Mounting Press System for Metallography

Mounting Press System for Metallography

Mounting turns an awkward piece into something the next machine can hold. A small, irregular or fragile specimen is set in resin so its edges stay square and its surface stays flat through grinding and polishing. NextGen supplies hot mounting presses and vacuum impregnation systems for specimens prepared to ASTM E3.

Presses run from motorised single-chamber units to fully automatic hydraulic and dual-chamber machines that mount two samples at once, with mould diameters chosen to suit the specimen. Vacuum systems handle porous, cracked and coated material that resin has to reach before it sets. Resins, moulds and release agents come from the same supplier, and support continues for the life of the press.

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What Mounting Does

Mounting stabilizes the specimen for the steps that follow. It gives the operator a solid grip during grinding and polishing and supports fragile edges that could chip or deform under pressure. In hot compression mounting the specimen sits in a mold with thermosetting or thermoplastic resin that softens under heat and pressure and hardens into a block. Phenolic resins suit general work, and epoxy types are chosen when better edge retention and low shrinkage are needed. Cold mounting pours liquid epoxy or acrylic over the sample at room temperature, which suits heat-sensitive or irregular specimens. When porosity is an issue, vacuum impregnation draws the resin into the pores and removes trapped air.

The Standard Behind Mounting

ASTM E3 covers mounting small or fragile pieces so their edges stay flat, as one step in the sequence from section to examination. The guide describes principles, so the resin and the method are chosen for the specimen. ASTM E384 adds that microindentation hardness testing requires a prepared surface, which a well supported mount provides.

What Affects Mount Quality

Air bubbles, uneven resin mixing, and a resin much softer or harder than the specimen create voids and wear mismatches. Cleaning the sample before embedding and applying a mold release agent in hot presses prevents most defects. In a hot press the temperature, pressure, heating time and cooling time are set as one cycle, and edge retention depends on firm support around the area of interest. Each mount should be labeled right after curing so orientation and identity stay clear.

Mounting Equipment from NextGen

The GenPress MFA range mounts specimens by hot compression: the MFA HYD with hydraulic loading, the MFA MOT with motorized loading and the MFA Dual HYD with two molds. All three store up to 100 programs on a 7 in touch screen and accept mold diameters from 22 to 50 mm or 1 to 2 in. For porous or fragile material the GenVac MP and GenVac MP3 impregnate under vacuum before the epoxy sets; the MP3 offers eight memory methods and up to 99 degassing cycles, and its epoxy fills pores and cavities, which improves edge retention on the finished mount. Resins and molds come from the NextGen consumables range.

For Laboratories

One partner to equip your complete metallography laboratory

Mounting is one step of metallographic preparation. NextGen equips the rest of the laboratory too, from cutting, grinding and polishing equipment to hardness, tensile and impact testing, and stays responsible for it after delivery.

  • Equipment, fixtures and software
  • Installation, training, calibration
  • Lifetime technical support

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FAQs

The touch screen holds the heating, cooling and timing parameters, and each set can be adjusted and saved as one of 100 programs. Temperature is adjustable from 0 to 200 °C, heating time from 0 to 99 minutes and cooling time from 0 to 99 minutes, and the pressure setting runs from 0 to 60 bar. The press sounds an alarm when the cycle ends, so the operator can work elsewhere during the run.

The HYD applies compression through a hydraulic system and the MOT through a motorized system. The Dual HYD carries two molds and produces up to four samples per cycle, against up to two with the single-mold presses and optional spacers, and it has a 4 kW heater against 2 kW. All three use a 7 in touch screen, store up to 100 programs and cool with water, with an optional chiller.

The MP2 has a 6.3 in (16 cm) vacuum chamber with a transparent lid, simple front panel controls and a separate pump drawing 10.7 kPa. The MP3 adds a 4.3 in color touch panel, eight memory methods, multiple languages, 99 degassing cycles and programmable pressure relief, with a larger 11.8 in (30 cm) chamber and a vacuum of 600 mmHg. See the GenVac MP and GenVac MP3 pages.

Two epoxy systems are listed. Speedy Epoxy releases heat during curing and cures at room temperature in about 45 minutes. High Flow Epoxy releases no heat and cures in about 24 hours. Mounting cups are silicone, in general or high transparency versions, for 25, 31.75, 40 and 50 mm mounts, with transparent acrylic rings and cups, and stainless steel or plastic specimen clips. The metallography consumables page covers resins for the presses.

No. The MP series is plug-n-play and needs no formal training or installation, and the supplied instructional videos cover set-up and running. Parts and all consumables are in stock and can be acquired directly from NextGen by request. NextGen does not use proprietary parts, so additional parts can be sourced from local suppliers many years down the road.

Please refer to the below links summarizing the differences between the mounting press systems. For more information, contact us today to help supply you with the mounting press machine that best fits your needs.

Mounting Press Chart

All of NextGen's hot and cold mounting press solutions are design with user-friendliness in mind. The question becomes 'which unit is the most optimal based on my daily sample volume'. With our manufactured to order and refurbished cold mounting press line-up, we are confident that we will find the correct option for your daily sample volume and time savings. Contact us today to learn more.

NextGen's lead time commitment for your semi-automatic mounting press is between 2-4 weeks from the beginning of the manufacturing phase to doorstep delivery. The semi-automatic mounting press machines are thoroughly tested and inspected in our facility prior to dispatch to insure that you get the perfect metallographic mounting solution every time. Contact us today to learn more.

The metallographic mounting press equipment is technologically advanced yet fundamental in its operation. The metallography mounting presses with NextGen can come upgrade with a 3 piece samples mounting option. This allows you to reach triple productivity with the same unit. The fully automated metallographic mounting press gives you an additional benefit of no operator involvement during the hot mounting press process. Request your quote today to learn more.

When it comes to mounting larger volumes of metallographic specimens we would recommend going with the MSA Series semi automatic mounting press or the MFA Series fully automatic mounting press. Both of the suggested mounting presses for metallographic specimen preparation offer a high speed sample preparation with minimum to virtually no operator involvement. These state of the arts mounting presses allow the operators to spend minimum time preparing between 1 to 3 samples at any one given time in minutes. Feel free to review the videos outlining the process for our Semi-automatic mounting press equipment and Fully-automatic mounting press equipment or visit our YouTube channel for additional specimen preparation solutions.

Our metallographyic mounting press line up covers a mass range of metallographic sample preparation needs for any quality control lab. GenPress Series - Metallography Mounting Presses are here to serve your needs with semi-, fully-automatic and advanced mounting press equipment. Our vacuum impregnation systems are state of the art allowing for multiple sample preparation of porous materials with speed and ease. Contact us today to learn more.

The main difference between semi and fully automatic mounting presses in the GenPress Series - Metallography Mounting Presses is the level of operator involvement. Depending on your laboratory needs you may be okay with your engineer being present during the mounting process or having the flexibility of walking off to complete various tasks during the same hot mounting press process. With our GenPress MSA - Semi Automatic Mounting Press the process requires minute monitoring of the pressure during the mounting process. GenPress MFA - Fully Automatic Mounting Press model controls the pressure automatically after the sample and the epoxy has been loaded in the unit. Both machines operate with speed, ease of use and finesse. You may choose to watch the videos for GenPress MSA and GenPress MFA to experience the difference.

Check out GenVac MP Series - Epoxy Mounting Vacuum Impregnation System for metallographic sample preparation. This unit is one of NextGen's best sellers because of the value it brings to our customers. Simply watch the target="_blank">GenVac MP Video to learn how easy it is to work with this cold mounting press to reach your sample preparation goals. This state of the art affordable metallographic mounting press is equipped to take care of your porous material needs including rocks and minerals, ceramics, electronic circuit boards and other composite materials. Request quote today to learn how the GenVac MP Series is your optimal affordable vacuum impregnation equipment solution.

When it comes to high volume sample preparation needs, the GenPress MSA and MFA Series - Semi and Fully Automatic mounting presses for metallographic sample preparation needs are your top options. GenPress MSA and MFA metallographic mounting presses are very close in their technical make-up. Each one can hold samples of 1" up to 2" in diameter. Each one can come with an option of 1 or 3 samples holders for maximum efficiency. Both units are designed for ease of operator use. You may review the videos of both of the mounting press systems at GenPress MSA Video and GenPress MFA Video. When it comes to a quality mounting press machine, you can rely on NextGen. Contact us today to learn more.

NextGen Material Testing, Inc. brings you're the GenPress MFA Series - Fully Automatic mounting press equipment for metallographic sample preparation needs. This automatic mounting press series comes with a touch pad or a touch screen upgrade for the simplest mounting of your samples. The heating, cooling, and timing can be adjusted as you require. Watch the GenPress MFA video to learn the operational process of this affordable mounting press. Request quote today to learn more.