EQUIPMENT SERIES
CONAL VH · Continuous graphite purification furnace
NAURA ↗The CONAL VH cleans carbon parts, not wafers. It purifies the graphite structural parts and felt that line furnaces and hot zones in semiconductor and solar equipment, running them through continuously at high temperature.
NAURA's Chinese text describes purification; its English heading calls the CONAL VH a graphitization furnace. If you need graphitization as well, ask NAURA to specify it as a separate process.
General illustration of wafer processing equipment, not a photograph of this model. Ask the manufacturer for current photographs and layout drawings of the configuration offered.
START WITH YOUR PRODUCTION TASK
Get a current written temperature and process specification from NAURA, describe your incoming graphite or felt and the impurity levels you need, then accept the furnace on measured purity and how well the parts keep their properties.
SOURCE-LINKED DATA
Published specifications
Values below are published by the manufacturer, each with the date its source was checked. Ask for the figures that apply to your configuration and material in the quotation.
The manufacturer has not published a complete specification table for this entry. Request the exact offered drawing and operating limits.
01 · Manufacturer information
What the CONAL VH treats and how
NAURA offers the CONAL VH for high-temperature purification of graphite structural parts and felt used in semiconductor and photovoltaic manufacturing. Gas enters through multiple inlets, process and protective flows are controlled separately, and a porous distributor spreads the reaction gas. Heating is zoned and loading runs continuously under automation. Ask for residual impurity levels, strength after treatment and dimensional change on parts like yours.
The page gives two different maximum temperatures: 2400°C with ±5°C uniformity in the Chinese text, and 1900°C in the technical table. The English heading also says graphitization where the Chinese text says purification. Ask NAURA which temperature and which process apply to the configuration in your quotation.
02 · Manufacturer information
CONAL VH figures, including the two maxima
| Item | NAURA wording | What to ask for |
|---|---|---|
| Maximum in the text | 2400°C | A written statement of the temperature your unit is built for. |
| Maximum in the table | 1900°C | Which of the two figures is correct for your configuration. |
| Uniformity in the text | ±5°C | Test method, temperature and whether the zone was loaded. |
| Working dimensions | 600 L × 600 W × 600 H mm | Carrier size and clearances for your parts and gas flow. |
| Process name | Purification / English graphitization | The exact operation offered and the material result it delivers. |
03 · PVYard procurement analysis
What to send with your enquiry
Your carbon parts
Give graphite grade or felt type, sizes, load pattern and starting contamination, and say which hot-zone part each piece becomes. Purified graphite that also needs a silicon carbide coating can go on to NAURA's VERAL GH coating furnace.
Target result
List the impurities and test methods, sampling points, allowed dimensional change and the mechanical properties you must keep.
Temperature answer
Ask NAURA to settle the 2400°C and 1900°C figures and describe how uniformity is tested in a loaded zone.
Process scope
Get the gas and protective flow plan, exhaust and abatement, load transport and service duties for the purification route you agree.
04 · PVYard procurement analysis
Accepting the furnace on purified parts
Agree the specification
Sign off the operation, temperature limit and usable loaded volume.
Test incoming stock
Measure starting impurities and part properties on traceable batches so you have a baseline.
Test treated stock
Check the agreed impurities, dimensions and properties on parts from different positions through a continuous run.
Sign off operation
Record good output, consumables, stoppages and the handling and service NAURA provides for your load.
05 · PVYard procurement analysis
Questions buyers ask about the CONAL VH
Is the maximum 2400°C or 1900°C?
The page lists both. Ask NAURA to state the guaranteed figure for your configuration in the quotation.
Can it graphitize as well as purify?
Only the English heading says graphitization. If you need it, ask NAURA for a separate graphitization specification and results.
Will a high temperature guarantee purity?
Purity is measured on the parts. Set impurity targets and property limits and test treated samples against them.
TURN THIS INTO A CLEAR REQUEST
Ask about this product
Include the product-specific questions above and replace every bracket with your actual requirement. Save your edited text to your sourcing brief, then review it before submitting an enquiry. Saving a brief does not send it to a manufacturer.
Sources
Manufacturer information and our buying guidance are labelled section by section above. Each source below shows the date it was checked.
NAURA Vacuum Tech CONAL VH product page ↗
Source check: 2026-10-11 · Covers the CONAL VH purification duty, gas and heating design, both temperature figures and the 600 mm working zone, with a furnace image.