded pipe.


Affect the matching of the welding process of the second-hand high frequency pipe welding machine

 

2. Can the voltage inverter welding machine perform load matching accurately?

Most voltage inverter welding machines perform load matching by changing the contact points on the RF transformer. If you want to perform load matching, you need to continuously change the contacts of the transformer, which is basically impossible to adjust when the welding machine is working continuously.

The current inverter welding machine, through the automatic matching system, the load matching is automatically maintained, without the participation of the operator, the welding machine can always work in the best load matching state, ensuring stable welded pipe weld quality.


3. Parameter matching of welding frequency

From the perspective of the development of second-hand high-frequency pipe welding machines, the frequency around 400KHz has been proven to be the best frequency for the induction welding process. The welding frequency determines the width of the steel strip and the amount of extrusion. These parameters are all necessary conditions for achieving good welding quality. High frequency can reduce the depth of current penetration. This phenomenon is called "Skin Effect". The skin effect concentrates the heat on the edge of the weld near the surface, achieving high-quality forging welding with the least amount of extrusion. On the contrary, the low frequency causes more areas of the weld edge to be heated, and in severe cases, it will cause embrittlement of the cast weld. The welding frequency and the set parameters of the unit also affect each other, such as forming, opening angle and other roll geometric parameters. In addition, the high-frequency welding process will be more sensitive to the setting of the above parameters in the low-frequency state. If the cooperation is not good, it can cause more unqualified products and unstable welding quality.

 

Affect the matching of the welding process of the second-hand high frequency pipe welding machine

 

4. The mechanical parameters of other units are related to frequency matching

The performance of the impedance device also depends on the frequency. All resistors are limited to the saturation magnetic flux density, which is the so-called magnetic flux conductivity. If this limit is exceeded, the resistor will stop working. The magnetic flux in the impedance device changes with the frequency conversion. For example, a normally working impedance device will withstand twice the magnetic flux at 200KHz than at 400KHz. Reducing the welding frequency may require additional impedance materials (magnetic rods). When welding small-diameter thick-walled tubes, the quality and magnetic flux of the impedance (magnetic rods) are particularly important due to the limitations of actual space conditions.

The above is the matching that affects the welding process of the second-hand high frequency pipe welding machine, and I look forward to your assistance. Our company focuses on second-hand welded pipe equipment suppliers. If you need to buy second-hand welded pipe equipment, welcome new and old customers to consult and purchase.

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