Unlock instant, AI-driven research and patent intelligence for your innovation.

Plasma small hole welding system and plasma small hole welding method

A small hole welding and plasma technology, which is applied in plasma welding equipment, welding equipment, metal processing equipment, etc., can solve the problems of no weld bead formed and uneven width of the weld bead.

Active Publication Date: 2016-03-16
DAIHEN CORP
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the size of the small hole changes, there may be problems such as uneven width of the bead formed on the base metal or no bead formed on the back of the base metal.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Plasma small hole welding system and plasma small hole welding method
  • Plasma small hole welding system and plasma small hole welding method
  • Plasma small hole welding system and plasma small hole welding method

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0121] figure 1 It is a figure which shows the structure of the plasma keyhole welding system concerning 1st Embodiment of this invention.

[0122] figure 1 The shown plasma keyhole welding system A1 includes a welding robot 1 , a robot control device 2 , a welding power supply device 3 , and a gas supply device 4 .

[0123] The welding robot 1 includes a welding torch 11 and a manipulator 12 .

[0124] like figure 2 As shown, the welding torch 11 has a nozzle 111 and a plasma electrode 112 . The nozzle 111 is a cylindrical member made of metal such as copper. The nozzle 111 suitably has a water cooling structure. The plasma electrode 112 is a non-consumable electrode. The plasma electrode 112 is a metal rod made of, for example, tungsten. The plasma electrode 112 is an electrode for applying a welding voltage Vw to the base material W. Plasma gas PG is ejected from nozzle 111 so as to surround plasma electrode 112 . The plasma gas PG is, for example, Ar. By applyin...

no. 2 Embodiment approach

[0188] Figure 10 It is a figure which shows the structure of the plasma keyhole welding system concerning 2nd Embodiment of this invention.

[0189] Figure 10 The shown plasma keyhole welding system A2 includes a welding robot 1 , a robot control device 2 , a welding power supply device 3 , and a gas supply device 4 .

[0190]Since the welding robot 1 and the gas supply device 4 in the plasma keyhole welding system A2 have the same configuration as that in the plasma keyhole welding system A1, description thereof will be omitted.

[0191] The welding power source device 3 is the same as that of the first embodiment except that it further includes a comparison circuit 361 , a threshold storage unit 362 , and a notification unit 364 .

[0192] In the present embodiment, the comparison circuit 361 and the notification unit 364 constitute the confirmation support unit of the present invention. The confirmation assisting unit obtains the auxiliary information Inf1 based on the...

no. 3 Embodiment approach

[0204] Figure 12 It is a figure which shows the structure of the plasma keyhole welding system concerning 3rd Embodiment of this invention.

[0205] Figure 12 The shown plasma keyhole welding system A3 includes a welding robot 1 , a robot control device 2 , a welding power supply device 3 , and a gas supply device 4 .

[0206] Since the welding robot 1 and the gas supply device 4 in the plasma keyhole welding system A3 have the same configuration as those in the plasma keyhole welding systems A1 and A2, description thereof will be omitted.

[0207] The welding power source device 3 is the same as that of the second embodiment except that it does not include the reporting unit 364 . In addition, in the present embodiment, the comparator circuit 361 sends the generated small hole size variation detection signal Sc to the operation control circuit 21 . Additionally, with Figure 12 As shown, the welding power source device 3 may have the notification unit 364 described in t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a plasma small-hole welding method capable of forming more attractive welding passes and a plasma small-hole welding system. The welding system comprises an output circuit (31) making a pulse current with a set frequency (Ffr) flow between a plasma electrode (112) and a base metal (W); a small hole size detection part detecting the size of a small hole formed on the base metal (W); and a frequency calculation circuit (38) calculating the set frequency (Ffr) according to the size of the small hole detected by the small hole size detection part. By means of the above-mentioned technical scheme, the size of the small hole can be adjusted by adjusting the frequency of the pulse current. Therefore, more attractive welding passes can be formed.

Description

technical field [0001] The invention relates to a plasma hole welding (Plasmakey hole welding) system and a plasma hole welding method. Background technique [0002] In the plasma hole welding method, when welding the butt joint of the base metal such as I-shaped groove, the arc is generally restrained by the water-cooled nozzle and the plasma gas flow when the tungsten electrode is used as the cathode for discharge. In addition, the plasma keyhole welding method is welding in which a well-concentrated high-temperature plasma flow is generated, and the high-temperature plasma flow moves on the welding line while forming a small hole penetrating the base material at the tip of the molten pool. In this welding, the arc heat is directly supplied until it reaches the back surface, and the welding of the back surface can also be properly performed. For example, Patent Document 1 describes a plasma keyhole welding method. [0003] In stable welding in which welding is performed ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B23K10/02
Inventor 刘忠杰
Owner DAIHEN CORP
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com