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Manufacturing process and equipment for upset forging of flanges

A manufacturing process and upsetting technology, which is applied in the field of upsetting flange manufacturing process and equipment, can solve the problems of easy generation of trachoma and pores, slag inclusion, waste of materials and energy, and limitation of application range, so as to shorten the production time and cost Save money and ensure the effect of traceless welding

Inactive Publication Date: 2011-02-02
岳炳坤
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Flanges are widely used in various industries and fields. At present, flange production mainly adopts forging, casting and rolling methods. To produce large flanges by forging method, the whole steel ingot must be cut and forged, and multiple times are required. Heated forging wastes materials and energy, the product quality is low, and the pollution is serious; limited by the size of the flange, the production of the rolled flange requires expensive rolling equipment of different specifications, and the equipment investment is still large. In addition, the distortion after rolling is serious. Leveling is difficult, and processes such as cleaning, beveling and welding are required, which wastes manpower and increases production costs. At the same time, production efficiency is low and welding defects are prone to occur; the production of flanges by casting methods requires sand molds and molten metal , casting, and prone to defects such as trachoma, pores, and slag inclusions. Due to low strength, the scope of use is greatly limited. Generally, important products do not use this production method

Method used

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  • Manufacturing process and equipment for upset forging of flanges
  • Manufacturing process and equipment for upset forging of flanges
  • Manufacturing process and equipment for upset forging of flanges

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Upsetting flange manufacturing process, the pre-made steel flange strips are pressed into semicircles by a compression molding machine, and then the four end faces of the two semicircles are uniformly heated by an IGBT induction heating device, and the two semicircles are extruded by the upsetting equipment to make the two A half-circle quick connection, the process steps are as follows:

[0047] Step 1. Select steel materials according to production requirements in the production preparation stage, gas-cut the steel materials that meet the production requirements into corresponding widths and lengths, and make steel flange strips (the strips have processing allowances);

[0048] Step 2. Place the steel flange strips in the die core of the molding machine, and adjust the position of the steel flange through the anti-twist wall on the die core, and then use segmental extrusion, first pressing the steel method The two ends of the blue strip, and then press the middle of t...

Embodiment 2

[0052] The upsetting flange manufacturing process uses a compression molding machine to press the pre-made aluminum flange strip into a semicircle, and then uses an IGBT induction heating device to evenly heat the four end faces of the two semicircles. After being extruded by the upsetting equipment, the two A half-circle quick connection, the process steps are as follows:

[0053] Step 1. Select aluminum materials according to production requirements in the production preparation stage, and cut the aluminum materials that meet the production requirements into corresponding width and length by gas cutting to make aluminum flange strips;

[0054] Step 2. Place the aluminum flange strip in the die core of the molding machine, and use segmental extrusion to press the two ends of the aluminum flange strip first, and then press the middle of the aluminum flange strip to make aluminum Flange semicircle;

[0055] Step 3. Based on the standard parts, correct and cut the semicircle of...

Embodiment 3

[0058] The upsetting flange manufacturing process uses a compression molding machine to press the pre-made copper flange strip into a semicircle, and then uses an IGBT induction heating device to evenly heat the four end faces of the two semicircles. A half-circle quick connection, the process steps are as follows:

[0059] Step 1. In the production preparation stage, copper materials are selected according to production requirements, and the copper materials that meet the production requirements are cut into corresponding widths and lengths by gas cutting to make copper flange strips;

[0060] Step 2. Place the copper flange strip in the die core of the molding machine, and use segmental extrusion to first press the two ends of the copper flange strip, and then press the middle of the copper flange strip to make a copper flange. Flange semicircle;

[0061] Step 3. Based on the standard parts, correct and cut the semicircle of the pressed copper flange, and then clean and der...

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Abstract

The invention relates to manufacturing process and equipment for the upset forging of flanges, relating to manufacturing process and equipment for flanges. The manufacturing process comprises the following steps of: making materials into flange metal semicircles, evenly heating and butting the flange metal semicircles by adopting upset forging equipment, wherein the pressure on an extrusion surface is 40 to 70MP and the heating temperature is 500 to 1300 DEG C; and quickly connecting the two semicircles after the extrusion through the upset forging equipment to obtain a product. The invention has the advantages of capability of producing various annular steel flanges and aluminum flanges with different specifications only by using the upset forging equipment and simple matched moulding beds so that the investment in equipment and the energy consumption only account for a fraction or one of dozens of that of traditional equipment, cost is saved by more than 30% and production efficiency is increased by several times.

Description

technical field [0001] The invention relates to a flange manufacturing process and equipment, in particular to an upsetting flange manufacturing process and equipment, in which strips of metal material are cut and bent into semicircles, and then hot-pressed and upset butted to form flanges. Background technique [0002] Flanges are widely used in various industries and fields. At present, flange production mainly adopts forging, casting and rolling methods. To produce large flanges by forging method, the whole steel ingot must be cut and forged, and multiple times are required. Heated forging wastes materials and energy, the product quality is low, and the pollution is serious; limited by the size of the flange, the production of the rolled flange requires expensive rolling equipment of different specifications, and the equipment investment is still large. In addition, the distortion after rolling is serious. Leveling is difficult, and processes such as cleaning, beveling an...

Claims

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Application Information

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IPC IPC(8): B21K1/76B21K29/00
Inventor 岳炳坤岳江全岳江峰
Owner 岳炳坤
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