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JPS56206A - Manufacture of piston ring made of sintered alloy - Google Patents

Manufacture of piston ring made of sintered alloy

Info

Publication number
JPS56206A
JPS56206A JP7221479A JP7221479A JPS56206A JP S56206 A JPS56206 A JP S56206A JP 7221479 A JP7221479 A JP 7221479A JP 7221479 A JP7221479 A JP 7221479A JP S56206 A JPS56206 A JP S56206A
Authority
JP
Japan
Prior art keywords
piston ring
matching mouth
sintered alloy
die
manufacture
Prior art date
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.)
Granted
Application number
JP7221479A
Other languages
Japanese (ja)
Other versions
JPS5943961B2 (en
Inventor
Masaharu Miyano
Kenichi Kawaguchi
Chiyoji Motoi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Riken Corp
Original Assignee
Riken Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Riken Corp filed Critical Riken Corp
Priority to JP7221479A priority Critical patent/JPS5943961B2/en
Publication of JPS56206A publication Critical patent/JPS56206A/en
Publication of JPS5943961B2 publication Critical patent/JPS5943961B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Pistons, Piston Rings, And Cylinders (AREA)
  • Powder Metallurgy (AREA)

Abstract

PURPOSE: To manufacture a piston ring of excellent dimensional accuracy at low cost by making the shape of a sizing die a true circuler form in manufacturing a sintered alloy piston ring.
CONSTITUTION: An atomized iron powder is mixed with a lubricant powder, e.g., zinc stearate, natural praphite, etc., and then molded by compression in a molding die to form a pressed powder for piston ring, where the matching mouth of piston ring is made to have a dimension corresponding to 130W200% of a free matching mouth, and also the width dimension is set up by allowing for a 1W20% shrinkage allowance encountered in the subsequent process. Then, the aperture of matching mouth of the pressed powder is cut off the removal to form a sintered alloy metal piston ring element material with a matching mouth. The element material is put in the sizing die, compressed as much as 1W20% of the width dimension for up and down sides, and then taken out of the die. In this case, the inside diameter of the sizing die is set up to DWD+L/π (D is the nominal diameter of piston ring and L is a free matching mouth aperture).
COPYRIGHT: (C)1981,JPO&Japio
JP7221479A 1979-06-11 1979-06-11 Manufacturing method of sintered metal piston ring Expired JPS5943961B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7221479A JPS5943961B2 (en) 1979-06-11 1979-06-11 Manufacturing method of sintered metal piston ring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7221479A JPS5943961B2 (en) 1979-06-11 1979-06-11 Manufacturing method of sintered metal piston ring

Publications (2)

Publication Number Publication Date
JPS56206A true JPS56206A (en) 1981-01-06
JPS5943961B2 JPS5943961B2 (en) 1984-10-25

Family

ID=13482763

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7221479A Expired JPS5943961B2 (en) 1979-06-11 1979-06-11 Manufacturing method of sintered metal piston ring

Country Status (1)

Country Link
JP (1) JPS5943961B2 (en)

Also Published As

Publication number Publication date
JPS5943961B2 (en) 1984-10-25

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