Machining method of rubber composite gasket provided with metallic framework and forming mould

A metal skeleton and composite gasket technology, used in household appliances, other household appliances, household components, etc., can solve the problem of insufficient bonding strength between metal skeleton and EPDM rubber, and achieve improved stability and service life. Adhesive strength, the effect of improving the adhesive strength

Inactive Publication Date: 2020-06-02
南京金三力橡塑有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the insufficient bonding strength between metal skeleton and EPDM composite gasket i

Method used

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  • Machining method of rubber composite gasket provided with metallic framework and forming mould
  • Machining method of rubber composite gasket provided with metallic framework and forming mould
  • Machining method of rubber composite gasket provided with metallic framework and forming mould

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] In this embodiment, the specific steps for processing the composite gasket 100 using the aforementioned molding die 200 are as follows:

[0054] Step 1. Preparation of metal skeleton and rubber

[0055] S1. The metal material is: 45# steel, the raw material of the metal skeleton with a thickness of 1mm, the semi-finished product is prepared through the stamping process, and then the metal skeleton is obtained through vibrating and electroplating treatment, wherein the surface of the metal skeleton needs to be nickel-plated, and the nickel content is 12%, coating thickness is 8um.

[0056] S2. Clean the metal frame with gasoline and dry it. Use spraying method to coat CH205 adhesive on the surface of the metal frame and dry it at 23°C for 0.75 hours. Then apply RC202 adhesive on the coating of CH205 adhesive. C to dry for 0.75 hours.

[0057] S3. According to the size of the forming mold 200 ; use a rubber cutting machine to cut the rubber material of the composite gas...

Embodiment 2

[0064] In this embodiment, the thickness of the metal skeleton in step S1 is 1.3mm, the nickel content is 16%, and the coating thickness is 20um.

[0065] In step S2, the surface of the metal skeleton is coated with CH205 adhesive, and dried at 20° C. for 0.5 hours, and then coated with 233X adhesive on the coating of CH205 adhesive, and dried at 20° C. for 0.5 hours.

[0066] In step S3, the rubber material is specifically composed of the following components by mass fraction: 55 parts of EPDM raw rubber, 2.5 parts of zinc oxide, 0.1 part of stearic acid, 10 parts of fast extruded carbon black, 4 parts of semi-reinforcing carbon black 1 part, 3 parts of precipitated silica, 5 parts of calcined clay, 1 part of active agent, 0.05 part of silane coupling agent, 0.1 part of comaron, 1 part of anti-aging agent, 1 part of accelerator, 2 parts of vulcanizing agent.

[0067] In step 3, the vulcanization temperature of the vulcanizer is controlled to be 170°C, the vulcanization time i...

Embodiment 3

[0069] In this embodiment, the thickness of the metal skeleton in step S1 is 1.5mm, the nickel content is 18%, and the coating thickness is 25um.

[0070] In step S2, the surface of the metal skeleton is coated with CH205 adhesive, and dried at 30°C for 1 hour, and then coated with RC202 adhesive on the coating of CH205 adhesive, and dried at 30°C for 1 hour.

[0071] In step S3, the rubber material is specifically composed of the following components by mass fraction: 60 parts of EPDM raw rubber, 3.5 parts of zinc oxide, 0.5 parts of stearic acid, 15 parts of fast extruded carbon black, 8 parts of semi-reinforcing carbon black 7 parts of precipitated silica, 7 parts of calcined clay, 3 parts of activator, 1.2 parts of silane coupling agent, 0.5 parts of comaron, 2 parts of anti-aging agent, 2 parts of accelerator, and 5 parts of vulcanizing agent.

[0072] In step 3, the vulcanization temperature of the vulcanizer is controlled to be 170°C, the vulcanization time is controlle...

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Abstract

The invention discloses a machining method of a rubber composite gasket provided with a metallic framework and a forming mould and belongs to the field of rubber product machining. The machining method of the rubber composite gasket provided with the metallic framework comprises the steps that before the metallic framework is placed in a mould cavity, a layer of first adhesive is painted on the surface of the metallic framework first and dried, and then a layer of second adhesive is painted on a first adhesive coating and dried; the first adhesive coating is bonded to the metallic framework mutually, a second adhesive coating is bonded to rubber, the first adhesive coating and the second adhesive coating adhere to each other mutually, accordingly, the bonding strength between the metallicframework and the rubber is improved, therefore, the stability of the composite gasket in the using process is improved, and the service life of the composite gasket in the using process is prolonged.The forming mould provided by the invention is used for machining and preparing the composite gasket, mould cores are moved simultaneously after machining, composite gaskets in multiple mould cavities are ejected out simultaneously, and accordingly, the composite gaskets are convenient to demould.

Description

technical field [0001] The invention relates to the technical field of rubber product processing, and more specifically relates to a processing method and a molding die for a rubber composite gasket with a metal skeleton. Background technique [0002] Rubber and metal are two materials with different properties. Combining the two materials as a composite gasket can give full play to the respective advantages of rubber and metal and achieve the effect of "1+1>2". Among them, the rubber in the composite gasket mainly plays the role of vibration reduction and deformation, and the metal mainly plays the role of transmitting load and balancing load. This kind of composite gasket is widely used in some industrial fields, such as the automobile industry, machinery manufacturing industry field. However, due to the limitation of domestic production technology, the production efficiency of composite gaskets combined with rubber and metal is low, the scrap rate is high, and the pro...

Claims

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Application Information

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IPC IPC(8): B29C65/52B29C33/00B29C35/02B29C33/44B29C37/02B29L31/26B29K23/00
CPCB29C65/52B29C66/742B29C33/0022B29C35/02B29C33/44B29C37/02B29L2031/265B29K2023/16
Inventor 徐海潮何志刚魏二楼金国秋
Owner 南京金三力橡塑有限公司
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