Hebei Juliang Technology Co., Ltd. is one of the leading manufacturers and suppliers of gantry metal cutting machine in China. Please feel free to buy CE approved machinery made in China here from our factory. All customized machines are with high quality and competitive price.

Product brief introduction

A gantry metal cutting machine is a big, CNC-controlled setup for industrial plate work. It has a strong overhead bridge, called a gantry, that travels over a cutting table, holding one or more torches that follow programmed lines. These gantries are usually 3-4 meters wide or more, and can cut lengths from several meters up to 20 meters or even longer. They can have plasma torches for fast cutting of conductive metals, oxy-fuel torches for thick carbon steel, or both on the same gantry.

What sets gantry cutting machines apart from smaller table systems is their size and flexibility. You can work with full-sized steel plates in one go, skipping the need to move materials around. Having two cutting methods means you can use plasma for quick cuts on thinner pieces and then switch to oxy-fuel for thicker plates, all on the same machine. The CNC controller precisely follows programmed paths, ensuring great, consistent quality even for long production runs.

Customer Case

A steel service center in the Midwest serves distributors and fabricators throughout three states. They operated two older plasma cutting tables, each with a single torch, which meant they were at maximum production and had to refuse new orders.

To solve this, they installed a new gantry machine featuring a 3.5-meter span, 12-meter rails, and equipped with two plasma torches and one oxy-fuel torch. This dual-torch plasma setup effectively doubled their output for thin to medium plate. The oxy-fuel torch was perfect for handling thicker plate jobs that their previous machines struggled to cut efficiently.

The owner shared that the machine paid for itself in approximately 14 months. Significant savings came from two key areas: greater capacity (they could now accept all orders) and lower labor costs (one operator manages the gantry system compared to two on the old tables). The machine operated for 16 hours daily across two shifts, consistently delivering high-quality results.

A notable point the owner mentioned was the gantry system's superior accuracy over their older machines. The dual-side drive ensured the gantry remained square to the rails, even at high speeds. This precision resulted in better part fit-up during welding, reducing the need for rework.

Control System and Software Capabilities

The CNC control system equipped on the Gantry Metal Cutting Machine is not merely capable of running G-code. It is also integrated with CAD/CAM software, allowing operators to complete the entire process from graphic drawing to cutting path generation directly on the machine screen. For small and medium-sized factories without dedicated programmers, this means that one computer and one workstation can be saved. The system supports mainstream file formats such as DXF, DWG, and PLT, and is compatible with files output by mainstream CAD software. The cutting parameter library is stored by material and thickness, and operators can select "Carbon Steel, 16mm" from the drop-down menu, and the machine will automatically retrieve the corresponding cutting speed, gas pressure, piercing height, and gap compensation values without the need for manual input.

Cutting quality inspection and scrap control

During continuous production, fluctuations in cutting quality need to be detected and corrected promptly. The operators of the Gantry Metal Cutting Machine can conduct rapid quality checks by cutting test samples: cut a test piece, measure the width of the cut seam, the verticality of the cross-section, and the degree of slag hanging. The system provides standard quality comparison charts to help the operators determine whether the current cutting quality meets the standards.

For batch cutting, the system supports the first-piece inspection confirmation process: after the first part is cut, the equipment stops and prompts the operator to check the dimensions and quality. Once confirmed to be correct, the subsequent cutting can continue to prevent the entire sheet from being scrapped. Although this function is simple, it is very effective in reducing the scrap rate of batch production.

Common Problem

How often does the machine need to be calibrated?

Under normal usage conditions, it is recommended to perform an accuracy calibration every 6 months. The calibration content includes: checking the positioning accuracy of each axis, the repeatability positioning accuracy, the verticality of the cutting torch, and the concentricity of the chuck (if equipped with a rotating axis). If the machine operates for more than 12 hours per day, it is recommended to shorten the interval to 3 months. The accuracy calibration can be completed by the customer themselves, without the need for on-site service from the manufacturer. We will provide the calibration procedures and operation guidance.

How can I prevent the sheet from moving during cutting?

The sheet fixation method depends on the machine configuration. The standard configuration uses an air pressure clamping device, with clamping points set around the cutting area. The more common practice is to use electromagnetic suction cups or vacuum suction tables to fix the sheet on the worktable. For non-magnetic materials (aluminum, stainless steel), vacuum suction or mechanical clamping is used. Air pressure clamping is the most common standard configuration.

How long is the installation and commissioning cycle for the equipment?

From the arrival of the equipment to the completion of acceptance, the standard installation cycle is 5 to 7 working days. If the factory foundation has been completed in advance, the installation cycle can be shortened to 3 to 5 days. After the commissioning is completed, our technicians will provide 2 days of operation training to ensure that the operators can independently operate the equipment. Custom configurations (multiple heads, mixed cutting, etc.) may require an additional 1 to 3 days.

The operating capacity of the equipment in high-temperature or extremely cold environments?

The machine is designed to operate within a temperature range of 5 to 40°C. In high-temperature conditions (above 35°C), the cooling system of the plasma power supply needs to clean the heat sinks more frequently to ensure efficient heat dissipation. In low-temperature conditions (below 5°C), it is recommended to preheat for 30 minutes before startup, especially for the hydraulic system and gas pipelines. For extreme temperature environments, we can provide additional insulation and heating options.