Hot Isostatic Pressing (HIP) is a special heat treatment process for metal or ceramic materials, and is an important means of preparing high-performance materials. This process technology can be used for powder metallurgy forming or densification treatment of castings (such as titanium alloys, high-temperature alloys, aluminum alloys, etc.) after forming. After hot isostatic pressing treatment, the wear resistance, corrosion resistance, and mechanical properties of the material will be greatly improved, and the fatigue life can be increased by 10-100 times.

1) Processing characteristics:

High temperature; Up to 2000 ℃

High voltage; Up to 200 MPa maximum

Isostatic pressure; Using inert gas as the pressure transmission medium, the same pressure is uniformly applied to the surface of the component from all directions

2) Main application material system:

High temperature alloys, titanium alloys, aluminum alloys, copper alloys, refractory metals, hard alloys, stainless steel, corrosion-resistant alloys, ceramics, composite materials, electronic materials, functional materials, etc.

3) Why use Haoyue hot isostatic pressing?

The Haoyue I series hot isostatic press can greatly improve the mechanical properties of materials, increasing their fatigue life by 10-100 times. Any product made of materials has a certain service life and cannot be used indefinitely. There are two fundamental reasons for material failure. One is that the internal structure of the material changes, that is, due to external environmental interference, the composition of the material changes, and the new composition cannot achieve the appropriate performance, causing the material to fail immediately; Another more common reason is that residual impurities, small cracks, pores, etc. inside the material form performance mutation points, which we call material defects. During the working state of the material, such as high-temperature cycling and stress cycling, stress concentration effects will occur at the location of the performance mutation, and ultimately fatigue diffusion will occur at that point, causing the material to fracture and fail. At present, any traditional molding method cannot directly eliminate the residual defects inside the material, and subsequent processing is required.

Of course, in a conventional work environment, there is no need to place excessive demands on the performance of materials, and some defects are allowed to exist without affecting the use of materials. However, in certain special working environments, such as aircraft engines, nuclear reactors, heavy-duty gas turbines, and underwater oil extraction, materials need to withstand extremely high temperatures, pressures, amplitudes, or corrosive environments. At this time, the performance requirements for materials are also extremely high, not only requiring ultra-high strength, toughness, corrosion resistance, but also extremely high stability. At this point, eliminating internal defects in the material becomes particularly important.

Hot isostatic pressing, as a special metal heat treatment process, is currently the most effective heat treatment method to eliminate internal defects in materials and the material forming method to minimize internal defects. Therefore, hot isostatic pressing is a routine machining step for important key components in various fields worldwide.

4) The main application areas of hot isostatic pressing are divided into three categories:

Densification treatment: eliminate internal defects in the product to achieve theoretical density

Diffusion bonding: Integrating two or more metals

Hot isostatic pressing powder metallurgy: HIP powder forming, high performance, low cost