The equipment in underground mines provides a continuous production flow, depending on the way their quality is preserved during operation. TR-7A scraper conveyer subassemblies, which function Jiu Valley coal basin and are subjected to abrasion wear, showed high failure frequency (chains, chain elevators, driving turning drums), as well hydraulic couplings certain electric of same machinery. da...

Mold Shape Deposition Manufacturing (Mold SDM) is a Solid Freeform Fabrication technique for producing complex shaped fugitive wax molds. A variety of castable polymer and ceramic materials have been used to make parts from these molds. This paper describes the Mold SDM method and an automated mold building machine based on a commercial CNC mill. Process steps, material selection and equipment ...

Mold Shape Deposition Manufacturing (Mold SDM) is a Solid Freeform Fabrication technique for producing complex shaped fugitive wax molds. A variety of castable polymer and ceramic materials have been used to make parts from these molds. This paper describes the Mold SDM method and an automated mold building machine based on a commercial CNC mill. Process steps, material selection and equipment ...

This article is devoted to the study of technology preparation smooth parts prepared plastic materials working in oil-field equipment. The strengh part sin equipment,the collection parts, as well complex properties are studied. Due fact that components have high performance indicators,the usual processing methods used by preparing them various constructions. shows chemical environment,the items...

Recently, short fiber reinforced composites are widely utilized in many structural parts in automobile, infrastructure and electric equipment applications due to their high specific strength, high specific stiffness, long fatigue life and high impact resistance as well as cost effective capability of production. If these parts are exposed to low-velocity impact, significant damages may develop ...

In industries characterized by heavy utilization of equipment and machinery, such as mining, oil & gas, utilities, transportation, adequate stockholding of critical spare parts becomes essential. Insufficient stocks affect overall performance of physical assets, as lack of spares may result in gross penalties, lower availability or increased operational risks. On the other hand, oversized inven...