A method for controlling the hydrogen content of molten steel in electroslag remelting
A technology of electroslag remelting and control method, which is applied in the field of electroslag remelting smelting, and can solve the problems of excessive hydrogen content in steel, quality of finished steel that cannot meet customer quality requirements, absorption, etc.
Active Publication Date: 2016-06-29
宝武特种冶金有限公司
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] After years of practice, it is found that there are the following shortcomings in the production process of electroslag remelting: (1) condensation will occur on the surface of the cold crystallizer at the initial stage of melting; (2) the process of electroslag remelting will absorb the atmosphere problems such as water vapor in the
Cause water molecules to enter the smelting process and decompose hydrogen elements into molten steel, which in turn causes the hydrogen content in the steel to exceed the standard, reflecting that the quality of the finished steel cannot meet the quality requirements of customers
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0013] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0014] see figure 1 As shown, the method for controlling the hydrogen content of molten steel in electroslag remelting smelting of the present invention is to form dry hot air after the air is dried, filtered and heated, and is passed through the pipeline through the high-speed nozzle before and during the smelting process. Continuously blow into the crystallizer to discharge the cold and wet air in the crystallizer, and form a dry hot air protection to prevent the inhalation of cold and wet air during the smelting process. After many experiments and explorations, the blown dry hot air The dew point is 2 , such as 1.8kg / cm 2 , 2kg / cm 2 or 2.2kg / cm 2 ;The flow rate is 10m 3 / h / furnace, such as 11m 3 / h / furnace, 12m 3 / h / furnace or 14m 3 / h / furnace; the heating temperature is controlled at 50-90°C, such as 60°C, 70°C or 8...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a method for controlling the hydrogen content of molten steel in electroslag remelting smelting. In the control method, the air is dried, filtered and heated to form dry hot air, and the air is continuously fed through a high-speed nozzle before and during the smelting process. It is blown into the crystallizer to discharge the cold and humid air in the crystallizer and form a dry hot air protection to prevent the inhalation of cold and humid air during the smelting process. In this way, it can effectively prevent dew condensation on the surface of the crystallizer at the initial stage of melting, and the inhalation of cold and humid air during the electroslag smelting process, causing water molecules to enter the smelting process to decompose hydrogen elements and enter the molten steel, causing the hydrogen content in the steel to exceed the standard, thus The quality and quality of the steel are guaranteed, and the economic benefits of the enterprise are improved.
Description
technical field [0001] The invention relates to electroslag remelting smelting, and more specifically relates to a method for controlling the hydrogen content of molten steel in electroslag remelting smelting. Background technique [0002] Electroslag remelting is an important smelting production method for producing high-quality alloy steel. Hydrogen is a harmful element in the finished steel, and it is necessary to minimize the entry of hydrogen into the finished steel during the electroslag remelting production process. In the electroslag remelting process, the hydrogen element enters the steel mainly through water molecules, and the hydrogen element is decomposed during the smelting process and enters the molten steel. [0003] After years of practice, it is found that there are the following shortcomings in the production process of electroslag remelting: (1) condensation will occur on the surface of the cold crystallizer at the initial stage of melting; (2) the proces...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): C22B9/18C21C5/00B22D23/10
Inventor 周强孙光华黄兴涛韦剑宏
Owner 宝武特种冶金有限公司