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A technique and a device thereof for push-making elbows by the intermediate frequency induction heating

An induction heating and induction heater technology, applied in the field of pipe fitting elbow manufacturing, can solve the problems of thinness, difficulty in medium frequency induction heating, and difficulty in reaching the temperature of the tube blank, and achieve the effects of accurate size, beautiful appearance and accurate bending angle.

Active Publication Date: 2009-03-04
NINGBO LIANTONG EQUIP MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these processes and their equipment usually have the following problems: First, when pushing some elbows made of non-magnetic alloys as raw materials, such as non-magnetic austenitic stainless steel, medium-frequency induction heating is very difficult, making it difficult to Reach the required temperature; secondly, when the ordinary process and its equipment push the thick-walled elbow, it is easy to produce the problem that the inner side is thicker and the outer side is thinner

Method used

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  • A technique and a device thereof for push-making elbows by the intermediate frequency induction heating
  • A technique and a device thereof for push-making elbows by the intermediate frequency induction heating
  • A technique and a device thereof for push-making elbows by the intermediate frequency induction heating

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Experimental program
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Effect test

Embodiment 1

[0020] Embodiment 1, the intermediate frequency induction heating in this embodiment pushes the material to be the technology of the elbow of carbon steel:

[0021] Step 1: Put at least one piece of tube blank 4 through the end of the core rod 6 of the horn mandrel on the body of the core rod 6, and move the tube blank 4 along the rod body to the horn core head 7 of the horn mandrel and approach it The horn core head 7 of the horn mandrel; pass the end of the core rod 6 through the middle of the push plate 3 and connect it to the fixed end 2, so that the tube blank 4 is located on the side of the push plate 3 facing the horn core head 7 of the horn mandrel, And the periphery of the pipe opening of the tube blank 4 abuts against the periphery of the opening of the push plate 3;

[0022] Step 2: At least two symmetrically configured propulsion cylinders 1 are connected to the propulsion plate 3 to propel the tube blank 4 along the core rod 6 to the horn core 7 at a propulsion sp...

Embodiment 2

[0027] In this embodiment, the intermediate frequency induction heating pushes the material to be the process of the elbow of non-magnetic austenitic stainless steel:

[0028] Step 1: Put at least one piece of tube blank 4 through the end of the core rod 6 of the horn mandrel on the body of the core rod 6, and move the tube blank 4 along the rod body to the horn core head 7 of the horn mandrel and approach it The horn core head 7 of the horn mandrel; pass the end of the core rod 6 through the middle of the push plate 3 and connect it to the fixed end 2, so that the tube blank 4 is located on the side of the push plate 3 facing the horn core head 7 of the horn mandrel, And the periphery of the pipe opening of the tube blank 4 abuts against the periphery of the opening of the push plate 3;

[0029] Step 2: At least two symmetrically configured propulsion cylinders 1 are connected to the propulsion plate 3 to propel the tube blank 4 to move along the core rod 6 to the horn core 7...

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Abstract

The invention discloses a process of intermediate frequency induction heating propelling elbows and a device of the process. The process comprises coating at least one section of tube blank on a core rod from the terminal end of the core rod, fixing the terminal end of the core rod on the fixing end of the core rod, adopting hydraulic pressure to propel the tube blank through a propelling plate, heating the tube blank which is propelled on a horn core joint portion through a heater of the intermediate frequency inductions, thermal-deformating the tube blank which is propelled through a deforming section of the horn core joint, and squeezing a needing shaped elbow through a shaping section. The device of the process comprises a propelling oil cylinder, a fixing end of the core rod, the propelling plate, the core rod, the horn core joint, the heater of the intermediate frequency inductions, a piston and a connecting rod, wherein the core rod and the horn core joint are welded together into a horn core bar, the horn core joint is composed of a deforming section and a shaping section, a transverse section of the shaping section takes a positive round shape, the transverse section of the deforming section takes a oval shape, a circle center of the positive round shape and a central point of the oral shape are located on a central arc line of the horn core bar, both a long axle of the oral shape and a short axle of the oral shape are vertical to the central arc line of the horn core bar, the long axle of the oral shape is also vertical to a plane, and the central arc line of the horn core bar is located on the plane.

Description

technical field [0001] The invention relates to the field of manufacturing elbows of pipe fittings in various chemical production devices and industrial furnaces, in particular to a process and device for making elbows by medium-frequency induction heating, which are used to manufacture elbows of pipe fittings with uniform pipe wall thickness. Background technique [0002] At present, there are many processes and equipment for pushing elbows by medium frequency induction heating in the market. This process usually pushes the tube blank through the propulsion mechanism, softens the tube blank through medium frequency induction heating, and finally forms the tube blank through the horn core. The elbow, the equipment usually includes two propulsion cylinders installed side by side, piston, connecting rod and core rod fixed end, push plate, core rod, horn core head, medium frequency induction heater, the piston is located in the cylinder, and one end of the connecting rod It is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D9/12B21D9/04B21D9/18
Inventor 连海峰蔡丽萍
Owner NINGBO LIANTONG EQUIP MFG