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Production process for ultrathin shielding case

A production process and shielding cover technology, which is applied in the production process field of ultra-thin shielding covers, can solve problems such as poor shielding effect and uneven particles, and achieve the effects of consistent shrinkage ratio, reduced energy consumption, and guaranteed service life

Active Publication Date: 2017-05-31
北京智崴科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention overcomes the deficiencies of the prior art, provides a process method for producing ultra-thin shielding covers by using a suitable formula ratio and particle filtration method, and solves the problem of shielding caused by uneven particles in the existing ultra-thin shielding covers. The problem of poor performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A production process of an ultra-thin shielding cover, comprising the steps of:

[0031] (1) Proportion the raw materials and stir them evenly. Step (1) comprises: (11) using a kind of nickel nickel or zinc tin nickel alloy as raw material, adding zinc stearate in raw material, the mass ratio of zinc stearate and nickel nickel is 0.3%; (12) in On the basis of step (11), glue is added in the raw material, and the mass ratio of glue and nickel-nickel nickel is 0.4%, and powder is formed; (13) the powder is stirred evenly, and the particle size in the powder is filtered out with a coarse filter. For particles of 0.1mm, use a fine filter to filter out particles with a particle size of less than 0.06mm in the powder.

[0032] (2) Place the stirred raw material in a mold, and sinter the raw material to form a shielding cover blank.

[0033] (3) Turning the inner hole, flanging, trimming, polishing and cleaning the blank of the shielding cover in sequence to obtain a finishe...

Embodiment 2

[0036] A production process of an ultra-thin shielding cover, comprising the steps of:

[0037] (1) Proportion the raw materials and stir them evenly. Step (1) comprises: (11) using a kind of nickel nickel or zinc-tin-nickel alloy as raw material, adding zinc stearate in the raw material, the mass ratio of zinc stearate and nickel nickel is 1%; (12) On the basis of step (11), glue is added in the raw material, and the mass ratio of glue and nickel-nickel nickel is 1%, and powder is formed; (13) the powder is stirred evenly, and the particle size in the powder is filtered out with a coarse filter. For particles of 0.1mm, use a fine filter to filter out particles with a particle size of less than 0.06mm in the powder.

[0038] (2) Place the stirred raw materials in a mold, sinter and shape the raw materials to form a shield blank; use a kiln to sinter the raw materials, and an exhaust fan is installed on the kiln. The exhaust fan installed on the kiln helps to discharge the gl...

Embodiment 3

[0042] A production process of an ultra-thin shielding cover, comprising the steps of:

[0043](1) Proportion the raw materials and stir them evenly. The step (1) includes: (11) using nickel nickel or zinc-tin-nickel alloy as a raw material, adding zinc stearate to the raw material, and the mass ratio of zinc stearate to nickel nickel is 0.3%-1%; ( 12) On the basis of step (11), add glue to the raw materials, the mass ratio of glue and nickel-nickel nickel is 0.4%-1%, to form powder; (13) Stir the powder evenly, filter out with coarse filter For particles with a particle size larger than 0.1mm in the powder, use a fine filter to filter out particles with a particle size smaller than 0.06mm in the powder.

[0044] (2) Place the stirred raw materials in a mold, sinter and shape the raw materials to form a shield blank; use a kiln to sinter the raw materials, and an exhaust fan is installed on the kiln. The exhaust fan installed on the kiln helps to discharge the glue, etc. dur...

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Abstract

The invention relates to the field of shielding case production, in particular to a production process for an ultrathin shielding case, and aims at providing the process method for producing the ultrathin shielding case through an appropriate formula proportion and a particle filtering method. According to the technical scheme, the production process for the ultrathin shielding case is characterized in that the mass ratio of zinc stearate to a copper-nickel-zinc alloy is 0.3%-1%, the mass ratio of glue to the copper-nickel-zinc alloy is 0.4%-1%, and powder is formed; and a coarse filter is used for filtering particles with the particle size larger than 0.1 mm in the powder, and a fine filter is used for filtering particles with the particle size smaller than 0.06 mm in the powder. The production process solves the problem that at present, as particles for producing the ultrathin shielding case are not uniform, the shielding effect is poor.

Description

technical field [0001] The invention relates to the field of shielding cover production, in particular to a production process of an ultra-thin shielding cover. Background technique [0002] The shield is an alloy metal cover that is critical to reducing radiation from the display. There are electronic guns, high-voltage packs, circuit boards and other components inside the display. They emit high-intensity electromagnetic radiation when they are working. The shielding cover can play a role of shielding and block the electromagnetic waves in the absolute part in the cover, thus protecting users from being affected. The hazards of electromagnetic radiation, while avoiding interference to other electrical appliances around, to a certain extent, it also ensures that the components are free from dust and prolongs the service life of the display. It is mainly used in mobile phones, GPS and other fields. [0003] Shielding is the isolation of metal between two spatial regions to...

Claims

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Application Information

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IPC IPC(8): B22F1/00B22F3/10B22F3/24C23C10/44
CPCC23C10/44B22F3/1021B22F3/24B22F2003/242B22F1/10B22F1/14
Inventor 冯德国廖其荣侯金龙陈东毛明慧陶芙蓉
Owner 北京智崴科技发展有限公司
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