The increasing importance of the construction material magnesium requires the latest on the gland using an optimum material Partners. Aluminum screws brand "Alufast"Arnold Umformtechnik have proven themselves in the screw machine covers, beams and reinforcement components of magnesium especially.
The weight advantage of some 350 g compared to the steel version makes Alufast screws not only in gear for designers interesting. Much weight can be saved according to the results of an investigation of the connection at a specialist application of 20 screws per gear. With an annual production of gearboxes for example 100.000 thus be around 35 t steel compensated.
At the same time is the Alufast very good program for use on particularly temperature-stressed joints in corrosive environment. Under thermal stress, the screws have proven particularly useful. The mechanical properties of the screws are stable in long-term exposure to peak temperatures of 150 ° C.
Compared to the steel screw, the designer can use the standardized Magnesiumbauteilverschraubung headrests. The screws achieve process reliability strength and elongation properties combined with good corrosion properties. Higher residual prestressing forces in magnesium glands to thermal fatigue loads Alufast draw from over a steel bolt.