Eccentric check reducer forging method

An eccentric tube, one-way technology, applied in the field of metal forging, can solve the problems of inconvenient installation, increased cost, material waste, etc., and achieves the effects of high production efficiency, qualified performance, and avoidance of rod deformation.

Inactive Publication Date: 2014-05-21
CHINA HANGFA SOUTH IND CO LTD
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  • Claims
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Problems solved by technology

With the development of industry, it is necessary to adopt high-strength unidirectional eccentric tubes with different diameters that can withstand high pressure. If the method of increasing the thickness of cast eccentric tubes can barely meet the requirements, it will inevitably lead to waste of materials, increased costs and inconvenient installation. Forging The one-way eccentric tube with different diameter just solves this problem

Method used

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  • Eccentric check reducer forging method
  • Eccentric check reducer forging method
  • Eccentric check reducer forging method

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Embodiment Construction

[0019] The present invention will be described in further detail below by taking the forging of a unidirectional eccentric tube with a different diameter of 40Cr as an example:

[0020] Such as figure 1 Shown: The length of the one-way eccentric tube with different diameters is AD 560MM, the forming part is BD 180MM, and the outer diameter of the rod is the inside diameter of The maximum size of the outer hole of the forming part is 178MM, and the minimum size is 109MM; the maximum size of the inner hole is 150MM, and the minimum size is 53MM.

[0021] A method for forging a one-way eccentric tube with different diameters, comprising the following steps:

[0022] In the first step, the front end of the tube blank is turned into a slope, and the size of the slope angle a is 7°;

[0023] The second step is to apply glass lubricant to the inner hole of the tube blank, and the spraying range is to extend 20MM from the forming part and backward;

[0024] The third step is to ...

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Abstract

The invention belongs to the field of the metal forging technology, and particularly relates to an eccentric check reducer forging method. The method includes the following steps that (Step 1) a slope is turned on the front end of a pipe billet, and the slope angle Alpha is 5 to 13 degrees; (Step 2) glass lubricant is applied in the bore of the pipe billet, and the spraying range includes the shaped part and is extended backward for 15mm to 30mm; (Step 3) the coated pipe billet is heated, and the heating range includes the shaped part and is extended backward for 5mm to 10mm; (Step 4) a die with a guiding mechanism is used for forging on a horizontal forging machine, including: preforging: a semi-conical surface, of which the slope is smaller than 26 degrees, is first forged on the shaped orifice of the pipe billet; final forging: the shaped orifice of the pipe billet is then forged into an eccentric check reducer; (Step 5) the finally forged eccentric check reducer is put into an insulating box and slowly cooled.

Description

technical field [0001] The invention belongs to the technical field of metal forging, in particular to a method for forging unidirectional eccentric tubes with different diameters. Background technique [0002] The one-way eccentric pipe with different diameters is mainly used in oil pipeline joints, pressure pipeline joints, etc., and is traditionally produced by casting. With the development of industry, it is necessary to use high-strength unidirectional eccentric tubes with different diameters that can withstand high pressure. If the method of increasing the thickness of cast eccentric tubes can barely meet the requirements, it will inevitably lead to waste of materials, increased costs, and inconvenient installation. Forging The one-way eccentric tube with different diameter just solved this difficult problem. Contents of the invention [0003] The purpose of the present invention is: [0004] The purpose of the present invention is to provide a method for forging u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J5/02B21J1/06B21K1/14
Inventor 张强朴学华李建军黄茂林
Owner CHINA HANGFA SOUTH IND CO LTD
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