How Does Hot Press Furnace Work?

Outline

Hot presses are furnaces to form materials by pressing under high temperature in high vacuum or inert gas atmosphere. Since our first model in , IHI has been developing and improving hot presses to meet user’s demand for upsizing, higher pressing force and higher productivity.
IHI hot presses are applicable for both sintering, where powder is filled into a graphite molds to form target materials, ceramic materials and electronic materials, and diffusion bonding, to bond or form metal, ceramics and composited materials.
As a new field, we have also developed a hot forming press machine for press forming and superplastic forming of metallic plates using hot dies.

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Multi-Axis Hot Press for Diffusion Bonding

Features

Various combination of multiple rams can be selected (2, 4, 6, 8, etc.)

Proven record of up to 24 rams

Selection from synchronized control of multiple rams / single-axis control for each rams

Uniform surface pressure and stable pressing performance

Excellent temperature uniformity by zone division

Profile

A machine designed for bonding and formation of various materials through high-temperature press treatment of charged work for use in heating chambers.

Applications

• Diffusion bonding: heat exchangers, heat sinks, and molds
• Soldering: aluminum and copper heat sinks
• Formation treatment

Standard specifications

Hot press for diffusion bonding - single-axle type

Features

A press frameless, compact, lightweight structure

Assurance of uniform surface pressure and stable press performance

Excellent temperature distribution based on optimal heater design

Profile

A machine designed for bonding and formation of various materials through high-temperature press treatment of charged work for use in heating chambers.

Applications

• Diffusion bonding: heat exchangers, heat sinks, and molds
• Soldering: aluminum and copper heat sinks
• Formation treatment

Standard specifications

Hot press for sintering

Features

Ability to cope with a wide range of temperature zones, from low temperatures on the level of 1,000C for target materials to high temperatures on the level of 2,500C for ceramics

Assurance of excellent soaking even with large-scale work such as large-diameter molds and high-back multistack molds

Extensive record of actual use for large-scale, high-surface-pressure work C/C molds

Assurance of uniform surface pressure and stable press performance

Ability to meet needs for high pushing force on the 10,000 kN level and high surface pressure on the 70 MPa level

Adoption of a system for pressing from above and below unique to IHI for thick work and multilayer work

Excellent temperature distribution based on zone divisions

Ability to deliver the desired cooling matching the particular process, based on program cooling and pressurized cooling systems

Profile

This furnace is to create sintered bodies by pressing raw material charged into graphite molds in a heated chamber, at high temperature and high pressure.

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Applications

• target materials
• ceramic materials and electronic materials

Available specifications

Hot Press Furnace systems (HP) allow for the precise application of hydraulic pressing force and simultaneous high temperature operation. Typical uses for hot press include sintering of metal or ceramic powders and diffusion bonding of solid components. The furnace systems are comparable to our High Temperature Graphite, Hydrogen Furnaces, and Advanced Processing Furnace product lines, with a range of hot zone materials available. All HP systems utilize state of the art hydraulics for extremely high precision force and/or position control. Automatic operation is conducted by PLC based control utilizing a touch screen HMI. Automatic hydraulic safety systems limit force application while the furnace chamber is open to mitigate die breakage and operator injury, in addition, two-hand operation is required for all manual motion control to prevent pinch hazards.

Standard hot press furnace sizes are available up to 2,000 kN (204 Ton), larger units are available and are custom built to the specific application, please contact us for details.

Standard Hot Press Furnace Product Features

• Maximum Pressing Temperature: 2,500°C
• Vacuum (10^-3 Torr range) and Inert gas (Ar, He, N2) operation.
• Fully automatic operation by PLC and touchscreen HMI.
• Simultaneous temperature and pressure control.
• Thermocouple and Pyrometer based temperature control.
• Rapid vacuum cycling: typical <10min
• Water flow and furnace overtemperature system protection

Common Optional Upgrades

• Increased throughput vacuum pump
• High vacuum pumps (Diffusion, Turbo, Cryo)
• Glovebox integration for reactive or hazardous materials
• Gas quenching systems for rapid cooling
• Combustible gas safety system (Hydrogen, Methane, ect.)

Hot Press Furnace Product Examples

Standard Vacuum Hot Press Models

Larger Models Available. Contact for Details.

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