An analysis of cracking of turbine disk during hammer forging is presented by using the numerical simulation technology in this paper.

The analysis on the vibration and the antivibration measures of industrial forging hammer foundation;

This paper has studied the vibration isolation of divided anvil of forging hammer.

The actual data are gathered of anvil amplitude of vibration-isolatedhammers used at home and abroad and an investigation on the operation is also made ofsuch forging hammers used in our country.

Using the mathematically analytical method,a mathematical expression of the hammer-base amplitude is derived by way of establishing a vibrational damping-free mechanical model of dual-degree of freedom.

Cause Analysis on Unqualified DWTT of L360MB Pipeline Steel;

Cause Analysis of Unqualified DWTT of X70 Pipeline Steel;

Size, distributing, morphology and number of the MA island influencing yield ratio, yield strength and DWTT of the pipeline steel are introduced in the paper by analyzing influence of the MA island on mechanical properties in X70 and X65 pipeline steel.

Study of drop hammer impact sensitivity for big-bill explosives;

Study on equipment for drop hammer dynamic tear test;

This paper mainly deals with the key technologies involved in a guide tracked drop hammer breaker, including the working mechanism of the drop hammer, the design conception and working principle of the hydraulic control system, Indoor tests conducted on the prototype show that main parameters have met the design requirements.