CN203772640U - Stainless steel impact sample pliers - Google Patents

Abstract

The utility model relates to a stainless steel pipe impact test tool, in particular to a stainless steel impact sample clamp. The mouth of the pliers is integrated with the handle, and there is an operating ring at the end of the handle. The front end of the handle is a straight metal rod, and a positioning block is fixed on the mouth of the pliers. The positioning block and the metal rod are vertically arranged. The position is fixedly connected with the metal rod, the top of the positioning block is a plane, and a positioning bump protrudes from the center. In the above structure, a positioning block is fixed on the pliers mouth, and a positioning bump protrudes from the positioning block, and the positioning block is vertically arranged with the pliers mouth. In the notch, the clamp mouth and the positioning block form a cross fixing force, which can keep the sample in the striking center for a short time, and the clamping stability is very high.

Description

Stainless Steel Impact Specimen Clamp

technical field

The utility model relates to a stainless steel pipe impact test tool, in particular to a stainless steel impact sample clamp.

Background technique

The Charpy impact test is a test used to determine the notch resistance (toughness) of metal materials. Prepare a metal sample with a certain shape and size, so that it has a U-shaped notch or a V-shaped notch, and it is in a simply supported beam state on the Charpy impact testing machine. For notch punching, calculate the absorbed energy of the sample by using the height difference when the pendulum rises again when it breaks, namely Aku and Akv. Impact tests can be performed at different temperatures. A large absorbed work value (joule) indicates that the material has good toughness and is not sensitive to gaps in the structure or other stress concentrations. For materials with important structures, V-shaped notch specimens that can better reflect the notch effect have been used for impact tests in recent years.

When stainless steel is used at a low temperature of -196°C, an impact test is required, but the existing sample pliers only have a chuck, and the impact laboratory requires a rapid impact within 5 seconds. The traditional pliers cannot keep the sample during the impact process. Stay on the centerline, this is the result of the displacement force created by the impact.

Contents of the invention

The purpose of the utility model is to provide a stainless steel impact sample clamp that can keep the sample on the center line in a short time and has high clamping stability.

The technical scheme adopted by the utility model to solve the technical problem is: a stainless steel impact sample forceps, including a handle, a jaw, the jaw is integrated with the handle, an operating ring is provided at the end of the handle, and the front end of the handle is It is a straight metal rod, fixedly set the positioning block on the pliers mouth, the positioning block and the metal rod are vertically arranged, the bottom center of the positioning block is fixedly connected with the metal rod, the top of the positioning block is a plane, and a positioning bump protrudes from the center .

In this setting, a positioning block is fixed on the pliers mouth, and a positioning bump protrudes from the positioning block, and the positioning block is set perpendicular to the pliers mouth. When in use, when the pliers mouth clamps the sample, the positioning bump Clamped into the gap, the clamp mouth and the positioning block form a cross fixing force, which can keep the sample in the striking center for a short time, and the clamping stability is very high.

The utility model is further set as: the positioning bumps are V-shaped bumps or U-shaped bumps, the angle of the V-shaped bumps is 45 degrees, and the angle of the U-shaped bumps is less than 90 degrees.

The positioning bumps set in this item are V-shaped bumps or U-shaped bumps. There are two types of Charpy impact tests, one is V-shaped notch, the other is U-shaped notch, and the V-shaped bump is four Fifteen degrees, stuck in the gap, the positioning is the most stable, of course, other angles are also available, and the U-shaped bump, because the U-shaped gap is generally less than 90 degrees, the U-shaped bump must fully fit the gap to achieve stability role of positioning.

The further setting of the utility model is: the jaws of the pliers are tilted, the jaws are higher than the plane where the handle is located, and parallel to the plane where the handle is located.

In this setting, the jaws of the pliers are set up. This is because the sample support seat is not a plane, but has a stepped structure. For better positioning and fixing, the jaws of the utility model are set in a stepped shape. Can better fix and clamp the specimen.

Description of drawings

Fig. 1 is the structural representation of present embodiment;

Fig. 2 is the structural representation of the positioning block of the present embodiment;

Detailed ways

Referring to Fig. 1 and Fig. 2, it can be known that a stainless steel impact sample forceps of the utility model comprises a handle 1 and a jaw 2, the jaw 2 is integrated with the handle 1, and an operating ring 11 for operation is provided at the end of the handle 1. The front end of the handle 1 is a straight metal rod. The positioning block 3 is fixed on the pliers mouth 2. The positioning block 3 is perpendicular to the metal rod. The center position of the bottom of the positioning block 3 is fixedly connected with the metal rod. The top of the positioning block 3 is a plane. , a positioning bump 31 protrudes from the center, the positioning bump 31 is a V-shaped bump, and the raised angle of the V-shaped bump is forty-five degrees, because the U-shaped bump is not used in the utility model It is a common structure, so it does not need to be explained in conjunction with the drawings. Its U-shaped bumps need to be fully adapted to the sample gap. The jaw 2 is tilted, and the jaw 2 is higher than the plane where the handle 1 is located, and parallel to the plane where the handle 1 is located.

Apparently, the above-mentioned embodiments are only examples for the purpose of clear description, rather than limiting the implementation. For those skilled in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. And the obvious changes or changes derived therefrom are still within the protection scope of the present utility model.

Claims (3)

1. stainless steel impact specimen pincers, comprise handle, jaw, jaw and handle are wholely set, be provided with the operation ring for operating at the end of handle, it is characterized in that: the front end of handle is straight line Metallic rod, on jaw, be fixedly installed locating piece, locating piece is vertical with Metallic rod to be arranged, the bottom centre position of locating piece is fixedly connected with Metallic rod, and the top of locating piece is plane, a positioning convex point of center projection.

2. according to stainless steel impact specimen pincers claimed in claim 1, it is characterized in that: described positioning convex point is V-type salient point or U-shaped salient point, and the protrusion angle of V-type salient point is 45 degree, and the angle of U-shaped salient point is less than 90 degree.

3. according to the stainless steel impact specimen pincers described in claim 1 or 2, it is characterized in that: jaw perk, jaw is higher than handle place plane, and parallel handle place plane.