What is carbon silicon analyzer?
Carbon silicon analyzer is widely used for on-site measurement of gray iron, martensite, ductile iron, creep iron, and other raw iron in the water. It can measure carbon equivalent, carbon content, silicon content, pouring sample temperature TM, liquid phase line temperature TL, solid phase line temperature TS, etc. The carbon and silicon analyzer has anti-electromagnetic interference, dust-proof, ultra-thin and portable design, so it is very easy to operate. Non-professional personnel can perform rapid testing operations with simple training.
Carbon silicon analyzer working principle
a. Temperature profile acquisition by a microprocessor.
b. It measures and calculates the carbon and silicon composition and the iron quality by the iron crystallization method.
c. It can automatically control the important metallurgical parameters and make up for the difficulty of measuring non-metallic elements (C, Si) by "spectroscopy" through the improved value method.
d. Meet the quality control requirements of casting production.
e. Conventional analytical instruments cannot meet the time requirements of rapid analysis before the furnace.
Use of carbon silicon analyzer
Carbon silicon analyser uses
A. Site preparation
Carbon silicon analyzer
should be installed in a place with low temperature and less dust. Do not put the instrument under direct sunlight, otherwise, it will affect the instrument’s life and test accuracy.
The carrier where the instrument is installed should be stable to prevent the instrument from falling. The power supply of the instrument AC power supply must meet the technical data requirements of the instrument. The power supply used for the instrument must not be connected to a high-power power supply.
Confirm that the instrument has passed the power-on self-test, that the instrument is properly wired to the instrument stand, and that the thermal analysis stand is connected and powered on. Then you need to put the measurement sample cup on the stand, warm up the meter for more than 10 minutes, and wait for the meter to indicate the green light before testing.
B. Measurement process
a. Scoop out the molten iron from the furnace.
b. Pour the molten iron into the measuring sample cup when the temperature of the molten iron is about 1350°C to 1280°C.
c. When pouring in the iron, the number of molten sample cups should not be too full, or the iron may spill out to damage the instrument measurement plug-in and compensation wire.
d. Do not touch the meter and sample cup when testing, otherwise it will lead to a measurement failure.
e. The instrument will show a red light when the test is completed.
f. After viewing the measurement data and analyzing the measurement information results, remove the measurement sample cup in time to protect the instrument measurement connector to prevent the connector from being overheated to reduce its life.
Precautions for use of carbon silicon analyzer
a. Carbon silicon analyzer
must be cleaned of dust every day. The cleaning area is inside the furnace and the dust collector. If the dust removal paper is damaged, replace it immediately. Do not use napkins or other paper to replace the dust removal paper.
b. The gas cylinder on the analysis box and the 2 electrodes on the buret cannot touch together, otherwise, the carbon-silicon analysis instrument
program cannot run normally.
c. The rubber plug of the buret must have a slot, otherwise, the titration solution cannot be added.
d. Add silicone oil to protect the sensor, otherwise it is easy to corrode.
e. Avoid strong vibration or humidity, and turn off the main oxygen valve and instrument power at the end of the day.
f. When the instrument is tested, the operator must ensure that the temperature of the iron poured into the pouring cup is between 1280°C and 1330°C, but not more than 1370°C, otherwise the pouring cup will be burned. This maximum temperature is not the temperature of the iron in the furnace measured by the temperature measuring gun. The temperature of the iron in the furnace should be greater than this maximum temperature of 100℃ or more because the iron will cool down on the way from the furnace to the pouring cup (in the ladle).
g. The furnace should be de-slagged first when testing to ensure that the iron is clean. If the weather is colder, the spoon used to hold the iron should be pre-warmed in the furnace, otherwise, the iron will cool down too fast in the spoon.
h. After the operation is skilled, the operator can adjust the pouring sample temperature appropriately according to the carbon content of the molten iron, and the principle is that the pouring sample temperature is greater than the initial crystal temperature.
i. Byith the principle of thermal analysis technology, the test must be the original iron water. Scrap steel, back-furnace material, and scrap iron scrap should be added according to the principle of smelting by the amount. Scrap iron chips should also be screened for impurity components in iron chips. All three materials should not be added excessively, otherwise, the instrument detection data is poor or even undetectable. After spheroidization, the iron cannot be detected for carbon and silicon composition.
j. When the sample cup is mounted on the sample cup holder, check if there is any obvious falling of the black particles inside. If so, the sample cup should not be used.
k. Do not fill the sample cup too full when pouring the iron into it. It should be 0.5 cm from the top edge of the sample cup. Otherwise, the overflowing iron will damage the sample cup seat and cause a testing error.
l. After the measurement is completed, the red and hot sample cup should be removed from the sample cup holder immediately, otherwise, the conduction heat of the red and hot sample cup will gradually burn the sample cup holder.
m. To reduce the electromagnetic interference that other electrical devices may cause to the instrument, please use a separate power supply terminal block to supply power to the carbon silicon analyzer
Carbon silicon analyzer troubleshooting
What should be done when the carbon silicon analyzer fails?
A. Carbon silicon analyzer temperature and humidity
Carbon and silicon analyzers are metal mechanical instruments, so temperature and humidity are important factors affecting the performance of such instruments. They can cause corrosion of the relevant mechanical parts of the carbon and silicon analyzer, and make the metal mirror surface finish decline, and optical parts rust, resulting in errors or performance degradation of the mechanical part of the instrument and the generation of insufficient light energy, stray light, noise, and other problems. In serious cases, it will also affect the instrument service life and normal use.
Solution: Equip the appropriate constant temperature and humidity laboratory.
B. Environment of the carbon silicon analyzer
The environment in which the carbon and silicon analyzer are located is important. Airborne dust and corrosive gases can affect the flexibility of mechanical systems, and reduce the reliability of various limit switches, keys, and photocouplers. They are also one of the causes of corrosion of optical components.
Solution: Regularly clean and dustproof to protect the environment and sanitary conditions in which the carbon and silicon analyzer is located.
C. Cleaning of carbon and silicon analyzer
After a long period of use, the carbon and silicon analyzer will accumulate a certain amount of dust inside, which will affect the use of the instrument.
Solution: Periodically disassemble the carbon and silicon analyzer to carry out dust removal work inside. And lubricate the internal mechanical parts to keep the internal clean. After completing the cleaning, then test, adjust and record.
D. The detection data error of carbon silicon analyzer is large
a. Carbon and silicon elemental content beyond the detection range
Generally, the carbon content measurement range of the carbon silicon analyzer is 2.8-4.2%, with an accuracy error of ±0.04%, while the measurement range of the silicon content detection is 0.9-3.0%, with an accuracy error of ±0.1%. If this detection range is exceeded, errors will occur.
b. High detection temperature
The temperature of the furnace pre-element test should be controlled as much as possible from 1280°C to 1350°C. If the temperature is too high or too low, it may lead to errors in the test.
c. Overflow of metal solution
If the analyzer sample cup is too full of iron overflow, it may cause the metal of the test element to spill out and affect the test results.
d. Power pollution
If the analyzer is too close to electric equipment such as an electric furnace, welding machine and traveling car, all may cause pollution to the power supply of the instrument. It is better to set a separate ground resistance of less than 3Ω to the analyzer ground to avoid inaccurate data detection and measurement accuracy.
e. Instrument idle for a long time
The pre-furnace carbon and silicon analyzer should generally be on for more than 16 consecutive hours once a week. If the instrument is left idle for a long time, it will lead to deviations.
How to buy carbon silicon analyzer?
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