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Non-preheating welding wire production technology for ship

A production process and technology for ships, which is applied in the field of automatic welding wire preparation, can solve the problems of increasing the tendency of softening due to the influence of welding heat, complex production process, and deterioration of working environment, etc., to achieve good welding effect, speed up production efficiency, and simplify production process Effect

Active Publication Date: 2015-05-27
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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  • Non-preheating welding wire production technology for ship

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Embodiment 1

[0021] The chemical composition of the low-alloy steel automatic welding wire for marine use without preheating and without 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 chemical composition of the low alloy steel automatic welding wire for marine use without preheating and without 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 chemical composition of the non-preheating and non-copper-plated low-alloy steel automatic welding wire for ships 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 non-preheating welding wire production technology for ship. The production technology is characterized in that the welding wire comprise the following chemical components: 0.02-0.1 percent of C, 2-4 percent of Mn, 2-4 percent of Ni, 0.5-1 percent of Mo, 0.5-0.8 percent of Si, 0-0.5 percent of Cu, 0-1.2 percent of Cr, 0-0.12 percent of V and 0-0.05 percent of Ti. The production technology 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 neutralization, boronizing, liquid soap saponification, drying, primary cold drawing, recrystalization annealing, chlorohydric acid pickling, neutral washing, high-pressure water cleaning, alkali neutralization, boronizing, liquid soap saponification, drying, secondary cold drawing, chlorohydric acid pickling, neutral washing, high-pressure water cleaning, alkali neutralization, liquid soap saponification, polishing drawing and antirust water coating.

Description

[0001] This application is a divisional application, the application number of the original application: 2012104987530, the name of the invention: a non-preheating, non-copper-plated low-alloy steel automatic welding wire and production process for ships, application date: 2012-11-30. technical field [0002] The invention relates to the field of preparation of automatic welding wires, in particular to a low-alloy steel automatic welding wire for ships with no preheating and no 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, construction machinery, mining machinery, textile machinery, marine structures, ships, Electric power, petrochemical, military products and aerospace and other fields. With the increase of alloying element content, strength level and restraint degree...

Claims

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Application Information

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