The premature breakage in some four cylinder diesel engine crankshafts was reported. All crankshafts were failed from the same region. Failures had occurred in the first crankpin, the nearest crankpin to the flywheel. Dynamic analysis and finite element modelling were carried out to determine the state of stress in the crankshaft. FEM results revealed that the first crankpin fillet is the most ...

ni-hard4 white cast iron is excellent wear resistant material and has been widely used in wearaffected equipment operated under extreme conditions, such as in mineral processing, cement, copper and iron manufacturing. in this study the effect of titanium addition (1.2, 0.7 and 0.2 wt.%) to the ni-hard 4 cast iron with the nominal composition of si= 1.5%, mn=0.5%, c=3%, p=0.05%, s= 0.05%, mo= 0....

Abstract In the work, from standpoint of a systematic approach, methodology for technological design repair and restoration worn parts using methods to improve quality working layer is proposed. For stages product life cycle, solving problem extending service after parts, general scheme structure information support were developed that ensure layer. A variant process cylinder liners modified gr...

This article discusses the technology of melting high-strength cast iron with a spheroidal graphite shape intended for D-49 type cylinder lid by modifying magnesium (Mg) in ladle and gating systems. Today, it is very important Republic Uzbekistan CIS countries to create improve production prepare high-responsibility parts railway transport. Improvement mechanical operational properties high str...

Master moulds are used to cast copper anode moulds. These iron moulds are made of grey or nodular cast irons. According to desirable properties of ductile irons, it was expected that ductile cast iron ...

during the course of our studies on archaeometallurgy in southeastern iran, we tried to survey the triangle of the sirdjān, neiriz and shahr- e- bābak. as a result, remains of old iron mining residues of smelting furnaces, and iron smelting slag heaps were observed and recorded. a few samples of iron ore and smelting slag have been analysed classically and instrumentally. according to the acq...

In the given article, results of tribological research chrome-gray cast iron coupling are presented, friction conditions between cylinder liner and compression segment being lubricated in various environments modeled: diesel (control), pure biodiesel B100 biodiesel-diesel B20 mixture. It was established that average values coefficient coupling, case using biofuels B20, as lubricating material, ...

As worldwide automotive ownership is set to exceed 2 billion vehicles by 2030 [1], environmental and economical pressures on the automotive industry mean there is a trend to reduce harmful greenhouse gas emissions whilst simultaneously improving fuel economy. The use of electrical hybrid, start-stop idling and materials light-weighting are some of the technological solutions which can offer eff...