Monday, April 2, 2007

SMT production line

Hello everyone!

I decided to present our SMT production line at Iskra Avtoelektrika. I work in Electronic BME department. We make DC and AC controllers for various types of forklifts, electrical vehicles, boats and other car industry. We also make electronics controllers for brushless motor. (SMT – surface mount technology)

Our production line is in EPA area. This is Electrostatic discharge Protected Area. In our production line we work with ESDS – ElectroStatic Discharge Sensitive elements (processor, chip, mos-fet and others). So we have specially prepared production area for work. We have also white overall frock with tiny conductor wire in it. When we work with small and very sensitive elements, we have also electrostatic discharge wrist strap which is conected into EBP – Earth Bonding Point.

At the entrance we have test instrument. It is wrist strap and footwear tester, which performs a quick test to assure whether wrist straps and footwear are conductive within acceptable limits.

Before this tester is “material preparing” department. Here we open all non electrostatic discharge packages and separate them. Material with ESDS packages we later import to EPA area where is placed automatic storage.

We work with SMD and discrete electronic components. SMD components we place on the circuits with automatic machines, but discrete components we place manually. I decided to present only automatic part of our production line.

Our production line start with material preparing and after that we have first machine which grease circuit surface with soldering paste. We have a template for each type of controller. Then we have two pick and place SMT machines.

We bought new machine last week which would be used for making VIMEC controllers. This is controller in electrical vehicle for invalids that they can go up stairs. Watch the video presentation of this P&P machine.

After this two pick and place (P&P) machines we have reflow oven. Here soldering paste melts and solder elements with pads on PCB board. After this we have optical control machine calls “AOI”. This machine visually controls whole board and checks if elements are in right position or orientation. It also checks value of elements. If everything is ok, here is another operation. Discrete elements. We put it on the PCB board manually. After this operation we have automatic soldering with wave.

This machine solder all discrete elements. After that operation, we have eye control of controllers. At this operation we soldering wires and other stuff.
Finally here is electrical control. We have simulators of forklifts and we control each controller. At the end we lacquering good controllers with another and the last one automatic machine.

After those operations we have also assembly line where we compose controllers. Finally we have 100% control place where we have forklift and we control if controller work properly. With AC controllers we make also burn test. We charge controllers with current of 300A and wait until controller has 80°C. We watch eventual changes and errors with thermal camera.

At the end we pack controllers into ESD package. That`s all folks!!!


Saša said...

Dear Matej,
Congratulations! You are the first student to post to our blog. Thank you very much for sharing your detailed description of Iskra SMT production line. I have been learning a lot from you this year. It’s fascinating to observe the efficiency and precision of the pick and place machines. They must have improved the manufacturing process dramatically. You seem to enjoy your workplace and the high-tech atmosphere permeating your company. I'm looking forward to reading more.

Nina said...

Dear Matej,

Your information about Iskra SMT production line seems very good and rather informative. Thank you for the good job you've done.

The best of luck!

Nina Lyulkun

Igor P said...

Hi Matej,

this was very interesting reading.
Thanks for sharing.

Igor P

Daniel said...

A good Seller of vacuum electronics and now also ESD Products is Allpax

Hope thats no spam, cause you link at warmbier.

Bill said...

We haven't heard of the Iskra SMT line. Since it is new I'd imagine there is no used equipment out on the market yet? If so, here is a resource that has used SMT & used PCB machines - find it at it may be a great way to get exposure for this.

Prosem Technology India Pvt. Ltd. said...

We are independently recognized and leaders in manufacturing of electronic equipment like SMT Pick & Place Equipments. We offers our customers end-to-end development and manufacturing solutions