When considering the purchase of a plasma cutting machine, budget is crucial. Therefore, keeping budget constraints in mind is essential. Ignoring these constraints might lead to high-performance machines that exceed your budget. Currently, plasma cutting machines fall into two main categories: domestic and imported. Domestic machines offer three specifications—low, medium, and high. Generally speaking, users accept their pricing. In contrast, imported plasma machines cost significantly more, sometimes several times higher. Additionally, consumables like cutting nozzles and electrodes for imported machines are much more expensive. While imported machines often provide better cutting results, their high price and operational costs can be prohibitive for many companies.
Cutting Thickness
Moreover, each plasma cutting machine has specific thicknesses it can handle effectively. For instance, low-power plasma machines excel at cutting thin plates. Typically, domestic plasma machines rated at 40-60A cut steel plates below 2mm in thickness. Although some imported models can also cut these thin plates, their high cost makes them less common for this application. Consequently, only high-speed desktop plasma cutting machines should handle plates under 2mm. In contrast, for steel plates ranging from 2mm to 16mm, portable and gantry models work well. However, for plates that are 25mm thick or more, gantry models are the best choice.
Cutting Materials
In addition, plasma cutting is excellent for processing stainless steel and various alloy materials. This capability makes it essential for metal processing technicians. While carbon steel plates typically rely on flame cutting, plasma cutting becomes necessary when working with stainless steel. Therefore, without a plasma cutting machine, processing stainless steel poses significant challenges.
Advantages of Using CNC Plasma Cutting Machines
Furthermore, CNC plasma cutting machines offer several advantages that enhance cutting quality. Factors such as scum, the heat-affected zone, top edge fillet, and cutting angle significantly influence cutting outcomes. Importantly, plasma cutting produces minimal scum on cut edges. Additionally, it significantly reduces the heat-affected zone compared to flame cutting.
Dross
Moreover, dross is another critical factor to consider. Plasma cutting uses hot, charged gases to melt metal and blow away the molten material from the cut surface. In contrast, flame cutting relies on a chemical reaction between oxygen and steel, leading to iron red dross. Due to this difference, plasma cutting produces less dross, which is easier to remove. Consequently, you can typically knock off dross from plasma cutting without grinding or scraping, saving time in secondary operations and boosting productivity.
Heat-Affected Zone
Heat-affected zones are critical in metal cutting. High temperatures alter the chemical structure of the metal. This alteration results in a darkened edge that may warp and require secondary welding to fix. Notably, the speed of the plasma torch minimizes the heat-affected zone. This feature significantly reduces the need for additional processing. In comparison, flame cutting produces visible discoloration known as tempering, which can be a concern for some users.
Higher Productivity
When it comes to productivity, CNC plasma cutting can operate up to 8.5 times faster than flame cutting. This significant increase in speed translates into considerable time savings. As a result, businesses can optimize their operations effectively.
Lower Cost Per Part
When assessing costs, it is important to differentiate between operating costs and the cost per part. The operating cost per meter calculates by dividing the total hourly cutting cost by the total length cut in that hour. Factors such as consumables, electricity, gas, labor, and ongoing expenses contribute to cutting costs. Since plasma systems cut faster, they allow for greater output and a lower cost per part. For handheld cutting, calculating the job cost by multiplying the hourly operating cost by the time required provides a clearer picture of savings.
Daily Maintenance and Care of Plasma Cutting Machines
To ensure optimal performance, it is vital to maintain plasma cutting machines correctly. First, assemble the cutting torch properly. Ensure all parts fit well to allow gas and cooling air to flow effectively. Additionally, working on a clean flannel prevents dirt contamination.
Next, replace consumables like electrodes, nozzles, and swirl rings before they wear out completely. Waiting too long can lead to uncontrollable plasma arcs, potentially causing severe damage to the cutting torch. Therefore, regularly check these consumables when you notice a decline in cutting quality.
Furthermore, clean the connecting threads of the cutting torch during consumable replacements or routine maintenance. Ensure both the inner and outer threads are clean. If necessary, repair them to maintain proper function. Additionally, keep the contact surfaces of the electrode and nozzle clean. Any dirt on these surfaces can disrupt the torch’s functionality.
Daily checks of gas and cooling air flow are also necessary. If you detect insufficient flow or leaks, address these issues immediately to avoid damage. To prevent damage from collisions, program the system correctly to avoid over-limit travel. Installing an anti-collision device can significantly reduce the risk of torch damage during operation.
Common Causes of Cutting Torch Damage
Cutting torch damage often arises from several common issues. These include torch collision, destructive plasma arcs caused by damaged consumable parts, and arcs resulting from dirt contamination. Additionally, loose parts can lead to instability, exacerbating the issue.
Precautions
To maintain the longevity and performance of your plasma cutting machine, follow these precautions. Avoid applying grease to the cutting torch, and do not over-lubricate O-rings. Additionally, refrain from spraying anti-splash chemicals while the protective cover is attached to the cutting torch. Never use a manual cutting torch as a hammer.
Why Choose Us
Our expertise in plasma cutting machines sets us apart from the competition. With over ten years of experience in the industry, we provide tailored solutions that meet your specific needs. Our commitment to quality ensures you receive equipment that enhances productivity and cutting precision. Additionally, we offer 24-hour online support and a one-year warranty on our products. Choose us for reliable performance, excellent service, and customized solutions to elevate your operations.
