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A curved multi-angle array jet nozzle and its application

A technology of array jets and jet nozzles, applied in furnaces, furnace types, heat treatment equipment, etc., to achieve the effect of improving heat exchange efficiency and uniformity, improving heat exchange efficiency and long service life

Active Publication Date: 2019-03-29
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the technical problems existing in the cooling nozzle of the low-pressure section of the existing roller quenching machine, the purpose of the present invention is to provide an arc-surface multi-angle array jet nozzle and its application, which can meet the uniform, high-efficiency and high-precision quenching of steel plates.

Method used

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  • A curved multi-angle array jet nozzle and its application
  • A curved multi-angle array jet nozzle and its application
  • A curved multi-angle array jet nozzle and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] This embodiment provides an operation technical solution when the arc surface multi-angle array jet nozzle sprays water to quench the steel plate with a width greater than or equal to the length of the middle section.

[0035] Such as figure 1 , figure 2 , image 3 , Figure 4 As shown, before the steel plate (8) enters the low-pressure section of the roller quenching machine, the cooling water with a pressure of 0.2-0.5 MPa flows through the water inlet interface (1) of the middle section (16) and the two side sections (15) respectively according to the process setting flow rate. The water inlet port (1) of the middle section (16) and the water equalization chamber (2) of the two side sections (15) are respectively injected into the water equalization chamber (2) of the two side sections (15). After the water equalization chamber (2) is filled with water, two rows of equalization holes (13) Inject into the outer water collection chamber (3), and the pressurized coo...

Embodiment 2

[0038] This embodiment provides a technical solution for dismantling and installing the arc-surface multi-angle array jet nozzle.

[0039] Such as figure 1 , Figure 4 As shown, before disassembling the jet nozzle, close all manual maintenance valves in the low-pressure section of the roller quenching machine, and the control valve group of the water supply pipeline is in a power-off state. When disassembling the upper nozzle (11), transport the steel plate (8) reversely from the outlet of the low pressure section of the roller quenching machine to the upper nozzle (11) to be disassembled, and loosen the fastening mechanism (6) on both sides of the upper nozzle (11). The fastening bolts and the water inlet port (1) of the upper nozzle (11) are connected to the flange fastening bolts, and the upper nozzle (11) is placed on the steel plate (8), and the steel plate (8) carries the upper nozzle (11) by a roller The exit of the low-pressure section of the quenching machine drives...

Embodiment 3

[0041] This embodiment provides a technical solution for unclogging operation of arc-surface multi-angle array jet nozzles.

[0042] Such as figure 1 As shown, first dredge the small nozzle (5) water spray holes embedded in the curved panel (4) one by one with a metal rod with a diameter slightly smaller than the small nozzle (5) water spray hole, to ensure that there is no water spray in the small nozzle (5) water spray hole. foreign body. Afterwards, open the drain hole (7) on the end face of the water collection chamber (3) of the two side sections (15) of the nozzle and the drain hole (7) on the outer wall of the water collection chamber (3) of the middle section (16), by two The water inlet port (1) of the side section (15) is respectively injected with a flow rate of 30-50m 3 / h, cooling water with a pressure of 0.1MPa, injected from the water inlet port (1) of the middle section (16) with a flow rate of 60-100m 3 / h, and cooling water with a pressure of 0.1MPa, rinse...

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Abstract

The invention belongs to the field of heat treatment of metal materials and relates to a curved multi-angle array jet nozzle and its application. The jet nozzle includes a water inlet interface, a water equalizing chamber, a water collecting chamber, a curved panel, a small nozzle, and a fixed mechanism. It adopts a multi-row curved surface scattering jet method to improve heat exchange efficiency and uniformity; it adopts a segmented design The solution saves water and energy during quenching of narrow steel plates, and improves the heat exchange efficiency on the surface of the steel plate; the nozzle and the rollers on both sides form an independent cooling unit to achieve zoned control of the flow rate on the surface of the steel plate; a nozzle form with a small nozzle embedded in the curved panel is used to prevent Nozzle deformation or damage caused by steel plate collision. The invention solves the problems of low cooling efficiency, poor cooling uniformity, poor cooling process controllability and low steel plate final cooling temperature control accuracy in the low-pressure section of the roller quenching machine. The nozzle is not easily deformed, has a long service life, is easy to disassemble and assemble, and is easy to clear blockage.

Description

technical field [0001] The invention belongs to the field of heat treatment of metal materials, and relates to an arc-surface multi-angle array jet nozzle and its application. Background technique [0002] The roller quenching machine is widely used in the field of off-line quenching of steel plates because of its advantages such as high cooling intensity, uniform cooling, high control precision, good plate shape after quenching, and continuous production. The low-pressure section of the roller quenching machine adopts low-pressure water of ≤0.5MPa to further reduce the temperature of the steel plate after cooling in the high-pressure section of the roller quenching machine with a relatively weak cooling intensity, so as to prevent uneven phase transformation of the steel plate, thereby causing deterioration of the plate shape and quenching residual stress big and other issues. In addition, in recent years, the normalization controlled cooling (NAC) function after normalizi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D1/667C21D9/46
CPCC21D1/667C21D9/46
Inventor 王昭东付天亮韩毅李勇李家栋邓想涛王国栋
Owner NORTHEASTERN UNIV LIAONING
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