Here we explore competing processes for casting a small aluminum alloy connecting rod figure 14. Jun 16, 2018 manufacturing connecting rod in hot forging. All structured data from the file and property namespaces is available under the creative commons cc0 license. The crankshaft main journals rotate in a set of supporting bearings causing the offset rod journals to rotate in a circular path around the main journal centers. Selection of material, shape, and manufacturing process for a. Forging is often classified according to the temperature at which it is performed. These connecting rods are available with customization as per. Connecting rods forged 4340 steel connecting rod material. Materials science and engineering, volume 149, conference 1. Aluminium piston connecting rod assembly interchangeable, find complete details about aluminium piston connecting rod assembly interchangeable, aluminum connecting rods, forging connecting rods, shaft assembly seal ningbo yinzhou fuchun precision casting co. The connecting rod pushes the piston up, and is helped back down by the pistons reciprocal motion. A connecting rod is one of the most mechanically stressed components in internal combustion engines. Some examples of shapes obtained by forging process.
A comparison of manufacturing technologies in the connecting. About 200 companies in china forge connecting rods. Solution of manufacturing defects in connecting rod. These connecting rods are available with customization as per the specification detailed by the clients. Comparative study of the connecting rod manufactured. This type of connecting rod is created by drop forging the heated metal bar into net shape, then just do less machining to finished product.
Coupling to the crankshaft is achieved through solid journal bearing half shells inserted on both sides of the split. Comparative study of the connecting rod manufactured using forging and sintering. Process planning, tolerance chain, monte carlo, connecting rods. Youngs modulus e 210 gpa, yield strength s y 210 mpa, poissons ratio. Many connecting rods today are manufactured using cheape. Alloy steels are used for manufacturing conrods for high performance engines as they provide the required cyclic strength without substantially increasing the dimensions of critical. Fatigue analysis of connecting rod using finite element analysis 789 the stress at any point on the connecting rod at this axial load can be interpolated from the axial stress analysis results. In the above programmable output part of forging,estimated blow energy of 3 times straightening needs to be 16. Aljazaris fourth machine utilizing a connecting rod2. The major stress induced in the connecting rod is a combination of axial and bending stresses in operation. Pdf design and analysis of a connecting rod for the 117kw six. Paper also describes the main achievements in precision forging in china with focus on quality of forged products. A backup file containing the connecting rod was provided with the. Us5878491a process for the manufacture of a forged.
Through the suction valve the low pressure refrigerant is sucked inside the cylinder and through the discharge valve the compressed high pressure refrigerant is discharged to the discharge line, from where the refrigerant goes to the condenser. Shear surface tracking of the initial billet up to the final geometry. These blow energy can forge high deformation so that the resultant force is very low. Powder forging, alloy steel forging and nonferrous metal forging. The analysis of the scania line together with a benchmark among different leading companies on the connecting rod manufacturing has been undertaken. Forging is a manufacturing technique in which metal is plastically deformed from a simple shape like billet, bar, ingot into the desired shape in one or more stages. Implementation of this project increases the production of connecting rods by 200% in less than previous cycle time. Jan 04, 2019 connecting rods are not universally made by forging. Now that we have seen the principle of working of the reciprocating compressor, let us see the various parts of the compressor. The product thus obtained by forging is at good strength and free from any defects. This page was last edited on 7 january 2019, at 17.
We manufacture these products using high quality raw material and advanced technology in complete compliance with the defined. The connecting rods being used in this build also came from our previous race engine and were prepped. Pdf selection of connecting rod for good performance of engine is very difficult. Having in mind that conrod is a massproduct, choice of optimal way to manufacture these components is of vital technoeconomical importance. Files are available under licenses specified on their description page. The connecting rod is a high volume production from automobile side. Selection of material, shape and manufacturing process for a connecting rod abstract this activity centers on the courses of strength of materials and production design offered at a sophomore level mechanical engineering curriculum. In modern automotive internal combustion engines, the connecting rods are most.
Aluminium piston connecting rod assembly interchangeable, find complete details about aluminium piston connecting rod assembly interchangeable, aluminum connecting rods, forging connecting rods, shaft assembly seal ningbo. Connecting rods link oscillatory motion to rotary motion in ic engines, and rotary to oscillatory motion in pumps. We manufacture these products using high quality raw material and advanced technology in complete. Forging shop forging is a manufacturing process involving the shaping of metal using localized compressive forces. Pdf design and analysis of connecting rod with modified. Crane hook, connecting rod of ic engine, spanner, gear blanks etc. R k engineering works, pune manufacturer of forging. The profile of these mating surfaces on rod saddle and cap must remain absolutely intact and undisturbed. Published under licence by iop publishing ltd iop conference series. Pdf analysis and optimization of connecting rod with different. All these parts have been described in details below.
Localization of the shear surface tracking of the initial billet of a connecting rod. Modern manufacturing process of forged connecting rod. And some oems may use forged rods only on higher performance versions of a given car or engine. After analysis a comparison is made between existing steel connecting rod viz.
Connecting rod rectangular and ibeam crosssections with the assumed shape of the cross section for the connecting rod as shown in figure 2b, the cross sectional area of the ibeam section is 11 t 2. Established in the year 1997, in pune maharashtra, india, we rk engineering works are engaged in manufacturing and supplying of forging reduce roll, connecting rods, forging press bolsters, forging press cassettes, machine assembly, etc. Comparison of casting versus forging connecting rods in areas most influenced by casting requirements10. The connecting rod provides the mechanical linkage between piston and crankshaft and must exhibit properties of high strength, low inertial mass, and uniformity of mass with the other connecting rods attached to the crankshaft. Jul 11, 2014 powder forging, alloy steel forging and nonferrous metal forging. More product details about connecting rodforging from taiwan connecting rodforging suppliersprogress machinery co. Introduction a metal is shaped by compressive forces oldest metal working process 4000bc can be performed with a hammer and anvil typical forged products. One historian says this lack of technology had considerably limited the applications of mechanization4. This customer has a beche hammer first, and then buy a baixie hammer. Jun 12, 2014 we design this line for one japanese company to forge the connecting rods for honda auto.
Analysis and optimization of connecting rod used in. The forged steel rod is fabricated by starting with a wrought steel billet, heating the billet and forging it in the materials plastic temperature range, fracturing or cutting the rod cap end, and then machining portions of the product to realize the final dimensional characteristics of the component. Forging is a metal working process in which useful shape is obtained in solid state by hammering or pressing metal. Abstract connecting rod is a major part inside of an internal combustion engine. Forging is the primary process which is used for manufacturing of connecting rod and after various machining process carried out for get desired dimension and surface finish. Connecting rods are not universally made by forging. In fact, forging is often the optimum process, in terms of both part quality and cost, especially for applications that require maximum part strength, custom sizes or critical performance specifications. Hot forged connecting rods, in particular forged connecting rods for an internal combustion engine, especially when they are made of steel, are manufactured by a process which comprises hot forging of a connecting rod rough forging, a heat treatment and a machining operation.
Ilia et al 2005 provide the minimum ibeam area for the connecting rod for the 1. These ideas have been mainly related to machining sequence, machine tool and new technologies for machining. Forged steel is currently eco boost mustang material. Evaluation of crankshaft manufacturing methods an overview. Enter ansys in the working directory specif ied by your instruct or using.
A process for manufacturing a forged connecting rod of the type including a big end, a shank and a small end. Design and analysis of connecting rod using forged steel. It is one of the oldest metalworking arts with its origin about some thousands of years back. R k engineering works, pune manufacturer of forging reduce. After systematic inspections of connecting rod, we have found problem of cap tight and oversize of big end diameter of connecting rod. Fraunhofer institute for structural durability and system reliability lbf, darmstadt, deutschland. Analysis of finite volume of forging process of connecting rod. Dynamic load analysis and optimization of connecting rod. The connecting rod is usually made up of carbon steel forging. The important parts of the reciprocating compressor are. Introduction forging is one of the past known metalworking process. Fatigue analysis of connecting rod using finite element. Carbon steels or alloy steels are the most commonly used materials. Under drop forging process, it is able to withstand much greater loads and faster engine revolutions than a cast rod.
One end of a connecting rod is follows the circular path whereas the other end follows a path along with a straight line of big radius. An integrated study of dynamic hot forging of sae 1151 steel connecting rod is presented. Engine connecting rod an overview sciencedirect topics. Fatigue behavior and life predictions of forged steel and powder. Comparative study of the connecting rod manufactured using. Connecting rod is subjected to more stress than other engine components. A connecting rod is a shaft which connects a piston to a crank or crankshaft in a reciprocating engine. The video shows chk hammer is used to produce connecting rods. In europe, the invention of the crankconnecting rod system was unknown before the early fifteenth century. Abstract connecting rod is a major part inside of a internal combustion engine. A comparison of manufacturing technologies in the connecting rod industry. Aluminium piston connecting rod assembly interchangeable. The fourth part provides force calculations of a forged steel connecting rod.
The study includes material characterization, constitutive modeling, and numerical simulation of the. The position of the central looseness of a crankshaft has been tracked during the complete forging process and is represented in the final shape. This thesis has been focused on the study of the connecting rod manufacturing process. Selection of material, shape, and manufacturing process. If you blast them or touch them with a file, or drop the rod onto the floor, you ruin the mirrorimage mating surfaces, and the rod becomes worthless. Every vehicle that uses an internal combustion engine requires at least one connecting rod. Together with the crank, it forms a simple mechanism that converts reciprocating motion into rotating motion. The design was modified slightly from the existing forging. A connecting rod may also convert rotating motion into reciprocating motion, its. Connecting rod made by steel forging will greatly achieve high performance applications. In a 1993 study comparing cast malleable iron connecting rods and ductile iron connecting rods, ductile iron connecting rods outperformed the malleable iron connecting rods in pushpull fatigue tests. The results of the analytical vector approach have been enumerated in this. Forged connecting rods creates a link between various mechanisms.
1146 859 551 654 630 1311 388 882 24 1059 838 967 1223 404 115 752 675 130 252 1564 203 601 84 332 621 551 1408 352 559 1119 1108 347