All-round precision material element analyzer

All-round precision material element analyzer

Photoelectric colorimetric element analyzer was developed in China in the 1960s to meet the needs of online on-line detection and analysis of five major elements (carbon, sulfur, silicon, manganese, and phosphorus) of iron and steel metallurgy. At the time, carbon and sulfur were detected using a carbon-sulfur analyzer, and silicon, manganese, and phosphorus were measured. An elemental analyzer (three elements at the time, three channels were fixed at predetermined wavelengths to detect silicon, manganese, and phosphorus, respectively) was used. Silicon, manganese, and phosphorus were used. The wavelength required for the detection is not large, and the accuracy is not high enough. Therefore, the three-element analyzer satisfies the need for online on-line analysis of elemental content in the iron and steel metallurgy industry. But now, all industries need to detect materials besides steel, copper alloys, aluminum alloys, and zinc alloys. The elements examined will also evolve from silicon, manganese, and phosphorus to copper, chromium, nickel, zinc, magnesium, tungsten, vanadium, and niobium. , Titanium, molybdenum, aluminum, arsenic, zirconium, boron, rare earth elements and other elements, the following defects commonly found in traditional photoelectric colorimetric elemental analyzers are increasingly manifested:

1. The measurement wavelength is preset and can not be adjusted continuously. Although some models can be replaced (by replacing filters or light emitting diodes), it is still cumbersome for the user, and the types of elements that exceed the number of channels of the instrument are encountered. Or it is especially inconvenient to test different alloy materials. Moreover, not all wavelength filters and LEDs can be purchased, making it difficult to measure certain elements. For example, the measurement of magnesium requires a 576-nm light source, and filters and LEDs with such wavelengths are not available.

2. The measurement light source is mostly a DC bulb plus a filter or a cold light emitting diode, and its wavelength accuracy is poor. The wavelength accuracy of the DC bulb plus filter method depends on the filter, and most of the filter elements used in the elemental analyzer can only achieve ±15 nm. The wavelength accuracy of light emitting diodes depends on the diodes used. Most of the errors range from 20 to 30 nm, which does not guarantee the accuracy of analysis and detection.

The application of new materials and new technologies requires the types of elemental analysis in various industries to be more demanding. Faced with the inherent defects and market pressures of traditional elemental analyzers, many manufacturers have adopted the following countermeasures:

1. Increase the number of instrument analysis channels, that is, increase the number of preset fixed wavelengths, thereby increasing the number of elements that can be detected;

2. Predetermined different fixed wavelengths for predetermined different uses, so as to form different types of elemental analyzers that detect different materials and different elements respectively.

However, all of the above methods are palliatives. Not all required wavelengths can be achieved. Secondly, the problem of low wavelength accuracy is still not solved. Therefore, it is still impossible to fundamentally solve the congenital defects of traditional elemental analyzers.

According to the above situation, the fundamental direction of solving the problem is to eliminate the congenital defects of the elemental analyzer: that is, to change the source of the fixed and fixed wavelength of the light source wavelength of the traditional element analyzer, and to develop a new light source implementation form, and determine the research and development. A new light source system with continuously adjustable light source wavelengths and high-precision wavelengths has been established, which has resulted in the establishment and development of this project.

QL-BS1000 all-round precision material element analyzer, based on the widely used photoelectric colorimeter, is the first to realize the wavelength measurement of the light source of the element analyzer product in the country. The wavelength of the light source is continuously adjustable, the wavelength accuracy is greatly improved, and the operation is convenient. The establishment of curves to modify the full-featured features, fundamentally solved the photoelectric colorimetric element analyzer wavelength can not be continuously adjustable, the accuracy is not high, thereby increasing the scope of application of the instrument and the accuracy of the analysis results, can be matched with the user The luminosity analysis methods for various elements of different materials can arbitrarily select the wavelength of the light source needed, and thus can be widely used for silicon, manganese, phosphorus, and various black and non-ferrous and non-metallic materials such as steel, copper-aluminum and its alloys. By analyzing the content of nickel, chromium, copper and other elements, a single instrument can better meet the needs of metallurgy, foundry, machinery, chemical and other industries in the furnace, finished products, incoming testing and other aspects of the multi-element analysis of various materials. need.

Nanjing Kirin Analytical Instrument Co., Ltd.

October 14, 2010