Fusion welding process high-dynamic wire feeding control method based on piezoelectric actuator

A piezoelectric actuator and control method technology, applied in arc welding equipment, process efficiency improvement, manufacturing tools, etc., to achieve the effects of easy implementation, control, and simple design

Pending Publication Date: 2022-05-27
BEIJING UNIV OF TECH
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the traditional melting electrode arc cannot obtain stable and controllable droplet transfer under low current, and the processes such as precisi

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
  • Fusion welding process high-dynamic wire feeding control method based on piezoelectric actuator
  • Fusion welding process high-dynamic wire feeding control method based on piezoelectric actuator
  • Fusion welding process high-dynamic wire feeding control method based on piezoelectric actuator

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0024] The apparatus employed in the present embodiment includes: welding workpiece 1, arc welding torch 2, piezoelectric actuator controller 3, bottom radial actuator 4-1&4-4, top radial actuator 4-2&4-3, axial actuator 5, welding wire 6, welding power supply 7. The 4-2&4-3 piezo actuator combination completes the butt welding wire locking, and the 4-1&4-4 and 5 axial actuators complete the retraction of the welding wire; and the stirring action process is the top radial actuator 4-2&4-3 locking welding wire, and the 4-1 and 4-4 actions achieve the effect of stirring / excitation molten pool.

[0025] Welding wire 6 is an ER50-6 carbon steel argon arc welding wire with a diameter of 0.8mm. as Figure 4 as shown, t 0 -Δt 1 When the piezoelectric actuator acts on the pre-weld wire is fed normally and the wire feed speed is equal to the instantaneous speed at the end of the weld wire; the periodicity is t 0 At the moment, the top radial piezo actuator P1 can realize the transient lockin...

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 discloses a high-dynamic wire feeding control method in a fusion welding process based on a piezoelectric actuator, which is characterized in that a'emergency brake 'principle is used for reference, molten drops are assisted to be separated from welding wires in a manner of applying external force to the molten drops, and novel equipment different from'feeding-withdrawing' reciprocating wire feeding control is provided to promote molten drop transition; meanwhile, the welding wire excites the molten pool, and the effect of stirring the molten pool is achieved. The device comprises a welding workpiece, an electric arc welding gun, a piezoelectric actuator controller, a bottom radial actuator, a top radial actuator, an axial piezoelectric actuator, a welding wire and a welding power source. According to the device, through independent programming of the piezoelectric actuator, one-pulse-one-drop shot drop transition and smooth and non-splashing short-circuit transition are achieved, molten drop transition, base metal melting, welding current decoupling and molten pool stirring in the welding process are achieved, and the effects of refining crystal grains and improving the welding strength are achieved. The method is applied to high-efficiency welding of gas metal arc welding, precise welding of thin plates and rapid forming and manufacturing processes.

Description

Technical field [0001] The present invention relates to a high dynamic wire feed state control method and mechanism based on a combined piezo actuator, is a melt welding or cladding application field. Background [0002] Melt welding is the main welding technology of all kinds of metal welding, and the specific common methods include melting pole gas shielded welding (GMAW), non-melting pole gas shielded welding (GTAW), laser welding, electron beam welding and other methods. In addition to the GMAW welding process that necessarily involves wire feeding and melting behavior, other methods also use a large number of wire filling welding, involving the control of wire feeding and melting behavior. In particular, for GMAW processes, such as attached Figure 1 As shown, during the welding process, a high-temperature arc is established between the welding wire and the workpiece, and the arc melts the welding wire and the base material at the same time, and the arc length can be maintain...

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
IPC IPC(8): B23K9/12
CPCB23K9/124Y02P10/25
Inventor 肖珺王志浩陈树君程博
Owner BEIJING UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products