Heraeus online hydrogen analyzer

Heraeus online hydrogen analyzer-HYDRIS
The HYDRIS immersion probe system can measure the hydrogen content of molten steel online.
HYDRIS provides you with a method for directly measuring hydrogen on steelmaking platforms, without the need for traditional sampling methods. Due to its fast and accurate characteristics, HYDRIS represents the highest level of current hydrogen testing methods, making it possible to directly control hydrogen content during steelmaking processes.

Heraeus online hydrogen analyzerWorking principle of HYDRIS
HYDRISIt can directly measure the hydrogen content of molten steel in ladles, intermediate ladles, and steel ingot molds. Nitrogen, as a carrier gas, enters the molten steel through a probe and absorbs hydrogen from the molten steel until the hydrogen content in the carrier gas reaches equilibrium with the hydrogen content in the molten steel.

HYDRISSystem working method
Nitrogen, as a carrier gas, is pushed by a pump in the circuit, passes through the gas pipeline, and enters the molten steel through the blowing pipe on the measuring and probe, forming bubbles. After absorbing hydrogen from the molten steel, nitrogen bubbles return to the pneumatic cabinet through the breathable plug of the internal bell jar of the probe, and the carrier gas circulates continuously in the circuit multiple times. Ultimately, the hydrogen content in the molten steel is balanced with the hydrogen partial pressure in the carrier gas.
The Multi Lab HYDRIS instrument monitors the equilibrium state in the gas circuit until the rate of change in hydrogen content in the carrier gas approaches zero.

analytical techniques
The thermal conductivity meter in the pneumatic cabinet can analyze the hydrogen content in the carrier gas. According to SIEVER's law, the hydrogen content in molten steel can be calculated based on the hydrogen partial pressure.
(See image 1 below the product for details)

Meet the stringent requirements of the steelmaking process
Fast hydrogen analysis on the operating platform
HYDRISThe hydrogen test can be completed within 1 minute, and the measured data will be displayed on the instrument screen.
Accurate balance measurement
HYDRISThe measurement data and thermodynamic data of * are *. Its measurement can cover the entire range of hydrogen content in steel. The high success rate of measurement ensures that the system has high reliability.
Hydrogen fixation in ladles, intermediate ladles, and steel ingots
The hydrogen probe is designed in three types, namely ladle type, intermediate type, and steel ingot model.
*Measurement reproducibility
HYDRISAnalyze the hydrogen content in the carrier gas in direct contact with molten steel. This avoids differences caused by different personnel's different operations in the sampling, delivery, and preparation processes in traditional sampling methods.

HYDRISComposition of
1Probe
HYDRIS probes are disposable components. It is equipped with a blowing quartz tube, a breathable plug, a filtering chamber, and connecting components inside.
2. Testing Qiang and catheter
The circulation of the carrier gas needs to pass through the measuring tube, and it is required that the measuring tube has reliable airtightness. The connection between the probe and the Qiang tube should have good sealing.
3. HYDRIS Pneumatic System
The pneumatic cabinet includes valves, thermal conductivity detectors, air pumps, and circuit boards. It also includes a nitrogen supply device and a filter.
4. HYDRIS processor
Multi Lab HYDRIS can convert thermal conductivity detection signals into hydrogen content signals, and control the pneumatic system before and during measurement through multi-core connecting cables. It is easy to adjust measurement parameters using a 16 key industrial keyboard.
This instrument can store measurement data for more than 110 times and can be accessed from the display at any time.

Metallurgical applications
HYDRISIt has become an industrial standard and inspection method for major manufacturers of steel rails, thick plates, acid resistant gas pipelines, and forged steel ingots.

The impact of hydrogen on the quality of steel
Hydrogen content in steel is one of the reasons for many steel defects and steel scrap. As the hydrogen content in steel increases and the thickness of the steel plate increases, the incidence of the following defects increases:
--White spot
--Bubble
--Pinhole

The source of hydrogen
HYDRISWe provide you with the most effective means of recognizing, understanding, and eliminating sources of hydrogen absorption. Hydrogen in steel generally comes from:
--Moisture in the air
--Additives
--Refractory lining
--Slag
--Alloy material

Dehydrogenation operation
Usually, degassing is used to reduce the hydrogen content of molten steel. Accurate measurement before and after degassing can help us better understand and optimize the degassing process. The immediate determination of hydrogen at the end of degassing provides a quality control basis for steelmaking workers and can achieve the goal of improving steel quality.

Intermediate package measurement
The use of HYDRIS hydrogen measurement in the intermediate package can confirm whether the expected hydrogen content in the steel has been reached. Direct and accurate hydrogen measurement has the following advantages:
--Avoid expensive isothermal treatment.
--Confirm whether the quality of the molten steel is qualified.
--Ensure that the cast billet has the desired internal structure.
--Avoid steel leakage caused by bonding of the crystallizer.

Steel ingot measurement
HYDRIS provides steelworkers with a direct means of grading the quality of steel ingots. For all forged steel ingots, HYDRIS' control method is *.