CN103506763A - Manufacturing method of welding type cylinder block of marine diesel engine - Google Patents
Manufacturing method of welding type cylinder block of marine diesel engine Download PDFInfo
- Publication number
- CN103506763A CN103506763A CN201210582880.9A CN201210582880A CN103506763A CN 103506763 A CN103506763 A CN 103506763A CN 201210582880 A CN201210582880 A CN 201210582880A CN 103506763 A CN103506763 A CN 103506763A
- Authority
- CN
- China
- Prior art keywords
- cylinder block
- platform
- assembling
- line
- base plate
- 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.)
- Pending
Links
Images
Classifications
-
- 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
-
- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
Abstract
The invention discloses a manufacturing method of a welding type cylinder block of a marine diesel engine. The method comprises the steps of (1) drawing lines on a platform, (2) assembling a box body of the cylinder block, (3) assembling a triangular tube plate, and (4) assembling a scavenging device. According to the manufacturing method of the welding type cylinder block of the marine diesel engine, production cost is reduced; due to the fact that the structure of the welding type cylinder block is a combination of a cylinder block body and a scavenging collecting pipe, the machining amount of the cylinder block and the scavenging pipe is greatly reduced, the workload for secondary assembly is greatly reduced, assembly errors are reduced, the defect that cold cracks appear easily during casting is overcome, defect repairing is easy, and the discarding rate of cylinder blocks is reduced.
Description
Technical field
The marine diesel cylinder block technical field the present invention relates to, specifically a kind of preparation method of marine diesel welded type cylinder block.
Background technology
Marine diesel cylinder block is at present domestic is all to adopt Foundry Production, because easily producing the defects such as cold crack in production process, is not easy soldering, there is aberration in soldering region, even if soldering is also very difficult, has certain scrappage, machined dust is larger, thereby causes the increase of production cost.
Welded type cylinder block is MAN B& The design form that W company is up-to-date, complex structure, welding requirements is high.Maximum feature is compared welded type cylinder block with casting can weight reduction 1/3, can significantly reduce the cost of manufacture of cylinder block.
The structure of welded type cylinder block is the combination of cylinder block body and scavenging collector, such design can reduce the amount of machining of cylinder block and scavenging air pipe and workload and the rigging error of middle secondary assembling in a large number, after further investigation, draw, the Focal point and difficult point of welded type cylinder block is:
1, in the design of welded type cylinder block, there is the super thick panel that a thickness is 225mm, it is the key that affects the even contraction distortion of welded type cylinder block overall structure, and it is all EN601M Q3 requirement that the weld seam of connected part requires, polishing requires circular arc R transition.
2, in cylinder block, have triangular pipe plate structure, thickness of slab is 16mm, and because of single face welding and double face shaping, therefore require there is higher assembly precision, 3mm ± 0.5, fit-up gap, guarantees the reliable of weld seam welding quality.
3, because thickness of slab drop is larger, there is larger welding stress in structure, and butt welded seam anti-fatigue life has considerable influence.
4, scavenging arrangement is that thickness of slab is the cylindrical shell of 10mm left and right mostly, yielding during welding, the allowance for shrinkage that strictly control assembling well and weld.
Summary of the invention
The object of the invention is to overcome welded type cylinder block welding equipment problem in above-mentioned prior art, a kind of marine diesel welded type cylinder block preparation method is provided, reduce production and processing cost.
In order to reach foregoing invention object, technical scheme provided by the invention is as follows:
A preparation method for marine diesel welded type cylinder block, its feature is, it is as follows that the method comprising the steps of:
Step 2, assembling cylinder block casing;
Step 3, assembling triangle tube sheet;
Step 4, assembling scavenging arrangement.
Described assembling cylinder block casing, specifically comprises the steps:
2.1, mounting base: according to the base plate line on platform, base plate is placed on platform, and base plate is fixed on platform, then the line on platform is refuted on base plate;
2.2, median septum is installed: according to median septum line, median septum is fixed on base plate;
2.3, the first side plate and the second side plate are installed;
2.4, the first cross web and the second cross web are installed successively on base plate;
2.5, installation panel;
2.6, weld above-mentioned each parts and form cylinder block casing.
Described assembling scavenging arrangement, specifically comprises the steps:
4.1, in identical platform, proofread and correct two cross webs, make it vertical with platform;
4.2, scavenging air pipe cylindrical shell is assemblied between the first cross web and the second cross web.
Compare with existing cast type cylinder block technology, welded type cylinder block beneficial effect of the present invention is to reduce production and processing cost, the structure of welded type cylinder block is the combination of cylinder block body and scavenging collector, reduces in a large number the amount of machining of cylinder block and scavenging air pipe and workload and the rigging error of middle secondary assembling.Reduced because easily producing the defect of cold crack etc. in casting process, and defect mending ratio is easier to, reduced the scrappage of cylinder block.
Accompanying drawing explanation
Fig. 1 platform line schematic diagram.
Each parts scheme of installation of Fig. 2 cylinder block casing.
Fig. 3 triangle tube sheet scheme of installation.
Fig. 4 scavenging arrangement scheme of installation.
Fig. 5 welded type cylinder body assembly schematic diagram.
The specific embodiment
Below in conjunction with drawings and Examples, the preparation method of marine diesel welded type cylinder block of the present invention is described in further detail, but can not limits the scope of the invention with this.
1.1, the levelness of verifying bench first before line, and (guarantee within the scope of 12 meters of 6 meters of the width of platform and length, horizontal gradient error≤2mm), because the levelness of platform will directly affect the allowance of part perpendicularity and the end, panel.
1.2 determine the datum level of platform assembling cylinder block, that is: take the base plate of cylinder block is datum level, then determine the installation line of platform upper cylinder body, see Fig. 1: longitudinal centre line, cross central line, median septum relative contour, the first cross web relative contour, the second cross web relative contour, the first side plate thickness line and the second side plate thickness line etc.
During line, should notice that scale error requires:
Scale error≤the 0.5mm of A, institute's own centre line.
B, each hookup wire scale error≤1mm.
C, according to experience and the research to cylinder block drawing of the welding of diesel engine base, rack, for guaranteeing that the every cylinder cylinder distance of contraction distortion that postwelding causes because of factors such as welding, firer's corrections places the allowance for shrinkage of 1mm.
Step 2, assembling cylinder block casing, be shown in Fig. 2.
2.1, mounting base: base plate is placed on platform according to the base plate line on platform, and base plate is fixed on platform, then the line on platform is copied on base plate and (at base plate, ruling, line content and position are consistent with the line on platform), comprise: cross central line line, median septum line, the first cross web line, the second cross web line, the first side plate line and the second side plate line etc., to facilitate installation.
2.2, median septum is installed: according to median septum line, median septum is fixed on base plate to deviation≤1mm.
Median septum and base plate will be close to herein, and local gap is not more than 2mm(and exceeds standard because excesssive gap can cause the height of median septum, and the distortion of base plate local contraction is excessive).
2.3, the first side plate and the second side plate are installed: according to the size of cross web, control angle of inclination and the installation dimension of the first side plate and the second side plate, in order to avoid affect subsequent installation.
2.4, the first cross web and the second cross web are installed successively on base plate.
2.5, installation panel: panel (ultra-thick plate) is placed on platform, the first side plate line and the line of the second side plate are copied on panel.
The height dimension of check median septum, side plate, cross web, if too high, should repair in time surplus, check cross web and Ju center, panel junction size, also will repair corresponding surplus if be less than the half-breadth of panel, makes panel can embed smoothly and guarantee relative dimensions.
Lifting panel, because the attachment weld of side plate, median septum and thick panel all requires the level into Q3, require carbon plane back chipping, welding capacity is also larger, contraction distortion is also just large, according to the experience having in diesel engine base, frame, thus in short transverse, place 2mm allowance for shrinkage, to guarantee that postwelding overall height dimension meets drawing requirement.
2.6, each parts form cylinder block casing, transfer welding.Welding sequence, from base plate to panel direction, adopts electrical heating method that panel is preheated to 150 ℃.What be connected with super thick panel has median septum, side plate and a cross web, according to median septum and side plate groove type, requires large groove welding, reverse side clivia mouth carbon plane.Frequent standing up in welding process like this, has reduced welding deformation.
2.7, welding finishes rear line examination, and firer's correction, notes it must being same mounting plate during line.
Step 3, assembling triangle tube sheet, be shown in Fig. 3.
Calculate the installation dimension of triangle tube sheet upper and lower opening, mark corresponding assembly line on the first side plate, the second side plate, the first cross web and the second cross web after, triangle tube sheet is installed, welding requirements is single face welding and double face shaping, while welding with welding wire in the front of groove, will groove just, carry on the back two faces and can obtain well-balanced, be shaped good, the weld seam conforming to quality requirements.
Step 4, assembling scavenging arrangement, be shown in Fig. 4.
4.1, the positive cross web of identical platform colonel makes it vertical with platform.Because scavenging air pipe cylindrical shell is to be assemblied between the first cross web and the second cross web, must proofread and correct cross web to optimum size.
4.2, scavenging air pipe cylindrical shell is installed: on cross web, mark the hookup wire of scavenging air pipe cylindrical shell, every scavenging air pipe cylindrical shell concentricity installation deviation≤± 1mm.For scavenging air pipe cylindrical shell can be embedded smoothly, during lifting scavenging air pipe cylindrical shell, should guarantee that scavenging air pipe cylindrical shell is vertical with platform as far as possible.Because of scavenging air pipe cylindrical shell and cross web weld requirement carbon plane back chipping, welding contraction distortion is large, so cylinder is apart from placing 1mm, adopts double-sided symmetrical back welding to weld to reduce welding contraction distortion during welding.
Claims (3)
1. a preparation method for marine diesel welded type cylinder block, is characterized in that, it is as follows that the method comprising the steps of:
Step 1, platform line;
Step 2, assembling cylinder block casing;
Step 3, assembling triangle tube sheet;
Step 4, assembling scavenging arrangement.
2. the preparation method of marine diesel welded type cylinder block according to claim 1, is characterized in that, described assembling cylinder block casing, specifically comprises the steps:
2.1, mounting base: according to the base plate line on platform, base plate is placed on platform, and base plate is fixed on platform, then the line on platform is refuted on base plate;
2.2, median septum is installed: according to median septum line, median septum is fixed on base plate;
2.3, the first side plate and the second side plate are installed;
2.4, the first cross web and the second cross web are installed successively on base plate;
2.5, installation panel;
2.6, weld above-mentioned each parts and form cylinder block casing.
3. the preparation method of marine diesel welded type cylinder block according to claim 1, is characterized in that, described assembling scavenging arrangement, specifically comprises the steps:
4.1, in identical platform, proofread and correct two cross webs, make it vertical with platform;
4.2, scavenging air pipe cylindrical shell is assemblied between the first cross web and the second cross web.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210582880.9A CN103506763A (en) | 2012-12-28 | 2012-12-28 | Manufacturing method of welding type cylinder block of marine diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210582880.9A CN103506763A (en) | 2012-12-28 | 2012-12-28 | Manufacturing method of welding type cylinder block of marine diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103506763A true CN103506763A (en) | 2014-01-15 |
Family
ID=49890474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210582880.9A Pending CN103506763A (en) | 2012-12-28 | 2012-12-28 | Manufacturing method of welding type cylinder block of marine diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103506763A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104097195A (en) * | 2014-07-03 | 2014-10-15 | 沪东重机有限公司 | Three-dimensional scribing method for large-scale diesel engine rack |
| CN109396762A (en) * | 2018-11-09 | 2019-03-01 | 中船海洋动力部件有限公司 | The assembly method of marine diesel exhaust gas recirculation device shell |
| CN109909631A (en) * | 2019-03-20 | 2019-06-21 | 海洋石油工程（青岛）有限公司 | The building technology of super large wall thickness overlength multiple tube manifold |
| CN112706897A (en) * | 2020-11-29 | 2021-04-27 | 中船海洋动力部件有限公司 | Assembly process method of marine diesel engine base |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101497151A (en) * | 2008-01-31 | 2009-08-05 | 中国北车集团大同电力机车有限责任公司 | Assembly welding technique of translational frame of heating stove |
| CN102233473A (en) * | 2010-04-30 | 2011-11-09 | 华泰(南通)船务有限公司 | Assembling and welding process for plate unit of ship |
| CN102672359A (en) * | 2012-05-14 | 2012-09-19 | 福建荣盛钢结构实业有限公司 | Process for manufacturing rectangular box pipe |
-
2012
- 2012-12-28 CN CN201210582880.9A patent/CN103506763A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101497151A (en) * | 2008-01-31 | 2009-08-05 | 中国北车集团大同电力机车有限责任公司 | Assembly welding technique of translational frame of heating stove |
| CN102233473A (en) * | 2010-04-30 | 2011-11-09 | 华泰(南通)船务有限公司 | Assembling and welding process for plate unit of ship |
| CN102672359A (en) * | 2012-05-14 | 2012-09-19 | 福建荣盛钢结构实业有限公司 | Process for manufacturing rectangular box pipe |
Non-Patent Citations (1)
| Title |
|---|
| 孙红辉: "气缸体的焊接工艺与焊接变形控制研究", 《工程科技I期》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104097195A (en) * | 2014-07-03 | 2014-10-15 | 沪东重机有限公司 | Three-dimensional scribing method for large-scale diesel engine rack |
| CN104097195B (en) * | 2014-07-03 | 2016-08-31 | 沪东重机有限公司 | 3 D stereo scribble method for large-scale diesel engine frame |
| CN109396762A (en) * | 2018-11-09 | 2019-03-01 | 中船海洋动力部件有限公司 | The assembly method of marine diesel exhaust gas recirculation device shell |
| CN109909631A (en) * | 2019-03-20 | 2019-06-21 | 海洋石油工程（青岛）有限公司 | The building technology of super large wall thickness overlength multiple tube manifold |
| CN109909631B (en) * | 2019-03-20 | 2021-04-27 | 海洋石油工程（青岛）有限公司 | Construction process of super-thick-wall super-long composite pipe manifold |
| CN112706897A (en) * | 2020-11-29 | 2021-04-27 | 中船海洋动力部件有限公司 | Assembly process method of marine diesel engine base |
| CN112706897B (en) * | 2020-11-29 | 2022-11-18 | 中船海洋动力部件有限公司 | Assembly process method of engine base of marine diesel engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103273252B (en) | Shaping accessory and welding method before a kind of weldering of large-sized steel cylinder | |
| CN103506763A (en) | Manufacturing method of welding type cylinder block of marine diesel engine | |
| CN103586639B (en) | A kind of Welding Structure fuel manifold processing method with nozzle | |
| CN103753064B (en) | A kind of assembly technique of marine diesel frame beam part | |
| CN102489947B (en) | Bottom chord tube manufacturing process of girder of steel tube concrete truss beam bridge | |
| CN103878498B (en) | The preparation method of marine diesel welded type cylinder block | |
| CN206200431U (en) | A kind of car side wall frame welding tooling | |
| CN108127284B (en) | Assembly method before welding for marine diesel engine frame | |
| CN105414907A (en) | Building technology for pile leg of self-elevating wind power vessel | |
| CN102849179A (en) | 5,000PCTC (pure car and truck carrier) shafting irradiation process | |
| CN103203589A (en) | Manufacturing method of pre-baking aluminium cell shell | |
| CN106736076A (en) | A kind of steel construction box beam, the assembling apparatus of post | |
| CN201151111Y (en) | Adjustment and repair device for truck frame of railway carriage | |
| CN108894580A (en) | A kind of building technology of flare tower | |
| CN102806428B (en) | Integral manufacturing method for container spreader | |
| CN104816111B (en) | The adjustment frock of nuclear boiler main pump pump case welding use | |
| CN206588855U (en) | A kind of groove type heat collector supporting spring assembly tool | |
| CN205279909U (en) | Mobile core axle alignment frame alive | |
| CN104691762A (en) | Supporting device for aircraft engine nacelle | |
| CN204986110U (en) | Threaded connection's flange formula meter buret section | |
| CN204295184U (en) | For the angle tooling that steel tube tower arm is assembled | |
| CN202293362U (en) | Device for assisting butt joint of male dies of fan blades | |
| CN104266490A (en) | Furnace roller | |
| CN207808188U (en) | Wind electricity blade blade arrester positioning tool | |
| CN206717206U (en) | A kind of tooth form copper electrode positioner of bevel gear mould |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140115 |