CN105548242A - Method and device for measuring content of carbon and chromium in chromium-containing molten white cast iron by thermal analysis method - Google Patents
Method and device for measuring content of carbon and chromium in chromium-containing molten white cast iron by thermal analysis method Download PDFInfo
- Publication number
- CN105548242A CN105548242A CN201610029267.2A CN201610029267A CN105548242A CN 105548242 A CN105548242 A CN 105548242A CN 201610029267 A CN201610029267 A CN 201610029267A CN 105548242 A CN105548242 A CN 105548242A
- Authority
- CN
- China
- Prior art keywords
- chromium
- molten iron
- cast iron
- thermal analysis
- content
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/14—Investigating or analyzing materials by the use of thermal means by using distillation, extraction, sublimation, condensation, freezing, or crystallisation
- G01N25/147—Investigating or analyzing materials by the use of thermal means by using distillation, extraction, sublimation, condensation, freezing, or crystallisation by cristallisation
Abstract
The invention discloses a method for measuring the content of carbon and chromium in chromium-containing molten white cast iron by a thermal analysis method. The method comprises the following steps: acquiring the initial crystallization temperature TL and the eutectic temperature TE of the chromium-containing molten cast iron; calculating the content of the carbon and the chromium in the molten iron, wherein the calculating formulae are C%=15.21-(0.007-0.01)*TL and Cr%=(0.004-0.008)*TL+(0.105-0.152)*TE-171.9, wherein the C% is the percentage of carbon element, and the Cr% is the percentage of chromium content. Correspondingly, the invention further provides a device for measuring the content of the carbon and the chromium in the chromium-containing molten white cast iron by the thermal analysis method. The method and the device for measuring the content of the carbon and the chromium in the molten iron disclosed by the invention adopt the thermal analysis method to measure the content of the carbon element and the content of the chromium content in the chromium-containing molten white cast iron quickly; the time from sampling to measurement results is about only 2 minutes; the acquired data is reliable; the steps are simple; the measurement efficiency is high; specialized persons are not required; the labor and equipment cost is low.
Description
Technical field
The present invention relates to thermal analysis system and measure molten iron constituent content, particularly a kind of thermal analysis system measures the method and device that contain chromium white cast iron molten iron carbon chromium content.
Background technology
Assay method at present containing chromium white cast iron molten iron carbon element and chromium constituent content adopts chemical analysis or spectrographic method usually, from being sampled to measurement result, chemical analysis is minimum needs half an hour, spectrographic method also needs about 15 minutes, two kinds of methods all need to be equipped with professional, and spectrographic method apparatus expensive.
Summary of the invention
The object of this invention is to provide a kind of thermal analysis system and measure the method and device that contain chromium white cast iron molten iron carbon chromium content, at least can one of solve the problem.
For achieving the above object, according to an aspect of the present invention, provide a kind of thermal analysis system and measure the method containing chromium white cast iron molten iron carbon chromium content, comprise the following steps: the sample cup chromium cast iron contained molten iron of melting being watered forward (FWD) temperature thermocouple, gather cooling data, obtain cooling curve; Liquidus temperature TL and eutectic temperature TE is drawn according to cooling curve; Carbon chromium content in molten iron is calculated according to liquidus temperature TL and eutectic temperature TE, computing formula is C%=15.21 ﹣ 0.007 ~ 0.01 × TL, Cr%=0.004 ~ 0.008 × TL+0.105 ~ 0.152 × TE ﹣ 171.9, wherein C% is molten iron carbon element percentage composition, and Cr% is molten iron chromium element percentage composition.Thus, adopt said method to measure carbon chromium content in molten iron, reliable data can be obtained, there is the advantage that step is simple, easy to operate, minute is short.
In some embodiments, in molten iron: C%=2.10 ~ 3.60%; Cr%=7.0 ~ 32.0%.Thus obtain reliable test data.
Correspondingly, present invention also offers a kind of thermal analysis system and measure the device containing chromium white cast iron molten iron carbon chromium content, comprise the test specimens cup, thermopair, data collector and the industrial computer that connect successively, data collector gathers the temperature signal of thermopair and is sent to industrial computer, and industrial computer carries out analyzing and processing to temperature signal and draws cooling curve calculating carbon chromium content.This apparatus structure is simple, cost is low, easy to operate.
In some embodiments, also comprise compensating wire, thermopair is connected with compensating wire respectively with data collector.Thus obtain temperature data more accurately.
In some embodiments, also comprise display, display is connected with industrial computer, for showing cooling curve and the data of industrial computer process acquisition.Thus convenient operation personnel obtain test data.
Beneficial effect of the present invention is: molten iron carbon chromium content test method of the present invention and device adopt thermal analysis system, Fast Measurement is containing chromium white cast iron molten iron carbon element and chromium constituent content, about 2 minutes are only needed from being sampled to measurement result, obtain that data are reliable, step is simple, testing efficiency is high, without the need to being equipped with professional, artificial and equipment cost is low.
Accompanying drawing explanation
Fig. 1 is the structural representation of thermal analysis system mensuration containing the device of chromium white cast iron molten iron carbon chromium content of an embodiment of the present invention;
Fig. 2 is the schematic diagram containing chromium white cast iron molten iron cooling curve.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further detailed explanation.
Fig. 1 show schematically show and measures according to the thermal analysis system of one embodiment of the present invention the device containing chromium white cast iron molten iron carbon chromium content.
As shown in Figure 1, this thermal analysis system measures the device containing chromium white cast iron molten iron carbon chromium content, comprise the test specimens cup 1, thermopair 2, data collector 3 and the industrial computer 4 that connect successively, data collector 3 gathers the temperature signal of thermopair 2 and is sent to industrial computer 4, and industrial computer 4 pairs of temperature signals carry out analyzing and processing and draw cooling curve calculating carbon chromium content.Industrial computer 4 is connected with data collector 3 by USB interface.
Cooling curve and temperature time curve.
The device of present embodiment also comprises compensating wire 5 and display 6, and thermopair 2 is connected with compensating wire 5 respectively with data collector 3.Display 6 is connected with industrial computer 4, processes for showing industrial computer 4 cooling curve and data that obtain.
The device using above-mentioned thermal analysis system mensuration to contain chromium white cast iron molten iron carbon chromium content carries out the method for carbon chrome determination, comprises the following steps:
S1, by chromium cast iron contained heating and melting, pour in test specimens cup 1, the temperature of molten iron in sample cup 1 measured by thermopair 2, transfer the temperature signal of change to voltage signal, the instruction that harvester 3 sends according to industrial computer 4, the voltage signal acquisition of thermopair is also sent to industrial computer 4 being converted to digital signal to data collector 3, and industrial computer 4 carries out on-line communication by USB interface and data collector 3, and these digital signals are reduced to temperature data.Industrial computer 4 pairs of temperature datas carry out analyzing and processing, and analysis processing result display on the display 6.The data that compensating wire 5 can make thermopair 2 gather more accurately and reliably.Industrial computer 4 pairs of temperature datas carry out analyzing and processing, draw cooling curve as Fig. 2.In sample to be tested cup 1 after molten steel solidification, be depicted as complete cooling curve.
In molten iron: C%=2.10 ~ 3.60%; Cr%=7.0 ~ 32.0%.It should be noted that, in mensuration molten iron before carbon chromium content, operator has recognized the approximate range of carbon chromium content in molten iron.The approximate range of carbon chromium content in molten iron need be inputted industrial computer 4, to obtain test data more accurately when measuring.
S2, industrial computer 4 draw liquidus temperature TL and eutectic temperature TE according to the cooling curve drawn.Liquidus temperature TL is that object starts to become solid-state maximum temperature from liquid state.
S3, industrial computer 4 calculate carbon chromium content in molten iron according to liquidus temperature TL and eutectic temperature TE, computing formula is C%=15.21 ﹣ 0.007 ~ 0.01 × TL, Cr%=0.004 ~ 0.008 × TL+0.105 ~ 0.152 × TE ﹣ 71.9, wherein C% is molten iron carbon element percentage composition, and Cr% is molten iron chromium element percentage composition.
Adopt thermal analysis system to measure the device containing chromium white cast iron molten iron carbon chromium content, concrete measured data is as follows:
Above-mentioned test sample book carries out contrast test through chemical analysis and spectrographic method, draws, the test result of this assay method and device and chemical analysis and spectrographic method consistance fine, there is very high accuracy and reliability.
Above-described is only some embodiments of the present invention.For the person of ordinary skill of the art, without departing from the concept of the premise of the invention, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (6)
1. thermal analysis system measures the method containing chromium white cast iron molten iron carbon chromium content, it is characterized in that, comprises the following steps:
The chromium cast iron contained molten iron of melting is watered the sample cup of forward (FWD) temperature thermocouple, gather cooling data, obtain cooling curve;
Liquidus temperature TL and eutectic temperature TE is drawn according to cooling curve;
Carbon chromium content in molten iron is calculated according to liquidus temperature TL and eutectic temperature TE, computing formula is C%=15.21 ﹣ (0.007 ~ 0.01) × TL, Cr%=(0.004 ~ 0.008) × TL+(0.105 ~ 0.152) × TE ﹣ 171.9, wherein C% is molten iron carbon element percentage composition, and Cr% is molten iron chromium element percentage composition.
2. thermal analysis system according to claim 1 measures the method containing chromium white cast iron molten iron carbon chromium content, it is characterized in that, in described molten iron: C%=2.10 ~ 3.60%; Cr%=7.0 ~ 32.0%.
3. thermal analysis system measures the device containing chromium white cast iron molten iron carbon chromium content, it is characterized in that, comprise the test specimens cup (1), thermopair (2), data collector (3) and the industrial computer (4) that connect successively, described data collector (3) gathers the temperature signal of thermopair (2) and is sent to industrial computer (4), and industrial computer (4) carries out analyzing and processing to temperature signal and draws cooling curve calculating carbon chromium content.
4. thermal analysis system according to claim 3 measures the device containing chromium white cast iron molten iron carbon chromium content, and it is characterized in that, also comprise compensating wire (5), described thermopair (2) is connected with compensating wire respectively with data collector (3).
5. thermal analysis system according to claim 3 measures the device containing chromium white cast iron molten iron carbon chromium content, it is characterized in that, also comprise display (6), described display (6) is connected with industrial computer (4), for showing cooling curve and the data of industrial computer (4) process acquisition.
6. thermal analysis system according to claim 3 measures the device containing chromium white cast iron molten iron carbon chromium content, and it is characterized in that, described industrial computer (4) is connected with data collector (3) by USB interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610029267.2A CN105548242A (en) | 2016-01-18 | 2016-01-18 | Method and device for measuring content of carbon and chromium in chromium-containing molten white cast iron by thermal analysis method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610029267.2A CN105548242A (en) | 2016-01-18 | 2016-01-18 | Method and device for measuring content of carbon and chromium in chromium-containing molten white cast iron by thermal analysis method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105548242A true CN105548242A (en) | 2016-05-04 |
Family
ID=55827578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610029267.2A Pending CN105548242A (en) | 2016-01-18 | 2016-01-18 | Method and device for measuring content of carbon and chromium in chromium-containing molten white cast iron by thermal analysis method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105548242A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108195876A (en) * | 2017-12-28 | 2018-06-22 | 佛山科睿探测仪器科技有限公司 | The method and apparatus of potassium steel molten steel manganese content during a kind of thermal analysis system measures |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4667725A (en) * | 1984-09-12 | 1987-05-26 | Sinter-Cast Ab | Method for producing cast-iron, and in particular cast-iron which contains vermicular graphite |
| CN86107807A (en) * | 1986-11-13 | 1988-05-25 | 北京工业大学 | Iron machine performance rapid test method and device thereof |
| US5615730A (en) * | 1993-10-15 | 1997-04-01 | Nippon Sublance Probe Engineering Ltd. | Methods for inspecting the content of structure modifying additives in molten cast iron and chilling tendency of flaky graphite cast iron |
| CN1264039A (en) * | 1999-02-04 | 2000-08-23 | 金属科学有限会社 | Method for determination of amount of carbon and silicon in molten iron |
| CN102809580A (en) * | 2012-08-06 | 2012-12-05 | 大连润恒科技有限公司 | Thermo-analysis method and thermo-analysis equipment capable of detecting manganese content in melted iron |
-
2016
- 2016-01-18 CN CN201610029267.2A patent/CN105548242A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4667725A (en) * | 1984-09-12 | 1987-05-26 | Sinter-Cast Ab | Method for producing cast-iron, and in particular cast-iron which contains vermicular graphite |
| CN86107807A (en) * | 1986-11-13 | 1988-05-25 | 北京工业大学 | Iron machine performance rapid test method and device thereof |
| US5615730A (en) * | 1993-10-15 | 1997-04-01 | Nippon Sublance Probe Engineering Ltd. | Methods for inspecting the content of structure modifying additives in molten cast iron and chilling tendency of flaky graphite cast iron |
| CN1264039A (en) * | 1999-02-04 | 2000-08-23 | 金属科学有限会社 | Method for determination of amount of carbon and silicon in molten iron |
| CN102809580A (en) * | 2012-08-06 | 2012-12-05 | 大连润恒科技有限公司 | Thermo-analysis method and thermo-analysis equipment capable of detecting manganese content in melted iron |
Non-Patent Citations (2)
| Title |
|---|
| 张守魁 等: "铸铁成分热分析", 《中国现代教育装备》 * |
| 马建华: "热分析技术在铸铁领域的应用", 《中国铸造装备与技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108195876A (en) * | 2017-12-28 | 2018-06-22 | 佛山科睿探测仪器科技有限公司 | The method and apparatus of potassium steel molten steel manganese content during a kind of thermal analysis system measures |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106814099A (en) | Freezing point, fusing point or crystalline temperature automatization test system | |
| CN102279178B (en) | Method for analyzing and testing body cell content in raw milk | |
| CN105548242A (en) | Method and device for measuring content of carbon and chromium in chromium-containing molten white cast iron by thermal analysis method | |
| CN205484244U (en) | Heat of combustion rate of release normal position measuring device | |
| CN203241371U (en) | Portable multi-index impedance biosensor device | |
| CN111413372A (en) | Seawater temperature and salinity calibration data acquisition device | |
| CN104485956B (en) | The adjustment method of high stability crystal oscillator | |
| CN106770518A (en) | It is a kind of for aluminium and aluminium alloy melt in determine hydrogen production device and method | |
| CN103267778A (en) | System for concurrently measuring uranium concentration and nitric acid concentration | |
| CN105372281A (en) | Carbon and silicon content online analyzer for stokehold molten iron | |
| CN206132591U (en) | Pitch and adhesion nature tester that gathers materials | |
| CN106053520B (en) | A kind of method and device of thermal analysis system measurement molten iron manganese content | |
| CN201373834Y (en) | Online electronic solution concentration meter | |
| CN201166593Y (en) | Oxygen-determining instrument for measuring temperature of molten steel | |
| CN204359806U (en) | The Special Automatic industrial analysis instrument of ature of coal | |
| CN205643214U (en) | Nodular cast iron thermal analyzer | |
| CN207502086U (en) | The contactless tempered glass surface stress measurement device of polarised light | |
| CN103149244A (en) | Portable multi-index impedence biosensor device | |
| CN203893955U (en) | System for testing performance of thermostatic bath | |
| CN103543170A (en) | Method for quickly detecting concentration of ammonium nitrate solution | |
| CN108195876A (en) | The method and apparatus of potassium steel molten steel manganese content during a kind of thermal analysis system measures | |
| CN211374582U (en) | Device for rapidly measuring chromium content of medium-high chromium cast iron molten iron | |
| CN205246644U (en) | Molten iron analytical instrument | |
| CN204491041U (en) | A kind of sapphire growth furnace temperature measuring equipment | |
| CN101382481B (en) | Method for detecting somatic cell number in raw milk |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170808 Address after: 528000 Guangdong province Foshan city Chancheng District Jiangwan Road Street Market North West Bute Tang 1 building two floor No. 222 self Applicant after: Foshan branch Instrument Technology Co., Ltd. Rui Rui Address before: 2, 502, 524000, 7, two, agriculture and forestry road, Chikan District, Guangdong, Zhanjiang Applicant before: Su Jinqi |
|
| TA01 | Transfer of patent application right | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160504 |
|
| RJ01 | Rejection of invention patent application after publication |