SMT Disasters

Yeah, I burned my Pop-Tarts* this morning. Someone turned the knob on the cafeteria toaster oven. Gotta check them knobs no matter where ya go.

(* = Poster has no affiliation with Pop-Tarts or Pop-Tarts products)

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Well if something like that had to happen, at least it didn't happen with expensive parts.

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I have a wall of shame in my office. If someone does something stupid that damages equipment or parts I hang them on the wall to Embarrass them for their entire employment. sounds like you should hang these pictures on your oven to remind people what could happen, take a picture of the dummy that did this and hang it next to the picture of the parts! bet it wont happen again.

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What??? Those parts are fiiiiiine. You just need a slightly more aggressive flux. Sheesh. What's the big deal? I've gotten worse parts from a broker and had to make them work.

(Ow. I planted my tongue so firmly in my cheek that it hurts)

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There are temperature controllers that can be configured for a "safety stat" mode, so they blow a fuse to the main heater control if it goes, say, 10C or some reasonable fluctuation above the setpoint. It might be a VERY reasonable thing to add to your bake cabinet before you put it back on line. What you want is a TOTALLY independent control, with a separate sensor, power supply, etc. from the main control. If you don't like blowing fuses, you could put a big motor contactor in series with the main power to the oven, and have the safety stat drop out that contactor on overtemp.

Jon

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We have an entire Industrial Eng crew that come in 2.5 hours after everyone starts work and leave 30 minutes after everyone leaves (that�s like having 65 extra working days off each year!). In that 30 minutes they take picture of what they think are defects and tape them on the Line Information Boards. No one can determine what it is they are trying to point out in their pictures, since they hide in their offices all day. Usually by the time they come in we are building something else or have other concerns besides their 8 X 11 glossy pictures (they must have a really nice printer some where). Plus the fact they usually post a new picture about 22.5 days on average, so the pictured product they post is usually 30-40 work orders in our past.

This may not be a SMT Disaster but sure is a work ethic disaster. Especially since we have no line rates, ergonomics, manufacturing production control, simulation analysis, optimization, or economic analysis. I guess I�m used to having Industrial engineering as a diverse discipline with many areas of specialization.

They do wear stop watches around their necks when they get coffee�� guess that�s something.

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