CN109317844A - A kind of welding method of slope changing flange component - Google Patents
A kind of welding method of slope changing flange component Download PDFInfo
- Publication number
- CN109317844A CN109317844A CN201811356926.9A CN201811356926A CN109317844A CN 109317844 A CN109317844 A CN 109317844A CN 201811356926 A CN201811356926 A CN 201811356926A CN 109317844 A CN109317844 A CN 109317844A
- Authority
- CN
- China
- Prior art keywords
- slope changing
- flange component
- changing flange
- welding
- slope
- Prior art date
- Legal status (The legal status 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 status listed.)
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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
- B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
-
- 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
- B23K28/00—Welding or cutting not covered by any of the preceding groups, e.g. electrolytic welding
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a kind of welding methods of slope changing flange component, the following steps are included: first preparation must be carried out in accordance with regulations in slope changing flange Member Lip by (1), it must be clean, impulse- free robustness, without gas cutting slag, without grease or paint, slope changing flange component is preheated, (2) slope changing flange component groove type U-shaped groove formula is split into weld, (3) when slope changing flange component being carried out the welding of first layer weld seam, select low current, speed of welding is slightly slow, (4) slope changing flange component is subjected to hidden lino removal immediately, it is welded high-efficient, the fastness of increased slope changing flange component simultaneously, welding method is simple, it is easily operated.
Description
Technical field
The present invention relates to welding technique fields, and in particular to a kind of welding method of slope changing flange component.
Background technique
Welding is exactly metal works to be connected with molten metal, or repair metal implements, weldering with molten metal
Connect be by heating, pressurizeing, or both be used in combination, with or do not have to wlding, make two workpiece generate atom between phase counterdiffusion, formed smelting
The processing technology and connecting mode, welding technique that gold combines are mainly used on base material metal, and welded flange connection is exactly two
A pipeline, pipe fitting or equipment are first individually fixed in a welding.Between two welding, in addition flange gasket, is existed with bolt fastening
Together, connection is completed.Welding is the important connection type of pressure piping construction.Welded flange connects easy to use, Neng Goucheng
By biggish pressure.Welded flange is widely used in the fields such as petroleum, chemical industry, natural gas, power station, metallurgical pipeline, but logical
It phenomena such as often welding will appear stomata, slag inclusion, lack of penetration, incomplete fusion, crackle, pit, undercut, overlap, not only results in this way
The damage such as equipment, seriously it also occur that safety accident, therefore welding method thus be important.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of welding methods of slope changing flange component.Its efficiency welded
Height, while the fastness of increased slope changing flange component, welding method is simple, easily operated.
To solve the above-mentioned problems, the present invention provides following technical schemes: a kind of welding method of slope changing flange component,
Steps are as follows for the welding method:
(1) preparation first must be carried out in accordance with regulations in slope changing flange Member Lip, it is necessary to which clean, impulse- free robustness, no gas cutting slag are oil-free
Rouge or paint preheat slope changing flange component, are preheated to 150 ~ 250 DEG C of temperature；
(2) slope changing flange component groove type is split into U-shaped groove formula to weld, groove shape answers round and smooth no slag impulse- free robustness；
(3) when slope changing flange component being carried out the welding of first layer weld seam, low current is selected, speed of welding is slightly slow, low current 140
~ 145A, speed of welding 4mm/s reduce the fusion penetration of slope changing flange component, so that slope changing flange be made to be melted to first layer weld metal
In ratio be up to 30%；
(4) by slope changing flange component groove postheating, 200 ~ 350 DEG C are heated to, 2 ~ 5 hours are kept the temperature, then by slope changing flange
Component carries out hidden lino removal immediately, and tempering temperature should be controlled at 550 ~ 650 DEG C, keeps the temperature 2 ~ 3 hours, stops heating,
Cool down it automatically.
Slope changing flange component is preheated as present invention further optimization mode step (1), preheating temperature is 50 DEG C of fire
Flame slowly, uniformly preheat.
It selects acidic electrode to be welded as the present invention further optimization mode welding method, contains in electrode coating
There are a large amount of silica.
The quenching for preventing weld seam is covered as present invention further optimization mode postwelding reply weld seam.
As present invention further optimization mode, slope changing flange weld should be cleaned after cooling, use one kind
The metal cleaner of environmental protection, which includes following constituent: complexed surfactant: 20 parts；Triethanolamine oleate: 25
Part；Triethanolamine: 25 parts；Boratex: 10 parts；Builder: 8 parts；Tea Saponin: 5 parts, antirust agent: 8 parts and water.
Beneficial effect
A kind of welding method of slope changing flange component of the present invention carries out the pre-heat treatment before welding, prevents cold crack, improvement connects
Head plasticity, reduces postwelding residual stress, using acidic electrode good manufacturability, splashes few, and the removability of slag is good, and acidic electrode is anti-
Stomata performance is good, and weld metal seldom generates the stomata as caused by hydrogen, insensitive to rust, oil etc., harmful gas that when welding generates
Body is few, low in the pollution of the environment.The welding method is simple, easily operated.
Specific embodiment
Embodiment 1
A kind of welding method of slope changing flange component, steps are as follows for the welding method:
(1) preparation first must be carried out in accordance with regulations in slope changing flange Member Lip, it is necessary to which clean, impulse- free robustness, no gas cutting slag are oil-free
Rouge or paint preheat slope changing flange component, and preheating temperature is that 50 DEG C of flames slowly, uniformly preheat, and are preheated to temperature
150℃；
(2) slope changing flange component groove type U-shaped groove formula being split into weld, groove shape answers round and smooth no slag impulse- free robustness,
It is welded with acidic electrode；
(3) when slope changing flange component being carried out the welding of first layer weld seam, low current is selected, speed of welding is slightly slow, and low current is
140A, speed of welding 4mm/s reduce the fusion penetration of slope changing flange component, so that slope changing flange be made to be melted to first layer weld metal
In ratio be up to 30%；
(4) by slope changing flange component groove postheating, 200 DEG C are heated to, 2 hours is kept the temperature, then founds slope changing flange component
Hidden lino removal is carried out, tempering temperature should be controlled at 550 DEG C, keep the temperature 2 hours, and postwelding reply weld seam capping prevents from welding
The quenching of seam stops heating, cools down it automatically.
(5) slope changing flange weld should be cleaned after cooling, uses a kind of metal cleaner of environmental protection, the cleaning agent
Including following constituent: complexed surfactant: 20 parts；Triethanolamine oleate: 25 parts；Triethanolamine: 25 parts；Boratex:
10 parts；Builder: 8 parts；Tea Saponin: 5 parts, antirust agent: 8 parts and water.
Embodiment 2
A kind of welding method of slope changing flange component, steps are as follows for the welding method:
(1) preparation first must be carried out in accordance with regulations in slope changing flange Member Lip, it is necessary to which clean, impulse- free robustness, no gas cutting slag are oil-free
Rouge or paint preheat slope changing flange component, and preheating temperature is that 50 DEG C of flames slowly, uniformly preheat, and are preheated to temperature
180℃；
(2) slope changing flange component groove type U-shaped groove formula being split into weld, groove shape answers round and smooth no slag impulse- free robustness,
It is welded with acidic electrode；
(3) when slope changing flange component being carried out the welding of first layer weld seam, low current is selected, speed of welding is slightly slow, and low current is
141A, speed of welding 4mm/s reduce the fusion penetration of slope changing flange component, so that slope changing flange be made to be melted to first layer weld metal
In ratio be up to 30%；
(4) by slope changing flange component groove postheating, 230 DEG C are heated to, 3 hours is kept the temperature, then founds slope changing flange component
Hidden lino removal is carried out, tempering temperature should be controlled at 580 DEG C, keep the temperature 2 hours, and postwelding reply weld seam capping prevents from welding
The quenching of seam stops heating, cools down it automatically.
(5) slope changing flange weld should be cleaned after cooling, uses a kind of metal cleaner of environmental protection, the cleaning agent
Including following constituent: complexed surfactant: 20 parts；Triethanolamine oleate: 25 parts；Triethanolamine: 25 parts；Boratex:
10 parts；Builder: 8 parts；Tea Saponin: 5 parts, antirust agent: 8 parts and water.
Embodiment 3
A kind of welding method of slope changing flange component, steps are as follows for the welding method:
(1) preparation first must be carried out in accordance with regulations in slope changing flange Member Lip, it is necessary to which clean, impulse- free robustness, no gas cutting slag are oil-free
Rouge or paint preheat slope changing flange component, and preheating temperature is that 50 DEG C of flames slowly, uniformly preheat, and are preheated to temperature
200℃；
(2) slope changing flange component groove type U-shaped groove formula being split into weld, groove shape answers round and smooth no slag impulse- free robustness,
It is welded with acidic electrode；
(3) when slope changing flange component being carried out the welding of first layer weld seam, low current is selected, speed of welding is slightly slow, and low current is
142A, speed of welding 4mm/s reduce the fusion penetration of slope changing flange component, so that slope changing flange be made to be melted to first layer weld metal
In ratio be up to 30%；
(4) by slope changing flange component groove postheating, 250 DEG C are heated to, 4 hours is kept the temperature, then founds slope changing flange component
Hidden lino removal is carried out, tempering temperature should be controlled at 600 DEG C, keep the temperature 2 ~ 3 hours, and postwelding reply weld seam capping prevents
The quenching of weld seam stops heating, cools down it automatically.
(5) slope changing flange weld should be cleaned after cooling, uses a kind of metal cleaner of environmental protection, the cleaning agent
Including following constituent: complexed surfactant: 20 parts；Triethanolamine oleate: 25 parts；Triethanolamine: 25 parts；Boratex:
10 parts；Builder: 8 parts；Tea Saponin: 5 parts, antirust agent: 8 parts and water.
Product qualification rate statistical form
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, although with reference to the foregoing embodiments
Invention is explained in detail, for those skilled in the art, still can be to foregoing embodiments institute
The technical solution of record is modified or equivalent replacement of some of the technical features.It is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (4)
1. a kind of welding method of slope changing flange component, which is characterized in that steps are as follows for the welding method:
(1) preparation first must be carried out in accordance with regulations in slope changing flange Member Lip, it is necessary to which clean, impulse- free robustness, no gas cutting slag are oil-free
Rouge or paint preheat slope changing flange component, are preheated to 150 ~ 250 DEG C of temperature；
(2) slope changing flange component groove type is split into U-shaped groove formula to weld, groove shape answers round and smooth no slag impulse- free robustness；
(3) when slope changing flange component being carried out the welding of first layer weld seam, low current is selected, speed of welding is slightly slow, low current 140
~ 145A, speed of welding 4mm/s reduce the fusion penetration of slope changing flange component, so that slope changing flange be made to be melted to first layer weld metal
In ratio be up to 30%；
(4) by slope changing flange component groove postheating, 200 ~ 350 DEG C are heated to, 2 ~ 5 hours are kept the temperature, then by slope changing flange
Component carries out hidden lino removal immediately, and tempering temperature should be controlled at 550 ~ 650 DEG C, keeps the temperature 2 ~ 3 hours, stops heating,
Cool down it automatically.
2. a kind of welding method of slope changing flange component according to claim 1, which is characterized in that the step (1) will become
The preheating of slope flange component, preheating temperature are that 50 DEG C of flames carry out slow, uniform preheating.
3. a kind of welding method of slope changing flange component according to claim 1, which is characterized in that the welding method is selected
Acidic electrode is welded, and a large amount of silica are contained in electrode coating.
4. a kind of welding method of slope changing flange component according to claim 1, which is characterized in that the slope changing flange postwelding
Reply weld seam covers the quenching for preventing weld seam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811356926.9A CN109317844A (en) | 2018-11-15 | 2018-11-15 | A kind of welding method of slope changing flange component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811356926.9A CN109317844A (en) | 2018-11-15 | 2018-11-15 | A kind of welding method of slope changing flange component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109317844A true CN109317844A (en) | 2019-02-12 |
Family
ID=65257615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811356926.9A Pending CN109317844A (en) | 2018-11-15 | 2018-11-15 | A kind of welding method of slope changing flange component |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202715435U (en) * | 2012-06-21 | 2013-02-06 | 桂林桂冶重工股份有限公司 | Pulverizer hood drum and flange connection structure |
| CN105478961A (en) * | 2015-12-31 | 2016-04-13 | 浙江盛达铁塔有限公司 | T-shaped welding method |
| CN106984889A (en) * | 2017-03-30 | 2017-07-28 | 安徽好运机械有限公司 | The production technology of telescopic boom body |
| CN108098171A (en) * | 2017-11-27 | 2018-06-01 | 江苏振光电力设备制造有限公司 | A kind of efficient welding method |
-
2018
- 2018-11-15 CN CN201811356926.9A patent/CN109317844A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202715435U (en) * | 2012-06-21 | 2013-02-06 | 桂林桂冶重工股份有限公司 | Pulverizer hood drum and flange connection structure |
| CN105478961A (en) * | 2015-12-31 | 2016-04-13 | 浙江盛达铁塔有限公司 | T-shaped welding method |
| CN106984889A (en) * | 2017-03-30 | 2017-07-28 | 安徽好运机械有限公司 | The production technology of telescopic boom body |
| CN108098171A (en) * | 2017-11-27 | 2018-06-01 | 江苏振光电力设备制造有限公司 | A kind of efficient welding method |
Non-Patent Citations (2)
| Title |
|---|
| LI19760801: "常见焊接缺陷以及解决方法分析", 《百度文库》 * |
| 李志清等: "《电焊条与应用知识》", 31 August 1990, 中国铁道出版社 * |
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Application publication date: 20190212 |
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