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A copper crucible welding method

A welding method and crucible technology, applied in the direction of welding medium, welding equipment, welding equipment, etc., can solve the problems of product quality impact, easy cracks, incomplete penetration, etc., and achieve the effect of isolating the surrounding air, less spatter, and concentrated heat

Active Publication Date: 2016-09-07
南京宝泰特种材料股份有限公司
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

However, during the welding process of red copper, defects such as cracks, pores, deformation, welding bumps, and incomplete penetration are prone to occur, and these defects have a serious impact on product quality.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] Embodiments of the present invention are further described in detail below.

[0020] A kind of red copper crucible welding method in the present embodiment, wherein: comprise the following steps:

[0021] Step 1. Preparation before welding: Clean the oxide film and oil on the welding edge of the copper crucible workpiece and the surface of the welding wire by polishing, so that the welding edge of the copper crucible workpiece and the surface of the welding wire are clean and tidy;

[0022] Step 2. Preheating and heat preservation of the copper crucible workpiece: quickly raise the temperature of the copper crucible workpiece through a resistance furnace, so that the temperature of the copper crucible workpiece reaches 550 ° C, and then lift the copper crucible workpiece out of the resistance furnace, and wrap the surface of the copper crucible workpiece with asbestos Covering for heat preservation, while using two torches to heat the copper crucible workpiece, so that ...

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Abstract

The invention discloses a red copper crucible welding method, and belongs to the technical field of red copper crucible welding. Welding joints are high in quality, air flow is protected to be stable, surrounding air can be effectively isolated, a weld pool is stable during welding, flashing is little, air holes are not generated easily, argon arc welding heat is concentrated, temperature is high, welding speed is high, and arcs are stable. When a red copper crucible is welded in an argon arc welding mode, no slag or splashing is generated, the weld pool and the electric arcs are good in resolvability, and operation is convenient.

Description

technical field [0001] The invention relates to the technical field of copper crucible welding, in particular to a copper crucible welding method. Background technique [0002] Copper crucible is the core part of non-ferrous metal smelting in vacuum consumable electric arc furnace. The crucible is 2500mm long, 660mm in diameter (inner diameter), and 30mm thick. It is tubular and weighs about 1450Kg. After casting according to quality requirements, it must be forged and rolled. Through its relatively dense metal structure, the technical requirements of high density, high current and bottom negative pressure working environment are guaranteed on the unit area. However, during the welding process of red copper, defects such as cracks, pores, deformation, welding bumps, and incomplete penetration are prone to occur, and these defects have a serious impact on product quality. Therefore, how to manufacture a copper crucible of acceptable quality is a subject that requires a lot ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/167B23K9/235B23K35/04
CPCB23K9/167B23K9/235B23K2101/12B23K2103/12
Inventor 邓宁嘉孙建戴和华蒋济仁赵永武
Owner 南京宝泰特种材料股份有限公司
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