Quality Control of Induction on Hardened Cast Iron Cylinder Head Valve Seats

1994 ◽  
Vol 163-165 ◽  
pp. 367-376
Author(s):  
Ch.Ch. Lal
Keyword(s):  
Quality Control ◽  
Cast Iron ◽  
Cylinder Head ◽  
Hardened Cast

Cracking in Cast Iron Diesel Engine Cylinder Heads

1970 ◽  
Vol 185 (1) ◽  
pp. 807-823 ◽  
Author(s):  
L. W. L. Smith ◽  
H. T. Angus ◽  
A. D. Lamb
Keyword(s):  
Cast Iron ◽  
Diesel Engine ◽  
Experimental Work ◽  
Cylinder Head ◽  
Cooling Water ◽  
Test Apparatus ◽  
Directed Flow ◽  
Critical Areas ◽  
Engine Cylinder ◽  
Diesel Cylinder

The nature and mechanism of cracking in cast iron diesel cylinder heads arising from the differential thermal strains which occur in service are reviewed. The results of experimental work with test apparatus simulating the conditions in a cylinder head are presented, illustrating the importance of controlling the boiling conditions of the water at the cooling face of the flame deck. It is concluded that cylinder head temperatures, and therefore the danger of cracking, can be successfully reduced by increasing the flow of cooling water over critical areas by some form of directed flow.

Thermal Shock on Cylinder Head Induced by High Power Laser

2012 ◽  
Vol 170-173 ◽  
pp. 266-269
Author(s):  
Ming Pang ◽  
Chang Zhen Liu ◽  
Zhi Min Xie ◽  
Guang Hui Xu
Keyword(s):  
Cast Iron ◽  
Thermal Shock ◽  
Cylinder Head ◽  
Ccd Camera ◽  
Optical Microscope ◽  
High Power Laser ◽  
Power Laser ◽  
Fatigue Specimen ◽  
Graphite Cast Iron ◽  
Scanning Electron

Experiment of thermal shock was conducted by laser on cylinder head of graphite cast iron. Infrared pyrometers were mounted on the top of the workbench to sample the transient surface temperatures. The high resolution CCD camera was employed to sample transient images of the cylinder head. Microstructure of thermal shocking specimen was characterized by scanning electron microscopy (SEM) and optical microscope (OM). Mechanical properties of thermal fatigue specimen were evaluated by hardness. Results show that microstructure and hardness are not obviously changed, which mean that cylinder head of graphite cast iron has performance stabilization within the rang of thermal shocking temperature.

scholarly journals QUALITY CONTROL OF CYLINDER HEAD CASTING

2017 ◽  
Vol 14 ◽  
pp. 3-6 ◽  
Author(s):  
Eva Tillová ◽  
Mária Chalupová ◽  
Lenka Kuchariková
Keyword(s):  
Quality Control ◽  
Cylinder Head

scholarly journals STUDY OF THE SUITABILITY OF VARIOUS TYPES OF CASTING MATERIALS FOR THE MANUFACTURE OF A SHIP ENGINE

2021 ◽  
Vol 55 (5) ◽  
Author(s):  
Juan José Galán ◽  
Nuria Varela-Fernández ◽  
Manuel Ángel Graña-López ◽  
Almudena Filgueira-Vizoso ◽  
Ana García-Diez
Keyword(s):  
Tensile Strength ◽  
Cast Iron ◽  
Ultimate Tensile Strength ◽  
Cylinder Head ◽  
Brinell Hardness ◽  
Tensile Tests ◽  
Engine Block ◽  
Graphite Particles

The objective of this work was to study the suitability of three types of cast iron for the manufacture of a ship engine: EN-GJS-500-7U for the manufacture of the engine block, EN-GJS-400-15U for the cylinder head and EN-GJL-200 for the liner. Tensile tests were carried out to obtain the ultimate tensile strength (UTS) of each material. The results for the UTS were: 460 MPa for EN-GJS-500-7U, 390 MPa for EN-GJS-400-15U and 170 MPa for EN-GJL-200. Likewise, Brinell-hardness measurements were carried out and the elements present in the materials were determined with spectrometry. Finally, the size of graphite particles in each sample was determined.

Thermo-Fluid Analysis of the Exhaust Manifold Integrated With Cylinder Head

2012 ◽  
Author(s):  
Mohammad Amin Neshan ◽  
Ali Keshavarz ◽  
Ali Jazayeri ◽  
Ali Ghasemian
Keyword(s):  
Cast Iron ◽  
Thermal Resistance ◽  
Cylinder Head ◽  
Internal Combustion Engines ◽  
Low Cost ◽  
Combustion Engines ◽  
Exhaust Manifold ◽  
Warm Up ◽  
Fluid Analysis ◽  
Temperature Limitation

Exhaust manifold is an individual part of conventional internal combustion engines which is made of cast iron. Furthermore expensive alloys are needed to increase its thermal resistance. In the Integrated Exhaust Manifold into Cylinder Head (IEMCH), the exhaust manifold is manufactured as one part with the cylinder head. Thus its material changes from cast iron to aluminum which has a much lower thermal resistance than the cast iron. IEMCH has many advantages such as, low cost, lower weight and volume, less fuel consumption and faster warm-up. But due to its lower thermal resistance, it must be cooled. Here a new exhaust manifold is designed for IEMCH. Thermo-fluid analysis is carried out numerically to evaluate temperature limitation of the new exhaust manifold. The obtained results are compared to the standard exhaust manifold which indicates that by means of cooling, the new exhaust manifold can be remained at its proper temperature limitation. Thus no expensive alloys are needed in the new exhaust manifold.

Some Factors Influencing Cylinder Head Gasket Problems and Design

1973 ◽  
Vol 187 (1) ◽  
pp. 43-49
Author(s):  
M. G. Herrington
Keyword(s):  
Cast Iron ◽  
Diesel Engines ◽  
Cylinder Head ◽  
Cylinder Block ◽  
Temperature Variations ◽  
Factors Influencing ◽  
Test Conditions ◽  
Cylinder Head Gasket ◽  
Block Face

The environment under which a cylinder-head gasket has to function is reviewed and a typical cylinder head to cylinder block assembly is considered, outlining the temperature variations in the inlet and exhaust ports. Curves showing head-face to block-face movement for varying engine speeds and coolant temperatures are reviewed with power units running at accelerated gasket destruction test conditions. Comparisons are made between cast-iron block and aluminium head and cast-iron head and block for both petrol and diesel engines.

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