KR20110088266A - Probe for friction stir welding - Google Patents

Probe for friction stir welding Download PDF

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Publication number
KR20110088266A
KR20110088266A KR1020100008097A KR20100008097A KR20110088266A KR 20110088266 A KR20110088266 A KR 20110088266A KR 1020100008097 A KR1020100008097 A KR 1020100008097A KR 20100008097 A KR20100008097 A KR 20100008097A KR 20110088266 A KR20110088266 A KR 20110088266A
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KR
South Korea
Prior art keywords
probe
friction
welding
shoulder portion
friction pin
Prior art date
Application number
KR1020100008097A
Other languages
Korean (ko)
Inventor
김상혁
조현진
Original Assignee
주식회사 에이치엠
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 에이치엠 filed Critical 주식회사 에이치엠
Priority to KR1020100008097A priority Critical patent/KR20110088266A/en
Publication of KR20110088266A publication Critical patent/KR20110088266A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
    • B23K20/1205—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using translation movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
    • B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
    • B23K20/1245—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding characterised by the apparatus
    • B23K20/1255—Tools therefor, e.g. characterised by the shape of the probe
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
    • B23K20/129—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding specially adapted for particular articles or workpieces

Abstract

The present invention is integrally formed with the inverted conical shoulder portion connected to the friction pin on the bottom surface of the body of the probe rotating body having a friction pin at the tip, the inverted shoulder portion has a slope of a gentle slope than the slope of the friction pin and the inclined surface By forming the spiral grooves, it is possible to obtain a homogeneous welding effect without tilting the probe at an angle, thereby reducing the cost of the equipment, and providing a stable welding effect even at a narrow turning radius, and applying to a member having an uneven surface. Even if it shows a homogeneous welding characteristics without burrs or welding defects.

Description

PROBE FOR FRICTION STIR WELDING}

The present invention relates to a probe for friction movement welding, and more particularly, to a probe for friction movement welding in which the structure of the bottom surface of the cylindrical rotating body is improved to maximize the flow of the member surface portion.

In general, friction stir welding (FSW) is fixed by attaching two metal members tightly, and then inserting and rotating a portion of a non-consumable probe made of a material that is harder than the metal member at the junction of the two metal members and rotating the same. The relative motion of the metal member causes the frictional heat to be generated to heat the junction of adjacent metal members to a temperature sufficient to soften.

This creates a so-called “third-body” area that softens around the area where the probe is inserted, and applies a mechanical force to the third body to move the probe along the seam so that the heated portion is in front of the probe. It is extruded from the advancing side to the retreating side, and the solid state junction is formed by the combination of frictional heat and mechanical processing as described above.

Probe for the bonding process as described above is composed of a friction pin is coupled to the bottom surface of the body of the rotating body. The rotor is rotated perpendicularly to the joint surface of the metal member, whereby the friction pin rotates and is inserted into the joint of the metal member to heat the metal member, and the bottom surface of the body of the rotor is formed flat so that the friction pin The portion of the heated metal member is expanded while pressing the softened portion of the metal member to form a smooth weld surface.

However, the probe as described above generates a force that pulls the metal flow generated by the spiral shape from the friction pin in coordination with the centrifugal force generated in the rotational direction to bounce the metal flow out. As a result, the metal fluidity of the metal member surface portion is reduced, causing burrs and welding defects in the metal member surface portion, and there is a problem of lowering the welding speed.

Therefore, in order to improve the above problems, the probe disclosed in Korean Patent No. 219003 is formed so that the bottom portion 23 of the rotating cylindrical body 2 has a concave surface, and the rotating cylindrical body 2 is welded. It was constructed by rotating slightly inclined with respect to the normal of the surface. Probe of the configuration as described above, the concave shape of the bottom portion 23 of the rotating cylindrical body (2) serves as a kind of vessel to suppress the force to be bounced out of the plasticized material of the member indirectly pulled out, proceeding The raised surface of the bottom portion 23 in the direction gathered the material in the forward direction to increase metal fluidity near the surface, thereby reducing burrs and welding defects on the surface of the metal member, and increasing the welding speed.

However, the probe having the above-described configuration should cause the rotating cylindrical body 2 to be inclined at a predetermined angle with respect to the normal of the welding surface, causing a rise in the price of the equipment. When the welding line passes a narrow radius of rotation, the weld defect occurrence rate increases. When the surface of the metal member to be welded is unevenly formed, the bottom portion 23 cannot make intimate contact with the upper surface of the metal member, and thus welding defects such as burrs, root defects, and internal defects are generated.

Accordingly, an object of the present invention is to obtain a homogeneous welding effect without inclining the cylindrical rotor at a certain angle, thereby reducing the cost of the equipment, to view a stable welding effect even at a narrow turning radius, and to a member having an uneven surface. The present invention provides a probe for friction movement welding that can exhibit homogeneous welding characteristics without burrs or welding defects.

Friction movement welding probe according to an embodiment of the present invention for achieving the above object, in the friction movement welding probe, inversely connected with the friction pin on the bottom surface of the body portion of the probe rotating body having a friction pin at the tip Conical shoulder portion is integrally formed, but the inverted shoulder portion has a slope of a gentle slope than the slope of the friction pin, characterized in that the spiral surface is configured to form a spiral groove.

The present invention can maximize the flow of the surface of the member by changing the structure of the bottom surface of the probe rotating body without tilting the probe at an angle to obtain a homogeneous welding effect can reduce the equipment price, even in a narrow turning radius A stable welding effect can be seen, and even if applied to a member having a non-uniform surface, there is an advantage that can exhibit a homogeneous welding characteristics without burrs or welding defects.

1 is a perspective view of a friction welding probe according to an embodiment of the present invention,
Figure 2 is a perspective view of the main portion of the friction welding probe of Figure 1,
Figure 3 is a cross-sectional configuration of the probe for friction movement welding of Figure 1,
Figure 4 is an embodiment of the probe for friction movement welding of Figure 1,
5A to 5D are photographs showing various forms of the probe for friction movement welding of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention forms an inverted conical shoulder portion connected to the friction pin on the bottom surface of the probe rotating body, and by applying the shape of the screw thread formed on the friction pin to the conical shoulder portion to maximize the flow of the member surface portion to rise by the friction pin metal The flow can be lowered down and a homogeneous welding effect can be obtained.

1 is a perspective view of a friction welding probe according to an embodiment of the present invention, is a perspective view of the friction welding probe of Figure 1, Figure 3 is a cross-sectional configuration of the friction welding probe of Figure 1 to be. 4 is an exemplary view of the friction welding probe of FIG. 1, and FIGS. 5A to 5D are photographs showing various forms of the friction welding probe of the present invention.

1 to 3, the probe for friction movement welding 2 is formed integrally with the reverse conical shoulder portion 10 on the bottom surface of the body portion 8 of the probe rotating body 4, the reverse conical shoulder portion ( 10) is configured by combining the friction pin 12.

The probe rotating body 4 is composed of an upper end 6 connected to a driving unit (not shown) and a lower body 8 to which the friction pin 12 is coupled. The upper end 6 and the lower body 8 of the probe rotating body 4 are formed in a cylindrical shape, and the lower body 8 is formed in a cylindrical shape having a smaller diameter than the upper end 6. The probe rotating body 4 is configured to move along the joining line of the members B1 and B2 by a driving unit (not shown) connected to the upper end 6 and to rotate clockwise along the rotation axis P formed vertically. .

The lower body portion 8 of the probe rotating body 4 is integrally formed with a reverse conical shoulder portion 10 having a spiral groove 14 on the bottom surface. The inverted conical shoulder portion 10 is formed from the bottom of the lower body portion 8 of the probe rotating body 4 to the friction pin 12 so as to maximize the metal flow of the surface of the members B1 and B2. .

The reverse conical shoulder portion 10 may be configured such that the maximum diameter is formed 2 to 4 times the diameter of the friction pin 12. In addition, the inverse conical shoulder portion 10 is formed by the inclined surface of the gentle slope than the inclination of the friction pin 12 to generate a metal flow rising by the friction pin 12 by the reverse conical shoulder portion 10 (B1, B2) It is configured to be prevented by the metal flow of the surface portion. The inclined surface of the reverse conical shoulder portion 10 may be configured to have a slope of 5 to 15 degrees with respect to the bottom surface of the body portion 8 of the reverse conical shoulder portion 10.

Spiral grooves 14 are formed on the inclined surface of the inverse conical shoulder portion 10. In the exemplary embodiment of the present invention, the spiral groove 14 of the inverted conical shoulder portion 10 may be formed in the left direction. Spiral grooves 14 may be formed on the inclined surface of the inverted conical shoulder portion 10 to 1 to 4.

The lower surface of the inverted conical shoulder portion 10 may be detachably coupled to the friction pin 12 to adjust the insertion depth according to the thickness of the members B1 and B2 to be welded, or to replace the shape of the friction pin 12. It is configured to be. In the example of the present invention, the friction pin 12 has been described as detachably coupled to the reverse conical shoulder portion 10, but as a variant, the friction pin 12 may be integrally formed with the reverse conical shoulder portion 10. have.

The friction pin 12 is formed in the form of a straight or tapered screw, as shown in Figure 5a to 5d. 5A and 5B, the spiral groove 16 may be formed on the surface of the friction pin 12 in the same direction as the spiral groove 14 of the inverted conical shoulder portion 10, as shown in FIGS. 5C and 5D. Instead of the spiral groove 16, an uneven portion may be formed. In the exemplary embodiment of the present invention, as shown in FIG. 2, one to four spiral grooves 16 on the left side may be formed on the surface of the friction pin 12.

In an example of the present invention, the spirally concave shoulder portion 10 and the friction pin 12 form spiral grooves 14 and 16 in the left direction, and the probe rotating body 4 is clockwise along the rotation axis P. Although described as being configured to rotate, as a modification, spiral grooves 14 and 16 in the right direction are formed in the reverse conical shoulder portion 10 and the friction pin 12, and rotate counterclockwise along the rotation axis P. FIG. It will be apparent to those skilled in the art.

Now, the operation of the friction welding probe 2 according to an embodiment of the present invention with reference to Figures 1 to 4 will be described.

First, the probe 2 is placed between the two members B1 and B2 and moved along the junction line of the members B1 and B2 disposed adjacently under constant pressure and rotation. At this time, the friction pin 12 coupled to the inverted conical shoulder portion 10 of the probe rotating body 4 rotates in a clockwise direction and penetrates between the two members B1 and B2 to be welded to generate frictional heat. The softened members B1 and B2 are generated by generating a softened region in the members B1 and B2, applying a vertical pressure to the softened members B1 and B2, and moving them along the connection line of the members B1 and B2. Is bonded behind the probe (2).

At this time, the spiral groove 14 formed in the inverted conical shoulder portion 10 of the probe rotating body 4 is generated in the process of maximizing the metal fluidity of the surface portion of the member (B1, B2) and welding as shown in FIG. By lowering the metal flow to be raised by the friction pin 12 to reduce the incidence of burrs and weld defects on the surface of the member (B1, B2), it is possible to increase the welding speed.

In addition, as shown in FIG. 4, the reverse conical shoulder portion 10 of the probe rotating body 4 has the reverse conical shoulder portion 10 of the members B1 and B2 even if the surfaces of the members B1 and B2 to be welded are uneven. Close contact with the upper surface is possible, so that welding defects such as surface defects, root defects and internal defects and burr occurrence rate are reduced, and homogeneous welding is performed.

Friction movement welding probe 2 according to an embodiment of the present invention configured as described above can maximize the flow of the member surface portion (B1, B2) and obtain a homogeneous welding effect without tilting the probe at a certain angle, equipment price In addition to reducing the pressure, there is an advantage in that a stable welding effect can be seen even in a narrow turning radius.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. Therefore, the scope of the present invention should not be defined by the described embodiments, but should be determined by the equivalent of claims and claims.

2 probe 4 probe rotating body
6: upper part 8: body part
10: shoulder portion 12: friction pin
14, 16: spiral groove

Claims (4)

In the probe for friction movement welding,
The inverted conical shoulder portion connected to the friction pin is integrally formed on the bottom surface of the body of the probe rotating body having the friction pin at the tip, the inverted shoulder portion has a slope of a gentle slope than the inclination of the friction pin and the inclined surface Probe for friction movement welding, characterized in that configured to form a spiral groove.
The method of claim 1,
And the inverted conical shoulder portion has an inclined surface having a slope of 5 to 15 ° with respect to the bottom surface of the body portion of the probe rotating body and is formed with a diameter of 2 to 4 times the diameter of the friction pin.
The method according to claim 1 or 2,
Probe for friction movement welding, characterized in that the friction pin is formed with a spiral groove in the same direction as the spiral groove of the reverse conical shoulder portion.
The method of claim 3,
And 1 to 4 spiral grooves are formed on the inclined surface of the reverse conical shoulder portion, and 1 to 4 spiral grooves are formed on the friction pin.
KR1020100008097A 2010-01-28 2010-01-28 Probe for friction stir welding KR20110088266A (en)

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Application Number Priority Date Filing Date Title
KR1020100008097A KR20110088266A (en) 2010-01-28 2010-01-28 Probe for friction stir welding

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Application Number Priority Date Filing Date Title
KR1020100008097A KR20110088266A (en) 2010-01-28 2010-01-28 Probe for friction stir welding

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200324365A1 (en) * 2018-04-02 2020-10-15 Nippon Light Metal Company, Ltd. Method for manufacturing liquid-cooling jacket
KR102166007B1 (en) 2019-08-27 2020-10-15 안동대학교 산학협력단 Probe length adjustable friction stir welding tool
CN112166006A (en) * 2018-08-27 2021-01-01 日本轻金属株式会社 Method for manufacturing heat transfer plate
US11419237B2 (en) * 2017-12-18 2022-08-16 Nippon Light Metal Company, Ltd. Method for manufacturing liquid-cooling jacket
KR20220151970A (en) * 2021-05-07 2022-11-15 (주) 성부 Apparatus for Fillet Friction Stir Welding
US20230053077A1 (en) * 2020-01-24 2023-02-16 Nippon Light Metal Company, Ltd. Method for manufacturing liquid-cooling jacket and friction stir welding method
US11654508B2 (en) * 2017-09-27 2023-05-23 Nippon Light Metal Company, Ltd. Method for producing liquid-cooled jacket
US11654507B2 (en) 2017-12-18 2023-05-23 Nippon Light Metal Company, Ltd. Method for manufacturing liquid-cooling jacket
US11707799B2 (en) 2018-12-19 2023-07-25 Nippon Light Metal Company, Ltd. Joining method
US11707798B2 (en) 2018-04-02 2023-07-25 Nippon Light Metal Company, Ltd. Method for manufacturing liquid-cooled jacket
US11712748B2 (en) * 2017-09-27 2023-08-01 Nippon Light Metal Company, Ltd. Method for producing liquid-cooled jacket

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11654508B2 (en) * 2017-09-27 2023-05-23 Nippon Light Metal Company, Ltd. Method for producing liquid-cooled jacket
US11712748B2 (en) * 2017-09-27 2023-08-01 Nippon Light Metal Company, Ltd. Method for producing liquid-cooled jacket
US11419237B2 (en) * 2017-12-18 2022-08-16 Nippon Light Metal Company, Ltd. Method for manufacturing liquid-cooling jacket
US11654507B2 (en) 2017-12-18 2023-05-23 Nippon Light Metal Company, Ltd. Method for manufacturing liquid-cooling jacket
US20200324365A1 (en) * 2018-04-02 2020-10-15 Nippon Light Metal Company, Ltd. Method for manufacturing liquid-cooling jacket
US11707798B2 (en) 2018-04-02 2023-07-25 Nippon Light Metal Company, Ltd. Method for manufacturing liquid-cooled jacket
CN112166006A (en) * 2018-08-27 2021-01-01 日本轻金属株式会社 Method for manufacturing heat transfer plate
US11413700B2 (en) 2018-08-27 2022-08-16 Nippon Light Metal Company, Ltd. Method for manufacturing heat transfer plate
US11707799B2 (en) 2018-12-19 2023-07-25 Nippon Light Metal Company, Ltd. Joining method
KR102166007B1 (en) 2019-08-27 2020-10-15 안동대학교 산학협력단 Probe length adjustable friction stir welding tool
US20230053077A1 (en) * 2020-01-24 2023-02-16 Nippon Light Metal Company, Ltd. Method for manufacturing liquid-cooling jacket and friction stir welding method
KR20220151970A (en) * 2021-05-07 2022-11-15 (주) 성부 Apparatus for Fillet Friction Stir Welding

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