The exact CNC metal cutting machine that is right for you will depend on your specific application and production process needs.
Although laser-cutting machines offer high precision, plasma machines are much better at cutting thicker materials. Depending on the power a 6-10 kW laser can cut around 25 mm (mild steel, stainless steel and aluminium), however, when comparing operating costs, it can be more economical to cut material 10 mm and over (especially mild steel) on a plasma (unless high precision is needed). Further, the initial investment required for a plasma machine is often much less than that of a laser machine and yet thanks to technological advancements, plasma can offer excellent cut results in many cases.
The best way to define the right machine is by inviting an expert to pass by your facility and give advice on which types of machines would best suit your application.
Below are some of the other costs associated with owning a laser (or plasma) machine.
Electricity
This will firstly depend on the laser technology, for example, a CO2 laser has an electrical efficiency of around 10% compared to 45% for a fiber laser. Secondly, the power requirements will increase with laser power. Other technology exists such as Esprit’s LiveRegen which harnesses the energy lost during decelerations which can then be used for the next acceleration to reduce the electricity cost of the machine.
Auxiliary Gas Supply
Laser machines in general cut with either oxygen or nitrogen and as sheet thickness increases so does the gas consumption. For large volumes of cutting using nitrogen, investing in a nitrogen generator can often drive down costs in the long run.
Staff
As with any new piece of equipment, it will take time to get competent with the machine’s operation and adapt processes to get the most out of the new machine. Simple user interface and support is key to reducing training time and allowing anyone, regardless of their experience level, to operate the machine.
The learning process can take a few months therefore, it is key when purchasing a machine to consider the customer support offered to ensure you get the very best out of your machine.
Maintenance
As with gas usage, the maintenance requirements vary depending on the technology and also on machine usage. In general, fiber laser machines have very few operator maintenance requirements. Regular machine services (from 1 to 4 times a year) are also strongly recommended to keep your machine up and running.
Material Costs
It is important to note that manufacturers may have strong material recommendations to ensure good cut quality.
As is the case with any business, adopting cost-saving practices helps ensure profitability and keeps prices attractive to clients. Successful cost management does not hinge on dramatic cuts but rather on continuous improvement and minor changes that accumulate over time. These nine cost-saving practices for your metal fabrication shop are efficiency-boosting methods that hold value for both seasoned veterans in the business and newcomers starting their first shop.
Some cost-saving methods are relatively easy and inexpensive to make, while others, such as upgrading your machinery, may require a substantial initial outlay of funds. But both types of improvements can result in cost-savings over time.
One of the most effective ways to reduce costs in metal fabrication is through material optimization. Carefully analyze material usage and minimize waste to ensure that your team uses every piece of metal efficiently. Implementing nesting software or using automated processes can help maximize yield from raw material by reducing scrap rates.
Keeping an open mind about the type of metals and other materials you can work on is another way to reduce costs. If a less expensive material will provide the same quality of parts and components, it’s worth discussing this option with your clients or proactively offering less expensive options. But never skimp on materials where parts must meet stringent specifications for the ability to endure extreme temperatures, high pressure, or contact with corrosive chemicals or gasses.
Working closely with clients on their design needs is a valuable cost-saving strategy. By leveraging your in-house expertise, you can offer suggestions on improving the manufacturability of the design in ways that the client might not have considered.
This collaborative approach allows for early identification and resolution of potential issues that could lead to costly modifications later in the fabrication process. Furthermore, this partnership fosters trust and showcases your commitment to delivering the best possible results in the most cost effective manner.
By working with your clients, you can find ways to limit the necessity for tight tolerances where possible and define strategies to produce parts using standard gauge metals. By educating clients about the cost implications of demanding ultra-precise specifications and suggesting alternatives where feasible, you can help manage expenses without compromising the integrity of the final product.
These methods require a proactive approach and excellent communication skills, but the cost savings they can bring about make them worth considering in your metal fabrication shop.
Neglecting equipment maintenance can lead to increased downtime, reduced productivity, and costly repairs. Scheduling regular maintenance checks for your machines is easy and relatively inexpensive compared to buying new equipment when your poorly maintained machines break down. Preventative maintenance can help prevent breakdowns and prolong their lifespan, ultimately saving on repair or replacement costs. Furthermore, keeping your equipment in good condition ensures higher quality products and mitigates the need for reworks due to faulty machinery.
Even the best-maintained old machine may not hold a candle to a newer, more advanced model with integrated computer controls and built-in energy efficiencies. As part of the cost-saving process, upgrading your machinery to more efficient and advanced models can lead to significant benefits in the long run.
For example, tandem press brake machines may carry a high up-front cost, but the advantages they provide in terms of productivity and precision can far outweigh the initial outlay. With their ability to handle larger components and execute complex bends with precision, tandem press brakes promote efficiency and reduce the time taken to complete projects.
This benefit, in turn, enables quicker turnaround times and increased throughput. By upgrading to advanced machinery such as tandem press brakes, your metal fabrication shop can enhance its capabilities, improve product quality, and save on labor costs.
Providing your clients with the full range of metal fabrication services, from design through fabrication and finishing, can reduce costs for both you and your customers. By eliminating the need for outsourcing certain tasks, you can streamline processes and save on transportation costs. Additionally, handling all aspects of the project allows for better control over quality and deadlines.
Automation has revolutionized the metal fabrication industry by increasing productivity, reducing labor costs, and improving accuracy. By automating certain tasks in your shop with robotic machines and control software, you can save both time and money while ensuring consistent quality in your products.
Incorporating technology in your metal fabrication shop can help streamline processes, improve accuracy, and reduce waste. Plus, robots can work in conditions that aren’t possible for human beings, and CAD-CAM software can provide superior and more consistent accuracy in calculations and measurements than manual processes.
Incorporating energy-saving practices can significantly reduce utility costs for your metal fabrication shop. Simple changes such as switching to energy-efficient lighting or investing in equipment with lower power consumption can lead to significant long-term energy savings.
Consider installing computerized monitoring systems that can make real-time adjustments in energy usage. These adjustments range from adjusting thermostats to switching lights off when not needed to putting machines with power control features into a low-power consumption mode.
Investing in employee training is investing in the future of your business. By continuously educating your workforce on new techniques and technologies, you can increase efficiency, reduce rework and waste, and ultimately save costs. Moreover, skilled workers are more likely to spot potential issues early on and implement solutions before they become costly problems.
Properly trained employees can have a significant impact on the efficiency and quality of work in your metal fabrication shop. Investing in training programs for current employees and providing ongoing education for new hires can improve productivity while reducing costly mistakes.
Maintaining good relationships with suppliers is essential, but don’t be afraid to negotiate for better prices or discounts. Regularly reviewing your supplier contracts and negotiating for lower prices or better terms allows you to reduce material costs and increase profit margins.
By implementing these nine cost-saving practices, your metal fabrication shop can become more competitive by offering affordable prices to clients while maintaining profitability. Don’t be afraid to explore new techniques and technologies as they emerge to stay ahead of the competition. Both small changes and new machines can add up to significant cost savings over time.
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