Hello, welcome to the official website of Hao Jing Machinery!

Classification

Search

About us      |      Product      |          Workshop      |      Contact us

Tel:15822330158 津ICP备14004814号-5
E-mail:suyuhuai@163.com
Add:Tianjin Dongli District Dabei Zhuang Dongke Park A3-13 Powered by www.300.cn



Copyright © Tianjin Hao Jing Machinery Manufacturing Co., Ltd.2013-2016 All Rights Reserved

Share :

>
>
>
Introduction of welding knowledge

Introduction of welding knowledge

Classification:
Company News
2020/05/20 10:11

Welding is done by heating, pressurizing, or both, with or without the filling material, so that the two parts produce atomic bonding between the processing technology and the connection. Welding is widely used, can be used for metal, can also be used for non-metallic.

 

What is plastic welding?

The use of heating and pressurizing or other methods to fuse two or more surfaces of a thermoplastic product into a whole is called plastic welding.

 

Introduction to welding knowledge

Welding is done by heating, pressurizing, or both, with or without the filling material, so that the two parts produce atomic bonding between the processing technology and the connection. Welding is widely used, can be used for metal, can also be used for non-metallic.

 

What is plastic welding?

The use of heating and pressurizing or other methods to fuse two or more surfaces of a thermoplastic product into a whole is called plastic welding.

 

Metal welding method

There are 40 kinds of metal welding methods, mainly divided into welding, welding and brazing three categories.

 

Welding is the welding process in the workpiece interface will be heated to the molten state, without pressure to complete the welding method. When welding, the heat source will be welding two parts of the workpiece quickly heated and melted to form a molten pool. The molten bath moves forward with the heat source, cools up to form a continuous weld and connects the two parts into one.

Pressure welding is under pressure conditions, so that the two parts in the solid state to achieve the combination of atoms, also known as solid state welding. Commonly used pressure welding process is resistance butt welding, when the current through the two parts of the connection side, where the resistance is large and the temperature rise, when heated to plastic state, under the action of axial pressure connected into one.

Brazing is the use of metal materials than the workpiece melting point of the filler metal, the workpiece and solder heated to higher than the melting point of solder, below the melting point of the workpiece temperature, the use of liquid solder wetting the workpiece, fill the interface gap and achieve with the workpiece The mutual diffusion of atoms, in order to achieve the welding method.

 

The characteristics of the current welding system

 

Mechanical device

 

IF spot welding system by the mechanical device, power supply device, control device composed of three parts. In order to meet the welding process requirements, the pressure mechanism (welding tongs) uses a double-stroke fast pneumatic transmission mechanism, by changing the stroke control handle to change the opening degree of the welding clamp, can be divided into large open and small to meet the welding operation requirements The Usually the state for the welding clamp short stroke open, when the control button to switch to the "power" position, pull the handle switch clamp clamp clamping pressure, while the current control system to complete a welding cycle to restore the short trip Open state.

 

2. Power supply unit

 

The main power circuit consists of resistance welding transformer, thyristor unit, main power switch, welding circuit and so on. At present, we use the welding equipment is the power of 200kVA, secondary output voltage of 20V single-phase power frequency AC frequency