Engineering & Manufacturing

Manufacturing & Engineering Support Services

EMD's manufacturing operations are qualified to military standards and are among the most broad-based in the world. Manufacturing operations personnel consist of master and journey level machinists, machine operators, electrical coil winders, welders and braziers, assemblers and maintenance technicians.

EMD currently machines a wide range of components to tolerances as small as .0001 inches. High-speed rotors are regularly precisely machined at EMD. We routinely welds materials ranging from 0.018-inch to 8 inches thick and is a world leader in the manufacture, assembly and welding of thin, high-reliability stator and rotor cans, as well as other critical application pressure boundary components.

EMD's manufacturing operations are supported by a full complement of manufacturing engineers, material and process engineers, numerical control programmers, tool designers, quality engineers, inspectors and cognizant design/analytical engineers. Manufacturing and engineering services include:

  • Assembly, Winding, Machining & Welding
  • Engineered Solutions
  • Spare Parts
  • Repair and Refurbishment

Assembly

EMD has a clean room assembly facility per military standards and crane capacity up to 200 tons. Assembly involves the application of mechanical manipulation techniques to individual machined and or fabricated components resulting in a desired configuration per engineering drawing that yields subassemblies that are subsequently configured into a final major assembly yielding a finished pump, propulsor, motor or generator product.

Inspection

EMD's inspection capabilities include personnel trained and qualified to stringent military and ASME Code criteria. Inspection processes include both dimensional and nondestructive testing methodologies. Dimensional inspections are done using a comprehensive inventory of standard inspection equipment, various automated coordinate measuring machines and other equipment that are calibrated and capable of determining dimensional features from 10 -6 inches. The nondestructive inspection processes are visual examination, liquid penetrate, magnetic particle, radiographic and ultrasonic testing.

Engineered Solutions

EMD's engineered services is provided by more than a hundred engineers who's disciplines include electrical engineering, mechanical engineering, advanced hydraulics and power electronics, with a full complement of design drafters.

Electrical engineering

For many of the EMD rotating machinery applications, the electric design of highly reliable, low vibration, efficient motors and generators is paramount. EMD has consequently developed a strong capability in the electric design of such machinery.

This expertise includes finite element electromagnetic flux field modeling and performance prediction, insulation design and qualification, electrical performance test design and testing, overall coupled electro-mechanical system simulation modeling and analysis and manufacturing methods for implementing given electrical designs. Such capabilities include applications experience with a very wide class of electrical machines that include canned motor designs, induction and synchronous motors, and permanent magnet machines. The experience base includes designs that operate at a variety of frequencies and speeds as high as 17,500 rpm.

Mechanical engineering

EMD has developed strong capabilities in mechanical design, analysis and test of rotating machinery to support the demanding needs of its customers. These capabilities include expertise in mechanics of materials, efficient feature design, rotor-dynamic design and analysis, bearing design, finite element structural and fatigue analysis, elastic-plastic analysis, vibration and noise analysis, and structural acoustics modeling and analysis.

EMD's expertise is coupled with extensive real-world experience and feedback from manufacturing, test and field performance that drives realistic, highly reliable, robust product designs. EMD has also developed a rigorous new product development process that provides a standardized map of the activities necessary to bring an idea from a concept to a real world product.

Hydraulic

EMD has developed advanced capabilities in the design of high efficiency hydraulics centrifugal, mixed flow and axial flow to meet the pumping needs of its customers. Computational fluid dynamics tools are routinely used and specific methods have been developed to rapidly interpret and screen designs to reach optimum configurations in minimal time. In some cases, rapid prototyping is utilized for construction of impellers and diffusers for test purposes.

A full range of test equipment and capabilities have been developed including air test screening, laser doppler velocimetry, acoustic hydrophone measurement and correlation techniques to evaluate and confirm performance of designs. A full complement of test loops exist to facilitate needed performance tests and evaluations. Specific techniques and methods have been developed to ensure that EMD designs produce low noise for applications where this is a design criterion.

Power electronics

EMD has developed expertise in the design of innovative electronics for handling high power required for the operation and control of motor pumping and generator systems. EMD's staff includes designers of power conversion devices, voltage regulators, inverters, motor drives and control systems for power producing and power consuming machinery. EMD's staff is known for innovative designs that achieve solutions to practical problems.

EMD's power electronics capabilities include expertise in techniques for producing devices that have advanced performance characteristics and the demonstrated ability to model and simulate the behavior of complex systems for both steady state and transient conditions to ensure adequacy of designs prior to manufacture.

EMD's Navy spare parts and service

EMD specializes in Naval Electric Machinery refurbishments and spare parts for shipbuilders supporting the Navy. Whether it's a corrosion-resistant bolt, a journal bearing or a complete overhaul of an electric machine, Navy supply and repair facilities can rely on for dependable parts service to support day-to-day requirements, emergency needs, or advanced planning for scheduled outages.

OEM of Navy spare parts

EMD is the original equipment manufacturer on the following products, EMD's Navy Spare Parts and Service Organization is committed to providing the highest level of service to ensure that our customers needs are met-on-time and on budget.

  • Nimitz Class Ship Service Generators and Motor Generator Sets
  • Kittyhawk Class Ship Service Generators
  • Enterprise Class Emergency Diesel Generators
  • Ohio Class Ship Service Generators
  • Seawolf Secondary Propulsion Units
  • Virginia Class Ship Service Generators and Secondary Propulsion Units
  • Ford Class Ship Service Generators and Electro Magnetic Launch System
  • DD1000 Main Propulsion Generators and Propulsion Motors

EMD continues its long-term commitment to servicing shipbuilders with the required spare parts and services necessary to support shipboard construction, overhaul and scheduled maintenance. We have over 50 years experience in the design and manufacture of key Navy pumps, motors, generators, and propulsion equipment.

EMD meets all Navy and Commercial requirements for all of your products or services, including:

  • ISO 9001:2000 Certification with Quality Programs compliant with Mil-I-45208 and Mil-Q-9858
  • Product Military specifications include Mil-G-3124, Mil-M-17060, Mil-M-2130
  • Government approved cost accounting system
  • ASME Boiler & Pressure Vessel Section III N and NPT Stamp Certification

Repair and Refurbishment

Meeting naval and commercial requirements

EMD continues its long-term commitment to servicing shipbuilders and commercial nuclear utilities with the required spare parts and services necessary to support shipboard construction, overhaul and scheduled maintenance. We have over 50 years experience in the design and manufacture of key Navy and utility pumps, motors, generators, and propulsion equipment.

Meeting all Navy product/service requirements

EMD meets all Navy and utility requirements for all of your products or services, including:

  • ISO 9001:2000 Certification with Quality Programs compliant with Mil-I-45208 and Mil-Q-9858
  • Product Military specifications include Mil-G-3124, Mil-M-17060, Mil-M-2130
  • Government approved cost accounting system
  • ASME Boiler & Pressure Vessel Section III N and NPT Stamp Certification

Motor and generator winding

EMD employees have expertise in the winding of all electrical machines and provide resistance, induction and torch blazing to military standards.

Additionally, EMD provides electrical testing, vacuum impregnation and sand potting insulation.

Machining

EMD has 70 machines with 29 NC machines. Additionally, EMD has the capability to super finish rotor journals and utilize manufacturing/assembly cells for key products.

Welding

EMD welders can provide a unique level of expertise. Experience includes working with carbon steel, low and high alloy, stainless, nickel and copper base.

Types of welding:

  • Shielded Metal Arc
  • Gas Tungsten Arc (manual, automatic, hot wire)
  • Gas Metal Arc
  • Plasma Arc (manual, automatic)
  • Submerged Arc Can Fabrication

Special Application Welding:

  • Can Fabrication
  • Dissimilar Metal Welding
  • Narrow Groove Welding
  • Buttering, Cladding

For more details please Contact Us.