Reworking method for magnetic head components
A technology of magnetic head assembly and magnetic head, which is applied in the direction of the hydrodynamic spacing of the head, the configuration/installation of the recording head, the support head, etc., can solve the problems of poor welding reliability, thermal damage of the new slider, etc., and achieve the goal of ensuring reliability Effect
Active Publication Date: 2008-09-10
TDK CORPARATION
View PDF2 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
In this case, since the melting point of the Au-Sn compound is higher than that of the solder, when the electrode pad of the new slider is welded to the electrode pad of the reused suspension, even if the solder melts on the electrode pad, the Au-Sn compound It will not melt completely, and the reliability of soldering will be poor compared to the case of bonding with only solder
To completely melt the Au-Sn compound, just heat it at a temperature higher than the melting point of the Au-Sn compound, but if the heating temperature is increased, it will cause thermal damage to the new slider
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0026] FIG. 1 is a plan view showing the overall structure of a magnetic head assembly (complete state) for a hard disk drive to which the present invention is applied. The magnetic head assembly 1 includes: a magnetic head slider 11 in which a magnetic head 12 is incorporated; and a suspension 21 to which the magnetic head slider 11 is bonded and fixed. The suspension 21 includes: a load beam 21a (load beam); and a flexure 21b attached to the tip end of the load beam 21a in a state of elastically supporting the magnetic head slider 11 in a floating state relative to the load beam 21a. The flexible member 21b is a leaf spring-shaped flexible metal thin plate. With adhesive, the flexible wiring substrate 22 is attached on the surface of the flexible member, and is used to connect the magnetic head 12 and the external circuit (the circuit system of the hard disk drive equipped with the magnetic head assembly 1 ). As shown in Fig. 2 and Fig. 3, the back side 11c of the magnetic ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a reworking method of a magnetic head assembly which can ensure welding reliability by re-utilizing a suspension frame with a simple operation and apparatus. A new sliding block replaces a poor sliding block in the magnetic head assembly including an electrode pad welded with a magnetic head sliding block and an electrode pad of the suspension frame. Firstly, cohesional strength between the poor sliding block and the suspension frame is reduced by heating, and welding material of the electrode pad jointing with the poor sliding block and the suspension frame is softened. Next, one part of the softened welding material is left on the electrode pad of the suspension frame and is cut along direction parallel with the electrode pad surface for removing the poor sliding block from the suspension frame. Finally, the new sliding block replacing the poor sliding block is loaded on the suspension frame and the residual welding material on the electrode pad of the suspension frame is re-utilized for jointing the electrode pad of the new sliding block with the electrode pad of the suspension frame.
Description
technical field [0001] The invention relates to a method for reworking a magnetic head assembly welded in a mutually orthogonal position relationship between the electrode pads of the magnetic head slider and the electrode pads of the suspension. Background technique [0002] A magnetic head assembly used on a hard disk drive (HDD) includes: a magnetic head slider (slider) on which a magnetic head is installed; and a suspension (suspension) connected to the magnetic head slider and fixed. The suspension has a flexure elastically supporting the head slider. A flexible wiring board for electrically connecting the magnetic head to an external circuit is attached to the surface of the flexible member. In order to cope with the narrowing of the bonding area (electrode pad size and electrode pad spacing), the electrode pads of the magnetic head slider and the electrode pads of the suspension (flexible wiring substrate) are bonded by ball bonding. Ball bonding uses A solder ball ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): G11B21/21G11B5/60B23K1/018B23H7/02
Inventor 山口巨树关口浩幸
Owner TDK CORPARATION