Контроль якості безперервнолитої заготовки з низьковуглецевої сталі для виготовлення катанки
It was stated that the breakage of processing low-carbon wire rod during wire drawing directly hinges not only on the microstructure, surface quality and the presence of defects on it, but also on the content of non-metallic inclusions. An analysis of the requirements of the relevant regulatory docu...
Збережено в:
| Дата: | 2023 |
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| Автори: | , , |
| Формат: | Стаття |
| Мова: | Українська |
| Опубліковано: |
Physico-technological Institute of Metals and Alloys
2023
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| Теми: | |
| Онлайн доступ: | https://www.metalsandcasting.com/index.php/mcu/article/view/72 |
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| Назва журналу: | Metal and Casting of Ukraine |
Репозитарії
Metal and Casting of Ukraine| Резюме: | It was stated that the breakage of processing low-carbon wire rod during wire drawing directly hinges not only on the microstructure, surface quality and the presence of defects on it, but also on the content of non-metallic inclusions. An analysis of the requirements of the relevant regulatory documents for the quality of low-carbon wire rod was carried out. It is shown that there are no regulated requirements for the cleanliness of low-carbon steel wire rod for non-metallic inclusions in the current domestic regulatory documentation, which does not allow to prevent breakage during drawing precisely because of the abundance of defects. The quality of continuous cast ingots of various sizes from low-carbon steel, the presence and nature of macrodefects, the type and morphology of non-metallic inclusions, as well as the transformation of defects in the finished wire rod have been investigated. Recommendations were given to manufacturers and consumers of low-carbon wire rod. It is advisable to recommend standardizing the level and type of non-metallic inclusions when accepting products and establishing the contamination limit with non-metallic inclusions to consumers of low-carbon wire rod for subsequent processing into wire. It is shown that the analysis of the non-metallic inclusions content in the continuous cast ingot intended for the manufacture of low-carbon wire rod is uninformative. Given this, the manufacturers of low-carbon wire rod are recommended to carry out work to improve the quality of the initial continuous cast ingot and to strengthen the requirements for the macrostructure, in particular, on the item "edge point contamination". |
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