CN201034923Y - High-temperature abrasive grain abrasion testing device - Google Patents
High-temperature abrasive grain abrasion testing device Download PDFInfo
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- CN201034923Y CN201034923Y CNU2007201490959U CN200720149095U CN201034923Y CN 201034923 Y CN201034923 Y CN 201034923Y CN U2007201490959 U CNU2007201490959 U CN U2007201490959U CN 200720149095 U CN200720149095 U CN 200720149095U CN 201034923 Y CN201034923 Y CN 201034923Y
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- 238000012360 testing method Methods 0.000 title abstract description 32
- 238000005299 abrasion Methods 0.000 title abstract description 9
- 239000006061 abrasive grain Substances 0.000 title abstract 3
- 238000000227 grinding Methods 0.000 claims abstract description 26
- 239000003638 chemical reducing agent Substances 0.000 claims abstract 2
- 230000009467 reduction Effects 0.000 claims description 19
- 239000002245 particle Substances 0.000 claims description 16
- 238000009413 insulation Methods 0.000 claims description 15
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052593 corundum Inorganic materials 0.000 claims description 3
- 239000010431 corundum Substances 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 230000003628 erosive effect Effects 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000003028 elevating effect Effects 0.000 abstract 3
- 239000000523 sample Substances 0.000 description 39
- 239000011248 coating agent Substances 0.000 description 19
- 238000000576 coating method Methods 0.000 description 19
- 101100298225 Caenorhabditis elegans pot-2 gene Proteins 0.000 description 18
- 229910000831 Steel Inorganic materials 0.000 description 14
- 239000010959 steel Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 13
- 239000007921 spray Substances 0.000 description 8
- 238000005260 corrosion Methods 0.000 description 7
- 238000005507 spraying Methods 0.000 description 7
- 238000005259 measurement Methods 0.000 description 6
- 238000007789 sealing Methods 0.000 description 5
- 238000005422 blasting Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 238000000137 annealing Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000011362 coarse particle Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000034994 death Effects 0.000 description 1
- 231100000517 death Toxicity 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000001073 sample cooling Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
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Abstract
The utility model relates to a high temperature abrasive grain abrasion test device, belonging to the material abrasion, erosion and protection technology field. The device mainly comprises a resistance furnace (1) and a lifting column (6). The upper side of the lifting column (6) is fixedly connected through a beam (8); an elevating platform (13) is arranged between the beam (8) and the resistance furnace (1); a motor and a reducer (11) are fixed on the elevating platform (13); a lifting cranking bar (10) is arranged at the upper side of the beam (8); a lead screw (9) is arranged at the inferior part of the lifting cranking bar (10), which is connected with the elevating platform (13). The resistance furnace (1) is provided with a grinding tank (2) in the hearth; and the grinding tank (2) is provided with spherical samples (3) and sand-ground (16); a load block (4) is placed on the spherical samples (3). The utility model is capable of changing the test temperature, stress and time of the abrasion of the abrasive grain optionally, and is simple in operation, practical, accurate in measured data and good in repeatability.
Description
Technical field
The utility model relates to a kind of high temperature abrasive particle wear-out detecting device, utilizes the coefficient principle of abrasive wear and high-temperature oxydation to measure the performance of the high temperature resistant abrasion of coating, belongs to fret wear, corrosion and guard technology field.
Background technology
The abrasion of material is the field of people's primary study with protection all the time.At industrial circles such as metallurgy, electric power, mine, building materials and chemical industry, because the wearing and tearing and the corrosion of material, all can cause huge waste and loss every year, even can cause the breaking-up of equipment and personnel's injures and deaths.Therefore, improve the problem that the wear-corrosion resistance of material is very paid close attention to and is badly in need of solving with regard to becoming people.
The method that improves the material wear-resistant erosion is a lot, and the coating that wherein adopts plasma spray technology to prepare one deck erosion resistant at part or surface of the work is to adopt maximum, most economical at present and one of effective method.Getting well with bad of hot spray coating wear-corrosion resistance directly has influence on the serviceable life of part or workpiece.The raising of coating wear-corrosion resistance and the research and development of novel hot spray coating all need better, more practical means of testing and method.
At present, be seen in both at home and abroad also have in high temperature abrasive particle wear-out (the comprising high temperature erosion) method of report multiple, but for the test of the high temperature of hot spray coating abrasion performance, using more at present is GW/CS-MS type high temperature erosion test method.The high temperature erosion test method is with pressurized air frosted to be brought in the resistance furnace, utilize frosted that specimen surface to be measured is impacted, be subjected to weightlessness after the erosion to estimate a kind of method of coating wear-corrosion resistance by measuring test specimen, the device of its application as shown in Figure 1.But this method has the following disadvantages: 1) test specimen is a rectangular parallelepiped, and it is the test surfaces that is sprayed with coating that a surface is only arranged in six surfaces, and other surface can produce weightening finish because of high-temperature oxydation, and precision of test result is caused bigger influence; 2) in order to reduce the error of measurement, this method will be carried out the alitizing processing to six surfaces of rectangular parallelepiped sample before test, so the preparation more complicated of sample; 3) the resistance furnace volume is little, enter the not outlet of frosted of resistance furnace, so Measuring Time is too short, only has 15 minutes, and this not only has bigger difference with the abrasion operating mode of reality, also influences the accuracy of measurement result; 4) accuracy of measurement result also depends on the flow and the flow velocity of impact specimen frosted, and yet there are certain problem in the flow of this method frosted and the stability of flow velocity; 5) scattering of the frosted generation of test high speed motion also can produce with the non-test surfaces of rectangular parallelepiped sample and collide, and this brings influence also can for the accuracy of measurement result.Therefore, research and development is more suitable for hot spray coating practical application operating mode, can be more accurate, more scientific measurement and new type high temperature abrasive particle wear-out detecting device and the method for estimating coating performance are necessary.
The utility model content
The purpose of this utility model is in order to solve the test and the evaluation problem of hot spray coating (comprising other coating) abrasive wear resistance performance under hot conditions, to put for the high-temperature wearable erosion performance of testing and estimate hot spray coating provides the novel trial assembly of survey.
For achieving the above object, the utility model by the following technical solutions.This device mainly includes the resistance furnace 1 that is connected with controllable silicon temperature controller 17 and two lifting columns 6 that are fixed on the resistance furnace 1.Wherein, the top of two lifting columns 6 is fixedly connected by crossbeam 8, be provided with a hoistable platform 13 that can move up and down along two lifting columns 6 between crossbeam 8 and the resistance furnace 1, be fixed with motor and speed reduction unit 11 on the hoistable platform 13, speed reduction unit 11 output shafts are downward, and are connected with rotation stiring poking fork 12 by shaft coupling 7.There is a lifting rocking handle 10 crossbeam 8 tops, and there is a leading screw 9 lifting rocking handle 10 belows, and leading screw 9 is connected with hoistable platform 13.Be provided with grinding pot 2 in the burner hearth of resistance furnace 1, grinding pot 2 tops are provided with insulation cover 14, and thermopair 15 and rotation stiring poking fork 12 pass insulation cover 14 and stretch in the grinding pot 2.Be placed with spherical sample 3 and frosted 16 in the grinding pot 2, be placed with load piece 4 above spherical sample 3, the center pit of load piece 4 is enclosed within on the axle of rotation stiring poking fork 12, leaves the gap between the inwall of load piece 4 and grinding pot 2.
The quantity of described load fast 4 is more than or equal to 1.During test, the load of abrasive wear can be formed by stacking by a plurality of load pieces 4 of equal quality, the center pit of load piece 4 is enclosed within on the axle of rotation stiring poking fork 12, load piece 4 is placed on the top of spherical sample 3, the size that the quality of change load piece 4 can be regulated frosted and spherical test specimen 3 surface interaction stress.
High rigidity, coarse particle, resistant to elevated temperatures brown corundum frosted or silit frosted are adopted in described frosted 16.
Utilize this device to test, the concrete operations step is as follows:
1) rotation and lifting rocking handle 10 at first is raised to the top of system with motor and speed reduction unit 11, and grinding pot 2 is put in frosted 16, covers insulation cover 14, opens the control power supply of resistance furnace 1 then, by controller 17 resistance furnace 1 is heated to the probe temperature of being scheduled to;
2) treat that resistance furnace 1 is raised to the temperature of being scheduled to after, open burner hearth, spherical sample 3 is put into grinding pot 2;
3) will rotate stiring poking fork 12 and put into grinding pot 2, and load piece 4 is placed the top of spherical sample 3, insulation cover 14 then closes;
4) the rotation and lifting rocking handle 10, and motor and speed reduction unit 11 are moved downward, and by shaft coupling 7 speed reduction unit are connected with rotation stiring poking fork 12;
5) continue to give resistance furnace 1 heating, treat to connect motor power after resistance furnace 1 temperature is raised to institute's predetermined temperature, rotation stiring poking fork 12 rotates, and picks up counting;
6) after the time that the arrival test sets, close resistance furnace 1 power supply and motor 11 power supplys, unclamp the shaft joint of rotation stiring poking fork 12 and speed reduction unit, rotation and lifting rocking handle 10 rises to the system the top with motor and speed reduction unit 11, open insulation cover 14, take out rotation stiring poking fork 12 and load piece 4 earlier, take out spherical sample 3 then and in air, cool off, treat after the furnace temperature cooling frosted in the grinding pot 2 to be taken out, close resistance furnace insulation cover 14;
7) treat 3 coolings of spherical sample after, remove its surperficial impurity, weighing sample mass and measure the diameter of sample carries out the calculating of wear extent then then.
1) adopts bearing steel ball as matrix material, bearing steel ball is carried out annealing in process;
2) to bearing steel round bur one hole, blasting treatment is carried out on the bearing steel ball surface, one end of bolt of long stem 19 is fixedlyed connected with the hole on the bearing steel ball, the other end is connected with the axle of second motor and speed reduction unit 18, bearing steel ball can rotate under the support of bolt of long stem 19, and the steel ball surface after the blasting treatment is carried out thermal spray;
3) with bolt sealing of hole is carried out in the hole of spherical sample 3 then, and sealing of hole place surface coating is filled spray, spherical sample 3 is finished in preparation at last.
The ultimate principle of high temperature abrasive particle wear-out method of testing: the surface is covered with the spherical sample of coating, under the condition of high-temperature oxydation atmosphere and compressive stress, hard particles is rolled, utilize cutting, bump and the rubbing action of hard particles to the test specimen surface, make surfacing cause abrasion, estimate the wear-corrosion resistance of coating by the weight loss of calculation testing piece surface unit area, as shown in Figure 6.
Advantage of the present utility model is: test sample is the surperficial spherical sample that is covered with coating, can change probe temperature, stress and the time of abrasive wear in the test arbitrarily; Operation of equipment is simple, practical; Test data is accurate, good reproducibility.The utility model is fit to the high temperature abrasive particle wear-out test of various hot spray coatings and other kinds coating, also can carry out the evaluation of abrasive wear resistance performance to various types of materials (spherical sample).
Description of drawings
Fig. 1 is a GW/CS-MS high temperature erosion proving installation synoptic diagram
Fig. 2 is the synoptic diagram that is covered with the spherical sample of coating
Fig. 3 is spherical sample machining structural representation
Fig. 4 is a ball-type style thermal spray process synoptic diagram
Fig. 5 is the synoptic diagram of high temperature abrasive particle wear-out detecting device
Fig. 6 is the high temperature abrasive particle wear-out test philosophy
Among the figure: 1, resistance furnace, 2, grinding pot, 3, spherical sample, 4, load piece, 5, slip cap, 6, lifting column, 7, shaft coupling, 8, crossbeam, 9, leading screw, 10, lifting rocking handle, 11, motor and speed reduction unit, 12, the rotation stiring poking fork, 13, hoistable platform, 14, insulation cover, 15, thermopair, 16, frosted, 17, controller; 18, second motor and speed reduction unit, 19, bolt of long stem, 20, coating, 21, paint spray gun, 22, base material, 23, the sealing of hole bolt, 24, sand amount adjuster bar, 25, sand hopper, 26, sand-feeding tube, 27, second resistance furnace, 28, sand gas mixing chamber, 29, gas outlet, 30, rectangular parallelepiped sample, 31, the carrier gas economizer bank, 32,33, second thermopair, 34, jet pipe.
Embodiment
Describe embodiment of the present utility model in detail below in conjunction with Fig. 2～Fig. 5.
Present embodiment mainly includes resistance furnace 1, and resistance furnace 1 is connected with controllable silicon temperature controller 17.The top that is fixed with 6, two lifting columns 6 of two lifting columns on the resistance furnace 1 is connected and fixed by a crossbeam 8.Be provided with hoistable platform 13 between crossbeam 8 and the resistance furnace 1, hoistable platform 13 is connected with lifting column 6 by slip cap 5, can move up and down along two lifting columns 6.Be fixed with motor and speed reduction unit 11 on the hoistable platform 13, speed reduction unit 11 output shafts are downward, and are connected with rotation stiring poking fork 12 by shaft coupling 7.There is a lifting rocking handle 10 crossbeam 8 tops, and there is a leading screw 9 lifting rocking handle 10 belows, and leading screw 9 is connected with hoistable platform 13.Be provided with grinding pot 2 in the burner hearth of resistance furnace 1, grinding pot 2 tops are provided with insulation cover 14, and thermopair 15 and rotation stiring poking fork 12 pass insulation cover 14 and stretch in the grinding pot 2.Be placed with spherical sample 3 and frosted 16 in the grinding pot 2, be provided with load piece 4 above spherical sample 3, the center pit of load piece 4 is enclosed within on the axle of rotation stiring poking fork 12, leaves the gap of 5mm between the inwall of load piece 4 and grinding pot 2.Above spherical sample 3, be placed with two load pieces 4 in the present embodiment.High rigidity, coarse particle, resistant to elevated temperatures brown corundum frosted or silit frosted are adopted in frosted 16.
These high temperature abrasive particle wear-out detecting device performance index:
1) probe temperature: room temperature～1100 ℃.
2) the longest test duration of single: 5 hours.
3) pressure load: 0～20N/ sample.
4) specimen size: radius R=12.5mm.
Being prepared as follows of spherical sample:
1) the G15 bearing steel ball is carried out the annealing in process of 700 ℃ * 1h;
2) to the hole of bearing steel round bur one M4, as shown in Figure 3;
3) blasting treatment is carried out on the bearing steel ball surface;
4) end of bolt of long stem 19 is fixedlyed connected with the hole on the bearing steel ball, the other end is connected with the axle of second motor and speed reduction unit 18, and bearing steel ball can rotate under the support of bolt of long stem 19;
5) steel ball surface after the blasting treatment is carried out the thermal spray (see figure 4);
6) with the M4 bolt spherical sample is carried out sealing of hole, and sealing of hole place surface coating is filled spray;
7) quality and the surface area of steel ball after the measurement thermal spray.
High temperature abrasive particle wear-out test process in the present embodiment is as follows:
1) rotation and lifting rocking handle 10 at first is raised to the top of system with motor and speed reduction unit 11, and grinding pot 2 is put in frosted 16, covers insulation cover 14, opens the power supply of resistance furnace controller 17 then, by controller 17 resistance furnace 1 is heated to the temperature of being scheduled to;
2) treat that resistance furnace 1 is raised to the temperature of being scheduled to after, open burner hearth, three spherical samples 3 are put into grinding pot 2;
3) will rotate shift fork 12 and put into grinding pot 2, and load piece 4 is placed on the spherical sample 3, insulation cover 14 then closes;
4) the rotation and lifting rocking handle 10, and motor and speed reduction unit 11 are moved downward, and by shaft coupling 7 speed reduction unit are connected with rotation stiring poking fork 12;
5) continue to give resistance furnace 1 heating, treat to connect motor power after resistance furnace 1 temperature is raised to institute's predetermined temperature, rotation stiring poking fork 12 rotates high temperature abrasive particle wear-out on-test and timing;
6) after the time that the arrival test sets, close resistance furnace power supply and motor power, unclamp the shaft coupling 7 of rotation shift fork 12 and speed reduction unit, rotation and lifting rocking handle 10 rises to the system the top with motor and speed reduction unit, open insulation cover 14, take out rotation shift fork 12 and load piece 4 earlier, take out spherical sample 3 then and in air, cool off, treat after the furnace temperature cooling frosted in the grinding pot 2 to be taken out, close resistance furnace insulation cover 14.
7) treat sample cooling after, remove its surperficial impurity, then weighing sample mass and measure the diameter of sample.
8) processing of test result
Measure the weight and the surface area of style wear test front and back, calculate the wear extent of coating.Computing formula is as follows:
In the following formula: w is the unit area wear extent; m
1Original quality for the spherical sample that is covered with coating; m
2Be the quality after the spherical sample wear test that is covered with coating; S is the surface area that is covered with the spherical sample of coating.
Claims (3)
1. high temperature abrasive particle wear-out detecting device is characterized in that: mainly include the resistance furnace (1) that is connected with controllable silicon temperature controller (17) and be fixed on two lifting columns (6) on the resistance furnace (1); Wherein, the top of two lifting columns (6) is fixedly connected by crossbeam (8), be provided with the hoistable platform (13) that can move up and down along two lifting columns (6) between crossbeam (8) and the resistance furnace (1), be fixed with motor and speed reduction unit (11) on the hoistable platform (13), reducer output shaft is downward, and is connected with rotation stiring poking fork (12) by shaft coupling (7); Crossbeam (8) top is provided with a lifting rocking handle (10), and there is a leading screw (9) lifting rocking handle (10) below, and leading screw (9) is connected with hoistable platform (13); Be provided with grinding pot (2) in the burner hearth of resistance furnace (1), the upper end of grinding pot (2) is provided with insulation cover (14), and thermopair (15) and rotation stiring poking fork (12) pass insulation cover (14) and stretch in the grinding pot (2); Be placed with spherical sample (3) and frosted (16) in the grinding pot (2), be placed with load piece (4) in the top of spherical sample (3), the center pit of load piece (4) is enclosed within on the axle of rotation stiring poking fork (12), leaves the gap between the inwall of load piece (4) and grinding pot (2).
2. a kind of high temperature abrasive particle wear-out detecting device according to claim 1 is characterized in that: the quantity of described load piece (4) is more than or equal to 1.
3. a kind of high temperature abrasive particle wear-out detecting device according to claim 1 is characterized in that: described frosted (16) is brown corundum frosted or silit frosted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201490959U CN201034923Y (en) | 2007-05-11 | 2007-05-11 | High-temperature abrasive grain abrasion testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201490959U CN201034923Y (en) | 2007-05-11 | 2007-05-11 | High-temperature abrasive grain abrasion testing device |
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| Publication Number | Publication Date |
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| CN201034923Y true CN201034923Y (en) | 2008-03-12 |
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|---|---|---|---|
| CNU2007201490959U Expired - Lifetime CN201034923Y (en) | 2007-05-11 | 2007-05-11 | High-temperature abrasive grain abrasion testing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107843512A (en) * | 2017-10-27 | 2018-03-27 | 天津建仪机械设备检测有限公司 | The anti-brush experimental rig of ball type |
-
2007
- 2007-05-11 CN CNU2007201490959U patent/CN201034923Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107843512A (en) * | 2017-10-27 | 2018-03-27 | 天津建仪机械设备检测有限公司 | The anti-brush experimental rig of ball type |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20070511 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |