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A workpiece, its preparation method, and an electronic device containing the workpiece

A technology for workpieces and electronic components, applied in electrical equipment shells/cabinets/drawers, chemical instruments and methods, electrical components, etc., can solve problems such as surface cracking and high internal stress of composite materials

Active Publication Date: 2016-03-30
LENOVO (BEIJING) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the internal stress of the composite material prepared by this method is greater, and defects such as surface cracks will appear in the subsequent NCVM treatment.

Method used

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  • A workpiece, its preparation method, and an electronic device containing the workpiece
  • A workpiece, its preparation method, and an electronic device containing the workpiece
  • A workpiece, its preparation method, and an electronic device containing the workpiece

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Take a layer of magnetically conductive stainless steel, each layer with a thickness of 0.5mm, and a layer of polycarbonate with a thickness of 0.8mm.

[0057] Combine magnetic stainless steel and polycarbonate according to figure 1 The sequence shown is placed in a jig, and the magnetically permeable stainless steel and polycarbonate are fixed, pressed and leveled using the jig. in, figure 1 Including surface layer 1, support layer 2 and connecting layer 3.

[0058] Put the jig on the electromagnetic wave furnace to heat the steel sheet to 300° C. within 0.5 to 1 second. The connection layer formed between magnetically conductive stainless steel and polycarbonate melts instantly to release internal stress.

[0059] Remove the jig for proper cooling and remove the parts to complete the shape correction.

Embodiment 2

[0061] Take a layer of magnetically conductive stainless steel, each layer is 0.5mm thick, and a layer of polypropylene, each layer is 0.8mm thick.

[0062] Combine magnetic stainless steel and polycarbonate according to figure 2 The sequence shown is placed in a jig, and the magnetically permeable stainless steel and polycarbonate are fixed, pressed and leveled using the jig. in, figure 2 Including surface layer 1, support layer 2 and connecting layer 3.

[0063] Put the jig on the electromagnetic wave furnace to heat the steel sheet to 300° C. within 0.5 to 1 second. The connection layer formed between magnetically conductive stainless steel and polycarbonate melts instantly to release internal stress.

[0064] Remove the jig for proper cooling and remove the parts to complete the shape correction.

Embodiment 3

[0066] Take a layer of magnetically conductive stainless steel, each layer thickness is 0.5mm, and a layer of ABS, each layer thickness is 0.8mm.

[0067] Combine magnetic stainless steel and polycarbonate according to image 3 The sequence shown is placed in a jig, and the magnetically permeable stainless steel and polycarbonate are fixed, pressed and leveled using the jig. in, image 3 Including surface layer 1, support layer 2 and connecting layer 3.

[0068] Put the jig on the electromagnetic wave furnace to heat the steel sheet to 300° C. within 0.5 to 1 second. The connection layer formed between magnetically conductive stainless steel and polycarbonate melts instantly to release internal stress.

[0069] Remove the jig for proper cooling and remove the parts to complete the shape correction.

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Abstract

The invention provides a preparation method of a workpiece. The preparation method comprises the following steps: providing at least one layer of first material and second material, wherein the first material has the metal characteristic, and the rigidness value of the first material is smaller than that of the second material; forming a supporting layer on the surface of the at least one layer of first material to obtain a prefabricated member; forming a surface layer through the at least one layer of first material; forming a supporting layer through the at least one layer of second material; contacting the first material with the second material; and forming the workpiece by the prefabricated member under a first condition, wherein the second material can be partially molten under the first condition. By the preparation method, after the prefabricated member is formed, no internal stress is formed between the surface layer and the supporting layer, so that the surface yield of the subsequent processing can be improved. The invention also provided with the workpiece prepared by the method and an electronic device comprising the workpiece.

Description

technical field [0001] The invention relates to the field of material processing, in particular to a workpiece, a preparation method thereof and an electronic device containing the workpiece. Background technique [0002] At present, the market has higher and higher requirements for portable electronic devices such as notebook computers to be thinner, lighter and more aesthetically pleasing, so higher requirements are also put forward for the design of notebook casings. [0003] At present, it is difficult to combine aesthetics, thinness, and mechanical properties for the casing of mobile terminals. Especially, A casings of mobile phones and PADs generally use plastic and alloy material injection molding processes to enhance the strength of A casings and increase the metal texture of the casings. Both plastic and alloy materials have deformation problems in injection molding, because plastic and alloy materials have different shrinkage rates, and internal stress will be gene...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B37/04B32B37/06H05B6/10H05K5/00
Inventor 田守东刘绍连
Owner LENOVO (BEIJING) LTD
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