Method for producing ultrahigh-precision hard disk driving arm sections

A technology of hard disk drive and production method, which is applied in the field of production of ultra-high-precision drive arm profiles, can solve the problems of low hardness, low profile precision, and increased manufacturing cost of hard disk drive arms, and achieves improved yield strength, reduced internal stress, and reduced The effect of bending and twisting

Inactive Publication Date: 2011-08-31
钱政
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 2. Grain size
[0008] 3. Dimensional tolerance and profile
The computer hard disk drive arm aluminum alloy hot extrusion profile has extremely high requirements for dimensional accuracy, mechanical properties, microstructure, cutting performance, surface treatment performance, etc., but the existing aluminum alloy profile production method has low precision and low hardness. Low, more post-processing procedures are required to achieve the required hardness
Leads to increased manufacturing cost of the HDD arm

Method used

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  • Method for producing ultrahigh-precision hard disk driving arm sections
  • Method for producing ultrahigh-precision hard disk driving arm sections

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This embodiment describes the production method of ultra-high-precision hard disk drive arm profiles, producing a certain ultra-high-precision computer hard drive arm aluminum alloy profile, the chemical composition, melting and casting equipment and quality control of the 6061M aluminum alloy round ingot used As follows: (Unit: weight percentage)

[0032]

[0033] The main processes of hot extrusion are as follows:

[0034] Aluminum alloy round ingot melting and casting → homogenization and induction preheating → shunt die design, manufacturing and preheating → hot extrusion forming → online water spray quenching → synchronous traction → interruption → cooling bed cooling → stretching and straightening → fixed Ruler sawing → artificial aging treatment → finished product inspection → packaging and shipping, etc.

[0035] The main equipment used is as follows:

[0036] (1) The hot extrusion forming equipment adopts a 1800 US ton forward single-action extruder. The centering pe...

Embodiment 2

[0069] The production method of ultra-high-precision hard disk drive arm profile described in this embodiment is to produce a certain ultra-high-precision computer hard disk drive arm aluminum alloy profile, the chemical composition, melting and casting equipment and quality control of the 6061M aluminum alloy round ingot used As follows: (Unit: weight percentage)

[0070]

[0071] The main processes of hot extrusion are as follows:

[0072] Aluminum alloy round ingot melting and casting → homogenization and induction preheating → splitter die design, manufacturing and preheating → hot extrusion forming → online water spray quenching → synchronous traction → interruption → cooling bed cooling → stretching and straightening → fixed Ruler sawing → manual aging treatment → finished product inspection → packaging and shipping, etc.

[0073] The main equipment used is as follows:

[0074] (1) The hot extrusion forming equipment adopts a 1250-ton forward single-action extruder. The center...

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Abstract

The invention provides a method for producing ultrahigh-precision hard disk driving arm sections, relating to a production method by using 6061 aluminum alloy round ingot casting. A main technology of hot extrusion in the method comprises the following steps of: casting the aluminum alloy round ingot casting, homogenizing and carrying out induction preheating, designing, manufacturing and preheating a divergent die, carrying out hot extruding and shaping, carrying out online quenching by spraying water mist, dragging synchronously, interrupting, cooling a cooling bed, stretching and straightening, cutting to length, carrying out manual ageing treatment, checking finished products, packaging and dispatching and the like. The sections finally obtained by the production method meet various requirement of the hard disk driving arm sections, such as hardness, strength, yield strength and the like.

Description

Technical field [0001] The invention relates to a production method of a profile, in particular to a production method of an ultra-high-precision driving arm profile for processing into a hard disk for storing data. Background technique [0002] 1. The computer hard disk drive arm is an ultra-high-precision aluminum alloy part, and its blank form is currently mainly aluminum alloy hot extruded profile (Extruded Profile), and the blank is processed by high-precision machining, deburring and surface treatment. [0003] 2. The technical requirements for ultra-high precision computer hard drive arm aluminum alloy profiles are as follows: [0004] 1. Mechanical properties [0005] Tensile strength σb≥280MPa, yield strength σ0.2≥240MPa, elongation δ≥8%, hardness HRE 85~95. [0006] 2. Grain size [0007] ASTM E112 or GB / T 3246.1-2000 standard 3~8. [0008] 3. Dimensional tolerance and profile [0009] (1) The dimensional tolerance is generally ±0.2mm, special ±0.125mm. Use the three-coordinate ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C23/02B21C29/00B21D3/00C22F1/04
Inventor 倪秋明钱政
Owner 钱政
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