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August 8, 2018
Aluminum Metal and Coatings

Aluminum Metal and Coatings

Aluminum castings have been used in various industrial application for nearly two centuries. As a material, aluminum has inherent qualities that make it a highly desirable material for use in mechanical parts. Aluminum is a lightweight, easily machinable metal with good thermal and electrical conductivity, Aluminum also has several drawbacks. It quickly oxidizes and wears rapidly. Because aluminum is relatively soft, it is susceptible to dings, scratches and galling. Adding a protective coating is one means of overcoming the negative aspects of aluminum, although each coating option comes with its own consequences. The options for coating aluminum include: 1] Anodizing 2] Plating – Nickel, Gold and Chrome, 3] Chemical Films 4] Powder Coating   Anodizing Anodizing is a process by which the surface of the aluminum is artificially oxidized to create a protective coating. Oxidized aluminum is extremely durable. Chemically, it is inert, as demonstrated by its relationship to alternative forms of the […]
June 22, 2018
Zinc Castings Case Study

MES Zinc Castings Case Study

Design Benefits: The process of zinc die casting involves a time-proven technology. As a material, zinc is extremely fluid, rendering it very useful for die casting. Zinc also offers excellent strength (~32,000 psi) compared to conventional aluminum 380 and magnesium (~23,000 psi). Specific grades of zinc produce castings with yield strengths in excess of 57,000 psi. While standard zinc castings can offer Brinell hardness of 82 HB compared to 80 HB for aluminum and 63 HB for magnesium, there are grades of zinc that can produce alloys in the range of 120 HB resistance, an increase in hardness of approximately 50 percent. Depending on the grade used, zinc alloys offer high strength with a high degree of creep resistance. Process Benefits: Because zinc is the most fluid of all die casting alloys, zinc die castings can be made thinner than with other metal alloys. Their shapes can be more intricate […]
May 7, 2018
Ephesus case study

High-Performance Engineered Light Housing

On February 4, 2018, all eyes turned to U.S. Bank Stadium, the location of Super Bowl LII. The stadium, which is the home of the Minnesota Vikings, also hosts a wide range of national and international events throughout the year. With its see-through roof and angular design, many people believe the 1.75 million-square-foot venue resembles a Viking warship. Highly recognizable in the Minneapolis landscape, the structure represents a new era in stadium construction. CHALLENGE Among the countless visitors and television viewers who witnessed this spectacle of sports, very few paid attention to the lighting that made it possible. The stadium is outfitted with lights from Ephesus Lighting, makers of high-performance LED lighting solutions. MES, a full-service provider of global manufacturing and supply chain services, provides engineering solutions for companies such as Ephesus Lighting, a division of Eaton. In this particular case, engineers had conceived a high-performance housing requiring extensive ribs […]
January 31, 2018

Iron Casting – Terex Canica Model 2000

Terex Canica 2000 is a crushing impeller which is used to crush items into smaller sizes. Rocks, concrete chunks, and other hard items enter Canica via the feed tube. This application needed very specific engineering specifications: a] Iron casting with precise Cr control which contributes to the feed tubes high abrasion resistance and durability for this type of application. In fact, the main reason customer sourced this part from MES is because the previous supplier could not control Cr within 2%. b] Hardness of 53HRC + 10 HRC in as cast condition is also difficult to achieve without causing cracks. The process must have good and controlled cooling cycle to achieve the required hardness c] Paint – Application required coating which had to import from the US into China for prototypes but would be available for production. MES is utilizing its network of trading and supply chain capabilities to ensure […]
October 11, 2017
Impeller Blade Casting

New Application: Impeller Blade Casting

MES Inc. was proud to deliver, this past quarter, a one of a kind impeller blade castings for axial fans. Material was carefully chosen by the customer because of excellent strength properties at elevated temperatures. Aluminum C355: Offers excellent castability, pressure tightness and resistance to hot cracking. Has optimal fluidity and solidification shrinkage tendencies. Allows for excellent welding strengths (although in the specific case of this application did not allow any welding). Polished finishes can be worthy of excellent engineered components which customers appreciate. These blades were designed and manufactured for axial fans with end application in underground and above-ground mining and power industries. Material was cast using high vacuum melting casting furnace and high tilt automatic equipment. All parts were then X-ray tested per ASTM E155 with expectation to meet Level 2 near the shank of the blade and Level 4 in other areas. Parts also went through machining […]
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