FR2080411A5 - Monitoring pipe wall thickness - using radiation situated beyond and to the mandrel - Google Patents
Monitoring pipe wall thickness - using radiation situated beyond and to the mandrelInfo
- Publication number
- FR2080411A5 FR2080411A5 FR7100784A FR7100784A FR2080411A5 FR 2080411 A5 FR2080411 A5 FR 2080411A5 FR 7100784 A FR7100784 A FR 7100784A FR 7100784 A FR7100784 A FR 7100784A FR 2080411 A5 FR2080411 A5 FR 2080411A5
- Authority
- FR
- France
- Prior art keywords
- mandrel
- wall thickness
- pipe wall
- monitoring pipe
- situated beyond
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B15/00—Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons
- G01B15/04—Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons for measuring contours or curvatures
- G01B15/045—Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons for measuring contours or curvatures by measuring absorption
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
A radioactive source is mounted on the axis of a hollow mandrel in the die of a pipe extruder. Three or more radiation detectors mounted at regular intervals around the outside of the extrudate are level with the radioactive source. Lack of balance between the emission capture signals is used to indicate or control any eccentricity in the section during extrusion of plastic or of seamless metal tubing.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2009003 | 1970-02-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2080411A5 true FR2080411A5 (en) | 1971-11-12 |
Family
ID=5763441
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7100784A Expired FR2080411A5 (en) | 1970-02-26 | 1971-01-12 | Monitoring pipe wall thickness - using radiation situated beyond and to the mandrel |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2080411A5 (en) |
-
1971
- 1971-01-12 FR FR7100784A patent/FR2080411A5/en not_active Expired
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |