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Simple electroless welding pen and preparation method of electroless welding pen

An electric welding pen, a simple technology, applied in the direction of welding equipment, welding equipment, thermite welding equipment, etc., can solve the problems of unstable welding process, pores, poor forming, incomplete separation of slag, etc., and achieve simple and fast welding operation Safety, good solderability, and easy operation

Inactive Publication Date: 2012-10-03
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of incomplete separation of slag, unstable welding process and welding defects caused by welding seam in the prior art, such as porosity and poor forming caused by instability, and to provide a Electroless Soldering Pen with Improved Flux Composition

Method used

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  • Simple electroless welding pen and preparation method of electroless welding pen
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  • Simple electroless welding pen and preparation method of electroless welding pen

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Embodiment Construction

[0029] The invention mainly utilizes the aluminothermic reaction to release a large amount of heat as a heat source, and the molten metal drops to the welding place to form a weld for welding, and provides a simple welding device for field emergency.

[0030] The composition and ratio of the heat source chemical powder of the welding pen can be designed according to the specific connection strength. The aluminothermic reaction is: 2Al+3CuO=3Cu+Al 2 o 3 +1519kJ. During welding, Al and CuO undergo a violent aluminothermic reaction. During the reaction, CuO is reduced, Al is oxidized, and a large amount of heat is released for welding.

[0031] The present invention will be described in further detail below in conjunction with examples.

[0032] like figure 1 As shown, in the simple electric-free soldering pen of the present invention, the flux 4 provided in the drug tube 2 is thermite, also known as heat source powder, and the front end of the drug tube 2 is provided with a ...

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Abstract

The invention discloses a simple electroless welding pen, which comprises a cartridge, welding flux and a lead. The welding flux is thermite; the simple electroless welding pen comprises the raw material constituents by weight percent: 60-70% of CuO (cupric oxide) powder, 15-20% of Al (aluminum) powder, 2-4% of KClO3 (potassium chlorate), 1-2% of KNO3 (potassium nitrate)+S (sulfur)+C (carbon) mixed powder, 4-6% of CaF2 (calcium fluoride) powder, 4-6% of CaSO4 (calcium sulfate) powder, 1-2% of Fe (Ferrum) powder and 1-2% of Mn (manganese) powder; and the mixed powder is KNO3, S and C freely mixed. According to the method disclosed by the invention, the problems of inexhaustive slag separation and more welding line defects in the welding lines in the prior art are solved without any welding device and power supply. The preparation method has the advantages of simple preparation process and simple, fast and safe welding operation, and is particularly suitable for field emergency operation.

Description

technical field [0001] The invention relates to a welding device, in particular to a simple electric-free welding pen for thermal flux welding and a preparation method thereof. Background technique [0002] In the existing field emergency repairs, manual arc welding and gas welding are generally used. Both welding methods require complex and heavy equipment, and both require operators to undergo strict special training. These conditions greatly limit field operations and special places. Completion of emergency welding repair tasks under extreme disaster conditions. Therefore, it is of great significance to study the emergency and rapid repair of damaged parts under the condition of no electricity and no gas in the field. The thermal flux welding that has appeared in recent years is to use the heat release of chemical reaction and its products to weld the base metal to be welded, and the flux that can undergo chemical reaction is made into a pen-shaped electrode. The heat re...

Claims

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Application Information

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IPC IPC(8): B23K23/00B23K35/362
Inventor 罗震李立峰蒋俊亮李丰任吉刚
Owner TIANJIN UNIV
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