HIP Resources

Hot Isostatic Pressing (HIP) is one of the answers to solving complex casting and manufacturing needs.  

 

HIP is a production process of unique benefit in the precision casting, powder metal, metal bonding and metal injection industries. HIP improves the performance and yield of precision castings. HIP consolidates powders of metal, ceramics, or carbides into fully dense, complex parts with net or near net shapes. HIP is also used for diffusion bonding similar and dissimilar materials and for applying wear or corrosion resistant coatings to parts exposed to stringent operating conditions.

 

Hot Isostatic Pressing is a process in which components are subjected to the simultaneous application of heat and high pressure in an inert gas medium. The pressure is uniform in all directions or “isostatic”. Using Hot Isostatic Pressure, the material is changed, in simpler terms, to a “plastic state” which collapses the voids. The clean surfaces of the voids bond together making the components or parts stronger. In most cases, voids that were collapsed do not change or alter the shape of the parts or components.

 

Hot Isostatic Pressing results in startling improvements in material’s mechanical properties, resulting in significant reduction of scrap losses, decreased rework and weld repair. Of high significance is the marked reduction in the statistical spread or scatter usually associated with the cast material properties. The net result is improved reliability and efficiency of material utilization in cast components.

Education is a priority at Kittyhawk Products.  Here on our website you will find information needed to make informed decisions about Hot Isostatic Pressing (HIP) in your business.  Our technical experts remain available for consultation and will help evaluate and acquaint you with the benefits of Hot Isostatic Pressing.

Videos

Publications

Presented at PM2010 World Congress in Florence, Italy by Dennis Poor, President of Isostatic Pressing Association (IPA) & Kittyhawk Products

Dr. Rickinson BMet, PhD, CEng., MIM Technical Director of HIP (Powder Metals) Ltd.

FAQs

What is Hot Isostatic Pressing (HIP)?


Hot Isostatic Pressing is a process in which components are subjected to the simultaneous application of heat and high pressure in an inert gas medium. Using “hot isostatic pressure,” the material is changed, in simple terms, to a “plastic state” which collapses the voids. The clean surfaces of the voids bond together making components or parts stronger. In most cases, this does not change the shape of the parts.




What gets HIPed?


  • Turbine and airframe components.
  • Metal matrix composites and cladding.
  • Powdered metal billets.
  • Medical implants.
  • Engine run components. (Rejuvenation)
  • Any metal based products that require integrity, or premium surface finishes.
  • Assemblies requiring Diffusion Bonding.
  • High pressure valves and pumps.
  • Automotive parts.
  • Recreational parts that require premium surface finishes.




Why use HIP?


The HIP process not only results in higher quality and improved mechanical properties, but it accomplishes this at greatly reduced costs. Tooling is simple and inexpensive, scrap is dramatically reduced and machining is minimized. Savings also result from the rejuvenation of old parts. Additionally, because HIP is not size or shape dependent and can be used on a wide variety of materials, it allows for increased design flexibility.




What are the benefits of HIPing?


  • Create high-strength bonds.
  • Improve mechanical properties.
  • Improve fatigue life.
  • Remove internal porosity.
  • Improve the x-ray standard.
  • Improve property scatter.
  • Reduce rejection rate.
  • Reduce scrap losses.
  • Improved machine surface quality.
  • Reduce machining and weld repair.




How long is the turnaround time?


Kittyhawk Products not only provides the best customer service, but we offer the fastest turnaround time in the HIPing industry averaging 3 to 6 days.




How is pricing established?


Pricing is based on size and/or weight, what kind of material and at which cycle your parts need to process. Combining or “piggybacking” your part with other customers that process at the same cycle will produce significant cost savings. Bulk prices per pound start as low as $2.25. Full load pricing is based on the operational cost of the unit on a per cycle basis.




What materials can be HIPed?


  • Aluminum
  • Copper
  • Powder
  • Steel
  • Superalloy
  • Titanium





 

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