GB634617A - Improvements in or relating to the manufacture of valves - Google Patents

Improvements in or relating to the manufacture of valves

Info

Publication number
GB634617A
GB634617A GB195348A GB195348A GB634617A GB 634617 A GB634617 A GB 634617A GB 195348 A GB195348 A GB 195348A GB 195348 A GB195348 A GB 195348A GB 634617 A GB634617 A GB 634617A
Authority
GB
United Kingdom
Prior art keywords
valves
rods
butt welding
head
valve
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.)
Expired
Application number
GB195348A
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.)
VALVES Ltd
Original Assignee
VALVES Ltd
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 VALVES Ltd filed Critical VALVES Ltd
Priority to GB195348A priority Critical patent/GB634617A/en
Publication of GB634617A publication Critical patent/GB634617A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/20—Making machine elements valve parts
    • B21K1/22—Making machine elements valve parts poppet valves, e.g. for internal-combustion engines

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)
  • Forging (AREA)

Abstract

634,617. Making valves. JOSEPH, C. S., and VALVES, Ltd. Jan. 22, 1948, No. 1953. [Class 83 (ii)] [Also in Group XXVII] A poppet valve is made by butt welding and preferably by flash butt welding two or more rods of different materials and then forging one end of the composite rod to form a head. Rods a and b of silicon chrome steel and austenitic steel are joined end-to-end by flash butt welding and the part b is forged, as by electrical upsetting, to form the valve head. The upsetting is preferably carried out in two stages and the valve is finished by machining. In a modification, three different rods are joined so that the forged head itself comprises two different steels.
GB195348A 1948-01-22 1948-01-22 Improvements in or relating to the manufacture of valves Expired GB634617A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB195348A GB634617A (en) 1948-01-22 1948-01-22 Improvements in or relating to the manufacture of valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB195348A GB634617A (en) 1948-01-22 1948-01-22 Improvements in or relating to the manufacture of valves

Publications (1)

Publication Number Publication Date
GB634617A true GB634617A (en) 1950-03-22

Family

ID=9730956

Family Applications (1)

Application Number Title Priority Date Filing Date
GB195348A Expired GB634617A (en) 1948-01-22 1948-01-22 Improvements in or relating to the manufacture of valves

Country Status (1)

Country Link
GB (1) GB634617A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996005414A1 (en) * 1994-08-11 1996-02-22 Del West Engineering, Inc. Titanium engine valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996005414A1 (en) * 1994-08-11 1996-02-22 Del West Engineering, Inc. Titanium engine valve
US5517956A (en) * 1994-08-11 1996-05-21 Del West Engineering, Inc. Titanium engine valve

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