CN105983800A - Alloy intermediate-diameter pipeline weld preheating process - Google Patents
Alloy intermediate-diameter pipeline weld preheating process Download PDFInfo
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- CN105983800A CN105983800A CN201510048912.0A CN201510048912A CN105983800A CN 105983800 A CN105983800 A CN 105983800A CN 201510048912 A CN201510048912 A CN 201510048912A CN 105983800 A CN105983800 A CN 105983800A
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Abstract
The invention discloses an alloy intermediate-diameter pipeline weld preheating process. The alloy intermediate-diameter pipeline weld preheating process includes the following steps: (1), preheating with oxygen and acetylene flame; (2), during heating, ordinarily setting an oxygen gauge to 3-4MPa and an acetylene gauge to 0.05-0.1MPa, and regulating again as required; (3), ensuring temperature evenness in the heating process, measuring temperature anytime to make sure temperature is not exceeded, and heating for about 3-5 minutes; (4), when temperature rises to required preheating temperature and temperature is basically even (at least three points are measured with a temperature measuring pen, informing a welder to start welding; (5), during welding, performing casual inspection with the temperature measuring pen any time, keeping interlayer temperature not lower than the lower limit of preheating temperature and not higher than 400 DEG C. The alloy intermediate-diameter pipeline weld preheating process is reasonable in working procedures and low in manufacturing cost.
Description
Technical field
The present invention relates to a kind of alloy central diameter pipeline Preheating in Welding.
Background technology
Existing alloy central diameter pipeline Preheating in Welding exists that procedure arrangement is unreasonable, operation is various, higher to operator's skill requirement so that production cost is higher.
Summary of the invention
Because the drawbacks described above of prior art, the technical problem to be solved be to provide a kind of operation rationally, the alloy central diameter pipeline Preheating in Welding of low cost of manufacture.
For achieving the above object, the invention provides
A kind of alloy central diameter pipeline Preheating in Welding, comprises the steps:
1), preheat with oxygen, acetylene gas flame, preheating temperature:
2), heating time, typically by oxygen gauge top to 3 4MPa, by Acetylene gauge top to 0.05 0.1MPa, can adjust the most again；
3), heating process must ensure homogeneous temperature, thermometric at any time, definitely can not overtemperature；It is about 35 minutes heat time heating time；
4), when temperature is raised to the preheating temperature of requirement, and temperature substantially uniform (at least measuring 3 points with tempilstick), i.e. notify that welder starts welding；
5), during welding, inspect by random samples at any time with tempilstick, interlayer temperature should be kept to be not less than the lower limit of preheating temperature, and not higher than 400 DEG C.
The invention has the beneficial effects as follows: operation of the present invention is reasonable, low cost of manufacture.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described:
A kind of alloy central diameter pipeline Preheating in Welding, comprises the steps:
1), preheat with oxygen, acetylene gas flame, preheating temperature:
2), heating time, typically by oxygen gauge top to 3 4MPa, by Acetylene gauge top to 0.05 0.1MPa, can adjust the most again；
3), heating process must ensure homogeneous temperature, thermometric at any time, definitely can not overtemperature；It is about 35 minutes heat time heating time；
4), when temperature is raised to the preheating temperature of requirement, and temperature substantially uniform (at least measuring 3 points with tempilstick), i.e. notify that welder starts welding；
5), during welding, inspect by random samples at any time with tempilstick, interlayer temperature should be kept to be not less than the lower limit of preheating temperature, and not higher than 400 DEG C.
Claims (1)
1. an alloy central diameter pipeline Preheating in Welding, is characterized in that: comprise the steps:
1), preheat with oxygen, acetylene gas flame, preheating temperature:
2), heating time, typically by oxygen gauge top to 3 4MPa, by Acetylene gauge top to 0.05 0.1MPa, can adjust the most again；
3), heating process must ensure homogeneous temperature, thermometric at any time, definitely can not overtemperature；It is about 35 minutes heat time heating time；
4), when temperature is raised to the preheating temperature of requirement, and temperature substantially uniform (at least measuring 3 points with tempilstick), i.e. notify that welder starts welding；
5), during welding, inspect by random samples at any time with tempilstick, interlayer temperature should be kept to be not less than the lower limit of preheating temperature, and not higher than 400 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510048912.0A CN105983800A (en) | 2015-01-30 | 2015-01-30 | Alloy intermediate-diameter pipeline weld preheating process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510048912.0A CN105983800A (en) | 2015-01-30 | 2015-01-30 | Alloy intermediate-diameter pipeline weld preheating process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105983800A true CN105983800A (en) | 2016-10-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510048912.0A Pending CN105983800A (en) | 2015-01-30 | 2015-01-30 | Alloy intermediate-diameter pipeline weld preheating process |
Country Status (1)
| Country | Link |
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| CN (1) | CN105983800A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112122728A (en) * | 2020-08-20 | 2020-12-25 | 绍兴新锐大进焊接设备有限公司 | Brazing method for oxygen combustion-supporting preheating-air combustion-supporting welding |
-
2015
- 2015-01-30 CN CN201510048912.0A patent/CN105983800A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112122728A (en) * | 2020-08-20 | 2020-12-25 | 绍兴新锐大进焊接设备有限公司 | Brazing method for oxygen combustion-supporting preheating-air combustion-supporting welding |
| CN112122728B (en) * | 2020-08-20 | 2021-12-07 | 绍兴新锐大进焊接设备有限公司 | Brazing method for oxygen combustion-supporting preheating-air combustion-supporting welding |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161005 |