Jet de-scaling system and method for surfaces of metal bars and wires

A descaling system and a technology for metal bars, which are applied in the technical field of metal surface cleaning according to the present invention, can solve the problems of slow descaling speed, poor working environment of process production workshops, inconsistent descaling effects, etc. The effect of green descaling process and high descaling capacity

Inactive Publication Date: 2013-12-04
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] 1) Because the jet is directly descaling with the metal plate surface, the shaking of the plate surface and the uneven scale structure will directly cause the inconsistency of the descaling effect of the jet on the plate surface;
[0010] 2) The speed of descaling is slow and cannot achieve revolutionary improvement;
[0013] The chemical wet pickling process in these methods has a harsh production environment, and a large amount of residual acid produced due to production must be recycled and regenerated. At present, the regeneration process will inevitably produce corresponding waste gas emissions, and the waste gas discharged contains a large amount of Acidic and corrosive components, such as HCL, SO2, etc., directly pollute the atmosphere
[0014] However, if shot blasting or shot blasting is used for descaling, not only the surface cannot be completely cleaned, but also a large amount of dust pollution will be brought, resulting in a very bad working environment in the process production workshop, and the effect is not good, and it cannot be achieved. Surface quality required by subsequent processes

Method used

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  • Jet de-scaling system and method for surfaces of metal bars and wires
  • Jet de-scaling system and method for surfaces of metal bars and wires
  • Jet de-scaling system and method for surfaces of metal bars and wires

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Embodiment 1: The cold steel wire rod 111 is conveyed to the entrance of the subunit A1 arranged with three mixing nozzles 32 through the roller table 2, and the three nozzles 32 in the subunit A1 are centered around the central axis of the wire rod 111 Divergent, centrally symmetrical arrangement. The included angles of the three nozzles 32 are 120° (see Figure 2). After passing through the A1 subunit, the scales of the three arcs on the section of the wire 111 have been removed, and the remaining three arcs have not been removed. In this way, when the wire 111 enters the second sub-unit A2 from the support roller table 2, the nozzles 32 of the sub-unit A2 are also circumferentially arranged at an angle of 120°, but the overall arrangement form is exactly 60° misaligned with the overall arrangement form of A1, That is to say, the compensation on the circumference is realized, and the unscaled three-section arc surface of the wire 111 is guaranteed to be descaled just a...

Embodiment 2

[0063] Embodiment 2: Referring to Figure 3, the difference between this embodiment and the above embodiment is that the descaling unit B in this embodiment is composed of three subunits B1, B2, B3, and each subunit B1, B2, B3 The arrangement of nozzles inside is also 120°circumferentially dispersed, but the difference in the arrangement of the three sub-units B1, B2, and B3 is that the misalignment angle between them is 40°.

Embodiment 3

[0064] Embodiment 3: Referring to Figure 4, the difference between this embodiment and the above embodiments is that the descaling unit C in this embodiment is composed of four subunits C1, C2, C3 and C4, and each subunit C1, C2 The arrangement of the nozzles in , C3 and C4 is also a 120° circumferential divergent arrangement, but the difference in the arrangement of the four subunits C1, C2, C3 and C4 is that the misalignment angle between them is 30°.

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Abstract

The invention relates to a jet de-scaling system and method for surfaces of metal bars and wires. The system comprises nozzle units for jetting mixed jet flows for de-scaling of outer surfaces of a bar and a wire (111 and 211). The system is characterized in that the nozzle units comprise first, second, third, fourth and fifth nozzle units (A, B, C, D and E) which are arranged on the peripheral outsides of the bar and the wire (111 and 211) circumferentially. According to the jet de-scaling system and method, by the aid of a mode that a plurality of the units of mixed jet flow nozzles are connected in series and specially arranged, continuous efficient cleaning of scales on surfaces of the bar and the wire is achieved, and the de-scaled bar and wire surfaces are rapidly flushed and dried by relying on the water flushing jet units and a compressed air drying unit connected in series, so that bar and wire surfaces completely meet surface treatment requirements by following processes.

Description

technical field [0001] The invention relates to the technical field of metal surface cleaning. Specifically, the invention relates to a system and method for jet descaling of metal rods and wires in a cold state. The jet descaling system and method for metal rods and wires are mainly used to realize the Continuous jet descaling of state metal rods and wires. Under the condition that the metal rods and wires maintain sufficient tension, multiple groups of mixed jet nozzles with different arrangements are used to spray mixed jets on the surface of rods and wires, and high-speed jets are used for surface grinding. Cutting and cleaning, followed by high-pressure water washing and rapid washing and drying of the descaled rod and wire surface, to ensure that the rod and wire surface fully meet the surface treatment requirements of the subsequent process. Background technique [0002] During the hot rolling or heat treatment process of metal materials, a dense covering composed of ...

Claims

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Application Information

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IPC IPC(8): B21B45/08B24C5/04B24C11/00
Inventor 段明南
Owner BAOSHAN IRON & STEEL CO LTD
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