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#155 Production Technology Improvement Course for Mechanical Designers - 25: Soldering Robots and Production Technology

Category : Automation elements technology
April12, 2013

When trained experts perform soldering with "Soldering irons", they visually determine by seeing the soldered parts with expert eyes to assure a certain soldering quality.

■Example of solder expert's evaluation criteria
Expert's evaluation criteriaRelationship with the soldering
(1)Adequacy of preliminary solderingAdd solder if preliminary soldering has insufficient solder
(2)Reaction state of flux and solderEstimated time of soldering, and determination for cleaning timing of the tip
(3)Solder flow conditionDetermination of soldering iron tip temperature inadequacy, and estimation of soldering completion

-As shown in the table above, it is unavoidable that the soldering quality would vary with manual soldering processes due to varying expertise levels.
-Therefore, implementation of soldering robots is strongly desired. However, replacing works by trained experts is with difficulties production technologically. Especially to achieve stable quality for the mass production, the designer needs to understand the soldering related engineering in whole as explained in the Vol. 357, and implement proper process designs and working standards.
-Production technology needed for soldering robots will be explained with the soldering robot in [Photo 1].

a)Optimal selection of soldering iron tips against the object to be soldered
■Explanation
*Since heat conduction uniformity is required
*Since uniform pressure application is required on sections to be soldered
b)Solder supply method, position, amount
■Explanation
*Trained experts determine the size, amount, and application position of flux containing solder by soldering condition
c)Solder iron tip pressure application method and soldering time
■Explanation
*Pressure bonding direction and load, also soldering time are determined based on the shape of workpiece to be soldered

[Photo 1] Soldering robot

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