Tension springs are manufactured with various types of loops: English, German, swivel, screwed, elongated, lateral, and shaped according to customer design.
Working range: For the production of tension springs, wires with thicknesses from 0.15 mm to 12 mm are used.
Materials: Various materials are used for the production of tension springs, all available in stock:
- Medium carbon steels C and high carbon D (DIN 17223.1)
- Low carbon steels
- Iron Fe37
- Stainless steels (DIN 17224/EN10088), AISI302, AISI 316
- Pre-tempered steels (DIN 17223.2)
- Copper alloys (DIN 17666 & 17677.1)
- Nickel alloys
- Copper and phosphor bronze alloys (EN 1652)
- Brass OT67
Special materials: Upon request, the following materials can also be used: Titanium, Inconel, Hastelloy, Nimonic, René, Waspalloy, Springflex.
Surface treatments: For the production of tension springs, the following processes are possible directly at the facilities: Shot peening, Sandblasting, Oiling, Galvanizing, Chroming, Browning, Geomet, Nickel plating, Painting.
Testing and quality control: Mollificio Rizzato conducts a series of control tests directly at its facilities to verify the quality and characteristics of the product.
- Dimensional measurements
- Load measurement
- Elastic characteristics measurement
- Fatigue life tests (upon request)
- Salt spray tests (upon request)
- Surface treatment thickness measurement (upon request)
Application fields: Examples of use for tension springs:
- Mechanics
- Construction
- Appliances
- Electrotechnics
- Cleaning
- Food industry
Features / Technical specifications:
- Loop types: English, German, swivel, screwed, elongated, lateral, shaped
- Wire thickness: from 0.15 mm to 12 mm
- Materials: carbon steels, stainless steels, iron, copper alloys, nickel alloys, brass, special materials upon request
- Treatments: shot peening, sandblasting, oiling, galvanizing, chroming, browning, geomet, nickel plating, painting
- Quality controls: dimensional measurements, loads, elasticity, fatigue tests, salt spray, treatment thicknesses