MEDICAL HEAT TREAT

Orthodontic Industry Purchases Blue M Convection Oven from TPS

Thermal Product Solutions (TPS), a global manufacturer of thermal-processing equipment, announced the shipment of a Blue M Ultra-Temp Standard Convection Oven to the Orthodontics industry. The convection oven will be used for a metal injection molding debind process at temperatures of 390°F and 1050°F.

The Blue M oven work chamber is 48” W x 24” D x 36” H and has a maximum temperature rating of 1300°F. The customer’s parts will be placed on ceramic trays then run through the debind cycle that usually lasts 14 to 16-hour cycle. The process off gasses some non-hazardous fumes that condense into a form of wax. The parts are loaded into the oven via a lift truck.

The oven has a powered exhaust with VFD for pulling out non-hazardous fumes coming from the products during the de-binding process. The VFD will enable the customer to adjust the exhaust motor speed to reduce or increase the exhaust flow rate.

Unique features of these Blue M ovens include:

  • Powered exhaust
  • Reinforced chamber floor to hold up to 500-lbs distributed load
  • 6-inch high angle iron floor stand to raise the oven and allow customer to insert their lift truck under the oven to load their product into the oven work space

Orthodontic Industry Purchases Blue M Convection Oven from TPS Read More »

Heat Treat Basics: Bringing Nadcap to the Medical Industry

BOTW-50w  Source:  Power Transmission Engineering June 2016

“For suppliers, the other way to get involved is obviously through getting audited for accreditation. If you’re interested in an audit, the process is fairly straightforward. Once in contact with MedAccred, a supplier details their products and figures out what categories they should be applying for.”

Find out what medical options are available to the heat treating world by reading:  Bringing Nadcap to the Medical Industry

 

 

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Effect of Heat Treatment on the Tensile Strength of ‘Elgiloy’ Orthodontic Wire

BOTW-50w  Source:  Dental Materials –

Elgiloy is the trade name of a cobalt–chromium–nickel superalloy that is offered for orthodontic use as wire. Despite some years of use, there is very little information in the dental literature on its mechanical properties, and especially on the effect of the hardening heat treatment (HT), that may be used after forming, on the tensile strength (TS) in relation to the four ‘tempers’ that are available.

Read More:  The Effect of Heat Treatment on the Tensile Strenght of “Elgiloy” Orthodontic Wires by S.M. Philip and B. W. Darvell

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New Brazing Audit Criteria Released by MedAccred

In response to industry demand, the MedAccred program has recently released new audit criteria for brazing. AC8102/1 MedAccred Audit Criteria for Heat Treating – Brazing will be used during MedAccred audits conducted at companies performing brazing in an atmosphere or vacuum furnace or  in a dip salt bath.

The new audit criteria were developed by the MedAccred Heat Treating Task Group which is comprised of technical experts from Johnson & Johnson, Stryker, GE Healthcare, Medtronic, Applied Thermal Technologies, Bodycote, Harterei Gerster, Hansen Balk, Lake City Heat Treating, Paulo Products and Solar Atmospheres. To date the Task Group is one of the most successful within the MedAccred program. It has released six audit criteria in total and has several companies who have already achieved accreditation; these include Solar Atmospheres, Hansen Balk and Bodycote.

The industry chairperson of the Heat Treating Task Group is Bruce Dall, Senior Staff Quality Engineer – Metal Injection Molding of Stryker. He is very proud of the achievements of the program to date:  “I would like to thank my fellow members of the Heat Treating Task Group for their hard work and the commitment they have shown in the development of these new audit criteria for brazing. In most other environments we are competing organizations but when we come together as a MedAccred Task Group, we are able to put aside our rivalries in the interest of quality and working towards consistently safer products for our patients. The fact that we are now seeing suppliers stepping forward to pro-actively gain a Heat Treating accreditation MedAccred is a strong indication of how important this program will be to the future of the industry and I am proud to be at the forefront of this effort.”

Companies interested in gaining accreditation for Heat Treating are encouraged to contact Justin McCabe, MedAccred Co-Lead (jmccabe@p-r-i.org) for more information. Companies achieving accreditation will be listed on MedAccred’s Qualified Manufacturers List (located at www.eAuditNet.com).

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Metal Medical Miracles

BOTW-50w  Source:  Today’s Medical Developments –

Many physical ailments would go untended if it weren’t for the metals and heat treatments used to repair us. Cobalt chrome alloys, titanium, stainless steel – these and a host of proprietary metals are used in knee and hip joint replacement, fusion cages that relieve pressure on ailing discs, pacemakers and pumps, and the screws and hardware that hold it all together.

Read More:  Metal Medical Miracles – Sandvik Coromant

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Schafer Gear Works Transfers its Fort Wayne, Ind., Commercial Aviation Shafts and Small Gear Capabilities to South Bend, Ind.

Shafer Gear Works, Aerospace Heat Treat, Automotive Heat Treat, Medical Heat Treat, Manufacturing Heat TreatTo meet Schafer Gear Works’ growing demand for high-precision commercial aviation shafts and gears, the company recently moved its Fort Wayne, Ind., operations to its larger production facility in South Bend, Ind. “Acquisition of new, state-of-the-art equipment at our South Bend plant and the ability to better leverage our gear manufacturing expertise led to the transfer,” said Paresh Shah, operations manager for the South Bend facility. The transition was seamless and the plant now produces precision-critical shafts and small-diameter gears with tolerances to 0.0004” and microfinishes to 16 RMS.

Shah said moving the small-diameter gear production 90 miles west to Schafer Gear Works South Bend will improve design and manufacturing efficiencies as well as customer support. By centralizing the facility’s small- and medium-diameter gear engineering, production and quality control expertise, the company is expanding its presence in the aerospace and automotive industries as well as with medical instruments, light and heavy industrial products, recreation vehicles, and material handling companies. Its efforts to reduce tool costs and downtime keep pricing competitive and delivery among the fastest in the gear-making industry. Because of the South Bend facility’s continuous equipment improvements and stringent quality standards, it has earned ISO 9001-2008 and AS9100 certification.

Schafer Gear Works manufactures one of the widest ranges of custom-engineered, precision-cut gears for off-highway markets. In addition to the small-diameter gears and precision components, the South Bend plant produces 1.5- to 10-inch diameter spur, internal and helical gears as well as shafts.

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Heat Treatment of Medical Device Fasteners

BOTW-50w  Source:  Fastener-World.com

Fasteners are used extensively throughout the medical device industry (e.g., dental & orthopedic implants,
instruments), utilizing literally hundreds of different shapes and styles to keep the assemblies intact. Even though the components in the medical devices are small or even tiny, when a fastener fails, the device will almost always fail as well. The correct fastener ensures that the device goes together andstays together for the intended life of the assembly, and that the device performs as desired. The right fastener can reduce the
overall cost of a medical device and improve the quality of the entire assembly. Medical devices fall into two broad categories, surgical/non-implant devices and implantable devices.

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What the Medical Industry Can Learn from the Aerospace Industry

BOTW-50w Source: mdtmag.com

Heat treatment standards are stricter in the aerospace industry than in the medical industry where lives are on the line. This doesn’t make sense and something is being done about it.

Click here to read more about how Bob Hill, President of Solar Atmospheres of Western Pennsylvania believes the medical industry could benefit from adopting quality standards from the aerospace industry.

Author: Bob Hill, President, Solar Atmospheres of Western Pennsylvania

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Heat Treat Enhances Density of DMLS 3D Tools

BOTW-50w  Source:  Stratasys Direct Manufacturing

Metal 3D Printing, or DMLS, has become an instrument for change in medical device and surgical tool manufacturing. Within this white paper, we’ve revealed the key features that make DMLS viable for applications like medical device manufacturing and how you can leverage those advantages for your project. In this white paper, you’ll learn:
1. Metal 3D printing design constraints and freedoms
2. Metal materials including Titanium Ti64
3. Heat treatment methods that enhance the density of DMLS tools

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Laser Marking for Passivation and Corrosion Resistance

BOTW-50w  Source:  Today’s Medical Developments

The most commonly used medical device materials are stainless steel 304 and 17-4. These materials have a natural passive corrosion-resistant layer, consisting of chromium oxide, which resists repeated sterilization and has an inert surface that will not react inside the body.

During the manufacturing process, multiple machining steps can remove or degrade this passive surface by embedding iron chips and particles into the surface. The material must then be put through passivation to rebuild the passive layer – removing iron from the part’s surface, which also removes potential corrosion sites.

The style of mark required by the medical device industry is called a dark or annealed mark. This mark does not remove any material from the part, avoiding any potential for any contamination to collect. When handling the part, the dark or annealed mark must not be able to be felt on the surface of the material. The heat input needed to build up this oxide layer tends to degrade the passive layer on the marked surface and can cause local migration of alloying elements.

Read More:  Laser Marking for Passivation and Corrosion Resistance by Geoff Shannon and Gary Firment

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