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: 2012-10-10
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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  • Large-diameter metal bar surface jet flow descaling system and method

Examples

Experimental program
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Effect test

Embodiment 1

[0074] Example 1: The cold steel bar 1 is transported through a roller table to a mixed jet descaling area composed of a plurality of nozzle subunits 5, 8, 9, 10, 11, and 12. The nozzle subunits 5, 8, Each sub-unit of 9, 10, 11, 12 contains three nozzles, the nozzle models are exactly the same, and the vertical spray distance between all nozzles and the outer circumferential surface of bar 1 is 5cm, the inclination angle is 10°, and all sub-units 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 every two subunits 5, 8, 9, 10, 11, 12 are arranged along the circumferential direction of the section. The misalignment angle value is 60°. In this way, the rod model is a solid steel rod with an outer diameter of 150mm. When the rod 1 is fed forward at a horizontal speed of 5m / min and an angular speed of rotation along the axis of 5round / min, all nozzle subunits 5, 8, 9 , 10, 11, and 12 are sp...

Embodiment 2

[0075] Embodiment 2: The cold steel bar 1 is transported through a roller table to a mixed jet descaling area composed of a plurality of nozzle subunits 5, 8, 9, 10, 11, and 12. The nozzle subunits 5, 8, Each sub-unit of 9, 10, 11, 12 contains three nozzles, the nozzle models are exactly the same, and the vertical spray distance between all nozzles and the outer circumferential surface of bar 1 is 5cm, the inclination angle is 10°, and all sub-units 5, 8, 9, 10, 11, and 12 are arranged on a straight line parallel to the axis of the bar 1, and the sub-units 5, 8, 9, 10, 11, and 12 show a certain amount of misalignment along this straight line. The amount of misalignment is 5 cm. In this way, the rod model is a solid steel rod with an outer diameter of 150mm. When the rod 1 is fed forward at a horizontal speed of 5m / min and an angular speed of rotation along the axis of 5round / min, all nozzle subunits 5, 8, 9 , 10, 11, and 12 are sprayed at a pressure of 50Mpa, so that the outer...

Embodiment 3

[0076] Embodiment 3: The cold steel bar 1 is transported through a roller table to a mixed jet descaling area composed of a plurality of nozzle subunits 5, 8, 9, 10, 11, and 12. The nozzle subunits 5, 8, Each sub-unit of 9, 10, 11, 12 contains three nozzles, the nozzle models are exactly the same, and the vertical spray distance between all nozzles and the outer circumferential surface of bar 1 is 5cm, the inclination angle is 10°, and the subunit 5 , 8 is arranged on a straight line parallel to the axis of the bar 1, and the subunits 5 and 8 show a certain amount of misalignment along the straight line direction, the amount of misalignment is 5cm; in addition, the subunits 9, 10 are arranged on the bar 1 On a straight line parallel to the axis, there is a certain amount of misalignment between the subunits 5 and 8 along the straight line direction, and the amount of misalignment is 5cm; but the straight line arranged by the subunits 5 and 8 and the straight line arranged by the...

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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, in particular, the present invention relates to a cold large-diameter metal bar surface jet descaling system and method. The large-diameter metal bar surface jet descaling system and method are mainly used to achieve Continuous jet cleaning is performed on the outer surface scales of large-diameter cold large-diameter metal bars. Under the premise that the large-diameter cold large-diameter metal bars maintain a certain movement, multiple sets of different arrangements are used. The mixed jet nozzle sprays the surface of the large-diameter cold large-diameter metal bar with a mixed jet, and uses the high-speed jet for surface grinding and cleaning to realize all the scales on the outer surface of the bar. Background technique [0002] In the process of hot rolling or heat treatment, metal materials will form a dense covering composed of metal oxides on the surface, commonly know...

Claims

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Application Information

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