JPH0542738Y2 - - Google Patents

Info

Publication number

JPH0542738Y2

JPH0542738Y2 JP1988074743U JP7474388U JPH0542738Y2 JP H0542738 Y2 JPH0542738 Y2 JP H0542738Y2 JP 1988074743 U JP1988074743 U JP 1988074743U JP 7474388 U JP7474388 U JP 7474388U JP H0542738 Y2 JPH0542738 Y2 JP H0542738Y2

Authority

JP

Japan

Prior art keywords

end surface

annular body

pressing

cylindrical portion

spring

Prior art date

1987-06-09

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 - Lifetime

Links

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• 230000002093 peripheral effect Effects 0.000 claims description 6
• 238000003825 pressing Methods 0.000 description 30
• 239000002253 acid Substances 0.000 description 7
• 239000007788 liquid Substances 0.000 description 5
• 238000007747 plating Methods 0.000 description 5
• 238000004381 surface treatment Methods 0.000 description 4
• PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
• 239000010931 gold Substances 0.000 description 3
• 229910052737 gold Inorganic materials 0.000 description 3
• 238000005554 pickling Methods 0.000 description 3
• 239000000126 substance Substances 0.000 description 3
• 238000011282 treatment Methods 0.000 description 3
• 238000005219 brazing Methods 0.000 description 2
• 238000000034 method Methods 0.000 description 2
• 238000002203 pretreatment Methods 0.000 description 2
• 238000005266 casting Methods 0.000 description 1
• 230000007797 corrosion Effects 0.000 description 1
• 238000005260 corrosion Methods 0.000 description 1
• 230000000694 effects Effects 0.000 description 1
• JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
• 239000007787 solid Substances 0.000 description 1