Production method of steel for 82 B steel stranded wires

A production method and technology for steel strands, applied in the direction of manufacturing converters, etc., can solve the problems of complex production process, unstable effect of quality improvement, and difficulty in achieving high cleanliness.

A production method and technology for steel strands, applied in the direction of manufacturing converters, etc., can solve the problems of complex production process, unstable effect of quality improvement, and difficulty in achieving high cleanliness.

CN102211159BActive Publication Date: 2013-02-27PANZHIHUA IRON AND STEEL +2
0 Cites 6 Cited by

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Production method of steel for 82 B steel stranded wires
  • Production method of steel for 82 B steel stranded wires
  • Production method of steel for 82 B steel stranded wires

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The invention adopts the process route of "converter primary refining-LF refining-RH refining-bloom continuous casting" to produce clean steel strand steel 82B steel, wherein, in the bloom continuous casting process, the end of the solidified end adopts dynamic light pressing. The soft reduction technology is a technology that slightly compresses the slab at a certain stage of the continuous casting process; the dynamic soft reduction technology (DSR) is to dynamically track the slab according to the solidification of the slab during the continuous casting production process. The solidification range specified on the billet, and the soft reduction parameter command is issued in real time. DSR can adjust the soft reduction parameters in time according to the liquid core position of the slab during the continuous casting transition process, so as to better achieve the effect of soft reduction.

[0021] Among them, in the above-mentioned bloom continuous casting process, t...

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

PropertyMeasurementUnit
melting pointaaaaaaaaaa
Login to View More

Abstract

The invention discloses a production method of steel for 82 B steel stranded wires, belonging to the field of metallurgy. In the production method, the steel for the 82 B steel stranded wires is produced by adopting the process flow comprising the following steps of: rotating furnace primary smelting, LF (Low Frequency) refining, RH (Relative Humidity) refining and continuous casting and pouring of a large square billet, wherein the tail end of a solidification end is dynamically and lightly downwards pressed in the procedure of the continuous casting and pouring of the large square billet. According to the production method disclosed by the invention, technologies, i.e. rotating furnace whole-course bottom argon blowing, argon blowing after tapping, RH vacuum degassing, impurity removal,crystallizer electromagnetic stirring, and the like, are adopted in the process flow, and therefore the clean production of the steel for the 82 B steel stranded wires is realized; an antegrade production organization is achieved; obtained components and the quality of casting blanks all meet the requirements for steel grades, and the total oxygen content (T[O]) in the steel is less than 0.0020 percent; and wire breakage does not appear in the wire drawing process of a product, and therefore the wire broken rate of the wire drawing process is reduced.

Description

technical field [0001] The invention relates to a production method of high-carbon hard wire steel, which belongs to the metallurgical industry. Background technique [0002] 82B steel is mainly used to manufacture high-strength and low-relaxation prestressed steel wire and steel strands and other products. In order to ensure continuous or less breakage during the wire drawing process, there are strict requirements on steel segregation and non-metallic inclusions. At present, the 82B steel produced in China has problems such as large segregation and many non-metallic inclusions, which lead to a high rate of wire breakage in the wire drawing process. When producing steel strands with high quality requirements, only a few manufacturers can provide qualified products. Therefore, improving the cleanliness of steel, controlling slab segregation, and solving the problems existing in the production of steel strand steel can effectively reduce the broken wire rate in the wire drawi...

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
27 Feb 2013
Publication
CN102211159B
IPC
B22D11/16; B22D11/18; B22D11/115; C21C5/30; C21C7/10; C21C7/072
Inventors
曾建华; 张敏