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Surface treating method

A surface treatment and treatment method technology, which is applied in the field of surface treatment that can improve surface properties, can solve problems such as low toughness, coarse crystal grains in product shells, and affect product surface brightness and smoothness, so as to improve surface brightness and improve product surface performance effect

Inactive Publication Date: 2009-02-18
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the traditional process of quenching and cooling to room temperature, the grains of the product shell are relatively coarse, which not only affects the brightness and smoothness of the product surface, but also has low toughness, which cannot meet the requirements of consumers.

Method used

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  • Surface treating method

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Embodiment Construction

[0010] The surface treatment method of the present invention is applied to improve the appearance of the plastic casing of consumer electronic products.

[0011] The surface treatment method improves the brightness and smoothness of the plastic surface through rapid quenching and rapid tempering processes, and improves its toughness. The surface treatment method is described below in conjunction with specific diagrams.

[0012] See figure 1 , the quenching and tempering temperature curve control is applied to the pre-injection molding stage of the plastic shell. T 2 stands for the plastic-glass transition temperature, T R represents the indoor temperature, T q Represents the quenching temperature, Ta represents the tempering temperature. The plastic raw material is first loaded into the barrel of the injection molding machine in the form of plastic particles, and is heated to the molten state of the plastic. The temperature of the molten plastic is usually about 300°C. At ...

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Abstract

The invention relates to a surface treatment method, which is applied to plastics. The treatment method comprises the following steps of lowering a plastic melting temperature to a glass conversion temperature of the plastics, carrying out pressure maintaining treatment to the plastics at the glass conversion temperature, lowering the glass conversion temperature of the plastics to a quenching temperature, heating from the quenching temperature to a tempering temperature and then cooling from the tempering temperature to an indoor temperature, wherein the quenching temperature is about 5 to 50 DEG C lower than the indoor temperature. The treatment method can effectively improve the surface properties of plastic products, and effectively improves the surface brightness, smoothness and fracture toughness of the products.

Description

[0001] This application is a divisional application of the patent application No. 200510037359.7. The filing date of patent application No. 200510037359.7 is September 16, 2005, and the title is "Surface Treatment Method". technical field [0002] The invention relates to a surface treatment method, in particular to a surface treatment method capable of improving surface properties. Background technique [0003] With the development of technology, the market competition of consumer electronic products is becoming more and more fierce. In order to attract consumers to purchase electronic products, in addition to the functions of the product, the appearance of the product has become one of the key factors for the success or failure of the product. [0004] Commonly used consumer electronic product casings are often made of plastic materials. The surface of the plastic is rough and dull when untreated, which affects the appearance of the product. Abrasion resistance is also i...

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Application Information

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IPC IPC(8): B29C71/02
Inventor 陈杰良
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD