Question

In the welding operations of a bicycle manufacturer, a bike frame has a flow time of about 13.5 hours. The time in the welding operation is spent as follows: 1 hours waiting in front of the cutting machine for the batch to start, 2 hours waiting for the setup of the machine, 2 hour waiting for the other pieces of the batch to go through cutting. 2 minute at the cutting machine, and 3 hours waiting for the transfer to the welding machine. Then, at the welding machine, the unit spends 2 hour waiting in front of the welding machine for the batch to start, 2 hour waiting for the setup of the welding machine, 0.5 hour waiting for the other pleces of the batch to go through welding, 0.65 minute at the welding machine, and 1 hour waiting for the transfer to the next department.

Deteremine the exact flow time what is the value-added percentage of the flow time?

Answer 1

The exact flow time is the sum of all processing and waiting times involved in the welding operation of a bicycle frame. Only the direct cutting and welding times are considered value-added. The value-added percentage is calculated as the ratio of processing time to total flow time, expressed as a percentage.

Step-by-step explanation:

To calculate the exact flow time for a bicycle frame in the welding operation, we need to sum up all the individual time components mentioned. The operations include waiting and active times at each stage of the process. To determine the value-added percentage of the flow time, we need to separate the actual processing time from the waiting time and then calculate the ratio of processing time to the total flow time.

The flow time consists of the following: 1 hour waiting for cutting, 2 hours setup for cutting, 2 hours waiting for cutting others, 2 minutes cutting, 3 hours waiting for welding transfer, 2 hours waiting for welding to start, 2 hours setup for welding, 0.5 hour waiting for welding others, 0.65-minute welding, and 1 hour waiting for the next transfer.

Converting minutes to hours, we have 2 minutes as 2/60 hours and 0.65 minute as 0.65/60 hours. Summing all these times gives us the total flow time. The processing time will be the sum of actual cutting time and welding time. Finally, we calculate the value-added percentage by dividing the processing time by the total flow time and multiplying by 100 to get a percentage.