焊接
Meaning：Welding is the parts to be joined by个人技能
heat or pressure, two kinds of methods, and with or without filling material, so that the work piece material to form a permanent connection process. Welding craft originated at the end of nineteenth Century, is now China's treatment of gap junctions in the main way in daily life and work, play an important role in.
Classification：Welding technology is mainly ud in the ba metal, commonly ud in the electric arc welding, argon arc welding, carbon dioxide arc welding and other types, can also be ud for non metal materials attached.Metal welding method has more than 40 kinds, mainly divided into welding, welding and brazing three categories
Welding is the workpiece interface heated to a molten state, without pressure welding method.Welding, heat source to be welded workpiece interface two rapid heating and melting, forming a molten pool.Cooling after the formation of the weld two workpieces are connected into a whole.
Pressure welding is in a pressurized condition, so that the two workpiece in solid state under the interatomic binding, also known as solid state welding.Butt resistance welding is commonly ud for the pressure welding process.Welding through the heating resistor so that the temperature ri, the workpiece in the plastic state, where the workpiece is automatically connected integrally pressurizing.
Brazing is ud than the workpiece the low melting point metal material as filler, let it melt filling interface gap so as to realize the welding method, which is most widely ud in kinds of welding methods.
Technology: Welding process welding conditions, including type of groove, process parameters.Correctly handle all kinds of process links, is the perfect welding protection.Sometimes finish welding often for workpiece heat treatment, this method can improve welding performance.Welding equipment includes welding machine, welding equipment and welding auxiliary apparatus.
Special welding method: Electron beam welding: is the u of convergence of high energ
y electron beam bombardment workpiece, the kinetic energy is converted to heat, so that the welding melts to form the weld.
Ultrasonic welding: throu绿开头的成语
gh the transducer to convert electrical energy into ultrasonic bequeaths the workpiece, the workpiece friction occurs between the ultrasonic frequency, resulting in the contact surface to produce a large amount of 人头攒动的意思
heat, and under the action of external force forming welding joint.
Special welding method is a new technology of welding process with binding, is a traditional technology.
Welding technology development trend:
The future of the welding technology is th豚鼠
e automatic and intelligent crystallization, solve the poor labor conditions is the important direction.As scientists on heat source of rearch and development, a variety of emerging technology development, the future of the welding productivity will be incread veral times, the welding quality will ri.Peopl
e in the u of the soldering process, will also pay more attention to energy conrvation and environmental protection, we look forward to the traditional technology renew brilliant.
