Japan, Nikkin Flux
Nikkin Flux NK1700 Pin Hole Tester
Made in: Japan
Manufacturer: Nikkin Flux
Model: NK1700
Features
This device measures the gas content in aluminum molten metal by specific gravity, which indicates the metal’s grade. In high-quality aluminum casting, surface defects caused by residual gas holes, known as “pinholes,” represent a significant quality concern. Understanding the volume of gas contamination in the molten metal is crucial for planning the subsequent treatment, which is the degassing process.
・Able to predict the risk to get pinhole defect from Hydrogen gas.
・Measurement time is about 5 minutes.
・The exhaust flow volume and the time required to reach target pressure are adjustable.
・It is introduced at low cost.
Example of solidification sample
Solidified sample by pinhole test NK1600.
The specific gravity differs depending on the exhaust flow gas volume.
By adjusting pressure reduction conditions, you can conduct solidification test under the high correlation with defect rate of your products.
Specifications
| Model | NK1120 | NK1600 | NK1700 (latest verion) | |
| Display Type | Gauge Pressure | |||
| Vacuum Chamber | 1/4PT Screw | NW 16 flange | NWISflange | |
| Vacuum Pump | ULVAC G50SA | |||
| Wiring | Control Voltage 10OV ■ Possibility of influence of vacuum oil mist because wiring is located inside vacuum pump. | Control Voltage 24V : No influence of vacuum oil mist because wiring is moved from vacuum pump to control box. | ||
| Control Box | General iron control box | Originally designed by aluminum frame and stainless plate | Originally designed by aluminum frame and stainless plate | |
| Control Unit | Breakdown risk because meter and button located near aluminum molten sample outlet | Structure preventing buttons from interfering with sample outlet because buttons are moved to left control box | Structure preventing buttons from interfering with sample outlet because buttons are moved to left control box. Easily corresponding to version up. | |
| Pressure Gauge | Front Side | Analog pressure gauge with contact (—Out of Production) | Analog pressure gauge without contact | Digital pressure gauge with contact |
| Inside | – | Digital pressure gauge with contact | – | |
| Expected upgrading | – | – | • Control board will be adopted • Pressure unit change gauge unit—SI unit* 1 • Software debugging of BB (bubble burst number) | |
1 * Gauge unit shows the negative value in decompression side. International System of Units (SI) shows positive value ( basically in Pa) in decompression side. Mbar is used in Europe.
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