Browse Topic: Casting
ABSTRACT Today’s combat vehicle designs are largely constrained by traditional manufacturing processes, such as machining, welding, casting, and forging. Recent advancements in 3D-Printing technology offer tremendous potential to provide economical, optimized components by eliminating fundamental process limitations. The ability to re-design suitable components for 3D-printing has potential to significantly reduce cost, weight, and lead-time in a variety of Defense & Aerospace applications. 3D-printing will not completely replace traditional processes, but instead represents a new tool in our toolbox - from both a design and a manufacturing standpoint
This specification covers a cast leaded-tin bronze in the form of sealing rings (see 8.5
This specification covers an aluminum bronze alloy in the form of sand castings (see 8.5
This specification covers a magnesium alloy in the form of sand castings
This specification defines the requirements for in-process correction of foundry discontinuities by manual welding of castings
Ultrahigh-strength steels are traditionally defined as those steels with a minimum yield strength of approximately 1380 MPa. Notable examples of steels in this category include AISI 4130, AISI 4140, and AISI 4340. In many cases, maximizing the performance of these alloys requires a rather complex approach that involves a series of tempering, annealing, or stress-relieving treatments. As a result, they are produced using a variety of traditional processing methods such as casting, rolling, extrusion, or forging. These traditional methods — combined with the ultrahigh strength of the steels — often meant that the production of complex, near-net shape parts of high quality was quite difficult. In addition, these production methods often entailed repetitive treatments or long production cycles, both of which resulted in elevated production costs
This specification establishes nondestructive testing methods, sampling frequency, and acceptance criteria for the inspection of metal castings
This specification covers an aluminum alloy (see 8.5) in the form of centrifugal castings
Employing the stir casting process, a unique hybrid composites were fabricated, using A356 as the matrix and reinforced with ZrSiO4 and TiB2 particulates. The produced specimens were initially in their as-cast state. Following that, the reinforcement particle concentrations were changed 2 and 4 weight percentages (wt%) of ZrSiO4 and keeping a constant 6 wt% of TiB2. Three samples were exposed to dry sliding conditions at room temperature using a tribometer. Two applied loads of magnitude 10N and 50N and a sliding velocity of 1m/s and 2m/s were selected as testing parameters. After measuring the wear rate (WR) and the coefficient of friction (COF), the worn-out pin surfaces were examined using scanning electron microscopy (SEM). The results of the study indicated that, under different sliding parametric conditions, the hybrid composite sample with a weight percentage of A356, specifically with 4% ZrSiO4 and 6% TiB2, displayed a minimal WR and a higher COF compared with the remaining
This specification covers a low-alloy steel in the form of investment castings
This specification covers a corrosion and heat-resistant nickel alloy in the form of investment castings
This specification covers a corrosion-resistant steel in the form of sand or centrifugal castings
This specification covers a corrosion and heat-resistant steel in the form of investment castings
This specification covers a corrosion and heat-resistant nickel alloy in the form of investment castings
This specification covers a corrosion and heat-resistant steel in the form of investment castings
This specification covers a corrosion and heat-resistant steel in the form of investment castings
This specification covers a corrosion and heat-resistant steel in the form of investment castings
This specification covers titanium Ti 6Al-4V alloy in the form of investment castings
This SAE Recommended Practice pertains to blast cleaning and shot peening and provides for standard cast shot and grit size numbers. For shot, this number corresponds with the opening of the nominal test sieve, in ten thousandths of inches1, preceded by an S. For grit, this number corresponds with the sieve designation of the nominal test sieve with the prefix G added. These sieves are in accordance with ASTM E11. The accompanying shot and grit classifications and size designations were formulated by representatives of shot and grit suppliers, equipment manufacturers, and automotive users
Casting is unique manufacturing processes for variety of reasons. Perhaps the most important reason is, it can produce complex components in any metal and weight ranging from grams to several tons. It is age old technology used to produce complex shapes and for mass production. The defects produced specifically inside the component, during casting process are difficult to identify. These defects in turn become cause of component failure in operating condition. FEA tools gives better understanding of process and can predict any defect produced in the casting process. It also helps to optimize entire process. Thus, use of software are becoming necessity in the industry to avoid rejections / last minute surprise. This paper describes use of simulation to predict casting defects accurately in existing casting component. This provides in depth understanding of existing casting process. With understanding of existing process defects, suitable modifications in the casting design and process
This specification covers steel cleanliness requirements in inch/pound units for aircraft-quality, ferromagnetic, hardenable, corrosion-resistant steels as determined by magnetic particle inspection methods. This specification contains sampling, specimen preparation, and inspection procedures and cleanliness rating criteria (see 8.2
This specification covers a titanium alloy in the forms of investment castings having four grades of permissible discontinuities
This specification covers a corrosion and heat-resistant, vacuum melted, nickel alloy in the form of investment castings
This specification covers a corrosion and heat-resistant, air-melted, nickel alloy in the form of investment castings
A driveline differential gear housing or diff-case is the heaviest component of a driveline that rotates at high velocities. core shift during diff-case casting is a major source of imbalance as casting cores can never be placed at the exact intended location. Core shift in the present case is defined as combination of pure translation along the parting plane and tilting about two orthogonal axes. Given the ranges of variation of these shift parameters, large numbers of random sampling of these variations are generated through Monte Carlo method where normal distribution of each of the core shift parameters is assumed. Static unbalance values of the diff-case from each of the instances of core shift is calculated using Boolean operation in MSC Adams View and a nonlinear data set is created. Next, a statistical model is created based on a neutral network-based fitting method to appropriately represent the set. The validity of the model is checked based on specific core shift cases to
A gigantic furnace slowly started spinning underneath the stands of Arizona Stadium at the University of Arizona in March 2021. Fire-engine red, massive in size and resembling a sci-fi version of a Dutch oven, the furnace is the only one of its kind, and its sole purpose is to produce the world’s biggest and most advanced telescope mirrors
This specification covers a corrosion resistant steel in the form of investment castings
This SAE Aerospace Information Report (AIR) is intended to document and provide access to information obtained by an industry survey. It summarizes and documents data regarding possible alternatives to the use of cadmium plating on general connectors and connector accessories typically used in aerospace and military defense electrical interconnect systems
This specification covers a zinc alloy in the form of die castings
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