Open-pipe weld shielding system for electric resistance welded steel pipe or tube
US-2016045974-A1 · Feb 18, 2016 · US
Method of monitoring manufacturing status of electric resistance welded pipe, device for monitoring manufacturing status of electric resistance welded pipe, and method of manufacturing electric resistance welded pipe
US10744589B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10744589-B2 |
| Application number | US-201615555039-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 17, 2016 |
| Priority date | Mar 10, 2015 |
| Publication date | Aug 18, 2020 |
| Grant date | Aug 18, 2020 |
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Abstract
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A method of monitoring a manufacturing status of an electric resistance welded pipe manufactured by shaping a steel strip into a pipe and butt welding both end parts of the steel strip in a width direction along a lengthwise direction includes: arranging an imaging unit in a gas shield nozzle having an opening opposing a region in which both of the end parts of the steel strip in the width direction are butt welded and shielding the region with inert gas by ejecting the inert gas onto the region through the opening, the imaging unit having a visual filed including the region; and determining quality of a butt-welded part based on an image shot by the imaging unit.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method of monitoring a manufacturing status of an electric resistance welded pipe manufactured by shaping a steel strip into a pipe and butt welding both end parts of the steel strip in a width direction along a lengthwise direction, the method comprising: arranging an imaging unit in a gas shield nozzle having an opening opposing a region in which both of the end parts of the steel strip in the width direction are butt welded and shielding the region with inert gas by ejecting the inert gas onto the region through the opening, the imaging unit having a visual filed including the region; and determining quality of a butt-welded part based on an image shot by the imaging unit. 2. The method of monitoring a manufacturing status of an electric resistance welded pipe according to claim 1 , wherein the opening of the gas shield nozzle is located between a position at which the steel strip starts melting and a position at which both of the end parts of the steel strip in the lengthwise direction are made to butt against each other, and the method further comprising blowing inert gas onto both of the end parts of the steel strip in the width direction through a nozzle that is different from the gas shield nozzle in a predetermined section between an induction heating start point of the steel strip and the gas shield nozzle. 3. A device for monitoring a manufacturing status of an electric resistance welded pipe manufactured by shaping a steel strip into a pipe and butt welding both end parts of the steel strip in a width direction along a lengthwise direction, the device comprising: an imaging unit arranged in a gas shield nozzle having an opening opposing a region in which both of the end parts of the steel strip in the width direction are butt welded and shielding the region with inert gas by ejecting the inert gas onto the region through the opening, the imaging unit having a visual field including the region; and an analyzing unit configured to determine quality of a butt-welded part based on an image shot by the imaging unit. 4. A method of manufacturing an electric resistance welded pipe manufactured by shaping a steel strip into a pipe and butt welding both end parts of the steel strip in a width direction along a lengthwise direction, the method comprising: arranging an imaging unit in a gas shield nozzle having an opening opposing a region in which both of the end parts of the steel strip in the width direction are butt welded and shielding the region with inert gas by ejecting the inert gas onto the region through the opening, the imaging unit having a visual filed including the region; determining quality of a butt-welded part based on an image shot by the imaging unit; and manufacturing the electric resistance welded pipe based on a result of the determining.
Assignees
Inventors
Classifications
- B23K13/00Primary
Welding by high-frequency current heating · CPC title
- B23K13/08Primary
Electric supply or control circuits therefor · CPC title
characterised by the shielding of the welding zone against influence of the surrounding atmosphere · CPC title
for welding longitudinal seams of tubes · CPC title
- B23K11/0006Primary
the welding zone being shielded against the influence of the surrounding atmosphere · CPC title
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- What does patent US10744589B2 cover?
- A method of monitoring a manufacturing status of an electric resistance welded pipe manufactured by shaping a steel strip into a pipe and butt welding both end parts of the steel strip in a width direction along a lengthwise direction includes: arranging an imaging unit in a gas shield nozzle having an opening opposing a region in which both of the end parts of the steel strip in the width dire…
- Who is the assignee on this patent?
- Jfe Steel Corp
- What technology area does this patent fall under?
- Primary CPC classification B23K13/00. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Aug 18 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).