Production method of 3G communication signal converter shell

Abstract

In order to meet the requirement of mass production, the invention provides a production method of a converter shell, which not only can quickly and effectively produce the converter shell, but also can guarantee the tightness of the product. The production method comprises the steps of: firstly casting aluminum alloy for forming; and then machining to obtain the converter shell. In casting, 620 DEC G-670 DEC G casting liquid is injected in molding cavity of a die under the pressure of 10Mpa-14Mpa, wherein the temperature of the die is 200 DEG C-220 DEG C; and when the molding cavity is full of the casting liquid, the pressure of the casting liquid is raised to 17Mpa-21Mpa.

Description

technical field

[0001] The invention relates to a preparation method of a 3G communication signal converter casing. Background technique

[0002] The communication signal converter housing used in the 3G communication network base station includes a bottom case and a cover that are sealed and contacted by a sealing ring. The main requirements are: 1. The product has high dimensional accuracy to meet the assembly and use stability; 2. The shell is sealed Due to the relatively harsh environment of communication equipment, it is required that the internal electronic components will not be damaged due to poor sealing during the life of the product.

[0003] The bottom case and cover in the original converter housing were machined from aluminum profiles by machining centers. This processing method can meet the normal precision requirements of communication equipment, and can ensure the flatness and sealing of the bottom case and the cover. However, the biggest disadvantage of t...

Examples

Embodiment Construction

[0011] At room temperature of 20 °C, the bottom case and the lid were die-cast using Al-Si alloy, and then the bottom case and the lid were machined, respectively.

[0012] The vertical high pressure casting is used for die casting, the casting pressure of the die casting machine is set to 12Mpa, the mold temperature is set to 210°C, and the temperature of the casting liquid (melt) is set to 650°C. The Al-Si alloy is put into the machine, and the injection speed used is 0.5-0.7m / s, and the casting liquid is injected into the cavity of the mold.

[0013] When the amount of casting solution injected into the cavity reaches 55% (volume ratio) of the total casting solution, the flow rate of the casting solution injected into the cavity is increased to 1.0-1.2m / s. The total amount of casting liquid refers to the amount of casting liquid required for die casting a part (including sprue, sprue, overflow well and other sprue systems).

[0014] When the casting liquid fills the cavity...

technical field

[0001] The invention relates to a preparation method of a 3G communication signal converter casing. Background technique

[0002] The communication signal converter housing used in the 3G communication network base station includes a bottom case and a cover that are sealed and contacted by a sealing ring. The main requirements are: 1. The product has high dimensional accuracy to meet the assembly and use stability; 2. The shell is sealed Due to the relatively harsh environment of communication equipment, it is required that the internal electronic components will not be damaged due to poor sealing during the life of the product.

[0003] The bottom case and cover in the original converter housing were machined from aluminum profiles by machining centers. This processing method can meet the normal precision requirements of communication equipment, and can ensure the flatness and sealing of the bottom case and the cover. However, the biggest disadvantage of t...

Examples

Embodiment Construction

[0011] At room temperature of 20 °C, the bottom case and the lid were die-cast using Al-Si alloy, and then the bottom case and the lid were machined, respectively.

[0012] The vertical high pressure casting is used for die casting, the casting pressure of the die casting machine is set to 12Mpa, the mold temperature is set to 210°C, and the temperature of the casting liquid (melt) is set to 650°C. The Al-Si alloy is put into the machine, and the injection speed used is 0.5-0.7m / s, and the casting liquid is injected into the cavity of the mold.

[0013] When the amount of casting solution injected into the cavity reaches 55% (volume ratio) of the total casting solution, the flow rate of the casting solution injected into the cavity is increased to 1.0-1.2m / s. The total amount of casting liquid refers to the amount of casting liquid required for die casting a part (including sprue, sprue, overflow well and other sprue systems).

[0014] When the casting liquid fills the cavity...

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