Overview of Babbitting

Babbitting is a metal alloy coating that goes on a base metal to protect it from wear. Typically, the Babbitting process is used on investment castings, which are made of cast iron. The challenge is that investment casting is costly to produce. The Babbitting process helps to protect the bearing surface of the casting giving it an extended life span. In addition, the cost to replace or repair the casting wear surface is significantly less.

Named after Isaac Babbitt, the patented Babbitting process has been used throughout North America for more than 150 years. Compared to white metals, Babbitt metals are more widely known. These metals primarily consist of tin alloys that are hardened with antimony, copper, and lead alloys that are hardened with antimony and tin. In some instances, lead alloys also contain arsenic.

As part of the Babbitting process, the relatively soft bearing material bonds to a much stronger base metal, giving it support. The exact form can be a half-round mild steel bushing or pressing, an iron or bronze casting, or a mild strip of steel unwound from a coil.

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Contact Details:

Canada Metal North America

8271 Lafrenaie, Montreal,

Quebec , Canada

H1P 2B1

Phone No: 1 800 363-7110

Email: contact@canadametal.com

The Right Lead Filling Company Produces Precise Results

Lead filling is a process in which lead is introduced into a container designed to contain radioactivity and/or store radioactive materials. Depending upon the container’s geometry, the lead application process can be carried out in various ways, including lining with sheet lead, lead bricks and casting molten lead.

Canada Metal is a leader in this field and its expertise is sought from the design phase through completion to ensure the feasibility and methodology of the lead filling operation.

A prime example of the company’s expertise was demonstrated when it was asked to fill several (18) vessels of different configurations with lead. Upon completion, the vessels were to be RT tested for porosity.

Two of the vessels required approximately 43,000 lbs. of lead shielding each, using a continuous pour. Canada Metal accomplished this, with zero porosity in the 7+ inches of lead filling.

In another example, the company was tasked to provide lead shielding, with the additional assurance of adhesion of the lead to the base metals of at least 50% of the “wetted surface” area. Complicating matters further, two metals were involved, each having distinct heat coefficient transfer properties. After some experimentation, Canada Metal was able to guarantee adhesion to a minimum of 75% of the wetted surface, as confirmed by Ultrasound Testing (UT).

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Contact Details:
Canada Metal North America
8271 Lafrenaie, Montreal,
Quebec , Canada
H1P 2B1
Phone No: 1 800 363-7110
Email: contact@canadametal.com