Metal printer (core equipment)

The metal printer, also known as Selective Laser Melting (SLM) forming equipment, is the core of this system. Its working principle is to use a high-energy laser beam to scan and melt CoCr alloy powder layer by layer according to a three-dimensional model, and stack them layer by layer to finally form metal parts.
During the printing process, the printing chamber requires: ① a stable power supply (relying on a power stabilizer); ② Continuous cooling (relying on the circulation and heat dissipation of the water cooler); ③ Nitrogen protective atmosphere (relying on nitrogen generators and refrigerated dryers to provide dry nitrogen gas to prevent metal oxidation).

Voltage Regulator

TND-5000VA automatic power regulator with a capacity of 5kVA. Provide stable 220V power supply for precision electronic components such as laser systems and control motherboards of metal printers to prevent printing interruptions, unstable laser power, or equipment damage caused by voltage fluctuations in the power grid.

Nitrogen Generator

BNT-SP101 PSA (Pressure Swing Adsorption) nitrogen generator. Using carbon molecular sieves to separate high-purity nitrogen from compressed air, providing an inert protective atmosphere for SLM printing chambers. Nitrogen isolates oxygen during the printing process to prevent oxidation reactions of molten CoCr alloy powder, ensuring part density and mechanical properties.

Refrigerated Air Dryer

BNT brand refrigerated dryer. By using refrigeration compression to condense and precipitate water vapor in compressed air, a dry and clean compressed air source is provided. Used in conjunction with a nitrogen generator: pre treat compressed air with a refrigerated dryer → separate nitrogen gas with a nitrogen generator → inject dry high-purity nitrogen gas into the printing chamber.

Drying Oven

Electric hot air drying oven, equipped with digital temperature controller. Dry the metal powder before printing to remove any adsorbed moisture from the powder. Once CoCr alloy powder becomes damp, splashing and porosity defects will occur during SLM printing, seriously affecting the quality of the parts.

Screening Machine

Laboratory vibrating screen machine, equipped with multi-layer stainless steel mesh. Function: ① New powder inspection: Ensure that the powder particle size distribution (usually 15-45 μ m) meets the printing requirements; ② Recycling powder screening: Classify the residual powder collected after printing according to particle size, and the qualified powder can be recycled to reduce material costs.

Screening Machine

Industrial wet dry dual-use vacuum cleaner with stainless steel barrel body. Used for: ① Cleaning the workstation before and after printing to prevent metal dust pollution; ② Collect residual powder in the printing chamber for recycling; ③ Maintain workshop cleanliness, CoCr powder inhalation poses health risks, and safety and cleanliness cannot be ignored.

Metal Powder (Raw Material)

Sealed aluminum bottle containing CoCr alloy powder, specifically designed for SLM printing. A typical dental CoCr powder consists of alloying elements such as cobalt (~60%), chromium (~28%), tungsten, and molybdenum. The powder is stored in a sealed container to prevent oxidation and moisture.

Heat Treatment Furnace

Box type heat treatment furnace (muffle furnace), equipped with ceramic heating chamber and temperature control system. There are significant residual thermal stresses inside the printed CoCr parts, which can be eliminated through high-temperature annealing (usually 700-850 ° C) to: ① eliminate internal stresses during printing; ② Uniform organization; ③ Improve ductility and mechanical properties.

Polishing Machine

Used for surface finishing of CoCr dental stents. After heat treatment, the parts are subjected to electrolytic polishing or mechanical polishing to remove surface melt spheroidization and step patterns, achieving mirror gloss and a surface roughness of Ra ≤ 0.2 μ m, meeting the comfort and hygiene requirements for oral wear.

Polishing Machine

Used for surface finishing of CoCr dental stents. After heat treatment, the parts are subjected to electrolytic polishing or mechanical polishing to remove surface melt spheroidization and step patterns, achieving mirror gloss and a surface roughness of Ra ≤ 0.2 μ m, meeting the comfort and hygiene requirements for oral wear.