DTI-1239 Inert Atmosphere Batch Oven
Customer directive
Our customer wanted to create an indexing single part flow inert atmosphere production furnace system to match, and seamlessly integrate into, the customer’s entire existing manufacturing process at a production rate of 45 seconds part to part. The customer’s then existing process included inefficient batch furnace staging of parts at this point in the process.
Description
The DTI-1239 inert batch oven is used to dry aluminum parts. The oven is a top load type oven and parts are placed in a basket for drying. The oven door is pneumatically actuated and opens and closes automatically.
The sequence of operation for the oven is as follows:
- The hinged door opens
- An automated transfer system places the basket of parts in the drying chamber
- The hinged door closes
- The high-flow nitrogen system purges the oven chamber based on a predetermined time.
- Once the chamber is purged to the correct atmosphere the nitrogen system changes to constant low-flow and maintains the chamber atmosphere for the duration of the drying cycle.
- The chamber is then heated to 150⁰F and the timed drying cycle will be completed.
- Upon completion of the drying cycle the heat is turned off and a cooling cycle begins. The nitrogen flow can be changed to high-flow during cooling to decrease the cooling cycle.
- Upon completion of the cooling cycle the nitrogen flow is stopped and the chamber is purged to remove the nitrogen.
- The door opens and the basket of parts is removed by the automated transfer system.
- The process is then repeated.
Specifications
| Overall dimensions | 3′-1″ L x 4′-2″ W x 3′-0″ H (940mm x 1270mm x 914mm) |
| Interior dimensions | 1′-6″ L x 1′-2″ W x 1′-6″ H (457mm x 356mm x 457mm) |
| Insulation thickness | 2″ (51mm) |
| Heat source | Single electric heater controlled by SCR |
| Maximum operating temperature | 200°F (93°C) |
| Operating temperature | 100°F to 200°F (38°C – 93°C) |
| Airflow | Horizontal cross flow |
| Operating voltage | 480V / 3-phase / 60-hertz |
| Control | Set point temperature controller with Ethernet communications |
| Fans | One (1) circulation fan |
| Miscellaneous | Oven utilizes flow meter to control the flow rate of inert gas entering the chamber. Oven also utilizes a pressure gauge for monitoring chamber pressure. |
Alternative capabilities
Davron Technologies, Inc. provides process specific industrial inert atmosphere oven applications, including the following:
- Industries Served: Automotive, Pharmaceutical / Medical, Aerospace, Glass, Composites
- Materials/Parts Processed: Castings, Glass, Plastics, Steel, Engine Components, Cast Steel/Aluminum
- Process Applications: Inert Stress Relieving, Inert Atmosphere Annealing, Inert Atmosphere Batch, Inert Atmosphere Conveyor/Continuous
Features
Inert Atmosphere Batch Oven Construction Features
- The oven interior is constructed of 316L stainless steel
- The framework and exterior of the oven is constructed of 304 stainless steel
- The oven utilizes 2” of insulation
- The interior seams of the oven is seal welded to prevent atmosphere contamination
- The oven door is pneumatically actuated
- The airflow within the drying chamber is a horizontal cross flow with heated air being supplied from both ends and returns to through the floor of the oven chamber.
- The oven features a pressure relief system
- All inert gas piping is included
- All inert gas valves are medical gas type valves and are cleaned and bagged
