比磁饱和强度分析仪独特的磁体比饱和磁化强度自动检测
实现350mm硬质合金棒材无损分段检测
型号：SJ-SM-2000RB
韩国锡珍工业公司中国办事处
广州市天河区长兴路长湴新村东二街18号201室
Tel : 189******** E-mail：angelbiner@https://www.doczj.com/doc/278470143.html,
SJ-SM-2000RB产品性能描述
General
SJ-SM-2000RB is new and specially designed for the measurement of 4πσ of tungsten carbide rod completely without any breaking or cutting of it.
As we know, the existing 4πσ measurement system has been used generally for the quality control of complete rod so far by measuring small sample taken out of it.
Or prepare some small samples separately with same materials and alloy them under same sintering condition in furnace and measure 4πσ for the quality assurance.
And this result has been referred to be judged for its quality whether it is good.
Even we have used this existing method though, we already know that this is not a practical method for the complete rod.
SJ-SM-2000RB will provide a practical solution. It scans complete rod with the magnet from one end to the other end entirely and display the curve which is the profile of 4πσ
for the total length.
Then you will see the variation of 4πσ of the complete rod both in curve and data. Description
SJ-SM-2000RB is designed as an automatic measurement system from sample
alignment on the bed, sample loading into the magnet to sample out.
Systems for the sample delivery to the bed for its alignment and sorting out depends on the measuring result are separately designed as an option that should be equipped and installed for 100 % inspection on the production line. But this part could be designed by yourself.
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SJ-SM-2000RB is belt driving(lower and upper) system driven by motor basically and pneumatic systems are also used for sample alignment, holding, tension and etc.
Weight entry of the sample can be set either by automatically through the electronic balance connected with the computer or manually by typing the weight using numerical key. Sample length over 110 mm long will be automatically measured after measurement
by the special software.
And parts of sample length where are the around the both ends of rod, when these parts get into and out of the magnet during measurement, the curve has slope until the sample length(includes effective length and ineffective length) is fully balanced in magnetically even if the sample is quite good. Software modify theses areas and generates 4πσ curve.
C
A: Sample is getting into the magnet
B: Sample is is fully balanced in magnetically
C: Sample is getting out of the magnet
-Figure 1-
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Basically, 4πσ measurement of complete long rod is different from existing or general 4πσ
measurement that we have being used so far.
1) In the existing or general 4πσ measurement system as like SJ-SM-2000A, sample is
located at around the center of the magnet where is the most uniformed area in magnetic strength.
In this case, sample is smaller enough than the diameter of magnet in length. So, we can detect only the maximum 4πσ value of the sample. It shouldn’t be scanned
structurally.
At this point, we can assume the following things.
- The magnetic strength where the sample is located is quite uniformed.
- The sample is located within the magnet(almost centered)
Therefore, the output to calculate 4πσ of the sample in this condition is all effective and absolute.
This is a basic and general theory of the existing or general 4πσ measurement system.
Sense coil
Magnet
Sample
-Figure 2-
2) In complete long rod measurement system SJ-SM-2000RB, the rod is passing
through the magnet which means that the rod is scanned by the magnet to draw the 4πσ curve of rod(sample).
Accordingly, the measuring conditions are quite different from the existing or general 4πσ measurement system.
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They are ;
1) Sample is passing through from end to the other end of the magnet.
2) The strength of magnet is not all uniformed in radial direction.
Center is the most stronger and getting weaker spreading out from the center.
3) So, 4πσ value for the part of sample which is moving in the magnet is being varied
based on the location of sample in the magnet.
4) 4πσ value is influenced by not only the sample moving in the magnet but also out of
magnet in some distance. We call that the sample length moving within the magnet is “effective length” and sample length affects to the 4πσ value at out of magnet is “ ineffective length”.
Effective sample length which is in the magnet
that we exactly want
Ineffective sample length which is out of magnet
but being influenced in magnetically.
Sense coil
Magnet
-Figure 3-
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Therefore, If the sample is not filled with in the magnet in magnetically (not physically),
4πσ value is being varied up or down until sample is fully balanced in magnetically. Once it is filled with the sample in magnet and balanced in magnetically, 4πσ value becomes plain and stable. Then we can see the shape of 4πσ in curve displayed.
Following curves are shown to describe how 4πσ curve of complete rod can be generated.
A B C D E F
-Figure 4-
Sample is passing through the magnet from A to F
Total sample length is from B to E
1) Sample location A
Differential curve : This is the point where the sample is just entered into the
magnet.
Magnetic flux curve : As same as above.
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2) Sample location B
Differential curve : This is the point of the most strong magnetic strength in the
magnet and balancing point in magnetically between point A-C.
Also, we can see the direction change from this point.
Magnetic flux curve : This is 1/2 point in slope but still moving upward. Because,
it is integrated curve. We can’t see any direction change in
this curve.
3) Sample location A-C
Differential curve : This curve shows that the variation against sample moving into
the magnet until it is balanced in magnetically.
A-B is increasing and B-C is decreasing in positive side.
And it is balanced finally.
Magnetic flux curve : This curve shows that slope is moving upward from zero to
sample is balanced in magnetically.
But, we can’t see any direction change in this curve.
4) Sample location C-D
Differential curve : Sample is fully saturated and balanced in the magnet. Therefore,
there is no differential variation. So, the curve is plain and flat
(zero). If sample is good, this curve should be uniformed.
But, sample is bad, curve will be deformed at where something
wrong is.
Magnetic flux curve : Sample is fully saturated and balanced in the magnet.
Therefore, certain level of magnetic flux will be maintained
unless sample is bad. But, if sample is bad, curve will be
deformed at where something wrong is.
5) Sample location D-F
Differential curve : This curve shows that the variation against sample moving out of
the magnet from being balanced in magnetically to fully get out
of it. D-E is increasing and E-F is decreasing in negative side.
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And it will be flat(Zero) which means that sample is out of
magnet.
Magnetic flux curve : This curve shows that slope is moving downward from
saturated and balanced level to zero.
But, we can’t see any direction change in this curve.
The curve figure5 below is the 4πσ curve of complete rod what we exactly want to see. This is derived from the curves described in figure 4 above.
The height or level of this curve will be converted into 4πσ value
A C D F
-Figure 5-
1) Segment C-D,
This area shows that the sample is moving with fully saturated and balanced in the magnetically. So, the curve is quite plain and flat.
2) Segment A-C and D-F, Let say it is “wings”
As described as above 3) and 5) in figure 4, curve has to be varied with slope until sample is saturated and balanced. It is not able to make them to 4πσ curve as like segment C-D.
Therefore, the software modify and reproduce these wings to see entire 4πσ curve of the sample(rod).
-7-
Following figure 6 is shown how this software is working by comparing two(2) curves to
make sure whether the software is working logically and theoretically.
One curve is for complete rod measured by SJ-SM-2000RB. And take out the data
every 24.12 mm in series.
Other curve is drawn by 4πσ data measured by SJ-SM-2000A that is being widely and generally used for 4πσ measurement at the moment. Sample is cut every 23 mm long in series.
As it is shown below, the shape and data of two(2) curves are in same region which means that the result (data) of SJ-SM-2000RB is surely proved as an equipment to measure the complete rod without any breaking or cutting of it.
-Figure 6-
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Following figures 7,8 and 9 are shown the views operation program.
Figure 7 is view od Normal operation
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Figure 10 is view of SJ-SM-2000RB
Figure 11 is view of SJ-SM-2000RB
Feature
- Fully computer controlled system.
- Sample loaded by belt driven by motor.
- Sample alignment or holding performed by pneumatic controlled by micro processor. - Automatic measuring range change.
- Automatic drift control
- Weight entry can be done by either automatically from electronic balance through RS232 or manually input using numerical key.
- Automatic entry of sample length by the software.
- Display the ratio of measured value in percentage to the theoretical value.
- Display Max. and Min. 4πσ value.
- Display Max. and Min. 4πσ value for every 24 mm in series
- Display 4πσ curve and can be zoomed for analysis.
Specification
Electrical
- Input power : 220 Vac, Single phase and 50-60Hz
- Power consumption : Max. 1 KAV
- Belt driving motor : Geared servo motor 200 W
Pneumatic
- Input pressure : ＞6 Bar
- Distributed to sample arranging, holding and clamping cylinder.
Air pressure for each cylinder is depended on it’s working condition.
Mechanical
- Dimension : 600W x 1435L x 1400H
- Weight : About 200 Kg
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Performance
? Measurement cycle time : 10-12 sec.
? Sample dimension :
- Diameter : 2.0-23mm
- Length :
For rod : 110-350mm
For reference : 23mm only
? Auto drift control
? Auto measurement range selection
? Contamination care :
- Belt scanning function to check contamination
- Auto finding location where belt contaminated.
? Sensors for sample alignment and location: Sensick WLL190T-2. ? Zoom-In function
? Display
- 4πσ curve
- Max. and Min. 4πσ value.
- Max. and Min. 4πσ value for every 24 mm in series.
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Saturation Magnetization(4πσ) Measurement System
for
Complete Cemented Carbide Rod
SJ-SM-2000RB
韩国锡珍工业公司中国办事处
广州市天河区长兴路长湴新村东二街18号201室
Tel : 189******** E-mail：angelbiner@https://www.doczj.com/doc/278470143.html,