EN-CARBO NVC SeriesCompact batch-type vacuum carburizing furnace

EN-CARBO NVC Series
Original oil tank designed to minimize distortion.
Workpiece is quenched in the center of an oil tank which is designed with a circular crosssection. This enables quenching in all directions with flow uniformity, and fast processing thatsuppresses cooling irregularities.

Small-lot, multiple item production and shortened lead times

Precision heat treatment

Micro-size parts
Multi-product support
Gear and other prototypingv Smooth process switching and small-lot processing optimized for small-lot, multiple item production
applications for prototypes, etc.
v In addition to normal carburizing and super carburizing for case hardened steel, also ideal for VNC(Vacuum Nitro-Carburizing) treatment and sub ECD 0.2 mm carburizing for SPCC etc.
v Hinged heating chamber designed for easy maintenance.
v No exhaust gas burning allows nighttime operation and increases productivity.
v Small exterior dimensions make installation easy and lower cost of operations, by cutting logistics
costs, for example.

* Photograph shows NVC-3 model.
* Front table and mechanical booster are options.

Materials development
Precision moldingCompact batch-type vacuum carburizing furnace

EN-CARBO NVC Series
External View

Structural specifications
Uniform cooling is enabled by lowering material to the centerof the oil tank.
Utility supply panel

WidthControlpanel

Quenchingoil heater unit

Quenchingoil filter

Quenching oil circulation pump

HeightDepth

Uniform cooling enabledFL

Cooling chamber

Heating chamber Basic specifications

Specifications
Standard specifications
Main specifications

Model NVC-1

Model NVC-3

Effective dimensions

400 × 400 × 400 mm

460 × 620 × 550 mm

Gross capacity

100 kg300 kg

Cooling methodBoth oil quenching and gas cooling

Operating temperature

800ºC - 1050ºC
2.7 × 3.5 × 2.9 m

3.5 × 5.1 × 2.9 m

Heater power input

30 kW

45 kW
1.0 × 102 Pa (ABS)Ultimate vacuum level

1.0 × 105 Pa (ABS)

Temperature uniformity±5ºC

Quenching oil temperature
Quenching oil capacity
Vacuum level

1.0 × 102 Pa (ABS)
2.0 × 105 Pa (ABS)

Cooling fan

7.5 kW

Width × Length × Height VNC process (vacuum nitride carburizing process)3500 L

Maximum cooling pressure

Ambient coolant pressure: 290 kPa

OPTIONS Convective heating

80 - 150ºC
1100 LGross charge

Maximum operating temperature: 1050ºC

Exterior dimensions

Vacuum levelRemarks
Width × Length × Height

11 kW

OPTIONS 290 k Pa nitrogen pressurized cooling (removable option)
Cooling fan and cooler (removable option)
Pressure-resistant door (removable option)
 High temperature, low temperature oil quenching
Heating/cooling system setting for 60 to 80ºC or 150 to 200ºC oil quenching Quenching oil fast heating

176, Ohgake, Namerikawa-City, Toyama 936-0802, JAPAN
Tel:+81-(0)76-471-2981 Fax:+81-(0)76-471-2988 E-mail:cthinfo@nachi-fujikoshi.co.jp

Tokyo Head Office
Shiodome Sumitomo Bldg. 17F 1-9-2 Higashi-shinbashi, Minato-ku, Tokyo 105-0021, JAPAN
Tel: +81-(0)3-5568-5111 Fax: +81-(0)3-5568-5206
URL: http://www.nachi-fujikoshi.co.jp E-mail: webmaster@nachi-fujikoshi.co.jp
Toyama Head Office
1-1-1 Fujikoshi-Honmachi, Toyama 930-8511, JAPAN
Tel: +81-(0)76-423-5111 Fax: +81-(0)76-493-5211
Specifications and configurations may change due to product developments without prior notice.

CATALOG NO.

F5247E2008.11.X-ABE-ABE