Tag Archives: CentralMM

Selecting Ship Repair Services Based on Service Quality and Skills


In the maritime industry, finding a CNC machine shop that can supply top quality, reliable, and fast services at competitive prices can be a tough affair. Fortunately, good ship repair services do exist. The problem, however, is identifying a shop that can deliver what it actually promises.


Many shops claim to offer great services, yet most of them do not have consistency in the quality of parts they offer. Great quality means that when you place an order for parts, you get them within the specified tolerances in terms of inner and outer diameter, hole sizes, and other shape specifications. The maritime industry requires very high standards given that there cannot be any part that compromises the quality of the entire assembly. If one faulty part goes into an assembly of 100 components, for instance, the ship could be rendered defective.

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Tools of the Trade in a CNC Machine Shop

In the old days, metal fabrication was done entirely by hand. As designs for ships, pipelines, skyscrapers, and the like became more complex over the years, machines were built to perform the job more efficiently. Today, metal fabrication usually occurs at a machine shop that employs a computer numerical control, or CNC, system. Engineers and builders alike can expect such a facility to utilize at least some of the tools discussed below.
Plasma cutters are primarily used for cutting very thick materials, especially those that are used to make vents and ducts. However, materials that are more prone to heat damage may be cut using a water jet cutter instead. This machine uses a stream of highly-pressurized water, sometimes mixed with aluminum oxide, to cut a variety of materials. Some substances are impervious to this method, however, so the use of this machine is highly selective. Both the plasma cutter and water jet cutter utilize a software program to make precision cuts.
Machine drills are employed to bore holes on materials. As with the cutting tools, CNC drills use computer software to control specifications, such as depth, retraction, and feed rate. A lathe, on the other hand, is used to secure a material in place while trimming off excess material to ensure a perfect fit. This equipment may also make use of cutting fluid to serve as lubricant, as well as to remove debris. CNC lathes are typically used in making crankshafts and camshafts for ship engines.

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Categories of Industrial Pumps

There are many industrial pumps in use today, but they can basically be grouped under two categories: centrifugal and positive displacement (PD) pumps. A look inside each type will help describe their differences better. For starters, centrifugal pumps have one or more impellers while PD pumps don’t.


Centrifugal pumps, the more common type of pump, use the impeller to increase the flow rate or velocity of the liquid. Think of impellers as the supersized version of chopping blades in a blender. The liquid then moves from the impeller to the diffuser, which transforms the liquid’s velocity into pressure, which then powers the liquid’s flow through the process. This pump type is used in many industrial applications that require thin liquids to flow at high speed, such as in plastic and cast iron manufacturing.


PD pumps, on the other hand, have rotary or reciprocating parts in place of impellers. Widely used for transporting more viscous liquids, PD pumps act like a car engine, applying enormous pressure to the liquid to keep it moving. While the pressure comes at the price of flow velocity, thicker liquids generally do not need to be transported as fast as water.


Industrial pumps can also be categorized according to the operation they support or the type of liquid they carry, among others. Cryogenic pumps, for example, are a type of centrifugal pump designed to tolerate low temperature conditions needed by cryogenic liquids. Concrete pumps are a type of PD pump designed to transport viscous concrete.

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Why Repair Shops Need a CNC Machine Shop

Working with a CNC machining company goes a long way, especially for repair industries. In fixing equipment like elevators and manufacturing machines, some mechanical parts may have to be replaced or repaired. Mechanical parts may not always be available, and having your own fabricating machines may be expensive. In cases like these, a CNC machining expert can invaluably offer solutions


Custom Design

CAD (computer-aided design) is used to generate the numerical data entered into CNC machines. Through CAD, exact or custom parts can be created, modified, and optimized to suit your repair project. This is especially helpful if the spare part you need is no longer available or if the part needs to be customized to match your client’s equipment.


Accurate Manufacture

CNC machines will apply tools like lasers, mills, and cutters to achieve the manufacturing instructions entered through CAM (computer-aided manufacture) programs. The process yields highly precise results, as the tools operate according to the specifications entered into the CNC machines. In contrast, conventional human-controlled machines may produce variable outcomes.


Fast Production

A reputable CNC machine shop can provide your ordered or customized parts faster than conventional machine shops or suppliers. Usually, CNC companies have inventories of plate and bar materials like carbon steel, stainless steel, and several metal alloys, which allow them to start on a project at any given time. The result is a faster turnaround time for your needed parts or components, compared to waiting for an overseas shipment, or an inventory replenishment from parts manufacturers.

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Maintaining the Efficiency of Industrial Systems

The water and electricity you use at home come from distant plants through networks of large pipes and machines. If any of those system components breaks down, you can expect a service disruption, which you’ve probably experienced at least once. Fixing the system and keeping it up and running efficiently are the tasks of mechanics and millwrights.


To avoid these service interruptions, the provider must perform three crucial tasks regularly—evaluation, deciding between repair and replacement, and adhering to a business continuity program. Evaluation is extremely important, as it reveals any need to replace components and/or the necessity of a system update.


By evaluating each area in the system, workplace accidents can be avoided. Parts, components, equipment, and any other material essential in the operations of a service will be assessed against given standards. If any of these are found to create risks on both employees and the system’s functionality, it would be the job of asset managers to decide between repairing and replacing the defective elements.


Either way, impacts on the environment may be expected, and it falls on asset managers to find ways to mitigate these impacts. For best results, industrial plants entrust their systems to millwright services who are adept at working with heavy-duty equipment, and can thus be expected to deliver the needed results.

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CNC Machine: An Introduction

Many machines that are still in use today are actually those that underwent several re-inventions through the years. A good example is the sewing machine. This device’s origin is not all that clear, but some historical accounts say that the first real sewing machine was invented by Englishman Thomas Saint back in the late 1700s.

Saint’s sewing machine barely resembles the one you are familiar with today, but both were produced based on the same purpose: to eliminate the need for hand-sewing and therefore establish efficiency and higher productivity. Today’s CNC machines work around the same purpose as well—the difference is that these machines work on a computer numerical control (CNC) and therefore don’t require human assistance. Continue reading

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