QL-S3000C computer infrared all-round combined multi-element analyzer is the exclusive professional production and domestic multi-element joint measurement analyzer of Nanjing Qilin Scientific Instrument Group Co., Ltd. It can quickly and accurately determine sulfur in gray cast iron. The content of copper and chromium.
Effect of multi-element analyzer on sulfur, copper and chromium in gray cast iron
QL-S3000C computer infrared all-round combined multi-element analyzer is the exclusive professional production and domestic multi-element joint measurement analyzer of Nanjing Qilin Scientific Instrument Group Co., Ltd. It can quickly and accurately determine sulfur in gray cast iron. The content of copper and chromium. This product is the crystallization of international and domestic advanced technology integration. It is a high-tech product integrating light, machine, electricity, computer and analytical technology. Many technologies are domestically leading. The performance of the whole machine can be comparable with imported products. It is a famous brand product in Jiangsu Province. It has the characteristics of wide measuring range, strong anti-interference ability, complete functions, simple operation and fast and accurate analysis results.
1. Sulfur Reduces the fluidity of molten iron and increases the tendency of hot cracking of castings. It is a harmful element in castings. Many people think that the lower the sulfur content, the better. In fact, when the sulfur content is ≤0.05%, such cast iron does not work for the common inoculant we use, because the growth is very fast, often in castings. Produce white mouth.
2. Copper and copper are the most commonly added alloying elements for the production of gray cast iron. The main reason is that copper has a low melting point (1083 ° C), easy to melt, good alloying effect, and the graphitization ability of copper is about 1/5 of that of silicon. Reducing the white-mouth tendency of cast iron, and copper can also lower the critical temperature of austenite transformation, so copper can promote the formation of pearlite, increase the content of pearlite, and at the same time refine pearlite and strengthen pearlite and ferrite Body, thus increasing the hardness and strength of cast iron. However, the higher the amount of copper, the better. The suitable amount of copper is 0.2% to 0.4%. When a large amount of copper is added, the addition of tin and chromium is harmful to the cutting performance, which promotes the matrix. A large amount of soxite structure is produced in the tissue.
3, chrome chromium alloying effect is very strong, mainly because the addition of chrome makes the molten iron white mouth tend to increase, castings are easy to shrink, resulting in waste. Therefore, the amount of chromium should be controlled. On the one hand, it is hoped that the molten iron contains a certain amount of chromium to improve the strength and hardness of the casting; on the other hand, the chromium is strictly controlled to the lower limit to prevent the casting from shrinking and the scrap rate is increased. Traditional experience suggests that when the original molten iron content exceeds 0.35%, it will have a fatal effect on the casting.
For more product information, please visit the following website
High-frequency infrared carbon and sulfur analyzer http://
Infrared carbon sulfur meter http://
Element Analyzer http://
Multi-element analyzer http://
Spark direct reading spectrometer http://
Carbon and sulfur analysis instrument http://
Nanjing Qilin Scientific Instrument Group Co., Ltd.
Testing Center
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