Pneumatic Suspension of the Forging Hammer

Water hammer dissipation in pneumatic slug tests

A laboratory study of rock properties affecting the penetration rate of pneumatic top hammer drills

In this paper, after collecting the rock samples from eight mines and one high way slope, the tests for determination of dry density, Uniaxial Compressive Strength, tensile Strength (Brazilian Test), elastic modulus, Schmidt hammer rebound number have been done on samples. In addition, in order to calculating the mean size of rock grains, quartz content, hardness and abrasivity, a thin sections...

Students’ Project: Aesthetic and Ergonomic Redesign of the Pneumatic Hammer

Every successful company aims to design successful products. The first phase of the design process, called product design, is therefore very important. Designers’ obligation is, for better break trough of the product on the market, to apply these demands and expectations to the developing product considering general, objective factors that have influence on design of specific product. Mechanica...

Reparation of the Damaged Forging Hammer Mallet by Hard Facing and Weld Cladding

During the long-term operation, mallets of the forging hammers are exposed to thermal fatigue due to the cyclic temperature changes and impact loads. Taking into account very high price, and a risk of buying frequently the new parts, the necessity of their reparation becomes obvious. The forging hammer mallet (Figure 1), is primarily exposed to the impact compressive loads, and partially also t...

a laboratory study of rock properties affecting the penetration rate of pneumatic top hammer drills

in this paper, after collecting the rock samples from eight mines and one high way slope, the tests for determination of dry density, uniaxial compressive strength, tensile strength (brazilian test), elastic modulus, schmidt hammer rebound number have been done on samples. in addition, in order to calculating the mean size of rock grains, quartz content, hardness and abrasivity, a thin sections...