JPT-Chat Technical Support & Service

For bright, oxide-free edges on stainless steel, use high-purity nitrogen (99.95%+) as the assist gas at pressures between 12-20 bar depending on thickness. Key parameters to adjust: focus position (start at 0 and adjust in 0.5 mm increments), cutting speed (reduce 5-10% below maximum for smoother edges), and nozzle standoff distance (typically 0.5-1.0 mm). Yellow discoloration on the cut edge usually indicates insufficient nitrogen pressure or a gas line leak. On stainless thicker than 6 mm, reducing speed by 15-20% from the parameter sheet values often improves edge roughness. Our application engineers can provide parameter sheets specific to your stainless grade and thickness.

Mild/carbon steel: oxygen (O2) for oxidation-assisted cutting. Produces a dark oxide edge but allows faster cutting and lower gas cost on thick material. Stainless steel: nitrogen (N2) at high purity for clean, oxide-free edges suitable for food-grade or visible applications. Aluminum: nitrogen at high pressure (16-22 bar) to blow molten material from the kerf. Brass and copper: nitrogen or compressed air depending on edge quality requirements; copper above 4 mm may require reduced speed to prevent back-reflection. Some shops use compressed air for thin mild steel (under 3 mm) to reduce gas costs, accepting slightly rougher edges. We provide a gas and pressure recommendation table for each machine model.

The standard 2-year warranty covers the laser source, CNC controller, servo motors, linear guides, and cutting head assembly against manufacturing defects. It does not cover consumable items (nozzles, protective lenses, ceramic rings), damage from misuse, power surges, or operation outside specified parameters. The laser source carries the manufacturer's original warranty (JPT: 2 years, Raycus: 18 months standard). Extended warranty options are available at the time of purchase. After warranty, lifetime technical support via phone and remote access remains available at no charge.

Common consumables (nozzles, protective lenses, ceramic rings, focus lenses) ship within 48 hours from our Shenzhen warehouse. Less common components such as servo drives, control boards, and cutting head assemblies typically ship within 3-5 business days. International shipping adds 3-7 days by express courier or 15-25 days by sea freight. We recommend keeping a starter kit of consumables on hand to avoid production interruption. Your sales contact can recommend inventory levels based on your production volume and material mix.

Domestic (China): free on-site installation by our factory engineers is included with every machine purchase. International: we provide detailed video-guided installation with real-time remote diagnostics support. Many of our distributors also offer local installation services. For customers who require a JPT-Chat factory engineer on-site internationally, this can be arranged at additional cost (travel and accommodation). The machine arrives with a step-by-step installation manual, leveling tools, and pre-configured software. Most operators are production-ready within 2-3 days of receiving the machine.

It depends on what you cut. Fiber lasers (1,070 nm wavelength) are more efficient on metals: faster on thin sheet, lower operating cost, and longer source life. For a shop cutting only metals under 25 mm, fiber is usually the stronger choice today. However, CO2 lasers (10,600 nm) remain necessary for non-metal materials like wood, acrylic, fabric, leather, and certain plastics that fiber lasers simply cannot process. Mixed-material shops cutting both metals and non-metals may still need a CO2 machine alongside a fiber. On thick mild steel above 20 mm, the edge quality difference narrows and some fabricators still prefer oxygen-assist CO2 cutting for thick plate cosmetic edges. There is no single "better" technology. The answer depends on your material mix, thickness range, production volume, and whether edge finish or speed matters more. We can review your part files and recommend which technology fits.

Fiber lasers at 1,070 nm wavelength are not effective on organic materials. Wood, MDF, acrylic, glass, fabric, leather, and most plastics either do not absorb the fiber wavelength well enough to cut cleanly, or produce toxic fumes. PVC must never be laser-cut (releases hydrochloric acid gas). Stone, concrete, and ceramics are also outside the capability range. For highly reflective metals like copper and brass, fiber lasers can process them up to about 6-8 mm with a back-reflection protection module, but edge quality on thick reflective stock is often rougher than on steel. Pure titanium requires inert gas shielding and controlled atmosphere to avoid oxidation and embrittlement. If your work involves materials outside the metal spectrum, CO2 laser or waterjet may be a more appropriate technology.

Every JPT-Chat machine undergoes a 72-hour burn-in test at our Shenzhen facility before shipping. The test protocol includes: (1) dimensional accuracy verification using a Mitutoyo CMM (coordinate measuring machine) on a standardized 500x500 mm test pattern cut from 2 mm 304 stainless steel with nitrogen assist at 14 bar; (2) edge roughness measurement using a Mitutoyo SJ-210 surface roughness tester at three points per cut edge; (3) continuous 8-hour cutting cycles on mild steel (3 mm, 6 mm, 10 mm) to verify thermal stability and servo tracking error under sustained load; (4) pierce reliability test with 500 consecutive pierces on 10 mm mild steel to confirm no failed starts. We provide the test report with each machine, including measured positioning accuracy, kerf width, and edge roughness (Ra) values. Customers can request to observe the test via live video link before shipment.

Standard configurations (Standard Series, 1-6 kW) are typically ready to ship within 15-25 working days from deposit receipt. Pro Series (12-20 kW) and custom configurations may require 25-35 days depending on component availability. Shipping by sea adds approximately 25-35 days to North American and European ports, 10-15 days to Southeast Asian ports. Air freight is available for urgent orders at additional cost. We provide container loading photos, bill of lading, and tracking information once the machine ships.

Yes. Send us your material samples (specify grade, thickness, and any critical tolerances) along with your DXF or DWG cutting files. We will run the parts on the machine model you are considering and return the cut samples along with the cutting parameter settings used. There is no charge for this service. Turnaround is approximately 5-7 business days from receipt of your materials. This allows you to evaluate edge quality, dimensional accuracy, and heat-affected zone characteristics before making a purchase decision.