Carbon and sulfur analyzer is mainly used for the quantitative analysis of carbon and sulfur elements in steel, iron, ore, coke and other materials. It is widely used in metallurgy, foundry, machinery manufacturing and processing, industrial and mining enterprises, product quality inspection institutes, and colleges. Institutions, research institutes. It is an ideal equipment for chemical analysts to detect carbon and sulfur.
As a senior player of the carbon and sulfur joint measurement analyzer , it should have some small fault handling methods
1.Dosage of silicon molybdenum powder and tin particles
There is no fixed standard, and the total amount is generally about 0.3g. Use a small stainless steel spoon to dig about 20% -30% of silicon molybdenum powder and tin particles.
2.Excessive damage to silicone rings and quartz tubes
Silicone ring is a consumable product. The combustion temperature of the electric arc furnace can reach 1800 degrees. Damage is a normal phenomenon. If it is excessively damaged, it is recommended to control the frequency of sample preparation. Cool down.
Quartz tubes are also consumables. Excessive damage can adjust the distance between the quartz tube and the sample, which is generally flat with the inner circle of the electric arc furnace.
3. Repeatability deviation of measurement results
The working principle of the Nordin series of instruments, the carbon element is determined according to the gas capacity method of the national standard method. The principle is to use the volume of carbon dioxide gas produced by combustion to measure the content of the product. The volume of the gas has a direct relationship with the temperature. The technicians of the company pay attention to the frequency of making samples during operation, which is about the same as the control time in front of the furnace. Weigh the samples one by one, and try to avoid weighing all the samples first and finishing them in order.
4, the sample problem
Generally, ordinary steel is 1g, raw, cast, and ductile iron is between 0.5-0.25g. The specific method for distinguishing carbon content below 3.0% can be called 0.5g, and the recommended value above 3.0 is about 0.33g. Generally, we recommend 0.33g because we are a fast analyzer and the gas extraction process is only about 8 seconds. In order to fully burn the sample, try to avoid too much sample and uneven combustion caused by it.
As for the number of samples, the error caused will not be great.
5. Sulfur meter shows slow speed and slow return to zero speed
The data displayed by the sulfur meter is controlled by the pressure sensor, which is a high-precision display. The data beating during the process of adding liquid is a normal phenomenon. As for the problem of slow return to zero, it depends on how slow the indicated slowness is. If it takes more than 15 seconds to stabilize, you can check whether the notch of the rubber stopper of the burette is blocked. If it is within 15 seconds, it is normal. It is recommended to open the rubber stopper of the burette a little bit larger. This problem can be avoided.