The Ultimate Buyer's Guide for Purchasing cold forging press

16 Dec.,2024

 

Advice on buying a Hydraulic press

JTknives said:

One thing to keep in mind when building/buying a press. Speed is king. Stay away from presses that use two stage pumps. The amount of force needed to move steel goes up exponentially as it starts to cool. So get in and out as fast as you can and you will need less tonnage.

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JT, I don't disagree with you that speed is king (if you have the experience and skill to utilize it), but for someone starting out, buying a press, there's no reason for them to avoid two-stage pump builds. We've talked about this before, the learning curve with a super fast press is much higher. The vast majority of damascus made by knifemakers (excluding the few big production suppliers) has been made using presses with two-stage pumps.

Do I like them? No. However, they work just fine for most people's needs, and the costs of buying an off-the-shelf, fast, single stage pump press, running with a single phase motor, was (is anybody actually offering one, now that Larry Langdon is gone?) significantly higher. I've taught tons of beginners on presses, and under no circumstances would I *ever* recommend a fast single stage press to one of them.

The only thing a fast single stage press does, is increase production speed, with an experienced operator. However, the rate at which a novice can destroy billets with a fast press, will be proportional. There's no practical difference otherwise. The end result, of either style, will be the same.


I'm only jumping in here, because you didn't really qualify your response, and it's clear from the OP that he's not going to build one; so you essentially told him to avoid pretty much every option available to him. I also think, and no offense intended, you're not considering what's practical for them, considering their needs, versus what you prefer (I agree with that preference also, but don't recommend it for most).





FWIW, the coal iron ones; even though the 16 ton doesn't list it, is clearly using a 2-stage pump, all the other listings mention it specifically. Frankly the base 16 ton one looks pretty weak to me. Notice the tiny ass round bar they're squishing in the promo video? Consider the 16+ at a minimum.

They do look nicely built. I agree with Don, Uncle Al's presses will do the job, but I'm not a huge fan of the design, the whole guide bar setup for the top dies is flimsy and has a lot of slop in it. I can vouch for the build quality of Tommy McNabb's presses; they are rigid and well thought out, with a small footprint. The bottom die moving up takes a little getting used to if you've used others where the top die moves, but you get the hang of it quickly. You may be concerned about the lower HP motor for the same tonnage, but Tommy uses real industrial Baldor motors that produce much more real actual HP/Torque than the so-called "5hp" import farm duty junk motors that many of the other presses use.

JT, I don't disagree with you that speed is king (if you have the experience and skill to utilize it), but for someone starting out, buying a press, there's no reason for them to avoid two-stage pump builds. We've talked about this before, the learning curve with a super fast press is much higher. The vast majority of damascus made by knifemakers (excluding the few big production suppliers) has been made using presses with two-stage pumps.Do I like them? No. However, they work just fine for most people's needs, and the costs of buying an off-the-shelf, fast, single stage pump press, running with a single phase motor, was (is anybody actually offering one, now that Larry Langdon is gone?) significantly higher. I've taught tons of beginners on presses, and under no circumstances would I *ever* recommend a fast single stage press to one of them.The only thing a fast single stage press does, is increase production speed, with an experienced operator. However, the rate at which a novice can destroy billets with a fast press, will be proportional. There's no practical difference otherwise. The end result, of either style, will be the same.I'm only jumping in here, because you didn't really qualify your response, and it's clear from the OP that he's not going to build one; so you essentially told him to avoid pretty much every option available to him. I also think, and no offense intended, you're not considering what's practical for them, considering their needs, versus what you prefer (I agree with that preference also, but don't recommend it for most).FWIW, the coal iron ones; even though the 16 ton doesn't list it, is clearly using a 2-stage pump, all the other listings mention it specifically. Frankly the base 16 ton one looks pretty weak to me. Notice the tiny ass round bar they're squishing in the promo video? Consider the 16+ at a minimum.They do look nicely built. I agree with Don, Uncle Al's presses will do the job, but I'm not a huge fan of the design, the whole guide bar setup for the top dies is flimsy and has a lot of slop in it. I can vouch for the build quality of Tommy McNabb's presses; they are rigid and well thought out, with a small footprint. The bottom die moving up takes a little getting used to if you've used others where the top die moves, but you get the hang of it quickly. You may be concerned about the lower HP motor for the same tonnage, but Tommy uses real industrial Baldor motors that produce much more real actual HP/Torque than the so-called "5hp" import farm duty junk motors that many of the other presses use.

12 Things to Consider When Buying a Metal Forming ...

It&#;s a major investment, so knowing what to consider when buying a metal forming machine is critical. I hope this buyer&#;s guide will help you find the metal forming machine that will serve your company as well in 25 years as it does today. 

What to Consider When Buying a Metal Forming Machine:

  • Precision
  • Accuracy & repeatability
  • Tooling
  • Deep drawing
  • Finish
  • Flexibility
  • Footprint and structural reinforcement
  • Material compatibility
  • Automation
  • Sustainability
  • Efficiency
  • R&D Tax credits

Precision: Benefits of Precision Metal Forming Machines

There are three primary types of precision metal stamping machines: traditional mechanical presses, traditional hydraulic presses, and bladderless hydroforming presses.

If you&#;re looking for speed, traditional mechanical presses achieve the highest production volume &#; especially for simple, shallow-formed parts. However, with fixed stroke lengths, these presses are less adjustable and rely on costly progressive dies. Repeatability and product finish quality may be a concern for some manufacturers in consumer-facing industries. Higher tooling and maintenance costs should be factored into the relatively low initial cost of mechanical machines.

Although traditional hydraulic presses can&#;t achieve the high cycling speeds of mechanical presses, they&#;re far more variable and perform better with complex shapes and geometries. Bladders used in a traditional hydraulic hydroforming press limit forming pressures to approximately 10,000 psi. Bladders are also prone to failure and can limit precision, repeatability, and may even leave friction marks, damaging the finish of the final product. Non-conforming part waste, consumables, and post-production fixturing should be factored into the relatively low initial cost of these machines.

Bladderless hydroforming presses eliminate costly, rupture-prone bladders and environmentally harmful hydraulic fluid. These presses, which are used in the FluidForming process, achieve forming pressures of up to 60,000 psi, resulting in 99.996% accuracy and repeatability. Low tooling, operation, maintenance, and post-production costs and minimal material waste offset the higher initial cost of a bladderless hydroforming press.

Accuracy & Repeatability: When Quality Matters

Keep your customers &#; both existing and future ones &#; in mind as you consider buying a metal forming machine. A key consideration: speed versus accuracy. What do your clients value today? What will their manufacturing priorities look like ten years from now? What kind of clients do you want to serve 15 years from now? 

High-speed mechanical presses are a good choice when speed and production volume are more important than accuracy, repeatability, and quality. As manufacturing changes, however, these high-volume, low-cost presses may not be the best option for all applications.

When precision, accuracy, and repeatability really matter, bladderless hydroforming comes out on top. The Six Sigma FluidForming process is ideal for the aerospace, medical, high-end home goods, and automotive industries. Other applications where precision metal forming may make a huge difference include three-dimensional designs, complex geometries, tight radii, and integrated lettering or branding. 

Tooling: High Die Costs Add Up

Both mechanical stamping and traditional hydroforming rely on progressive dies to achieve acceptable levels of precision. Progressive tooling is costly and time-consuming and damages the overall ROI of these machines. Nested tooling is possible, but if progressive dies are involved, it becomes a costly process. 

Bladderless hydroforming presses -- like the FormBalancers used by the FluidForming process -- achieve forming pressures of up to 60,000 psi. Typically the process requires just a single die from prototyping through production. In other words, the prototyping tool is the manufacturing tool. The presses also accommodate 3D-printed tools and are compatible with nested tooling. 

Deep Drawing: Complex Shapes = Interesting Products 

Traditional mechanical presses work best on flat, shallow components that are generally produced from coil stock.

Traditional hydraulic hydroforming and bladderless hydroforming are solid choices for complex forms that require higher amounts of material flow. Legacy hydroforming has been used for generations to create fuel cells, automotive parts, valves, sinks, pans, and other three-dimensional parts. Because of the bladder&#;s thickness, however, extremely tight tolerances and integrated logos or lettering generally cannot be accommodated.

Bladderless hydroforming methods are better for textured and non-standard deep drawing shapes like stepped, domed, or tapered parts. It also does a better job maintaining a constant material thickness, even over a tight die corner radius where other methods experience significant thinning. Logos, lettering, and integrated branding can be accommodated.

Finish: Consider Finish Quality and Post-Production Costs

When making a list of what to consider when buying a metal forming machine, it&#;s easy to overlook post-production costs. If you stop to look at the big picture, downstream costs become an important consideration.

Once again, mechanical presses come out on top when production speed is your top priority. But the process is hard on the sheet metal, leaving scars, grooves, scratches, tears. The resulting downstream costs like welding, polishing, annealing, painting, and polishing can be costly . . . and slow time-to-market.

While much easier on the metal, the bladders used in traditional hydroforming can still damage the surface of the finished product. Pre-finished, polished, or painted materials cannot withstand the friction of a traditional hydroforming bladder. 

If you&#;re manufacturing parts or components from pre-painted, textured, materials, bladderless hydroforming presses can produce nearly flawless products that require minimal post-production fixturing &#; therefore lowering costs and improving time-to-market.

Flexibility: Get the Most out of Your New Metal Forming Machine

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Mechanical presses are the fastest, but they lack flexibility. Again, if speed is king, you&#;ve found your leader.

Hydraulic hydroforming presses are capable of variable stroke lengths and variable slide velocities, but they&#;re limited to sheet metal forming.

If process flexibility and flexibility in manufacturing capabilities are important business considerations -- think sheet metal forming and tube forming -- then you may want to invest in a bladderless, force-contained press. Like a conventional hydroforming press, bladderless machines offer users a high degree of control and variability throughout the entire metal forming process. 

The FluidForming FormBalancer press is the only precision metal forming machine on the market capable of bladderless sheet metal forming, deep draw hydroforming and tube forming. In instances where bladder-based or hydraulic hydroforming would work best, the machines can also be configured to accommodate a bladder. 

Material compatibility: Lightweight is the New Heavyweight

Most precision presses can process precious metals, ferrous metals, non-ferrous metals, and non-standard alloys (Thomasnet). 

Aerospace, energy, medical equipment, electric vehicle, and EV battery manufacturers, for example, increasingly value strong and lightweight components &#; which improve performance and lower fuel consumption. With this in mind, it may be wise to consider a press that can accommodate the metals of tomorrow.

Bladderless high-pressure processes also accommodate superalloys. Even aluminum alloys, which are notoriously prone to wrinkling and fracturing under stress, perform well with the FluidForming technology and FormBalancer presses. 

Footprint and Structural Reinforcement: How Big is Too Big?

Depending on the capabilities of the machine, mechanical presses can take up a lot of square footage and may require costly foundational and structural reinforcements like pits and anti-vibration devices. 

Hydraulic presses also require structural reinforcement. 

Force-contained, bladderless presses do not require additional footings or reinforcement. Compact, modular press design allows for flexible floor placement. Multiple machine and table sizes &#; which range from 800 mm x 800 mm to 1,300 mm x 2,000 mm &#; can accommodate a variety of jobs.

Automation: Improve Efficiency and Streamline Production

Regardless of the press type, most modern precision metal stamping machines are computer-controlled and are relatively easy to automate. Better automation capabilities also improve efficiency and help support Lean manufacturing.

Sustainability: Making Manufacturing Greener & Lowering Operating Costs

As cold-forming processes, mechanical and hydraulic presses are infinitely greener than legacy die casting. However, energy consumption, material waste, hydraulic fluids, and other consumables render them less sustainable than bladderless metal presses. 

For an even more sustainable option with low operating costs, consider a 480V FormBalancer press. The bladderless press relies on water as the forming force and draws just 90-200 kW of power, depending on machine size. 

Efficiency: Where Purchasing and Manufacturing Come Together

MetalForming Magazine recently posed the excellent question: &#;How can a purchasing department work with its manufacturing team to find ways to continue investing in new technology?&#; 

Here&#;s their answer, in a nutshell: &#;There are four key factors when considering capital investments: price, performance, delivery and the ability to provide turnkey solutions.&#; 

One new machine, they note, &#;May allow a stamper to replace two or three aging presses. Efficiency skyrockets, as you conserve floor space and human capital. In many instances, the older equipment will not be able to process higher-strength steels or aluminum alloys in the tolerances required&#;particularly when producing electric-vehicle equipment. As such, new press technology will help stampers stay competitive.&#;

R&D Tax Credit: 

Yes, there&#;s a lot to consider when buying a metal forming machine. But let&#;s not overlook the importance of the Research & Development Tax Credit. The R&D tax credit is available to companies developing new or improved business components. This includes new products or processes &#; like a new metal forming machine.

The R&D Tax Credit is a dollar-for-dollar tax savings that directly reduces your company&#;s tax liability. There is no limit to the amount of expenses and credit that you can claim each year. If the federal R&D credit can&#;t be used immediately, then the unused credit can be carried back for one year and forward for up to 20 years. State carryover rules vary. (Source: MossAdams).

To learn more about buying a metal forming machine for your facility, contact FluidForming Americas at (800) 497- or us at .

Join us in Chicago at FABTECH, September 13-16, ! You can find us in Hall D, Booth D in the Metalform Pavilion.

FluidForming Americas, Inc. is a member of the Precision Metal Forming Association and is AS Rev D, ISO : certified.

For more information, please visit cold forging press.