CN102513660B - Large middle trough welding method - Google Patents
Large middle trough welding method Download PDFInfo
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- CN102513660B CN102513660B CN 201110423388 CN201110423388A CN102513660B CN 102513660 B CN102513660 B CN 102513660B CN 201110423388 CN201110423388 CN 201110423388 CN 201110423388 A CN201110423388 A CN 201110423388A CN 102513660 B CN102513660 B CN 102513660B
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Abstract
A large middle trough welding method includes: butting two side walls in assembly with a middle plate and spot-welding a plurality of small steel reinforcing rods at butt seams of the two side walls and the upper surface of the middle plate, wherein the diameter phi of each small steel reinforcing rod ranges from 8 millimeters to 12 millimeters, and the length of each small steel reinforcing rod ranges from 60 millimeters to 80 millimeters; feeding the walls and the middle plate into a preheating furnace for weld preheating, rapidly welding the walls and the middle plate after preheating and discharging, firstly welding butt seams of the two side walls and the lower surface of the middle plate, turning over a trough, welding the butt seams of the two side walls and the upper surface of the middle plate and then welding a bottom plate; and feeding the walls and the middle plate into a furnace for heat insulation after integral welding, performing ultrasonic flaw detection after discharging, repairing welding seams of unqualified products, and transferring qualified products to a next procedure for machining. The welding process of the large middle trough welding method is reasonable, welding deformation can be effectively controlled, high-quality welding seams are obtained, and further the strength and the connection dimension of a middle trough are ensured.
Description
Technical field
The present invention relates to a kind of manufacturing technology of coal mining equipment, particularly a kind of large-scale middle trough welding method.
Background technology
Present underground mechanical coal mining is equipped in world wide leading enterprise German DBT company, the long-armed company of the U.S. and Britain JOY company.There are Zhangjiakou Coal Mining Machinery Factory, northwest fleeing cattle in stampede, shanxi coal machine etc. in the large-scale drag conveyor of domestic production enterprise.China Shenhua as world-class producing coal rich and influential family, the main flow equipment of its use, especially key equipment dependence on import.The continuous increase that coal production is required along with country is also improving constantly the performance requirement of coal excavation apparatus.In prior art, wide for the chain road is that intermediate channel welding procedure more than one meter and one meter is unreasonable, can not effectively control welding deformation, can not guarantee weldquality.
Summary of the invention
The technical problem to be solved in the present invention is for the deficiencies in the prior art, has proposed a kind ofly can effectively control welding deformation, obtains the large-scale middle trough welding method of high-quality weld seam.
The technical problem to be solved in the present invention is achieved through the following technical solutions, and a kind of large-scale middle trough welding method is characterized in:
1. organize the both sides ledge docked with middle plate, the both sides ledge and above middle plate between abutment joint along the some little reinforcing rods of spot welding at abutment joint length direction interval, the diameter of little reinforcing rod is 12 millimeters of 8 millimeters-φ of φ, and is long 60-80 millimeters;
2. send into and carry out weld preheating in preheating furnace, furnace temperature is 160 ℃～225 ℃, is incubated 2 hours;
3. the preheating rear welding that begins rapidly of coming out of the stove: the following abutment joint of welding both sides ledge and middle plate, the manual backing welding of elder generation, back chipping subsequently, then carry out the welding of multilayer multiple tracks with automatic welder(welding machine);
The integrated overturn cell body, the top abutment joint of welding both sides ledge and middle plate, before weldering, the little reinforcing rod polishing of spot welding in earlier stage cleans out, and carries out the welding of multilayer multiple tracks with automatic welder(welding machine);
During welding, adopting the mist of 80%Ar+20%CO2 is protective gas, voltage 27V-32V, electric current 260A-300A;
4. weld the remaining weld seam of the following abutment joint of both sides ledge and middle plate, then weld base plate;
5. after integral body welds, advance the stove insulation, 190 ℃～240 ℃ of furnace temperature are incubated 3 hours, furnace cooling;
6. carry out ultrasonic flaw detection test after coming out of the stove, substandard product carries out Weld Seam Repairation, and qualified products are transported to next procedure and carry out mechanical process.
The present invention compared with prior art, some little reinforcing rods of first spot welding, then carry out preheating---assembly welding---insulation adopt rational welding procedure, can effectively control welding deformation, obtain high-quality weld seam, and then guarantee intensity and the size for connection of intermediate channel.
Description of drawings
Fig. 1 is the structure diagram of intermediate channel.
The specific embodiment
A kind of large-scale middle trough welding method,
Wherein in Fig. 1: 1,2 is two ledges; 3 is middle plate; 4 is base plate; 5 is little reinforcing rod.
1. organize the both sides ledge docked with middle plate, the both sides ledge and above middle plate between abutment joint along the some little reinforcing rods of spot welding at abutment joint length direction interval, the diameter of little reinforcing rod is 12 millimeters of 8 millimeters-φ of φ, and is long 60-80 millimeters; But 2 ~ 6 the little reinforcing rods of abutment joint spot welding between middle plate and every side channel are helped, remaining little reinforcing rod of equidistant spot welding preferably first one of middle spot welding, then to two ends;
2. send into and carry out weld preheating in preheating furnace, furnace temperature is 160 ℃～225 ℃, is incubated 2 hours;
3. the preheating rear welding that begins rapidly of coming out of the stove: the following abutment joint of welding both sides ledge and middle plate, the manual backing welding of elder generation, back chipping subsequently, then carry out the welding of multilayer multiple tracks with automatic welder(welding machine);
The integrated overturn cell body, the top abutment joint of welding both sides ledge and middle plate, before weldering, the little reinforcing rod polishing of spot welding in earlier stage cleans out, and carries out the welding of multilayer multiple tracks with automatic welder(welding machine);
During welding, adopting the mist of 80%Ar+20%CO2 is protective gas, voltage 27V-32V, electric current 260A-300A;
4. weld the remaining weld seam of the following abutment joint of both sides ledge and middle plate, then weld base plate;
5. after integral body welds, advance the stove insulation, 190 ℃～240 ℃ of furnace temperature are incubated 3 hours, furnace cooling;
6. carry out ultrasonic flaw detection test after coming out of the stove, substandard product carries out Weld Seam Repairation, and qualified products are transported to next procedure and carry out mechanical process.
Claims (1)
1. large-scale middle trough welding method is characterized in that:
1. organize the both sides ledge docked with middle plate, the both sides ledge and above middle plate between abutment joint along the some little reinforcing rods of spot welding at abutment joint length direction interval, the diameter of little reinforcing rod is 12 millimeters of 8 millimeters-φ of φ, and is long 60-80 millimeters;
2. send into and carry out weld preheating in preheating furnace, furnace temperature is 160 ℃～225 ℃, is incubated 2 hours;
3. the preheating rear welding that begins rapidly of coming out of the stove: the following abutment joint of welding both sides ledge and middle plate, the manual backing welding of elder generation, back chipping subsequently, then carry out the welding of multilayer multiple tracks with automatic welder(welding machine);
The integrated overturn cell body, the top abutment joint of welding both sides ledge and middle plate, before weldering, the little reinforcing rod polishing of spot welding in earlier stage cleans out, and carries out the welding of multilayer multiple tracks with automatic welder(welding machine);
During welding, adopt 80%Ar+20%CO
2Mist be protective gas, voltage 27V-32V, electric current 260A-300A;
4. weld the remaining weld seam of the following abutment joint of both sides ledge and middle plate, then weld base plate;
5. after integral body welds, advance the stove insulation, 190 ℃～240 ℃ of furnace temperature are incubated 3 hours, furnace cooling;
6. carry out ultrasonic flaw detection test after coming out of the stove, substandard product carries out Weld Seam Repairation, and qualified products are transported to next procedure and carry out mechanical process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110423388 CN102513660B (en) | 2011-12-16 | 2011-12-16 | Large middle trough welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201110423388 CN102513660B (en) | 2011-12-16 | 2011-12-16 | Large middle trough welding method |
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| CN102513660A CN102513660A (en) | 2012-06-27 |
| CN102513660B true CN102513660B (en) | 2013-06-05 |
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| CN 201110423388 Active CN102513660B (en) | 2011-12-16 | 2011-12-16 | Large middle trough welding method |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103387113B (en) * | 2013-07-02 | 2015-11-25 | 云南农垦科赛特机械制造有限公司 | A kind of production technology of scraper conveyor middle groove |
| CN103785930B (en) * | 2014-01-17 | 2016-04-20 | 宁夏天地奔牛实业集团有限公司 | The Light deformation assembling and welding process of the middle pan of scraper conveyor |
| CN105252111A (en) * | 2015-11-11 | 2016-01-20 | 宁夏天地奔牛实业集团有限公司 | Manufacturing method for mining BTW strong-toughness middle slot |
| CN105312744B (en) * | 2015-11-30 | 2017-10-20 | 天津威尔朗科技有限公司 | Middle manganese wear-resistant steel and 30MnSi chute steel gas metal-arc welding techniques |
| CN109226990B (en) * | 2018-10-23 | 2021-07-16 | 中建钢构广东有限公司 | Process method for welding embedded part by using welding robot |
| CN111408826A (en) * | 2020-05-08 | 2020-07-14 | 安徽伟宏钢结构集团股份有限公司 | Method for welding high-connection-strength crankle component |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101234694A (en) * | 2007-01-31 | 2008-08-06 | 中国国际海运集装箱(集团)股份有限公司 | Container end wall manufacturing method |
| CN102030173A (en) * | 2010-11-26 | 2011-04-27 | 连云港天明装备有限公司 | Middle groove of scraper conveyer |
| CN201942263U (en) * | 2010-11-26 | 2011-08-24 | 连云港天明装备有限公司 | Middle groove of scraper conveyor |
-
2011
- 2011-12-16 CN CN 201110423388 patent/CN102513660B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101234694A (en) * | 2007-01-31 | 2008-08-06 | 中国国际海运集装箱(集团)股份有限公司 | Container end wall manufacturing method |
| CN102030173A (en) * | 2010-11-26 | 2011-04-27 | 连云港天明装备有限公司 | Middle groove of scraper conveyer |
| CN201942263U (en) * | 2010-11-26 | 2011-08-24 | 连云港天明装备有限公司 | Middle groove of scraper conveyor |
Non-Patent Citations (4)
| Title |
|---|
| 刮板机中部槽Tandem双丝焊工艺研究与应用;韩金明等;《机械工人(热加工)》;20060109(第01期);文献第三部分试验材料及方法，表1,表2 * |
| 机器人双丝焊在中部槽焊接上的应用;颜进等;《电焊机》;20091020(第10期);全文 * |
| 韩金明等.刮板机中部槽Tandem双丝焊工艺研究与应用.《机械工人(热加工)》.2006,(第01期), |
| 颜进等.机器人双丝焊在中部槽焊接上的应用.《电焊机》.2009,(第10期), |
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| CN102513660A (en) | 2012-06-27 |
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