The equipment of welding rod arc welding and tool

When the arc welding of requirement welding rod to equipment of power source of welding rod arc welding, be about to obtain solder admirably contact, want to make electric arc burns steadily above all. Element of flaming of stability of decision electric arc is very much, like composition of power source equipment, welding rod, solder standard and operation craft, among them main factor is power source equipment. Solder the energy that electric arc needs when removing arc and combustion, it is to rely on electric arc voltage and solder electric current will assure, can remove arc and steadily combustion smoothly to ensure. Requirement: (1) solder when power source is bringing arc, should furnish electric arc with taller voltage (but the safety that considers operation personnel, this tension shoulds not be too high, normally the regulation should carry voltage to be in for nothing 50-90 bend over) with lesser electric current (a few ampere) ; After ignition electric arc, stable combustion, can furnish again electric arc with inferior voltage (16-40 bend over) with bigger electric current (reach hundreds of a few amperes) . This kind of character of power source, call steep fall external characteristic. (2) solder power source is even contented and OK adjust neatly solder electric current, solder in order to satisfy the electricity that needs when the workpiece of different ply. In addition, return what should have had to use character. 2. Communicating arc solder power source to communicate arc solder power source is a kind of special step-down transformer, it has a structure simple, noise is small, low-cost, use reliable, safeguard convenient wait for an advantage. Cent of power source of communication arc solder moves iron type and the type that use a group two kinds. Arc welding machine of the BX1-300 type that move iron is the arc welding machine of a kind of communication that uses more widely at present, its appearance is shown 1 times like the graph. Communication arc welding machine but will industrial voltage (220V or 380V) reduce the 20~35V when coming to carry 60~70V, electric arc to burn for nothing. Its electric current adjusts will undertake through changing the position of mobile core. Specific operation method is to lend roll adjustment handle, indicate according to electric current dish require voltaic adjustment the cost to place. Those who move power source of solder of the arc that encircle type to pass transformer is primary will adjust with the relative position of secondary coil solder voltaic size. Graph 1 BX1-330 communicates electric current of 1- of arc welding machine to indicate dish of 2- adjustment handle (thin tone electric current) 4- of bolt of 3- ground connection solders power source is polar (receive workpiece and welding rod) 5- coil take a percentage of a deal (coarse adjustment electric current) sketch map of transformer of solder of arc of the graph 2 BX3 type that use a group 2- of 1- adjustment handle adjusts screw 3- . End of output of power source of solder of arc of dc of power source of dc arc solder has, the cent of negative pole, the electric arc when soldering two upright polarity are changeless. Arc welding machine, lose polar the wiring way that with welding rod, weldment two kinds differ: Receive weldment anode of arc welding machine, welding rod is received to negative pole, this kind receives a law to say to be being received, call positive electrode the gender again; Conversely, receive weldment negative pole, welding rod is received to positive electrode, call receive instead, call reversal the gender again. Solder thick board when, use dc to be being received commonly, because the temperature of electric arc anode and quantity of heat are higher than negative pole,this is, use receiving can obtain bigger frit deep. Solder when thin plate, wear to prevent to burn, often use receive instead. Using alkalescent when low hydrogen natrium welding rod, all use dc to be received instead. Graph the different polarity of 3 dc arc welding machine receives a standard 1) rotate type dc arc welding machine rotates type dc arc welding machine is mix by induction motor of a three-phase generation set becomes solder of arc of a dc, call arc solder the dynamo again. The graph is shown 4 times is to rotate the appearance of type dc arc welding machine. Its characteristic is the dc that can get stabilizing, accordingly, it is easy to bring arc, electric arc is stable, solder quality is better. But structure of arc welding machine of this kind of dc is complex, the price is more expensive than communicating arc welding machine much, maintenance is more difficult, the noise when using is big. Now, this kind of arc welding machine already stopped to produce in falling into disuse. Graph 4 dc arc welding machine 2) the structure of arc welding machine of dc of type of commutate of arc welding machine of rectification type dc is equivalent to adding rectifier on communication arc welding machine, turn alternating current into dc thereby. It offsetted the weakness with bad stability of electric arc of communication arc welding machine already, compare again rotate structure of type dc arc welding machine is simple, eliminated noise. Its oneself is replaced stage by stage rotate type dc arc welding machine. Transformer of solder of arc of 3) inversion type: Inversion is to point to turn into dc the process of alternating current. It can change the frequency of power source through inversion, get wanting solder undee. Its characteristic is: Increased the working frequency of transformer, make advocate the bulk of transformer is greatly contractible, convenient and mobile; Raised the power factor of power source; Have use character goodly; Splatter small, but one machine is multi-purpose, a variety of achievable soldering. Its principle block diagram is as follows: Graph the fundamental block diagram of 5 inversion power source CNC Milling CNC Machining