Hot Isostatic Presses the Avure way

HIP. Supporting the Casting Industry

HIP. Supporting the Casting Industry

For decades, Hot Isostatic Pressing (HIP) has been used successfully by manufacturers around the world. HIP is used to eliminate pores and remove casting defects, i.e. oxides and carbides, to dramatically increase the material properties.

WITH TYPICAL PRESSURES from 400 to 1035 bar (5,800 to 15,000 psi)and temperatures up to 1,150°C (2,100°F), HIP can achieve 100% ofmaximum theoretical density and improve the ductility and fatigueresistance of critical, high-performance materials. The componentsare often of net shape or near net shape configuration.

A proven process for high-performance partsCommon applications for Hot Isostatic Pressing include defect healingof castings, consolidation of Titanium powder and diffusion bondingof dissimilar metals or alloys. The technology is expanding into newapplications such as very large castings as well as heat treatment of Aluminium components by T6 or hardening of iron-based materials by modifying the HIP gas mixtures.

Stacking of engine blocks in aluminium Photo courtesy of Bodycote

WHy you SHould HIP:

~100% of theoretical density » Longer life time » Predictive life time » Lighter and/or low weight designs

Improved material properties » Increased mechanical properties e.g. fatigue, wear, abrasion and elongation » Reduced scatter » Increased corrosion properties

More efficient production » Decreased scrap loss » Less NDT

Common applications include:» Defect healing of castings» Consolidation of powder metal and ceramic parts» Diffusion bonding

HIP is expanding into new applications such as:» Very large castings» Very large HIP clad P/M to solid or P/M to P/M wear components» Metal injection molded parts» Large P/M parts to replace extended-delivery forgings

HIP and Heat Treatment simultaneously

PORE ELIMINATION OF ALUMINIUM gives dramatic effects of the fatigue life when it comes to stress levels and number of cycles before failure. Up to 10 times improvement can be achieved by HIPing in the right conditions. By applying right conditions in the HIP, post-treatment steps like T6 and ageing, the total cycle times can be shortened with 50%.

Improving parts for the aerospace industryOf all the HIP installations in the World, more than 50% is utilized to consolidate and improve the material properties of Titanium and Super-alloys for the aerospace industry. Today HIP is the standard procedure to give longer and predictive life time of the fan blades in an aircraft engine. Regardless of alloy system, HIP is the way forward for optimized material properties and save cost for a safe and efficient production with high quality.

HIP quenCHIng vAlueS:

Controlled cooling rates up to 3,000°C/min can be achieved by combining possibilities of pressure and temperature control that the uRq can offer: » Heat treatment steps can be included into the HIP cycle » Process steps can be removed from the usual process route to increase productivity and lower cost/kg

Benefits compared to conventional heat treatment methods: » Programmable temperature distribution with good accuracy » Reduced thermal stresses » Reduced cracking

new and unique materials can be achieved » Material optimization » Improved fatigue and ductility

Avure’s optional Uniform Ultra Rapid Cooling (U2RC) and Quench (URQ) furnaces can provide decreased cycle time, higher productivity, and even combined HIP and heat treating. Benefits are reduced energy consumption and the material is ready for following production steps, i.e machining, painting, etc.

IMPROVING PARTS FOR THE AEROSPACE INDUSTRYCourtesy of Bodycote

Cycles x 1,0000 100

50

100

150

200

1,000 10,000

Stresslevel MPa

100 MPax 10

70 MPa

before HIP after HIP

THERMAL TREATMENT FOR ALUMINIUM PROCESSINGPicture from Matthew M. Diem.

Time

Temperature

with HIPwithout HIP

IndependentHIP dwell

Independent solutiondwell and quench

CombinedHIP andsolution heattreat dwelland quench

Age

Age

2014

03-0

2-22

2E

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For more information please visit: http://industry.avure.com

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With more than 50 years of experience and expertise, Avure Technologies is un-matched in the design of world-class high pressure presses.

Avure has an installed base of over 1,700 systems world-wide, including: sheet metal presses (Flexform), isostatic presses (hot and cold), high tonnage ram presses and food presses. All products and services leverage our in-depth expertise in delivering the finest high pressure solutions.

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