CN103592097A - Experimental method and device for detecting impact resistance of fireproofing material - Google Patents
Experimental method and device for detecting impact resistance of fireproofing material Download PDFInfo
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- CN103592097A CN103592097A CN201310578504.7A CN201310578504A CN103592097A CN 103592097 A CN103592097 A CN 103592097A CN 201310578504 A CN201310578504 A CN 201310578504A CN 103592097 A CN103592097 A CN 103592097A
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- fireproofing material
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Abstract
The invention discloses an experimental method and device for detecting impact resistance of a fireproofing material. The fireproofing material to be detected is made into a strip-shaped sample with the standard specification at first, a stainless steel ball with certain weight is used for smashing and striking the middle surface of the sample many times, the frequent stress impact stressed by the fireproofing material in the process of using is simulated, and the high or low of the impact resistance of the fireproofing material is represented by comparing breaking strength retaining rates before and after the sample is shocked, wherein if the breaking strength retaining rates are closer to 1, the impact resistance of fireproofing material is better. According to the experimental method and device, the principle is simple, operation is easy and convenient, an existing fireproofing material detecting means serves as a main means, and therefore the universality is higher, the vacancy that the damage behaviors happening when the fireproofing material is frequently impacted cannot be quantitatively represent easily at present is filled up, and the experimental method and device are good supplements for representing the using behaviors and the performance optimization of the fireproofing material.
Description
Technical field
The present invention relates to the sign of capabilities of refractory materials, specifically a kind of experimental technique and device that detects fire resistive material impact resistance.
Background technology
With Metal Phase ratio, the Inorganic Non-metallic Materials under fire resistive material, mostly is hard brittle material, and sudden brittle fracture and destruction in use easily occur.Fire resistive material worker often toughness reinforcing by grain composition, complex phase, in matrix, introduce the methods such as micro-pore and improve toughness and and then change the performance of fire resistive material when damage.These performance optimization approach need to be evaluated its effect by some experimental techniques.Existing capabilities of refractory materials evaluation method related to this mainly contains the thermal shock resistance detection method that characterizes fire resistive material and be subject to thermal stress damage, the split the law that characterizes fire resistive material propagation of internal cracks difficulty or ease, the former simulates fire resistive material and in use stands temperature and sharply change the destruction of bringing, and the method is comparatively conventional; The latter can characterize to quantification the difficulty or ease of fire resistive material propagation of internal cracks, but pick-up unit is less at present, and has the protection of Patents power abroad.
Fire resistive material all can be subject to the impact of mechanical stress or thermal stress in producing, pack, transport, build by laying bricks or stones and using, these impact deficiency so that the disposable destruction of fire resistive material, but can bring structural " internal injury " to fire resistive material, be accumulate to a certain degree and will cause the significantly generation of damage.To the sign of fire resistive material impact resistance, also can relatively embody the quality of toughness of material.But, at present in test of refractories method, also there is no quantitatively to detect the experimental technique of fire resistive material impact resistance.
Summary of the invention
For solving due to the problem that there is no at present the experimental technique of quantitative detection fire resistive material impact resistance and be difficult to simulate the structural failure situation of fire resistive material while standing frequent mechanical stress or Thermal Stress, the invention provides a kind of experimental technique and device that detects fire resistive material impact resistance.
The present invention solves the problems of the technologies described above the technical scheme of employing to be: a kind of experimental technique that detects fire resistive material impact resistance, comprises the following steps:
1) fire resistive material to be measured is made to some bar-shaped sample that specification is identical, detected the strength at normal temperature CMOR of this fire resistive material
1, need at least detect 3 samples, averaged;
2) get again one group of bar-shaped sample and its level is fixed on a levels operation platform, above sample, certain predetermined height arranges the stainless steel ball that sphere diameter and weight are all consistent, and make stainless steel ball do the movement of falling object under Action of Gravity Field, pound the central region in bar-shaped sample;
3) after blasting operation N time of repeating step (2), the rupture strength CMOR of sample after detecting this and being hit
2, need at least detect three samples, averaged;
4) calculate CMOR
2and CMOR
1ratio and be labeled as rupture strength conservation rate S, that is:
, using parameter S as the index of evaluating this fire resistive material impact resistance, the numerical value of S, more close to 1, shows that the impact resistance of this fire resistive material is better;
The device of using in the experimental technique of detection fire resistive material impact resistance as above, comprise steel ball flat pad, steel ball flat pad regulates its height by height regulating rod, under steel ball flat pad, be provided with for placing and the fixing testing table of bar-shaped sample, described steel ball flat pad is the pertusate platy structure of middle part tool, steel ball can pass through this hole free-falling, on the upper surface of steel ball flat pad, be provided with two parallel chutes, in chute, slide and be arranged with two steel ball size adjustable plates, thereby two relative sides of steel ball size adjustable plate all have the concave face formation steel ball whereabouts passage of arc, the bottom of steel ball whereabouts passage is provided with baffle plate, this baffle plate is rotationally connected by a rotating pin and steel ball flat pad.
In the present invention, can be according to the selected weight of steel ball of the sample of unlike material and the number of times of elemental height and impact, but in same group of experiment, need to keep multiplicity, steel ball weight, elemental height and pound to hit invariant position to reduce systematic error, improve the gained impact resistance accuracy of quality relatively.
Beneficial effect: the present invention by with steel ball from the drop instant impact that produces and repeatedly impact frequent mechanical stress that simulating reality environment as far as possible, fire resistive material is subject to or the impact of thermal stress of eminence, then by rupture strength calculating strength conservation rate before measuring sample and being hit and after impacting, carry out the relative fine or not of quantitatively characterizing fire resistive material impact resistance.Under condition, this rupture strength conservation rate S more approaches 1, shows that the impact resistance of fire resistive material is better.This method principle is simple, easy and simple to handle, take existing test of refractories equipment as main, so universality is stronger, filled up the blank that is difficult at present the damage behavior of quantitatively characterizing fire resistive material while standing frequent impact, fire resistive material usage behavior has been characterized and performance optimization is well supplementary.
Accompanying drawing explanation
Fig. 1 is the structural representation of pick-up unit of the present invention;
Fig. 2 is the structural representation of steel ball flat pad in pick-up unit;
Reference numeral: 1, testing table, 2, sample, 3, steel ball flat pad, 301, steel ball size adjustable plate, 302, steel ball whereabouts passage, 303, chute, 304, baffle plate, 4, height regulating rod.
Embodiment
An experimental technique that detects fire resistive material impact resistance, comprises the following steps:
1) fire resistive material to be measured is made to some bar-shaped sample that specification is identical, detected the strength at normal temperature CMOR of this fire resistive material
1, need at least detect 3 samples, averaged;
2) get again one group of bar-shaped sample and its level is fixed on a levels operation platform, above sample, certain predetermined height arranges the stainless steel ball that sphere diameter and weight are all consistent, and make stainless steel ball do the movement of falling object under Action of Gravity Field, pound the central region in bar-shaped sample;
3) after blasting operation N time of repeating step (2), the rupture strength CMOR of sample after detecting this and being hit
2, need at least detect three samples, averaged;
4) calculate CMOR
2and CMOR
1ratio and be labeled as rupture strength conservation rate S, that is:
, using parameter S as the index of evaluating this fire resistive material impact resistance, the numerical value of S, more close to 1, shows that the impact resistance of this fire resistive material is better.
Above-mentioned detection method a kind of fire resistive material impact resistance pick-up unit used, as illustrated in fig. 1 and 2, comprise steel ball flat pad 3, steel ball flat pad 3 regulates its height by height regulating rod 4, under steel ball flat pad 3, be provided with for placing and the fixing testing table 1 of sample 2, described steel ball flat pad 3 is the pertusate platy structure of middle part tool, steel ball can pass through this hole free-falling, on the upper surface of steel ball flat pad 3, be provided with two parallel chutes 303, the interior slip of chute 303 is arranged with two steel ball size adjustable plates 301, thereby two relative sides of steel ball size adjustable plate 301 all have the concave face formation steel ball whereabouts passage 302 of arc, the bottom of steel ball whereabouts passage 302 is provided with baffle plate 304, this baffle plate 304 by a rotating pin with state steel ball flat pad 3 and be rotationally connected.
Described height regulating rod 4 has the function of telescopic adjustment height, and its structure is the tube-like piece of two-section ring set and realizes inner tube and expose the fixing of outer length of tube by holding out against nut.
Thereby handle can be set on described baffle plate 304 and to facilitate to rotate, open and close steel ball whereabouts passage 302.
While utilizing experimental provision of the present invention to carry out impact resistance mensuration to fire resistive material, first this fire resistive material made to sample 2 and be fixed on testing table 1, the surface of the surface of testing table 1 and sample 2 is level gapless fitting together all.By height regulating rod 4, adjust the level height of steel ball flat pad 3, thereby and make two steel ball size adjustable plates 301 regulate the size of steel ball whereabouts passage 302 to hold the steel ball of different-diameter in the interior slip of chute 303, can certainly be that a slice steel ball size adjustable plate 301 is fixing, another sheet is in the interior slip of chute 303, can more easily determine to pound like this and hit a little, then steel ball is placed in steel ball whereabouts passage 302, opens the rear steel ball of baffle plate 304 and do freely falling body and pound the surface of hitting sample 2; Repeat above operation several times.
Claims (2)
1. an experimental technique that detects fire resistive material impact resistance, is characterized in that, comprises the following steps:
(1) fire resistive material to be measured is made to some bar-shaped sample that specification is identical, detected the strength at normal temperature CMOR of this fire resistive material
1, need at least detect 3 samples, averaged;
(2) get again one group of bar-shaped sample and its level is fixed on a levels operation platform, above sample, certain predetermined height arranges the stainless steel ball that sphere diameter and weight are all consistent, and make stainless steel ball do the movement of falling object under Action of Gravity Field, pound the central region in bar-shaped sample;
(3) after blasting operation N time of repeating step (2), the rupture strength CMOR of sample after detecting this and being hit
2, need at least detect three samples, averaged;
(4) calculate CMOR
2and CMOR
1ratio and be labeled as rupture strength conservation rate S, that is:
, using parameter S as the index of evaluating this fire resistive material impact resistance, the numerical value of S, more close to 1, shows that the impact resistance of this fire resistive material is better.
2. a kind of device of using in the experimental technique of fire resistive material impact resistance that detects as claimed in claim 1, it is characterized in that: comprise steel ball flat pad (3), steel ball flat pad (3) regulates its height by height regulating rod (4), under steel ball flat pad (3), be provided with for placing and the fixing testing table (1) of bar-shaped sample (2), described steel ball flat pad (3) is the pertusate platy structure of middle part tool, steel ball can pass through this hole free-falling, on the upper surface of steel ball flat pad (3), be provided with two parallel chutes (303), in chute (303), slide and be arranged with two steel ball size adjustable plates (301), two steel ball size adjustable plates (301) thus a relative side all has the concave face of arc forms steel ball whereabouts passage (302), the bottom of steel ball whereabouts passage (302) is provided with baffle plate (304), this baffle plate (304) is rotationally connected by a rotating pin and steel ball flat pad (3).
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840571A (en) * | 2017-04-05 | 2017-06-13 | 吕心怡 | A kind of automatic falling sphere experimental provision |
| CN107677559A (en) * | 2017-11-27 | 2018-02-09 | 平顶山市美伊金属制品有限公司 | A kind of detection means for being used to test pot cover strength of glass |
| CN108507746A (en) * | 2018-04-24 | 2018-09-07 | 江苏华复轨道交通科技有限公司 | A kind of motor-car skirtboard strength test device |
| CN109872608A (en) * | 2019-02-28 | 2019-06-11 | 贾博玮 | A kind of high school student's physics facility |
| CN113295558A (en) * | 2021-07-27 | 2021-08-24 | 江苏金圣棋盘玻璃科技发展有限公司 | Automobile front windshield outgoing detection system |
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| CN201047799Y (en) * | 2007-04-19 | 2008-04-16 | 东华大学 | Falling ball impact instrument |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840571A (en) * | 2017-04-05 | 2017-06-13 | 吕心怡 | A kind of automatic falling sphere experimental provision |
| CN107677559A (en) * | 2017-11-27 | 2018-02-09 | 平顶山市美伊金属制品有限公司 | A kind of detection means for being used to test pot cover strength of glass |
| CN108507746A (en) * | 2018-04-24 | 2018-09-07 | 江苏华复轨道交通科技有限公司 | A kind of motor-car skirtboard strength test device |
| CN109872608A (en) * | 2019-02-28 | 2019-06-11 | 贾博玮 | A kind of high school student's physics facility |
| CN113295558A (en) * | 2021-07-27 | 2021-08-24 | 江苏金圣棋盘玻璃科技发展有限公司 | Automobile front windshield outgoing detection system |
| CN113295558B (en) * | 2021-07-27 | 2021-09-17 | 江苏金圣棋盘玻璃科技发展有限公司 | Automobile front windshield outgoing detection system |
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Application publication date: 20140219 |