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The Method of Welding Butt Welding Seam of Small Diameter Cylinder with Ordinary Submerged Arc Automatic Welding Machine

A submerged arc automatic welding machine and butt weld technology, applied in welding equipment, welding accessories, arc welding equipment, etc., can solve the problems of low manual welding efficiency, poor economy, unreliable welding quality, etc.

Active Publication Date: 2016-06-29
SHIFANG TONGJIA MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The efficiency of manual welding is low, and the welding quality is unreliable; the purchase of a special submerged arc automatic welding machine is expensive. For manufacturers, small-diameter cylinder welding is rare after all, and the utilization rate of equipment is too low, and the economy is too poor

Method used

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  • The Method of Welding Butt Welding Seam of Small Diameter Cylinder with Ordinary Submerged Arc Automatic Welding Machine
  • The Method of Welding Butt Welding Seam of Small Diameter Cylinder with Ordinary Submerged Arc Automatic Welding Machine
  • The Method of Welding Butt Welding Seam of Small Diameter Cylinder with Ordinary Submerged Arc Automatic Welding Machine

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Experimental program
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Effect test

Embodiment 1

[0026] see figure 1 , figure 2 As shown, the method of welding small-diameter cylinder butt welds with an ordinary submerged arc automatic welding machine is used to manufacture a flux protection box 2 (made of steel plates with a thickness of 5mm), and the flux protection box 2 (this flux protection box 2 starts from To prevent the flux from slipping and make the flux play a protective role) it is an arc-shaped open box, and the radius of the opening arc is equal to the radius of the outer wall of the small-diameter cylinder 3 (that is, the joint between the flux protection box 2 and the outer wall of the small-diameter cylinder 3 is The cavity has an arc-shaped opening, and the opening box body is composed of an upper cover plate, left and right side panels, and front and rear side panels together to form an integral structure, wherein the upper cover plate is fixedly connected with one end of the flux protection box boom 6, and the other end is connected with the splint 7...

Embodiment 2

[0030] see figure 1 , figure 2 As shown, the method of welding small-diameter cylinder butt welds with an ordinary submerged arc automatic welding machine is used to manufacture a flux protection box 2 (made of steel plates with a thickness of 5mm), and the flux protection box 2 (this flux protection box 2 starts from To prevent the flux from slipping and make the flux play a protective role) it is an arc-shaped open box, and the radius of the opening arc is equal to the radius of the outer wall of the small-diameter cylinder 3 (that is, the joint between the flux protection box 2 and the outer wall of the small-diameter cylinder 3 is The cavity has an arc-shaped opening, and the opening box body is composed of an upper cover plate, left and right side panels, and front and rear side panels together to form an integral structure, wherein the upper cover plate is fixedly connected with one end of the flux protection box boom 6, and the other end is connected with the splint 7...

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Abstract

Disclosed is a method of a common automatic submerged-arc welding machine for welding small-diameter barrel butting seams. A welding flux protection box is manufactured. The welding flux protection box is an arc-shaped opening box, the radius of the opening arc is equal to the radius of the outer wall of a small-diameter barrel, the welding flux protection box is fixed on a welding stick duct, the opening of the welding flux protection box is fitted to the outer wall of the small-diameter barrel, and a welding seam bath is covered. The relative position of the welding stick duct and the small-diameter barrel is adjusted, and an arcing point of a welding arc reversely offset by 15+ / -1 degrees along the revolving direction of the small-diameter barrel. The method for welding includes steps of (1) bottoming argon arcs manually, filling one to two layers by manual argon arcs so as to guarantee no burn-through during submerged-arc welding; (2) filling weld grooves and capping by union melt welding.

Description

technical field [0001] The invention relates to a method for welding small-diameter cylinder butt welds with an ordinary submerged arc automatic welding machine, which belongs to the field of welding technology. Background technique [0002] There are two problems in the automatic welding process of small diameter cylinder butt welds: [0003] 1. At normal welding speed, due to the small diameter of the workpiece, the cutting speed of the circumferential line is faster when rotating, which causes the flux on the welding surface of the workpiece to roll off quickly, and loses the protective effect on the weld pool. [0004] 2. Since the smaller the diameter, the larger the curvature, and the faster the linear cutting speed on the surface of the cylinder when the workpiece rotates. Therefore, the deposited metal in the welding pool has no time to solidify and flows downward along the ring seam under the action of gravity, thereby forming defects such as pits on the surface of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/18B23K9/32B23K9/173
CPCB23K9/167B23K9/182B23K9/32
Inventor 刘安全曾婕曾雨清刘成刚
Owner SHIFANG TONGJIA MACHINERY