The Method of Hot-melt Welding the Anode Guide Rod and the Steel Claw of the Electrolyzer
An anode guide rod and hot-melt welding technology, which is used in welding equipment, manufacturing tools, metal processing equipment, etc. to ensure permanent bonding, reduce pressure drop, and avoid hidden dangers in production safety.
Active Publication Date: 2019-01-04
XINJIANG JOINWORLD CO LTD
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Embodiment 1
[0023] The construction steps of the hot-melt welding of the anode guide rod of the electrolytic cell and the steel claw (aluminum steel) are as follows:
[0024] The first step is material preparation. To complete this welding process, the following materials need to be prepared: steel-aluminum hot-melt flux (flux is composed of 20wt% aluminum powder, 64wt% iron oxide powder, 2.39wt% alloy additive and the balance of slagging agent, alloy additive Chromium, silicon, manganese, slagging agent is CaF 2 or NaF), reaction crucible, heating device (preheating furnace, heating gun), water glass, asbestos wool, mud, welding frame, weld reinforced structure mold.
[0025] In the second step, the reinforced structure mold is welded to the steel claw by electrode arc welding, and multi-layer and multi-pass surfacing welding is used. The welded reinforced structure mold is as follows: figure 1 As shown, a gate for post-heat fusion welding is reserved on one side of the reinforced struc...
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Abstract
The invention discloses a thermal fusing welding method of electrolytic tank anode rods and steel claws. The method comprises following steps: a reinforced structure mold is welded to a steel claw; a steel plate is welded to the reinforced mold so that a cavity is formed between the steel plate and the mold; the cavity is filled with asbestos wool glued by waterglass; the steel claw welding surface is preheated to 700 DEG C and above and then quickly taken off and installed on a welding rack; an anode rod is put in the reinforced structure mold and then the anode rod and the steel claw are fixed; the periphery where the reinforced structure mold and the anode rod are contacted is pasted with a layer of mud; then the steel claw welding surface is heated to 1100 DEG C and above; solder is added to a crucible barrel and matches are inserted in; the crucible is fixed on the welding rack and positioned above the pouring gate; the matches are ignited so that the solder takes reaction; after pouring, the welded joint is naturally cooled, slag is removed. By means of the method, the pressure drop at a crater is reduced to 5 to 10 millivolt; the welding surface of the anode rod-steel claw is firm and will not crack so as to prevent hidden troubles.
Description
technical field [0001] The invention relates to a method for hot-melt welding an anode guide rod of an electrolytic cell and a steel claw. Background technique [0002] With the enlargement of electrolytic aluminum production scale and electrolytic cell type, the demand for electrolytic cell anode guide rods and steel claws also increases, and the welding combination of the two is a problem that cannot be ignored. [0003] As far as most domestic electrolytic aluminum manufacturers currently use prebaked anodes, the connection between the cast steel claw frame and the aluminum rod in the anode guide rod mostly adopts the connection transition method of steel-aluminum composite sheet (explosive block). The cast steel claw frame and the steel sheet in the steel-aluminum composite sheet are connected by a weld, and the strength of the steel-steel weld is basically close to the strength of the base material; the aluminum rod and the aluminum sheet in the steel-aluminum composite...
Claims
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IPC IPC(8): B23K1/00B23K1/20C25C3/12
CPCB23K1/0008B23K1/20C25C3/12
Inventor 龚泽来昌振利关鹏程陈润冬陈广禄
Owner XINJIANG JOINWORLD CO LTD