CN-224222946-U - Flat welding ring suitable for high-frequency induction welding

CN224222946UCN 224222946 UCN224222946 UCN 224222946UCN-224222946-U

Abstract

The application relates to a flat welding ring suitable for high-frequency induction welding, wherein the axial section of the flat welding ring is rectangular, a welded pipe is a relatively sleeved circular pipe, the inner side of the flat welding ring is clung to the welded inner side pipe, the bottom surface of the flat welding ring is clung to the upper plane of the welded outer side pipe, the cross sections of the inner side pipe, the outer side pipe and the flat welding ring are coaxial circular rings, and the flat welding ring seals corresponding gaps to be welded. The application has the characteristics of reasonable design, good welding quality, quick heat absorption and melting, and the like.

Inventors

TANG WEIGANG
BU YONGZHOU
HU LING
Niu Bangshuo
LUO SHOUGEN
WANG PING
HUANG WEIQING
SUN JUNGANG
CHEN PIAOPIAO

Assignees

杭州华光焊接新材料股份有限公司

Dates

Publication Date: 20260512
Application Date: 20250512

Claims (9)

1. A flat welding ring suitable for high-frequency induction welding is characterized in that the axial section of the flat welding ring is rectangular, a welded pipe is a relatively sleeved circular pipe, the inner side of the flat welding ring is clung to the welded inner side pipe, the bottom surface of the flat welding ring is clung to the upper plane of the welded outer side pipe, the cross sections of the inner side pipe, the outer side pipe and the flat welding ring are coaxial circular rings, and the flat welding ring seals corresponding gaps to be welded.
2. The welding flat ring for high-frequency induction welding according to claim 1, wherein the welding flat ring comprises an inner flat ring and an outer flat ring, the axial sections of the inner flat ring and the outer flat ring are rectangular, the gap consists of a gap I and a gap II, the outer diameter of the outer tube is equal to the outer diameter of the middle tube, the inner diameter of the middle tube is equal to the outer diameter of the inner tube, the outer diameter of the inner tube is equal to the inner diameter of the middle tube, the cross sections of the outer tube, the middle tube, the outer flat ring, the inner flat ring and the inner tube are coaxial circular rings, the inner diameter of the inner flat ring is equal to or less than 0.1 millimeter, and the outer diameter of the outer flat ring is larger than the outer diameter of the gap II.
3. The welding flat ring for high-frequency induction welding as claimed in claim 2, wherein the axial sections of the inner flat ring and the outer flat ring are rectangular with axial length greater than circumferential length.
4. The welding flat ring of claim 2, wherein the four corners of the axial cross section of the inner flat ring are provided with identical inner flat ring arc chamfers, and the radius of the inner flat ring arc chamfers is not more than one quarter of any side length of a rectangle formed by the axial cross section of the inner flat ring.
5. The flat welding ring for high-frequency induction welding as set forth in claim 2, wherein the four corners of the axial section of the outer flat ring are all provided with identical outer flat ring circular arc chamfers, and the radius of the outer flat ring circular arc chamfers is not more than one quarter of any side length of a rectangle formed by the axial section of the outer flat ring.
6. The flat welding ring for high-frequency induction welding as claimed in claim 2, wherein the inner flat ring and the outer flat ring are tightly matched and sleeved on the middle pipe.
7. The flat welding ring for high-frequency induction welding as claimed in claim 2, wherein the inner flat ring is sleeved on the middle pipe, and the outer flat ring is sleeved on the outer pipe.
8. The flat welding ring for high frequency induction welding as claimed in claim 2, wherein the first gap is 1 mm-1.4 mm and the first penetration is 4 mm-5 mm.
9. The flat welding ring for high-frequency induction welding according to claim 2, wherein the second gap is between 0.1 mm and 0.3 mm, and the second penetration is between 4 mm and 5mm.

Description

Flat welding ring suitable for high-frequency induction welding Technical Field The application relates to a flat welding ring suitable for high-frequency induction welding, which is mainly suitable for induction welding among a plurality of pipelines. Background In recent years, with the rapid development of the air conditioning and refrigeration industry, the demand for brazing materials for compressor pipelines is increasing, and the requirements for automation and precision of brazing modes are also increasing. The artificial flame welding is widely applied to welding copper and copper alloy in a compressor pipeline, and has the advantages of flexibility of a welding mode, diversity of materials, low cost and the like, so that the artificial flame welding is always a mainstream welding mode. However, with the improvement of modern technology, flame welding has the problems of high technical skill requirement, unstable welding quality of products, large potential safety hazard, insufficient environmental protection and the like. The induction welding is a technological method for loading current on an induction coil, heating welding edges under the action of skin effect and proximity effect, melting metal, and rapidly cooling and crystallizing to form a welding seam, and has the characteristics of high welding speed, environment friendliness, high welding seam strength, easiness in realization of high automation and the like. At present, most of induction welding compressor pipes on the market adopt copper-phosphorus welding rings with circular sections, but the welding rings have small contact areas with welded parent metals, often have the condition of insufficient welding, and especially have the quality center of the circular welding rings which are far away from the welded gap distance, are not beneficial to uniformly filling corresponding gaps after the circular welding rings are melted, and are easy to cause poor welding. Disclosure of Invention The technical problem solved by the application is to overcome the defects in the prior art, and provide the flat welding ring which has reasonable structural design, good welding quality and quick heat absorption and melting and is suitable for high-frequency induction welding. The technical scheme includes that the flat welding ring suitable for high-frequency induction welding is characterized in that the axial section of the flat welding ring is rectangular, a welded pipe is a round pipe which is sleeved oppositely, the inner side of the flat welding ring can be clung to the welded inner side pipe, the bottom surface of the flat welding ring can be clung to the upper plane of the welded outer side pipe, the cross sections of the inner side pipe, the outer side pipe and the flat welding ring are coaxial circular rings, the mass center of the flat welding ring is close to a corresponding gap to be welded, and the flat welding ring seals the corresponding gap to be welded. When the induction heating device works, the flat welding ring is relatively easy to melt and is closed at the upper part of a gap to be welded in a downstream manner, so that the welding quality is good, and the heat absorption melting is fast. The flat welding ring comprises an inner flat ring and an outer flat ring, the gap consists of a gap I and a gap II, the inner diameter of the outer tube and the outer diameter of the middle tube are the gap I, the inner diameter of the middle tube and the outer diameter of the inner tube are the gap II, the cross sections of the outer tube, the middle tube, the outer flat ring, the inner flat ring and the inner tube are coaxial circular rings, the inner diameter of the inner flat ring and the outer diameter of the inner tube are less than or equal to 0.1 millimeter, the outer diameter of the outer flat ring is larger than the outer circumference of the gap II, the axial sections of the inner flat ring and the outer flat ring are rectangular, and the axial lengths of the inner flat ring and the outer flat ring are longer than the circumferential length, so that the mass centers of the inner flat ring and the outer flat ring are relatively close to the corresponding gaps to be welded, and flow into the gaps relatively easily after melting, and the penetration is improved. The four corners of the axial section of the inner flat ring are provided with identical inner flat ring arc chamfers, and the radius of each inner flat ring arc chamfer is not more than one quarter of any side length of a rectangle formed by the axial section of the inner flat ring. The four corners of the axial section of the outer flat ring are provided with identical outer flat ring arc chamfers, and the radius of each outer flat ring arc chamfer is not more than one quarter of any side length of a rectangle formed by the axial section of the outer flat ring. Through the design, the flat welding ring has the axial section of a rectangle, and has circular arc transition from