A method of joining two components to form a product

A method of forming a product from a first component comprising a void region filled with a salt by joining the first component to a second component using pressure and then removing the salt by melting. Figure 1 shows an aerofoil blade 1 with a plurality of passages 3. The passages 3 are filled wit...

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Hauptverfasser:	XINHUA WU, MICHAEL LORETTO, WAYNE ERIC VOICE
Format:	Patent
Sprache:	eng
Schlagworte:	CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES FOUNDRY MOULDING MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER PERFORMING OPERATIONS POWDER METALLURGY TRANSPORTING WORKING METALLIC POWDER
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creator	XINHUA WU MICHAEL LORETTO WAYNE ERIC VOICE
description	A method of forming a product from a first component comprising a void region filled with a salt by joining the first component to a second component using pressure and then removing the salt by melting. Figure 1 shows an aerofoil blade 1 with a plurality of passages 3. The passages 3 are filled with a powdered salt 4 and then welded closed. An end of the blade 1 is located in an end of a mould 2 which is filled with a powdered alloy 6. The blade 1 and mould 2 are hot isostatically pressed, thereby sintering the powder 6 and joining it to the blade 1. The welds 5 are then opened and the salt 4 removed. Figure 2 shows powder preform 26 which comprises a cavity 23. A reinforcing box, web, rib or mesh 20 lies within the cavity 23, along with a salt 24. The perform 26 is hipped and then the salt 24 removed through a drain hole 28 drilled into the body. An alloy may be used instead of a salt.
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Figure 1 shows an aerofoil blade 1 with a plurality of passages 3. The passages 3 are filled with a powdered salt 4 and then welded closed. An end of the blade 1 is located in an end of a mould 2 which is filled with a powdered alloy 6. The blade 1 and mould 2 are hot isostatically pressed, thereby sintering the powder 6 and joining it to the blade 1. The welds 5 are then opened and the salt 4 removed. Figure 2 shows powder preform 26 which comprises a cavity 23. A reinforcing box, web, rib or mesh 20 lies within the cavity 23, along with a salt 24. The perform 26 is hipped and then the salt 24 removed through a drain hole 28 drilled into the body. 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Figure 1 shows an aerofoil blade 1 with a plurality of passages 3. The passages 3 are filled with a powdered salt 4 and then welded closed. An end of the blade 1 is located in an end of a mould 2 which is filled with a powdered alloy 6. The blade 1 and mould 2 are hot isostatically pressed, thereby sintering the powder 6 and joining it to the blade 1. The welds 5 are then opened and the salt 4 removed. Figure 2 shows powder preform 26 which comprises a cavity 23. A reinforcing box, web, rib or mesh 20 lies within the cavity 23, along with a salt 24. The perform 26 is hipped and then the salt 24 removed through a drain hole 28 drilled into the body. 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Figure 1 shows an aerofoil blade 1 with a plurality of passages 3. The passages 3 are filled with a powdered salt 4 and then welded closed. An end of the blade 1 is located in an end of a mould 2 which is filled with a powdered alloy 6. The blade 1 and mould 2 are hot isostatically pressed, thereby sintering the powder 6 and joining it to the blade 1. The welds 5 are then opened and the salt 4 removed. Figure 2 shows powder preform 26 which comprises a cavity 23. A reinforcing box, web, rib or mesh 20 lies within the cavity 23, along with a salt 24. The perform 26 is hipped and then the salt 24 removed through a drain hole 28 drilled into the body. An alloy may be used instead of a salt.</abstract><oa>free_for_read</oa></addata></record>
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subjects	CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES FOUNDRY MOULDING MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER PERFORMING OPERATIONS POWDER METALLURGY TRANSPORTING WORKING METALLIC POWDER
title	A method of joining two components to form a product
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