Handling

Once the part has been compacted, it must be removed from the die table. In some cases the part slides onto or is picked up and placed onto a belt or some conveyance that delivers it directly to the sintering furnace. This may not involve direct operator intervention, but inspection should be done on a periodic basis. If bad parts are being produced, they can be isolated from those parts going into the furnace to avoid contaminating the good with the bad. It is possible that the parts could have some form of automatic inspection for weight or size or both. Parts could be monitored by the press system itself, and bad parts could be rejected off to a side.

If the parts are left to slide into a container or onto a staging table or system, care must be taken to see that physical damage such as chips or cracks does not occur. If the part is of a "C" shape, care must be taken to ensure that there is no way that the opening in the "C" can be reduced or squeezed in. That can produce a variation in "die" shape. Large and heavy parts, particularly those with small projections that could be struck, are more susceptible to handling impact than small, lightweight parts. Care must be taken if the operator has to pick up a C-shaped part, as squeezing it can cause dimensional changes or cracking (Fig. 13).

From the die

Possible crack as handled

Fig. 13 Distortion of C-shaped part

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