One, overview (one) intellectual control is nodded 1, be familiar with concerned welder Cheng term, understanding solders the ABC of commonly used material; 2, pass training, preliminary gain soldering basic technology knowledge; 3, the basic idea that masters solder deliver a child to produce a course, understanding solders technical know-how, after be, course lays next foundations; 4, the safe technology knowledge that understanding solders, accomplish safe training; (2) ability training dot solders through undertaking to simple work, the welder that trains a student art analytic ability, start work operation ability, to will be engaged in manufacturing a technology henceforth the job lays next solid foundations. (3) quality develops a site 1, make through training the student builds economic viewpoint, the scientific manner of quality viewpoint and integration of theory with practice; 2, undertake to the student thought style is taught, make its abide by discipline in producing work, cherish national riches; 2, difficulty of outline key, study and dissolve a method (one) outline key 1, soldering basic idea, the sort of hand arc welding machine, tectonic, function, characteristic and use method; 2, solder the comprises Ji Rongchi composition of electric arc; 3, the composition of welding rod and action, the sort of commonly used structure welding rod, brand, meaning reachs application; 4, method of wiring of hand arc welding machine; 5, the adjustment of the electric current of manual arc welding, bring arc and destroy arc, carry reach smooth v to solder method; 6, solder commonly contact form, groove reachs soldering dimensional place; 7, the safe technology of manual arc welding. (2) study difficulty 1, solder the comprises Ji Rongchi composition of electric arc; 2, solder to choose normatively; (if solder electric current, solder angle of length of speed, electric arc, welding rod) 3, the reason of common weld defects and generation. (3) difficulty dissolves method 1, to concept of a few foundations, ground of careful, key explains; 2, through drawing a few sketch map, explain the case that those observe not easily and notes; 3, carry real operation, make theory is mixed carry out organic ground to be united in wedlock together. 3, the remarks when plan of main content goal uses form of education of education plan unit 1 classroom is tuitional soldering meaning, application and classification understand 10 minutes of citing solder of Gu of tuitional and manual report is familiar with 2 classroom master 60 minutes of draw to set an example simply 3 classroom are tuitional the contact form of welding line, dimensional position and groove comprehend 15 minutes of picture the reason of tuitional and common weld defects and generation understands 4 classroom 15 minutes draw the safe technology of tuitional arc welding understands 5 classroom 10 minutes citing the electric current of arc welding of 6 operations demonstrative handiwork adjusts, bring arc, destroy arc, carry, flat position welding and v solder the method is familiar master 20 minutes of real operations 7 students operation is Alexandrine and Alexandrine Nextpage of 1 day of exams designs a specification 1, above all tuitional soldering basic idea, apply and classify, making what the student understands is to solder, soldering classified method and particular form. And of a connecting link between the preceding and the following pointing out hand arc solder is application is the at present most general, also be other sort solders methodological foundation. 2, the characteristic that emphasizes tuitional and manual arc welding, equipment and tool, the composition of welding rod and classification, the wiring method of electric welder, the ignition of electric arc, carry and carry a method. 3, a few ABC of arc welding of theoretic understanding handiwork, still need to master diameter of electrode, solder angle of voltage of electric current, electric arc, welding rod, solder speed these are common solder how does the standard select. 4, the ABC that makes through draw the student knows welding line. (like position of contact form, space and groove and blemish) 5, do what work, installing all is the first. Through tuitional safety the technology makes if,the student is known inobservant safe operating rules, cause possibly get an electric shock, burnable, fire, explosion and toxic wait for an accident. 6, above 5 unit are the basic and academic knowledge with tuitional classroom, begin to be operated actually from the 6th unit, it is clear before the operation to should say a few notes when the operation should say a few notes when the operation, wait like discipline of safe, managing use welding rod, weldment, organization, the specification can undertake demonstrative operating later, when demonstrative operation, how do the standard soldering when the student should notice observation coachs the teacher solders choose. (if solder,electric current is reached " tierce " etc) 7, when the student is operated, begin to answer with rub of copy guidance teacher solder the movement is given priority to, leave think, find out the insufficient place when oneself solder, correct next time. 4, material prepares (with group for the unit) 1, equipment: BX1-300-1 welder 1; 2, tool: Solder clamp, face guard 2, dig hammer. 3, material: E4303 Ф 3.
2 welding electrode 2 kilograms, mild steel board 2, norms 120 × of 180 × 10. 4, realia: The standard teachs, chalk, wall map. 5, manual arc welding of 1-6 of education process unit (academic part) guide: Manual arc welding is other solders methodological foundation, in us should undertake carrying out operating in exercitation of these 3 days, it is the key of this education program so. Timeline restricts 2 hours (classroom is tuitional give priority to) . Unit 1, soldering meaning, application and classification solder is to use heat or pressurization, or heat the method of pressurization, below the case that use or does not use fill metal, make two gold nugget belong to the technique of a kind of treatment that joins together. Soldering is the indispensable advanced production technology in modern industry production, as the development of science and technology, solder technology more and more get the close attention of all trades and professions, apply extensively at orgnaization, metallurgy, electric power, boiler and pressure vessel. The manufacturing branch such as building, bridge, shipping, car, electron, aerospace, war industry and martial equipment. Soldering classified method is very much, if press,solder the position with the located metal in the process is different, but solder methodological cent is fusion welding, press solder and drill rod solder 3 kinds big, each kinds include a lot of soldering again method. Fusion welding is to soldering in the process, heat weldment connect to melt condition and not force finishs solder method. Wait like gas welding, manual arc welding. Pressing solder is to soldering in the process, use force to weldment (heat or do not heat) the method that solders in order to finish. Wait like resistance welding, friction welding. Drill rod solder is to soldering in the process, use lower than melting point of mother capable person metal stuff to make drill rod material, heat weldment and drill rod makings to expect to prep above drill rod but the temperature under melting point of mother capable person, use material of wet mother of embellish of makings of liquid state drill rod, fill up contact clearance diffuses each other with mother capable person the method that implements join weldment. Like solder of soft drill rod (heat is temperature in 450 degrees the following? Stannic solder) solder of hard drill steel (heat is temperature in 450 degrees of above? Cupreous solder) . Among them manual arc welding is application is the at present most general, also be other sort solders methodological foundation. Unit 2, manual arc welding (one) the characteristic handiwork arc welding of arc welding is to use handiwork to operate the arc welding method that welding rod has soldering, solder of abbreviation hand arc. Its characteristic: 1, equipment is simple. 2, the operation goes to the lavatory neatly. 3, can undertake whole place solders suit to solder a variety of material. 4, insufficient place is manufacturing efficiency low labor strength is great. What calls electric arc? Intense in the aeriform medium between two electrode and abiding discharge phenomenon says for electric arc, when electric arc discharges, produce high temperature on one hand, produce strong light at the same time, the high temperature that hand arc solder uses electric arc to arise namely is fused welding rod and weldment, make two detached metal fusion are together, win firm contact thereby. Hand arc solder is serve as two electrode with welding rod and weldment, be called by solder metal weldment or mother capable person. The because of electric arc high temperature when soldering makes weldment local and fused with the action that blow force. Be being gone up to form an indentation that is full of liquid metal elliptically by solder metal, this indentation calls bath. The mobile bath as welding rod forms welding line after refrigeration is caky. The case of a broken bits that welding line surface covers is called slaggy. Welding rod fuses extreme calls electric arc length to the distance of bath surface. To bath bottom from weldment surface the distance calls frit to show depth. CNC Milling