Why use an OEM for centrifugal pump repairs?

Centrifugal pump OEMs declare they provide better components, service, response and value than aftermarket service firms, but that isn’t all the time the case.
Until the early Nineteen Nineties, OEM restore centers worked completely on their merchandise, espousing the mantra, “We know our merchandise finest.” During the ‘90s, a decrease in new product gross sales caused OEMs to change their story and boast that their retailers might work on any brand of centrifugal pump. Suddenly, their particular product information utilized to all centrifugal pumps.
According to the web journal, World Pumps, six of the major U.S. centrifugal pump manufacturers of the 1980s have been consolidated into one, Flowserve. Many U.S. legacy manufacturers are still manufactured by Flowserve. During the numerous mergers and acquisitions, the U.S. Department of Justice compelled the sale of some manufacturers to other producers. Products had been disassociated from their designers.
Before the nice consolidation, each OEM had a chief engineer and several product designers who employed a holistic design course of, which thought-about the whole product, the interaction of its various components, the user’s application and business specs. When a consumer had a big problem, the chief engineer was referred to as to sort it out. The classes discovered had been included into future designs and centrifugal pumps advanced over a few years.
Members only , API 610 specifically, were developed by users to simplify procurement of high quality tools and to enhance pump reliability. It is a compendium of users’ experiences, which are often expensive experiences. API 610 captures solutions to common centrifugal pump design issues and best-in-class design options.
Computers loaded with superb software have democratized engineering. When I was a design engineering manager at Pacific Pumps, I had physicists, mathematicians, metallurgists, engineers, drafters, doc managers and a large staff of people to create and distribute microfilm. In the early 1980s, we added a Fortran programmer to our workers. Today, that expertise and tons of ability units are on my desktop. Integral calculus is completed with a click on in MathCAD. Finite factor analysis of structures, strain vessels and even shaft keyways are built-in into our stable modelers. Hydraulic part design software feeds computational fluid dynamics analysis applications, lowering hydraulic design danger. Rotordynamic analysis software coupled with structural analysis tools solves — and hopefully prevents — vibration issues.
3D optical scanners and laser trackers provide accurate fashions of complex shapes. Conhagen can duplicate any pump case in one afternoon and enhance it by the following week. It can produce a new case or impeller casting in five or six weeks. The development of patternless molds — 3D printed sand molds — was the game changer for Conhagen, yielding excessive fidelity, reasonable value and fast delivery in most any metallic.
Conhagen has developed from a restore shop to a producer that designs new centrifugal pumps or modifies existing pumps for specific functions. Unique designs present the required hydraulic performance and mechanical robustness to reduce the entire price of possession. Two examples of case replacements are included on this editorial — a four stage, axial split, boiler feed pump’s carbon steel case was changed with a CA6NM casting. The second example is a single stage between a bearings pump that suffered rotor dynamics issues. Conhagen designed and manufactured a brand new case, shortening the gap between bearings from 37 3/4 inches to 30 5/8 inches.
Conhagen has been in enterprise for 80 years. Its merchandise embody detailed engineering calculations, manufacturing drawings, installation, operation and upkeep manuals, a one-year operation guarantee and help for administration of change stories. It is big enough to be responsible, but sufficiently small to be responsive.
Share

Leave a Comment