Hot Isostatic Pressing (HIP) is a process to densify powders or cast and sintered parts in a furnace at high pressure (100-200 MPa) and at temperatures from 900 to 1250°C for example for steels and superalloys. The gas pressure acts uniformly in all directions to provide isostropic properties and 100% densification.

Its positioning is very complementary to other powder metallurgy (PM) processes such as Metal Injection Moulding (MIM), pressing and sintering, or additive manufacturing technologies. It is even used in combination with these PM processes for part densification and the production of semi finished bars or slabs.

HIPs capabilities include large and massive near net shape metal components such as oil & gas parts weighing up to 30 tonnes, or net shape impellers up to one metre in diameter. Equally it can be used to make small PM HSS cutting tools, such as taps or drills made from PM HIP semi-finished products, which can weigh less than 100 grams, or even very tiny parts such as dental brackets.

As a result, HIP has developed over the years to become a high-performance, high-quality and cost-effective process for the production of many metal (or ceramic) components.

For more information on Hot Isostatic Pressing, EPMA has a short introduction here.

Date: July 16-20, 2018
Location:
Coventry, UK

Academic Partner: Manufacturing Technology Centre
Industrial Partner:
Bodycote Hot Isostatic Pressing AB

 

Date

Session

Details

16 July

Introduction

An introduction to the MTC including a workshop tour. An overview of the training schedule and content.

 

Introduction to HIP

Overview of process including powder-HIP (PHIP) and HIP diffusion bonding, application sectors, products and materials.

 

HIP Metallurgy

Comparing HIP properties to wrought products, key differences in microstructure, PPB's, surface diffusion from canisters, etc.

 

Health and Safety

H&S considerations in general, with focus on PHIP, including risks associated with powder, safe storage and handling and PPE.

 

Horizontal Topic 1

Designing for HIP

HIP canister design rules and methodology, upscaling for compaction, removing parts, etc.

 

Group Exercise HIP

Canister Design.

17 July

HIP Encapsulation

Principles of HIP encapsulation, including welding leak-checking, filling, vibration, degassing and best practices

 

HIP Equipment and Process

Vessels, infrastructure equipment, heating cooling and quenching and powder characterisation.

 

Introduction to FEA

An overview of FEA techniques and applications.

 

Horizontal Topic 2

HIP Cost Modelling Canister manufacture methodology and cost modelling.

 

Group Exercise

H&S Exercise on assessing best practice, risk assessment, COSHH and PPE

 

Group Exercise

Costing modelling based on design choices and canister manufacture method used.

 

Practical Exercise

Failure Analysis and Mitigation PFMEA failure mode analysis for PHIP (Process, design and material).

18 July

Practical Work Day

Tour of the HIP facilities at the MTC Laboratory work for 2 groups covering the different stages of HIP

19 July

Plant Visit

Visit to Bodycote HIP, including work done in the plant.

20 July

HIP Modelling

Introduction to HIP compaction modelling.

 

NDE Overview of different

NDE methods and capabilities, including ultrasonic inspection and X-CT.

 

Emerging technologies

Future technology and emerging trends in PHIP (Materials, processes and products).

 

Exams and Debriefings

Exam group 1 / debriefing group 2 Exam group 2 / debriefing group 1

 

Debriefing of the Week and Closure

 

Other Modules