my e-mail: ts_dz@faw.com.cn

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Yes, start identify why anything went down. Found possible solution for them. Then prioritize which one to solve. Make sure to look for interfere and interaction between your solution. Sometime you fix a few problems, sometime you'll create a few more.

we make forging parts, very big machine, long line, the proceses include shearing, heating, forging, trimming , padding, then transfer to heat treatment workshop to do heat treatment and shotblasting and then to QA Dept. with final inspection.

So your company is involve specially on forging process.

Did you identify which parts of the processes did you encounter the big downtime?

I guess mechanical & electrical downtime normally occur on the first process (puging machine) since your productivity is just 37% (this is very low productivity for me in one manufacturing co.), because you are using a high temperature in order to do the purging process, the machine or some parts of the machine cannot accomodate the long run or your long production, in which it causes additional downtime on the next process if the first process down. If you have the record or the reason of your frequent breakdown, the same thing with the comment of Milo, you must identify the biggest contributory factor (thru Pareto chart) and from it thru the support of all your group (from operator,tech'n, leader, qc up the involved in the process) you can have a open discussion lets say you can make a fish bone diagram and you can get each member suggestion/improvement/action plan & preventive action.

Note: if you can send me some detail breakdown may be I can help a little

Thanks,

Larry