Category Archives: Services

Hi-Tek Manufacturing’s Precision Grinding is Unmatched!

There are numerous types of grinding techniques used to produce specific shapes and finishes on a variety of both metallic and non-metallic components.  Specializing in the manufacture of hot gas path turbine engine parts, Hi-Tek Manufacturing has developed unparalleled grinding technologies in the areas of continuous dress creep feed and plated wheel CBN profile grinding.

The company’s grinding equipment includes a continuous dress creep feed that operates up to a staggering100 HP with a 20″ wheel, 4-axis continuous dress creep feed, 5-axis CBN, 1 & 2 spindle cylindrical verticals, and CNC surface grinders.

Creep feed grinding is similar to a milling operation where large stock removal is possible to exacting shapes and profiles.  Various types of abrasive wheels are used from aluminum oxide to ceramic composite.  By employing diamond dress rolls to continuously dress the wheel surface, precise shapes are achieved by the clean cutting abrasive wheel.

With CBN (cubic boron nitride) plated wheels, radial shapes and features can be easily produced on intricate turbine engine nozzles, blades, and other components.  Sometimes referred to as “superabrasive” grinding, Hi-Tek Manufacturing utilizes a number of these CNC 5-axis grinding machines on a variety of parts.

A key to the successful grinding by Hi-Tek Manufacturing is the use of central fluid filtration systems.  These filters provide water soluble coolant for creep feed grinders and grinding oil to the CBN or superabrasive grinding operations.  Each machine receives fluid to the grinding or cutting zone at the same concentration, temperature, pressure, and cleanliness to ensure uniformity in grinding operations across all machines.

Contact Hi-Tek today to learn more about the high quality grinding services provided by an ISO 9001:2008 certified company.

CNC Turning Technology- Hi-Tek is on the “Cutting” Edge!

The average lay-person is not well informed as to the great strides made in the latest computerized milling capabilities. A case in point is CNC turning, which is a form of machining in which a sharply pointed cutting tool is placed parallel to the surface of a material that is simultaneously being rotated. The rotation (or “turning”) is executed by a lathe that securely spins the part being machined. This process allows for one single-point tool to cut, remove and shape the material being machined into a myriad of parts.

The beauty of “turning” is in its ability to create a myriad of complex shapes. Examples include shapes that are tapered and contoured, threaded and filleted to name just a few. Once upon a time, (not too long ago), this process required the skilled and steady hand of a trained operator who applied the cutting tool manually. Now, with computer numerical controlled technology or “CNC” computers, automation performs these tasks resulting in near perfect creations that cut waste, errors and labor costs.

Hi-Tek Manufacturing has adopted the latest in technology to ensure the best in precision CNC turning services and the company capably handles a variety of parts of various sizes and materials to meet the most exacting of standards demanded by customers. Hi-Tek’s vertical and horizontal turning centers have 2, 3, and 4-axis capabilities offering the finest in live tooling. The in-house equipment includes features such as large swing turning, central cooling systems, automatic tool changers, tool probing and more.

At Hi-Tek, turning requirements can be met beyond expectation with such services as contour, taper or straight turning and boring, and also external or internal threading applications. Hi-Tek also excels in the utilization of high-temperature aerospace super alloys, cobalt and nickel based metals and alloy forgings.

Give Hi-Tek a call today to learn more about reaping the benefits of the very highest standards in turning technology.

The Latest in Milling Technology- Hi-Tek Lives Up to its Name!

Should you not be familiar with this cutting-edge technology, CNC milling is a unique form of “computer numerical controlled” (or CNC) machining. This advanced form of milling is a machining process that performs both drilling and cutting, (as do traditional cutting and drilling machines), but in this case there is sophisticated and highly accurate automation of the machine tools. All operations are undertaken by precisely programmed commands that are encoded into the machine’s computer memory. In other words, human error is greatly diminished as there is no longer any need for manual control utilizing hand wheels or levers. Even mechanically automated cams are vastly improved upon with this state-of-the-art equipment. With computer numerical controlled technology, computers, rather than people, perform the integral part of the process of milling control, resulting in fewer mistakes and savings on labor.

Hi-Tek Manufacturing is a prime example of a cutting-edge company that utilizes the most advanced tools and technologies, like CNC machining. And Hi-Tek provides their customers with the very best in the latest CNC milling services, even with large and complex parts having thin cross-sections. Equipment utilized includes 3, 4, and 5-axis vertical machining centers and 5-axis horizontal machining centers, all of which make Hi-Tek one of the most comprehensive milling service providers in the country!

Hi-Tek performs masterfully such tasks as drilling, boring, contouring and profiling, counter-boring, countersinking, reaming, and tapping and works with components up to 60″ long, 48″ wide and 44″ high so clients can be assured that what they need can indeed be provided. Hi-Tek works primarily with high-temperature aerospace super alloys, cobalt and nickel based metals, and single crystal and conventional castings. Contact Hi-Tek today to learn how they can help you to realize quality and quantity at competitive prices.

THE FUTURE OF HIGH POWER, HIGH CONSTRAINTS WELDING: THE FIBRE LASER

Welding is a process without which most of the modern world would be bereft of its technology and innovations. Everything from high rises to aerospace assemblies to vehicles and intricate medical devices make use of welding. It is an affordable, easy to leverage means by which structural integrity can be maintained and joints are provided with a degree of support to hold firm large structures.

Almost all forms of welding demand a continuous inflow of fuel to ensure a steady flame or arc and a high intensity of concentrated power to eliminate the probability of fusion defects. In particular CO2 welding results in low quality of the welded joints and splattering. In a bid to overcome these shortcomings of conventional processes, laser welding has emerged as a preferred choice. Nd:YAG in particular has been frequently leveraged in electronics, medical and fluid coupling industries.

THE ARRIVAL OF THE FIBRE LASER:

The latest trend in high power, high constraint welding is the use of fibre lasers. They consist of continuous wave (CW) or quasi-continuous wave (QCW) pump light sources coupled to rare earth metal doped optical fibres. The doping converts the light beam to a laser beam that is largely comprised of photons emitted due to spontaneous transitioning of electrons.

This output travels at a very fast pace through the fibre and is pulse shaped down to sub-millisecond resolution for defined spot welding. It is capable of joining very hard aerospace (Nickel and Titanium based) alloys with zero tolerance for cracks and porosity.

THE ADVANTAGES OF FIBRE LASERS:

Fibre lasers are catching on because they have a wide array of advantages recommending them over conventional options:

  • They have a very small wavelength of 1 um and thus a correspondingly high frequency. This allows for unprecedented power density.
  • Fibre lasers have high processing speeds and get the job done faster and more efficiently.
  • Since the output is delivered through an optical fibre, mirror manipulations are not needed and less power is lost through reflection and scattering.
  • Fibre lasers are brighter than their Nd: YAG counterparts and the beam can thus be shaped and focused with great accuracy to boost concentration.
  • Boasting better absorption by good conductors, fibre lasers offset their initial high investment with low operation and maintenance costs.
  • Last but not the least, fibre lasers can effortlessly weld dissimilar metals with the help of filler wires which allow for alignment of disparate pieces to provide an excellent join.

 

Hi-Tek Manufacturing has been a vanguard in Electrical Discharge Machining, Laser Processes, NC Milling, CNC Turning, CNC Grinding and Associated Process Support Services. It brings to the table high quality industrial fibre laser models which can easily revolutionize difficult welding under constrained (misalignment of pieces, danger of rapid oxidization of welded joints and so on) conditions. Call us at (513) 459-1094 to know more.