Medical Centrifuge Rotor, 17-4PH Stainless Steel, 38 lbs.


Dan Bizzarro and Bill Jordan went


to work at BIMAC while still in college, and Roger Reedy joined BIMAC in 1973. These three took ownership of the company in 1986. In the early 1980’s, BIMAC added


an investment casting operation, which grew rapidly. After a facility expansion was completed in 1981, a non- destructive testing facility was added, providing radiography, penetrant, and magnetic particle inspection services. A third expansion added a machining facility with in-house tooling for completely machined castings. Currently


in the 2020s, BIMAC


has an innovative “Rapid Prototyping” capability, a cutting-edge technology that distinguishes BIMAC from other foundries. Rapid Prototyping (RP) is a general term given to a host of related additive


manufacturing technologies


and processes, including 3-D printing and powder binder jetting technology, and is used to generate castings from 3D CAD data sources. This technology allows BIMAC to make pattern-less castings, dramatically cutting lead- time and cost of castings made from traditional investment tooling. Thanks to today’s RP technology, castings can be made with any geometric complexity


Industrial Impellor, 3-D printed pattern


or intricacy, and without the need for elaborate tooling, cores, or core boxes. Rapid


Prototyping is used to


produce patterns in a short timeframe to test a design or scale up processes before moving forward with large scale investment tooling. 3D printed sand molds are used in place of low run traditional


sand castings


Aircraft Fueling Nozzle, Aluminum Bronze, 1.4 lbs.


a 3D object is printed. The resulting layers are chemically fused together in a process resulting in PMMA poly (methyl methacrylate), also known as plexiglass. PMMA patterns are strong, resistant to warpage, and dimensionally sound. In 2017, BIMAC Precision


that would


otherwise require a cope and drag pattern. This process is ideal for scale up and aftermarket applications. It is also used to create single replacement parts for machinery that is out of production. RP impellers are commonly 3D cast to get pumps up and running quickly in oil fields.


3D Printing is the fastest of all


rapid prototyping methods, offering advantages of speedy fabrication and lower material cost.


BIMAC has the


capability to produce 3D printed castings up to 150 pounds in our investment process, and 300 lbs. from 3D printed sand molds.


investment process used whereby a layer of fine granular plastic is laid down in a build bed and details are jetted 2D in incremental layers until


Typically, lead-time is 5


weeks compared to tooling lead time of 12 weeks. Powder Binder Jetting is the 3D


Castings was acquired by Ventoux Industrial


firm that focuses on building strong manufacturing


Holdings, a private companies


throughout


the United States. With BIMAC’s 60th anniversary


approaching, our goal is to continue the long legacy of providing high- quality castings to customers for years to come. We plan to immediately invest in additional capabilities and manpower, upgrading our wax injection equipment to


improve throughput to speed


processing customer orders and shorten lead-time. With close proximity of colleges and universities such as Wright State University, University of Dayton, University of Cincinnati, and Sinclair College, we have started an internship program to bring in Engineering and Materials Science talent to the company. BIMAC will continue operating in Dayton, OH and is excited about adding more jobs to this vibrant business community.


equity


Right: Industrial, Pressure Control Box, 4140 Alloy Steel, 2.9 lbs.


Left: Industrial, Cutter Head, 4140 Alloy Steel, 3.4 lbs.


August 2021 ❘ 25 ®


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