What are the benefits of ultrasonic welding?

Advantages of ultrasonic plastic welding: 1Energy saving and environmental protection 2

There is no need to equip a ventilation device for smoke dissipation 3Low cost, high efficiency 4Easy to automate production 5

High welding strength and firm bonding 6The solder joints are beautiful, can achieve seamless welding, moisture-proof and waterproof, and have good air tightness Note: Thermosetting plastics cannot be ultrasonic welded.

If it is the advantages of ultrasonic metal welding, please see.

The biggest harm to the human body is the harm of noise, and nothing else, ultrasound is a kind of mechanical wave.

1. Advantages of ultrasonic plastic welding: fast welding speed, high welding strength and good sealing; Replace the traditional welding and bonding process, low cost, clean and pollution-free and will not damage the workpiece; The welding process is stable, and all welding parameters can be tracked and monitored through the software system, which is easy to troubleshoot and maintain once a fault is found. 2. Advantages of ultrasonic metal welding:

1) The welding material is not molten and does not have fragile metal characteristics. 2) Good conductivity after welding, and the resistivity is extremely low or nearly zero. 3) The requirements for the welded metal surface are low, and oxidation or electroplating can be welded.

4) The soldering time is short, and no flux, gas or solder is required. 5) No spark in welding, environmental protection and safety. (Suzhou Nobol Machinery Equipment****).

The main thing is that the soldering efficiency is more efficient than traditional soldering, and there is no need for additional flux, and there is no high temperature and other characteristics. The disadvantage is that after all, it is friction welding, and the plastic friction of the plastic box will produce a certain amount of noise when welding, so it is recommended to operate with headphones.

benefits, use to know, ( harm?? That's just legend, if you have to put your hand under the sonotrode and step on it, then ......

The principle of ultrasonic welding is to use high-frequency vibration waves to transmit to the surfaces of two objects to be welded, and under pressure, the surfaces of the two objects rub against each other to form a fusion between molecular layers.

Ultrasonic welding is the conversion of 50 to 60 Hz current into or 40kHz of electrical energy through an ultrasonic generator. The converted high-frequency electrical energy is again converted into mechanical motion of the same frequency by means of a transducer, which is then transmitted to the sonotrode via a set of amplitude-changing rod devices that can change the amplitude. The sonotrode transfers the received vibration energy to the joint of the workpiece to be welded, where the vibration energy is converted into heat by friction to melt the plastic.

Ultrasound can be used not only to weld hard thermoplastics, but also to process fabrics and films.

The main components of an ultrasonic welding system include ultrasonic generator, transducer, luffing rod, sonotroduct, tool, tool, and frame.

The principle of ultrasonic welding.

Ultrasonic welding is a high-tech technology that can be used in all hot-melt plastic products. No.

Solvents, adhesives or other auxiliary products are required. Improve productivity, low cost, product quality and production safety.

Ultrasonic welding, which converts the mains AC [22V50Hz] into high frequency through the power supply box.

The voltage signal is then converted into high-frequency mechanical vibration through the transducer system, which is added to the plastic products to make plastic.

High-speed friction occurs between the two parts of the material and product, and the temperature rises, and when the temperature reaches the melting point of the product itself, it is processed.

The product interface melts quickly, and the product is cooled and shaped under a certain pressure, so as to achieve perfect welding.

Hope you are helpful and satisfied.

Ultrasonic welding principle: when ultrasonic waves act on the contact surface of thermoplastic plastics, it will produce tens of thousands of high-frequency vibrations per second, and this high-frequency vibration of a certain amplitude will transmit ultrasonic energy to the welding area through the upper weldment, and the welding area is the intersection of the two weldings with large acoustic resistance, so it will produce local high temperature. Due to the poor thermal conductivity of plastics, they can not be dissipated in time for a while, and they gather in the welding area, causing the contact surface of the two plastics to melt rapidly, and after adding a certain pressure, they are fused into one.

When the ultrasonic wave stops working, let the pressure continue for a few seconds to solidify and form, so that a strong molecular chain is formed, and the welding strength can be close to the strength of the raw material. The quality of ultrasonic plastic welding depends on the amplitude of the transducer sonotrod, the pressure applied and the welding time, the welding time and the pressure of the sonotrode can be adjusted, and the amplitude is determined by the transducer and the amplitude. rod decides.

There is a suitable value for the interaction of these three quantities, and when the energy exceeds the appropriate value, the melting amount of the plastic is large, and the weld is easy to deform; If the energy is small, it is not easy to weld, and the pressure applied should not be too large. This optimal pressure is the product of the side length of the welded part and the optimal pressure per 1mm of the edge Ultrasonic metal welding principle: Ultrasonic metal welding principle is a special method of connecting the same metal or different metals by using the mechanical vibration energy of ultrasonic frequency (more than 16kHz) When the metal is carried out ultrasonic welding, it neither transmits current to the workpiece, nor applies a high-temperature heat source to the workpiece, but only converts the vibration energy of the frame into friction work, deformation energy and limited temperature rise between the workpieces under static pressure The metallurgical bond between joints is a kind of solid-state welding achieved without melting the base metal Therefore, it effectively overcomes the phenomena of spatter and oxidation generated during resistance welding Ultrasonic metal welding machine can carry out single-point welding, multi-point welding and short strip welding of non-ferrous metal filaments or sheet materials such as copper, silver, aluminum, nickel and so on. It can be widely used in the welding of thyristor leads, fuse pieces, electrical leads, lithium battery pole pieces and tabs.

Advantages: 1) A wide range of weldable materials can be used for the welding of the same kind of metal materials, especially materials with high electrical conductivity and high thermal conductivity (such as gold, silver, copper, aluminum, etc.) and some refractory metals, and can also be used for the welding of dissimilar metal materials with very different properties (such as thermal conductivity, hardness, melting point, etc.), metals and non-metals, plastics and other materials, and can also realize the welding of special structures such as thickness differences and multi-layer foils.

2) The weldment is not energized, no external heating source is required, there are no macroscopic pores and other defects in the joint, brittle intermetallic compounds are not generated, and there are no problems such as molten metal splashing that is easy to occur during resistance welding.

3) The physical and mechanical properties of the weld metal do not change macroscopically, and the static load strength and fatigue strength of the welded joint are higher than the strength of the resistance welding joint, and the stability is good.

4) The oxide film or coating on the surface of the welded metal has little impact on the welding quality, and the preparation of the surface of the weldment before welding is relatively simple.

5) The electrical energy required to form the joint is less, only 5 of resistance welding; The deformation of the weldment is small.

6) There is no need to add any binders, fillers or solvents, and it has the advantages of easy operation, fast welding speed, high joint strength and high production efficiency. The main disadvantage of ultrasonic welding is that it is limited by the power of the existing equipment, so the thickness of the weldment in contact with the upper sound pole can not be too thick, and the joint form can only use lap joints, and butt joints can not be applied.

Disadvantages: One of the main disadvantages of metal ultrasonic welding is that the welding power increases exponentially with the increase of workpiece thickness and hardness, so it is only used for thin parts such as wire, foil, and sheet;

The welding technology of ultrasonic welding machine is a kind of high-tech, all hot melt plastic products can be applied, without adding solvents, pastes or other auxiliary products, improving productivity, low cost, improving product quality and production safety. Ultrasonic welding, it is through the power supply box to convert the mains into a high-frequency and high-voltage signal, and then through the transducer system to convert the signal into high-frequency mechanical vibration, added to the plastic products, so that the plastic products between the two parts of the high-speed friction, the temperature rises, when the temperature reaches the melting point of the product itself, the product interface is quickly melted, and the product is cooled and shaped under a certain pressure, so as to achieve perfect welding. Ultrasonic welding is divided into the following types:

Tools Raw materials.

Ultrasonic welding machine.

Ultrasonic transducers.

Method steps.

1. Ultrasonic spot welding.

Two flat plastic parts, no tongue or rivet, and the sonotrode is designed in the shape of a pistol, which welds one end through and fuses into the other plane. The advantage is that the welding surface does not require any special design, for large flat workpieces, the amplitude of the sonotrode is high, and the design of the sonotrode surface should be designed according to the final requirements.

2. Ultrasonic welding.

The design of a typical ultrasonic welded surface must have the following two functions:

1.The design of the tongue tenon ensures easy alignment during the welding cycle;

2.The wire is designed to be slim, but there must be enough meltable material to fuse the weld surface. The specific design method depends on the type of workpiece equipment used in welding.

Welding pressure, amplitude and other parameters can be adjusted to ensure that the welding head can contact the welding surface and apply pressure, and the lower workpiece is the part that accepts the pressure, which is placed in the bottom die and does not move. After the sonotrode stops vibrating, the pressure is maintained, so that the melting position is cooled and formed, and the whole welding time is mostly one second. This method is very widely used in industries, such as auto parts, medical, toys and stationery, etc.

3. Ultrasonic embedding.

It refers to the embedding of metal and screw wire on plastic parts. The sonotrode comes into contact with the metal nail, which is heated by vibration, causing the nail to be embedded in the plastic part.

Fourth, ultrasonic riveting.

This method is used for two plastic parts of different materials, one with one plastic rivet running through the other material, and the welding surface of the welding head is designed as a rivet coating. The high-frequency vibration generates heat that causes the plastic nail to be melted and molded and encased on another piece of material.

Ultrasound can weld metals. Common metal ultrasonic welding can be divided into spot welding, girth welding, seam welding and wire welding.

1. Spot welding. According to the vibration condition of the upper sound rod, the vibration system of the spot welding machine can be divided into longitudinal vibration (light structure) system, bending vibration (heavy structure) system and light bending vibration system, the light structure is suitable for small spot welding machines with power less than 500W, the heavy structure is suitable for kilowatt high-power welding machines, and the light bending vibration system is suitable for medium and small power welding machines, both of which have the advantages of two vibration systems.

2. Ring welding. With the ring welding method, a closed weld can be formed in one pass, and a torsional vibration system is employed. During the welding process, the vibration amplitude is symmetrical and linear relative to the acoustic rod axis, the amplitude in the axial region is zero, and the amplitude of the pad edge is the largest.

Obviously, circumference welding is most suitable for the packaging process of microelectronic devices.

3. Line welding. Wire welding can be seen as an extension of the spot welding method. In this method, a 150 mm long linear weld is obtained through a linear upper acoustic pole. This method is suitable for the wire sealing of foils.

4. Seam welding. The vibration system of the seam welding machine can be divided into according to the vibration state of its pad;

a-Longitudinal vibration system;

b- Bending vibration system;

c-Torsional vibration system and other categories.

Among them, A and B are more commonly used. The direction of vibration of its pads is perpendicular to the direction of welding. The direction of vibration of C is parallel to the direction of welding.

Seam welding can obtain a sealed continuous weld. Usually the workpiece is clamped between the upper and lower pads. In special cases, a flat plate lower sound pole can be used.

Ultrasound can weld metal. It depends on the customer's requirements.