This technology is a combination of continuous casting intermediate ladle sizing spout quick-change technology, plug rod flow control technology and gas protection technology, which realises gas sealing protection between upper spout and lower spout, lower spout and immersion spout during casting of high-quality and alloy steels, isolating the contact between air and molten steel. Plug rod type sizing spout fast change casting technology and gas protection technology, in the variety of steel and high quality steel continuous casting production, to achieve not only can achieve the continuous casting machine pulling speed stability, long life in the package, energy saving and emission reduction, but also to ensure that the steel in the continuous casting process does not oxidise, to meet the varieties of steel and high quality steel continuous casting production of technical quality requirements.

Quick-change casting technology of inert gas-protected plug bar plus sizing spout for pure steel

(Patent No. ZL 2011 2 0087067.5)

Technology Brief:

This technology is a combination of continuous casting intermediate ladle sizing spout quick-change technology, plug rod flow control technology and gas protection technology, which realises gas sealing protection between upper spout and lower spout, lower spout and immersion spout during casting of high-quality and alloy steels, isolating the contact between air and molten steel. Plug rod type sizing spout fast change casting technology and gas protection technology, in the variety of steel and high quality steel continuous casting production, to achieve not only can achieve the continuous casting machine pulling speed stability, long life in the package, energy saving and emission reduction, but also to ensure that the steel in the continuous casting process does not oxidise, to meet the varieties of steel and high quality steel continuous casting production of technical quality requirements.

At present, high-quality steel, special steel continuous casting production casting technology, commonly used in my company's research and development, with independent intellectual property rights of the plug rod type sizing spout quick-change casting device. This device after long-term use has proved to have many advantages, especially in the production process of high-quality steel billet casting to extend the life of the intermediate package, improve the molten steel yield, improve production efficiency, reduce the consumption of refractory materials, reduce labour intensity, energy saving and emission reduction, and so on is more prominent. However, in recent years, with the development of national economic construction, the steel variety structure is constantly optimised, the market demand for high-quality steel and varieties of steel has increased dramatically, and the requirements for the quality of steel are also higher and higher. Due to the traditional plug rod type long water mouth quality steel continuous casting production process, the short life of the middle package, low production efficiency, large consumption of resistant material and other shortcomings, seriously impede the quality of steel and varieties of steel production and development needs, and the use of the existing plug rod type calibrated water mouth quick-change casting technology to produce high quality steel and varieties of steel, due to the air is easy to through the upper mouth and the lower mouth of the mouth of the mouth of the mouth of the mouth of the mouth of the mouth of the mouth of the mouth of the mouth of the mouth of the mouth of the mouth of the mouth of the mouth of the mouth of the mouth of the mouth of the mouth of the mouth of the mouth of the mouth of the mouth of the mouth of the water into the steel water, increased Oxygen content in the steel water, affecting the quality of the billet, so the original quick-change technology is difficult to meet the requirements of continuous casting of varieties of steel and high-quality steel production. For this reason, the market development needs and promote the progress of continuous casting technology, research and development of the "pure steel with inert gas protection plug bar plus sizing water outlet quick-change device" technology, and by the Shandong Provincial Science and Technology Commission as a scientific and technological development programme items

目，获得省财政补贴20万元整。