Features
| - Designed for high throughput, automatic arc melting of 32 samples (each sample weight <10g iron-based alloy) up to 3000 ℃ in a single batch (Various crucible design is available upon request)
- Glove-box ensure arc melting in an ultra-clean gas environment with <1ppm H2O and O2 level
- Water-cooled copper crucible, crucible grid cover, and vacuum dust removal (optional) allow arc melting of multiple samples without cross-contamination.
- 4 mm diameter tungsten electrode is mounted on a CNC three-axis (X, Y, Z) stage inside the glove box.
- The tungsten electrode can be programmed with stirring motion for uniform arc melting of large samples.
- Powerful arc melting power supply enables reliable, stable arc ignition.
- Manual arc melting with a handheld stinger is available.
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| Structure | - The high throughput, automatic arc melting system consists of
- Standard glove-box with <1ppm H2O and O2 purification system
- Two 16-cavity copper crucibles (32 cavities total) with water cooling
- Water-cooled tungsten electrode integrated with CNC three-axis (X, Y, Z) stage
- Handheld arc melting stinger with KF40 feedthrough.
- 16 L/min recirculating water chiller for cooling the copper crucibles and arc melting stinger.
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Arc Melting & Copper Hearth
| - Metals are melted with an electric arc in a water-cooled copper crucible which has 32 cavities (25mm Dia x 8mm depth each). This allows the melting (up to 3000°C) of 32 specimens in a single batch without cross-contamination (see pic.1 and pic.2 below)
- The Stainless steel crucible grid cover is included to protect the samples from cross-contamination ( pic.2)
- The vacuum vapor removal fixture is installed on the CNC stage to minimize cross-contamination during arc melting of low melting point materials. (see pic.3 below)
- 4 mm diameter tungsten electrode /arc stinger is installed inside the glovebox with CNC X, Y, Z positioning (see pic.4 below).
- The water-cooled rectangular copper hearth is installed on the X (or Y) axes motion table.
 pic.1  Pic. 2  Pic. 3  Pic. 4 |
CNC Positioning
  | - Touch screen CNC three linear axes (X-Y-Z) of motion enables precise "arc stinger" to "hearth cavity" positioning as programmed to achieve automatic melting by touch one button.
- Arc stinger motion is driven by several step motors to achieve X, Y, Z or circle moment for the best melting result
- The arc stinger travels in the pattern shown in the picture on the left.
- Stirring motion of arc melting stinger can be programmed for uniform melting of large samples.
- For each sample, the arc melting operation consists of two-steps: stationary arcing step and stirring step (1 - 10mm diameter adjustable stirring motion)
- X, Y, Z motion speed: ≤ 800mm/min
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Gas-Controlled Glove Box
| - Glove Box: EQ-VGB-6OP-LD (see pic.1 below)
- Operation Environment: dry environment with good ventilation, 15-25 ℃. Air conditioner (not included) is required if out of this range.
- Glove-box chamber dimension: 1200mm x 740mm x 900mm (LxWxH)
- Two airlock chambers:
- Large antechamber dimension: 360mm ID x 600mm L
- Small antechamber dimension: 150mm ID x 220mm L
- Two 175mm diameter glove ports with a pair of 8" Butadyl gloves.
- Filter system: gas outlet filters can eliminate particle size > 0.3μm
- Openable front window panel for easy equipment loading
- Arc melting stinger/gun with KF40 feedthrough to connect into the glovebox (see pic.2 and pic.3 below)
- Glove Box with H2O & O2 Purification System and Openable Front Window is included with all necessary feedthrough, which includes CNC stage control cable, cooling water inlet & outlet, arc melting power +/-, handheld arc melting stinger, and vacuum dust removal. (see pic.4 below)
   
pic.1 pic.2 pic.3 pic.4 |
Arc Melting Power Supply
| - Input Voltage: 110 or 220 VAC selectable, single phase
- Current: 34 A max (40A circuit breaker integrated). Recommend power source breaker ≥ 40A
- Rated DC output:
- 15V/ 125A at 35% duty cycle - 110V input
- 18V/ 185A at 35% duty cycle - 220V input
- Minimum DC current output: 5A
- Pulse DC and AC output modes available.
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Gas Purification System
| - Automatic moisture and oxygen removal to <1 ppm (20℃, 1 atm)
- Pressure Range: ± 12m-bar
- 240 L/m Heavy-duty mechanical vacuum pump with exhaust filter is included.
- Precision Humidity Analyzer with KF25 Flange (0-999 ppm) and the oxygen sensor is installed on the Purification System with the accuracy of +/- 0.1 ppm
- Large capacity moisture filter built in the bottom of the mobile cart, which can absorb moisture up to 1.5 kg
- Regeneration Temperature Controller is built-in for filter regeneration
- An automatic pressure control system can keep the pressure at a constant level. Manual pressure control is allowed via a foot pedal.
- Touch screen panel enables easy setting, humidity, oxygen concentration, and pressure level display
- The removable control panel can be placed on the side for easy operation
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Water Chiller & Gas
 | - MTI's KJ-5000 recirculating water chiller (16 L/min) is included for the water cooling of copper crucibles and arc melting stinger.
- High purity Argon gas is with at least 5N purity (>99.999%) required (not included) for the arc melting process.
- 5% Hydrogen + 95% Argon gas is needed for regenerating the purification station (not included)
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| Dimensions | System dimension: 2300mm x 1230mm x 1880mm (LxWxH) |
Shipping Weight & Dimensions
| - Two Pallets
- #1: 1455 lbs, 80"x41"x87"
- #2: 460 lbs, 48"x40"x30"
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| Warranty | - One-year limited warranty with lifetime support
- Rusting and damage due to improper storage condition or maintenance are not covered by warranty
- Gloves and oxygen sensor are consumable parts which are NOT covered by warranty.
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| Compliance | - CE certified
- NRTL (UL 6101 ) Certification is available upon request at additional charges（please click mark below to learn what is )
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| Application Notes & Warnings | - Regularly perform regeneration to maintain optimum purification efficiency.
- The O2 sensor is consumable and its expected life-span is around one year. Please order O2 sensor replacement at MTI at extra cost.
- The use of corrosive gasses is prohibited as they will damage the water and oxygen sensors!
- During the arc melting operation, never allow the tungsten tip to touch the material or the copper crucible! Move glove and had away from the copper crucible while the sample is hot or the arc melting is in operation! Use tweezers to manipulate the sample only after the sample has been cooled down.
- Never do the arc melting outside of the copper crucible! It may damage the glove-box and cause electrical injury to the user.
- The user must wear safety glasses or a mask with a tinted window when operating the equipment for eye protection.
- Do not use an arc melting current >80A when using a handheld arc melting stinger, which overheats the handheld stinger.
- You may order our high -throughput pellet press and die to prepare 32 pellets for better melting ( click Picture below )
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| Operation Manual & Video | 
 
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XRF Composition Analysis
 
| - EQ-XRF-32 is a high throughput, automatic 32-sample X-ray fluorescence (XRF) / energy dispersive spectrometer (EDS) system for non-destructive composition analysis
- 32-sample transparent stage (no interference to XRF signal) for as-received arc melting samples (≤ 10g iron-based alloy)(max sample size: 20 mm) is included
- The 32-sample stage for cold embedded metal/alloy samples (max sample size: 26mm) is included.
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