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Forming technology for metal elastic sealing ring

A technology of elastic sealing and forming process, applied in the field of cold roll forming, can solve the problems of large forming size deviation, strip thickness reduction, cracking, etc., achieve the effect of small size deviation, small thickness change, and improve dimensional accuracy

Active Publication Date: 2015-05-20
BEIJING BEIYE FUNCTIONAL MATERIALS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a molding process for metal elastic sealing rings, which solves the problems of strip thickness reduction, cracking, and large deviation of molding dimensions when processing "W" and multi-bend "W"-shaped sections.

Method used

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  • Forming technology for metal elastic sealing ring
  • Forming technology for metal elastic sealing ring
  • Forming technology for metal elastic sealing ring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A molding process of a "W"-shaped metal elastic sealing ring, the ring section has a central curved arc A, two elastic curved arcs C, its interconnected straight connection part B and left and right convex arcs Contact surface D. The selected raw material is a nickel-based superalloy cold-rolled strip with a thickness of 0.28 mm.

[0025] Cut the strip into 22mm wide and 2.198m long according to the size of the finished product, and weld it into a ring; place the belt ring on the cold forming equipment, fix the ring, and spray lubricating oil all the time during the processing;

[0026] A molding process of a metal elastic sealing ring of the present invention specifically comprises the following steps:

[0027] Step 1: Put the ring on the cold bending forming equipment, use a set of cold bending rollers for spinning, the ring rotates around the center of the circle, and after one rotation, the middle part of the ring section forms a circular arc protrusion.

[0028] ...

Embodiment 2

[0034] A molding process of a multi-curved "W"-shaped metal elastic sealing ring, the ring section has a central curved arc A, four elastic curved arcs C, its interconnected straight connecting parts B and left and right outer convex circles Arc-shaped contact surface D. The selected raw material is a nickel-based superalloy cold-rolled strip with a thickness of 0.4 mm.

[0035] Cut the strip into 36mm wide and 2.512m long according to the size of the finished product, and weld it into a ring; place the belt ring on the cold forming equipment, fix the belt ring, and spray lubricating oil all the time during the processing;

[0036] A molding process of a metal elastic sealing ring of the present invention specifically comprises the following steps:

[0037] Step 1: Same as Step 1 of Example 1.

[0038] Step 2: Same as Step 2 of Example 1.

[0039] Step 3: Same as Step 3 of Example 1.

[0040] Step 4: The ring does not move, replace the mold roll, position the mold roll wit...

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Abstract

The invention discloses a forming technology for a metal elastic sealing ring and belongs to the technical field of cold roll forming. The forming technology includes the following specific technology steps that a strip is cut to be in a corresponding width and a corresponding length according to the finished product size demand and welded to be in a ring shape; a strip ring is fixed, and spinning is conducted on the strip ring through a set of cold rolling rollers; the two sides of a circular arc are downwards extruded and deformed, a central bent circular arc (A) and a flat and straight connecting part (B) connected with the central bent circuit arc (A) are obtained, materials on the two sides of a section are bent upwards through a forming roller, and two elastic bent circular arcs (C) are formed; the obtained ring piece is arranged in a die roller, the two wings of the section are bent to form a left outwards-convex circular arc contact face (D) and a right outwards-convex circular arc contact face (D), and the ring piece is deformed after rotating by a circle; the left outwards-convex circular arc contact face (D) and the right outwards-convex circular arc contact face (D) are extruded from the two sides and are gathered in face-to-face mode and are deformed after rotating by a circle. The forming technology has the advantages that the surface quality of a product is good, the size deviation is small, and the variation of thicknesses of all parts of the section is small.

Description

technical field [0001] The invention belongs to the technical field of cold bending forming, and in particular relates to a forming process of a metal elastic sealing ring. Especially the cold-bending forming process of "W" and multi-bending "W"-shaped metal elastic sealing rings. Background technique [0002] Metal elastic sealing is a flange sealing technology that is light in weight and can adapt to harsh environments with the development of the aerospace industry. This sealing technology has been widely used in aerospace, petrochemical, gas power and other fields. [0003] Metal elastic sealing rings are usually used in environments with high temperature, high pressure difference, and certain vibration or deformation, which have higher requirements for flange sealing rings. Therefore, the elastic sealing ring is made of nickel-based superalloy strip with high temperature resistance and good mechanical properties to ensure the sealing performance. Metal elastic sealing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D11/06
CPCB21D11/06
Inventor 曹宇秦力群章清泉孙建民孙建周李明扬吴会云魏然吴兵
Owner BEIJING BEIYE FUNCTIONAL MATERIALS CORP
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