CN103558228A - Leakage detecting agent for detecting leakage of weld joint in welding process and detection method - Google Patents
Leakage detecting agent for detecting leakage of weld joint in welding process and detection method Download PDFInfo
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- CN103558228A CN103558228A CN201310564818.1A CN201310564818A CN103558228A CN 103558228 A CN103558228 A CN 103558228A CN 201310564818 A CN201310564818 A CN 201310564818A CN 103558228 A CN103558228 A CN 103558228A
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Abstract
The invention relates to a leakage detecting agent for detecting the leakage of a weld joint in the welding process and a detection method, and is suitable for leakage detection of the weld joint, with a sealing requirement, in a pipeline, a tank body and a transformer structural member. The technical scheme is as follows: the leakage detecting agent comprises a photographic developer and a penetrating agent, wherein the photographic developer refers to a turbid liquid prepared by stirring chalk powder and industrial alcohol; the penetrating agent comprises dimethylbenzene, butanol and red oil-soluble dye through mixing. The photographic developer is coated on one surface of the weld joint through welding, the penetrating agent is coated and brushed on an unwelded part of the back surface of the weld joint after being dried, and a red spot-shaped trace is observed from the surface of the photographic developer, namely, a leakage point exists in the position. According to the leakage detecting agent and the detection method, the problems of complicated operation process of postwelding pressure leakage testing, overlong fluorescent penetrating inspection leakage detection time and low efficiency are solved. The leakage detecting agent is applied to the practice, is convenient to configure, easy to operate and high in efficiency; the photographic developer is easily wiped, and the penetrating agent automatically volatilizes without residues, and thus no influences on subsequent welding, post-treatment operation and product quality are caused.
Description
Technical field
The present invention relates to detect in a kind of welding process leak-checking agent and the detection method of welding seam leakage, be applicable to have in pipeline, tank body and transformer device structure part the leak detection of the weld seam of seal request.
Background technology
For there being the weld seam of seal request in pipeline, tank body and transformer device structure part, generally in order to detect the sealing of weld seam, adopt two kinds of methods to hunt leak, the one, air pressure leak detection, after product integral solder, be sealed into closed cavity, then inside cavity is filled with to pressurized air, after reaching certain pressure, at position while welding, brushing foam leakage testing liquid, is that this position weld seam exists breakthrough if foam appears in weld seam continuously; The 2nd, adopt the method for fluorescent penetrant to carry out weld seam leak detection.But postwelding leak detection is a kind of remedial measures and a procedure need to be set separately carry out, although and the method for fluorescent penetrating inspection is a kind of detection method in welding process but needs the time to be at least 8 hours, fluorescent penetrant is originally roasting making the greasy dirt of face of weld vapor away and could weld as also needing to utilize after oiliness leak detection in addition.Above leak hunting method exists operation time-consuming, the shortcoming that efficiency is lower.
Summary of the invention
The object of this invention is to provide the leak-checking agent and the detection method that in a kind of welding process, detect welding seam leakage, simple to operate, efficiency is high, developer is easily wiped simultaneously, bleeding agent automatically volatilization is not residual, follow-up welding, post-processing operation and product quality, without impact, are solved to the problems referred to above that background technology exists.
Technical scheme of the present invention is: in a kind of welding process, detect the leak-checking agent of welding seam leakage, comprise developer and bleeding agent two parts, developer is by 1:4 volume mixture, to stir into suspension, white liquid by whiting and industrial spirit; Bleeding agent mixes by dimethylbenzene, butanols, red oil-soluble dyes the dark red solution forming, and each constituent mass is than as follows: dimethylbenzene 70～75, butanols 25～30, red oil-soluble dyes 0.5～2.
In a kind of welding process, detect the detection method of welding seam leakage, comprise following processing step: when 1. weld seam completes in single-sided welding, removing surface is clean and surface temperature is normal temperature, first at face of weld, utilize hairbrush to brush one deck developer, developer is by 1:4 volume mixture, to stir into suspension by whiting and industrial spirit, white liquid, the white of brushing face of weld rear surface clear display; 2. after developer is dry, one deck bleeding agent is brushed at the position of not welding at the back side of weld seam, bleeding agent mixes by dimethylbenzene, butanols, red oil-soluble dyes the dark red solution forming, and each constituent mass is than as follows: dimethylbenzene 70～75, butanols 25～30, red oil-soluble dyes 0.5～2; 3. after 5-10 minute, from the surface observation of developer, whether there is red grouper point-like vestige, if there is position for this reason have breakthrough.
Good effect of the present invention: the invention solves postwelding and suppress the complex operations technique of leak test and the problem of fluorescent penetrating inspection leak detection overlong time inefficiency.This invention is applied in reality that configuration is convenient, simple to operate, efficiency is high, and developer is easily wiped simultaneously, and bleeding agent volatilizees not residual automatically, on follow-up welding, post-processing operation and product quality without impact.
Embodiment
The present invention will be further described by the following examples.
Developer is convenient to hairbrush and is brushed on welding bead after being suspension by whiting and industrial spirit mix and blend, because industrial spirit evaporation rate is fast, within approximately 5～10 minutes, on welding bead, forms the uniform white whiting coating of one deck.Penetrating fluid is mixed into dark red solution by dimethylbenzene, butanols, red oil-soluble dyes, with hairbrush, be applied to not welding position, the one side welding bead back side, utilize the superpower penetrating power of this organic solvent, approximately 5～10 minutes by capillary gap, infiltrate into developer side, make seepage place form punctation vestige at white whiting coating surface, according to this vestige, judge seepage position.Residue cleaning, developer can be wiped gently with cloth, and penetrating fluid vapored away in 10 minutes, left no trace.
In embodiment, developer configuration: whiting 1, industrial spirit 4, be by volume mixed into suspension.Bleeding agent configuration: dimethylbenzene 72, butanols 27, red oil-soluble dyes 1, mix and blend dissolves each other for dark red solution in mass ratio.
Claims (2)
1. in welding process, detect a leak-checking agent for welding seam leakage, it is characterized in that comprising developer and bleeding agent two parts, developer is by 1:4 volume mixture, to stir into suspension, white liquid by whiting and industrial spirit; Bleeding agent mixes by dimethylbenzene, butanols, red oil-soluble dyes the dark red solution forming, and each constituent mass is than as follows: dimethylbenzene 70～75, butanols 25～30, red oil-soluble dyes 0.5～2.
2. in a welding process, detect the detection method of welding seam leakage, it is characterized in that comprising following processing step: when 1. weld seam completes in single-sided welding, removing surface is clean and surface temperature is normal temperature, first at face of weld, utilize hairbrush to brush one deck developer, developer is by 1:4 volume mixture, to stir into suspension by whiting and industrial spirit, white liquid, the white of brushing face of weld rear surface clear display; 2. after developer is dry, one deck bleeding agent is brushed at the position of not welding at the back side of weld seam, bleeding agent mixes by dimethylbenzene, butanols, red oil-soluble dyes the dark red solution forming, and each constituent mass is than as follows: dimethylbenzene 70～75, butanols 25～30, red oil-soluble dyes 0.5～2; 3. after 5-10 minute, from the surface observation of developer, whether there is red grouper point-like vestige, if there is position for this reason have breakthrough.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310564818.1A CN103558228A (en) | 2013-11-14 | 2013-11-14 | Leakage detecting agent for detecting leakage of weld joint in welding process and detection method |
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| CN201310564818.1A CN103558228A (en) | 2013-11-14 | 2013-11-14 | Leakage detecting agent for detecting leakage of weld joint in welding process and detection method |
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| CN103558228A true CN103558228A (en) | 2014-02-05 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021524A (en) * | 2015-08-04 | 2015-11-04 | 大族激光科技产业集团股份有限公司 | Crack detecting method for surface of granite basic part of machine tool |
| CN105067635A (en) * | 2015-07-10 | 2015-11-18 | 国网天津市电力公司 | Power plant pressure container leakage detection method based on capillary action principle |
| CN106289665A (en) * | 2016-08-23 | 2017-01-04 | 中国大唐集团科学技术研究院有限公司华东分公司 | A kind of method utilizing tracer to search hydrogen cooled generator group leakage point online |
| CN106353337A (en) * | 2016-08-15 | 2017-01-25 | 合肥江淮铸造有限责任公司 | Detection method of nonpenetrative sand holes in engine cylinder crankcase |
| CN106567981A (en) * | 2015-10-10 | 2017-04-19 | 大亚湾核电运营管理有限责任公司 | On-line repairing method for nuclear power station metal pipeline |
| CN106768688A (en) * | 2016-11-18 | 2017-05-31 | 北京动力机械研究所 | Leakage of seal chamber detection method based on Self-expanding gas |
| CN109690276A (en) * | 2016-09-30 | 2019-04-26 | 原子能技术科学研究设计院股份公司 | Spent fuel stores pond leakage monitoring system |
| CN110108415A (en) * | 2019-05-13 | 2019-08-09 | 哈尔滨锅炉厂有限责任公司 | The kerosene leakage detection method of weld seam |
| CN110579322A (en) * | 2019-09-24 | 2019-12-17 | 开沃新能源汽车集团有限公司 | method for testing tightness of sanitation vehicle tank body |
| CN113720542A (en) * | 2020-12-23 | 2021-11-30 | 宁夏建设投资集团装饰工程有限公司 | Method for detecting stainless steel weld joint by using talcum powder |
| CN113848022A (en) * | 2021-09-24 | 2021-12-28 | 广东国鸿氢能科技有限公司 | Method for testing leakage position of graphite bipolar plate for fuel cell and method for detecting leakage of graphite bipolar plate |
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| GB763885A (en) * | 1954-07-26 | 1956-12-19 | Magnaflux Corp | Detection of surface discontinuities |
| JPS5516247A (en) * | 1978-07-22 | 1980-02-04 | Eishin Kagaku Kk | Developer for permeation flaw detection |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067635A (en) * | 2015-07-10 | 2015-11-18 | 国网天津市电力公司 | Power plant pressure container leakage detection method based on capillary action principle |
| CN105021524A (en) * | 2015-08-04 | 2015-11-04 | 大族激光科技产业集团股份有限公司 | Crack detecting method for surface of granite basic part of machine tool |
| CN106567981A (en) * | 2015-10-10 | 2017-04-19 | 大亚湾核电运营管理有限责任公司 | On-line repairing method for nuclear power station metal pipeline |
| CN106567981B (en) * | 2015-10-10 | 2019-07-05 | 大亚湾核电运营管理有限责任公司 | Nuclear power station metallic conduit is in lines mending method |
| CN106353337A (en) * | 2016-08-15 | 2017-01-25 | 合肥江淮铸造有限责任公司 | Detection method of nonpenetrative sand holes in engine cylinder crankcase |
| CN106289665A (en) * | 2016-08-23 | 2017-01-04 | 中国大唐集团科学技术研究院有限公司华东分公司 | A kind of method utilizing tracer to search hydrogen cooled generator group leakage point online |
| CN109690276A (en) * | 2016-09-30 | 2019-04-26 | 原子能技术科学研究设计院股份公司 | Spent fuel stores pond leakage monitoring system |
| EP3521789A4 (en) * | 2016-09-30 | 2020-08-12 | Joint-Stock Company Scientific Research and Design Institute for Energy Technologies Atomproekt | System for monitoring leaks of liquid from a spent fuel pool |
| CN106768688B (en) * | 2016-11-18 | 2019-05-21 | 北京动力机械研究所 | Leakage of seal chamber detection method based on Self-expanding gas |
| CN106768688A (en) * | 2016-11-18 | 2017-05-31 | 北京动力机械研究所 | Leakage of seal chamber detection method based on Self-expanding gas |
| CN110108415A (en) * | 2019-05-13 | 2019-08-09 | 哈尔滨锅炉厂有限责任公司 | The kerosene leakage detection method of weld seam |
| CN110579322A (en) * | 2019-09-24 | 2019-12-17 | 开沃新能源汽车集团有限公司 | method for testing tightness of sanitation vehicle tank body |
| CN113720542A (en) * | 2020-12-23 | 2021-11-30 | 宁夏建设投资集团装饰工程有限公司 | Method for detecting stainless steel weld joint by using talcum powder |
| CN113848022A (en) * | 2021-09-24 | 2021-12-28 | 广东国鸿氢能科技有限公司 | Method for testing leakage position of graphite bipolar plate for fuel cell and method for detecting leakage of graphite bipolar plate |
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Application publication date: 20140205 |