1. Striking arc: striking arc should be done at the place where the weld is formed to prevent burning the main reinforcement.
2. Positioning: when using wire cage welding machine, you should first weld positioning points and then carry on welding.
3. Manipulation of electrode: moving straight forward, horizontal swinging and sending the welding rod, these three movements should be coordinated smoothly.
Arc starting and arc stopping: When stopping the arc, the molten pool should be filled. Be careful to avoid causing arc rubbing damage on the working surface.
The two cables at the output end of the manual arc welding power supply are connected with the welding rod and the workpiece respectively, and form a closed circuit including power supply, welding cable, welding clamp and welding rod, which is so called welding circuit. The process of manual arc welding starts with the ignition of the arc. The hot arc melts the end of the electrode and the surface of the workpiece beneath the arc, forming a liquid metal part with a certain geometric shape on the weldment called the molten pool. The molten electrode core transits to the molten pool dropwise through the arc, fusing with the melted workpiece and forming a welding line after cooling and solidifying. Obviously, molten pool metal is made up of melted weldments and welding cores. During welding, the electrode coating decomposes, and gas and slag are formed after melting, which can protect the welding zone and deoxidize and purify the molten pool metal. As the arc moves forward along the welding direction, the workpiece and the weld core melt continuously to form a new tank. The original pool cools as the arc is far away from the pool. After solidification, a welding line is formed, and than the two separate weldments will be jointed into one.
November 29, 2021The application of steel bar bending machine is very extensive. It can be said that it is often used especially in the field of steel and construction. It has a lot of performance, good bending effect...view
November 9, 2018The rebar cutting machine is mainly composed of motor, belt drive mechanism, flywheel, gear deceleration mechanism, rotary key mechanism, crankshaft slider and replaceable cutter. Now it is more and m...view
June 24, 2019Production technology and quality requirements of wire cage1. The material and quality of rebar must be checked before welding wire cage by wire cage welding machine. Only after qualified, can wire ca...view
August 18, 2020Rebar cage welding machine is an organic combination of wire rod raw material layout, rebar straightening, rebar winding forming, roll welding forming, and other functions. It adopts digital automatio...view
October 13, 2018Rebar bending machine is one of the steel processing machinery. The working mechanism is a horizontal working disk that rotates on the vertical axis, and we should place the steel bar in the position ...view
October 25, 2020As a supplier of steel processing equipment industry, TJK has been committed to innovative research and development, continuous breakthrough, developing plenty of intelligent steel processing equipmen...view