CN103212915B - Boats and ships mending of iron castings method - Google Patents
Boats and ships mending of iron castings method Download PDFInfo
- Publication number
- CN103212915B CN103212915B CN201310119407.1A CN201310119407A CN103212915B CN 103212915 B CN103212915 B CN 103212915B CN 201310119407 A CN201310119407 A CN 201310119407A CN 103212915 B CN103212915 B CN 103212915B
- Authority
- CN
- China
- Prior art keywords
- welding
- weld
- soldering
- welding rod
- formation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Arc Welding In General (AREA)
Abstract
The invention discloses a kind of boats and ships mending of iron castings method, comprise the following steps: the preparatory stage: the selecting etc. of welding rod; The formation of weld groove: open weld groove, remove formation of crack, make formation of crack both ends is circular arc simultaneously; Weld seam welding: using the model of having cured is E5015, diameter is that the welding rod butt welded seam of 4mm welds, the mode of arc manipulation is the reciprocating teeter formula that adds back and forth, and reciprocating butt welded seam carries out preheating and fills up edge-melting back and forth, and teeter formula can promote the fusion on joint edge edge; Butter oil quenching. Adopt the present invention, by selection and the processing of welding rod, apply corresponding manipulation of electrode butt welded seam simultaneously and weld, key is to have used oil quenching technology, completes the soldering of common welding rod to foundry goods; Soldering cost of the present invention is low, and welding effect is good, easy to operate, is difficult for breaking down, and has shortened the time of soldering, thereby ensures carrying out in order of construction.
Description
Technical field
The present invention relates to technical field of ships, is a kind of boats and ships mending of iron castings method specifically.
Background technology
Ship structure design is tight, and cast iron welding member is more, easily causes some defects in the time of cast iron welding. Especially largeType foundry goods, under the help of simulation casting, although reduce most defect, due to actual operate miss, heightTemperature molten steel be difficult to control all can make foundry goods produce various defects, such as crackle etc., affect the performance of foundry goods. ForRepair these defects, generally adopt soldering to carry out the repairing of defect, soldering is also method for repairing and mending the most common, most convenient.
In prior art, mainly adopt welding cast iron to vulcanize and two kinds of repair weldings of cast iron cold-patch for the repair welding of cast iron welding.Cast iron heat repair is often subject to the soldering position of equipment, shelves place, and the restriction of the factor such as natural environment, simultaneously casting iron hot-weldHeating condition harshness, often show as outside heat high, the inner non-uniform phenomenon not reaching, the thickness of cast iron itself is thicker,Cooling velocity is very fast, needs side weld limit heating, and operation easier is strengthened, and easily causes the generation of white structure and causes solderingFailure. Cast iron cold-patch except to technological requirement strictly, the selection of welding material is had higher requirement, slightly not at onceMeeting soldering is failed, thereby has increased the expense of soldering, once iron weld repair failure, the difficulty of soldering is just larger again, successProbability also just lower.
For above two kinds of techniques, because it is high to technical quality and equipment requirement, time-consuming, cost is also relatively high,Meet key equipment and damage, also can cause stop work and production, cause damage to enterprise.
Summary of the invention
The technical problem to be solved in the present invention is, a kind of common welding rod electric welding that adopts is provided, and realizes low cost, technical quality is highBoats and ships mending of iron castings method.
Technical solution of the present invention is, a kind of boats and ships mending of iron castings method of following structure is provided, and comprises the following steps:
1) preparatory stage: selecting model is E4303, the welding rod that diameter is 3.2mm is as the formation of weld groove; SelectModel is E5015, and the welding rod that diameter is 4mm is done welding, and be placed on adopt in incubator 350 degrees Celsius aboveTemperature constant temperature cures 1～2 hour;
2) formation of weld groove: employing model is E4303, and the welding rod that diameter is 3.2mm is opened weld groove, removesFormation of crack, make formation of crack both ends is circular arc simultaneously;
3) weld seam welding: using the model of having cured is E5015, and the welding rod butt welded seam that diameter is 4mm welds, fortuneThe mode of bar is the reciprocating teeter formula that adds back and forth, and reciprocating butt welded seam carries out preheating and fills up edge-melting, teeter back and forthFormula can promote the fusion on joint edge edge;
4) oil quenching: in the time that weld seam operation finishes foundry goods still in red heat state, cover with butter immediately, cover at butterIn process, should be noted that the sound that has or not metal, there is no the soldering success of words of metal sound.
Adopt above method, the present invention compared with prior art has the following advantages: adopt the present invention, by the selection of welding rodAnd processing, to apply corresponding manipulation of electrode butt welded seam simultaneously and weld, key is to have used oil quenching technology, completes commonThe soldering of welding rod to foundry goods; Soldering cost of the present invention is low, and welding effect is good, easy to operate, is difficult for breaking down, and has shortenedThe time of soldering, thus carrying out in order of construction ensured.
As improvement, in step 4, when butter covers, use hammering method to carry out hammering to soldering position, eliminate welderingScoop out power and crystal grain thinning, in the time that butter is cooled to 500 degrees Celsius, stop hammering, the butter solidifying is gradually to soldering positionPlay insulation effect; The design of this step, by oil quenching and the effective combination of hammering, can effectively be removed welding stress and crystal grain thinning,Reduce the white structure of commissure, thereby improved welding effect.
As improvement, multilayer when welding, by weld interpass temperature at 200～500 degrees Celsius; Because interlayer temperature is when lower,Weld seam is cooling easy cracking under field conditions (factors), causes soldering failure, and interlayer temperature is too high, and service speed is difficult to catch up with,This number range had both improved the success rate of soldering.
Detailed description of the invention
With regard to specific embodiment, the invention will be further described below.
Boats and ships mending of iron castings method of the present invention, comprises the following steps:
1) preparatory stage: selecting model is E4303, the welding rod that diameter is 3.2mm is as the formation of weld groove; SelectModel is E5015, and the welding rod that diameter is 4mm is done welding, and be placed on adopt in incubator 350 degrees Celsius aboveTemperature constant temperature cures 1～2 hour;
2) formation of weld groove: employing model is E4303, and the welding rod that diameter is 3.2mm is opened weld groove, removesFormation of crack, make formation of crack both ends is circular arc simultaneously;
3) weld seam welding: using the model of having cured is E5015, and the welding rod butt welded seam that diameter is 4mm welds, fortuneThe mode of bar is the reciprocating teeter formula that adds back and forth, and reciprocating butt welded seam carries out preheating and fills up edge-melting, teeter back and forthFormula can promote the fusion on joint edge edge;
4) oil quenching: in the time that weld seam operation finishes foundry goods still in red heat state, cover with butter immediately, cover at butterIn process, should be noted that the sound that has or not metal, there is no the soldering success of words of metal sound.
In step 4, butter has the possibility of burning, should be noted that and increases at any time butter.
In step 4, when butter covers, use hammering method to carry out hammering to soldering position, eliminate welding stress and thinChange crystal grain, in the time that butter is cooled to 500 degrees Celsius, stop hammering, the butter solidifying gradually plays insulation to soldering position and doesWith.
Multilayer when welding, by weld interpass temperature at 200～500 degrees Celsius; Because interlayer temperature is when lower, weld seam is at natureCooling easy cracking under condition, causes soldering failure, and interlayer temperature is too high, and service speed is difficult to catch up with, therefore by interlayerTemperature is arranged in this number range.
In the time of iron weld repair, make sure to keep in mind to carry out in the excessive place of wind-force, as have the place of draught, run into wind-force largeIn the time of 2m/s, barrier should be set and stop wind or suspend soldering work.
Method of the present invention not only can, for the soldering of boats and ships itself, also be applicable on the cast steel equipment of boats and ships simultaneously, becauseIn the process of transport, may cause damage to this equipment, can adopt the method to carry out soldering to cast steel equipment.
Below only just preferred embodiment of the present invention is described, but can not be interpreted as it is limitations on claims. The present inventionNot only be confined to above embodiment, its concrete grammar allows to change. In a word, all protections in independent claims of the present inventionThe various variations of doing in scope are all in protection scope of the present invention.
Claims (2)
1. a boats and ships mending of iron castings method, is characterized in that: comprise the following steps:
1) preparatory stage: selecting model is E4303, the welding rod that diameter is 3.2mm is as the formation of weld groove; SelectModel is E5015, and the welding rod that diameter is 4mm is done welding, and be placed on adopt in incubator 350 degrees Celsius aboveTemperature constant temperature cures 1～2 hour;
2) formation of weld groove: employing model is E4303, and the welding rod that diameter is 3.2mm is opened weld groove, removesFormation of crack, make formation of crack both ends is circular arc simultaneously;
3) weld seam welding: using the model of having cured is E5015, and the welding rod butt welded seam that diameter is 4mm welds, fortuneThe mode of bar is the reciprocating teeter formula that adds back and forth, and reciprocating butt welded seam carries out preheating and fills up edge-melting, teeter back and forthFormula can promote the fusion on joint edge edge;
4) oil quenching: in the time that weld seam operation finishes foundry goods still in red heat state, cover with butter immediately, cover at butterIn process, should be noted that the sound that has or not metal, there is no the soldering success of words of metal sound;
In step 4) in, butter cover time, use hammering method hammering is carried out in soldering position, eliminate welding stress andCrystal grain thinning, in the time that butter is cooled to 500 degrees Celsius, stops hammering, and the butter solidifying gradually plays insulation to soldering positionEffect.
2. boats and ships mending of iron castings method according to claim 1, is characterized in that: when multilayer welding, by weld layerBetween temperature at 200～500 degrees Celsius.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310119407.1A CN103212915B (en) | 2013-03-28 | 2013-03-28 | Boats and ships mending of iron castings method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310119407.1A CN103212915B (en) | 2013-03-28 | 2013-03-28 | Boats and ships mending of iron castings method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103212915A CN103212915A (en) | 2013-07-24 |
| CN103212915B true CN103212915B (en) | 2016-05-04 |
Family
ID=48811247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310119407.1A Expired - Fee Related CN103212915B (en) | 2013-03-28 | 2013-03-28 | Boats and ships mending of iron castings method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103212915B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106808058A (en) * | 2017-01-22 | 2017-06-09 | 大连理工大学 | A kind of repair method of austenitic stainless steel casting core pump case |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1066015A (en) * | 1992-03-23 | 1992-11-11 | 武汉钢铁公司 | The fast welding method of ironcasting |
| CN102000922A (en) * | 2010-12-09 | 2011-04-06 | 湖南华菱湘潭钢铁有限公司 | Cast iron welding technique using cold welding and bead welding |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60221173A (en) * | 1984-04-16 | 1985-11-05 | Sumitomo Metal Ind Ltd | Production of clad pipe |
-
2013
- 2013-03-28 CN CN201310119407.1A patent/CN103212915B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1066015A (en) * | 1992-03-23 | 1992-11-11 | 武汉钢铁公司 | The fast welding method of ironcasting |
| CN102000922A (en) * | 2010-12-09 | 2011-04-06 | 湖南华菱湘潭钢铁有限公司 | Cast iron welding technique using cold welding and bead welding |
Non-Patent Citations (2)
| Title |
|---|
| 可锻铸铁汽车零件的焊补;郑樟荣;《焊接技术》;19810930(第3期);第42-44页 * |
| 涂黄油铸铁冷焊;姚如日等;《焊接技术》;19820930(第3期);第40、49页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103212915A (en) | 2013-07-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104014914B (en) | The welding method of high strength steel in Ship Structure | |
| CN102019481B (en) | Plain butt welding process for high-strength hull structural steel | |
| CN102009256B (en) | Butt welding process for high strength steel for ship structure | |
| CN106628009B (en) | A kind of mounting tool and installation method of ship opening and closing hinge | |
| CN105414878A (en) | High-heat-resistance alloy steel casting defect repair method | |
| WO2015084722A1 (en) | System and method for repair of cast component | |
| WO2015147684A1 (en) | Method for welding pipelines from high-strength pipes with controllable heat input | |
| CN105312742A (en) | Welding technology | |
| CN111318781A (en) | Repair process for repairing, welding and reinforcing cracks of engine room chassis of wind generating set | |
| JP2016117083A (en) | Repair method of casting made of aluminum alloy | |
| CN104325230A (en) | Abutting welding method for box columns of large-scale factory building | |
| CN103111734A (en) | Method and device for improving underwater wet welding joint structure property | |
| CN104625322A (en) | Large non-standard device thick-plate all-position welding method | |
| CN103212915B (en) | Boats and ships mending of iron castings method | |
| CN103962739A (en) | Method for welding grey cast iron cracks | |
| CN105108283A (en) | Method for welding dissimilar steel plate of 45 steel and ZG275-485 steel | |
| CN109317787A (en) | A kind of steel conduit all positon narrow gap TIG automatic welding process | |
| CN105127557B (en) | The medicine core gas shielded arc welding Rework Technics of marine engineering large thick steel plate under low temperature environment | |
| CN104526132B (en) | Method for preventing trunnion welding from producing delayed cracks | |
| CN109530849B (en) | Welding construction method for carbon steel pipeline in acidic environment | |
| CN111215830A (en) | Method for repairing cracks of high-pressure medium-carbon cast steel oil cylinder body with thickness larger than 200mm | |
| CN103273262B (en) | One transfer floating platform jib plate welding and shaping methods | |
| JP2016112574A (en) | Crack repair method for cast steel member | |
| CN104014946B (en) | The bevel for welding structure of Z-type aluminium alloy extrusions butt weld and welding method thereof | |
| KR20160077240A (en) | Manufacturing method for welded steel pipe having reduced hot crack |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| DD01 | Delivery of document by public notice |
Addressee: Ningbo Master Ship Design Co., Ltd. Document name: Notification of an Office Action |
|
| CB02 | Change of applicant information |
Address after: Jiangdong District Baizhang road 315040 Zhejiang city in Ningbo Province, 28 Lane 1, room 1702 International Trade Building or Cetra Building house B Applicant after: Ningbo Master Ship Design Co., Ltd. Address before: 315040 Zhejiang province Ningbo City Jiangdong Sangtian Road No. 688 5 floor Applicant before: Ningbo Master Ship Design Co., Ltd. |
|
| COR | Change of bibliographic data | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160504 Termination date: 20170328 |