Identical-intensity flexible piping joint clasp and its production

Abstract

There is disclosed an equal strength hose connector clip and its manufacture method. The clip includes a clip body and ear-seats at both ends of the clip body. The manufacture method includes the following steps of setting the thickness of the clip in equal strength proportions; rolling the steel band blanks; cutting out the steel band blank of the corresponding length; milling the blank into the ring body using the roller mould under the condition of normal temperature and then being separated into half-round clip bodies to be made the inventive clip after welding the ear-seats.

Description

1. Technical field: [0001] The invention belongs to the technical field of pipeline connection, and in particular relates to a flexible pipe joint clamp and a manufacturing method thereof. 2. Background technology: [0002] The currently known flexible pipe joint clamps include a clamp body and ear seats at both ends of the clamp. The wall thickness of the clamp body is the same everywhere. Through accurate calculations, the inventors have found that the forces on the clamp body wall are different everywhere, and the wall thickness of each place is the same. The same cannot achieve equal strength and maximize the use of steel, and the wall thickness can be set according to the magnitude of the force to save steel; the known manufacturing methods of flexible pipe joint clamps are generally made by casting technology and hot stamping technology, and the casting technology can manufacture various There are various shapes of clamps, but the process is complicated, the production...

AI Technical Summary

Problems solved by technology

[0002] The currently known flexible pipe joint clamps include a clamp body and ear seats at both ends of the clamp. The wall thickness of the clamp body is the same everywhere. Through accurate calculations, the inventors have found that the forces on the clamp body wall are different everywhere, and the wall thickness of each place is the same. The same cannot achieve equal strength and maximize the use of steel, and the wall thickness can be set according to the magnitude of the force to save steel; the known manufacturing methods of flexible pipe joint clamps are generally made by casting technology and hot stamping technology, and the casting technology can manufacture various There are various shapes of clamps, but the process is complicated, the production cost is high, and the mechanical strength of the clamps is low. Although the hot stamping process can make up for the deficiency of the casting process, this method can only manufacture clamps with simple shapes. For rings, etc., which are more complicated It is difficult to manufacture the clamps, and Chinese patent 92106535.3 discloses a method for manufacturing flexible pipe joint clamps, including (1) rolling steel strips, rolling out the required steel strips on the rolling mill, (2) blanking, According to the arc length of the hoop, the steel strip blank of corresponding length is intercepted, (3) hot press forming, after heating the intercepted steel strip blank, stamp and bend it into a semicircular hoop with a mold on the press, (4) welding Ear seat, weld the ear seat to both ends of the clamp body, (5) mill the bottom surface of the ear seat, mill the bottom surface of the ear seat flat on a milling machine, and the rolling process obtains a grooved steel strip with grooves, the steel strip The geometric dimension of the cross section of the cross section is the same as that of the axial section of the hoop manufactured. This method has the advantages of simple process, low production cost and high mechanical strength. The disadvantage is that the wall thickness of the hoop manufactured is the same. Due to different parts of the clamp during use, the steel raw materials cannot be used to the maximum extent, resulting in waste of raw materials. The second is the use of hot stamping forming technology, which needs to heat the steel strip blank to a certain temperature, resulting in energy consumption and process material loss. The strength of the clamp body is weakened, and the production cost is high

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