CN207675537U - A Fixture for Testing the High Temperature Creep Properties of Alloys - Google Patents

Abstract

A kind of fixture for beta alloy high temperature creep property, belong to measuring apparatus manufacturing technology field, it is constituted using upper high-temperature clamp and lower high-temperature clamp, upper high-temperature clamp is cylinder, one end is machined with external screw thread, the other end has plate body, has hanging column, lower high-temperature clamp identical as upper high-temperature clamp structure on plate body.Tested metal material both ends are processed into the hole coordinated with hanging column respectively, the male threaded stub of upper high-temperature clamp and lower high-temperature clamp is screwed into the internal thread hole of upper connecting rod and lower pull rod respectively again, then coordinated by the hanging column in the hole at metal material both ends and lower high-temperature clamp and upper high-temperature clamp and installed, carry out metal material creep test.Fixture provided by the utility model will not be deformed in hot operation, and when work is not easy to be destroyed, and test result is accurate.

Description

A Fixture for Testing the High Temperature Creep Properties of Alloys

technical field

The utility model belongs to the technical field of measuring equipment manufacturing, and is a fixture for testing alloy properties.

Background technique

Creep is the tendency of slow and permanent movement or deformation of solid materials under the influence of stress. It is the most commonly used test method to evaluate the high-temperature long-term performance of metal materials, and it is also an important basis for the design and selection of high-temperature components. The existing equipment for testing the high-temperature creep performance of alloys is mainly composed of a frame, an upper tie rod, a lower rod and a load cell. Internally threaded holes are processed at the ends of the machine, and a load cell is installed between the pull down rod and the frame. The two ends of the metal material to be tested are machined with external threads, and the external threads are matched with the internal threads of the upper and lower rods. During the test, the metal material is threaded with the upper and lower rods, and the metal material is heated. Then pull the upper Tie rods and pull rods, the creep test results are obtained by measuring the stretched length and force of the metal material.

However, for some alloy materials with high room temperature brittleness and low ductility, it is very difficult to process external threads, and some alloy materials cannot even process external threads, that is, the processing of creep test standard samples is a difficult problem, so it cannot be threaded with tie rods.

Contents of the invention

The technical problem to be solved by the utility model is to provide a fixture for testing the high temperature creep performance of the alloy, which can conveniently and effectively connect the metal material with the upper pull rod and the lower pull rod.

The solution of the utility model to solve the technical problem is to use the upper high-temperature fixture and the lower high-temperature fixture to form a fixture for testing the high-temperature creep performance of the alloy. The upper high-temperature fixture is a cylindrical body with external threads processed at one end and a plate-shaped body at the other end. The plane of the plate-shaped body is parallel to the axial direction of the cylindrical body, there are hanging posts on the plate-shaped body, the hanging posts are perpendicular to the plane of the plate-shaped body, and the structure of the lower high-temperature fixture is the same as that of the upper high-temperature fixture. The two ends of the metal material to be tested are respectively machined with holes matching the hanging columns, and then the external thread ends of the upper high temperature fixture and the lower high temperature fixture are respectively screwed into the internal thread holes of the upper and lower rods, and then the metal material is passed through The holes at both ends are installed in cooperation with the hanging columns of the lower high-temperature fixture and the upper high-temperature fixture to carry out the creep test of metal materials.

The fixture provided by the utility model will not be deformed when working at high temperature, and is not easy to be damaged when working; the hanging column and the metal sample with a round hole are firmly assembled, and the alloy material sample completely conforms to the shape of the regular creep sample. The test results precise.

Description of drawings

Fig. 1 is the schematic diagram of the utility model;

Fig. 2 is the top view of Fig. 1;

Figure 3 is a schematic diagram of the fixture installed on the test equipment.

Detailed ways

The fixture of the utility model is composed of an upper high-temperature fixture 1 and a lower high-temperature fixture 2. The upper high-temperature fixture 1 is a cylindrical body, one end is processed with an external thread 3, and the other end has a plate-shaped body 4. The plane of the plate-shaped body 4 and the cylindrical body The axis of the plate body 4 is parallel to the axis, there is a hanging post 5 on the plate body 4, the hanging post 5 is perpendicular to the plane of the plate body 4, and the lower high temperature fixture 2 has the same structure as the upper high temperature fixture 1. The test equipment mainly includes a frame 6 , an upper pull rod 7 , a lower pull rod 8 and a load cell 9 .

Claims (1)

1. A fixture for testing the high-temperature creep performance of alloys, characterized in that it consists of an upper high-temperature fixture and a lower high-temperature fixture, the upper high-temperature fixture is a cylindrical body, one end is processed with an external thread, and the other end has a plate-shaped body , the plane of the plate-shaped body is parallel to the axial direction of the cylindrical body, there are hanging posts on the plate-shaped body, the hanging posts are perpendicular to the plane of the plate-shaped body, and the structure of the lower high-temperature fixture is the same as that of the upper high-temperature fixture.