CN2615656Y

CN2615656Y - Micro-sample cutter

Info

Publication number: CN2615656Y
Application number: CNU032304684U
Authority: CN
Inventors: 郭良辉; 徐宏; 黄志荣; 侯峰; 刘宽宏
Original assignee: East China University of Science and Technology
Current assignee: East China University of Science and Technology
Priority date: 2003-04-18
Filing date: 2003-04-18
Publication date: 2004-05-12
Anticipated expiration: 2013-04-18

Abstract

The utility model relates to a micro sampling knife tool comprising a bowl-shaped hemishere shell equipped with cutter tooth to cut objects on the outer rim of the bowl-shaped hemishere shell. Connecting pieces are equipped on the bottom of the bowl-shaped hemishere shell. The utility model has very obvious advantages that using the rotating of cutter tooth to cut the surface of equipment, which won't form big sampling blow-hole, and can sample homogeneously, can satisfy the sampling requirement of different sizes of material. The sampling knife tool of the utility model is aimed at nondestructive sampling, can get sampling from equipments and non-destruct members or destruct members a little. Additionally the micro sampling knife tool can be used in material sampling of responsive portion which is difficult to sample and analyze just like welding seam or heat-affected zone and equipment and tubes which can't be destructed during sampling, and the micro sampling knife tool has wide application area and economic benefit.

Description

The micro-test sample cutter

Technical field

The utility model relates to a kind of cutter, is specifically related to obtain on a kind of slave unit the cutter of material sample.

Background technology

At labour equipment, such as pressure vessel and pipeline, their environment for use is general relatively more abominable, usually in High Temperature High Pressure and face under the hydrogen-type corrosion condition and move.Metal long-time running under this condition suffers factors such as mechanical stress, thermal stress, burn into radiation, chemical action easily, the material deterioration can take place its performance is descended, and shortens the serviceable life of equipment.For this reason, need be from obtaining material sample at labour equipment, the utilization forecasting technique in life span obtains economic benefit to greatest extent with the prolonging overhaul time interval.

Present traditional equipment for moving under the High Temperature High Pressure is taken a sample and material properties test all adopts destructive test, promptly to obtain the material degradation situation of material property behind the long term high temperature high-voltage operation, just need be from be enough to finish a test section of performance test in the intercepting of labour equipment.But for most equipment, this way is unallowed, thereby has limited the application of forecasting technique in life span.

How petroleum chemical industry manyly assesses high temperature military service material degradation degree, how to predict that high-temperature material residual life and how to evaluate band split a series of problem demanding prompt solutions such as military service high-temperature component integrality if existing.Tradition lossless detection method and sampling test method are all being brought into play in these areas always and are being acted on, but though both each have its limitation---the former is simple, harmless, known to information imperfect, enough not accurately yet; The latter is accurate, reliable, but has destructiveness, and can't take a sample sometimes.

Traditional several sampling methods be obtained material sample as experimental analysis on can slave unit, and make great efforts to reduce equipment damage, but also do not have a kind of method can really successfully obtain at labour equipment and the nondestructive sample of member.First method is in the incision of two places of labour equipment surface, forms V font groove, cuts along whole length direction, just can obtain a leg-of-mutton material sample in the slave unit surface.If cutting is not to carry out along whole length direction, cut to obtain material sample at two end points places with regard to other two cutters of needs so.Two cutters are made the cup-shaped emery wheel of depression a little, form the sample of ship shape.Cutting can obtain a bigger sample in the slave unit surface like this, the calixconcavity that stays next significant need to repair.The reparation of material often is very time-consuming and also is very expensive, can make structure become fragile simultaneously.This method is often feasible for the major diameter container, but can't use the minor diameter container or pipe interior is taken a sample.

Another method is not having or during the slight damage structure, can obtaining some information of relevant material, is to be called as " duplicating ".After this technology was normally carried out mechanical polishing and chemical etching, utilization surface coating technology was come the surface of copying equipment material.Liquid coating is coated in material surface, and coating hardening is then peeled off it from material surface, just can obtain the mirror image of subsurface material surface characteristics.This technology can only detect surface characteristics, can not be in order to the analysis of material performance.Clearly, when the situation of wanting assessment apparatus or other structure or material failure analysis, it is often very sorry to lack material samples, therefore, how to design a kind of cutter, to reach the purpose of " harmless sampling ", is whether people expect.

Summary of the invention

The utility model technical issues that need to address are a kind of micro-test sample cutters of design, to overcome the above-mentioned defective that prior art exists, satisfy the needs of relevant department.

The technical solution of the utility model:

A kind of micro-test sample cutter comprises bowl-shape hemispherical Shell, and its outer rim is provided with in order to cut cutter tooth, is provided with connecting elements at the bottom of its shell, and this connecting elements can be used for being connected as motor etc. with other device, so that drive the motion of said cutter.

Said cutter is mounted in and uses on the motor, when motor rotated, cutter rotated thereupon, and the cutter tooth that the cutter outer rim is provided with is close to equipment surface and is cut, the material sample that cutting obtains will be trapped in the inside of bowl-shape cutter, and this moment, cutter just became a good recovering mechanism.

The utility model has the advantages that very significant, utilize the rotary cutting equipment surface of cutter tooth, can not form big sampling depression, and sampling evenly, and can be according to the spherical crown shell of the hemisphere of the size design cutter of material sample, when sample is less, cutter can be made spherical crown shell less than hemisphere; When sample is big, cutter can be made spherical crown shell greater than hemisphere, therefore can satisfy the sampling requirement of the material sample of different size size.The sampling cutter of the utility model design, target based on " harmless sampling ", can obtain sample on the slave unit, and harmless or little the damage in member, also it can be applied to weld seam or heat-affected zone etc. be difficult to the sensitive part of sample analysis and do not possess the equipment that destroys sampling condition and the material sampling of pipeline in, have wide applications and economic benefit.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the cutter tooth synoptic diagram.

Synoptic diagram when Fig. 3 works for the utility model.

Embodiment

Referring to Fig. 1 figure and 2, micro-test sample cutter of the present utility model, comprise bowl-shape hemispherical Shell 1, its outer rim is provided with the cutter tooth 2 in order to cutting, said cutter tooth 2 is evenly distributed on the outer rim of hemispherical Shell 1, be provided with connecting elements at the bottom of its shell, said connecting elements comprises connecting hole 3 and the convex 4 that is arranged on hemispherical Shell 1 bottom centre.

As seen from Figure 3, the utility model also comprises frame, and said frame comprises fixture 6, nut 7, shaft coupling 8, electric machine main shaft 9 and the bearing 10 that has push rod 5.

Said bearing 10 is fixed on the convex 4 of micro-test sample cutter hemispherical Shell 1 bottom by nut 7 and connecting hole 3;

Said fixture 6 is fixed on the shell of bearing 10;

The right-hand axis of said shaft coupling 8 is rotatably mounted in the fixture 6;

Said electric machine main shaft 9 is connected with shaft coupling 8, and the motion of electric machine main shaft 9 passes to micro-test sample cutter hemispherical Shell 1 through shaft coupling 8, realizes the gyration of micro-test sample cutter.

The sampling process of Tool in Cutting: cutter is driven by rotatablely moving of coming out of motor, and it is a gyration, utilizes push rod to make cutter realize cutting movement around center cutter axis rotation (being direction of feed) along B direction moving linearly simultaneously.Sampling basic process is exactly: at first, allow the cutter outer rim be close to equipment surface; Cutter turns over an angle then, cutter integral body (comprising associate member) is fallen to be adjacent to equipment surface simultaneously; And then self rotatablely move and the synthesis of linear feeding under begin cutting; After the cutting sampling was finished, the material sample that is cut was trapped on the inwall of bowl-shape cutter at last.

Claims

1. a micro-test sample cutter is characterized in that, comprises bowl-shape hemispherical Shell (1), and its outer rim is provided with cutter tooth (2), is provided with connecting elements at the bottom of its shell,

2. micro-test sample cutter according to claim 1 is characterized in that said cutter tooth 2 is evenly distributed on the outer rim of hemispherical Shell (1).

3. micro-test sample cutter according to claim 1 is characterized in that, said connecting elements comprises connecting hole (3) and the convex (4) that is arranged on hemispherical Shell (1) bottom centre.

4. according to claim 2 or 3 described micro-test sample cutters, it is characterized in that also comprising frame, said frame comprises fixture (6), nut (7), shaft coupling (8), electric machine main shaft (9) and the bearing (10) that has push rod (5);

Said bearing (10) is fixed on the convex (4) of micro-test sample cutter hemispherical Shell (1) bottom by nut (7) and connecting hole (3);

Said fixture (6) is fixed on the shell of bearing (10);

The right-hand axis of said shaft coupling (8) is rotatably mounted in the fixture (6);

Said electric machine main shaft (9) is connected with shaft coupling (8).