Purpose of Air Flow During Heat Treatment
A popular feature among our range of new and used ovens, air circulation is essential for many heat treatments and processes, but it isn’t necessary for all.
One of the primary purposes of an industrial oven is to remove moisture using the method of high temperatures; with or without an air circulation system, it can still be achieved. However, it does impact the efficiency of the process, especially for applications/treatments that require precision heating.
As one of the standard process parameters of surface heating, including temperature set point, fan speed and direction of airflow, continue reading to find out if air circulation is essential for your production.
Maintaining Temperature Uniformity Inside an Industrial Oven
Airflow (plus the direction it flows in) can significantly improve the temperature uniformity within the oven chamber, with higher airflow generally resulting in a greater heat consistency.
In general use ovens, the standard temperature uniformity in an oven is +/- 10°C, but this tolerance can be as precise at +/-1°C with the correct air circulation. A tighter temperature uniformity can be achieved by increasing the airflow for an increased rate of air circulation per minute.
To meet the circulation demand to achieve these finer temperature margins, motors and fans would be installed on the oven to move the air around the oven manually.
Types of Airflow Patterns and What Are They Used For?
A feature built in as part of the functional design, the airflow direction inside an industrial oven can determine what processes or components the oven is used for. The airflow pattern options are either vertical, horizontal or a combination; specific patterns lend themselves more beneficial to certain types of ovens. Examples include conveyor ovens favouring vertical airflow while batch ovens are frequently horizontal.
The airflow direction is chosen to minimise obstruction by the treated components, considering whether the parts are hung or laid flat on different types of shelving.
- If the components are hanging or on solid shelving, the airflow direction would be horizontal. Beneficial for heat processes that take place in a batch oven with high volumes of components, this airflow pattern is still able to get around all the trays of components.
- A vertical airflow would be common in general use and laboratory ovens, perfect for smaller components. These components are typically hung vertically or laid flat on metallic mesh shelves, allowing airflow to travel through the layers or components.
- Combining the two directions for a horizontal/vertical airflow, the dual airflow direction is suitable for the larger surface areas of large components during heat treatment.
For each airflow pattern, inflow and outflow holes would be located within the chamber walls to manage the airflow direction.
Ovens with No Airflow Systems
Having looked into the purposes of having an airflow circulation system inside your oven, many processes do not need the feature.
A type of oven that has nothing to gain from airflow circulation is a gravity convection oven. Designed for processes where air circulation would disturb or potentially impair/damage delicate components, these ovens have a lower temperature uniformity when compared to air-circulated ovens. If a process doesn’t need high precision heating like drying, curing, baking and pre-heating, convection ovens are frequently a more affordable option.
Gravity convection ovens rely on the natural air movement inside the chamber to distribute heat directly from the oven's heating elements rather than forced air circulation.
What are the Pros & Cons of Air Flow Systems in Ovens?
A popular but optional feature for industrial ovens, forced air circulation can greatly benefit many heat treatments but may not always be needed.
| Pro | Con |
|
|
Our Range of Industrial & Laboratory Ovens
If your production would benefit or not from forced air circulation, we have the ovens to cater to both.
Our used range of machines stocks a wide variety of ovens, some with forced air circulation and some without; why not check out what we have to offer?
Or if you're looking to invest in a new machine, we have no shortage of available models. The mainstay of our oven ranges use forced air circulation, but we have convection ovens available too. With a variety of features for various temperatures, we can provide you with the oven you need precisely to your requirements.
If you know your heat treatment requirements but are unsure which oven to go for, contact our sales team at 01922 45 8000 and we can help you.
JLS (Redditch) Ltd Rapid Quench 550°C Electric Oven
This JLS 550°C, electric, front loading, rapid quench oven is a forced convection type oven with re-circulating air. With a calibrated work area of 1100mm x 2300mm x 1100mm, this NADCAP & AMS2750D (± 6°C) standard oven was previously used for annealing components to an aerospace specification.
- Stock No
- AEF200
- Category
- Industrial Ovens
- Model
- JLS (Redditch) Ltd Annealing Treatment Oven
- Year of Manufacture
- 2008
- Internal Size (WxDxH mm) [?]
- 1400 x 2500 x 1200
- Max Temp
- 550°C
- Other Info
- Rapid Quench
- Condition
- Seen working by RSW, Excellent Condition
- Location
- Bolton, Greater Manchester, UK
- Price [?]
- Please call on +44 (0) 1922 45 8000
- Part of a Direct Site Clearance
- Aeroforma – Preliminary Announcement
JLS (Redditch) Ltd 300°C Precipitation Hardening & Ageing Oven - AMS2750D
JLS precipitation hardening & ageing, forced convection oven built to AMS2750D & Nadcap class 2 (± 5°C) standard, previously used for the heat treatment of aluminium aerospace components and last calibrated November 2024.
- Stock No
- AEF300
- Category
- Industrial Ovens
- Model
- JLS (Redditch) Ltd Precipitation Hardening & Ageing Oven
- Year of Manufacture
- 2008
- Internal Size (WxDxH mm) [?]
- 1200 x 2500 x 1200
- Max Temp
- 300°C
- Other Info
- Calibrated November 2024 ± 5°C @ 200°C
- Condition
- Seen working by RSW, Excellent Condition
- Location
- Bolton, Greater Manchester, UK
- Price [?]
- Please call on +44 (0) 1922 45 8000
- Part of a Direct Site Clearance
- Aeroforma – Preliminary Announcement
Riley 300°C Superior Laboratory Oven Range
A range of vertical ovens from 50-240 litres that operate at up to 300°C. Ovens are lined with a stainless steel chamber and include a fan and digital controls.
- Stock No
- NEW060
- Category
- Laboratory & Bench Top Ovens
- Model
- Riley GPS-OV Full Range
- Internal Size (WxDxH mm) [?]
- From 50-240 litres
- Max Temp
- 300°C
- Other Info
- British Made
- Availability:
- Available subject to build time
- Price [?]
- Please call on +44 (0) 1922 45 8000
Riley 250°C Laboratory Oven Range
A range of vertical ovens from 30-350 litres that operate at up to 250°C. Ovens are lined with a aluminised clad steel chamber and include a fan and digital controls.
- Stock No
- NEW061
- Category
- Laboratory & Bench Top Ovens
- Model
- Riley GP-OV Full Range
- Internal Size (WxDxH mm) [?]
- From 30-350 litres
- Max Temp
- 250°C
- Other Info
- British Made
- Availability:
- Available subject to build time
- Price [?]
- Please call on +44 (0) 1922 45 8000
Riley 300°C Heavy Duty Vertical Oven Range
A range of heavy duty ovens from 200-1000 litres that operate at up to 300°C. Ovens are lined with a stainless steel chamber and include a fan and digital controls.
- Stock No
- NEW062
- Category
- Laboratory & Bench Top Ovens
- Model
- Riley HDV-OV Full Range
- Internal Size (WxDxH mm) [?]
- 200 - 1000 litres
- Max Temp
- 300°C
- Other Info
- British Made
- Availability:
- Available subject to build time
- Price [?]
- Please call on +44 (0) 1922 45 8000
Riley 300°C Heavy Duty Horizontal Oven Range
A range of horizontal heavy duty horizontal ovens with twin doors that operate at up to 300°C. Ovens are lined with a stainless steel chamber and include a fan and digital controls.
- Stock No
- NEW063
- Category
- Laboratory & Bench Top Ovens
- Model
- Riley HDH-OV Range
- Internal Size (WxDxH mm) [?]
- 425 litres
- Max Temp
- 300°C
- Other Info
- British Made
- Availability:
- Available subject to build time
- Price [?]
- Please call on +44 (0) 1922 45 8000
SNOL 350°C Industrial Oven Range
350°C general purpose batch ovens, ideal for a vast range of low temperature thermal processes such as drying, curing and pre-heating.
- Stock No
- NEW070
- Category
- Industrial Ovens
- Model
- SNOL
- Internal Size (WxDxH mm) [?]
- Various
- Max Temp
- 350°C
- Condition
- Brand New
- Availability:
- Available subject to build time
- Price [?]
- Please call on +44 (0) 1922 45 8000
SNOL 650°C High Temperature Oven Range
General purpose high temperature, industrial, batch ovens which set the standard for a wide range of industrial processing applications
- Stock No
- NEW071
- Category
- Industrial Ovens
- Model
- SNOL
- Internal Size (WxDxH mm) [?]
- Various
- Max Temp
- 650°C
- Condition
- Brand New
- Availability:
- Available subject to build time
- Price [?]
- Please call on +44 (0) 1922 45 8000
SNOL 650°C High Temperature Oven with Powered Door
General purpose high temperature, industrial, batch oven suitable for a wide range of industrial processing applications. Includes a vertical powered door.
- Stock No
- NEW072
- Category
- Industrial Ovens
- Model
- SNOL
- Internal Size (WxDxH mm) [?]
- 600 x 750 x 900
- Max Temp
- 650°C
- Availability:
- Available subject to build time
- Price [?]
- Please call on +44 (0) 1922 45 8000
SNOL 300°C Laboratory Oven Range
A range of laboratory ovens 120-420 litres that operate at up to 300°C. Ovens are lined with a stainless steel chamber and include a fan and digital controls.
- Stock No
- NEW075
- Category
- Laboratory & Bench Top Ovens
- Model
- SNOL LSN11
- Internal Size (WxDxH mm) [?]
- Various
- Max Temp
- 300°C
- Condition
- Brand New
- Availability:
- Available subject to build time
- Price [?]
- Please call on +44 (0) 1922 45 8000
SNOL 300°C Laboratory Oven Range - All Stainless Steel
A range of laboratory ovens 120-420 litres that operate at up to 300°C. Ovens are lined with a stainless steel chamber, clad with stainless steel panels and include a fan and digital controls.
- Stock No
- NEW076
- Category
- Laboratory & Bench Top Ovens
- Model
- SNOL LSN11 ST
- Internal Size (WxDxH mm) [?]
- Various
- Max Temp
- 300°C
- Condition
- Brand New
- Availability:
- Available subject to build time
- Price [?]
- Please call on +44 (0) 1922 45 8000
SNOL Custom Build Furnaces & Ovens
Custom built ovens and furnaces to meet your project requirements and standards.
- Stock No
- NEW079
- Category
- Industrial Ovens
- Model
- SNOL
- Condition
- Brand New
- Availability:
- Available subject to build time
- Price [?]
- Please call on +44 (0) 1922 45 8000
Romer 200°C Industrial Oven Range
200°C general purpose, electric, batch ovens from 3.4m3 upwards. Ideal for a vast range of low temperature thermal processes such as drying, curing and pre-heating.
- Stock No
- NEW080
- Category
- Industrial Ovens
- Model
- Romer
- Internal Size (WxDxH mm) [?]
- Various
- Max Temp
- 200°C
- Other Info
- Touchscreen Control plus iCure Software
- Condition
- Brand New
- Availability:
- Available subject to build time
- Price [?]
- Please call on +44 (0) 1922 45 8000
Romer 200°C Convection Industrial Oven Range
200°C electric, batch ovens from 3.4m3 upwards. Without a fan' these ovens are a very cost effective option or ideal for delicate processes that cannot tolerate air movement.
- Stock No
- NEW081
- Category
- Industrial Ovens
- Model
- Romer
- Internal Size (WxDxH mm) [?]
- Various
- Max Temp
- 200°C
- Other Info
- Radiant heating
- Condition
- Brand New
- Availability:
- Available subject to build time
- Price [?]
- Please call on +44 (0) 1922 45 8000
Romer Essential Electric Oven Range
200°C general purpose, electric, industrial ovens from 3.4m3 upwards. Ideal for a vast range of low temperature thermal processes such as drying, curing and pre-heating. The Essential range is a cost effective solution where temperature recording is not required.
- Stock No
- NEW082
- Category
- Industrial Ovens
- Model
- Romer
- Internal Size (WxDxH mm) [?]
- Various
- Max Temp
- 200°C
- Condition
- Brand New
- Availability:
- Available subject to build time
- Price [?]
- Please call on +44 (0) 1922 45 8000
Machines & equipment for sale
- Surface Treatment
- Cleaning & Degreasing
- Polishing & Belt Linishing
- Mass Finishing
- Ovens & Furnaces
- Process Cooling
- Shot Blasting
- Dust & Fume Extraction
- Air Compressors
- Rectifiers & Transformers
- Miscellaneous
- Latest Stock
- Special Offers
- Direct From Site Clearances
- Auctions
- Brand New Machines
- Available Immediately
- Sell Your Machine
Machine Alert
Get the latest machines emailed directly to you as they become available to buy online. Sign Up Now
