Heat Treating Service
At Bohne Spring Industries Ltd., we are dedicated to providing quality heat treating services and metal products. We are very proud of our skilled and friendly team members who are all committed to getting the job done right the first time. In addition to heat treating and design services, we offer standard and custom manufacturing of springs, wire, forms and metal stampings. We have decades of experience in the spring industry, and remain committed to continuous improvements. Customer service is our top priority, and we provide short lead times, 100% traceability and competitive pricing. We aim to develop mutually beneficial relationships with our customers over many years.
Heat Treating Services
Our heat treating service consists of a newly acquired austempering line that hardens and tempers spring steel in the range of HRC 42-47. Austempering is an isothermal heat treatment applied to ferrous metals, primarily steel and iron. This treatment produces baintite structures in steel and ausferrite structures in iron that improves mechanical properties or reduces distortion.
Heat Treating Industrial Activities
We serve customers working in a wide variety of market sectors, including the automotive, aerospace, defense, consumer goods and telecommunications industries.
Heat Treating Process
In the austempering process, the metal in question is heated to a "red heat" (486-981ºC) in a controlled atmosphere and then quenched in a molten salt bath (232-399ºC). This produces baintite structures in steel and ausferrite structures in iron. The production of these structures takes place over a longer period of time, which cools the metal at an even rate. This minimizes the likelihood of distortion and micro-cracks that, in the long term, weaken the metal. Our special order department will work with you to develop custom orders, prototypes, and R&D initiatives. Registered to ISO 9001:2008 and TS 16949:2009, we always aim to develop our quality products with the best technology.