CN103869848A - Heating furnace for plate sample fatigue test - Google Patents
Heating furnace for plate sample fatigue test Download PDFInfo
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- CN103869848A CN103869848A CN201410090003.9A CN201410090003A CN103869848A CN 103869848 A CN103869848 A CN 103869848A CN 201410090003 A CN201410090003 A CN 201410090003A CN 103869848 A CN103869848 A CN 103869848A
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Abstract
The invention belongs to an aero-engine performance test technology and relates to a novel high-temperature heating furnace for a plate sample high-temperature fatigue test. Imported heating bodies and a novel thermal insulation material are adopted; long-strip platy shapes of the heating furnace are parallel with the sample plane and are in double-faced array, the uniform horizontal temperature of samples is ensured, the heating temperature rise speed is rapid, and the thermal insulation property is excellent. An upper and a lower thermoelectric couple are axially adopted for adjusting power output of two sections of heating bodies, two temperature control thermoelectric couples are located between the samples and the heating bodies, the temperature of the samples within axial 30 mm is ensured, the gradient deviation can reach 2 DEG C, the samples of the heating furnace are enabled to reach working temperature, and a thermoelectric couple is used as a sample temperature thermocouple to measure the real temperature of the samples; the structure of the heating furnace is designed into a bidirectional folio form, a high-temperature clamp is arranged outside the heating furnace, two ends of the samples can directly extend out of upper and lower ends of the furnace and are directly connected with a main machine clamp, and the usage of the high-temperature clamp is effectively reduced.
Description
Technical field
The invention belongs to aero-engine performance measuring technology, relate to a kind of Novel high-temperature heating furnace that fatique testing at elevated temperature is used for sheet coupon.
Background technology
The heating furnace that conventional high-temperature torture test is used is generally drum type brake muffle furnace or large-scale block furnace, and these two kinds of heating furnaces are Φ 1.5mm Kanthal wire heater 1 to be coiled into minor spiral fill in ceramic boiler tube 2, two boiler tube work side by side.Its major defect is: 1. for heating wider (as 20mm) sheet coupon 3, due to heat transfer type, being heated of specimen width direction must be inhomogeneous, and this will produce certain influence to the degree of accuracy of test findings; 2. ferrum-chromium-aluminum heater is for a long time in more than 1200 ℃ humid test, easily because the reasons such as oxidation are damaged, and each working time of sheet material torture test all more than 6 days, use for a long time this heater to be not suitable for.Therefore need design to be applicable to the long-time sheet coupon test using and add electrothermal stove.
Summary of the invention
The object of the invention is to propose a kind of heating furnace that sheet coupon torture test is used that is suitable for.Technical solution of the present invention is, heating furnace adopts two identical square resistance furnace opposite opened structures, two square resistance furnaces are arranged on sliding straight rail brackets, square resistance furnace is by double-deck furnace shell, refractory insulating layer and four heatings form, electrical heating elements is strip silicon carbide elements, four electrical heating elements are arranged on the inner chamber left and right sides of double-deck furnace shell internal layer, the electrode of electrical heating elements stretches out double-deck furnace shell and is connected with color touch screen formula programmable automatic measuring and controlling temperature system, the inner casing of double-deck furnace shell is vacuum forming lightweight alumina plate, between the shell of vacuum forming lightweight alumina plate and double-deck furnace shell, leave air heat-insulation layer, on one of them square resistance furnace, have view window, double-deck quartz glass is installed on view window, the surrounding of double-deck quartz glass arranges cooling water circulation water pipe, in square resistance furnace, dispose three thermopairs, wherein one is the temperature thermocouple being bundled on sample, other two is temperature-control heat couple, three thermopairs are all connected with programmable automatic measuring and controlling temperature system, corresponding position on two square resistance furnace opposite faces has the mounting groove that sheet coupon is installed, when heating furnace work, the working portion of sheet coupon is placed between two square resistance furnaces, the retained part of sheet coupon is exposed to outside square resistance furnace, two square resistance furnaces clamp sheet coupon fixing.
Described electrical heating elements is strip silicon carbide elements, and the power of electrical heating elements is 500W, and programming rate rose to 1200 ℃ of maximum operating temperatures in 20 seconds.
The inner chamber of described double-deck furnace shell is rectangular parallelepiped, and inner chamber is of a size of the dark 80mm of the wide 140mm X of high 50mm X, and external form is also rectangular parallelepiped, and the mounting groove that sheet coupon is installed is of a size of the dark 15mm of wide 110mm X.
The surface, outer field all around of described double-deck furnace shell has air vent.
In significant height in the inner chamber of the double-deck furnace shell of described two square resistance furnaces, upper and lower symmetrical eight electrical heating elements of placing, and symmetrical before and after sheet coupon, guarantee that sheet coupon is horizontal, front-back thermally equivalent, axial-temperature gradient regulates automatically.
Described with color touch screen formula programmable automatic measuring and controlling temperature system, 0.2 grade of precision, 0.1 ℃ of display sensitivity.
Described heating furnace adopts opposite opened structure, and the single square resistance furnace of heating furnace entirety and heating furnace carries out front, rear, left and right and moves on sliding straight rail brackets.
Described view window is of a size of wide 120mm × high 15mm.
The advantage that the present invention has and beneficial effect, the present invention be overcoming that traditional cylindrical muffle furnace and block furnace firing rate are slow, the large and weight of volume, inconvenient operation, temperature control poor sensitivity and to the basis of the shortcomings such as having relatively high expectations of high-temperature clamp on and development and Design.This sheet coupon torture test heating furnace has adopted import heater and novel heat preserving and insulating material, and its long strip-board shape shape is parallel with sample plane, and two-sided arrangement, has guaranteed that sample transverse temperature is even, and heat temperature raising speed is fast, heat-insulating property excellence.For the fatigue tester high-temperature clamp problem that the life-span reduces under hot conditions, the present invention axially adopts upper and lower two thermopairs to carry out power stage adjusting to two sections of heaters, two temperature-control heat couple are between sample and heater, guarantee sample temperature in axial 30mm, gradient deviation can reach 2 ℃, make heating furnace sample accurately reach working temperature, then use a thermopair as sample temperature thermocouple, measure sample true temperature; Heating furnace structure is designed to two-way bi-parting, and high-temperature clamp is placed in outside heating furnace, and sample two ends can directly be stretched out the outer upper and lower two ends of stove and are directly connected with main frame fixture, effectively reduce the use of high-temperature clamp.Two-way bi-parting heating furnace structure is installed on rail plate, and heating furnace can easily be adjusted on the geometric center position of testing machine center and tested sample, guarantees accurate location, steady in a long-term constant.The small volume and less weight of the present invention's entirety, configuration sliding rail, easy to operate.Survey temperature-controlling system and also adopt the intellectual colored touch screen of man-machine interface (HMI), temperature-rise period, without overtemperature, overshoot, is guaranteed the accuracy of test temperature.This sheet coupon torture test heating furnace can replace Vintage Product in the past, becomes the indispensable a new generation's test product of enterprise.
Accompanying drawing explanation
Fig. 1 is conventional cartridge heater;
Fig. 2 is existing drum type brake heating furnace cut-open view;
Fig. 3 is heating furnace structure schematic diagram of the present invention;
Fig. 4 is the square resistance furnace structure of the present invention cut-open view;
Fig. 5 is square resistance furnace type of heating schematic diagram of the present invention;
Fig. 6 is the heater that heating furnace of the present invention is selected;
Fig. 7 is temperature controller and body of heater johning knot composition;
Fig. 8 is heating furnace structure of the present invention location and installation figure on main frame.
Embodiment
Shown in 3-8, the present invention will be further described by reference to the accompanying drawings.Heating furnace 4 is made up of two identical square resistance furnaces 5, and its structure is opposite opened, and two square resistance furnaces 5 are installed on sliding straight rail brackets 18, and support 18 is fixed on testing machine column 19, conveniently on the face perpendicular to column 19, moves forward and backward.Square resistance furnace 5 is made up of double-deck furnace shell 6, refractory insulating layer 7 and four heatings 8.Between the internal layer of double-deck furnace shell 6 and skin, vacuum forming lightweight alumina plate refractory insulating layer 7 is set, vacuum forming lightweight alumina plate 7 leaves gap with the outer interlayer of double-deck furnace shell.Electrical heating elements 8 is strip silicon carbide elements, four electrical heating elements 8 are arranged on the inner chamber left and right sides of double-deck furnace shell 6 internal layers, and the electrode 11 of electrical heating elements 8 stretches out double-deck furnace shell and is connected with color touch screen formula programmable automatic measuring and controlling temperature system 12.On one of them square resistance furnace, have view window 14, double-deck quartz glass 15 is installed on view window, the surrounding of double-deck quartz glass 15 arranges cooling water circulation water pipe, in square resistance furnace, dispose three thermopairs 13, wherein one is the temperature thermocouple being bundled on sample, other two is temperature-control heat couple, three thermopairs are all connected with programmable automatic measuring and controlling temperature system 12, corresponding position on two square resistance furnace opposite faces has the mounting groove 16 that sheet coupon is installed, when heating furnace work, the working portion of sheet coupon 17 is placed between two square resistance furnaces 5, the retained part of sheet coupon 17 is exposed to outside square resistance furnace, two square resistance furnaces 5 clamp sheet coupon fixing.Two square resistance furnaces 5 are individually fixed on left and right two side stands 18 of rail plate, are combined one of rear formation and have up and down and be appropriate to test and attach the through hole of axial use.The design of inner chamber heating chamber 9 is tested with size of sample as standard to meet, in stove, point left and right cavity is even, configuration is provided with eight silicon carbide heaters, can effectively guarantee and meet the request for utilization under heating furnace high-temperature state, base of ceramic 10 is fixed on the metal body of heater of light-weight refractory heat-insulation layer 7 and stove outer covering closely, and this structure can effectively improve the high temperature soaking performance in integral heat insulation performance and the furnace chamber of heating furnace.Heating control system adopts sequencing Intelligent PID Control mode, by connecting temperature-controlling system 12, interior upper and lower two sections of heating furnace heating chamber 9 is carried out to controlled homogeneity heating, to realize the intelligent automatic adjusting thermograde in temperature-rise period, and form the samming in the required effective gauge length of sample and reach optimum temperature deviation.
Embodiment
1. designed one for sheet coupon, inner chamber profile is all the small size heating furnace of rectangular parallelepiped.Physical dimension is the dark 250mm of the wide 300mmX of high 90mmX, the dark 80mm of the wide 140mmX of the high 50mmX of inner chamber (heating chamber), and upper and lower fire door is of a size of the dark 15mm of wide 110mmX, and heating furnace front, with observation window, is of a size of wide 120mm × high 15mm.
2. adopted a kind of novel silicon carbide heater (profile is as Fig. 3), heater maximum operating temperature can reach 1700 ℃.This heater is the tabular of bar shaped elongated slot, and working portion physical dimension is the long 50mm of wide 12.5mmX, and every group of heater is two correct line spread, on circuit, connects.
3. in high 50mm heating zone, axial design two groups of heaters, before and after sample, totally eight heaters are arranged in parallel with sample formation 100mm Width.Upper and lower two groups of heaters are controlled respectively by two sections of temperature controllers, to guarantee to reach the thermograde of minimum 2 ℃ in axial 30mm.Every group of the highest power providing more than 600W of heater, can meet and sample is heated to working temperature (the highest 1200 ℃) in 30 minutes.
4. heating furnace adiabatic heat-insulation has adopted fabricated structure.Inner chamber is novel evacuated forming ceramic fiberboard, working temperature can reach 1400 ℃, heating furnace skin is double-deck stainless steel welding fabrication, it between bilayer, is the air buffer of 8mm, have many group louvres at the upper and lower periphery of furnace shell, to form moving air displacement interlayer, so that the temperature rise of furnace shell outermost layer is lower than 70 ℃, and can prevent the operating personnel's (see figure 4) of burning.
5. novel measuring temperature-controlling system adopts full-automatic sequencing fuzzy control method; configuration man-machine interface color touch screen; observing and controlling temperature is accurate, manipulation intuitive and convenient, and system is 0.2 class precision, 0.1 ℃ of display sensitivity; full Chinese interface; monitoring temperature in real time, shows thermometric, temperature control curve, has the preservation to curve; calling function, and abnormal data warning and defencive function can be artificially set.
6. in heating chamber, have three thermopairs, two for two sections of temperature controls, and one is tied to specimen surface and is shielded, and using the latter as specimen temperature benchmark, regulates two temperature-control heat couple, can guarantee the accuracy of specimen temperature.
Heating furnace by two symmetries independently square resistance furnace form, each resistance furnace contains inner chamber half, four heaters.Can on guide rail, horizontal exercise group become an entirety, also can entirety seesaw along another group guide rail, can guarantee the accurate location of heating furnace in testing machine central task district, and can guarantee that sample can accurately be positioned at heating furnace center, in deviation≤± 1mm, and in process of the test, (reach more than 6 days continuous workings) and remain unchanged.
8. while test, square resistance furnace is adjusted to respectively to sample center by guide rail and is integrally combined locking simultaneously, can open temperature controller and set the required working temperature of test, by intelligent temperature control instrument and temperature control thermopair, heating furnace is carried out to robotization control, can automatically regulate the output size of two sections heating power, can effectively avoid temperature overshoot override, make specimen temperature reach rapidly setting value, the thermograde of two sections also will enter qualified district automatically.According to the requirement of test and the specification of sample, take the center of heating furnace inner chamber as symmetrical, insert respectively up and down two temperature control thermocouples, and approach sample as far as possible, on sample, tie up a thermopair (all adopting S type thermopair) simultaneously, and tie up firmly with pottery rope, prevent the direct radiation of heater to thermopair.
Claims (8)
1. a sheet coupon test heating furnace, it is characterized in that, heating furnace adopts two identical square resistance furnace opposite opened structures, two square resistance furnaces are arranged on sliding straight rail brackets, square resistance furnace is by double-deck furnace shell, refractory insulating layer and four heatings form, electrical heating elements is strip silicon carbide elements, four electrical heating elements are arranged on the inner chamber left and right sides of double-deck furnace shell internal layer, the electrode of electrical heating elements stretches out double-deck furnace shell and is connected with color touch screen formula programmable automatic measuring and controlling temperature system, the inner casing of double-deck furnace shell is vacuum forming lightweight alumina plate, between the shell of vacuum forming lightweight alumina plate and double-deck furnace shell, leave air heat-insulation layer, on one of them square resistance furnace, have view window, double-deck quartz glass is installed on view window, the surrounding of double-deck quartz glass arranges cooling water circulation water pipe, in square resistance furnace, dispose three thermopairs, wherein one is the temperature thermocouple being bundled on sample, other two is temperature-control heat couple, three thermopairs are all connected with programmable automatic measuring and controlling temperature system, corresponding position on two square resistance furnace opposite faces has the mounting groove that sheet coupon is installed, when heating furnace work, the working portion of sheet coupon is placed between two square resistance furnaces, the retained part of sheet coupon is exposed to outside square resistance furnace, two square resistance furnaces clamp sheet coupon fixing.
2. a kind of sheet coupon test heating furnace according to claim 1, is characterized in that, described electrical heating elements is strip silicon carbide elements, and the power of electrical heating elements is 500W, and programming rate rose to 1200 ℃ of maximum operating temperatures in 20 seconds.
3. a kind of sheet coupon test heating furnace according to claim 1, it is characterized in that, the inner chamber of described double-deck furnace shell is rectangular parallelepiped, and inner chamber is of a size of the dark 80mm of the wide 140mm X of high 50mm X, oven enclosure is also rectangular parallelepiped, and it is of a size of the dark 250mm of the wide 300mmX of high 90mmX.The mounting groove that sheet coupon is installed is of a size of the dark 15mm of wide 110mm X.
4. a kind of sheet coupon test heating furnace according to claim 1, is characterized in that, described double-layer furnace body, and inner chamber flame-proof thermal insulation material is vacuum forming lightweight alumina plate, the surface, all around of double-deck furnace shell shell has heat dissipation ventilation hole.
5. a kind of sheet coupon test heating furnace according to claim 1, it is characterized in that, in significant height in the inner chamber of the double-deck furnace shell of described two square resistance furnaces, upper and lower symmetrical eight electrical heating elements of placing, and symmetrical before and after sheet coupon, guarantee that sheet coupon is horizontal, front-back thermally equivalent, axial-temperature gradient regulates automatically.
6. a kind of sheet coupon test heating furnace according to claim 1, is characterized in that, described with color touch screen formula programmable automatic measuring and controlling temperature system, 0.2 grade of precision, 0.1 ℃ of display sensitivity.
7. a kind of sheet coupon test heating furnace according to claim 1, is characterized in that, described heating furnace adopts opposite opened structure, and the single square resistance furnace of heating furnace entirety and heating furnace carries out front, rear, left and right and moves on sliding straight rail brackets.
8. a kind of sheet coupon test heating furnace according to claim 1, is characterized in that, described view window is of a size of wide 120mm × high 15mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410090003.9A CN103869848B (en) | 2014-03-12 | 2014-03-12 | Sheet coupon torture test heating furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410090003.9A CN103869848B (en) | 2014-03-12 | 2014-03-12 | Sheet coupon torture test heating furnace |
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| CN103869848A true CN103869848A (en) | 2014-06-18 |
| CN103869848B CN103869848B (en) | 2016-01-06 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110779816A (en) * | 2019-11-12 | 2020-02-11 | 磐翼信息科技(上海)有限公司 | Detection device for detecting flexible pipeline |
| CN111578711A (en) * | 2020-05-13 | 2020-08-25 | 中国航发北京航空材料研究院 | High-temperature creep furnace for metal creep test |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5015825A (en) * | 1990-03-19 | 1991-05-14 | The United States Of America As Represented By The United States National Aeronautics And Space Administration | Furnace for tensile/fatigue testing |
| CN2690830Y (en) * | 2004-04-12 | 2005-04-06 | 钟运辉 | Movable high temperature vacuum furnace |
| CN1789441A (en) * | 2004-12-15 | 2006-06-21 | 中国科学院金属研究所 | Three-segment opposite-opening type fatigue and high temperature test integrated furnace |
| CN101706213A (en) * | 2009-12-11 | 2010-05-12 | 中国航空工业集团公司北京航空材料研究院 | Heating furnace for creep and rupture life tester |
| CN201680724U (en) * | 2010-04-08 | 2010-12-22 | 上海嘉翎仪表材料科技研究所 | High-temperature gradient furnace |
| CN201974042U (en) * | 2010-11-09 | 2011-09-14 | 上海嘉翎电子科技有限公司 | Vertical-type large-caliber wide-temperature-filed high-temperature tubular experimental electric furnace |
| CN202836202U (en) * | 2012-10-22 | 2013-03-27 | 修建东 | Long-service-life experimental electric furnace |
-
2014
- 2014-03-12 CN CN201410090003.9A patent/CN103869848B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5015825A (en) * | 1990-03-19 | 1991-05-14 | The United States Of America As Represented By The United States National Aeronautics And Space Administration | Furnace for tensile/fatigue testing |
| CN2690830Y (en) * | 2004-04-12 | 2005-04-06 | 钟运辉 | Movable high temperature vacuum furnace |
| CN1789441A (en) * | 2004-12-15 | 2006-06-21 | 中国科学院金属研究所 | Three-segment opposite-opening type fatigue and high temperature test integrated furnace |
| CN101706213A (en) * | 2009-12-11 | 2010-05-12 | 中国航空工业集团公司北京航空材料研究院 | Heating furnace for creep and rupture life tester |
| CN201680724U (en) * | 2010-04-08 | 2010-12-22 | 上海嘉翎仪表材料科技研究所 | High-temperature gradient furnace |
| CN201974042U (en) * | 2010-11-09 | 2011-09-14 | 上海嘉翎电子科技有限公司 | Vertical-type large-caliber wide-temperature-filed high-temperature tubular experimental electric furnace |
| CN202836202U (en) * | 2012-10-22 | 2013-03-27 | 修建东 | Long-service-life experimental electric furnace |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110779816A (en) * | 2019-11-12 | 2020-02-11 | 磐翼信息科技(上海)有限公司 | Detection device for detecting flexible pipeline |
| CN111578711A (en) * | 2020-05-13 | 2020-08-25 | 中国航发北京航空材料研究院 | High-temperature creep furnace for metal creep test |
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| CN103869848B (en) | 2016-01-06 |
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