The oxygen in molten steel plays a decisive part in the quality of steel, the percentage of useful steel and the consumption of iron alloy. With the constant expansion of making boiling steel, semi-killed steel and Al-deoxidization continuous casting steel as well as the wide application of molten steel refining technical. We are eager to know the oxygen content of molten steel through a fast, accurate and direct test so as to control the steelmaking operation and improve the quality and reduce the consumption. It is to meet such a need that using a solid electrolyte concentration technique has developed the oxygen-content test technology.

　　We have digested and absorbed the advanced technology transferred from Yamari Electronic Co. LTD and then successfully developed the oxygen-content probes, which can reach the advanced world level.

Measured process

Reference material

Measuring range

Accurate degree

Successful test rate

Response time

Inside furnace

Mo/MoO₂

Cr/Cr₂O₃

100～1200PPm

10%

Oxygen＞90%

temperature ＞98%

＜8s

Inside ladle

Cr/Cr₂O₃

1～100PPm

When＞10PPm Error 10%

When＜10PPm Error 1PPm

Metric length (L)

OD (D1)

ID (D2)

1600、1200

φ30、φ42

φ18、φ28.4

Note: The length on request.

Strictly check the probe, test lance and instrument system to make sure that they are in good condition.

Install the oxygen–content probe onto the test lance. The measurement can be made only when the pointer of the meter (or a digital meter) returns to the zero point, which indicates electric conduction is in order.

During the measurement, the immersion period of the probe in the molten steel should not exceed 10 seconds; or the test lance will be burnt out.

The products should be handled with care when they are loaded and unloaded. It is strictly forbidden to load them upright. They should be kept from moisture during the transport and stored in a warehouse with relative humidity not exceeding 80% and good ventilation. The surrounding air should not contain harmful gases and foreign matter, which would corrode the products. It is good practice to pile up the products crisscross. The height of each pile should no be more than 6 levels.