SU1302192A2 - Device for tensile testing of ceramic mass - Google Patents

Abstract

The invention relates to a test technique and is intended to determine the strength and deformable characteristics of ceramic masses. The aim of the invention is to enhance the functionality by determining the deformability under tensile properties. The device, including the housing 1, the movable V Lg / / y / / (L with about oo with K

Description

WAT 2 with a cavity in the form of a truncated cone 3 and a ball 4 with a channel 5 located above its smaller base, an actuator 6 and a load measuring device, is additionally equipped with a device for measuring the movements of the moving gripper. The latter is made in the form of a scale 8 placed in the housing 1, and installed

The invention relates to a test technique, is intended to determine the strength and deformability indicators of ceramic masses and is an improvement of the device according to the authors. St. No. 1163260.

The aim of the invention is to enhance the functionality by determining the deformable characteristics under stretching.

On h: eterzhe shows the device, the general view.

The device includes a housing 1, a movable gripper 2, forming a cylindrical pair with the housing 1, a cavity. in the gripper 2 in the form of a truncated cone 3 and a ball 4 with a channel 5 located above its smaller base, an actuator 6, a force-measuring device 7 and a device for measuring the movement of a movable gripper in the form of a scale 8 located in the housing 1 and mounted on the gripper 2 sighting device 9. In case 1, channels 10 are filled to prevent the influence of vacuum on the test results of ceramic mass 11.

The device works as follows.

The device is installed on the surface of the plastic test ceramic mass, while the grip 2 is lowered into the lower position and rests on the shoulders of the housing 1. Applying a vertical load, the device is immersed in a ceramic mass 11, which fills the truncated gripper cone 2 and the ball 4, and Capture cavity 2 is removed through channel 5.

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2 viewfinder on the grip. 9. allowing to fix deformation of stretching of the sample. The ratio of the radii of the ball R and the smaller base of the cone r is determined from the inequality g- (0.450) R, which excludes plastic deformation of the sample during the test. tany. 1 il.

After € 1 of the ceramic mass 11 of the gripping cavity 2, the actuator 6 is turned on and the gripper 2 is lifted, as a result of which the sample of the ceramic mass formed in the gripping zone 2 is stretched. device 7, and the limiting deformation of the stretch: is fixed with the help of a device for measuring the movements of the movable gripper 2 by the movement of the sight 9 along the scale 8 at the moment of rupture of the sample by a sharp drop in shipments.

The ratio of the radii of the ball R and the smaller base of the cone g is determined from the inequality g with (0.2 1.8-0.450) R,

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which eliminates plastic deformation of the ball portion of the sample and its displacement.

Claims (1)

Invention Formula A device for testing the stretching of the ceramic mass according to ed. No. 1163260, characterized in that, with the extension of its functionality by determining the deformability characteristics under tension, it is equipped with a device for measuring the movements of the moving gripper, made in the form of the scale placed on the body and the reticle mounted on the gripper, and the radii of the ball and the smaller base of the cone are determined from the inequality r (0.218-0.450) R where r is the radius of the smaller base of the cone; R - rar, jus ball.