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On-line spray type quenching equipment for steel tubes

A quenching equipment and spray technology, applied in the field of steel rolling, can solve the problems of difficulty in ensuring water supply flow, pressure stability, reducing the service life of water system equipment, unqualified steel pipe quenching quality, etc. The effect of saving construction investment costs, reducing production and maintenance costs

Inactive Publication Date: 2017-02-08
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the water system of the external spraying and internal spraying devices, if the intermittent water supply to the spraying steel pipe quenching device is carried out by starting and stopping the water pump, it is difficult to ensure the stability of the water supply flow and pressure, resulting in unqualified steel pipe quenching quality, and It is easy to cause equipment failure of the water system and reduce the service life of the water system equipment

Method used

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  • On-line spray type quenching equipment for steel tubes
  • On-line spray type quenching equipment for steel tubes
  • On-line spray type quenching equipment for steel tubes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] Such as figure 1 As shown, this embodiment provides an online spray quenching equipment suitable for steel pipes, which is an independent water system in terms of water system. It includes inner spray water supply and return device 1, outer spray water supply and return device 2, spray quenching device 3, iron oxide skin ditch device 4, return water treatment device 5, cold water pool 6, and control device 7. The inner spray water supply and return device 1 and the outer spray water supply and return device 2 are respectively connected to the spray quenching device 3, the cold water pool device 6, and the control device 7, and the return water treatment device 5 is respectively connected to the oxide scale ditch device 4 and the cold water pool 6 devices, the spray quenching device 3 is connected to the oxide scale ditch device 4, and the internal spray water supply device 1 includes a first pump station 101, a first pipeline filter 102, a first water supply three-way v...

Embodiment 2

[0104] In this embodiment, in order to make full use of the existing water supply and drainage facilities in the factory area, simplify the equipment composition, and provide an improved quenching equipment suitable for online spraying of steel pipes. From the perspective of the water system, it belongs to independent internal water spraying system.

[0105] Such as figure 2 As shown, the equipment includes an inner spray water supply and return device 8 , an outer spray water supply and return device 9 , a spray quenching device 10 , an oxide scale ditch device 11 , a cold water pool device 12 , and a control device 13 . The inner spray water supply and return device 8 and the outer spray water supply and return device 9 are respectively connected to the spray quenching device 10, the cold water pool device 12, and the control device 13. The spray quenching device 10 is connected to the oxide scale groove device 11, and the internal spray The water supply and return device ...

Embodiment 3

[0123] This embodiment is a further improvement on the basis of Embodiment 2. In actual production, the water discharged from the internal spray quenching does not need to be continuously treated. This embodiment is to save water resource consumption and reduce water treatment costs. design.

[0124] Such as image 3 As shown, in this embodiment, the second internal spray device 209 is connected to the third water supply pipeline 203 in such a way that a third water supply three-way valve 301 is set on the third water supply pipeline 203, and the third water supply three-way valve The water inlet of 301 communicates with the third water supply pipeline 203, the first water outlet of the third water supply three-way valve 301 communicates with the inner spray cone nozzle 302 of the second internal spray device 209, the second of the third water supply three-way valve 301 The water outlets are respectively connected to two branches of the inner spray return pipe 304 and the sla...

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Abstract

The invention discloses on-line spray type quenching equipment for steel tubes and belongs to the technical field of steel rolling. The on-line spray type quenching equipment aims at achieving the effects that the on-line spray type quenching equipment and method applicable to the steel tubes are provided; an outer spray water supply system and an inner spray water supply system of a spray type steel tube quenching device can adopt the normally-open mode; the scale of water supply and drainage design is a half or more smaller than that of conventional design; constructional investment cost is saved; and production cost and maintenance cost are lowered. The equipment comprises an inner spray water supply water returning device, an outer spray water supply water returning device, the spray type quenching device, an oxidized iron sheet groove device, a water returning treatment device, a cold water pool device and a control device. The invention further discloses another type of quenching equipment which comprises an inner spray water supply water returning device, an outer spray water supply water returning device, the spray type quenching device, an oxidized iron sheet groove device, a cold water pool device and a control device. The equipment is particularly applicable to on-line quenching of the steel tubes.

Description

technical field [0001] The invention relates to the technical field of steel rolling, in particular to online spray quenching equipment for steel pipes. Background technique [0002] At present, the spray type steel pipe quenching device has been widely used in the steel pipe heat treatment production line. Spraying water while rotating the steel pipe can ensure uniform quenching of the steel pipe and effectively prevent the steel pipe from bending during quenching. Inner spray quenching of the steel pipe, spray water to the inside of the steel pipe from the nozzle facing the nozzle, the water supply pressure is 0.6-0.8MPa; external cooling is to spray laminar flow quenching water along the upper part of the steel pipe axis, the water supply pressure is 0.2-0.3MPa, the water supply pressure is 0.2-0.3MPa, The system is intermittent. With the different specifications of heat-treated steel pipes, the amount of water sprayed for internal and external cooling varies greatly. ...

Claims

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Application Information

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IPC IPC(8): C21D1/667C21D9/08C21D11/00
CPCC21D1/667C21D9/085C21D11/005
Inventor 姚发宏徐言东余伟程知松
Owner UNIV OF SCI & TECH BEIJING
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