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Hardware shell linear dispensing sand blasting technology

A straight-line point, hardware shell technology, applied in adhesives, coatings, adhesive additives, etc., can solve the problems of only 20% yield, protection measures, failure to meet quality requirements, etc., to improve yield and enhance protection. Effect

Inactive Publication Date: 2017-08-11
东莞市华茂电子集团有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] After the metal shell has been polished, there is no perfect protection measure for the bright edge, and PE protective film is used to cover and protect it.
After sandblasting in the post-process, the defect rate of bright edges is high, which cannot meet the quality requirements
Products produced by current technology have a yield rate of only 20%

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The present invention will be described below in conjunction with specific embodiments.

[0017] A straight-line dispensing and sandblasting process for metal shells, comprising the following steps:

[0018] Step 1: Polish the polished edge of the product first;

[0019] Step 2: Position the polished product with a jig;

[0020] Step 3: Dispensing glue on the polished edge with special glue;

[0021] Step 4: Curing the glue with a baking oven;

[0022] Step 5: Sand blast the product after the glue has cured.

[0023] Further, the composition of the special glue in step three is as follows: 93% unsaturated acrylic resin, 1% photoinitiator, 2% thixotropic agent, 2% thickener, 1% reactive diluent, diphenyl Methyl ketone 1%.

[0024] Further, the thickener is pyrogenic silica.

[0025] Further, the dispensing in the third step requires keeping a straight line.

[0026] Furthermore, the temperature for curing the glue in step 4 is 50-70 degrees, and the time is 25-35 ...

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PUM

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Abstract

The invention discloses a hardware shell linear dispensing sand blasting technology. The technology comprises following steps: firstly, a polishing side of a product is subject to glossing; secondly, a jig is used for positioning a polished product; thirdly, special glue is used for dispensing the polishing side; fourthly, a baking chamber is used for carrying out curing treatment on the glue; fifthly, the product obtained after glue curing is subject to sand blasting, wherein the special glue in the third step comprises, by weight percent, 93% of unsaturated acrylic resin, 1% of a light initiating agent, 2% of a thixotropic agent, 2% of a thickening agent, 1% of an active thinning agent and 1% of benzophenone. Protection of the polished side can be reinforced, the backward-processed sand blasting technology does not affect the polishing effect, and the product yield is improved.

Description

technical field [0001] The invention relates to the technical field of sand blasting, in particular to a metal shell linear dispensing sand blasting process. Background technique [0002] After the metal shell is polished, there is no perfect protection measure for the bright edge, and it is covered and protected with PE protective film. If the viscosity is too high, there will be residual glue, and the bright edge will be scratched when handling; if the viscosity is too low, it will fall off easily and will not play a protective role. After sandblasting in the post-process, the defect rate of the bright edge is high, which cannot meet the quality requirements. The yield rate of products produced by current technology is only 20%. Contents of the invention [0003] The object of the present invention is to provide a metal shell linear dispensing and sandblasting process for the deficiencies of the prior art. The metal shell linear dispensing and sandblasting process can ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B1/00B24C1/00B23P15/00C09J133/00C09J11/04C08K3/36B05D7/14B05D3/02
CPCB24B1/00B05D3/02B05D7/14B23P15/00B24C1/00C08K3/36C09J11/04C09J133/00
Inventor 王金华谢国龙
Owner 东莞市华茂电子集团有限公司