CN115156767A - Novel anti-fatigue stud welding ceramic ring - Google Patents
Novel anti-fatigue stud welding ceramic ring Download PDFInfo
- Publication number
- CN115156767A CN115156767A CN202210811240.4A CN202210811240A CN115156767A CN 115156767 A CN115156767 A CN 115156767A CN 202210811240 A CN202210811240 A CN 202210811240A CN 115156767 A CN115156767 A CN 115156767A
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- Prior art keywords
- welding
- ceramic ring
- stud
- ring body
- fatigue
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- 238000003466 welding Methods 0.000 title claims abstract description 75
- 239000000919 ceramic Substances 0.000 title claims abstract description 59
- 230000002929 anti-fatigue Effects 0.000 title claims abstract description 16
- 229910052573 porcelain Inorganic materials 0.000 claims abstract description 23
- 230000007547 defect Effects 0.000 claims abstract description 8
- 238000005520 cutting process Methods 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 238000005336 cracking Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 230000009471 action Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 19
- 206010016256 fatigue Diseases 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 239000002131 composite material Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 2
- 230000035772 mutation Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Architecture (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
A novel anti-fatigue stud welding ceramic ring relates to the technical field of welding ceramic rings and comprises a ceramic ring body, wherein a plurality of limiting blocks are uniformly distributed on the inner wall surface of the ceramic ring body around an axis, one ends of the limiting blocks are fixedly connected with the inner wall of the ceramic ring body, one ends of the limiting blocks, which are far away from the inner wall of the ceramic ring body, jointly form a guiding combined surface, an airflow channel for harmful gas to pass through is formed between the adjacent limiting blocks, and the guiding combined surface is matched with the outer surface of a stud for use; the lower part of the inner wall of the porcelain ring body is an inclined plane which is transited towards the outside, and the lower edge of the inclined plane is coplanar. The invention provides a novel anti-fatigue stud welding ceramic ring, and aims to reduce the welding initial defect and the stress concentration effect of a formed welding ring, avoid fatigue cracking of a stud under the action of reciprocating load and prolong the service life of a steel-concrete combined structure by improving the ceramic ring.
Description
Technical Field
The invention relates to the technical field of welding ceramic rings, in particular to a novel anti-fatigue stud welding ceramic ring.
Background
As a key stress component of the combined structure, the stud connects the steel beam with the concrete slab to form an integral structure and cooperatively stress, and plays a role in transferring shear force between steel and concrete interface layers. In the steel-concrete composite structure, the stud bolt needs to be welded with the steel beam to form a whole, the ceramic ring is a key device which is sleeved at the root of the stud bolt and assists in forming a welding seam (welding ring), the key device is mainly used for forcing the welding seam to form (forming a regular welding ring), and the quality of the forming seam (welding ring) directly determines the using performance of the stud bolt and the composite structure.
At present, a commonly used ceramic ring is of a stepped tubular structure (as shown in fig. 1), a first cavity with a smaller inner diameter and a second cavity with a larger inner diameter are arranged in an inner cavity of the ceramic ring, the first cavity is positioned at the upper part of the ceramic ring, the second cavity is coaxially connected to the lower end of the first cavity, and a plurality of gas exhaust cutting grooves which penetrate through the second cavity are uniformly arranged at the bottom of the ceramic ring around an axis. During welding, the inner surface of the first cavity is in close contact with the outer surface of the stud or the stud, the bottom of the stud or the stud is inserted into the second cavity, and the special matching structure causes great hidden troubles to exist when the stud is welded with a steel plate, and the hidden troubles are specifically shown as follows:
(1) During welding, the inner surface of the first cavity is in close contact with the outer surface of the stud or bolt, so that the harmful gas is prevented from being discharged, and the harmful gas generated during welding can be accumulated in the second cavity for a long time and is slowly discharged outwards along the cutting groove. Harmful gas is not smoothly discharged, the detention time is long, the roots of the studs or studs are corroded by different degrees, residual gas easily forms welding initial defects such as air holes in the welding process, and the durability and the use safety of the studs are threatened.
(2) In the welding process, along with the discharge of harmful gas, the welding liquid flows out (or is extruded out) from the cutting groove at the lower end of the porcelain ring, so that obvious welding initial defects are generated at the position, fatigue cracking is easily induced under the reciprocating action of load, and the fatigue life of the stud is greatly reduced. Once the stud embedded in the concrete generates fatigue cracking, the shearing resistance of the stud is reduced, so that the local rigidity of the steel-concrete composite structure is deteriorated, the use safety of the steel-concrete composite structure is threatened, and the service life of the composite structure is shortened.
(3) After welding, the side wall and the top wall of the second cavity are respectively of a vertical structure and a horizontal structure, typical geometric sudden change is shown, under the action of external load, relatively obvious stress concentration is generated at the geometric sudden change part, fatigue cracking is easily induced, and the service life of the steel-concrete combined structure is shortened.
Disclosure of Invention
The invention provides a novel anti-fatigue stud welding ceramic ring, and aims to reduce the welding initial defect and the stress concentration effect of a formed welding ring, improve the fatigue performance of a stud and prolong the service life of a steel-concrete combined structure by improving the ceramic ring.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a novel anti-fatigue stud welding ceramic ring comprises a ceramic ring body, wherein a plurality of limiting blocks are uniformly distributed on the inner wall surface of the ceramic ring body around an axis, one ends of the limiting blocks are fixedly connected with the inner wall of the ceramic ring body, one ends of the limiting blocks, which are far away from the inner wall of the ceramic ring body, jointly form a guide combined surface, an airflow channel for harmful gas to pass through is formed between the adjacent limiting blocks, and the guide combined surface is matched with the outer surface of a stud for use; the lower part of the inner wall of the porcelain ring body is an inclined plane which is transited towards the outside, and the lower edge of the inclined plane is coplanar.
Preferably, the porcelain ring body is of a stepped tubular structure, the inclined plane is an arc-shaped curved surface, and the arc-shaped curved surface enables the lower end of the inner hole of the porcelain ring body to form a horn-mouth-shaped structure which is open towards the outside.
Preferably, the inner hole of the porcelain ring body is of a cylindrical structure, and the bottom end of the cylindrical structure is connected with the top end of the bell-mouth-shaped structure.
Preferably, the limiting block extends downwards along the inner wall of the ceramic ring where the cylindrical structure is located.
Preferably, in the welding process, a siphon structure is formed between the bell-mouth-shaped structure and the plurality of airflow channels, and harmful gas is promoted to be discharged rapidly in a siphon mode.
Preferably, during welding, after the molten pool is fully formed, the bolt is pressed downwards, the welding liquid in the molten pool fills the bell-mouth-shaped structure, and the cylindrical structure forms a space for containing excessive welding liquid.
Preferably, after welding is finished, a truncated cone-shaped welding ring matched with the horn mouth-shaped structure in shape and size is formed at the bottom of the stud, and stress concentration at the welding seam is dispersed through the truncated cone-shaped welding ring.
The novel anti-fatigue stud welding ceramic ring has the beneficial effects that:
1. the improved ceramic ring is provided with a limiting block inside the upper edge, the limiting block is used for tightly connecting the ceramic ring and the stud and plays a role in guiding and positioning the stud, the inner wall of the ceramic ring is separated from the surface of the stud by the limiting block, an air flow channel is formed between the adjacent limiting blocks, and harmful gas can be quickly discharged by means of siphon effect.
2. The bottom of the inner hole of the improved ceramic ring is in a horn mouth shape, and the shape of the welding ring on one side of the steel plate can be shaped, so that the appearance is smooth, the geometric mutation of the part is avoided, and the stress concentration at the welding seam is greatly reduced.
3. The improved ceramic ring cancels the gas discharge cutting groove at the root of the ceramic ring, avoids the initial welding defect formed by extruding the cutting groove by welding liquid, reduces the risk of fatigue cracking at the root of the stud and prolongs the service life of the combined structure.
Drawings
FIG. 1 is a cross-sectional view of the ceramic ring of the present invention compared to a conventional ceramic ring (the left side is the conventional ceramic ring, the right side is the ceramic ring of the present invention, the same applies below);
FIG. 2 is a top view comparing the present invention with the prior art porcelain ring;
FIG. 3 is a cross-sectional view comparing the present invention with a prior art porcelain ring insert pin in preparation for welding;
FIG. 4 is a cross-sectional view comparing the structure of the present invention with that of a conventional porcelain ring when the stud is lifted up at the time of starting welding;
FIG. 5 is a cross-sectional structure comparison diagram in the welding process of the present invention and the existing porcelain ring;
FIG. 6 is a cross-sectional view comparing the present invention with a prior art ceramic ring weld pool after the formation of the stud;
FIG. 7 is a schematic view of the weld forming portion of the present invention;
FIG. 8 is a cross-sectional view comparing the present invention with the prior art porcelain ring in which the welding is stopped;
01. a first cavity; 02. a second cavity; 03. gas is discharged out of the cutting groove; 04. the existing porcelain ring; 05. a cylindrical weld ring surrounding the stud; 1. a porcelain ring body; 2. a cylindrical structure; 3. a limiting block; 4. an arc-shaped curved surface; 5. a bell-mouth shaped structure; 6. an arc striking knot; 7. a stud; 8. a steel plate; 9. an electric arc; 10. a molten pool; 11. harmful gases; 12. extruding the welding liquid out of the molten pool; 13. a portion where a weld is formed; 14. stress concentration is shown; 15. cooling crystallization (only position shown, not drawn in detail); 16. geometric mutation; 17. a circular truncated cone-shaped welding ring.
Detailed Description
In the following, embodiments of the present invention are described in detail in a stepwise manner, which is merely a preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "top", "bottom", "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for the purpose of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation and a specific orientation configuration and operation, and thus, should not be construed as limiting the present invention.
In the initial embodiment, the novel anti-fatigue stud welding ceramic ring disclosed by the invention comprises a ceramic ring body 1, wherein a plurality of limiting blocks 3 are uniformly distributed on the inner wall surface of the ceramic ring body 1 around an axis, one end of each limiting block 3 is fixedly connected with the inner wall of the ceramic ring body 1, one ends of the limiting blocks 3, which are far away from the inner wall of the ceramic ring body 1, form a guiding combination surface together, an airflow channel for harmful gas 11 to pass through is formed between the adjacent limiting blocks 3, and the guiding combination surface is matched with the outer surface of a stud 7; the lower part of the inner wall of the ceramic ring body is an inclined plane which is in outward transition, and the lower edge of the inclined plane is coplanar, so that a cutting groove at the bottom end of the original ceramic ring structure is cancelled, and the molten metal is prevented from being extruded along the cutting groove to form the initial welding defect.
In a further embodiment, as shown in fig. 1 and 2, the porcelain ring body 1 is of a stepped tubular structure, the inclined surface is an arc-shaped curved surface 4, and the arc-shaped curved surface 4 enables the lower end of the inner hole of the porcelain ring body to form a flared structure 5 which is open to the outside.
In a further embodiment, as shown in fig. 1 and 2, the inner hole of the porcelain ring body 1 is a cylindrical structure 2, and the bottom end of the cylindrical structure 2 is connected with the top end of the bell-mouth-shaped structure 5.
In a further embodiment, as shown in fig. 1 and 2, the limiting block 3 extends downwards along the inner wall of the porcelain ring where the cylindrical structure is located, that is, the limiting block may be an elongated block-shaped structure disposed along the axial direction of the cylindrical structure. The limiting block forms an airflow channel for harmful gas to pass through, and the limiting block can play a role in guiding so that the stud can be positioned in the ceramic ring and is tightly connected with the ceramic ring.
In a further embodiment, as shown in fig. 3-7, during the welding process, a siphon structure is formed between the bell-mouth-shaped structure 5 and the plurality of gas flow channels, and the harmful gas 11 is promoted to be rapidly discharged out in a siphon manner. Because the size of the airflow channel is far smaller than the inner diameter size of the bell-mouth-shaped structure, the flow velocity of harmful gas in the airflow channel is increased, the siphon effect is formed just like a chimney, the harmful gas can be rapidly discharged, and the initial welding defect formed by extruding welding liquid from the cutting groove is avoided because the gas discharge cutting groove at the root part of the ceramic ring is cancelled.
In a further embodiment, as shown in fig. 3-7, during welding, when the weld pool 10 is fully formed, the stud 7 is pressed downwards and the weld liquid in the weld pool 10 fills the bell-mouth-shaped structure 5, said cylindrical structure 2 forming a space for excess weld liquid, which rises upwards.
In a further embodiment, as shown in fig. 3-7, after the welding is finished, a truncated cone-shaped welding ring 17 matched with the shape and size of the bell-mouth-shaped structure 5 is formed at the bottom of the stud, and concentrated stress at the welding seam is dispersed through the truncated cone-shaped welding ring 17. Due to the special shape of the truncated cone-shaped welding ring 17, when the stud bears shearing force, stress can be dispersed through the arc-shaped curved surface, the stress concentration effect of the welding line at the root of the stud is reduced, and the risk of fatigue cracking is reduced.
Claims (7)
1. The utility model provides a novel antifatigue stud welding porcelain ring, characterized in that: the ceramic ring comprises a ceramic ring body, wherein a plurality of limiting blocks are uniformly distributed on the inner wall surface of the ceramic ring body around an axis, one end of each limiting block is fixedly connected with the inner wall of the ceramic ring body, one ends of the limiting blocks, which are far away from the inner wall of the ceramic ring body, jointly form a guide combined surface, an airflow channel for harmful gas to pass through is formed between the adjacent limiting blocks, and the guide combined surface is matched with the outer surface of a stud for use; the lower part of the inner wall of the porcelain ring body is an inclined plane which is transited towards the outside, and the lower edge of the inclined plane is coplanar.
2. The novel anti-fatigue stud welding ceramic ring as claimed in claim 1, wherein: the porcelain ring body is of a stepped tubular structure, the inclined plane is an arc-shaped curved surface, and the arc-shaped curved surface enables the lower end of the inner hole of the porcelain ring body to form a horn mouth-shaped structure which is open towards the outside.
3. The novel anti-fatigue stud welding ceramic ring as claimed in claim 2, wherein: the inner hole of the porcelain ring body is of a cylindrical structure, and the bottom end of the cylindrical structure is connected with the top end of the horn mouth-shaped structure.
4. The new anti-fatigue stud welding ceramic ring as claimed in claim 3, wherein: the limiting block extends downwards along the inner wall of the porcelain ring where the cylindrical structure is located.
5. The new anti-fatigue stud welding ceramic ring according to any one of claims 2-4, characterized in that: in the welding process, a siphon structure is formed between the horn-shaped structure and the airflow channels, the harmful gas is promoted to be discharged quickly in a siphon mode, a gas discharge cutting groove at the root of the ceramic ring is omitted, and the initial welding defect caused by extruding the cutting groove by welding liquid is avoided.
6. The new anti-fatigue stud welding ceramic ring as claimed in claim 3 or 4, wherein: during welding, after a molten pool is fully formed, the stud is pressed downwards, the welding liquid in the molten pool fills the bell-mouth-shaped structure, and the cylindrical structure forms a space for containing redundant welding liquid.
7. The new anti-fatigue stud welding ceramic ring as claimed in any one of claims 2 to 4, wherein: after welding, a truncated cone-shaped welding ring matched with the horn mouth-shaped structure in shape and size is formed at the bottom of the stud, and concentrated stress at the welding seam is dispersed through the truncated cone-shaped welding ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210811240.4A CN115156767A (en) | 2022-07-11 | 2022-07-11 | Novel anti-fatigue stud welding ceramic ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210811240.4A CN115156767A (en) | 2022-07-11 | 2022-07-11 | Novel anti-fatigue stud welding ceramic ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115156767A true CN115156767A (en) | 2022-10-11 |
Family
ID=83493152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210811240.4A Withdrawn CN115156767A (en) | 2022-07-11 | 2022-07-11 | Novel anti-fatigue stud welding ceramic ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115156767A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB809049A (en) * | 1955-12-13 | 1959-02-18 | Philips Electrical Ind Ltd | Improvements in or relating to stud welding |
| JPS61200666U (en) * | 1985-06-01 | 1986-12-16 | ||
| DE3938222A1 (en) * | 1989-01-21 | 1990-08-02 | Schweiss Service Gmbh & Co Kg | Ceramic ring for stud welding - with specified concave shape of contact end with gas vents |
| DE9115790U1 (en) * | 1991-12-19 | 1992-03-12 | TRW Nelson Bolzenschweiß-Technik GmbH & Co KG, 5820 Gevelsberg | Dielectric ring for stud welding |
| US5135154A (en) * | 1989-11-13 | 1992-08-04 | Okabe Co., Ltd. | Reusable stud welding ferrule containing boron nitride |
| JPH1034338A (en) * | 1996-07-18 | 1998-02-10 | Kajima Corp | Method and structure of stud welding |
| DE202005014248U1 (en) * | 2005-09-09 | 2005-11-10 | Heinz Soyer Bolzenschweisstechnik Gmbh | Bolt welding arrangement for joining ring-shaped component onto support with hole or opening comprises guide which inserts into welding component and projects beyond end face to act as guide during welding |
| JP2011240375A (en) * | 2010-05-19 | 2011-12-01 | Shigeyuki Matsui | Ferrule for stud welding |
| CN104084676A (en) * | 2014-08-04 | 2014-10-08 | 东莞台一盈拓科技股份有限公司 | Stud welding method of amorphous alloy |
| CN204262672U (en) * | 2014-12-01 | 2015-04-15 | 宁乡三湘特种陶瓷有限公司 | A kind of weldering nail porcelain ring that can reuse |
| CN105636733A (en) * | 2013-08-26 | 2016-06-01 | 尼尔森焊钉焊接有限公司 | Ferrule for welding a stud to work-piece |
| CN213868333U (en) * | 2020-11-13 | 2021-08-03 | 福州大学 | Stud for building |
-
2022
- 2022-07-11 CN CN202210811240.4A patent/CN115156767A/en not_active Withdrawn
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB809049A (en) * | 1955-12-13 | 1959-02-18 | Philips Electrical Ind Ltd | Improvements in or relating to stud welding |
| JPS61200666U (en) * | 1985-06-01 | 1986-12-16 | ||
| DE3938222A1 (en) * | 1989-01-21 | 1990-08-02 | Schweiss Service Gmbh & Co Kg | Ceramic ring for stud welding - with specified concave shape of contact end with gas vents |
| US5135154A (en) * | 1989-11-13 | 1992-08-04 | Okabe Co., Ltd. | Reusable stud welding ferrule containing boron nitride |
| DE9115790U1 (en) * | 1991-12-19 | 1992-03-12 | TRW Nelson Bolzenschweiß-Technik GmbH & Co KG, 5820 Gevelsberg | Dielectric ring for stud welding |
| JPH1034338A (en) * | 1996-07-18 | 1998-02-10 | Kajima Corp | Method and structure of stud welding |
| DE202005014248U1 (en) * | 2005-09-09 | 2005-11-10 | Heinz Soyer Bolzenschweisstechnik Gmbh | Bolt welding arrangement for joining ring-shaped component onto support with hole or opening comprises guide which inserts into welding component and projects beyond end face to act as guide during welding |
| JP2011240375A (en) * | 2010-05-19 | 2011-12-01 | Shigeyuki Matsui | Ferrule for stud welding |
| CN105636733A (en) * | 2013-08-26 | 2016-06-01 | 尼尔森焊钉焊接有限公司 | Ferrule for welding a stud to work-piece |
| CN104084676A (en) * | 2014-08-04 | 2014-10-08 | 东莞台一盈拓科技股份有限公司 | Stud welding method of amorphous alloy |
| CN204262672U (en) * | 2014-12-01 | 2015-04-15 | 宁乡三湘特种陶瓷有限公司 | A kind of weldering nail porcelain ring that can reuse |
| CN213868333U (en) * | 2020-11-13 | 2021-08-03 | 福州大学 | Stud for building |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20221011 |