CN220568543U - High-temperature stretching clamp for high-temperature alloy ultrathin material - Google Patents

Abstract

The utility model relates to the field of tensile property testing of high-temperature alloy materials, specifically a high-temperature tensile fixture for ultra-thin materials of high-temperature alloys, and is especially used for high-temperature tensile testing of ultra-thin materials with a thickness of less than 0.1 mm. The clamp is composed of two mirror-symmetrical clamping bodies, the upper clamping body and the lower clamping body. The upper clamping body and the lower clamping body adopt a cylindrical structure. The corresponding circular end faces of the upper clamping body and the lower clamping body are respectively provided with width and super The clamping groove is suitable for the thickness of the thin material tensile specimen. There is a positioning hole on the side of the upper clamp body and the lower clamp body that is suitable for the size of the pin hole at the sample clamping end. The positioning hole is located on the upper clamp body and the lower clamp body. The corresponding end of the clamp body passes through the clamping groove vertically. The utility model can reliably clamp ultra-thin material tensile specimens under high temperature conditions, and can solve the problems of unreliable clamping of ultra-thin materials by traditional clamps, mismatch between the clamp and the sample, and the clamp is too large to be used in high-temperature furnaces.

Description

A high-temperature drawing fixture for high-temperature alloy ultra-thin materials

Technical field

The utility model relates to the field of tensile property testing of high-temperature alloy materials, specifically a high-temperature tensile fixture for ultra-thin materials of high-temperature alloys, and is especially used for high-temperature tensile testing of ultra-thin materials with a thickness of less than 0.1 mm.

Background technique

At present, traditional tensile fixtures use friction clamps (such as wedge chucks, flat push chucks, etc.) to fix tensile specimens. The friction clamps are extremely unstable under high temperature conditions and cannot meet the needs of high-temperature alloys. There are testing requirements for ultra-thin tensile specimens under high temperature conditions, and ultra-thin tensile specimens (thickness ≤ 0.1mm) are usually small-sized specimens. There is a mismatch between the traditional fixture and the specimen, and the size of the traditional fixture is too large. There are problems such as the inability to be used in high-temperature furnaces, so it is necessary to develop a small high-temperature drawing fixture for ultra-thin high-temperature alloy materials.

Utility model content

In order to overcome the defects and shortcomings of the existing traditional stretching clamps, the purpose of this utility model is to provide a high-temperature stretching clamp for high-temperature alloy ultra-thin materials, so as to solve the problem of unreliability of traditional clamps for clamping ultra-thin materials and the problem of clamping and testing. There are problems such as sample mismatch and fixtures that are too large to be used in high-temperature furnaces.

The technical solution of this utility model is:

A high-temperature stretching fixture for ultra-thin high-temperature alloy materials. It consists of two mirror-symmetrical clamp bodies: an upper clamp body and a lower clamp body. The upper clamp body and the lower clamp body adopt a cylindrical structure. The upper clamp body and the lower clamp body are The corresponding round end faces of the concrete clamps are respectively provided with clamping grooves with a width suitable for the thickness of the ultra-thin tensile specimen. The sides of the upper clamp body and the lower clamp body are respectively provided with a pin hole of the same size as the sample clamping end. Adaptable positioning holes are located at the corresponding ends of the upper clamp body and the lower clamp body and pass vertically through the clamping groove.

In the high-temperature tensile fixture for high-temperature alloy ultra-thin materials, the clamping end of the ultra-thin tensile specimen extends into the clamping groove, and the positioning pins pass through the positioning holes and the sample clamping end pin holes in sequence. Fixed connection with ultra-thin tensile specimen.

The high-temperature tensile fixture used for high-temperature alloy ultra-thin materials, the ultra-thin material tensile specimen adopts a pin-through connection method, and its thickness is ≤0.1mm; the positioning pins match the connection points of the positioning holes, and their diameters are 1~10mm; when clamping ultra-thin tensile specimens with small thickness, positioning pins of different specifications are used to ensure that the ultra-thin tensile specimen is on the tensile axis.

In the high-temperature tensile fixture for ultra-thin high-temperature alloy materials, the clamping grooves of the upper clamp body and the lower clamp body pass through the center of the circular end surface and are located on the same plane, which facilitates the insertion and insertion of the clamping end of the ultra-thin material tensile sample. Center.

The diameter of the upper clamp body and the lower clamp body of the high-temperature stretching clamp for high-temperature alloy ultra-thin materials is Φ20~40mm, and the depth of the clamping groove is 10~15mm.

In the high-temperature stretching clamp for high-temperature alloy ultra-thin materials, the upper end of the upper clamp body and the lower end of the lower clamp body are respectively provided with screws along the axis direction, so that the upper clamp body and the lower clamp body are respectively fixed on the high-temperature pull rod through the screw rods. superior.

The advantages and beneficial effects of this utility model are:

1. The ultra-thin tensile specimen and the clamp of this utility model adopt a pin connection method to fix the specimen, which ensures reliable clamping and avoids the slipping problem of the ultra-thin tensile specimen during high-temperature tensile testing.

2. The width of the clamping groove of this utility model is adapted to the thickness of the tensile specimen, and does not provide space for the deformation of the pin hole at the specimen clamping end; at the same time, the clamp can quickly complete the specimen clamping and specimen centering operations, solving the problem The technical difficulty of reliably clamping ultra-thin superalloy materials with a thickness less than or equal to 0.1mm during high-temperature tensile testing has improved the success rate of the test.

Description of drawings

Figure 1 is a schematic structural diagram of the utility model.

Figure 2 is a schematic structural diagram of the clamp body.

Figure 3 is a schematic structural diagram of the positioning pin.

Figure 4 is a schematic structural diagram of an ultra-thin tensile specimen.

In the picture: 1-upper clamp concrete; 2-lower clamp concrete; 3-clamping groove; 4-positioning pin; 5-positioning hole; 6-tensile specimen; 7-specimen clamping end pin hole; 8- screw.

Detailed ways

Below, the utility model will be further described with reference to the accompanying drawings.

As shown in Figures 1 to 4, the high-temperature stretching fixture for super-alloy ultra-thin materials consists of two mirror-symmetrical clamp bodies, the upper clamp body 1 and the lower clamp body 2. The upper clamp body 1 and the lower clamp body 2 are cylindrical. structure, the upper end of the upper clamp body 1 and the lower end of the lower clamp body 2 are respectively provided with screws 8 along the axis direction, so that the upper clamp body 1 and the lower clamp body 2 are respectively fixed on the high-temperature pull rod through the screw 8, so that the upper clamp body 1 and the lower clamp body 2 The lower clamp body 2 is reliably connected to the high-temperature pull rod. The corresponding circular end faces of the upper clamp body 1 and the lower clamp body 2 are respectively provided with clamping grooves 3 whose width is adapted to the thickness of the ultra-thin tensile specimen. The sides of the upper clamp body 1 and the lower clamp body 2 are respectively provided with clamping grooves 3 A positioning hole 5 adapted to the size of the sample clamping end pin hole 7, the positioning hole 5 is located at the corresponding ends of the upper clamp body 1 and the lower clamp body 2 and passes vertically through the clamping groove 3.

The clamping end of the tensile specimen 6 extends into the clamping groove 3, and the positioning pin 4 passes through the positioning hole 5 in sequence, and the specimen clamping end pin hole 7 is fixedly connected to the tensile specimen 6. It can be seen from the test results that the ultra-thin tensile specimen 6 extends into the clamping groove 3 and is fixed through the positioning pin 4 through the positioning hole 5. The fracture position is within the gauge length. The clamping effect of this clamp under high temperature conditions is good.

In order to ensure the centering of the tensile specimen 6, the clamping grooves 3 of the upper clamp body 1 and the lower clamp body 2 need to pass through the center of the circular end surface and be located on the same plane to facilitate the insertion and alignment of the clamping ends of the ultra-thin tensile specimen 6 middle. In this embodiment, the diameters of the upper clamp body 1 and the lower clamp body 2 are about Φ30mm, the depth of the clamping groove 3 is 12mm, and the connection between the positioning pin 4 and the positioning hole 5 matches, and their diameters are both 5mm.

The high-temperature clamp is made of K465 high-temperature resistant alloy material, which can enable the test temperature to reach 800°C. It is used in a high-temperature furnace to ensure that the clamp has good mechanical properties from room temperature to 800°C. Ultra-thin tensile specimens are connected through pins, and the clamping thickness is downwardly compatible from the maximum specification (0.1mm). When clamping specimens with small thickness, positioning pins of different specifications are added on both sides of the tensile specimen to ensure Ensure that the ultra-thin tensile specimen is on the tensile axis.

The implementation results show that the utility model can reliably clamp ultra-thin tensile specimens under high temperature conditions, solving the problems that traditional clamps cannot meet.

Claims (3)

1. The high-temperature stretching clamp for the super-thin high-temperature alloy material is characterized by comprising an upper clamp body and a lower clamp body which are in mirror symmetry, wherein the upper clamp body and the lower clamp body are of cylindrical structures, clamping grooves with the width corresponding to the thickness of the super-thin material stretching sample are respectively formed in round end faces corresponding to the upper clamp body and the lower clamp body, positioning holes with the size corresponding to pin holes of clamping ends of the sample are respectively formed in the side faces of the upper clamp body and the lower clamp body, and the positioning holes are positioned at the end parts corresponding to the upper clamp body and the end parts corresponding to the lower clamp body and vertically penetrate through the clamping grooves;

the clamping end part of the ultrathin tensile sample stretches into the clamping groove, and the positioning pin sequentially passes through the positioning hole and the pin hole of the clamping end of the sample to be fixedly connected with the ultrathin tensile sample;

the ultrathin tensile sample adopts a pin-penetrating connection mode, and the thickness of the ultrathin tensile sample is less than or equal to 0.1mm; the diameters of the connecting parts of the positioning pins and the positioning holes are 1-10 mm; when the ultrathin tensile sample with small thickness is clamped, the ultrathin tensile sample is ensured to be positioned on a tensile axis by adopting positioning pins with different specifications;

the clamping grooves of the upper clamp body and the lower clamp body are positioned on the same plane through the circle center of the round end surface, so that the clamping ends of the ultrathin tensile sample can be conveniently inserted and centered.

2. The high-temperature stretching clamp for the super-thin high-temperature alloy material according to claim 1, wherein the diameter of the upper clamp body and the lower clamp body is phi 20-40 mm, and the depth of the clamping groove is 10-15 mm.

3. The high-temperature stretching clamp for the super-thin high-temperature alloy material according to claim 1, wherein the upper end of the upper clamp body and the lower end of the lower clamp body are respectively provided with a screw rod along the axial direction, so that the upper clamp body and the lower clamp body are respectively fixed on the high-temperature pull rod through the screw rods.