Production technology for automatic low alloy steel welding wire for ship

A low-alloy steel and production process technology, used in metal processing equipment, welding media, manufacturing tools, etc., can solve the problems of increasing the softening tendency of welding heat, increase production costs, and deteriorate the working environment, and achieve good welding results. The effect of avoiding cold cracks and speeding up production efficiency

Inactive Publication Date: 2015-05-20
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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  • Production technology for automatic low alloy steel welding wire for ship

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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 production technology for an automatic low alloy steel welding wire for a ship, wherein preheating and copper plating are not needed. The production technology is characterized in that the welding wire comprises 0.02-0.1% of C, 2-4% of Mn, 2-4% of Ni, 0.5-1% of Mo, 0.5-0.8% of Si, 0-0.5% of Cu, 0-1.2% of Cr, 0-0.12% of V and 0-0.05% of Ti. The production technology comprises the steps of vacuum melting, forging, steel rolling, wire rod hot rolling, mechanical dust removal, chlorohydric acid pickling, neutral water washing, high-pressure water cleaning, alkali neutralization, boronizing, saponification with liquid soap, drying, primary cold drawing, recrystallization annealing, chlorohydric acid pickling, neutral water washing, high-pressure water cleaning, alkali neutralization, boronizing, saponification with liquid soap, drying, secondary cold drawing, chlorohydric acid pickling, neutral water washing, high-pressure water cleaning, alkali neutralization, saponification with liquid soap, brilliant polishing and drawing and rust-proof liquid 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 Applications(China)
IPC IPC(8): B23K35/40B23K35/30
CPCB23K35/40B23K35/3053
Inventor 杜晓良吴银龙
Owner JIANGSU TIANYE ALLOY MATERIAL
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