BALANCER, HEAD STACK ASSEMBLY WITH THE SAME, AND METHOD FOR MANUFACTURING THE BALANCER AND OVERMOLD OF THE HEAD STACK ASSEMBLY

摘要

A balancer, an HSA(Head Stack Assembly) with the same, a method for manufacturing the balancer, and a method for manufacturing an overmold of the HSA are provided to be inexpensive at manufacturing cost by being formed as a stainless steel and prevent the generation of interference with a magnet by being reduced to paramagnetism by a demagnetization thermal process. A balancer is mounted in an overmold(145) of an HSA(130) to adjust the balance of the HSA(130). The balancer is formed as a stainless steel, and is demagnetized through a thermal process after a shape is processed. In the demagnetization thermal process, the stainless steel is left alone during 30 to 120 minutes in temperature among 950 to 1150 °C. When the balancer is laid in a mold for molding the overmold(145), a groove is formed in an upper surface or a lower surface to set the laid position.