Automated Sample Preparation | Cut Impact, Save Time & Costs
Automated Sample Preparation | Cut Impact, Save Time & Costs
Human errors that occur in the lab can be a major issue, and even the most highly qualified personnel can have a bad day or be out sick, affecting the consistency of the outcome, when preparing samples for metallography. Automated systems help in significantly reducing these problems, and when we look at the scale of rework that’s required in these sample preparation steps, we see the results speak for themselves.
Large-scale manufacturing is well-suited for fully automated grinding and polishing systems. A well-rounded laboratory automation system is designed to cut costs and eliminate downtime, by processing multiple samples with basically no hands-on input. There’s a plethora of benefits that go beyond the reliability, the efficiency, and high accuracy. The results make for smooth procedures that don’t require expert intervention.
This also translates to higher confidence and a significant reduction in spend for companies, as the level of uncertainty is virtually guaranteed, or reduced to a minimum.
What is Metallography? Definition, Techniques & Industrial Applications
The need for human intervention is often eliminated, changing the way the lab operates, and reduces training costs, when preparing samples for a metallography lab. Sample throughput is greatly enhanced by automated sample preparation and with an average return on investment, which pays for the automation systems and then starts saving the laboratory money today.
Reducing Operator Dependency in Sample Preparation
Metallographic sample preparation remains a difficult task. Manual methods render results variable. Conventional metallography relies too heavily on operator technique to deliver precise, reproducible results—that causes numerous workflow bottlenecks.
Manual prep challenges in metallography workflows
The traditional way is to physically manipulate the samples against polishing surfaces, but this results in results that are unpredictable and time consuming, when preparing metallographic samples. As the operator makes fine adjustments, the outcome can be compromised by human error, skill, and fatigue, labour-intensive processes which also hamper productivity.
Coming up against several major issues, manual methods suffer from sectioning problems, which are caused by improper cutting tools and methods.
Basically, the cutting tool gets too hot and deforms the sample, altering the true microstructure of the material. Uneven pressure during polishing leads to irregular surfaces and time, as well as poorly managed labs tend to polish for too long thinking that more steps will give better results.
Manual preparation leads to the problem of overpolishing, lots of labs using 5 steps or more, but don’t know that they’re doing anything wrong, and end up rounding off the edges, pushing harder particles out of the way and getting rid of any non-metallic bits. Well-known in the industry, using fewer, more targeted polishing steps produces far better results in most labs.
Impact of human error on reproducibility
Concerning measuring, even a single mistake in the preparation process can make human errors and results that are less reliable. It’s like dropping a single grain of sand into a large container.
Porosity measurement is a clear example, research shows that apparent porosity can decrease to one-third of its original value in the final stages of preparation, basically because the way we prepare the sample can change the results.
Coming across residual damage is yet another challenge. Damage is not easy to detect, especially in intricate structures, components that are prone to damage and in the analysis of failures, and the level of damage that is present completely alters measurement results, and so consistent preparation is absolutely necessary.
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Problems arise in reproducing the results, when repairing or polishing surfaces. Coming back to the same spot, individuals will often put in extra time on softer cloths to remove the last bit of visible damage, and this is where the trouble starts. It gives rise to polishing relief, parts of the surface that polish at different speeds. Under the microscope, these areas look like dark lines. This phenomenon prevents accurate measurement and analysis.
Training overhead and skill dependency
Concerning achieving good metallography, laboratories require a significant investment of time and training. Full courses that teach the required skills can last anywhere from a few days to a week. These courses cover the fundamental steps of sectioning, mounting, grinding, polishing, optical microscopy, etching and hardness testing.
Advanced certification programs need students to finish structured courses in:
- Metallurgy basics and specimen preparation
- Microstructure interpretation
- Analytical methods
This training requires a great deal of time and funds. Yet even with training, automation provides critical advantages that skill alone cannot equal:
- Improved finish and flatness results
- Greater, more reproducible results
- Higher productivity with more specimens processed per shift
- No dependence on operator skill
Hardness Conversion Table: Cross-Scale Reference for Metallurgists
For metallographic analysis, laboratory automation systems are being used to overcome some of the issues that have long been a source of problems. One of the ways they’re doing this is by normalizing the processes and eliminating human variability. Automatic polishing systems can now take on a number of samples at a time, and can customise the rotation speed, pressure and time needed for each one. Coming hotfooting into the world of high-volume metallographic analysis, these consistent results are basically guaranteed, and that’s what makes the analysis so reliable.
Automation for Reproducible Metallographic Results
Recent automation technologies have transformed metallographic sample preparation. The developments have removed variability and increased consistency. Sophisticated systems now provide reproducible results with little or no human intervention, as compared to conventional methods.
Hands-off metallography using smart systems
When discussing the preparation of metallographic samples, intelligent metallographic systems are now able to cover the entire process from beginning to end. The Velox 102 represents this cutting-edge technology, and is the end-to-end grinding and polishing solution that modern laboratories require for consistent and repeatable results.
The Velox 102 minimizes the element of human error, that can lead to inconsistencies in results, and delivers a highly reliable method for laboratories. The intelligent system can be reloaded with consumables and specimen holders in a matter of less than five minutes and then runs almost autonomously, requiring the technologist to focus on higher-level work.
These smart systems are equipped with amazing features:
- Programmable memory holds personalized workflows
- Automatic adjustment of parameters according to sample properties
- Combined cleaning functionality with ultrasonic or high-pressure capability
- Complete data logging to confirm and enhance processes
These systems change metallographic preparation from an operator skill-dependent art to a standardized, repeatable science.
Operator-free sample prep with closed-loop control
When discussing the preparation of metallographic samples, intelligent metallographic systems are now able to cover the entire process from beginning to end. The Velox 102 represents this cutting-edge technology, and is the end-to-end grinding and polishing solution that modern laboratories require for consistent and repeatable results.
The Velox 102 minimizes the element of human error, that can lead to inconsistencies in results, and delivers a highly reliable method for laboratories. The intelligent system can be reloaded with consumables and specimen holders in a matter of less than five minutes and then runs almost autonomously, requiring the technologist to focus on higher-level work.
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Boosting Throughput with Laboratory Automation Equipment
Metallography laboratories nowadays simply have to examine more samples with the same or fewer personnel. Modern equipment converts this dilemma into an opportunity by doing more with current staff levels.
High-volume laboratory automation for faster cycles
For metallography, automated systems are changing the face of traditional workflows. Preparation time for a manual sample can take anywhere from 1-2 hours, whereas an automated system can cut that time down to approximately 25-45 minutes, effectively increasing the throughput of a laboratory by a staggering 60%. An increase that doesn’t require a need for more staff.
Reducing the time required for the individual phases, automation has seen drop times fall to 5-7 minutes from 10-15, mounting times to 10-15 minutes down from 30, and grinding and polishing now taking 20-30 minutes, up from a lengthy 1-2 hours.
For industries where high reproducibility is paramount, often large volume laboratory automation systems with programmable procedure settings and automated movements are chosen, enabling technicians to load a stack of samples, write out the preparation process and go, while the machine does its work.
Cutting machine automation for batch processing
It’s now very rare to see manual intervention, when cutting samples. The Servocut 602 AX-R, a four-axis cut-off machine, is basically the epitome of automated sample cutting for high-volume labs. Its intuitive controls and enormous rotating cutting table make the cutting process a piece of cake and eliminate the need for re-clamping.
Metallographic Mounting Machine | Optimizing Specimen Preparation
One of the main benefits of these automated systems is that you can choose the perfect feed speed to prevent sample deformation and get the best possible cutting angles. Built-in circulation systems keep the cutting zone at a safe temperature and dispose of any waste, and operators can pre-programme up to 99 different cuts, so that time-consuming setup is a thing of the past.
Sample throughput optimization with minimal stops
In the case of today’s laboratories, speed, reliability and a smaller workforce are key. Automation can make the most of the time we have available to us, and Servocut’s automatic metallographic cutting machine shows just that.
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The machine can tell when it’s finished cutting, halts the cutting process, and slowly retracts the cutting blade. It’s also got closed-loop systems that prevent overloading, and look out for overheating motors and electronics. Coming hotfooting through a job, the machine can change up the feed and cutting speeds mid-cut, if needed.
Standardization and Data-Driven Process Control
Looking at to automate the metallographic analysis process, there are the benefits of standardization and data management, plus the speed and precision that come with it. Coming hotfooting out of the laboratory, these capabilities turn the entire field of quality control on its head, virtually eliminating irregularities in the process and sending a tidal wave of data that is the fuel for continuous improvement.
Audit trail generation and process traceability
There are extensive audit trails that monitor every step of the sample preparation process, when using laboratory automation. Every time a user creates, edits or deletes an electronic record, it is given a computer-generated, tamper-evident time stamp and tagged with the user’s ID, date, time and the pre and post values of the changes made.
The record can also record every single operator entry and action. The auto verification is also based on target values.
Using process data for predictive maintenance
In terms of lab automation systems, the real value lies in the ability to predict and prevent failures, which is made possible by the vast amounts of data that such systems generate. Machine learning algorithms go through this data to see when equipment is likely to fail, so that maintenance can be performed before it becomes a problem.
Well-known for using IoT sensors, these systems monitor the health of equipment, create forecasts and feed into the existing maintenance systems, and really get to the bottom of which equipment needs the most attention. The process is fairly straightforward, the team identifies the critical equipment, sticks sensors on it to monitor things like vibration, temperature and pressure, and then schedules maintenance when it’s convenient to do so, rather than reacting to failures.
Metallographic labs, for example, have greatly benefited from these methods with improvements in process control, compliance documentation, and optimised equipment performance over time.
Cost and Time Savings from End-to-End Automation
End-to-end automated systems provide outstanding economic returns to the metallography laboratory. Their benefits far exceed the scope and extent of original equipment investment and technical advantages that we have so far considered.
Laboratory cost reduction strategies through automation
A significant portion of the expenses go towards labour costs, but automated metallographic systems are revolutionizing the way we can contain these costs, when running a laboratory. Studies show that laboratories can reduce the need for full-time employees (FTEs) by 20 to 30 percent when they’re in place, a number also supported by our experiences and analyses.
Coming in at any time, day or night, automated systems don’t get tired, which gives laboratories the ability to see a massive increase in output of over sixty percent without having to add any more staff. Laboratories with automated systems can easily handle growing workloads, and save money by not having to spend a lot on hiring and training more skilled metallographic technicians, which can be nearly impossible to come by.
Consumable cost savings in labs via reduced rework
Errors in sample preparation are significantly reduced, directly saving labs money on the expensive consumables, when automating laboratory processes. Manual preparation often leads to mistakes and redoing work, squandering materials, reagents and energy. A course of action that automated systems can virtually eliminate by running samples with precision.
Minor improvements in the way labs use consumables can add up to huge cost savings over time.
An example of this is in the use of magnetic disk systems for polishing materials, which outperform adhesive-backed conventional alternatives. Magnetic systems make it possible to simply swap out old disks, without damaging the backings, in comparison to the need for total replacement that is incurred with disposable PSA backings.
Return on investment in lab automation systems
Calculations of ROI for lab automation have to consider both short and long-term advantages. These investments return faster than you would think.
The payback calculation concentrates on three primary elements:
- Lower labor costs through better staff productivity
- Lower rework and consumable expenses
- Increased output without additional personnel
Looking at to get the most out of their laboratories, metallography labs are increasingly turning to automation. Automation empowers them to use their personnel for more complex, analytical work and is an advantage that goes beyond simple arithmetic calculations.
Automated sample preparation is also changing the game in metallography labs, and we can see that conventional manual operations are the main obstacles to achieving consistency and efficiency. No matter the experience level of the operator, manual operations always bring on an element of uncertainty.
Well-known to be able to vanquish such longstanding issues, lab automation systems take control of the entire preparation process with nearly no need for human assistance. Converting an art that was heavily reliant on the skill of the operator into a systematic, reproducible system is basically what they’re doing, and with robotic grinding and polishing tools providing consistent results, they’re monitoring the process very closely to fine-tune the parameters and reach peak outcomes.
Automated systems wrap up sample preparation in 25-45 minutes, in contrast to the 1-2 hours that would be required by a human. This translates into a 60% boost in output, and since labs don’t need to take on extra workers to meet the increased demand, and are able to chop through more samples in less time, productivity goes through the roof.
When considering the financial aspect of automation in laboratories, it is clear that the reduction in full-time staff that is seen after the introduction of automated systems is not just a theoretical idea. 20 To 30 percent less staff is a stark reality. Coming hotfooting off the heels of automation, this reduction in workforce leads to a huge annual saving, cuts down the need for consumables and hits the bottom line directly. The knock-on effect of reduced rework is also to be seen in the area of consumable use and expense.
A significant increase in throughput capability also opens up new revenue streams, so long as the initial cost of the equipment can be recovered, and the collective advantages of automated systems assure fast return on investment.
Automated sample preparation brings about marked enhancements in reproducibility, efficiency, better standardisation, and substantial reductions in expenditure, and these benefits have catapulted metallurgy laboratories to a crossroads, where they can turn a challenge of processing more samples with less means, into the winning formula of operational excellence and a competitive edge.
FAQs
Q1. What is the effect of automated sample preparation on laboratory costs?
In the case of laboratory automation, one of the biggest advantages is that it can lower costs dramatically. Coming hotfooting into a lab, replacing full-time employees, is not necessary, and thanks to reduced rework and supplies, we’re able to crank out more tests. Research shows that laboratories can slash their staffing requirements by 20 to 30 percent after automation, and with this, they see huge yearly savings.
Q2. What are the key benefits of automating metallographic sample preparation?
In the case of laboratory automation, one of the biggest advantages is that it can lower costs dramatically. Coming hotfooting into a lab, replacing full-time employees, is not necessary, and thanks to reduced rework and supplies, we’re able to crank out more tests. Research shows that laboratories can slash their staffing requirements by 20 to 30 percent after automation, and with this, they see huge yearly savings.
Q3. In what way does automation enhance metallographic result consistency?
In terms of metallography, the introduction of automation can be the difference between a highly variable, operator-dependent process and a consistent one. Automated systems can fully manage every step of the metallographic preparation and apply the same techniques to every sample, and that’s what transforms metallographic preparation from a craft to a science.
Q4. Can automated systems handle complex metallographic processes?
In terms of metallographic processing, automation can really shine, and these days many automated systems come equipped with programmable control over speed, pressure, and time, for each and every stage of the process. Closed-loop control in some of these systems is also a game-changer. They monitor and make adjustments in real-time to guarantee that the preparation process is proceeding perfectly.
Q5. What is the role of data in automated metallographic sample preparation?
Yes. As for the automated preparation of metallographic samples, data plays a significant role. The traceability and thorough documentation that these systems provide is a fundamental aspect in this field and the masses of data that are generated enable us to see the state of our equipment, know when it may fail and how we can fine-tune its performance, and uphold adherence to the strict standards of the industry.
