CN106908458A - A kind of full-automatic quality determining method of magnesium alloy die casting - Google Patents
A kind of full-automatic quality determining method of magnesium alloy die casting Download PDFInfo
- Publication number
- CN106908458A CN106908458A CN201710079175.XA CN201710079175A CN106908458A CN 106908458 A CN106908458 A CN 106908458A CN 201710079175 A CN201710079175 A CN 201710079175A CN 106908458 A CN106908458 A CN 106908458A
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- Prior art keywords
- die casting
- magnesium alloy
- alloy die
- stomata
- ray
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/10—Different kinds of radiation or particles
- G01N2223/101—Different kinds of radiation or particles electromagnetic radiation
- G01N2223/1016—X-ray
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/60—Specific applications or type of materials
- G01N2223/624—Specific applications or type of materials steel, castings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/60—Specific applications or type of materials
- G01N2223/646—Specific applications or type of materials flaws, defects
- G01N2223/6462—Specific applications or type of materials flaws, defects microdefects
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/60—Specific applications or type of materials
- G01N2223/649—Specific applications or type of materials porosity
Abstract
The invention discloses a kind of full-automatic quality determining method of magnesium alloy die casting, using automatic programming system, magnesium alloy die casting automatically moves position after being put under X-ray by manipulator, and magnesium alloy die casting diverse location is detected；And carry out the judgement of porosity and realize that high-low voltage automatically switches for the defect situation in each region and different wall region to detect；Gray value according to stomata position recognizes stomata by setting permissible value with the difference in other regions, is red by underproof area marking, and the magnesium alloy die casting for being labeled as red judges to scrap according to waste product.The full-automatic quality determining method of magnesium alloy die casting of the present invention, the porosity of magnesium alloy die casting internal porosity under X-ray is calculated by computer program, the equivalent diameter of maximum stomata, and the Qualification of magnesium alloy die casting can be judged by computer program, with detection is accurate, efficiency high the characteristics of.
Description
Technical field
The invention belongs to magnadure inside die-casting part defect detecting technique field, and in particular to a kind of magnesium alloy die casting is complete certainly
Kinoplaszm quantity measuring method.
Background technology
Due to the demand of automotive light weight technology, in automotive field, increasing steel and iron parts are substituted by magnadure die casting, but
Although die casting forming, production efficiency is high, die casting is easiest to generation internal porosity, and excessive stomata can give magnesium alloy
Die casting intensity band carrys out serious influence, and detects that the best way, for x-ray detection, is one kind of nondestructive inspection to internal porosity
Important detection method, still can be continuing with by the magnesium alloy die casting after x-ray detection.
And the judgement under X-ray for stomata is currently to perplex everybody problem, current technology both domestic and external is required for passing through
Contrast stomata limit photo, the porosity of stomata is judged using manually, and the problem so brought is everyone judgement knot
Fruit is different, and human factor influences larger to magnesium alloy die casting quality, and same person different phase is to same magnesium alloy pressure-casting
The result that part judges may be different, and artificially judge easily to omit, and less efficient.
The content of the invention
It is an object of the invention to provide a kind of full-automatic quality determining method of magnesium alloy die casting, the method passes through computer program
To calculate the porosity of magnesium alloy die casting internal porosity under X-ray, the equivalent diameter of maximum stomata, and can be by computer
The Qualification of programmed decision magnesium alloy die casting, to overcome the shortcomings of that prior art is present.
To achieve these goals, the full-automatic quality determining method of a kind of magnesium alloy die casting of the invention, its detecting step
It is as follows：
（1）, using automatic programming system, magnesium alloy die casting automatically moves position after being put under X-ray by manipulator, and magnesium is closed
Golden die casting diverse location is detected；
（2）, the imaging by magnesium alloy die casting under X-ray be divided into the rectangle of several 25 × 20mm, to be directed to each area
Defect situation in domain carries out the judgement of porosity；
（3）, system it is different to the penetration power of the wall thickness of magnesium alloy die casting different zones according to X-ray, for different wall region
Single magnesium alloy die casting realize high-low voltage automatically switch detection；
（4）, system recognized stomata according to the gray value at stomata position and the difference in other regions, and will be calculated using system
The porosity and equivalent diameter of venthole；
（5）, by maximum allowable stomata standard setting in a program, if it exceeds this permissible value, program will automatic identification,
It is red by underproof area marking, the magnesium alloy die casting for being labeled as red judges to scrap according to waste product.
The full-automatic quality determining method of magnesium alloy die casting of the present invention, magnesium alloy under X-ray is calculated by computer program
The porosity of inside die-casting part stomata, the equivalent diameter of maximum stomata, and magnesium alloy pressure can be judged by computer program
The Qualification of casting, with detection is accurate, efficiency high the characteristics of.
Brief description of the drawings
Fig. 1 is magnesium alloy die casting product picture；
Fig. 2 is magnesium alloy die casting X-ray picture；
Fig. 3 is magnesium alloy die casting X-ray picture；
Fig. 4 is the histogram that imaging of the magnesium alloy die casting under X-ray is divided into several 25 × 20mm；
Fig. 5 is different to the penetration power of the wall thickness of magnesium alloy die casting different zones according to X-ray, for the list in different wall region
Individual product realizes high-low voltage automatic switchover detection figure；
Fig. 6 is the partial enlarged drawing of Fig. 5；
Fig. 7 is different to the penetration power of the wall thickness of magnesium alloy die casting different zones according to X-ray, for the list in different wall region
Individual product realizes high-low voltage automatic switchover detection figure；
Fig. 8 is the partial enlarged drawing of Fig. 7；
Fig. 9, Figure 10 are to recognize stomata according to the gray value at stomata position and the difference in other regions, and will be counted using program
Calculate the porosity and equivalent diameter schematic diagram of stomata；
Figure 11 is the unqualified administrative division map of magnesium alloy die casting；
Figure 12 is the qualified administrative division map of magnesium alloy die casting.
Specific embodiment
A kind of full-automatic quality determining method of magnesium alloy die casting of the present invention, its detecting step is as follows：
1st, using automatic programming system, magnesium alloy die casting is put under rear X-ray using manipulator and automatically moves position, to magnesium alloy
Die casting diverse location is detected；；
2nd, the imaging by magnesium alloy die casting under X-ray is divided into the rectangle of several 25 × 20mm, to be directed to each region
Interior defect situation carries out the judgement of porosity；As shown in Figure 4；
3rd, system is different to the penetration power of the wall thickness of magnesium alloy die casting different zones according to X-ray, for different wall region
Single magnesium alloy die casting is realized that high-low voltage automatically switches and is detected；As shown in Figure 5, Figure 6, wall thickness is thicker herein, using electricity high
Pressure detection, wall thickness：13mm voltages：82KV；As shown in Figure 7, Figure 8, wall thickness is relatively thin herein, is detected using low-voltage, wall thickness：
3.5mm voltages：69KV；
4th, system recognizes stomata according to the gray value at X-ray check stomata position and the difference in other regions, and uses software
The porosity and equivalent diameter of stomata will be calculated, as shown in Figure 9, Figure 10；
5th, by maximum allowable stomata standard setting in a program, if it exceeds this permissible value, software will automatic identification, general
Underproof area marking is red, and magnesium alloy die casting judges to scrap according to waste product；The present embodiment set porosity standard as
1%, equivalent diameter is 1mm.As shown in figure 11, it is unqualified region；As shown in figure 12, it is qualified region.
A kind of full-automatic quality determining method of magnesium alloy die casting of the present invention, the method calculates X by computer program
The porosity of magnesium alloy die casting internal porosity under light, the equivalent diameter of maximum stomata, and can be sentenced by computer program
Determine the Qualification of magnesium alloy die casting；Not only accurate rate is high, and alleviates labour intensity, improves operating efficiency.
Claims (1)
1. the full-automatic quality determining method of a kind of magnesium alloy die casting, it is characterized in that detecting step is as follows：
（1）, using automatic programming system, magnesium alloy die casting automatically moves position after being put under X-ray by manipulator, and magnesium is closed
Golden die casting diverse location is detected；
（2）, the imaging by magnesium alloy die casting under X-ray be divided into the rectangle of several 25 × 20mm, to be directed to each area
Defect situation in domain carries out the judgement of porosity；
（3）, system it is different to the penetration power of the wall thickness of magnesium alloy die casting different zones according to X-ray, for different wall region
Single magnesium alloy die casting realize high-low voltage automatically switch detection；
（4）, system recognized stomata according to the gray value at stomata position and the difference in other regions, and will be calculated using system
The porosity and equivalent diameter of venthole；
（5）, by maximum allowable stomata standard setting in a program, if it exceeds this permissible value, program will automatic identification,
It is red by underproof area marking, the magnesium alloy die casting for being labeled as red judges to scrap according to waste product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710079175.XA CN106908458A (en) | 2017-02-14 | 2017-02-14 | A kind of full-automatic quality determining method of magnesium alloy die casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710079175.XA CN106908458A (en) | 2017-02-14 | 2017-02-14 | A kind of full-automatic quality determining method of magnesium alloy die casting |
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| Publication Number | Publication Date |
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| CN106908458A true CN106908458A (en) | 2017-06-30 |
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| CN201710079175.XA Pending CN106908458A (en) | 2017-02-14 | 2017-02-14 | A kind of full-automatic quality determining method of magnesium alloy die casting |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109266934A (en) * | 2018-11-13 | 2019-01-25 | 湖南工程学院 | A kind of high performance heat resistant magnesium alloy, magnesium alloy profiles and preparation method thereof |
| CN112697823A (en) * | 2020-12-07 | 2021-04-23 | 中国第一汽车股份有限公司 | Aluminum casting pore size evaluation method based on real-time imaging grade evaluation |
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| CN104515786A (en) * | 2015-01-08 | 2015-04-15 | 北京科技大学 | Method for detecting and analyzing internal defect evolution of metal casting in fatigue process |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109266934A (en) * | 2018-11-13 | 2019-01-25 | 湖南工程学院 | A kind of high performance heat resistant magnesium alloy, magnesium alloy profiles and preparation method thereof |
| CN112697823A (en) * | 2020-12-07 | 2021-04-23 | 中国第一汽车股份有限公司 | Aluminum casting pore size evaluation method based on real-time imaging grade evaluation |
| CN112697823B (en) * | 2020-12-07 | 2024-04-09 | 中国第一汽车股份有限公司 | Aluminum casting air hole size assessment method based on real-time imaging grade assessment |
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Application publication date: 20170630 |
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