Alpha-Rowen Ltd are a Made in the Midlands Bronze Member
Alpha-Rowen Ltd remains the largest UK sub-contractor of austempering servicing in the spring and presswork market.
The companies broad range of furnaces can deal with an array of specifications to a very high standard. Alpha-Rowen Ltd currently employs 21 staff, with an average service to the company of over 10 years, giving clients a wealth of experience. Over 20 years has been devoted to the development of 3 types of austempering furnaces, and the manufacture of over 20,000 different components. Along with the expertise of producing a high quality product, recognising the need for fast and flexible turnaround of both large and small volumes is also integral to Apha-Rowen’s success.
Our customers supply austempered components to many industries including:
Automotive and aerospace
Electrical and electronic
Construction, DIY and Ironmongery
White goods and stationary Telecommunications
What is Austempering?
Austempering is an isothermal heat treatment that, when applied to ferrous materials, produces a structure that is stronger and tougher than conventional methods of heat treatments, whist still upholding a ductile structure with minimum distortion. These items are typically small springs or steel pressings, whereby thin sections of certain medium or high carbon steels, or some alloy-containing steels, have thicker sections throughout the product.
This structure is preferable to the less ductile, oil-hardened structure, and has the added benefit of producing less distortion. This is produced by utilising an atmospheric controlled high temperature quench, followed by being held in a molten salt bath (between 240-380 degrees centigrade) whilst the steel undergoes the hardening process. No subsequent tempering is required. The part is then removed from the salt quench and cooled to room temperature.
Please see the full advantages of Austempering and product specification fit to utilize this method.
What is Oil Hardening?
Oil hardening is achieved by quenching the components from above the austenitising temperature into oil, at a suitable rate to achieve the formation of martensite. Alpha-Rowen Ltd now also offer continuous hardening through a shaker hearth line, capable of handling a wide variety of components in a cost effective manner. The constant dedication to development at Alpha-Rowen Ltd has resulted in a specialisation in treating smaller batches of work, from less that a kilo, up to tonne batches.
Please see the benefits of Oil Hardening.
What is Stress Relieving?
Applied to both ferrous and non-ferrous, this process is intended to remove the internal residual stresses that that been generated by prior manufacturing processes, such a machining. Without this process, further manufacturing tot he product my cause unacceptable distortion, along with the piece suffering from service problems, such a stress corrosion cracking. Stress relieving cycles can be performed on some stainless steels, along with offering jig-tempering to help resolve distortion issues that have not been resolved through standard operation.
Please see the advantages and capacity of Stress Relieving.
Please also see our frequently ask questions to resolve any immediate queries you may have.
Operations are divided over 2 sites, running 24-7 (mon-fri), in order to fulfil an optimum capacity. Alpha-Rowen have a range of 7 furnaces, facilitating a variety of requirements, whether that be singular items, small batches, up to multi-tonne orders. We are a key link in our customers supply chain, working to ensure a timely, high quality service that will enhance our customer’s product.
2 Mesh belt furnace lines
Auto loaded shaker hearth line
2 smaller shaker hearth basket furnaces
2 auto shaker hearth
Please see a more in-depth breakdown of equipment and capacities here.
At Alpha-Rowen Ltd, we recognise that to satisfy our customers’ needs we must pursue the objective of “never ending improvement” in all aspects of our business. To assist us in this philosophy we have a quality assurance management system certificated to ISO 9001:2000.
We also recognise that we need the full co-operation and support of all our employees to continually meet our objective. We ensure all our personnel are fully aware of the company’s objectives and we re-enforce this through on-going training and educational programmes throughout the company.
Our austempered products have a clean blue finish suitable for further processing or can be dipped in de-watering oil to provide some short term corrosion resistance
We can process components over a range of specifications to meet your requirements.