CN104181067A - Device for detecting high temperature oxidation resistance of graphite roller sleeve in different atmospheres - Google Patents
Device for detecting high temperature oxidation resistance of graphite roller sleeve in different atmospheres Download PDFInfo
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- CN104181067A CN104181067A CN201310193659.9A CN201310193659A CN104181067A CN 104181067 A CN104181067 A CN 104181067A CN 201310193659 A CN201310193659 A CN 201310193659A CN 104181067 A CN104181067 A CN 104181067A
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- heating furnace
- graphite roller
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- oxide isolation
- oxidation
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Abstract
The invention relates to a device for detecting high temperature oxidation resistance of a graphite roller sleeve in different atmospheres, relates to an experimental device for detecting the high temperature oxidation resistance of the graphite roller sleeve, and solves the problem that the oxidation resistance of the graphite roller sleeve can not be evaluated quantitatively. The device comprises an oxidation medium providing apparatus, a heating furnace apparatus, a gas pipeline and metering apparatus, and a weighing apparatus, wherein the oxidation medium providing apparatus provides an oxidation environment during detection, is composed of a nitrogen cylinder and an oxygen container, and outputs the oxidation medium generated after synthesis of nitrogen and an oxygen-containing medium; the heating furnace apparatus is used for heating a graphite roller sleeve sample in different oxidation atmospheres; the gas pipeline and metering apparatus is used for conveying the oxidation medium into the heating furnace and is composed of a first gas pipeline and a second gas pipeline; and the weighing apparatus is used for metering the mass before and after oxidation of the graphite roller sleeve sample. The device realizes the objects of quantitatively evaluating the oxidation resistant capacity of the graphite roller sleeve in environments at a certain temperature, different oxidation media and concentrations.
Description
Technical field
The present invention relates to detect the experimental provision of graphite roller shell oxidation-resistance property, refer in particular to a kind of device that detects graphite roller and be enclosed within high temperature oxidation resistance in different atmosphere.
Background technology
Graphite roller shell is that a kind of silicon steel is produced the special accessory using with in heating furnace (annealing), be in heating-furnace, to rotate the lining rolling, it links together with rotating roller bearing, is installed in heating furnace, being driven together and rotate by roller bearing, is that silicon steel is produced indispensable special accessory.
Along with the production-scale continuous expansion of silicon steel, the consumption of graphite roller shell increases on year-on-year basis.But the current product technology standard that also there is no graphite roller shell, does not have supporting with it examination criteria and device yet, does not especially also have known conclusion to use for reference about the detection of its oxidation resistance and the technology of evaluation.And the quality of graphite roller shell and serviceable life, depend on to a great extent its oxidation resistant ability, therefore, tend to cause roller shell product quality to be difficult to evaluate to the unclear of graphite roller shell oxidation-resistance property, result of use is difficult to estimate, cause manufacturer to produce and meaningless consume and waste a large amount of roller shells for protecting silicon steel, and then cause the rising of silicon steel production cost, the decline of production efficiency.
Graphite roller cover, as rotating the lining rolling in a kind of heating-furnace, is supporting the silicon steel of high-speed mobile, and its surface long term contacts with silicon steel.In the stove of silicon steel heating furnace, temperature can reach 1100 DEG C of left and right, due to many reasons, inevitably has a small amount of residual oxygen and moisture in heating furnace.
Total institute is known, and graphite, as a kind of inflammable substance, is subject to oxidation in hot environment.Residual oxygen in stove and moisture will produce long-term high-temperature oxydation effect to graphite roller shell.The oxidation resistance of roller shell and result of use, directly have influence on the quality of silicon steel product; The life-span length of roller shell is related to the productive capacity of furnace apparatus, and short stop time in its life-span is long, and the productive capacity of furnace apparatus reduces, and loss increases.
Therefore, need to be to roller shell quality before use roller shell, the ability of anti-oxidant (oxidation of residual oxygen and moisture in opposing furnace gas) especially is wherein carried out quantitative evaluation.This assessment needs a kind of high-temperature oxydation equipment, it can not only set up hot environment, can also form and continue to keep certain oxide isolation concentration, finally realize the ability of resisting oxidation under the environment that pair roller is enclosed within uniform temperature, different oxide isolation and concentration thereof and carry out the object of quantitatively evaluating.
China is for graphite electrode, there is the standard (graphite electrode oxidimetry method GB3074.3-82) of oxidisability assay method, but, this assay method can only be measured the oxidation results of air as oxide isolation, and temperature is lower, at 650 DEG C, it is not suitable for the high temperature oxidation resistance for detection of the graphite roller shell in the present invention.
Summary of the invention
The object of the invention is the problem existing in order to overcome prior art, a kind of device that detects graphite roller and be enclosed within high temperature oxidation resistance in different atmosphere is provided, it can simulate different remaining oxygens and moisture under different temperatures environment, the inoxidizability of direct-detection graphite roller shell, is evaluated at the result of use in silicon steel heating furnace high-temperature (1100 DEG C).
The object of the invention is to be achieved through the following technical solutions:
Detect the device that graphite roller is enclosed within high temperature oxidation resistance in different atmosphere, it comprises:
Oxide isolation generator, is to provide the device of oxide isolation, the well-oxygenated environment of this oxide isolation when detecting, and it comprises:
Nitrogen cylinder, in-built nitrogen, its outlet is provided with nitrogen feeding pipe;
Containing oxygen device, be to provide the equipment of oxygen-containing medium, its input port is communicated with described nitrogen feeding pipe, and delivery outlet is provided with output channel, the oxide isolation generating after output nitrogen and oxygen-containing medium are synthetic;
Heating furnace device, is the device that graphite roller cover sample is heated in different oxidizing atmospheres, and it comprises:
Heating furnace;
Platinum filament, is hung in the body of heater of heating furnace, and graphite roller cover sample is hung on this platinum filament;
Gas pipe line and measuring apparatus, be that oxide isolation is quantitatively transported to the device in heating furnace, is placed between oxide isolation generator and heating furnace device, and it comprises:
Flow regulator, is a kind of regulating device that regulates and indicate gas flow, and its input end connects described output channel, and input oxide isolation carries out flow regulation and quantitatively instruction to it;
The first gas pipe line, is placed between flow regulator and heating furnace, and its one end is communicated with the output terminal of flow regulator;
The second gas pipe line, is quartz ampoule, is placed in heating furnace, and its one end is stretched out outside heating furnace and is connected with the other end of the first gas pipe line, and its other end leads to the body of heater of heating furnace;
Meausring apparatus is the device that the quality before and after oxidation is measured to graphite roller cover sample.
The described oxygen device that contains comprises:
Fan blower, is provided with wind conveying pipe;
Ratio adjusting valve, it has two entrances and a delivery outlet, and an one entrance is communicated with described wind conveying pipe, and the oxygen-containing medium of input is air, its another entrance is the input port containing oxygen device, be communicated with described nitrogen feeding pipe, input nitrogen, in ratio adjusting valve, nitrogen and air are synthetic, generation has residual oxygen content oxide isolation, the delivery outlet of ratio adjusting valve is provided with output channel, and output has residual oxygen content oxide isolation, and described residual oxygen content is regulated by ratio adjusting valve.
The described oxygen device that contains comprises:
Water container, is inside filled with water, and it is provided with top cover sealing, and the oxygen-containing medium providing is water;
Delivery pipe, inside and outside described top cover connection container, its one end is communicated with nitrogen feeding pipe, and the other end stretches to the bottom in water container;
Output channel, inside and outside described top cover connection container, its one end is led on the interior water liquid level of container, and what in other end output water container, nitrogen generated after becoming with hydration has moisture oxide isolation, and described moisture is regulated by the height of water liquid level in water container.
Described the first gas pipe line is flexible pipe.
Described meausring apparatus adopts the device of per mille gram precision.
Described heating furnace (21) adopts the adjustable electric furnace of programming rate, and its maximum heating temperature is 1400 DEG C.
Beneficial effect of the present invention:
The present invention is a kind of experiment pick-up unit, and it can produce the needed high temperature of experiment (1100 DEG C of left and right), also can form and maintain oxide isolation (residual oxygen, the moisture) concentration of certain (adjustable) simultaneously.Within the time of setting, the detected sample of heating, and sample is carried out to lasting oxidation, by the mass change of sample before and after test experience effect, evaluate this sample and support oxidation resistant ability.Realize the object that graphite roller is enclosed within the ability of resisting oxidation under the environment of uniform temperature, different oxide isolation and concentration thereof and is carried out quantitatively evaluating.
For further illustrating above-mentioned purpose of the present invention, design feature and effect, below with reference to accompanying drawing, the present invention is described in detail.
Brief description of the drawings
Fig. 1 is the apparatus structure schematic diagram that the present invention detects graphite roller and be enclosed within high temperature oxidation resistance in different atmosphere;
Fig. 2 is the structural representation of one of oxide isolation generator embodiment in Fig. 1;
Fig. 3 is two the structural representation of oxide isolation generator embodiment in Fig. 1.
Embodiment
Accompanying drawing below in conjunction with embodiment is elaborated to the specific embodiment of the present invention.
Referring to Fig. 1,
As shown in Figure 1, it comprises four devices to the device that detection graphite roller of the present invention is enclosed within high temperature oxidation resistance in different atmosphere:
1, oxide isolation generator
This is to provide the device of adjustable oxide isolation, this oxide isolation as detect time well-oxygenated environment, oxide isolation generator mainly comprises:
Nitrogen cylinder 11, in-built nitrogen, its outlet is provided with nitrogen feeding pipe 111;
Containing oxygen device 12, be to provide the equipment of oxygen-containing medium, its input port is communicated with the nitrogen feeding pipe 111 of described nitrogen cylinder 11, input nitrogen, delivery outlet is provided with output channel 13, the oxide isolation generating after output nitrogen and oxygen-containing medium are synthetic.
The actual conditions of producing according to silicon steel, the invention provides the structure of two kinds of oxide isolation generators, specifically two kinds different from oxygen device 12 structures, one is the generator with residual oxygen content oxide isolation (having the oxidizing atmosphere of residual oxygen content), and another kind is the generator with moisture oxide isolation (having the oxidizing atmosphere of moisture).
Have the structure of residual oxygen content oxide isolation generator as shown in Figure 2, it comprises:
Nitrogen cylinder 11, in-built nitrogen, its outlet is provided with nitrogen feeding pipe 111;
Containing oxygen device 12, it comprises: fan blower 121, is provided with wind conveying pipe 1211, ratio adjusting valve 122, it has two entrances and a delivery outlet, input two kinds of gas with various, and can regulate as required two kinds of gases to enter the ratio (being existing product) in valve, an one entrance is communicated with described wind conveying pipe 1211, make fan blower 121 provide air (oxygen-containing medium) for ratio adjusting valve 122, its another entrance is the input port containing oxygen device 12, be communicated with the nitrogen feeding pipe 111 of described nitrogen cylinder 11, input nitrogen, synthetic at the interior nitrogen of ratio adjusting valve 122 and air, generation has residual oxygen content oxide isolation, the delivery outlet of ratio adjusting valve 122 is provided with output channel 13, output has residual oxygen content oxide isolation, wherein residual oxygen content number regulate and obtain by ratio adjusting valve 122.
Have the structure of moisture oxide isolation generator as shown in Figure 3, it comprises:
Nitrogen cylinder 11, in-built nitrogen, its outlet is provided with nitrogen feeding pipe 111;
Containing oxygen device 12, it comprises: water container 123, inside be filled with water 124, it is provided with top cover 1231 and seals, the oxygen-containing medium providing is water, the end face of top cover 1231 is provided with the inside and outside pipe of two connection containers, one is delivery pipe 125, its one end is communicated with nitrogen feeding pipe 111, the other end stretches to the bottom in water container 123, another root is the output channel 13 containing oxygen device 12, its one end is led on the interior water liquid level of container, output channel 13 is exported synthetic rear generation of the interior nitrogen G&W of water container 123 (oxygen-containing medium) and is had moisture oxide isolation, it is to utilize the height of water liquid level 1241 in water container to regulate the moisture in nitrogen, synthesize the oxidizing atmosphere of certain moisture, , moisture is regulated by the water liquid level height in water container.In the present embodiment, in order to reduce the impact of moisture content on flow regulator 31, in the present embodiment, flow regulator 31 can be arranged on the delivery pipe 125 of water container 123.
2, heating furnace device
This is the device that graphite roller cover sample is heated in different oxidizing atmospheres, and it comprises:
Heating furnace 21, adopts the adjustable electric furnace of programming rate, and its maximum heating temperature is 1400 DEG C;
Platinum filament 22, is hung in the body of heater of heating furnace 21, and for hanging graphite roller cover sample 5, the object of platinum filament hanging sample, is for ensureing that six faces of sample can be subject to equivalent heating and oxidation, guarantee the accuracy of test figure.
3, gas pipe line and measuring apparatus.
This is that the oxide isolation that oxide isolation generator is provided is quantitatively transported to the device in heating furnace 21, is placed between oxide isolation generator and heating furnace device, and it comprises:
Flow regulator 31, it is a kind of regulating device that regulates and indicate gas flow, realize and being transported in heating furnace stable oxide isolation, and the object of metering, its input end connects the described output channel 13 containing oxygen device 12, the oxide isolation that input oxide isolation generator provides, carries out flow regulation and quantitatively instruction to it;
The first gas pipe line 32, is placed between flow regulator 31 and heating furnace 21, and its one end is communicated with the output terminal of flow regulator 31;
The second gas pipe line 33, is quartz ampoule, is placed in heating furnace 21, and its one end is stretched out outside heating furnace 21 and is connected with the other end of the first gas pipe line 32, and its other end leads to the body of heater of heating furnace 21.
4, meausring apparatus
For to graphite roller cover sample 5 mass change before and after oxidation measure, in order to evaluate needs, generally can select the precision of per mille gram, this device is existing product, not shown.
When experiment, graphite roller cover sample is carried out, after original weighing record, putting on the platinum filament of heating furnace, carry out the high-temperature oxidation resistant experiment in different oxide isolation environment according to Standard test programme.
After oxidation finishes, again graphite roller cover sample is weighed to record, the weight-loss ratio that records sample is the antioxygenic property of this sample.
Introduce the embodiment of experiment below:
The anti-oxidant test findings of certain graphite roller cover sample
Above-mentioned anti-oxidant test is to carry out in 20% residual oxygen and two kinds of environment of wet atmosphere, according to the comparison (weight-loss ratio is higher, and interpret sample antioxygenic property is poorer) of weight-loss ratio after heating, and the evaluation of test findings:
It is the poorest that the inoxidizability of sample A shows as relatively, and sample D shows optimum relatively.
Those of ordinary skill in the art will be appreciated that, above embodiment is only for object of the present invention is described, and not as limitation of the invention, as long as in essential scope of the present invention, variation, modification to the above embodiment all will drop in the scope of claim of the present invention.
Claims (6)
1. detect the device that graphite roller is enclosed within high temperature oxidation resistance in different atmosphere, it is characterized in that comprising:
Oxide isolation generator, is to provide the device of oxide isolation, the well-oxygenated environment of this oxide isolation when detecting, and it comprises:
Nitrogen cylinder (11), in-built nitrogen, its outlet is provided with nitrogen feeding pipe (111);
Containing oxygen device (12), be to provide the equipment of oxygen-containing medium, its input port is communicated with described nitrogen feeding pipe (111), and delivery outlet is provided with output channel (13), the oxide isolation generating after output nitrogen and oxygen-containing medium are synthetic;
Heating furnace device, is the device that graphite roller cover sample is heated in different oxidizing atmospheres, and it comprises:
Heating furnace (21);
Platinum filament (22), is hung in the body of heater of heating furnace (21), and graphite roller cover sample (5) is hung on this platinum filament (22);
Gas pipe line and measuring apparatus, be that oxide isolation is quantitatively transported to the device in heating furnace (21), is placed between oxide isolation generator and heating furnace device, and it comprises:
Flow regulator (31), is a kind of regulating device that regulates and indicate gas flow, and its input end connects described output channel (13), and input oxide isolation carries out flow regulation and quantitatively instruction to it;
The first gas pipe line (32), is placed between flow regulator (31) and heating furnace (21), and its one end is communicated with the output terminal of flow regulator (31);
The second gas pipe line (33), is quartz ampoule, is placed in heating furnace (21), and its one end is stretched out outside heating furnace (21) and is connected with the other end of the first gas pipe line (32), and its other end leads to the body of heater of heating furnace (21);
Meausring apparatus is the device that the quality before and after oxidation is measured to graphite roller cover sample (5).
2. detection graphite roller as claimed in claim 1 is enclosed within the device of high temperature oxidation resistance in different atmosphere, it is characterized in that:
The described oxygen device (12) that contains comprises:
Fan blower (121), is provided with wind conveying pipe (1211);
Ratio adjusting valve (122), it has two entrances and a delivery outlet, an one entrance is communicated with described wind conveying pipe (1211), the oxygen-containing medium of input is air, its another entrance is the input port containing oxygen device (12), be communicated with described nitrogen feeding pipe (111), input nitrogen, in ratio adjusting valve (122), nitrogen and air are synthetic, generation has residual oxygen content oxide isolation, the delivery outlet of ratio adjusting valve (122) is provided with output channel (13), and output has residual oxygen content oxide isolation, and described residual oxygen content is regulated by ratio adjusting valve (122).
3. detection graphite roller as claimed in claim 1 is enclosed within the device of high temperature oxidation resistance in different atmosphere, it is characterized in that:
The described oxygen device (12) that contains comprises:
Water container (123), be inside filled with water (124), it is provided with top cover (1231) sealing, and the oxygen-containing medium providing is water;
Delivery pipe (125), inside and outside described top cover (1231) connection container, its one end is communicated with nitrogen feeding pipe (111), and the other end stretches to the bottom in water container (123);
Output channel (13), inside and outside described top cover (1231) connection container, its one end is led on the interior water liquid level of container, what interior the nitrogen of other end output water container (123) became generation afterwards with hydration has a moisture oxide isolation, and described moisture is regulated by the height of water liquid level (1241) in water container.
4. detection graphite roller as claimed in claim 1 is enclosed within the device of high temperature oxidation resistance in different atmosphere, it is characterized in that:
Described the first gas pipe line (32) is flexible pipe.
5. detection graphite roller as claimed in claim 1 is enclosed within the device of high temperature oxidation resistance in different atmosphere, it is characterized in that:
Described meausring apparatus adopts the device of per mille gram precision.
6. detection graphite roller as claimed in claim 1 is enclosed within the device of high temperature oxidation resistance in different atmosphere, it is characterized in that:
Described heating furnace (21) adopts the adjustable electric furnace of programming rate, and its maximum heating temperature is 1400 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310193659.9A CN104181067A (en) | 2013-05-22 | 2013-05-22 | Device for detecting high temperature oxidation resistance of graphite roller sleeve in different atmospheres |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310193659.9A CN104181067A (en) | 2013-05-22 | 2013-05-22 | Device for detecting high temperature oxidation resistance of graphite roller sleeve in different atmospheres |
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| CN104181067A true CN104181067A (en) | 2014-12-03 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000129404A (en) * | 1998-10-29 | 2000-05-09 | Sumitomo Metal Ind Ltd | Heat resistant alloy steel excellent in oxidation resistance and seizing resistance and heating furnace member |
| FR2850460A1 (en) * | 2003-01-23 | 2004-07-30 | Toulouse Inst Nat Polytech | Method for testing materials by thermogravimetry, comprises heating and cooling samples in presence of controlled atmosphere and weighing them during the cycles with high precision integral balances |
| CN102937581A (en) * | 2012-11-08 | 2013-02-20 | 中国人民解放军空军勤务学院 | Method for rapid assessing high-temperature oxidation resistance of lubricating grease |
-
2013
- 2013-05-22 CN CN201310193659.9A patent/CN104181067A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000129404A (en) * | 1998-10-29 | 2000-05-09 | Sumitomo Metal Ind Ltd | Heat resistant alloy steel excellent in oxidation resistance and seizing resistance and heating furnace member |
| FR2850460A1 (en) * | 2003-01-23 | 2004-07-30 | Toulouse Inst Nat Polytech | Method for testing materials by thermogravimetry, comprises heating and cooling samples in presence of controlled atmosphere and weighing them during the cycles with high precision integral balances |
| CN102937581A (en) * | 2012-11-08 | 2013-02-20 | 中国人民解放军空军勤务学院 | Method for rapid assessing high-temperature oxidation resistance of lubricating grease |
Non-Patent Citations (2)
| Title |
|---|
| CHEN HU-KUI ET AL.: ""Oxidation behaviour of molten ZK60 and ME20 magnesium alloys with magnesium in 1,1,1,2-tetrafluoroethane/air atmospheres"", 《TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA》, vol. 22, 31 December 2012 (2012-12-31) * |
| 冷文波 等: ""可伐合金在模拟现场N2/H2O二元气氛下的氧化行为"", 《北京科技大学学报》, vol. 28, no. 12, 31 December 2006 (2006-12-31) * |
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Application publication date: 20141203 |
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