DE3838608C2 - - Google Patents
Info
- Publication number
- DE3838608C2 DE3838608C2 DE19883838608 DE3838608A DE3838608C2 DE 3838608 C2 DE3838608 C2 DE 3838608C2 DE 19883838608 DE19883838608 DE 19883838608 DE 3838608 A DE3838608 A DE 3838608A DE 3838608 C2 DE3838608 C2 DE 3838608C2
- Authority
- DE
- Germany
- Prior art keywords
- resistance
- metal part
- frequency
- measuring
- carbon concentration
- 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 - Fee Related
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 52
- 229910052799 carbon Inorganic materials 0.000 claims description 52
- 238000000034 method Methods 0.000 claims description 47
- 239000002184 metal Substances 0.000 claims description 36
- 238000005259 measurement Methods 0.000 claims description 25
- 230000035515 penetration Effects 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 14
- 238000012360 testing method Methods 0.000 claims description 14
- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- 239000004020 conductor Substances 0.000 claims description 5
- 230000001419 dependent effect Effects 0.000 claims description 5
- 230000005284 excitation Effects 0.000 claims description 5
- 230000003313 weakening effect Effects 0.000 claims description 2
- 239000010410 layer Substances 0.000 claims 4
- 238000011156 evaluation Methods 0.000 claims 2
- 230000006698 induction Effects 0.000 claims 1
- 239000002344 surface layer Substances 0.000 claims 1
- 239000000523 sample Substances 0.000 description 26
- 229910000831 Steel Inorganic materials 0.000 description 8
- 238000005255 carburizing Methods 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 239000007789 gas Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000003245 coal Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000005315 distribution function Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- 238000012369 In process control Methods 0.000 description 1
- 229910021398 atomic carbon Inorganic materials 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000010965 in-process control Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000010327 methods by industry Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 239000012085 test solution Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/023—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance where the material is placed in the field of a coil
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Investigating And Analyzing Materials By Characteristic Methods (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19883838608 DE3838608A1 (de) | 1988-11-15 | 1988-11-15 | Verfahren und anordnung zur bestimmung einer prozessvariablen bei der waermebehandlung von metallteilen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19883838608 DE3838608A1 (de) | 1988-11-15 | 1988-11-15 | Verfahren und anordnung zur bestimmung einer prozessvariablen bei der waermebehandlung von metallteilen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3838608A1 DE3838608A1 (de) | 1990-05-17 |
| DE3838608C2 true DE3838608C2 (en, 2012) | 1991-11-07 |
Family
ID=6367172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19883838608 Granted DE3838608A1 (de) | 1988-11-15 | 1988-11-15 | Verfahren und anordnung zur bestimmung einer prozessvariablen bei der waermebehandlung von metallteilen |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE3838608A1 (en, 2012) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101929967B (zh) * | 2010-01-19 | 2012-06-06 | 南京钢铁股份有限公司 | 一种电阻率检测低碳微合金钢中Nb(C,N)溶解温度的方法 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19513547C2 (de) * | 1995-04-10 | 2003-04-10 | Siemens Ag | Verfahren zum Steuern des Wärmebehandlungsprozesses in einer Pelletieranlage |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3596175A (en) * | 1968-08-23 | 1971-07-27 | Andrew Alford | Electrical measuring apparatus for providing an output signal at an output branch characteristic of the relationship of impedances presented at first and second side branches at the frequency of energy applied at an input branch |
| US3746975A (en) * | 1971-08-20 | 1973-07-17 | Drexelbrook Controls | Measuring characteristics of materials by using susceptive and conductive components of admittance |
| US3868315A (en) * | 1972-07-12 | 1975-02-25 | Exxon Research Engineering Co | Electronic measurement of end point of asphalt oxidation |
-
1988
- 1988-11-15 DE DE19883838608 patent/DE3838608A1/de active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101929967B (zh) * | 2010-01-19 | 2012-06-06 | 南京钢铁股份有限公司 | 一种电阻率检测低碳微合金钢中Nb(C,N)溶解温度的方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3838608A1 (de) | 1990-05-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| D2 | Grant after examination | ||
| 8363 | Opposition against the patent | ||
| 8339 | Ceased/non-payment of the annual fee |