JPS5554501A - Production of wristwatch case - Google Patents

Production of wristwatch case

Info

Publication number
JPS5554501A
JPS5554501A JP12585878A JP12585878A JPS5554501A JP S5554501 A JPS5554501 A JP S5554501A JP 12585878 A JP12585878 A JP 12585878A JP 12585878 A JP12585878 A JP 12585878A JP S5554501 A JPS5554501 A JP S5554501A
Authority
JP
Japan
Prior art keywords
powder
wristwatch case
molding
braze material
sintering
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.)
Pending
Application number
JP12585878A
Other languages
Japanese (ja)
Inventor
Kiyoyuki Arai
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Seiko Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP12585878A priority Critical patent/JPS5554501A/en
Publication of JPS5554501A publication Critical patent/JPS5554501A/en
Pending legal-status Critical Current

Links

Landscapes

  • Powder Metallurgy (AREA)

Abstract

PURPOSE: To achieve the improvement in the appearance of the wristwatch case which is sintered and forged and the improvement of its corrosion resistance by compounding powder or small lumps of braze material in metal powder in the fore- process of powder molding.
CONSTITUTION: Powder braze or small lumps of braze material are mixed in metal powder in the range up to 30% in the mixing process of powder. At the time when the molding sinters in this sintering process, the braze material completely fills the continuous pores from the inside and finally oozes to the surface layer, whereby the pore sealing is accelerated. In succession to the sintering process, the molding undergoes post-forging process and finishing process, whereby the wristwatch case is produced. By this sintering and forging method, the cost reduction effect of the wristwatch case is expected.
COPYRIGHT: (C)1980,JPO&Japio
JP12585878A 1978-10-12 1978-10-12 Production of wristwatch case Pending JPS5554501A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12585878A JPS5554501A (en) 1978-10-12 1978-10-12 Production of wristwatch case

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12585878A JPS5554501A (en) 1978-10-12 1978-10-12 Production of wristwatch case

Publications (1)

Publication Number Publication Date
JPS5554501A true JPS5554501A (en) 1980-04-21

Family

ID=14920677

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12585878A Pending JPS5554501A (en) 1978-10-12 1978-10-12 Production of wristwatch case

Country Status (1)

Country Link
JP (1) JPS5554501A (en)

Similar Documents

Publication Publication Date Title
ATE3214T1 (en) PROCESS FOR THE PRODUCTION OF SINTERABLE TITANIUM-BASED ALLOY POWDER.
JPS55122804A (en) Production of sintered part
JPS5274508A (en) Co-base sintered alloy
DE69707891T2 (en) PRODUCTION OF METAL POWDER BODIES BY SINTERING, SPHEROIDIZING AND HOT FORMING
JPS57158367A (en) Surface hardening method
JPS5677301A (en) Sintering method of al or its alloy powder
JPS55122801A (en) High speed steel powder and sintered body thereof
JPS5751231A (en) Manufacture of ferromagnetic aluminum-base parts
DE69428236D1 (en) Metallic powder for producing parts by press molding and sintering, and method for producing the powder
EP0034330A3 (en) Process for producing component parts by powder metallurgy
JPS5554501A (en) Production of wristwatch case
JPS56152960A (en) Tungsten carbide melt-spraying powder and its manufacture
JPS53125913A (en) Method of producing aluminium alloy low density sintered parts
GB938210A (en) Method of making a composite strip
JPS56102501A (en) Manufacture of sintered parts
JPS56166307A (en) Production of sintered composite parts
JPS57200501A (en) Iron powder having high compressibility for high strength powder metallurgy product and preparation thereof
JPS5792104A (en) Sintered metallic article and its production
JPS565901A (en) Production of abrasion-resistant sintered alloy
JPS55152141A (en) Hybrid metal material and preparation thereof
JPS5451909A (en) Hot hydrostatic press method
JPS5646164A (en) Method of manufacturing cylinder liner
JPS57129658A (en) Modification of food product
JPS5665901A (en) Production of sintered machine parts
JPS5365206A (en) Preparation of porous metal