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Dewaxing Autoclaves

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Dewaxing Autoclaves
Dewaxing Autoclaves

Design and fabrication of complete dewaxing systems that meet exact end user requirements is our specialty. From simple manually operated autoclaves to completely automated self-contained autoclaves, different types of systems are custom developed by us. Although autoclaves can be built to virtually any size, the common sizes that we produce range from 3' to 6' in diameter and 3' to 8' in length.

Each dewaxing autoclave is unique and warrants special attention in the preliminary design stage to ensure efficient operation, maintainability, and operational safety. For operational safety, we provide a unique door safety interlock mechanism, which uses redundant mechanical, electrical, hydraulic, and pneumatic devices. These devices offer complete protection against accidents such as opening of the door when high pressure builds up. Our autoclaves offer optimal performance even in the shortest cycle times.

Designed to suit your specific load and processing requirements, our dewaxing autoclaves also come with auxiliary support equipment such as a steam boilers and wet or dry steam accumulators. With extensive experience, we refine our standard design concepts to consistently provide a precision piece of equipment. Our steam-injected autoclaves are common in the industry and known for their user-friendly operation.

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Dewaxing Autoclave Open Door
Dewaxing Autoclave Open Door
Dewaxing Autoclave Closed Door
Dewaxing Autoclave Closed Door

PDFDewaxing Autoclave Brochure (PDF - 1.15MB)

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Dewaxing Autoclaves Specifications

Autoclave Specifications

Pressurizing Medium Air
Heating Methods Electric
Standard Features
  • Encapsulated blower motor eliminates the high maintenance necessary for through the vessel shaft sealing.
  • Proprietary blower motor design allows operation at any combination of pressure and temperature.
  • Engineered circulating fan assures excellent heat transfer to the load and exceptional temperature uniformity.
  • Proprietary method of placing and securing insulation minimizes heat loss through the pressure vessel and minimizes operating costs.
  • Location of typical electrical heating unit is shielded by cooling coil to prevent radiant heating of load.
  • Cooling coil is a single pass heat exchanger designed for precise temperature control with ample provisions for thermal expansion to minimize thermally induced stresses and failure.
  • "Man-Inside" emergency alarm cables are provided on larger autoclaves, which allows operator to completely disable all autoclave sub-systems. It requires autoclave door to be opened to reset the alarm.
  • Load track and floor is designed to allow for thermal expansion yet provide full structural support.
  • ASME approved safety relief valve and rupture disc are provided on separate vessel penetrations to assure independent and safe operation. Many other redundant safeties are incorporated to assure operator and equipment protection.
  • Most vessel penetrations, such as vacuum, thermocouple and cooling are built into removable and replaceable ANSI flanges. This allows easy modification or repairs without compromising the structural integrity of the vessel.
Harris Quick Opening Door Features
  • This proprietary breech lock door allows full and easy access to the autoclave interior within one minute after completion of a curing cycle.
  • Safety is inherent in its design, but we also include mechanical, hydraulic, electrical, and pneumatic interlocks to prevent door operation while the autoclave is pressurized.
  • No relative motion of the door with respect to the pressure seal provides long o-ring life.
  • An oxygen sensor/fresh air purge safety interlock is available to prevent opening the door unless safe levels of oxygen are present. This complies with recent OSHA rulings.

Instrumentation Options

Control Capabilities Multiple Equipment Computer Control Monitoring
Recording with Backup
Control Options
Manual Controls
Network Compatible Computer-Based Control Systems
Programmable Microprocessor-Based Controls Systems
Set Point Controls
Recording Options
Circular Chart
Data Logger Recorder
Strip Chart
Vacuum Control Types Automatic
Vacuum Monitoring Options Gauges

Auxiliary Systems

Options Available
Vacuum Pump/ System
Lift Tables
External Cooling System
Oxygen Sensor Interlock
Process Controls
Related Safety Equipment
Cooling Systems
Steam Separators
Storage Tanks
Safety Features
'Operator-Inside' Alarms
Blower Motor Cooling Alarms
Door Safety Interlocks
Over-Pressure and Over-Temperature Protection Options


Analysis of Equipment
Design and Engineering
Non-Destructive Field Testing
Training for New Systems
Support Services Complete Turnkey Installation
Freight On Board (FOB) Factory Services
On Site Start-Up/Operation/Maintenance Training

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Melco Steel, Inc. | Autoclave Process System | Designers • Engineers • Fabricators