CN101398363B - Air pressure type device for detecting aluminum melt inclusions and method thereof - Google Patents
Air pressure type device for detecting aluminum melt inclusions and method thereof Download PDFInfo
- Publication number
- CN101398363B CN101398363B CN2008102019191A CN200810201919A CN101398363B CN 101398363 B CN101398363 B CN 101398363B CN 2008102019191 A CN2008102019191 A CN 2008102019191A CN 200810201919 A CN200810201919 A CN 200810201919A CN 101398363 B CN101398363 B CN 101398363B
- Authority
- CN
- China
- Prior art keywords
- aluminum melt
- check weighing
- pressure vessel
- crucible
- weight
- 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
Images
Landscapes
- Manufacture And Refinement Of Metals (AREA)
- Investigating And Analyzing Materials By Characteristic Methods (AREA)
Abstract
The invention provides air-pressure typed aluminium melt inclusion detection equipment and a method thereof, belonging to the field of casting technique. The detection equipment consists of three parts: an air pressure system, a temperature control system and a filter weight-measurement system; the air pressure system is arranged outside the range of temperature control and provides stable pressure difference for the filter weight-measurement system; the temperature control system is arranged inside the air pressure system and at the external side of the filter part of the filter weight-measurement system, thus ensuring stable temperature during the filtration process; the filter weight-measurement system consists essentially of two parts: a filter part and a weight-measurement part, wherein, the filter part is arranged in the temperature control system and the weight-measurement part is placed right below the filter part; the filter weight-measurement system completes the filtration of the inclusion in the aluminium melt and measures and memorizes the weight of the filtrated aluminium melt in real time. The pressure difference by air pressurization is high, thus avoiding the vacuum pressurized and filtrated hot air from corroding the container; the pressure container has safe and stable structure; and the equipment has compact structure and the measurement result of the inclusions in the aluminium melt is exact and highly effective.
Description
Technical field
What the present invention relates to is a kind of checkout equipment and method of casting technology field, specifically a kind of air pressure type device for detecting aluminum melt impurity and method thereof.
Background technology
Casting industry at aluminium, the on-the-spot cleanliness factor of aluminum melt is estimated apace is distinct issues always, because typical trapped oxide, salt, carbonide, nitride, boride etc. will have a strong impact on casting quality in the aluminium, so need before casting, effectively detect the cleanliness factor of aluminum melt, and carry out necessary slagging-off and handle.Existing conventional is measured in the method for aluminum melt cleanliness factor, and wet chemical analysis or instrumental analysis are mingled with not very successful, because be mingled with skewness; Though quantitative metallography is robotization, the same whether representative problem of sampling that exists; Electron-beam melting in the capacity analysis method and centrifugal analysis sampling are complicated, further analyze also relatively time-consuming, can not finish online express-analysis.And these methods all are not suitable for on-the-spot fast detecting.
At present external PoDFA that ABB AB developed and Prefil-FOOTPRINTER equipment have the function of the snotter that detects aluminum melt, and wherein PoDFA filters to take out by porous ceramics and contains the sample of snotter, and carries out quantitative metallographic analysis.Its deficiency is: be the equipment as a kind of snotter sampling, and can not realize fast detecting.Though Prefil-FOOTPRINTER can realize on-line measurement faster and make things convenient for snotter sampling, heat and filter asynchronously, the viscosity differences that is caused by temperature contrast will cause result error.
Find through literature search prior art, the snotter checkout equipment of mentioning in the Chinese invention patent " the snotter checkout equipment in aluminium and the aluminium alloy melt " (patent No. CN101256131) has been realized the online testing result that provides fast, the function of effectively analyzing aluminum melt impurity directly perceived.It has temperature, vacuum degree control ability, weight data processing power and system upgrade ability more easily, simple to operate, the function-stable of control system, but also come with some shortcomings in actual use: though adopt the method that vacuumizes pressurization simple and safe, but pressure differential has only an atmospheric pressure at most, and hot-air is corrosive to vessel and weight sensor in the vacuum pressed filter process.
Summary of the invention
The present invention is directed to the deficiencies in the prior art and defective, a kind of air pressure type device for detecting aluminum melt impurity and method thereof are provided, make it be used for aluminum melt casting field quick detection snotter, and make things convenient for the snotter sampling, compact equipment has solved and has vacuumized the pressurised equipment etching problem.
The present invention is achieved by the following technical solutions:
Air pressure type device for detecting aluminum melt impurity involved in the present invention is made up of baric systerm, temperature control system, filtration check weighing system three parts.Wherein:
Filtering check weighing system is made of in two sub-sections filtration fraction, check weighing portion, wherein filtration fraction is arranged on temperature control system inside, check weighing partly be placed on filtration fraction under, filter check weighing system and finish aluminum melt and cross elimination and be mingled with, and the weight of the aluminum melt that filters is measured in real time and preserved;
Baric systerm is arranged on the temperature control system periphery, provides pressure stable poor for filtering check weighing system;
Temperature control system in the outside of filtering the check weighing system filtration fraction, can be guaranteed the temperature stabilization in the filter process in the inside of baric systerm.
Described baric systerm is by stationary platform, pressure vessel, baroceptor, voltage-controlled table, solenoid valve, gas cylinder is formed, stationary platform is positioned at the pressure vessel bottom, play the effect of fixation pressure container, baroceptor is installed on the pressure vessel top, baroceptor can be converted into the pressure that changes in the 0-500KPa scope in the pressure vessel normalized current signal of the 4-20mA of standard, voltage-controlled table is positioned over outside the pressure vessel, can receive the current signal of baroceptor output, and control signal exported to solenoid valve, solenoid valve is a switch of the outside gas transmission of gas cylinder, be in closed condition under normal conditions, the break-make under the duty is controlled by voltage-controlled table.
The filtration fraction of described filtration check weighing system is made up of first crucible, floamed ceramics filtrating piece, the ceramic fiber paper of bottom of which has holes, first crucible is fixed on the bottom of the pressure vessel inwall of pressure system, be encased inside the ceramic fiber paper sealing between first crucible bottom and the pressure vessel, floamed ceramics filtrating piece places in the first crucible bottom groove of filtering system, and the part that contacts with first crucible is provided with the refractory felt sealing.
The check weighing part of described filtration check weighing system is made up of electronic balance, computing machine, thermal insulation board, second crucible, electronic balance be positioned at filter the check weighing system filtration fraction under, be connected with computing machine by data line, electronic balance can be measured the weight of the aluminum melt that filters come, and send weight signal to computing machine and handle and preserve, thermal insulation board is positioned on the electronic balance, and second crucible is placed on the thermal insulation board.
Described temperature control system is made up of temp controlled meter, thermopair, resistance wire, combustion chamber, thermopair places in the crucible that filters check weighing system, and be connected with temp controlled meter, resistance wire places within the combustion chamber, combustion chamber is placed on the pressure vessel bottom of baric systerm, and it is heat insulation that the space between combustion chamber and the pressure vessel adds fire-resistant cotton.
Vapour-pressure type aluminum melt impurity detection method involved in the present invention is to adopt above-mentioned air pressure type device for detecting aluminum melt impurity to carry out, and comprises the steps:
Step 1: at first under the control of temp controlled meter, heating furnace is preheating to target temperature;
Step 2: open pressure vessel, pre-melted tested aluminum melt is injected in first crucible, the closing presure container, and be incubated to target temperature;
Step 3: by voltage-controlled table control pressurization, voltage-controlled table can be according to the break-make of the force value control electromagnetic valve of pressure vessel, and the pressure vessel internal pressure is controlled at a desired value the most at last;
Step 4: aluminum melt can flow through floamed ceramics filtrating piece under pressure, removes snotter through screening, deposition and the deep-bed filtration of foamed ceramics.Clean aluminum melt flows in second crucible, and its weight can be measured by electronic balance and be preserved by computing machine in real time, and real-time rendering goes out weight-time curve.
Step 5: the floamed ceramics filtrating piece of enrichment snotter is taken out, it is cut in axis along cylindrical foam ceramic filter, and carry out quantitative metallographic analysis, measure the total area A of snotter on the cross section, and then utilize the weight W of the clean melt that electronic balance records, obtain the cleanliness factor of aluminum melt according to A, W.
Apparatus of the present invention adopt the gas boosting mode, can obtain higher pressure differential than the vacuum pressed mode of routine, and can avoid in the vacuum pressed filter process hot-air to the etching problem of container; The N layer structure of pressure vessel can guarantee pressure vessel safety better; The height of second crucible and the ratio of maximum gauge satisfy≤1, and such size can reduce the height of crucible under the situation of same volume, thereby makes compact conformation, reduce the height that aluminium liquid descends, and preventing to impact electronic balance influences measurement result.
Description of drawings
Fig. 1 is a structural representation of the present invention
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated: present embodiment is being to implement under the prerequisite with the technical solution of the present invention, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, the related air pressure type device for detecting aluminum melt impurity of present embodiment is made up of baric systerm, temperature control system, filtration check weighing system three parts.Wherein baric systerm is arranged on the temperature control system periphery, provides pressure stable poor for filtering check weighing system.Temperature control system in the outside of filtering the check weighing system filtration fraction, can be guaranteed the temperature stabilization in the filter process in the inside of baric systerm.Filtering check weighing system mainly is made up of two parts, wherein filtration fraction is arranged on temperature control system inside, check weighing partly be placed on filtration fraction under, filter check weighing system and finish aluminum melt and cross elimination and be mingled with, and the weight of the aluminum melt that filters is measured in real time and preserved.
Described baric systerm is by voltage-controlled table 3, baroceptor 5, gas cylinder 6, solenoid valve 7, stationary platform 8, pressure vessel 16 is formed, stationary platform 8 is positioned at pressure vessel 16 bottoms, play the effect of fixation pressure container 16, baroceptor 5 is installed on pressure vessel 16 tops, baroceptor 5 can be converted into the pressure that changes in the 0-500KPa scope in the pressure vessel 16 the normalized current signal of the 4-20mA of standard, voltage-controlled table 3 is positioned over outside the pressure vessel 16, can receive the current signal of baroceptor 5 outputs, and control signal exported to solenoid valve 7, solenoid valve 7 is switches of gas cylinder 6 outside gas transmissions, be in closed condition under normal conditions, the break-make under the duty is controlled by voltage-controlled table.
The filtration fraction of described filtration check weighing system is by first crucible 14, floamed ceramics filtrating piece 12, the ceramic fiber paper 13 of bottom of which has holes, and the electronic balance 9 of check weighing part, computing machine 1, thermal insulation board 10, second crucible 11 are formed.First crucible 14 is fixed on the bottom of pressure vessel 16 inwalls of pressure system, be encased inside ceramic fiber paper sealing 13 between first crucible, 14 bottoms and the pressure vessel 16, floamed ceramics filtrating piece 12 places in first crucible, 14 bottom grooves of filtering system, and the part that contacts with first crucible 14 adds the refractory felt sealing.
The check weighing part of described filtration check weighing system is made up of computing machine 1, electronic balance 9, thermal insulation board 10, second crucible 11, electronic balance 9 be positioned at filter the check weighing system filtration fraction under, be connected with computing machine 1 by data line, electronic balance 9 can be measured the weight of the aluminum melt that filters come, and send weight signal to computing machine 1 and handle and preserve, thermal insulation board 10 is positioned on the electronic balance 9, play heat-blocking action, prevent to filter the measuring accuracy of the temperatures involved electronic balance 9 of the aluminum melt that gets off, second crucible 11 is placed on the thermal insulation board 10.
Described temperature control system is made up of temp controlled meter 2, thermopair 4, resistance wire 15, thermopair 2 places in first crucible 14 that filters check weighing system, and be connected with temp controlled meter 2, resistance wire 15 places in the outer combustion chamber of first crucible 14 that filters check weighing system, and to add fire-resistant cotton heat insulation the space between the pressure vessel 16.
The gas of packing in the described gas cylinder 6 can be nontoxic gases such as argon gas, nitrogen, air.
Described pressure vessel 16 has N layer structure, N 〉=1, and outermost layer is a metal, such as stainless steel, inner each layer can carry out combination in any by fire resistive material, stupalith or other exotic materials, and the result of combination makes pressure vessel can resist 0-2000 ℃ temperature, the pressure of 0-1000KPa.
The height of described second crucible 11 and the ratio of maximum gauge satisfy≤1, and such size can reduce the height of crucible under the situation of same volume, thereby makes compact conformation, reduce the height that aluminium liquid descends, and preventing to impact electronic balance 9 influences measurement result.
Adopt the equipment of said structure, the concrete implementation step of the detection method that present embodiment relates to is as follows:
Step 1:
At first under the control of temp controlled meter 2, heating furnace is preheating to target temperature;
Step 2:
Step 3:
By voltage-controlled table 3 control pressurization, voltage-controlled table 3 meeting is according to the break-make of the force value control electromagnetic valve 7 of pressure vessel 16, and pressure vessel 16 internal pressures are controlled at a desired value the most at last;
Step 4:
Aluminum melt flows through floamed ceramics filtrating piece 12 under the pressure of step 3 setting, because foamed ceramics has the 3 D stereo network skeleton and connects air hole structure mutually, snotter is hunted down through screening, deposition and deep-bed filtration in the aluminum melt.Screening, deposition and deep-bed filtration through foamed ceramics are removed snotter.Clean aluminum melt flows in second crucible 11, and its weight can be measured by electronic balance 9 and be preserved by computing machine 1 in real time, and real-time rendering goes out weight-time curve;
Step 5:
The floamed ceramics filtrating piece 12 of enrichment snotter is taken out, it is cut in axis along cylindrical foam ceramic filter 12, and carry out quantitative metallographic analysis, measure the total area A of snotter on the cross section, and then utilize the weight W of the clean melt that electronic balance 9 records, come the cleanliness factor of quantitative description aluminum melt according to following computing formula:
Wherein, C is the cleanliness factor of aluminum melt, the mm of unit
2G
-1
A is the total area of snotter, the mm of unit
2
W is the weight of the clean aluminum melt of filtration, the g of unit.
Present embodiment can utilize weight-time curve to carry out real-time analysis, and slope of a curve is big more, and filter fast more is described, also is that aluminum melt is clean more; Slope of a curve is more little, and filter slow more is described, also is that aluminum melt is dirty more.Compare the inclusion content height that just can determine to sxemiquantitative this melt by this curve and known curve.This method can satisfy the demand of on-site rapid measurement.
The resulting pressure differential height of present embodiment gas boosting avoids vacuum pressed to filter the corrosion of hot-air to container, the construction of pressure vessel safety and stability, and compact equipment, the aluminum melt impurity measurement result is accurately efficient.
Claims (7)
1. an air pressure type device for detecting aluminum melt impurity is characterized in that, form by baric systerm, temperature control system, filtration check weighing system three parts, wherein:
Filtering check weighing system partly is made up of filtration fraction, check weighing, wherein filtration fraction is arranged on temperature control system inside, check weighing partly be placed on filtration fraction under, filter check weighing system and finish aluminum melt and cross elimination and be mingled with, and the weight of the aluminum melt that filters is measured in real time and preserved;
Baric systerm is arranged on the temperature control system periphery, provides pressure stable poor for filtering check weighing system;
Temperature control system in the outside of filtering the check weighing system filtration fraction, is guaranteed the temperature stabilization in the filter process in the inside of baric systerm;
Described baric systerm is by stationary platform, pressure vessel, baroceptor, voltage-controlled table, solenoid valve, gas cylinder is formed, wherein: stationary platform is positioned at the pressure vessel bottom, baroceptor is installed on the pressure vessel top, baroceptor is converted into the pressure that changes in the 0-500KPa scope in the pressure vessel normalized current signal of the 4-20mA of standard, voltage-controlled table is positioned over outside the pressure vessel, receive the current signal of baroceptor output, and control signal exported to solenoid valve, solenoid valve is a switch of the outside gas transmission of gas cylinder, be in closed condition under normal conditions, the break-make under the duty is controlled by voltage-controlled table.
2. air pressure type device for detecting aluminum melt impurity according to claim 1 is characterized in that, described pressure vessel has N layer structure, N 〉=1, and outermost layer is a metal, pressure vessel can be resisted 0-2000 ℃, the pressure of 0-1000KPa.
3. air pressure type device for detecting aluminum melt impurity according to claim 1 is characterized in that, described gas cylinder wherein is equipped with argon gas, nitrogen or air.
4. the snotter in the aluminum melt according to claim 1 detects and sampling equipment, it is characterized in that, the filtration fraction of described filtration check weighing system is made up of first crucible, floamed ceramics filtrating piece, the ceramic fiber paper of bottom of which has holes, first crucible is fixed on the bottom of the pressure vessel inwall of baric systerm, be encased inside the ceramic fiber paper sealing between first crucible bottom and the pressure vessel, floamed ceramics filtrating piece places in the first crucible bottom groove of filtering system, and the part that contacts with first crucible is provided with the refractory felt sealing.
5. air pressure type device for detecting aluminum melt impurity according to claim 1, it is characterized in that, the check weighing part of described filtration check weighing system is made up of electronic balance, computing machine, thermal insulation board, second crucible, electronic balance be positioned at filter the check weighing system filtration fraction under, be connected with computing machine by data line, electronic balance can be measured the weight of the aluminum melt that filters come, and send weight signal to computing machine and handle and preserve, thermal insulation board is positioned on the electronic balance, and second crucible is placed on the thermal insulation board.
6. air pressure type device for detecting aluminum melt impurity according to claim 5 is characterized in that, the height of described second crucible and the ratio of maximum gauge satisfy≤1.
7. air pressure type device for detecting aluminum melt impurity according to claim 4, it is characterized in that, described temperature control system is made up of temp controlled meter, thermopair, resistance wire, combustion chamber, thermopair places in first crucible that filters check weighing system, and be connected with temp controlled meter, resistance wire places within the combustion chamber, and combustion chamber is placed on the pressure vessel bottom of baric systerm, and it is heat insulation that the space between combustion chamber and the pressure vessel is provided with fire-resistant cotton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102019191A CN101398363B (en) | 2008-10-30 | 2008-10-30 | Air pressure type device for detecting aluminum melt inclusions and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102019191A CN101398363B (en) | 2008-10-30 | 2008-10-30 | Air pressure type device for detecting aluminum melt inclusions and method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101398363A CN101398363A (en) | 2009-04-01 |
| CN101398363B true CN101398363B (en) | 2011-06-08 |
Family
ID=40517069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102019191A Expired - Fee Related CN101398363B (en) | 2008-10-30 | 2008-10-30 | Air pressure type device for detecting aluminum melt inclusions and method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101398363B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104988323B (en) * | 2015-06-11 | 2017-03-22 | 深圳阿尔泰克轻合金技术有限公司 | Hot aluminum slag treatment equipment circuit and control method of thereof |
| CN105094163A (en) * | 2015-07-01 | 2015-11-25 | 安庆市鸿裕工业产品设计有限公司 | Air pressure adjusting device for analytical balance |
| CN108896432A (en) * | 2018-08-15 | 2018-11-27 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of hot weighing-appliance and the method for measuring burning velocity |
-
2008
- 2008-10-30 CN CN2008102019191A patent/CN101398363B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101398363A (en) | 2009-04-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2408642C (en) | Method and device for the monitoring of gases | |
| CN101398363B (en) | Air pressure type device for detecting aluminum melt inclusions and method thereof | |
| CN105954137A (en) | In-situ rapid sampling thermogravimetric analyzer | |
| US6216526B1 (en) | Gas sampler for molten metal and method | |
| CN106769759B (en) | A kind of infiltrative device of test steel reinforced concrete protective layer and accelerated test method | |
| CN101256131B (en) | Apparatus for detection of foreign material in aluminum as well as aluminum alloy fondant | |
| US5827982A (en) | Portable liquid metal filtration device for inclusion analysis | |
| Raether et al. | A novel thermo-optical measuring system for the in situ study of sintering processes | |
| Sparkman | Chill measurement by thermal analysis | |
| CN204945070U (en) | A kind of flash point tester for minisize oil plants with alarm function | |
| CN113933213A (en) | Binary mixed gas mixing ratio measuring method and device based on gas substitution method | |
| GB2307049A (en) | Filtration apparatus and method | |
| CN215812760U (en) | Device for obtaining slag measuring sample for enriching impurities in aluminum melt | |
| CN106596902A (en) | Portable full-automatic apparatus for testing hydrogen sulfide in petroleum products | |
| KR0120871Y1 (en) | Apparatus of pressure reduction and condensation for gas quantity measurementt of molten metal | |
| Anyalebechi | Techniques for determination of the Hydrogen Content in Aluminium and its Alloys—A Review | |
| JPS642210B2 (en) | ||
| CN220104918U (en) | Sand core detection device | |
| CN210626390U (en) | Oxygen content measuring device for furnace chamber of plasma welding machine | |
| US5894085A (en) | Device for determining the purity of a metal alloy | |
| CN114414422B (en) | Method and device for measuring content of diffusible hydrogen in welding material deposited metal | |
| CN2533458Y (en) | Quick integrative thermometric sampling sensor | |
| CA2089859A1 (en) | Apparatus for analysing carbon products | |
| CN111707757B (en) | Transformer oil online chromatographic analysis method based on FID | |
| CN212060108U (en) | Material performance detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110608 Termination date: 20191030 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |