CN101187612A - Small drill drift creepage test device - Google Patents
Small drill drift creepage test device Download PDFInfo
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- CN101187612A CN101187612A CNA2007101708281A CN200710170828A CN101187612A CN 101187612 A CN101187612 A CN 101187612A CN A2007101708281 A CNA2007101708281 A CN A2007101708281A CN 200710170828 A CN200710170828 A CN 200710170828A CN 101187612 A CN101187612 A CN 101187612A
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Abstract
The invention relates to a micro sample mechanical performance testing device, in particular to a little plunger creeping testing device. The little plunger creeping testing device of the invention comprises a main body device, a temperature controller and an air protective system, wherein the temperature controller is arranged on an electric stove, the main body device is connected in turn with the temperature controller and a power supply through the electric stove, and an air bottle of the air protective system is connected with the main body device through a flow gauge. The main body device comprises an upper module, a lower module and a loading mechanism, wherein the loading mechanism comprises a counterweight, a loading tray and a plunger, wherein the loading tray is an assembly unit which combines an upper round plate and a lower rod-type cylinder, and the lower rod-type cylinder is connected with the plunger. Load can be transmitted on little plunger creeping sample through the plunger, the upper model forms a clearance fit with the rod-type cylinder of the loading tray through a central hole, alignment can be guaranteed, the whole main body part is loaded by the lower module and fixed with the lower module through a fastening screw. The invention can use tiny micro sample to test creeping performance of testing materials without any loss.
Description
Technical field
The present invention relates to material micro-test sample mechanics performance testing technology, particularly a kind of small drill drift creepage test device.
Background technology
Exist the pressure vessel and the pipeline of a large amount of military services in electric power, nuclear power and the petroleum chemical industry, the current performance and the residual life of how to evaluate and these equipment of prediction are the hot subjects of research always.Traditional lossless detection method and routine sampling test method are the main experimental study methods of this respect always, because the both has limitation separately---the former is simple, harmless, but the information that records is imperfect, and defective that can only detection architecture can't obtain the variation of material property; The latter accurately and reliably can the test material performance and the variation of tissue, but destructiveness is arranged.In some material property research,, thereby can't satisfy of the requirement of conventional material performance test in addition to specimen size sometimes because the volume that can materials is too little.In the research of the material damage after neutron irradiation, because nuclear reactor only can provide limited space, the damage field of particle accelerator generation simultaneously is also very narrow, and the size of sample has been subjected to strict restriction like this.In addition, as in the performance variation law research of welding joint heat-affected zone, because this regional extent is very little, the mechanical property that obtains material with conventional method is obviously impossible, therefore must find new microspecimen test method(s) (SmallSpecimen Test is called for short SST), to adopt the method for harmless or half nondestructive test on the one hand as far as possible, must obtain the performance of material on the other hand again to greatest extent, make a service test to adapt to microspecimen.Little jumper bar experimental technique arises under this background just, in the eighties initial stage grow up gradually a kind ofly not only had " harmless sampling " property but also had the novel test method of accurate reliability.
The test that utilizes little jumper bar experimental technique to carry out the material creep performance is a new action, and corresponding testing apparatus and method of testing must be arranged.
Summary of the invention
The present invention is for overcoming above-mentioned prior art point shortcoming, and purpose provides a kind of small drill drift creepage test device, and this device can utilize the croop property of the approximate test material that can't harm of very little micro-test sample.
For achieving the above object, technical scheme of the present invention is:
A kind of small drill drift creepage test device; be characterized in: device is divided into agent set, temperature controller and three parts of gas protection system; described temperature controller is arranged on the electric furnace; described agent set links to each other with temperature controller, power supply successively by electric furnace, and the gas cylinder of described gas protection system links to each other with described agent set by flowmeter.
Said agent set comprises upper die and lower die and load maintainer; This load maintainer comprises counterweight, loads pallet and jumper bar, and described loading pallet is the subassembly of top disk and following bar-shaped cylinder, and this bar-shaped cylinder links to each other with described jumper bar, transfers loads on the small drill drift creepage sample by jumper bar; Described patrix forms clearance fit by the bar-shaped cylinder of center hole and described loading pallet, to guarantee centering; Described counterdie carries all main parts, and is fixed by clamp nut.
Described jumper bar is the corundum material manufacturing.
Described power supply provides 220V voltage.
Described gas cylinder is the argon gas gas cylinder.
Described sample is that to be φ 10 * 0.5mm, thickness error be the small sample of ± 0.02mm to specification.
The depression bar that described load maintainer uses is divided into three sections manufacturings, selects the steel manufacturing for use for the bar-shaped cylinder in the described loading pallet for first section, and the jumper bar of second and third section is the corundum material manufacturing, and second section diameter is greater than the 3rd section diameter.
Described the 3rd section diameter 2.4mm, head are spherical, directly contact with sample.
Compared with prior art, the invention has the beneficial effects as follows:
(1) traditional creep test is loaded as the unilateral stretching formula, and this device loads mode more complicated, similar ram-type loads, but this load mode is in complicated two-way stretch state.Load maintainer comprises counterweight, loads pallet and jumper bar.During loading, counterweight is placed on the loading pallet, its weight is delivered to jumper bar by pallet and is delivered on the sample.Between two pressing molds, can not move freely about little jumper bar sample is fixed on, belong to and prop up the border admittedly, upwards all be stretched at thickness direction and footpath.
(2) conventional creep test is a large dimension specimen, can reduce the susceptibility of fault in material to experiment like this.And this testing of equipment need be got very little sample at the material of labour equipment, is unlikely to like this equipment is damaged.Desired sample is little thin rounded flakes shape (10mm * 0.5mm).
(3) test high-temerature creep sample itself produces distortion, and punch material also may produce distortion, and is inaccurate to the measurement of sample creep properties, selects corundum material to make jumper bar for this reason.
Description of drawings
Fig. 1 is the structural representation of small drill drift creepage test device of the present invention.
Fig. 2 is the structural representation of load maintainer among the present invention.
Fig. 3 is the synoptic diagram of three sections manufacturings of jumper bar among the present invention.
Embodiment
The present invention will be further described below in conjunction with drawings and Examples, but should not limit protection scope of the present invention with this.
See also Fig. 1.Fig. 1 is the structural representation of small drill drift creepage test device of the present invention.This device is divided into agent set 1, temperature controller 2 and three parts of gas protection system as shown in the figure, and described temperature controller 2 is arranged on the electric furnace 3, the temperature of control and maintenance electric furnace 3.Described agent set 1 links to each other with temperature controller 2, power supply 4 successively by electric furnace 3, and the gas cylinder 5 of described gas protection system links to each other with described agent set 1 by flowmeter 10.During test, for preventing sample generation oxidation, logical argon shield.Power supply is a 220V voltage.
See also Fig. 2, Fig. 2 is the structural representation of load maintainer among the present invention.Described agent set 1 comprises patrix 6, counterdie 7 and load maintainer; This load maintainer comprises counterweight, loads pallet 8 and jumper bar 9.Upper and lower mould is used for clamping small drill drift creepage sample, forms the border condition of propping up admittedly.Described loading pallet 8 is the subassembly of top disk and following bar-shaped cylinder, above disk be used to carry counterweight, this bar-shaped cylinder links to each other with described jumper bar 9, transfers loads on the small drill drift creepage sample 12 by jumper bar 9; Described patrix 6 forms clearance fit by the bar-shaped cylinder of center hole and described loading pallet 8, to guarantee centering; Described counterdie 7 carries all main parts, and is fixed by fastening bolt 11.During test, the upwards logical argon shield in position shown in the center line from figure.
The temperature control and the heating system that are equivalent to the traditional standard creep test device are the SG2 series crucible electrical resistance furnaces of being produced by Shanghai experimental electric furnace factory.This electric furnace is furnished with SKW temperature controller and nickel chromium triangle-Nickel-Silicom thermocouple, can measure, indicate fire box temperature and control automatically.The maximum temperature that electric furnace can heat is 1600 ℃, temperature-controlled precision can reach≤and 3 ℃ level.
See also Fig. 3.Fig. 3 is the synoptic diagram of three sections manufacturings of jumper bar among the present invention.Test high-temerature creep sample itself produces distortion, and punch material also may produce distortion, and is inaccurate to the measurement of sample creep properties, selects corundum material to make jumper bar for this reason.Because corundum is highly brittle, for avoiding depression bar fracture in the use, the depression bar that load maintainer uses is divided into three sections manufacturings, first section for loading bar-shaped cylinder (steel) in the pallet, second and third section is the corundum material manufacturing, second section diameter is big slightly, and the 3rd section diameter is less, is unlikely to like this fracture to occur in the corundum material use.The 3rd section diameter 2.4mm, head make the little steel ball 13 of globulate, directly contact with sample.
The specification of the used sample of this testing machine is φ 10 * 0.5mm.Thickness error is ± 0.02mm.
Small drill drift creepage test device of the present invention can utilize the croop property of the approximate test material that can't harm of very little micro-test sample.
The above is preferred embodiment of the present invention only, is not to be used for limiting practical range of the present invention.Be that all equivalences of doing according to the content of the present patent application claim change and modification, all should be technology category of the present invention.
Claims (7)
1. small drill drift creepage test device is characterized in that:
This device is divided into agent set (1), temperature controller (2) and three parts of gas protection system, described temperature controller (2) is arranged on the electric furnace (3), described agent set (1) links to each other with temperature controller (2), power supply (4) successively by electric furnace (3), and the gas cylinder of described gas protection system (5) links to each other with described agent set (1) by flowmeter (10);
Described agent set (1) comprises patrix (6), counterdie (7) and load maintainer; This load maintainer comprises counterweight, loads pallet (8) and jumper bar (9), described loading pallet (8) is the subassembly of top disk and following bar-shaped cylinder, this bar-shaped cylinder links to each other with described jumper bar (9), transfers loads on the small drill drift creepage sample (12) by jumper bar (9); Described patrix (6) forms clearance fit by the bar-shaped cylinder of center hole and described loading pallet (8), to guarantee centering; Described counterdie (7) carries all main parts, and is fixed by clamp nut (11).
2. small drill drift creepage test device according to claim 1 is characterized in that described jumper bar (9) is the corundum material manufacturing.
3. small drill drift creepage test device according to claim 1 is characterized in that described power supply (4) provides 220V voltage.
4. small drill drift creepage test device according to claim 1 is characterized in that described gas cylinder (5) is the argon gas gas cylinder.
5. small drill drift creepage test device according to claim 1 is characterized in that described sample (1) is that to be φ 10 * 0.5mm, thickness error be the small sample of ± 0.02mm to specification.
6. small drill drift creepage test device according to claim 1, it is characterized in that the depression bar that described load maintainer uses is divided into three sections manufacturings, select the steel manufacturing for use for the bar-shaped cylinder in the described loading pallet (8) for first section, the jumper bar of second and third section (9) is the corundum material manufacturing, and second section diameter is greater than the 3rd section diameter.
7. small drill drift creepage test device according to claim 6 is characterized in that described the 3rd section diameter 2.4mm, and head is spherical, directly contacts with sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101708281A CN101187612A (en) | 2007-11-23 | 2007-11-23 | Small drill drift creepage test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101708281A CN101187612A (en) | 2007-11-23 | 2007-11-23 | Small drill drift creepage test device |
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| CN101187612A true CN101187612A (en) | 2008-05-28 |
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| CNA2007101708281A Pending CN101187612A (en) | 2007-11-23 | 2007-11-23 | Small drill drift creepage test device |
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| CN (1) | CN101187612A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893531A (en) * | 2010-07-20 | 2010-11-24 | 中国工程物理研究院总体工程研究所 | High-temperature Hopkinson pressure bar experimental system with atmosphere protection device |
| CN103163023A (en) * | 2013-03-14 | 2013-06-19 | 西南石油大学 | Method and device for testing environmental fracture toughness of petroleum pipe |
| CN104280292A (en) * | 2014-09-19 | 2015-01-14 | 国家电网公司 | Ventilating device for small punch creep test |
| CN104315847A (en) * | 2014-09-19 | 2015-01-28 | 国家电网公司 | High temperature heating furnace for small drill drift creep test |
| CN105466793A (en) * | 2016-01-06 | 2016-04-06 | 辽宁工业大学 | Device for testing plastic deformation capacity of metal glass material |
| CN108225903A (en) * | 2018-03-15 | 2018-06-29 | 国电锅炉压力容器检验中心 | A kind of station boiler small punch test device |
| CN108225902A (en) * | 2018-03-15 | 2018-06-29 | 国电锅炉压力容器检验中心 | A kind of station boiler small punch test device |
| CN108489805A (en) * | 2018-03-19 | 2018-09-04 | 常州大学 | A kind of small drift test fixture under surrounding medium |
| CN108693026A (en) * | 2017-12-22 | 2018-10-23 | 宁波诺丁汉大学 | A kind of small punch test system and its test method based on acoustic emission sensor |
| CN110501217A (en) * | 2019-09-25 | 2019-11-26 | 中南大学 | A kind of creep compression clamp |
| CN110501216A (en) * | 2019-09-25 | 2019-11-26 | 中南大学 | A kind of creep compression clamp component |
-
2007
- 2007-11-23 CN CNA2007101708281A patent/CN101187612A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893531A (en) * | 2010-07-20 | 2010-11-24 | 中国工程物理研究院总体工程研究所 | High-temperature Hopkinson pressure bar experimental system with atmosphere protection device |
| CN103163023A (en) * | 2013-03-14 | 2013-06-19 | 西南石油大学 | Method and device for testing environmental fracture toughness of petroleum pipe |
| CN103163023B (en) * | 2013-03-14 | 2015-04-22 | 西南石油大学 | Method and device for testing environmental fracture toughness of petroleum pipe |
| CN104280292A (en) * | 2014-09-19 | 2015-01-14 | 国家电网公司 | Ventilating device for small punch creep test |
| CN104315847A (en) * | 2014-09-19 | 2015-01-28 | 国家电网公司 | High temperature heating furnace for small drill drift creep test |
| CN105466793A (en) * | 2016-01-06 | 2016-04-06 | 辽宁工业大学 | Device for testing plastic deformation capacity of metal glass material |
| CN108693026A (en) * | 2017-12-22 | 2018-10-23 | 宁波诺丁汉大学 | A kind of small punch test system and its test method based on acoustic emission sensor |
| CN108225902A (en) * | 2018-03-15 | 2018-06-29 | 国电锅炉压力容器检验中心 | A kind of station boiler small punch test device |
| CN108225903A (en) * | 2018-03-15 | 2018-06-29 | 国电锅炉压力容器检验中心 | A kind of station boiler small punch test device |
| CN108489805A (en) * | 2018-03-19 | 2018-09-04 | 常州大学 | A kind of small drift test fixture under surrounding medium |
| CN110501217A (en) * | 2019-09-25 | 2019-11-26 | 中南大学 | A kind of creep compression clamp |
| CN110501216A (en) * | 2019-09-25 | 2019-11-26 | 中南大学 | A kind of creep compression clamp component |
| CN110501216B (en) * | 2019-09-25 | 2024-03-08 | 中南大学 | Creep compression clamp assembly |
| CN110501217B (en) * | 2019-09-25 | 2024-03-08 | 中南大学 | Creep compression clamp |
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Open date: 20080528 |