JPS5598358A - Aging change expectration method of metal concentration in oil - Google Patents

Aging change expectration method of metal concentration in oil

Info

Publication number
JPS5598358A
JPS5598358A JP538879A JP538879A JPS5598358A JP S5598358 A JPS5598358 A JP S5598358A JP 538879 A JP538879 A JP 538879A JP 538879 A JP538879 A JP 538879A JP S5598358 A JPS5598358 A JP S5598358A
Authority
JP
Japan
Prior art keywords
metal concentration
aging change
oil
concentration
change
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
JP538879A
Other languages
Japanese (ja)
Inventor
Kenji Saeki
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.)
NIPPON KENKI SERVICE KK
Original Assignee
NIPPON KENKI SERVICE KK
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 NIPPON KENKI SERVICE KK filed Critical NIPPON KENKI SERVICE KK
Priority to JP538879A priority Critical patent/JPS5598358A/en
Publication of JPS5598358A publication Critical patent/JPS5598358A/en
Pending legal-status Critical Current

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  • Investigating And Analyzing Materials By Characteristic Methods (AREA)

Abstract

PURPOSE: To expect the aging change in future of metal concentration by obtaining the aging change of the metal concentration in oil and comparing it with the previously obtained normal concentration, limit and various aging change characteristics and the like.
CONSTITUTION: Sampling is successively carried out at a suitable time for an hydraulic operating fluid or lubricant new in use in the machine, and every time, the metal concentration in the sampling oil is analyzed and the analyzed metal concentration is recorded in a recording paper in a graph to obtain the aging change of the metal concentration. This aging change is obtained in advance and compared with the previously obtained normal limit concentration, various type of change characteristic and the like, thereby future aging change of the metal concentration and the time when the machine being brought into abnormal condition being expected.
COPYRIGHT: (C)1980,JPO&Japio
JP538879A 1979-01-20 1979-01-20 Aging change expectration method of metal concentration in oil Pending JPS5598358A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP538879A JPS5598358A (en) 1979-01-20 1979-01-20 Aging change expectration method of metal concentration in oil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP538879A JPS5598358A (en) 1979-01-20 1979-01-20 Aging change expectration method of metal concentration in oil

Publications (1)

Publication Number Publication Date
JPS5598358A true JPS5598358A (en) 1980-07-26

Family

ID=11609771

Family Applications (1)

Application Number Title Priority Date Filing Date
JP538879A Pending JPS5598358A (en) 1979-01-20 1979-01-20 Aging change expectration method of metal concentration in oil

Country Status (1)

Country Link
JP (1) JPS5598358A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6170208A (en) * 1984-09-14 1986-04-11 Hitachi Constr Mach Co Ltd Detecting device for abnormal state of hydraulic circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6170208A (en) * 1984-09-14 1986-04-11 Hitachi Constr Mach Co Ltd Detecting device for abnormal state of hydraulic circuit
JPH0220848B2 (en) * 1984-09-14 1990-05-10 Hitachi Construction Machinery

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