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Flange producing technique

A production process and flange technology, which is applied in the field of flange production process, can solve problems affecting the dimensional accuracy and surface finish of flanges, reduce the service life and precision of turning tools, and reduce the service life of lathes, so as to save production equipment and performance Uniform, efficiency-enhancing effect

Inactive Publication Date: 2015-07-08
ANHUI HONGJIE PIPELINE MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the bad oxide skin on the flange has not been removed, there is a lot of dust, and the surface hardness of the flange is high. When turning, it must be used on an ordinary lathe, and then on a CNC lathe. The service life of the lathe is reduced, which directly affects the dimensional accuracy and surface finish of the flange

Method used

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  • Flange producing technique

Examples

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Effect test

Embodiment 1

[0025] A flange production process, including flange forging blank and blank cutting forming, the steps are as follows:

[0026] a. After the raw material round bar is cut, it enters the electric furnace for heating, and adopts a four-stage heating method. The heating temperature of the first stage is 800°C, and the time is 12s; the heating temperature of the second stage is 950°C, and the time is 26s; the third stage The heating temperature of the stage is 850°C, and the time is 16s; the heating temperature of the fourth stage is 730°C, and the time is 30s;

[0027] b. After the heated raw material round bar is cooled to room temperature, put it into the punch press and forge it into the required flange shape;

[0028] c. Then put it into the friction press, and cold-extrude it on the mold to the basic size of the flange; and then undergo solid solution heat treatment to form a flange blank;

[0029] The solution heat treatment steps are as follows:

[0030] Heat th...

Embodiment 2

[0036] A flange production process, including flange forging blank and blank cutting forming, the steps are as follows:

[0037] a. After the raw material round bar is cut, it enters the electric furnace for heating. The heating adopts a four-stage heating method. The heating temperature of the first stage is 1150°C, and the time is 12s; the heating temperature of the second stage is 980°C, and the time is 22s; The heating temperature of the third stage is 900°C, and the time is 14s; the heating temperature of the fourth stage is 740°C, and the time is 20s;

[0038] b. After the heated raw material round bar is cooled to room temperature, put it into the punch press and forge it into the required flange shape;

[0039] c. Then put it into the friction press, and cold-extrude it on the mold to the basic size of the flange; and then undergo solid solution heat treatment to form a flange blank;

[0040] The solution heat treatment steps are as follows:

[0041] Heat the...

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Abstract

The invention discloses a flange producing technique. The flange producing technique comprises a flange stock forging and a blank cutting and shaping; the flange stock forging comprises an electric stove heating, forging and shaping after cooling, extruding and shaping, and solution heat treatment; the blank cutting and shaping includes punching hole, acid washing, rough and fine turning, outer hole drilling, and processing and shaping. A crystal grain of the forging stock is uniform in organization ,low in hardness, good in toughness, high in yield degree, strong in tensile strength, and standard elongation rate; the flange stock forging efficiency is improved by 300%, and materials can reach zero loss; the produced flange disk is accurate in dimension and good in surface finishing degree.

Description

technical field [0001] The invention relates to a production process, in particular to a flange production process. Background technique [0002] Flanges are important pipe connections and are widely used. At present, in the manufacturing process of the flange, it is usually directly machined (lathe processing, milling machine processing, etc.) Very serious, accounting for 40%-50%. Due to long-term deep processing, the residual stress of the product is high, and the hardness of the material is high, which directly affects the mechanical properties and performance of the material. [0003] At the same time, the current flange processing usually uses the middle of the flange to drill the hole first, then uses the ordinary lathe to rough the middle hole and the outer circle, then uses the CNC lathe to finish the car, and finally uses the ordinary drill to drill the hole. Due to the need to turn off the inner hole, the cutting volume is large and the material loss is large. ...

Claims

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Application Information

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IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 夏雪波夏晨杰
Owner ANHUI HONGJIE PIPELINE MFG
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