New generation of solid-state high frequency all-in-one machine technical description

New generation of solid-state high frequency all-in-one machine technical description

The GGP series solid state high frequency welder produced by our company mainly includes: switching rectifier cabinet, inverter output cabinet, circulating soft water cooling system, operation table, adjusting bracket five parts. The new generation of solid-state high-frequency integrated machine combines the original rectifier cabinet and inverter cabinet into one to achieve an integrated design.

01 Features of a new generation of solid-state high-frequency welder

Drive plate protection measures:

Use high-power MOSFET driver board, and DSEI 2×61-12B 60A/1200V fast recovery diode to form a series inverter circuit, increase negative pressure protection, gate detection, power detection. The three kinds of protection are independently displayed on the driver board through the LED light, and the MOS protection is more timely and reliable, avoiding the loss of secondary startup failure.

Modular design:

The solid state high frequency welding machine adopts modular design, the structure is more compact, the maintenance is more simple, and it is easier to achieve high power

Shunt protection technology:

It has a unique bridge overcurrent protection technology to ensure the safety of solid state high frequency welding machine.

Fail-safe design:

It integrates the advanced control concept of similar products in the world, adopts advanced control technology such as fixed Angle lock control and upper/lower frequency lock protection, which makes the equipment run more stable and more efficient, and the protection of inductor short circuit and open circuit fault in welding pipe production is more accurate and effective.

Energy saving design:

The input end of the solid state high-frequency welding machine does not require a booster/buck rectifier transformer, which has obvious energy-saving effect compared with the vacuum tube welding machine or parallel welding machine (compared with the vacuum tube welding machine, under the same welding conditions, saving power ≥30%).

02 Series solid high frequency welding machine main circuit structure

The main circuit structure of series solid state high frequency welder is a typical AC-DC-AC frequency conversion structure. The rectifier adopts three-phase bridge thyristor phase controlled rectifier circuit, and the DC side adopts inductor and capacitor to form LC filter to meet the working requirements of voltage inverter.

The voltage inverter adopts a modular parallel structure to expand the power supply. Each inverter module is a single-phase MOSFET bridge circuit, and each inverter module is connected by a high-frequency matching transformer and a series resonant slot. On the one hand, the matching transformer realizes the synthesis of power and impedance matching, and on the other hand realizes the electrical isolation of load and power supply.

The whole high frequency welding machine has the advantages of compact structure, small size, convenient maintenance and low failure rate. In order to effectively and quickly protect the voltage inverter overcurrent fault, Baoding Wande Company adopts a unique, stable and reliable overcurrent protection circuit to ensure the safe and reliable operation of the inverter.

03 Series solid state high frequency welder technology upgradeAppearance upgrade:

Rectifier cabinet, inverter cabinet combined into one, easy to install; The equipment adopts the bottom air intake design, and the DC cable input is fixed by the cable fixing head. The dust is not easy to enter the equipment, and the service life of the equipment is increased. At the same time, the water pipe joint is changed to flange type, and the installation is more convenient and fast.

Modular design:

The solid state high frequency welding machine adopts modular design, the structure is more compact, the maintenance is more simple, and it is easier to achieve high power.

Process technology upgrade:

Most of the market uses cheap copper bars, and our company uses tinned copper bars with better corrosion resistance and electrical conductivity after the upgrade of the control board.

The difference between tinned copper bar and ordinary copper bar lies in surface treatment. Ordinary copper bars have a surface oxide layer or sediment, which can be applied to circuit connections. The surface of the tinned copper bar is covered with a layer of tin, which has better corrosion resistance and is suitable for wet or acid and alkali environment. The tin layer covered by the surface makes the conductivity more stable and the signal transmission effect better. In contrast, ordinary copper bars require surface treatment to reduce resistance, and there are also problems such as poor contact. Tinned copper bar has good corrosion resistance and better electrical conductivity, so its market price is generally higher than that of ordinary copper bar.

04 Customer Customization

Wande company has a group of high-quality professional engineering and technical personnel, engaged in this industry for more than 20 years, with perfect scientific research and development and process design capabilities. The company has a number of invention patents, CE certification, import and export rights. Products are exported to Europe, America, South Korea, Southeast Asia and other regions, according to customer requirements and site conditions, customized exclusive equipment.

Application field:

Products are widely used in machinery, building materials, metallurgy, paper making, automobile manufacturing and other fields, fully meet the steel pipe seam welding, H-shaped steel welding, strip heating, gem melting, vacuum melting, metal melting, metal zone melting, copper pipe welding, aluminum pipe welding, steel pipe annealing, refrigerator pipe welding, metal heat treatment, brazing, hot assembly and other induction heating process requirements. It has become the main electronic control equipment for high strength pipe pile PC steel rod, aluminum-plastic pipe, wire and cable, tropical steel galvanized, hot rolling, cold rolling and other production lines.