The sound tube of the hearing aid is a commonly used component of the hearing aid, and also an important component that affects the acoustic characteristics of the hearing aid. The sound tube of a hearing aid generally refers to two uses: one is used inside various customized hearing aids, where it is connected to the speaker, which is not easy to find from the outside, and the other is a pipe that connects the ear mold channel port and the hearing aid ear hook. Therefore, in hearing aids, we mainly refer to this sound tube, of course, part of the acoustic principle of the custom machine's sound tube is also the same.

The sound tube is proprietary to BTE hearing aids. Both high-power and old-fashioned BTEs are thick sound guide tubes. This hearing aid is bulky because it is integrated with the receiver. This coarse sound tube hearing aid is also called BTE.

The sound guide tube has water vapor or water droplets. This situation is more common in winter. Due to the low outdoor temperature in winter and the temperature in the human ear canal is relatively high, hot air enters the sound guide tube from the earplug hole, and it will encounter a low temperature sound guide tube. Turning into water vapor or water droplets, over time will also affect the hearing aid hearing effect.

Precision metal processing parts are mainly reflected in batch processing. The manufacturing method and cycle of each part of the product of the precision metal processing parts are different from the ordinary product processing technology route.

There are many classifications of surgical scissors. According to the characteristics of the operation, the blades are thin and thick, long and short, super sharp, rounded, pointed, etc. There are many classifications, and the role in surgery is also different. Generally divided into: gauze bandage scissors, seam scissors, thoracoabdominal scissors, brain scissors, gynecological scissors, vascular scissors, ENT scissors, plastic scissors, anatomical scissors, fine tissue scissors, comprehensive tissue scissors, tissue scissors, surgical scissors . These are some commonly used surgical instrument classifications.

Surgical scissors: for cutting dressings, human epidermal tissues or soft tissues.​

The sound guide tube is not only a channel for sound propagation, but its shape and thickness changes will also affect the frequency response.

The inner diameter and outer diameter of the sound guide tube is one of the main factors affecting the sound propagation.

Stainless steel is the abbreviation of stainless acid-resistant steel. It is resistant to weak corrosive media such as air, steam, water or stainless steel types called stainless steel; and steel that is resistant to chemical media corrosion (acid, alkali, salt and other chemical corrosion) This is called acid-resistant steel. Due to the difference in chemical composition of the two, their corrosion resistance is different. Ordinary stainless steel is generally not resistant to chemical medium corrosion, while acid-resistant steel is generally stainless. Injection molding refers to a model with a certain shape, which is injected into the cavity of the molten state by pressure to form a mold.

With the continuous changes of society, the development of science and technology is getting better and better. Our technicians have invented various technologies to increase the speed of industrial development. MIM metal injection molding is one of them. It is convenient, so what are the main points of the process technology?

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In our lives, there are many things that are very similar, they have similar appearance and status quo, and even the names are very similar. Some people will mistakenly think they are the same, but they are not. MIM metal injection molding is One of them, is it the same as powder metallurgy molding technology?

​A good technical feature can bring different effects to the technology, and also add a large sum to its advantages. This is the technical feature and the benefits. MIM metal injection molding is one of them. What are the main technical characteristics of the MIM process? Let's take a look together.

As the era of high technology has arrived, with the development of industrial technology, our technology can be described as getting better and better, making achievements in the industry, injection molding copper-based products are one of them, then injection molding There are several methods of temperature control.

As our technicians invented a variety of products, because of the invention of various products, our industry has received various needs, and even other things, MIM metal injection molding is one of them So what kind of metal parts are suitable for metal injection molding mim processing? Let me tell you about it.

With the continuous progress of science and technology, our technology has developed more and more excellent, and it can be applied in various fields; MIM metal injection molding is one of them.So what are the five major parts of metal injection molding ?

1. Low-cost mass production of metal workpieces 2. Full free space when designing parts

​From the perspective of consumer electronics applications, MIM technology is currently mainly used in smart phone cradle, camera ring, connector interface and other components, smart wearable device case, buckle, and notebook hinge (MacBook 2016 began to use MIM Bearings), fans, etc.

​Effect of different hardness on polishing process： The increased hardness increases the difficulty of grinding, but the roughness after polishing decreases. As the hardness increases, the polishing time required to achieve a lower roughness increases accordingly. At the same time, the hardness increases and the possibility of excessive polishing decreases accordingly.

Mechanical polishing is a polishing method that obtains a smooth surface by cutting and plastic deformation of the material to remove the polished convex parts. Generally, whetstone strips, wool wheels, sandpaper, etc. are used, and manual operation is the main method. Using auxiliary tools such as turntables, those with high appearance quality can adopt the method of super-finishing and polishing.