Page 36 - Metalforming Magazine April 2022

will reduce overall emissions and boost your ESG score.
Synthetics work well in reclamation, and many are available. Prior to pur- chase of any lubricant, a metal former should inform the lubricant supplier of its desire to reclaim and reuse. This will allow the supplier to include the proper biocide additives to minimize biological growth, which can prove harmful to the product and to the peo- ple using it.
Importance of Delivery Systems to Reduce Emissions
The delivery and application of lubricants also impacts Scope 1 emis- sions. Tour your shop floor and identify misplaced lubricant—puddles on the floor or on machinery, and excess spray in the air, for example. Making improvements in these areas can sub- stantially reduce lube consumption and lower your carbon footprint.
Spray nozzles can help ensure pre- cise lubricant application as they can regulate the amount of lubricant and
alter the shape of the spray. Pinpointing spray location can minimize overuse and ensure proper functionality. In addition, a state-of-the-art delivery sys- tem automatically manages spray tim- ing and volume, and allows storing of the process recipe by part number to ensure repeatable processes. As many as 24 nozzles can be programmed inde- pendently to deliver lube and air, or even skip cycles on these systems.
These recipes can be password-pro- tected to eliminate any potential of unauthorized adjustments by operators. Operators often will adjust lube-system parameters to increase spray volume when parts do not properly form or fail to release from the die. However, in many cases close examination of the process may indicate the real cause of the issues: an improper dilution ratio or a nozzle failing to spray correctly.
Also, consider that nozzles often become obstructed due to lack of maintenance. Be sure to regularly purge the lines and nozzles. Also, use flow meters to aid in indicating under
or over utilization of lube. If using a water-based lubricant, have your water tested for hardness to prevent a buildup of calcium, which will restrict line size, cause volume issues and potentially block lubricant dispensing.
Automate Lubrication for Precise Spraying
Application automation also helps metal formers ensure consistent lubri- cant application. While many facilities still task their operators with hand- spraying lubricant into their dies, hav- ing operators spend long hours work- ing press-side only equates to over or under coverage—and very tired arms. Although not covered by these three GHG scopes, worker safety and well- being is an ESG initiative.
One popular automation solution: a reciprocator machine, which extends the lubricating nozzle into the die area and accurately layers the target zone with lube. It even can blow air sepa- rately to remove debris. Another option: Outfit a robot or cobot with a
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34 MetalForming/April 2022
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