JPH0465733B2 - - Google Patents

Info

Publication number

JPH0465733B2

JPH0465733B2 JP2334186A JP2334186A JPH0465733B2 JP H0465733 B2 JPH0465733 B2 JP H0465733B2 JP 2334186 A JP2334186 A JP 2334186A JP 2334186 A JP2334186 A JP 2334186A JP H0465733 B2 JPH0465733 B2 JP H0465733B2

Authority

JP

Japan

Prior art keywords

coil

hollow

valve

hole

engine valve

Prior art date

1986-02-05

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 18
• 238000004519 manufacturing process Methods 0.000 claims description 12
• OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
• 238000001125 extrusion Methods 0.000 claims description 10
• 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
• 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 3
• 239000000919 ceramic Substances 0.000 claims description 3
• 238000007789 sealing Methods 0.000 claims 1
• 238000005553 drilling Methods 0.000 description 3
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• 229910000838 Al alloy Inorganic materials 0.000 description 1
• 229910000851 Alloy steel Inorganic materials 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
• 229910000861 Mg alloy Inorganic materials 0.000 description 1
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• 238000007731 hot pressing Methods 0.000 description 1
• 238000002386 leaching Methods 0.000 description 1
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• 238000002844 melting Methods 0.000 description 1
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• 229910052751 metal Inorganic materials 0.000 description 1
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