Browse Prior Art Database

Slider/Flexure Attaching Method to Reduce Deformation by Thermal Expansion

IP.com Disclosure Number: IPCOM000103916D
Original Publication Date: 1993-Feb-01
Included in the Prior Art Database: 2005-Mar-18
Document File: 2 page(s) / 34K

Publishing Venue

IBM

Related People

Aoyagi, A: AUTHOR [+3]

Abstract

Disclosed is a method for attaching sliders to flexures on suspension assemblies used in hard disk drives.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 91% of the total text.

Slider/Flexure Attaching Method to Reduce Deformation by Thermal Expansion

      Disclosed is a method for attaching sliders to flexures on
suspension assemblies used in hard disk drives.

      Generally slider is made of ceramics material and flexure is
made of stainless steel.  Therefore, when head suspension assemblies
are heated, the slider crown decreases.  If the temperature is too
high, the slider becomes negative crown, because thermal expansion
coefficient of slider is smaller than that of flexure.  This negative
crown degrades the head-disk durability performance of contact start
stop too much.

      If thermal expansion coefficient of slider material is equal to
that of flexure material, deformation due to temperature change never
occurs.  But, it's hard to determine almost the same thermal
expansion coefficient material combination.

      Even with conventional slider and flexure combination,
attaching sliders to flexures at high temperature reduces slider
deformation caused by the difference of thermal expansion
coefficient.

      When head suspension assemblies are in high temperature, the
slider becomes negative crown, as mentioned before.  However, once
they are attached in high temperature, the slider crown still remains
positive and becomes more positive in room and low temperature.  As
the result, the head-disk durability performance improves owing to
this extra positive crown.

      Since actual operating temperature of...