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After uniform cooling device and method for wire spinning steel wire rod

A technology of uniform cooling and spinneret, which is applied in workpiece cooling devices, workpiece surface treatment equipment, metal rolling, etc., can solve the problem of temperature unevenness, and achieve the effects of device simplification, convenient operation and maintenance, and uniform and stable product performance

Active Publication Date: 2020-09-29
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned defects existing in the prior art, the purpose of the present invention is to provide a uniform cooling device and cooling method for wire rods after spinning wire rods, so as to solve the temperature unevenness in the wire rod cooling process, especially the excessive temperature at the overlapping points. High problems, thereby improving the performance uniformity of wire products

Method used

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  • After uniform cooling device and method for wire spinning steel wire rod
  • After uniform cooling device and method for wire spinning steel wire rod
  • After uniform cooling device and method for wire spinning steel wire rod

Examples

Experimental program
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Effect test

Embodiment 1

[0047] Example 1: For a hard wire rod with a diameter of φ5.5mm, the spinning temperature is 880°C, only the tuyere is used, and the water mist nozzle 8 is not used, and the measured temperature difference in the same circle is 55°C.

Embodiment 2

[0048] Example 2: Cold heading steel wire rod with a diameter of φ8mm, spinning temperature 840°C, slow cooling without turning on the fan, using 12 sets of water mist nozzles 8, and installing 1 water mist nozzle at the position 14 of the air nozzle air inlet on the upper side of each cooling device 8. The flow density of water mist nozzle 8 is 17l / m 2 min, the measured temperature difference in the same ring is 70°C.

Embodiment 3

[0049] Example 3: For a hard wire rod with a diameter of φ14mm, the spinning temperature is 860°C, and 8 sets of water mist nozzles 8 are used. Two water mist nozzles 8 and 8 water mist nozzles are installed at the air inlet 14 of the air nozzle on the upper side of each cooling device. The spacing is 80mm, and the flow density of water mist nozzle 8 is 10l / m 2 min, the measured temperature difference in the same ring is 50°C.

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Abstract

The invention discloses an after uniform cooling device and method for a wire spinning steel wire rod. The after uniform cooling device is arranged below the wire spinning steel wire rod and located on a Stelmor cooling line and comprises an air nozzle and water mist nozzles located at the air inlet position of the air nozzle. A gradual closing structure is arranged from an air inlet to an air outlet of the air nozzle, and in other words, the width of the air inlet is larger than that of the air outlet. A middle air nozzle and edge air nozzles arranged on the two sides of the middle air nozzlecorrespondingly are included, and the middle air nozzle and the edge air nozzles are isolated through inclined partition plates. The width of air outlets of the edge air nozzles is larger than the width of an air outlet of the middle air nozzle. The width of air inlets of the edge air nozzles is larger than the width of an air inlet of the middle air nozzle. The length of the air outlet of the middle air nozzle is smaller than the diameter of the wire spinning steel wire rod. The multiple water mist nozzles are arranged and symmetrically arranged at the positions of the air inlets of the edgeair nozzles. The after uniform cooling device and method solve the problems that the temperature in the wire cooling process is uneven, and particularly the temperature at the lap-joint point position is too high, and accordingly performance uniformity of wire products is improved.

Description

technical field [0001] The present invention relates to the technical field of post-rolling cooling of wire rods, more specifically, to a uniform cooling device and cooling method for wire rods after spinning and coiling, especially for wire rod production lines using but not limited to Stelmore cooling lines Controlled cooling after spinning. Background technique [0002] There are many control cooling methods for the wire rod production line, the most widely used is the Stelmore cooling line, the cooling process is as follows: the protruding coils of the laying machine are laid flat on the roller table, and there are groups of fans under the roller table, and the cold air blown by the fan passes through The air channel enters the air nozzle under the roller table, and the cold air from the outlet of the air nozzle blows to the coil on the roller table to cool the coil. [0003] However, the disadvantage of the Stelmore cooling line is that it is easy to cause the overlapp...

Claims

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Application Information

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IPC IPC(8): B21B45/02
CPCB21B45/0224B21B2045/0212
Inventor 张庆峰金峰
Owner BAOSHAN IRON & STEEL CO LTD
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