Aluminum fabrication processing for audio amplifier panel

Audio amplifier

An audio amplifier is a device that reconstructs the input audio signal on the output element that produces the sound at an ideal volume and power level -- truthful, efficient, and low distortion. The audio range is about 20Hz to 20,000Hz, so the amplifier must have a good frequency response in this range (smaller when driving a band-limited speaker, such as a woofer or tweeter). Depending on the application, the amount of power varies widely, from milliwatts of earphones to a few watts of TV or PC audio, to tens of watts of "mini" home stereos and car stereos, to hundreds of watts or more for more powerful home and commercial sound systems, large enough to satisfy the sound requirements of an entire movie theater or auditorium.

The development of audio amplifiers has experienced three eras: vacuum tubes, bipolar transistors, and field effect tubes. A vacuum tube audio amplifier has a mellow sound, but it is bulky, has high power consumption, unstable operation, and has poor high-frequency response; a Bipolar transistor audio amplifier has a wide frequency band, and large dynamic range, high reliability, long life, and good high-frequency response. However, its static power consumption and on-resistance are very large, and its efficiency is difficult to improve. Feta audio amplifier has the same mellow tone as an electron tube, and its dynamic range is wide, more importantly, its conduction resistance is small, and can achieve high efficiency.

Aluminum product processing is the daily necessities and industrial supplies obtained by a series of processing and packaging processes with aluminum alloy as the main raw material. These aluminum products can not be without the step of deep processing. So, what is the role of aluminum product processing? What are the main methods of processing aluminum products? What is deep processing? What are the principles of deep processing? What is the last processing of aluminum products?

First of all, before understanding the processing of aluminum products, let's first understand the element aluminum. As we all know, aluminum is the most metal element in the earth's crust. It has good ductility, good flexibility, and good electrical conductivity. It can be drawn into thin wires and rolled into foils. Therefore, it is often used to produce wires and cables and to package food in food factories.

It can be used in aviation, construction, automobile, food, and other major industries. Next, let's learn about aluminum products. There are many types of aluminum products, such as casting materials, pure aluminum alloys, aluminum manganese alloys, aluminum-magnesium alloys, aluminum copper-tin alloys, and so on. There are several forms of processed aluminum products: sheet, plate, rolled sheet, strip extruded products, pipes, solid bars, profiles, and so on. Processing refers to the reproduction of aluminum products, while deep processing of aluminum products refers to the improvement of semi-finished aluminum products. This means that it can be further manufactured on the previously formed aluminum products to make its performance more reliable.

The main processing methods of aluminum products are rolling, extrusion, stretching, and forging.

Rolling

It is a plastic deformation process in which the thickness of the ingot can be reduced and the length can be increased by the friction force and the pressure exerted by the roller. There are generally three kinds of rolling: longitudinal rolling, cross rolling, and cross rolling.

Extrusion: the pressure exerted by the extrusion shaft on the metal to produce plastic deformation to obtain the desired effect.

Drawing

It is to plastically deform the aluminum and aluminum alloy blanks through the stretching machine and other machinery and equipment, to obtain the required tubes, rods, shapes, and wires. The drawing dies used can be divided into single-mode drawing and multi-mode drawing.

Forging

It is a method of making metal produce plastic deformation through the press, etc.

In addition, it can be divided into hot processing, cold processing, and warm processing.

Hot processing

It is to make aluminum and aluminum alloy ingots complete plastic deformation above the recrystallization temperature.

Cold processing

It is to make aluminum and aluminum alloy ingots complete plastic deformation below the recrystallization temperature.

Warm processing

It is a plastic deformation between hot processing and cold processing.