Key criterion for grouping machines in process layout is Material flow Facility cost Machine function Product sequence

The key criterion for grouping machines in a process layout depends on several factors:

1. Material Flow: This refers to the sequence of operations that the material undergoes from the time it enters the plant until it leaves as a finished product. Machines should be grouped in a way that optimizes the flow of materials, reducing the time and cost of moving materials between different machines.

2. Facility Cost: The cost of the facility, including the cost of machines, space, and utilities, is also a key consideration. Machines that are expensive or require special facilities might be grouped together to minimize costs.

3. Machine Function: Machines that perform similar functions or are part of the same process might be grouped together. This can make it easier to manage and maintain the machines, and can also make it easier for workers to operate the machines.

4. Product Sequence: The sequence in which different products or parts are produced can also affect how machines are grouped. Machines might be grouped based on the sequence of operations required to produce a particular product or part.

In conclusion, the key criterion for grouping machines in a process layout can vary depending on the specific circumstances and requirements of the manufacturing process. It's important to consider all of these factors when designing a process layout.

The key criterion for grouping machines in a process layout depends on several factors:

1. Material Flow: This refers to the sequence of operations that the material undergoes from the time it enters the plant until it is transformed into a product. Machines that are involved in similar stages of material transformation are grouped together.

2. Facility Cost: The cost of the facility can also influence the grouping of machines. Machines that are expensive to move or install are often grouped together to minimize costs.

3. Machine Function: Machines that perform similar functions are often grouped together. This makes it easier to manage and maintain the machines, and it can also improve efficiency by reducing the time it takes to move materials from one machine to another.

4. Product Sequence: This refers to the order in which different stages of production are carried out. Machines are often grouped in a way that reflects the product sequence, which can help to streamline the production process and reduce the time it takes to produce a product.

In conclusion, the key criterion for grouping machines in a process layout can vary depending on the specific circumstances, but it often involves considerations related to material flow, facility cost, machine function, and product sequence.