Portable pneumatic hardness tester

Abstract

The invention relates to the technical field of material hardness testing, in particular to a portable pneumatic hardness tester. A hardness tester head is connected to the upper portion of a first processing part, a cylinder is connected to the lower portion of the first processing part, and a handle is connected to the side portion of the first processing part. A gas valve is arranged on the handle for controlling gas circulating and cut-off of the cylinder, and a material to be tested is clamped by a piston of the cylinder and a probe of the hardness tester head, so that the probe of the hardness tester head is subjected to pressure and a pressure value is displayed by the tester head. Compared with a conventional clamp type hardness tester, the portable pneumatic hardness tester is more labor-saving and efficient, staff does not need to consume excessive physical strength during operation, the staff can perform massive detection effortlessly, and the work efficiency is greatly improved; and on the other hand, the portable pneumatic hardness tester overcomes the shortcomings of huge size and heavy weight of a traditional table type pneumatic hardness tester, small size, easy carrying and high universality are achieved, inspection products are not limited by space, and the hardness of large-sized workpieces can be tested.

Description

technical field [0001] The invention relates to the technical field of material hardness testing, in particular to a portable pneumatic hardness tester. Background technique [0002] The hardness testers in the prior art mainly include clamp-type hardness testers, three-point pressing type hardness testers and desktop pneumatic hardness testers. [0003] Among them, the clamp-type hardness tester needs a lot of grip force to complete the press-in reading, and the opening of the clamp body is small, which has poor compatibility with the workpiece, and can only measure part of the surface hardness of a part of the workpiece; while the three-point push-type hardness tester requires the operator to provide positive direction with both hands. For the pressure test reading under the pressure test, the operator must be in a standing state. If the pressing posture is not correct, it will easily cause reading errors or even damage the meter head. The operation technology requires hig...

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Problems solved by technology

[0003] Among them, the clamp-type hardness tester needs a lot of grip force to complete the press-in reading, and the opening of the clamp body is small, which has poor compatibility with the workpiece, and can only measure part of the surface hardness of a part of the workpiece; while the three-point push-type hardness tester requires the operator to provide positive direction with both hands. For the pressure test reading under the pressure test, the operator must be in a standing state. If the pressing posture is not correct, it will easily cause reading errors or even damage the meter head. The operation technology requires high requirements, and the operation space must be sufficient; It consumes a lot of physical strength. After repeated operations, the detection speed of personnel is significantly reduced. Long-term operation is likely to induce risks such as occupational diseases, and it is impossible to complete a large number of inspections.

[0004] The desktop pneumatic hardness tester is bulky, inconvenient to carry, and has poor versatility. The test product is limited by space and cannot test the hardness of large-sized workpieces.

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