This
article offers five questions to ask your mixer provider.
The global economy continues to fuel pressure for adhesive
and sealant companies to adopt energy-efficient production methods. Some
forecasts have energy consumption increasing up to 20% over the next 15 years.
Given that the industrial sector consumes an estimated 30% of all energy in the
U.S.,
it’s no wonder that manufacturers struggle to deliver products on shorter
timelines with tighter batch consistency.
While searching for process inefficiencies, plant operators often overlook a
key source of energy consumption: mixing equipment. This is because mixers,
unlike pumps and other capital equipment, can run for a decade or more with
only scheduled maintenance. A mixer’s job, ultimately, is to operate as
designed while maintaining output and energy costs.
Like process requirements, technologies change - and mixers are no exception.
Mixing equipment has benefited from improved R&D, mixing analysis tools and
fabricating techniques. Today’s mixers are designed to improve throughput and
quality, and to significantly reduce energy consumption, lowering overall costs.
Energy and cost savings, however, are dependent on the quality of the mixer’s
design and the compatibility of the mixer with its application, both of which
are largely determined by the mixer’s manufacturer. Process optimization and
reliability are paramount to overall performance, including batch-to-batch
consistency and improved dispersion. Engineers and plant operators are likely
to buy a mixer based on the specifics of its design, usage, proven lifespan,
and ability to meet output demands.
Procurement specialists, however, must answer to the company’s bottom line.
While recognizing the importance of function and reliability, they are more
likely to make price a significant factor in mixing equipment decisions. The
result, unfortunately, is often a compromised investment in mixing technology
that fails to meet either department’s long-term needs, even though both are
working toward the same goal. But it doesn’t have to be that way.
Compromise is Not Necessary
In today’s complex market, compromise is no longer a
requirement. Thanks to improved technology and better business models, mixer
manufacturers are tailoring products and services to address the entire plant’s
needs. This means that adhesive and sealant manufacturers now have access to
mixers designed specifically to handle medium- and high-viscosity compounds,
high-velocity mixers used to prevent materials from skinning over on the tops
of tanks, and mixers designed to achieve consistent velocity along the mixing
wall. Today’s mixers are also thorough enough to reduce the amount of time
spent cleaning the tank between batches.
The ultimate solution is no longer a question of design over price or vice
versa; it is a matter of partnering with an equipment vendor that provides
custom design and engineering while measurably reducing the total cost of
ownership. Such dynamics add another level of importance to the
vendor-selection process. To help ensure that your next mixing equipment
purchase satisfies all key decision-makers, make sure the vendor can answer the
following questions.
- How can I ensure that a new mixer will improve my
processes? All mixing-solution providers promise process
optimization, but few can describe exactly how or to what degree. This is
because they do not know the specific processes and product characteristics
they are looking to improve. They are selling an off-the-shelf mixer tested
under general conditions. For vendors to answer the optimization question
truthfully they must:
- Take the time to understand your processes and challenges early in
the sales cycle,
- Simulate your exact mixing requirements,
- Test those exact conditions on a scalable, repeatable basis,
and
- Either select a mixer from the available product line that meets the
requirements or design a new one that will.
Your mixing-solutions partner should provide scale-down/scale-up test services
that examine power and torque levels, along with geometric ratios and impeller
design. Without this testing capability, mixer providers are making promises
based primarily on generalities and guesswork. Such inattentiveness often
results in additional mixer downtime because the installed mixer is not
operating at top efficiency or, in time, it no longer processes what it was
originally designed to mix. That’s no way to build trust.
- What should I look for in the mixer guarantee?
Most mixing-solutions providers offer some kind of guarantee; the danger,
however, lies in the fine print, which exonerates the provider from failures
based on variables in your process. A mixing partner should back up all
mechanical components of its mixers. If the partner has properly tested and
analyzed your specific process prior to recommending a mixer, the guarantee
will be far more useful and reliable in your specific environment.
- How do I ensure compliance with quality standards?
ISO 9000 is generally accepted as the quality standard for industrial mixers.
When it comes to weighing costs against performance, however, both procurement
departments and engineers/plant operators should expect more. Look for a mixing
partner that not only complies with ISO 9000 but Nuclear Quality Assurance
(NQA-1) standards as well. NQA-1 standards help maintain the safety of the U.S. nuclear
industry by mandating the highest possible quality. If your partner’s mixers
meet NQA-1 standards, you can be certain that you’re investing in reliable
products and that those products have been through the most rigorous testing
and assembly audits available. Your mixing partner should be able to provide
traceable quality data to verify compliance to all standards.
- How reliable are your mixers? Along with
a mechanical component guarantee, any mixing partner should provide a
reliability and performance guarantee based on the design’s operation in
specific test environments, including product quality, product throughput,
energy savings, elimination of unplanned downtime and reduction of scheduled
maintenance. Ideally, the vendor will have a plan in place to manage and
maintain the mixer’s health throughout the equipment’s lifespan. That plan
should include 24-hour on-call service with engineers who can answer questions
and respond to emergencies, and a guarantee that, in the event of an unexpected
incident, you’ll be back in business within 24 to 72 hours.
- Can you repair and maintain my existing mixing
equipment, even if another vendor manufactured it? This question
is especially relevant for procurement personnel who maintain vendor
relationships. Those who work with multiple mixing vendors and local gear
repair shops must deal with the hassle of multiple service contracts,
turnaround times and prices - the coordination of which wastes precious
resources and can result in unplanned downtime that devalues the investment in
the technology. A mixing-solutions partner should service all equipment brands
with guaranteed turnaround time regardless of make or model. You can plan for
predictive and preventative maintenance and respond quickly to unplanned
interruption of your processes.
Manufacturers must focus on stabilizing output, guarding against batch-to-batch
contamination, improving efficiencies and maintaining profit margins - not on
internal battles of procurement vs. engineering or sticker price vs. quality.
By working with a mixing solutions provider that can design a solution specific
to your needs and processes, companies can ensure that their mixing equipment
meets the needs of both engineers/plant operators and procurement departments -
and, most importantly, customers and shareholders.
For more information, visit www.philadelphiamixers.com.Links