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Steel stud and thick aluminum plate frictional stud welding method

A welding method and stud technology, applied in welding equipment, welding/welding/cutting items, non-electric welding equipment, etc., can solve the problem of low pass rate of stud welding, easy to produce defects, and can not solve the problem of large diameter studs and thick studs. Metal substrate welding and other problems, to achieve the effect of avoiding solidification cracks, good welding quality and wide application range

Active Publication Date: 2014-06-11
NANJING UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is a new friction stud welding method, which combines the principle of bolt connection while retaining the advantages of solid phase welding joints, and solves the shortcomings of low stud welding qualification rate and easy to produce defects.
However, this method cannot solve the welding of large-diameter studs and thick metal substrates

Method used

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  • Steel stud and thick aluminum plate frictional stud welding method
  • Steel stud and thick aluminum plate frictional stud welding method
  • Steel stud and thick aluminum plate frictional stud welding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1, Weld a 30CrNi3MoV solid steel stud with a diameter of 8mm and a length of 80mm, and the end of the stud is as figure 2As shown in -a, the diameter of the end gradually becomes smaller, and there is an annular groove in the circumferential direction, the length of the end of the stud is 10mm, and the finished welded joint of 6061 aluminum alloy with a plate thickness of 15mm is an example:

[0035] Step 1: Processing the end of the steel stud 1, the diameter of the end gradually becomes smaller, and the top of the end is a planar structure, and there is an annular groove in the circumferential direction, the surface of the aluminum plate 3 is processed with a preset hole, and the sleeve 2 is respectively clamped at the predetermined position ; Step 2, start the power supply, the stud rotates, the rotating speed is 1200r / min, and work downwards. After the steel stud contacts the aluminum plate, stop the work, and the steel stud rubs against the aluminum plate...

Embodiment 2

[0036] Example 2, To weld a 30CrNi3MoV solid stud with a diameter of 12mm and a length of 80mm, the end of the stud is as figure 2 As shown in -b, the diameter of the end gradually decreases, and the top of the end is a conical structure, with two annular grooves in the circumferential direction, the length of the end of the stud is 12mm, and the finished welded joint of 6061 aluminum alloy with a plate thickness of 20mm For example:

[0037] Step 1, processing the end of the steel stud 1, the diameter of the end gradually becomes smaller, and there are two annular grooves in the circumferential direction, the surface of the aluminum plate 3 is processed with preset holes, and the sleeves 2 are respectively clamped at predetermined positions; Step 2, start the power supply, The stud rotates at a speed of 900r / min, and works downward. The steel stud and the aluminum plate contact and stop working. The steel stud and the aluminum plate rub for 4 to 8 seconds, so that the stee...

Embodiment 3

[0038] Example 3, To weld a 30CrNi3MoV solid stud with a diameter of 16mm and a length of 80mm, the end of the stud is as figure 2 As shown in -c, the diameter of the end gradually becomes smaller, and the top of the end is a conical structure, with an annular groove in the circumferential direction, the length of the end of the stud is 14mm, and the finished welded joint of 6061 aluminum alloy with a plate thickness of 25mm is example:

[0039] Step 1, processing the end of the steel stud 1, the diameter of the end gradually becomes smaller, and there is an annular groove in the circumferential direction, the surface of the aluminum plate 3 is processed with a preset hole, and the sleeve 2 is respectively clamped at the predetermined position; Step 2, the power is turned on, The stud rotates at a speed of 600r / min, and works downward. After the steel stud contacts the aluminum plate, the work stops. The steel stud rubs against the aluminum plate for 8 seconds, so that the...

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Abstract

The invention discloses a steel stud and thick aluminum plate frictional stud welding method, which is characterized in that the welding end part of a steel stud is subjected to certain structural design, the steel stud is rotated, is applied with frictional acting force, and is contacted and rubbed with an aluminum plate, and the steel stud is slowly embedded into the thick aluminum plate. Double characteristics of frictional stud welding and threaded connection are realized, so that a welded joint with good performance is manufactured. By the method, steel studs with middle and small diameters are welded with thick aluminum plates. According to the method, the welding strength of the stud welding can be obviously improved, the influence of defects in common welding on the joint quality is reduced, and the service life is greatly prolonged.

Description

technical field [0001] The invention relates to a stud welding method, in particular to a friction stud welding method between a steel stud and a thick aluminum plate, which is suitable for welding between a steel stud and an aluminum plate, especially for welding between a medium and small diameter stud and a thick aluminum plate welding. Background technique [0002] Stud welding refers to a method of welding studs or similar metal posts and other fasteners to metal substrates. As a simple, high-speed, low-consumption, and low-pollution advanced welding technology, stud welding is widely used in the fields of vehicles, shipbuilding, boilers, steel structures, construction, electronics, instruments, and medical equipment. According to the heat source classification of stud welding, stud welding can be divided into welding methods such as resistance welding, friction welding, explosive welding and arc welding. According to the classification of stud welding power source,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K20/12
CPCB23K20/122B23K20/129B23K2103/20
Inventor 周琦赵江涛王克鸿杨立张惠芸朱军彭勇刘玲丹蔡雅君
Owner NANJING UNIV OF SCI & TECH
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