JPS5598358A - Aging change expectration method of metal concentration in oil - Google Patents
Aging change expectration method of metal concentration in oilInfo
- 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
Links
Landscapes
- 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
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)
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 |
-
1979
- 1979-01-20 JP JP538879A patent/JPS5598358A/en active Pending
Cited By (2)
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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