A boiler corrugated liner welding process
A welding process and boiler technology, which is applied in welding equipment, welding medium, welding equipment, etc., can solve problems such as potential safety hazards and cracks in the welding interface, and achieve high welding stability, not easy to crack, and high safety performance.
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Embodiment 1
[0036] A boiler corrugated liner welding process, comprising the following steps:
[0037] Step 1: Rolling: The steel plate is bent into a round tube with a rolling mill, and the seams are aligned;
[0038] Step 2: Pre-welding treatment: Grinding and derusting the welding joint of the boiler before welding, and polishing until it shows metallic luster;
[0039] Step 3: Solder Handling Operation
[0040] (1) Weld from the inner side of the pipe wall, the flux is SJ501, the welding wire specification is H08MnA, and the welding thickness is 2 / 3 of the pipe wall thickness;
[0041] (2) Use carbon arc gouging to process from the outside of the pipe wall to remove welding defects;
[0042] (3) Weld from the outside of the pipe wall, the flux is SJ101, the welding wire specification is H08MnA, and the welding thickness is 3 / 5 of the pipe wall thickness;
[0043] Step 4: Grinding treatment after welding: Use a grinding tool to smooth the welding surface.
Embodiment 2
[0045] A boiler corrugated liner welding process, comprising the following steps:
[0046] Step 1: Rolling: The steel plate is bent into a round tube with a rolling mill, and the seams are aligned;
[0047] Step 2: Pre-welding treatment: before welding, the welded joints of the boiler are ground and rust-removed until a metallic luster appears, and after the welded joints are polished, clean the welded joints with a cleaning agent;
[0048] Wherein the cleaning agent comprises the following components in parts by weight, 10 parts of hydrochloric acid, 10 parts of sodium citrate, 4 parts of fatty alcohol polyoxyethylene ether, 5 parts of ethanol, 4 parts of stearate, 4 parts of octylphenol polyoxyethylene ether 10 parts, 10 parts of disodium edetate, 10 parts of sodium benzoate, 10 parts of sodium dodecylbenzenesulfonate, 50 parts of water; the mass fraction of hydrochloric acid is 5%;
[0049] Step 3: Solder Handling Operation
[0050] (1) Preheat the welding joint before we...
Embodiment 3
[0056] A boiler corrugated liner welding process, comprising the following steps:
[0057] Step 1: Rolling: The steel plate is bent into a round tube with a rolling mill, and the seams are aligned;
[0058] Step 2: Pre-welding treatment: before welding, the welded joints of the boiler are ground and rust-removed until a metallic luster appears, and after the welded joints are polished, clean the welded joints with a cleaning agent;
[0059] Wherein the cleaning agent comprises the following components in parts by weight, 11 parts of hydrochloric acid, 11 parts of sodium citrate, 4 parts of fatty alcohol polyoxyethylene ether, 6 parts of ethanol, 4 parts of stearate, 4 parts of octylphenol polyoxyethylene ether 11 parts, 11 parts of disodium edetate, 11 parts of sodium benzoate, 11 parts of sodium dodecylbenzenesulfonate, 55 parts of water; the mass fraction of hydrochloric acid is 5%;
[0060] Step 3: Solder Handling Operation
[0061] (1) Preheat the welding joint before we...
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