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Novel flange manufacturing process

A manufacturing process and flange technology, which is applied in the field of new flange manufacturing process, can solve problems such as easy cracks or breaks, reduced service life of flanges, and uneven force on forgings, so as to enhance its own strength and service life. , the effect of uniform force

Inactive Publication Date: 2021-03-19
河北鑫泰管道科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a new type of flange manufacturing process, which has the advantages of uniform force on the forging during the upsetting process, high upsetting quality, high strength, and improved service life of the flange. The strength of the flange is relatively low, and it is easy to crack or break under the action of external force during use. The force of the forging is uneven during the upsetting process, which makes the forging easy to deform. At the same time, the corrosion resistance is poor, which reduces the service life of the flange. question

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A manufacturing process of a novel flange, comprising the following steps:

[0036] A: Select a steel plate with a thickness of 80mm as a spare, check the surface of the material, and it is not suitable to use the steel plate with serious corrosion, heavy skin, cracks and other defects;

[0037] B: Lift the vertically erected steel plate forgings into the upsetting equipment consisting of upsetting dies and rotary worktables with a hoist, fix the forgings on the rotary worktable, and use a 5000T hydraulic press to upset the forgings. During the process, the worktable is rotated until the entire surface of the forging is upset, so as to ensure that the forging is upset into a circle;

[0038] C: Forging the forgings obtained in step B, the forging is divided into two stages, the first stage is forging temperature 900°C, forging time is 18s, the second stage is forging temperature is 925°C, forging time is 15s, after the forging is completed Cooling, the cooling temperat...

Embodiment 2

[0048] A manufacturing process of a novel flange, comprising the following steps:

[0049] A: Select a steel plate with a thickness of 100mm as a spare, check the surface of the material, and it is not suitable to use the steel plate with defects such as severe corrosion, heavy skin, and cracks;

[0050] B: Lift the vertically erected steel plate forgings into the upsetting equipment consisting of upsetting dies and rotary worktables with a hoist, fix the forgings on the rotary worktable, and use a 5000T hydraulic press to upset the forgings. During the process, the worktable is rotated until the entire surface of the forging is upset, so as to ensure that the forging is upset into a circle;

[0051] C: Forging the forgings obtained in step B, the forging is divided into two stages, the first stage is forging temperature 915°C, forging time is 20s, the second stage is forging temperature is 930°C, forging time is 18s, after the forging is completed Cooling, the cooling temper...

Embodiment 3

[0061] A manufacturing process of a novel flange, comprising the following steps:

[0062] A: Select a steel plate with a thickness of 110mm as a spare, check the surface of the material, and it is not suitable to use the steel plate with serious corrosion, heavy skin, cracks and other defects;

[0063] B: Lift the vertically erected steel plate forgings into the upsetting equipment consisting of upsetting dies and rotary worktables with a hoist, fix the forgings on the rotary worktable, and use a 5000T hydraulic press to upset the forgings. During the process, the worktable is rotated until the entire surface of the forging is upset, so as to ensure that the forging is upset into a circle;

[0064] C: Forging the forgings obtained in step B. The forging is divided into two stages. The forging temperature of the first stage is 930°C and the forging time is 23s. The forging temperature of the second stage is 935°C and the forging time is 20s. After the forging is completed Coo...

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Abstract

The invention discloses a novel flange manufacturing process. The novel flange manufacturing process comprises the following steps: A, selecting a steel plate with the thickness of 80-110 mm for use,and checking the surface of the steel plate, wherein the steel plate with the defects of serious corrosion, double skin, cracks and the like is not suitable for being used; and B, hoisting a vertically-erected steel plate forged piece into upsetting equipment composed of an upsetting die and a rotary workbench through a hoisting tool, fixing the forged piece to the rotary workbench, upsetting theforged piece with a 5000T hydraulic machine, and driving the workbench to rotate in the upsetting process until the whole surface of the forged piece is upset in order to ensure that the forged pieceis upset into a circle. According to the novel flange manufacturing process, the problems that a flange prepared through an existing process is low in strength, cracks or fractures are likely to be generated under the action of external force in the using process, the forged piece is uneven in stress in the upsetting process, the forged piece is likely to deform, meanwhile, the corrosion resistance is poor, and the service life of the flange is shortened are solved.

Description

technical field [0001] The invention relates to the technical field of flange manufacturing technology, in particular to a novel flange manufacturing technology. Background technique [0002] Flanges are also called flange flanges or flanges. Flanges are parts that are connected to each other between shafts. They are used for connection between pipe ends. They are also useful for flanges on the inlet and outlet of equipment. The connection between equipment, such as reducer flange, flange connection or flange joint, refers to the detachable connection of flanges, gaskets and bolts as a combined sealing structure. Pipe flange refers to The flange used for piping in pipeline installations used in equipment refers to the inlet and outlet flanges of equipment. [0003] The strength of the flange prepared by the existing technology is relatively low, and it is easy to crack or break under the action of external force during use. the service life of the flange. Contents of the...

Claims

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Application Information

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IPC IPC(8): B23P15/00B21J5/08B21J5/00B21H1/06
CPCB23P15/00B21J5/08B21J5/002B21H1/06
Inventor 胡金明胡金生杨月明董芳马翠东
Owner 河北鑫泰管道科技有限公司