Method for improving vulcanization bonding strength of natural rubber elastic element and metal reinforcing element of flexible joint

A technology of metal reinforcement and natural rubber, applied in the field of vulcanized bonding strength of metal reinforcement

Inactive Publication Date: 2014-02-05
湖北三江航天江北机械工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects of the existing adhesives and bonding process parameters, and provide a method for improving the vulcanized bonding strength of the nat

Method used

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  • Method for improving vulcanization bonding strength of natural rubber elastic element and metal reinforcing element of flexible joint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] For a certain type of flexible joint, the complex of elastic parts and metal reinforcements is as follows: figure 1 As shown, it is made of 11 layers of elastic parts a and 10 layers of metal reinforcement b alternately vulcanized and bonded. The main material of elastic part a is natural rubber with a thickness of 2.2mm. Metal reinforcement b is made of 30CrMnSiA forgings with a thickness of 3mm, the method for the vulcanization bonding strength of the natural rubber elastic part of the flexible joint and the metal reinforcement part, including the following steps in turn:

[0025] 1) According to the design requirements of the flexible joint structure, the metal reinforcement is processed into a metal sheet of δ3×20×70 (mm), and the natural rubber elastic part is cut into a δ2.2×20×70 (mm);

[0026] 2) Sandblast the metal plate on both sides. Before sandblasting, put the metal plate into acetone to clean it to remove surface oil. After sandblasting, the surface is req...

Embodiment 2

[0034] For a certain type of flexible joint, it is made by alternately bonding 10 layers of elastic parts and 9 layers of metal reinforcements. The main material of the elastic parts is natural rubber with a thickness of 2mm. The material of the metal parts is 45# steel with a thickness of 2.5mm. The method for the vulcanization bonding strength of the natural rubber elastic part and the metal reinforcement part of the flexible joint includes the following steps in sequence:

[0035] 1) According to the design requirements of the flexible joint structure, the metal reinforcement is processed into a metal sheet of δ2.5×20×70 (mm), and the natural rubber elastic part is cut into a δ2.0×20×70 (mm);

[0036] 2) Double-sided sandblasting of the metal plate: before sandblasting, put the metal plate into acetone to clean, remove the surface oil, after sandblasting, the surface is required to be evenly fluffed to reveal the metallic luster;

[0037] 3) Put the sandblasted metal plate ...

Embodiment 3

[0044] For a certain type of flexible joint, it is made of 11 layers of elastic parts and 10 layers of metal reinforcements alternately vulcanized and bonded. The main material of the elastic parts is natural rubber with a thickness of 2mm. The reinforcement is made of 30CrMnSiA forgings with a thickness of 2.5mm. , the method for the vulcanized bonding strength of the natural rubber elastic part and the metal reinforcement part of the flexible joint, comprising the following steps in turn:

[0045] 1) According to the design requirements of the flexible joint structure, the metal reinforcement is processed into a metal sheet of δ2.6×20×65 (mm), and the natural rubber elastic part is cut into a δ2.2×20×65 (mm);

[0046] 2) Sandblast the metal plate on both sides. Before sandblasting, put the metal plate into acetone to clean it to remove surface oil. After sandblasting, the surface is required to be evenly fluffed to reveal the metallic luster;

[0047] 3) Put the sandblasted ...

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Abstract

The invention provides a method for improving the vulcanization bonding strength of a natural rubber elastic element and a metal reinforcing element of a flexible joint. The method for improving the vulcanization bonding strength of the natural rubber elastic element and the metal reinforcing element of the flexible joint includes the following steps: 1, shearing the natural rubber elastic element and the metal reinforcing element into set shapes according to the structural requirements of a designed flexible joint; 2, performing sand blasting treatment on the double surfaces of the metal reinforcing element; 3, cleaning the metal reinforcing element by acetone for 2-3 times, and drying after cleaning; 4, coating a certain amount of Chemlok CH-205 adhesive to the surface to be bonded of the metal reinforcing element; 5, then coating a certain amount of Chemlok CH-220 adhesive to the surface to be bonded of the metal reinforcing element; 6, bonding the metal reinforcing element with the natural rubber elastic element at intervals; and 7, at last putting the compound of the natural rubber elastic element and the metal reinforcing element into a vulcanizing machine for vulcanizing. In testing, the flexible joint bonded according to the method provided by the invention is high in bonding strength, and stable and reliable in bonding quality; the method can be applied to similar products in which natural rubber and metal parts are subjected to vulcanization bonding.

Description

technical field [0001] The invention belongs to the technical field of flexible nozzle devices of solid rocket motors, and specifically refers to a method for improving the vulcanized bonding strength between a natural rubber elastic part and a metal reinforcement part of a flexible joint of a flexible nozzle. Background technique [0002] The solid rocket motor is the power device of the aerospace vehicle, which is composed of a charge combustion chamber, a nozzle and an ignition device. The flexible nozzle is a kind of movable nozzle commonly used in the nozzle of solid rocket motor. [0003] The flexible nozzle is composed of three major parts: movable body, fixed body and flexible joint. The flexible joint is the key part of the flexible swing nozzle of solid rocket motor. The blue body is bonded. The executive part of the nozzle swing is a flexible joint. The working environment of the swing nozzle requires that the flexible joint not only have the ability to resist a...

Claims

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Application Information

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IPC IPC(8): B29C65/52B29C35/02
Inventor 钟臻荣宴述亮王华东韩庆波
Owner 湖北三江航天江北机械工程有限公司
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