CN109738422A - A method of checking pipeline argon gas inside filling degree - Google Patents
A method of checking pipeline argon gas inside filling degree Download PDFInfo
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- CN109738422A CN109738422A CN201811523202.9A CN201811523202A CN109738422A CN 109738422 A CN109738422 A CN 109738422A CN 201811523202 A CN201811523202 A CN 201811523202A CN 109738422 A CN109738422 A CN 109738422A
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- argon gas
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Abstract
A method of it checking pipeline argon gas inside filling degree, includes the following steps: that the groove of pipeline section I to be welded and pipeline section to be welded II is 1. carried out centering；2. placing Ar inlet baffle and connection Ar inlet hose on the inside of the groove of pipeline section I to be welded；Argon gas release baffle is placed on the inside of the groove of pipeline section II to be welded and connection argon gas diffuses hose；3. being coated from bottom to top in the bottom of pipeline section I to be welded and the groove of pipeline section to be welded II with sealing material；4. carrying out the spot welding of standard welding test piece in standard test piece storage groove；After 5. standard welds test piece spot welding, the spot-welded test piece at the groove of pipeline section I to be welded and pipeline section to be welded II, color contrast at test piece weld bond is welded by the color and standard of welding test piece at pipe welding port to be welded, show whether pipeline argon gas inside filling degree to be welded meets the conclusion of welding requirements.This method can be effectively protected weld seam inner surface not in air oxygen and other gases participation react, to guarantee weld seam inner surface quality.
Description
Technical field:
The invention belongs to the detection field of gas concentration, in particular to a kind of side for checking pipeline argon gas inside filling degree
Method, this method are suitable for the argon arc welding welding of titanium or titanium alloy pipeline, stainless steel pipes, Aluminum and aluminum alloy pipe.
Background technique:
In engineering construction, titanium or titanium alloy pipeline, stainless steel pipes, Aluminum and aluminum alloy pipe material welding before, be
Guarantee weld seam inner surface quality require to carry out pipeline inside argon filling with protect weld seam inner surface not with oxygen in air
Reaction is participated in other gases.But due to none specific method of inspection of the filling degree of pipeline argon gas inside, welding
When veteran welder then judge the argon filling degree of argon gas by rule of thumb, and the insufficient welder of experience is then unable to judge accurately out argon
Welding is not achieved if argon gas charge is very few to cause inner surface of pipeline selective oxidation or integrated oxidation in the filling degree of gas
Quality requirement, if argon gas charge excessively if can waste argon gas, especially large-diameter pipeline internal argon-filling.
Summary of the invention:
The object of the invention is that overcome above-mentioned the deficiencies in the prior art, and provide inside a kind of inspection pipeline
The method of argon gas filling degree, this method can be effectively protected weld seam inner surface not in air oxygen and other gases participate in
Reaction, to guarantee weld seam inner surface quality.
As above design, the technical scheme is that a kind of method for checking pipeline argon gas inside filling degree, feature
It is: includes the following steps:
1. the groove of pipeline section I to be welded and pipeline section to be welded II is carried out centering；
2. placing Ar inlet baffle on the inside of the groove of pipeline section I to be welded and connecting argon gas on Ar inlet baffle
Mouth hose；Argon gas release baffle is placed on the inside of the groove of pipeline section II to be welded and argon gas release is connected on argon gas export baffle
Hose；
3. being coated from bottom to top in the bottom of pipeline section I to be welded and the groove of pipeline section to be welded II with sealing material；
4. making standard test piece storage groove, standard welding test piece is put into wherein, and start to be filled with argon gas, is full of to argon gas
After entire standard test piece storage groove, start the spot welding that standard welding test piece is carried out in standard test piece storage groove；
After 5. standard welds test piece spot welding, start to treat welded tube section and carry out argon filling, after a period of time using with
Standard welds the identical welding condition of test piece, the spot-welded test piece at the groove of pipeline section I to be welded and pipeline section to be welded II；Such as
The identical surface color and the standard welding surface color of test piece of fruit welding test piece point postwelding is all silvery white or golden yellow, then says
Bright argon gas filling degree, which meets welding requirements, formally to be welded；If the surface color for welding test piece point postwelding is black
Or blue then illustrates that argon gas filling degree is unsatisfactory for requiring, then replaces another test piece identical with welding test piece specification and material
It is placed on welding test piece position, is further continued for welding it to the section time after continuing argon filling, until surface color when next test weld
For silvery white or golden yellow.
Circle is made by rubber hard plate in above-mentioned Ar inlet baffle, and diameter is less than I internal diameter of pipeline section to be welded and wherein
Ar inlet hose is inserted into heart point top aperture.
Above-mentioned welding test piece is placed at the groove of pipeline section I and pipeline section to be welded II to be welded, and length is enclosed completely whole with sealing material
A groove one week.
Above-mentioned argon gas release baffle is round by rubber hard plate, and diameter is less than II internal diameter of pipeline section to be welded and at the center point
Top aperture is inserted into argon gas and diffuses hose.
Above-mentioned standard welding test piece is identical as pipe material to be welded and caliber, with a thickness of 2~3mm.
The present invention needs the standard under interim production and a rich argon environment identical as pipe material to be welded to weld test piece, leads to
Color contrast at the color for welding test piece and standard welding test piece weld bond is crossed at pipe welding port to be welded, obtains argon inside pipeline to be welded
Whether gas filling degree meets the conclusion of welding requirements, and welder can know whether by this conclusion can start to weld.Cause
This, the present invention can be effectively protected weld seam inner surface not in air oxygen and other gases participation react, to guarantee to weld
Stitch inner surface quality.
Detailed description of the invention:
Fig. 1 is pipeline applying argon gas figure to be welded；
Fig. 2 is the side view of Fig. 1；
Fig. 3 is standard welding test piece welding schematic diagram.
In figure: 1. Ar inlet hoses I；2. Ar inlet baffle；3. pipeline section I to be welded；4. sealing material；5. welding examination
Piece；6. pipeline section II to be welded；7. argon gas diffuses baffle；8. argon gas diffuses hose；9. testing solder joint；10. standard test piece storage groove；
11. welding point；12. standard welds test piece；13. Ar inlet hose II.
Specific embodiment:
It is as shown in the figure: a method of it checking pipeline argon gas inside filling degree, includes the following steps:
1, first according to Fig. 1, by the groove of pipeline section I to be welded and pipeline section to be welded II carry out grinding process, groove centering,
Groove gap is set according to the rules.
2, certain distance places Ar inlet baffle 2 and on Ar inlet baffle 2 on the inside of the groove of pipeline section I to be welded
Connect Ar inlet hose 1；Argon gas release baffle 7 is placed on the inside of the groove of pipeline section II to be welded and in argon gas export baffle 7
Upper connection argon gas diffuses hose；
3, it is coated from bottom to top in the groove bottom of pipeline section I to be welded and pipeline section to be welded II with sealing material 4, until being coated to
At tube top 1/4；
4, standard test piece storage groove 10 according to Fig.2, is made, standard welding test piece 12 is put into wherein and starts to be filled with
Argon gas starts to carry out standard welding test piece in standard test piece storage groove 10 after argon gas is full of entire standard test piece storage groove 10
Spot welding.
5, after standard welding test piece spot welding, start to carry out argon filling to the pipeline section to be welded in Fig. 1, after a period of time
Using welding condition identical with Fig. 2 Plays standard test piece, the spot welding of argon arc welding is carried out to the welding test piece 5 in Fig. 1.
If the surface color for welding 5 postweldings of test piece identical as the quasi- welding surface color of test piece 12 is all silvery white or golden yellow,
Then illustrate that argon gas filling degree meets welding requirements and can formally be welded.If the color for welding 5 postweldings of test piece is black
Color or blue then illustrate that argon gas filling degree is unsatisfactory for requiring, then replace another examination identical with welding test piece specification and material
Piece is placed on welding 5 position of test piece, is further continued for welding it to the section time after continuing argon filling, until surface face when next test weld
Color is silvery white or golden yellow.
Circle is made by rubber hard plate in above-mentioned Ar inlet baffle, and diameter is less than than I internal diameter of pipeline section to be welded and at it
Ar inlet hose is inserted into the aperture of central point top.
Circle is made by rubber hard plate in above-mentioned Ar inlet baffle 2, and diameter is less than than I internal diameter of pipeline section to be welded and at it
Ar inlet hose 1 is inserted into the aperture of central point top.
Above-mentioned welding test piece 5 is placed at the groove of pipeline section I and pipeline section to be welded II to be welded, and length and sealing material 4 enclose completely
Entire groove one week.When inner surface of pipeline argon filling to be welded to a certain extent after test solder joint 9 in Fig. 1 position tried
Then weldering is compared with the solder joint color of standard welding test piece, judges whether argon gas filling degree reaches requirement.
Above-mentioned argon gas release baffle 7 is round by rubber hard plate, and diameter is less than II internal diameter of pipeline section to be welded and in its center
Point top aperture insertion argon gas diffuses hose 8.
Above-mentioned standard welding test piece 12 is identical as pipe material to be welded and caliber, and with a thickness of 2~3mm, point to be welded is about
At standard welding test piece 1/3~2/3.
Test principle of the invention is: titanium or titanium alloy pipeline, stainless steel pipes, Aluminum and aluminum alloy pipe are in high temperature shape
State, easily by air oxygen or other gas reactions, surface color will change.And the density of argon gas it is heavier than air and
It is inert gas, when argon gas filling degree reaches a certain level, will be enclosed in around weld bond and prevent weld seam in the condition of high temperature
It is lower to be reacted with oxygen and the participation of other gases.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (5)
1. a kind of method for checking pipeline argon gas inside filling degree, characterized by the following steps:
1. the groove of pipeline section I to be welded and pipeline section to be welded II is carried out centering；
2. placing Ar inlet baffle on the inside of the groove of pipeline section I to be welded and connection Ar inlet being soft on Ar inlet baffle
Pipe；On the inside of the groove of pipeline section II to be welded place argon gas release baffle and on argon gas export baffle connect argon gas release it is soft
Pipe；
3. being coated from bottom to top in the bottom of pipeline section I to be welded and the groove of pipeline section to be welded II with sealing material；
4. making standard test piece storage groove, standard welding test piece is put into wherein, and start to be filled with argon gas, to argon gas full of entire
After standard test piece storage groove, start the spot welding that standard welding test piece is carried out in standard test piece storage groove；
5. after standard welds test piece spot welding, starting to treat welded tube section and carrying out argon filling, use after a period of time and standard
Weld the identical welding condition of test piece, the spot-welded test piece at the groove of pipeline section I to be welded and pipeline section to be welded II；If weldering
It is all silvery white or golden yellow that it is identical, which to weld the surface color of test piece, for the surface color and standard for connecing test piece point postwelding, then illustrates argon
Gas filling degree, which meets welding requirements, formally to be welded；If the surface color for welding test piece point postwelding is black or indigo plant
Color then illustrates that argon gas filling degree is unsatisfactory for requiring, then replaces another test piece identical with welding test piece specification and material and be placed on
Test piece position is welded, is further continued for welding it to the section time after continuing argon filling, until surface color is silver when next test weld
White is golden yellow.
2. a kind of method for checking pipeline argon gas inside filling degree according to claim 1, it is characterised in that: above-mentioned argon
Circle is made by rubber hard plate in gas inlet baffle, diameter be less than I internal diameter of pipeline section to be welded and at the center point top aperture it is slotting
Enter Ar inlet hose.
3. a kind of method for checking pipeline argon gas inside filling degree according to claim 1, it is characterised in that: above-mentioned weldering
It connects test piece to be placed at the groove of pipeline section I and pipeline section to be welded II to be welded, length and sealing material enclose completely entire groove one week.
4. a kind of method for checking pipeline argon gas inside filling degree according to claim 1, it is characterised in that: above-mentioned argon
Gas diffuses baffle by rubber hard plate circle, and diameter is less than II internal diameter of pipeline section to be welded and at the center point top aperture insertion argon
Gas diffuses hose.
5. a kind of method for checking pipeline argon gas inside filling degree according to claim 1, it is characterised in that: above-mentioned mark
Quasi- welding test piece is identical as pipe material to be welded and caliber, with a thickness of 2~3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811523202.9A CN109738422A (en) | 2018-12-13 | 2018-12-13 | A method of checking pipeline argon gas inside filling degree |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811523202.9A CN109738422A (en) | 2018-12-13 | 2018-12-13 | A method of checking pipeline argon gas inside filling degree |
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| CN109738422A true CN109738422A (en) | 2019-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811523202.9A Pending CN109738422A (en) | 2018-12-13 | 2018-12-13 | A method of checking pipeline argon gas inside filling degree |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111673238A (en) * | 2020-05-12 | 2020-09-18 | 中船澄西船舶修造有限公司 | Stainless steel pipe welding back protection inflation tool |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111673238A (en) * | 2020-05-12 | 2020-09-18 | 中船澄西船舶修造有限公司 | Stainless steel pipe welding back protection inflation tool |
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Application publication date: 20190510 |