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Large-diameter metal bar surface jet flow descaling system and method

A technology of metal bar and descaling system, applied in the direction of metal rolling, metal rolling, metal processing equipment, etc., can solve the problems that have not been raised

Active Publication Date: 2015-04-01
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] By consulting relevant patents, it is also found that foreign countries, especially Japan, Germany and other developed countries of metallurgical technology, although they have proposed numerous continuous jets, brushing and descaling technologies such as Japan JP06108277A discloses the use of acid spray and brush rolls on the continuous cold rolling line Combined descaling process, Japanese JP55034688A discloses a combined PV rolling descaling-mixed abrasive high-pressure jet descaling method, Japanese JP57142710A, JP57068217A, Japanese JP59097711A, and TMW Corporation of Canada have disclosed a series of descaling methods since 2001 For the removal technology of steel plate surface scales US20080108281 (A1), US20080182486 (A1) and US20090227184 (A1), etc., in addition, Western European US5388602, Japanese patents JP05092231A, JP09085329A and JP2002102915 have not proposed a kind of surface scale removal for effective treatment of bars Technology

Method used

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Examples

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Effect test

Embodiment 1

[0079] Embodiment 1: The cold steel bar 1 is conveyed to a mixed jet descaling area composed of a plurality of nozzle subunits 5, 8, 9, 10, 11, 12 through a roller table, and the nozzle subunits 5, 8, Each subunit of 9, 10, 11, and 12 contains three nozzles, the nozzle models are exactly the same, and the vertical spraying distance between all nozzles and the outer circumferential surface of bar 1 is 5cm, and the inclination angle is 10°. At the same time, all subunits 5, 8, 9, 10, 11, 12 are uniformly arranged in a divergent shape along the circumferential direction of the circular section of the bar 1, and between each two subunits 5, 8, 9, 10, 11, 12 along the circumferential direction of the section The misalignment angle value is 60°. In this way, the bar model is a solid steel bar with an outer diameter of 150 mm. When the bar 1 is fed forward at a horizontal speed of 5 m / min and an axial rotational angular speed of 5 round / min, all nozzle subunits 5, 8, and 9 , 10, 11,...

Embodiment 2

[0080] Embodiment 2: The cold steel bar 1 is conveyed to a mixed jet descaling area composed of a plurality of nozzle subunits 5, 8, 9, 10, 11, 12, the nozzle subunits 5, 8, Each subunit of 9, 10, 11, and 12 contains three nozzles, the nozzle models are exactly the same, and the vertical spraying distance between all nozzles and the outer circumferential surface of bar 1 is 5cm, and the inclination angle is 10°. At the same time, all subunits 5, 8, 9, 10, 11, 12 are arranged on a straight line parallel to the axis of bar 1, and each subunit 5, 8, 9, 10, 11, 12 presents a certain amount of misalignment along the direction of the straight line, The amount of misalignment is 5cm. In this way, the bar model is a solid steel bar with an outer diameter of 150 mm. When the bar 1 is fed forward at a horizontal speed of 5 m / min and an axial rotational angular speed of 5 round / min, all nozzle subunits 5, 8, and 9 , 10, 11, and 12 are all sprayed at a pressure of 50Mpa, so that the one-...

Embodiment 3

[0081]Embodiment 3: The cold steel bar 1 is conveyed to a mixed jet descaling area composed of a plurality of nozzle subunits 5, 8, 9, 10, 11, 12 arranged by a roller table, and the nozzle subunits 5, 8, Each subunit of 9, 10, 11, and 12 contains three nozzles, the nozzle models are exactly the same, and the vertical spraying distance between all nozzles and the outer circumferential surface of bar 1 is 5cm, and the inclination angle is 10°. At the same time, subunit 5 , 8 are arranged on a straight line parallel to the axis of the bar 1, and there is a certain amount of misalignment between the subunits 5, 8 along the direction of the line, and the amount of misalignment is 5 cm; On a straight line parallel to the axis, there is a certain amount of misalignment between the subunits 5 and 8 along the direction of the line, and the amount of misalignment is 5 cm; 1 Axial arrangement with different angles in the direction of the outer circumference, and the angle between two str...

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Abstract

The invention relates to a large-diameter metal bar surface jet flow descaling system and method; the large-diameter metal bar surface jet flow descaling system comprises at least one nozzle unit used for spraying mixed jet flow, and an actuating mechanism used for realizing helical motion of a large-diameter metal bar; and the large-diameter metal bar can performs rotary motion around the self axis while performing axial movement. The invention has the advantages that cold state surface descaling of the large-diameter metal bar is realized in a way of mixed jet flow; compared with the traditional descaling technology, the method provided by the invention the advantages that a more environmentally-friendly descaling technology is adopted, the production cost is low and stronger competitive advantages are achieved; due to the special arrangement way of nozzles and the special composite motion law of the bar, high-efficiency bar descaling can be realized in the state of fewer nozzles.

Description

technical field [0001] The present invention relates to the technical field of metal surface cleaning. Specifically, the present invention relates to a system and method for jet descaling the surface of a cold large-diameter metal bar. The system and method for jet descaling the surface of a large-diameter metal bar are mainly used to realize Continuous jet cleaning of the outer surface scales of large-diameter cold large-diameter metal rods, using multiple sets of different arrangement methods on the premise that the large-diameter cold large-diameter metal rods maintain a certain movement The mixed jet nozzle sprays the mixed jet on the surface of the large-diameter cold large-diameter metal bar, and uses the high-speed jet to grind and clean the surface to remove all the scales on the outer surface of the bar. Background technique [0002] During the hot rolling or heat treatment process of metal materials, a dense covering composed of metal oxides will be formed on the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B45/08
Inventor 段明南沈建国
Owner BAOSHAN IRON & STEEL CO LTD
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