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A production process of automatic welding wire for ships

A production process and automatic welding technology, which is applied in the direction of welding medium, manufacturing tools, welding equipment, etc., can solve the problems of increasing the softening tendency of welding heat influence, deteriorating working environment, and reducing production efficiency, so as to achieve good welding effect and speed up production Efficiency, the effect of avoiding cold cracks

Active Publication Date: 2017-03-08
JIANGSU TIANYE ALLOY MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In production, preheating before welding and heat treatment after welding are usually used to avoid welding cracks, which will bring a series of problems such as complex production process, increased production cost, reduced production efficiency and deteriorated working environment, and will also increase the welding cost. Heat-affected zone softening tendency

Method used

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  • A production process of automatic welding wire for ships
  • A production process of automatic welding wire for ships
  • A production process of automatic welding wire for ships

Examples

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Effect test

Embodiment 1

[0021] The low-alloy steel automatic welding wire for ships without preheating and copper plating in this embodiment includes: C 0.02%, Mn 2%, Ni 4%, Mo 0.5%, Si 0.5%, Cu 0.2%, Cr 0.5 %, V 0.1%, Ti 0.01%; the wire diameter is drawn from Ф4.0mm to Ф1.0mm.

Embodiment 2

[0023] The low-alloy steel automatic welding wire for ships without preheating and copper plating in this embodiment includes: C 0.05%, Mn 3%, Ni 3%, Mo 0.7%, Si 0.6%, Cu 0.3%, Cr 0.6 %, V 0.06%, Ti 0.03%; the wire diameter is drawn from Ф4.0mm to Ф1.0mm

Embodiment 3

[0025] The low-alloy steel automatic welding wire for ships without preheating and copper plating in this embodiment includes: C 0.1%, Mn 4%, Ni 2%, Mo 1%, Si 0.8%, Cu 0.5%, Cr 1.2 %, V 0.12%, Ti 0.05%; the wire diameter is drawn from Ф4.0mm to Ф1.0mm.

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Abstract

The invention relates to a manufacturing technique of automatically wire welding of low alloy steel used for a ship without preheating and coppering. The manufacturing technique is characterized in that chemical composition of the welding wires comprises 0.02-0.1% of C, 2-4% of Mn, 2-4% of Ni, 0.5-0.8% of Si, 0-0.5% of Cu, 0-1.2% of Cr, and 0-0.12% of V, and 0-0.05% of Ti; the manufacturing technique comprises the steps of vacuum melting, forging, steel rolling, wire rod hot rolling, mechanical derusting, chlorohydric acid pickling, neutral washing, high pressure water cleaning, alkali neutralizing, boronizing, liquid soap saponifing, stoving, and first cold drawing; recrystallization annealing, the chlorohydric acid pickling, the neutral washing, the high pressure water cleaning, the alkali neutralizing, the boronizing, the liquid soap saponifing, the stoving, and second cold drawing; the chlorohydric acid pickling, the neutral washing, the high pressure water cleaning, the alkali neutralizing, boronizing, the liquid soap saponifing, brilliant polish drawing, and aqueous rust preventive coating.

Description

[0001] This application is a divisional application, the application number of the original application: 2012104987530, the title of the invention: a low-alloy steel automatic welding wire for ships without preheating and copper plating and its production process, and the application date: 2012-11-30. technical field [0002] The invention relates to the field of automatic welding wire preparation, in particular to a low-alloy steel automatic welding wire for ships without preheating and copper plating and a production process thereof. Background technique [0003] Low-alloy high-strength steel has good weldability, excellent formability and low manufacturing cost, so it is widely used in pressure vessels, vehicles, bridges, construction, engineering machinery, mining machinery, textile machinery, marine structures, ships, Power, petrochemical, military products and aerospace and other fields. With the increase of alloy element content, strength level and restraint degree of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/40B23K35/30
CPCB23K35/3066B23K35/3073B23K35/40B23K2103/04
Inventor 杜晓良吴银龙
Owner JIANGSU TIANYE ALLOY MATERIAL