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As your Metals Partner, it is our goal to educate you on various casting processes. Feel free to browse around to learn more but if you have questions or need to submit an RFQ, please contact us. MetalTek International. Because You Demand More Than Metal.

4 Real Life Examples Of Solving A Heat, Wear, Or Corrosion Problem

Posted by Dave Olsen on 12/16/19 2:32 PM

The days when manufacturers had a host of technical experts on staff are past in many industries.  And this at a time when material choices are broader and product performance demands are higher than they have ever been.  So the situation will not get any easier. Here are just four real life examples where MetalTek International helped a customer's heat, wear, or corrosion problem.

If you have a question about alloy selection, if you manufacture products that operate in harsh corrosive, high wear, or extreme temperature environments, or if you are simply looking to improve product performance, contact MetalTek.

#1.) Bearium Solves Load and Friction Problems in Mobile Crawler
From the days of Apollo program through the Space Shuttle a heavy duty crawler has carried the enormous weight of space vehicles down the one-mile path to the launch pad. Early designs used to carry this load were subject to sudden catastrophic failures of the roller bearings, jeopardizing timing of the launches. The crawler went through an emergency redesign to replace the roller bearings with sleeve bearings manufactured using Bearium B-10, a high-lead bronze that is only available from MetalTek International. Designs using Bearium delivered acceptable performance in an application that would then feature much higher friction. Bearium is used in the space craft crawler application to this day.

#2.) Creating a “Memorial to Last a Lifetime”
Working with architects to create a “Memorial to Last a Lifetime” is no small task. Every step of program management is critical—from materials and engineering, to budget compliance, to execution. Initially, the Pentagon Memorial team approached MetalTek International about choosing the “right” alloy to last 150 years; as various materials were trialed and budgeted, the ultimate selection came down to a restricted-range 316LN (CF3MN-Mod) alloy that would meet the design requirements and still be producible to tolerances such that 184 Memorial Units, each weighing over half a ton and measuring over 12’ (4m) in length, would seem to be “identical.” Specialized tooling, processing and fixtures were developed, trialed, and modified against an aggressive timeline. In the end, MetalTek met the Vision, the Budget, and the Schedule.

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Topics: Alloy Selection, Corrosion Resistance, Wear, Casting Process, Conversion, High Heat

Material Applications: Corrosion Resistant Alloy Comparison Part: 2

Posted by Dave Olsen on 12/12/16 8:58 AM

 

Every material selection decision includes tradeoffs. Performance can come at a price.  But there is little sense in paying for capabilities that are not needed.  The following suggests a framework for selecting one of a family of corrosion-resistant materials from another.

Comparisons

Cost

Cost is rarely ignored, so it is helpful to compare certain corrosion-resistant alloys as multiples of cost of a generally recognized standard material, in this case 304 stainless. This analysis attempts to capture all-in cost including processing, and not just per-pound acquisition cost.

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Topics: Alloy Selection, Corrosion Resistance, Physical Properties, Mechanical Properties

Material Applications: High Temperature Corrosion

Posted by Dave Olsen on 9/6/16 4:23 PM

As the performance demands on metals tend to increase as temperature increases, so do the types of corrosive attacks to which the metal is likely to be subjected. When we think of significant industries and applications that are most likely to face the combined effects of high temperature with a corrosive environment significant ones come to mind:

  • Gas and Steam Turbines
  • Heat Treating
  • Mineral Processing
  • Chemical Processing
  • Pulp and Paper
  • Waste Incineration
  • Fossil Fuel Power Generation

High-temperature corrosion performance is a form of corrosion that does not require the presence of a liquid electrolyte. Some important forms of high-temperature corrosion to consider that often cause equipment problems are:

  • Ash/Salt Deposit Corrosion
  • Carburization
  • Halogen Corrosion
  • Metal Dusting
  • Molten Metal Corrosion
  • Molten Salt Corrosion
  • Nitridation
  • Oxidation
  • Sulfidation
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Topics: Alloy Selection, Corrosion Resistance, Physical Properties, Types Of Corrossion, Mechanical Properties

Material Applications: Alternative Corrosion Resistant Materials

Posted by Dave Olsen on 9/6/16 4:19 PM

Coatings of various types are often used to enhance corrosion resistance in metals when metallic properties like strength or durability are needed for the application. There are, of course, also non-metallic solutions often used to protect against corrosion.  As with most alternatives, there are advantages and disadvantages associated with each.

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Topics: Alloy Selection, Corrosion Resistance, Alternative Materials

Material Applications: Corrosion Resistant Alloy Comparison Part: 1

Posted by Dave Olsen on 9/6/16 3:27 PM

Every material selection decision includes tradeoffs. Performance can come at a price.  But there is little sense in paying for capabilities that are not needed.  The following suggests a framework for selecting one of a family of corrosion-resistant materials from another.

Read More

Topics: Alloy Selection, Corrosion Resistance, Physical Properties, Mechanical Properties

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