CN208043741U - A kind of tool for small part Magnetic testing - Google Patents
A kind of tool for small part Magnetic testing Download PDFInfo
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- CN208043741U CN208043741U CN201721484759.7U CN201721484759U CN208043741U CN 208043741 U CN208043741 U CN 208043741U CN 201721484759 U CN201721484759 U CN 201721484759U CN 208043741 U CN208043741 U CN 208043741U
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Abstract
A kind of tool for small part Magnetic testing of the utility model belongs to non-destructive testing Magnetic testing technical field.The utility model is cylindrical structure, opens up that there are one cylinder shape grooves in auxiliary tool upper edge its axial direction, is evenly distributed with through-hole along its axial direction in bottom portion of groove, the tool is made of the metal material with good conductivity of nonferromagnetic.The utility model provides the auxiliary tool of small part Magnetic testing, pass through a kind of method of Indirect magnetization, in part inserter, electric current is not directed through part, and multiple parts can be once put into, solve the problems, such as that black light effectively cap piece, clamping cannot be easy injured, part sparking burn and detection efficiency.
Description
Technical field
A kind of tool for small part Magnetic testing of the utility model belongs to non-destructive testing Magnetic testing technical field.
Background technology
The Magnitizing method of Magnetic testing has direct-electrifying method, central conductor method, offset center conductor method, coil method at present
Refer to electric current directly by part Deng, direct-electrifying method, part is made to generate Circumferential field to detect longitudinal defect；Center conductor
Method and offset center conductor method refer to being passed through to have a hole part with conductor, electric current by conductor to make part generate circumferential magnetic powder,
Detect longitudinal defect；Coil method refers to that part is put into the coil of alternating electric field is that part generates longitudinal induction magnetic field, detection
Circumferential defect.
The Magnetic testing of small part mainly uses direct-electrifying method, central conductor method, offset center conductor method and coil method
The circumferential defect and longitudinal defect of part are detected respectively.
Direct-electrifying method refers to parts fixation between two contact discs of magnaflux, by applying to contact disc
Electric current makes electric current pass through part, to detect piece surface and into the defect on surface, operation chart is shown in Fig. 1, but works as part
When size is smaller, the distance between two contact discs are smaller, and the central light beam of contact disc black light lamp when rotated cannot be effective
The entire part of covering, the area of contact disc is bigger so that operator is when it is to be easy to fall part or load to load part
Contact disc jams a finger, and contact area is small, is easy burn part when energization, and detection quality is easy to be affected and detection efficiency
It is very low.
Utility model content
The purpose of this utility model：Purpose of the utility model is to solve what is occurred in current small part Magnetic testing
Problems with：1) accessory size is small, contact disc distance it is closer, black light cannot effectively cap piece whole surface cause defect cannot
It shows；2) contact disc distance is closer, and finger is easy during parts fixation and squeezes wound；3) part and contact disc contact area be very
It is small, it is easy fever burn part when an electric current passes through it；4) part can only be detected every time, and detection efficiency is extremely low.
The utility model provides the auxiliary tool of small part Magnetic testing, by a kind of method of Indirect magnetization, part
In inserter, electric current is not directed through part, and can once be put into multiple parts, and zero cannot effectively be covered by solving black light
Part, clamping are easy the problem of injured, part sparking burn and detection efficiency.
The technical solution of the utility model：A kind of tool for small part Magnetic testing, which is characterized in that described is round
Column structure is opened up in auxiliary tool upper edge its axial direction there are one cylinder shape groove, in bottom portion of groove along cylinder axis to uniform
Through-hole is distributed with, the tool is made of the conductive metallic material of nonferromagnetic.
The outer diameter of the tool cylindrical structure selects 20mm~40mm.
The length of the tool cylindrical structure selects 300mm~400mm.
The tool is made of aluminum or copper.
The advantages of the utility model：The utility model solves the problems with occurred in current small part Magnetic testing：
1) accessory size is small, contact disc distance it is closer, black light cannot effectively cap piece whole surface cause defect that cannot show；
2) contact disc distance is closer, and finger is easy during parts fixation and squeezes wound；3) part and contact disc contact area very little, work as electric current
By when be easy fever burn part；4) part can only be detected every time, and detection efficiency is extremely low.This method also obtains GE aviations
Approval, be applied at present in the Magnetic testing of sub-contracting production part and military products part.
Description of the drawings
Fig. 1 utility model diagrams；
Specific implementation mode
A kind of tool for small part Magnetic testing, described is cylindrical structure, and in auxiliary tool upper edge, its axial direction is opened
If there are one cylinder shape grooves, in bottom portion of groove along cylinder axis to through-hole is evenly distributed with, the tool is by nonferromagnetic
Conductive metallic material is made.
The outer diameter of the tool cylindrical structure selects 20mm~40mm.
The length of the tool cylindrical structure selects 300mm~400mm.
The tool is made of aluminum or copper.
The utility model is described in more detail below in conjunction with the accompanying drawings.
1) tool design
Material selection：Electric current prevents follow current by generating high heat, selects the material to conduct electricity very well by tool
Material, with copper and aluminum material.
Shape selects：Tool itself is needed to carry multiple parts while be detected, and length can be selected according to own situation
It selects, it is contemplated that detection efficiency and operation possibility select 400mm to be advisable；Part is placed on tool, places falling for part,
Groove profile is processed into centre, and slot opens size of the rear and depth needs according to part itself.Tools selection bar is processed, diameter of rod
30mm, magnetic field is easy to calculate when cylindrical material is powered.
2) operating method
By tool clamping between magnaflux contact disc；Detected part is swung in the slot of tool successively；To quilt
It detects part and applies magnetic flaw detection ink；Energization magnetization carried out to tool, when selection of magnetizing parameters needs to measure part with Tesla meter
The magnetic field intensity on surface is shown clearly, then if magnetic field intensity reaches 30Gs~60Gs with the artificial indentation of the docile and obedient part of QQI test pieces
This tool meets military standard of China.
3) actual verification
With the part of known defect, improved method is verified, detection quality meets standard requirement, detection efficiency
Improve 5 times or more.
Embodiment
For detecting the Magnetic testing of 201117610 part of GE aviation parts, detection process is as follows：
1) by auxiliary tool clamping between magnaflux contact chip, pneumatic pinch.
2) 201117610 part by one-step are put in the slot of auxiliary tool, part is put in a direction, part and part
Between at least 5mm spacing.Once put 15.
3) magnetic flaw detection ink is applied to part, it is ensured that piece surface is soaked by magnetic flaw detection ink.
4) magnetizing current is applied to auxiliary tool according to determining magnetizing parameters, electric current is by making part by induction magnetic
Change.
5) part is evaluated successively.
6) it demagnetizes.
Pass through improved detection and direct-electrifying method detection method comparison such as the following table 1：
Method compares after 1 direct-electrifying method of table and improvement
Claims (4)
1. a kind of tool for small part Magnetic testing, which is characterized in that the tool is cylindrical structure, in the tool
Its axial direction of upper edge is opened up there are one cylinder shape groove, in bottom portion of groove along cylinder axis to being evenly distributed with through-hole, the tool
It is made of the conductive metallic material of nonferromagnetic.
2. a kind of tool for small part Magnetic testing according to claim 1, which is characterized in that the tool cylinder
The outer diameter of body structure selects 20mm~40mm.
3. a kind of tool for small part Magnetic testing according to claim 1, which is characterized in that the tool cylinder
The length of body structure selects 300mm~400mm.
4. a kind of tool for small part Magnetic testing according to claim 1, the tool are made of aluminum or copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721484759.7U CN208043741U (en) | 2017-11-08 | 2017-11-08 | A kind of tool for small part Magnetic testing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721484759.7U CN208043741U (en) | 2017-11-08 | 2017-11-08 | A kind of tool for small part Magnetic testing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208043741U true CN208043741U (en) | 2018-11-02 |
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ID=63957910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721484759.7U Active CN208043741U (en) | 2017-11-08 | 2017-11-08 | A kind of tool for small part Magnetic testing |
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| CN (1) | CN208043741U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112505137A (en) * | 2020-10-30 | 2021-03-16 | 哈尔滨飞机工业集团有限责任公司 | Magnetic particle detection method and tool for small-diameter through hole steel part |
-
2017
- 2017-11-08 CN CN201721484759.7U patent/CN208043741U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112505137A (en) * | 2020-10-30 | 2021-03-16 | 哈尔滨飞机工业集团有限责任公司 | Magnetic particle detection method and tool for small-diameter through hole steel part |
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