JPH0476007B2 - - Google Patents

Info

Publication number

JPH0476007B2

JPH0476007B2 JP25621086A JP25621086A JPH0476007B2 JP H0476007 B2 JPH0476007 B2 JP H0476007B2 JP 25621086 A JP25621086 A JP 25621086A JP 25621086 A JP25621086 A JP 25621086A JP H0476007 B2 JPH0476007 B2 JP H0476007B2

Authority

JP

Japan

Prior art keywords

umbrella

core material

valve

hot

hollow

Prior art date

1986-10-28

Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)

Expired

Links

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• 239000011162 core material Substances 0.000 claims description 33
• 239000000463 material Substances 0.000 claims description 31
• OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 11
• 238000004519 manufacturing process Methods 0.000 claims description 11
• 238000000034 method Methods 0.000 claims description 8
• 229910002804 graphite Inorganic materials 0.000 claims description 7
• 239000010439 graphite Substances 0.000 claims description 7
• 238000005242 forging Methods 0.000 claims description 6
• 238000001192 hot extrusion Methods 0.000 claims description 6
• 238000000465 moulding Methods 0.000 claims description 5
• 239000010959 steel Substances 0.000 claims description 5
• 229910000831 Steel Inorganic materials 0.000 claims description 4
• 229910052799 carbon Inorganic materials 0.000 claims description 4
• 238000010438 heat treatment Methods 0.000 claims description 2
• 238000003466 welding Methods 0.000 description 6
• 238000005553 drilling Methods 0.000 description 3
• 230000000694 effects Effects 0.000 description 3
• 238000001125 extrusion Methods 0.000 description 3
• 238000005520 cutting process Methods 0.000 description 2
• 239000011148 porous material Substances 0.000 description 2
• 229910000838 Al alloy Inorganic materials 0.000 description 1
• 229910000851 Alloy steel Inorganic materials 0.000 description 1
• 241000021559 Dicerandra Species 0.000 description 1
• DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
• 235000010654 Melissa officinalis Nutrition 0.000 description 1
• 229910000861 Mg alloy Inorganic materials 0.000 description 1
• 229910001069 Ti alloy Inorganic materials 0.000 description 1
• 239000002253 acid Substances 0.000 description 1
• 230000002411 adverse Effects 0.000 description 1
• 238000002485 combustion reaction Methods 0.000 description 1
• 230000006835 compression Effects 0.000 description 1
• 238000007906 compression Methods 0.000 description 1
• 238000001816 cooling Methods 0.000 description 1
• 238000010586 diagram Methods 0.000 description 1
• 238000010894 electron beam technology Methods 0.000 description 1
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• 238000007731 hot pressing Methods 0.000 description 1
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• 229910001234 light alloy Inorganic materials 0.000 description 1
• 239000000865 liniment Substances 0.000 description 1
• 229910052751 metal Inorganic materials 0.000 description 1
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• 239000002994 raw material Substances 0.000 description 1
• 238000007789 sealing Methods 0.000 description 1
• 229910052708 sodium Inorganic materials 0.000 description 1
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• 239000000126 substance Substances 0.000 description 1
• 239000013585 weight reducing agent Substances 0.000 description 1