CN109664039A - Q890 steel plate welds dehydrogenation and weld preheating method of adjustment - Google Patents
Q890 steel plate welds dehydrogenation and weld preheating method of adjustment Download PDFInfo
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- CN109664039A CN109664039A CN201811582291.4A CN201811582291A CN109664039A CN 109664039 A CN109664039 A CN 109664039A CN 201811582291 A CN201811582291 A CN 201811582291A CN 109664039 A CN109664039 A CN 109664039A
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- Prior art keywords
- dehydrogenation
- temperature
- steel plate
- weld preheating
- adjustment
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a kind of Q890 steel plate welding dehydrogenation and weld preheating method of adjustment, each postwelding of structural member dehydrogenation immediately is welded next time immediately after dehydrogenation, and the temperature of dehydrogenation is the weld preheating temperature welded next time.The temperature of dehydrogenation is controlled at 250-300 DEG C, keeps the temperature 2-6 hours.By each postwelding of structural member dehydrogenation immediately, weld preheating process next time is saved, not only prevented the generation of postwelding hydrogen induced cracking but also saves the consumption of preheating time, electric energy.
Description
Technical field
The present invention relates to a kind of coal mine hydraulic supporting welding technique more particularly to a kind of Q890 steel plate welding dehydrogenation with
Weld preheating method of adjustment.
Background technique
In hydraulic support development process, coal mine fully-mechanized mining supporting develops to big resistance high intensity direction, steel plate material by
Q460 gradually marches toward Q890 high-strength steel, preheating temperature, welding wire matching, heat treatment etc. welding performance is influenced it is very big, in Q890 high
When strong steel plate welding, when weld seam is cooled to certain temperature, the diffusible hydrogen in weld seam is assembled at certain positions and causes to crack.
Currently, mainly being preheated by heating furnace mode, Insulation, at the hydrogen that disappears for guaranteeing welding Q890 high-strength plate
Reason.Preheating procedure is also needed before weldering next time, time, the consumption of electric energy are high.
Summary of the invention
The object of the present invention is to provide a kind of Q890 steel plate welding dehydrogenation and weld preheating methods of adjustment.
The purpose of the present invention is what is be achieved through the following technical solutions:
Of the invention Q890 steel plate welding dehydrogenation and weld preheating method of adjustment, each postwelding of structural member disappear hydrogen immediately
It handles, is welded next time immediately after dehydrogenation, the temperature of dehydrogenation is the weld preheating temperature welded next time.
As seen from the above technical solution provided by the invention, Q890 steel plate provided in an embodiment of the present invention welds the hydrogen that disappears
Processing and weld preheating method of adjustment save weld preheating work next time by each postwelding of structural member dehydrogenation immediately
Sequence had not only prevented the generation of postwelding hydrogen induced cracking but also had saved the consumption of preheating time, electric energy.
Specific embodiment
The embodiment of the present invention will be described in further detail below.What is be not described in detail in the embodiment of the present invention is interior
Appearance belongs to the prior art well known to professional and technical personnel in the field.
Q890 steel plate welding dehydrogenation of the invention and weld preheating method of adjustment, preferable specific embodiment
It is:
The each postwelding of structural member dehydrogenation immediately is welded after dehydrogenation, the temperature of dehydrogenation next time immediately
Degree is the weld preheating temperature welded next time.
The temperature of the dehydrogenation is controlled at 250-300 DEG C, keeps the temperature 2-6 hours.
Q890 steel plate welding dehydrogenation of the invention and weld preheating method of adjustment, immediately by each postwelding of structural member
Dehydrogenation, saves weld preheating process next time, not only prevented the generation of postwelding hydrogen induced cracking but also save preheating time,
The consumption of electric energy.
Coal mine fully-mechanized mining hydraulic support application Q890 high-strength steel sheet is needed since structural member is mainly based on body structure
Repeatedly group weldering could be completed, and be required to the control welding line joint performance such as preheat, be heat-treated in advance every time, since Q890 steel plate welds
Easily there is hydrogen induced cracking generation, so should carry out dehydrogenation immediately after the completion of each group weldering, temperature is controlled in 250-300
DEG C, after keeping the temperature 2-6h, effectively controls hydrogen induced cracking and generate.It after dehydrogenation, is welded next time immediately, guarantees welding temperature
Degree is exempted and shifts to an earlier date preheating procedure, after the completion of this welding sequence of structural member, then dehydrogenation carried out immediately, by following in this way
Ring operation, that is, ensure that postwelding disappear hydrogen effect again guarantee weld preheating temperature.
Key problem in technology point of the invention:
Stringent control is wanted in dehydrogenation temperature, postwelding melts down immediately, and heating guarantees the evolution of diffusible hydrogen, accords with again
Close the preheating temperature weld next time before.Period must assure that the temperature variation curve of operator's strict control heating furnace, guarantee knot
Component carries out corresponding operation in each temperature range.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Within the technical scope of the present disclosure, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Subject to enclosing.
Claims (2)
1. a kind of Q890 steel plate welding dehydrogenation and weld preheating method of adjustment, which is characterized in that each postwelding of structural member is vertical
That is dehydrogenation is welded next time immediately after dehydrogenation, and the temperature of dehydrogenation is the weld preheating welded next time
Temperature.
2. Q890 steel plate welding dehydrogenation according to claim 1 and weld preheating method of adjustment, which is characterized in that institute
The temperature for stating dehydrogenation is controlled at 250-300 DEG C, keeps the temperature 2-6 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811582291.4A CN109664039A (en) | 2018-12-24 | 2018-12-24 | Q890 steel plate welds dehydrogenation and weld preheating method of adjustment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811582291.4A CN109664039A (en) | 2018-12-24 | 2018-12-24 | Q890 steel plate welds dehydrogenation and weld preheating method of adjustment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109664039A true CN109664039A (en) | 2019-04-23 |
Family
ID=66145903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811582291.4A Pending CN109664039A (en) | 2018-12-24 | 2018-12-24 | Q890 steel plate welds dehydrogenation and weld preheating method of adjustment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109664039A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113305459A (en) * | 2021-05-20 | 2021-08-27 | 中煤北京煤矿机械有限责任公司 | Welding method for quenched and tempered steel plate with pressure of not less than 900MPa |
| TWI753773B (en) * | 2021-02-18 | 2022-01-21 | 興達海洋基礎股份有限公司 | Method for repairing weld cracks |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1974101A (en) * | 2006-12-19 | 2007-06-06 | 郑州煤矿机械集团有限责任公司 | Method of welding low alloy high strength steel |
| CN103035305A (en) * | 2012-12-10 | 2013-04-10 | 中国船舶重工集团公司第七一八研究所 | Hydrogen elimination test device |
| CN103938098A (en) * | 2014-04-21 | 2014-07-23 | 河北钢铁股份有限公司唐山分公司 | Steel pipe with ultrahigh strength and continuous production method of steel pipe |
| CN104776723A (en) * | 2015-03-20 | 2015-07-15 | 卢坤 | Environment-friendly and energy-saving production method for casting melt by using non-ferrous metal |
| US20180209010A1 (en) * | 2015-11-19 | 2018-07-26 | Karsten Manufacturing Corporation | Method of relieving stress from face plate welds of a golf club head |
-
2018
- 2018-12-24 CN CN201811582291.4A patent/CN109664039A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1974101A (en) * | 2006-12-19 | 2007-06-06 | 郑州煤矿机械集团有限责任公司 | Method of welding low alloy high strength steel |
| CN103035305A (en) * | 2012-12-10 | 2013-04-10 | 中国船舶重工集团公司第七一八研究所 | Hydrogen elimination test device |
| CN103938098A (en) * | 2014-04-21 | 2014-07-23 | 河北钢铁股份有限公司唐山分公司 | Steel pipe with ultrahigh strength and continuous production method of steel pipe |
| CN104776723A (en) * | 2015-03-20 | 2015-07-15 | 卢坤 | Environment-friendly and energy-saving production method for casting melt by using non-ferrous metal |
| US20180209010A1 (en) * | 2015-11-19 | 2018-07-26 | Karsten Manufacturing Corporation | Method of relieving stress from face plate welds of a golf club head |
Non-Patent Citations (1)
| Title |
|---|
| 卢立香等: "国家体育场Q460E及Q345GJ-D钢厚板焊接工艺", 《焊接技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI753773B (en) * | 2021-02-18 | 2022-01-21 | 興達海洋基礎股份有限公司 | Method for repairing weld cracks |
| CN113305459A (en) * | 2021-05-20 | 2021-08-27 | 中煤北京煤矿机械有限责任公司 | Welding method for quenched and tempered steel plate with pressure of not less than 900MPa |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190423 |