Protection method of high-pressure descaling jetting integrated pipe

Abstract

The invention discloses a protection method of a high-pressure descaling jetting integrated pipe. The protection method comprises the steps that materials without rusting in a water environment and with high anti-erosion strength are selected and are made into a plurality of U-shaped protective sleeves with the same type specification; the depth of each protective sleeve is determined; the position for forming a sleeve hole in the bottom of each protective sleeve is determined; the positions for forming lifting holes in the upper part of each protective sleeve are determined; a picking rod pinis inserted into each lifting hole; a clamping component is correspondingly screwed into each of the two ends of a double-head screw rod, then, the double-head screw rods are placed above the jettingintegrated pipe, and then the picking rod pins are in threaded connection with the corresponding end parts of the double-head screw rods; and the middle positions of the double-head screw rods are rotated, so that the picking rod pins are gradually screwed into the end parts of the double-head screw rods, and the picking rod pins drive the protective sleeves to be lifted upwards to enable the protective sleeves to be fixedly attached to the outer side of the jetting integrated pipe. According to the protection method of the high-pressure descaling jetting integrated pipe, the jetting integrated pipe on high-pressure descaling equipment can be prevented from being damaged by direct cutting by high-pressure reflecting water, so that the service life of the jetting integrated pipe is prolonged, and the management cost is reduced.

Description

technical field [0001] The invention relates to a hot-rolled roughing and finishing mill, and more specifically relates to a protection method for a high-pressure descaling and spraying manifold. Background technique [0002] In the front section of the hot-rolled rough and finish mills, there is a high-pressure descaling process device. Dozens of nozzles are arranged and welded on the spray manifold of the device, and the pressure of high-pressure water sprayed through these nozzles is ≥16-21Mpa. . [0003] Such as figure 1 As shown, when dozens of nozzles 2 on the jet manifold 1 perform high-pressure forced descaling directly on the surface of the red billet 3 , the high-pressure water 4 will be reflected from the surface of the red billet 3 to the jet manifold 1 . another example figure 2 As shown, the high-pressure water 4 has more than one hundred injections per hour, and the tube wall of the injection manifold 1 after being washed by reflection day and night will b...

AI Technical Summary

Problems solved by technology

another example figure 2 As shown, the high-pressure water 4 has more than one hundred injections per hour, and the tube wall of the injection manifold 1 after being washed by reflection day and night will be thinned and damaged by cutting (such as figure 2 The concave position shown on the middle injection manifold 1), once penetrated, the high-pressure water will be sprayed out from the damaged part, and it will become larger and larger in a short time, resulting in an increase in the supply load of the high-pressure water preparation system

[0004] However, there is no good preventive method at present, and only more and more expensive spray integrated pipes can be used. The pipe material is increased from A3 steel to 16 manganese steel, and the pipe wall is increased from 6mm to 16mm.

In the end, the production cost of the whole set of spray integrated tubes is pushed up step by step, and the production cycle is long and the cost is high. The price of a set of spray integrated tubes is about 200,000 yuan, and the annual maintenance cost of only one descaling process is about 100,000 yuan.

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