CN109374175A - A kind of method of horizontal residual stress in measurement metal bar - Google Patents
A kind of method of horizontal residual stress in measurement metal bar Download PDFInfo
- Publication number
- CN109374175A CN109374175A CN201811318686.3A CN201811318686A CN109374175A CN 109374175 A CN109374175 A CN 109374175A CN 201811318686 A CN201811318686 A CN 201811318686A CN 109374175 A CN109374175 A CN 109374175A
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- China
- Prior art keywords
- residual stress
- metal bar
- detection piece
- piece
- value
- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0047—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes measuring forces due to residual stresses
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of methods of horizontal residual stress in measurement metal bar, the metal bar of long 800mm is intercepted as detection piece from metal bar one end to be detected, using the central point of detection piece as symmetric points, a piece of foil gauge is respectively pasted in the position of distance center point two sides 100mm, 200mm, 300mm in a direction perpendicular to the axis of the detector, the length direction of foil gauge is same as the length direction of the detecting piece, initial value is measured, instrument is reset；It will test part cutting along longitudinal direction in the centre of detection piece with molybdenum filament wire cutting method, then survey residual stress final value, calculate the horizontal residual stress value that average value is metal bar.The method of the present invention is simple, and patch location and cutting position selection rationally, can quickly and accurately measure the residual stress of detection piece.
Description
Technical field
The present invention relates to detection technique fields, more particularly to a kind of side of horizontal residual stress in measurement metal bar
Method.
Background technique
Residual stress refers to component in the fabrication process, will be by effect and influence from factors such as various techniques；When
After these factors disappear, if above-mentioned effect suffered by component cannot completely disappear therewith with influence, still there is partial action
Remain in component with influence, then this remaining effect is known as residual stress or residual stress with influence.
Metal material can all generate different residual in machining and hot-working (casting, weldment, forging) during
Residue stress.The presence of residual stress has great influence, the manufacture and heat treatment process of weldment to the mechanical property of material
In it is particularly evident.The presence of residual stress, one side workpiece can reduce intensity, and workpiece is made to be deformed and crack during fabrication
Defective workmanship；On the other hand it can make the mechanics such as fatigue strength, the stress corrosion of material during Spontaneous release after fabrication again
Reduced performance.To cause using the problems in.Therefore, the detection of residual stress is for heat treatment process, surface Hardening Treatment
Technique, the effect for eliminating stress technique and scrap diagnosis etc. all have very important significance.
Summary of the invention
The present invention provides a kind of methods of horizontal residual stress in measurement metal bar, adopt the technical scheme that
A kind of method of horizontal residual stress in measurement metal bar, it is characterised in that: from metal bar one to be detected
End intercepts the metal bar of long 800mm as detection piece, using the central point of detection piece as symmetric points, perpendicular to detecting element axis
Direction on the position of distance center point two sides 100mm, 200mm, 300mm respectively paste a piece of foil gauge, the length direction of foil gauge
It is same as the length direction of the detecting piece, initial value is measured, instrument is reset；With molybdenum filament wire cutting method, in the central part of detection piece
Position will test part cutting along longitudinal direction, then survey residual stress final value, calculate the lateral remnants that average value is metal bar and answer
Force value.
The present invention has following the utility model has the advantages that method is simple, patch location and cutting position selection rationally, can quickly,
Accurately measure the residual stress of detection piece.
Specific embodiment
The following is a clear and complete description of the technical scheme in the embodiments of the invention, it is clear that described embodiment
Only a part of the embodiment of the present invention, instead of all the embodiments.
A kind of method of horizontal residual stress in measurement metal bar, intercepts from metal bar one end to be detected and grows
The metal bar of 800mm is as detection piece, using the central point of detection piece as symmetric points, in a direction perpendicular to the axis of the detector
Respectively paste a piece of foil gauge, the length direction and detection piece of foil gauge in the position of distance center point two sides 100mm, 200mm, 300mm
Length direction it is identical, measure initial value, instrument reset；With molybdenum filament wire cutting method, in the centre of detection piece, along longitudinal direction
It will test part cutting, then survey residual stress final value, calculate the horizontal residual stress value that average value is metal bar.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (1)
1. a kind of method of horizontal residual stress in measurement metal bar, it is characterised in that: from metal bar one end to be detected
The metal bar of long 800mm is intercepted as detection piece, using the central point of detection piece as symmetric points, perpendicular to detecting element axis
A piece of foil gauge is respectively pasted in the position of distance center point two sides 100mm, 200mm, 300mm on direction, the length direction of foil gauge with
The length direction of detection piece is identical, measures initial value, and instrument is reset；With molybdenum filament wire cutting method, in the centre of detection piece,
It will test part cutting along longitudinal direction, then survey residual stress final value, calculate the horizontal residual stress that average value is metal bar
Value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811318686.3A CN109374175A (en) | 2018-11-07 | 2018-11-07 | A kind of method of horizontal residual stress in measurement metal bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811318686.3A CN109374175A (en) | 2018-11-07 | 2018-11-07 | A kind of method of horizontal residual stress in measurement metal bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109374175A true CN109374175A (en) | 2019-02-22 |
Family
ID=65383816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811318686.3A Withdrawn CN109374175A (en) | 2018-11-07 | 2018-11-07 | A kind of method of horizontal residual stress in measurement metal bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109374175A (en) |
-
2018
- 2018-11-07 CN CN201811318686.3A patent/CN109374175A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190222 |