A paint industry customer recently purchased our HZ PLUS 30L bead mill machine and was able to increase the efficiency of grinding black pigment by more than double. In this case study, we will analyze the extent of this improvement.

The customer’s previous 30L bead mill machine required 6 grinding cycles to achieve the desired fineness of 10 μm. With the HZ PLUS-30L bead mill machine, the customer was able to achieve the same fineness with only 4 grinding cycles. The material weight and grinding time remained constant at 500 kg and 24 hours, respectively.

Value Analysis: To accurately calculate the value difference between the two machines, we use the value-for-money ratio V defined as: the value obtained by the buyer for every USD 1,452 invested. The value-for-money ratio is calculated using the following formula: V=Q/C+0.1P where Q is profit (output), C is total cost including electricity, vulnerable parts and labor costs, and P is product price divided by service life n (calculated as 10 years).

Conclusion: Using this formula, we calculated the value-for-money ratio of the old and new bead mill machines. Assuming a product price of USD 7,263 per ton and a production cycle of 200 days per year with 8 hours per day, continuing to use the old equipment would result in a loss of USD 244,043 in annual output value and USD 2,440,430 over a period of 10 years.