Dry ice cleaning method

A technology of dry ice cleaning and dry ice, applied in the direction of cleaning methods and appliances, chemical instruments and methods, etc., can solve the problems of time-consuming, labor-intensive, time-consuming, increased maintenance costs, etc., to improve cleaning efficiency, broad market prospects, save disassembly and assembly the effect of time

Inactive Publication Date: 2018-04-06
张青竹
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When cleaning with mold cleaning strips, mold cleaning strips or mold washing water, it is necessary to heat the mold first, press the mold cleaning strips into the groove of the mold, and use the mold cleaning strips to stick the dirt on the surface of the mold and take it out. For some difficult-to-clean corners on the mold, in addition to using mold cleaning strips, mold cleaning strips, mold strips or mold washing water, alkaline chemicals are used to clean the mold. When cleaning the mold with the above method, the mold needs to be disassembled , Dismantling a set of molds is not only time-consuming and labor-intensive, but also easily causes damage during the disassembly process. The cost of a set of molds is tens to several million, and

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0018] A dry ice cleaning method includes the following steps:

[0019] Step 1: Heating the mold to be cleaned;

[0020] Step 2: Obtain a corresponding amount of dry ice from the dry ice storage place according to the degree of dirt on the surface of the mold to be cleaned;

[0021] Step 3: Hold the cold spray gun, press the button of the cold spray gun, aim the nozzle at the dirt surface of the mold to be cleaned, spray dry ice particles, and make the dirt on the surface freeze sharply to brittle and burst.

[0022] Wherein, the mold to be cleaned is any one of a semiconductor packaging mold, an optoelectronic mold, and a microelectronic mold. The barrel of the cold spray gun can be lengthened according to the actual cleaning needs of the mold to be cleaned. The length of the straight section of the barrel is 25cm-40cm. The end of the barrel of the cold spray gun near the nozzle can be bent into different angles. In order to adapt to the cleaning of different dirt (material adhesion...

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PUM

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Abstract

The invention belongs to the technical field of die cleaning, and particularly relates to a dry ice cleaning method. A cold spraying gun is utilized for spraying dry ice particles to dirt on the surface of a to-be-cleaned die, the length of a barrel of the cold spraying gun can be increased, and the end, close to a nozzle, of the barrel of the cold spraying gun can be bent to different angles so that the cold spraying gun can adapt to clean different dirt positions of the to-be-cleaned die. The method is applicable to cold spraying guns of nozzles different in type, specification and material.According to the dry ice cleaning method, the low-temperature impact condition of dry ice is utilized, a dirt layer is swept and peeled off, and dirt is removed.

Description

technical field [0001] The invention relates to the technical field of mold cleaning, in particular to a dry ice cleaning method. Background technique [0002] In the prior art, mold washing strips, mold cleaning strips, mold moistening strips or mold washing water are generally used to clean semiconductor packaging molds, integrated circuit ICs, LEDs, and packaging systems. When cleaning with mold cleaning strips, mold cleaning strips or mold washing water, it is necessary to heat the mold first, press the mold cleaning strips into the groove of the mold, and use the mold cleaning strips to stick the dirt on the surface of the mold and take it out. For some difficult-to-clean corners on the mold, in addition to using mold cleaning strips, mold cleaning strips, mold strips or mold washing water, alkaline chemicals are used to clean the mold. When cleaning the mold with the above method, the mold needs to be disassembled , Dismantling a set of molds is not only time-consumin...

Claims

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Application Information

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IPC IPC(8): B08B7/00
CPCB08B7/00
Inventor 张青竹
Owner 张青竹
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