CN109014796A - Large capacity suppresses drum thickness tile manufacturing method - Google Patents
Large capacity suppresses drum thickness tile manufacturing method Download PDFInfo
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- CN109014796A CN109014796A CN201811088085.8A CN201811088085A CN109014796A CN 109014796 A CN109014796 A CN 109014796A CN 201811088085 A CN201811088085 A CN 201811088085A CN 109014796 A CN109014796 A CN 109014796A
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- Prior art keywords
- longitudinal joint
- tile
- large capacity
- drum
- drum thickness
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
Abstract
Large capacity suppresses drum thickness tile manufacturing method, and the present invention relates to boiler plant technical fields more particularly to large capacity to suppress drum thickness tile manufacturing technology.Present invention aim to address due to drum thickness tile compacting longitudinal joint straight flange process allowance be not fully utilized, the excessive problem of longitudinal joint groove two sides compensation grade.Large capacity suppresses drum thickness tile manufacturing method, is to be made full use of the longitudinal joint straight flange process allowance that previous drum thickness tile machines away, and carries out preprocessing to thick tile longitudinal joint groove inner transition before hot-forming, reduces thick tile longitudinal joint straight flange process allowance；When hot-forming on thick tile outer ledge pad flat steel bar carry out segmentation press；Transition on the outside of hot-forming post-processing longitudinal joint groove.By innovation novel manufacturing method, it is improved large capacity compacting drum manufacturing technology level and design structure, economic benefit, this method is suitable for various specifications, and uniform thickness does not suppress drum thickness tile.
Description
Technical field
The present invention relates to boiler plant technical fields more particularly to large capacity to suppress drum thickness tile manufacturing technology.
Background technique
For a long time, China's large capacity compacting drum has produced hundreds, always using double 215 ° of the longitudinal joints of not uniform thickness/
145 °, R889/R874.5 structure, SA299 thickness 153/182mm or DIWA35 thickness 115/145mm.Due to thick tile longitudinal edge pressure
Outside deflection after system, the circular shape for being unable to reach design requirement need reserved 70~120mm longitudinal joint straight flange work in actual production
Skill surplus cuts off after pressing, the transition of 14 ° of symmetrical machining thickness tile longitudinal joint groove two sides simultaneously again, and it is thick that large capacity suppresses drum
Tile design structure and manufacturing technology it is outmoded and fall behind, deficiency in economic performance.Former manufacturing technology problems brought by 1. large capacity power station
The reserved longitudinal joint straight flange process allowance of boiler compacting drum thickness tile is excessive, and cut off causes process allowance that cannot fill after pressing
Divide and utilizes；2. the transition of 14 ° of longitudinal joint groove two sides is too big, causing drum to rotate on turning rolls, difficult, bounce is excessive, needs to weld
Several pieces of transition platess or the circumferential welding transition near longitudinal joint are connect, manufacturing cost is caused to increase.
Summary of the invention
It cannot be sufficiently sharp the invention aims to solve longitudinal joint straight flange process allowance after suppressing due to drum thickness tile
With, lead to that consumable material is more, deficiency in economic performance, longitudinal joint groove two sides compensation grade excessive the problem of causing manufacturing cost to increase,
And then provide large capacity compacting drum thickness tile manufacturing method.
The technical scheme is that the process allowance that previous drum thickness tile machines away is made full use of, drum
The both ends of thick tile include two longitudinal joint grooves, mistake on the outside of the symmetrical longitudinal joint groove inner transition in groove two sides and longitudinal joint groove
Cross, specific step is as follows for manufacturing method: one, by drum thickness tile steel plate blank oxygen-acetylene cutting, it is vertical to dig Milling Machining in advance for correction
Groove inner transition is stitched, according to the actual situation, processing transition angle is 3 °~8 °, and processing length is 100mm~160mm, is reserved
Longitudinal joint straight flange process allowance is to 30mm~38mm；Two, drum thickness tile steel plate blank is heated, thickness is cut on edge pad on the outside
Face is 6 × 60mm2~12 × 80mm2Flat steel bar carry out segmentation and press, according to the actual situation, the superposition quantity of flat steel bar is 1~
3 layers；Three, the longitudinal joint straight flange process allowance gas cutting of drum thickness tile is cut off, its longitudinal joint groove of smart school drum thickness tile post-processing
And transition angle on the outside of longitudinal joint groove, according to the actual situation, processing transition angle is 3 °~8 °.
The beneficial effects of the present invention are: reducing thick tile longitudinal joint straight flange process allowance, material has been saved；On the outside of longitudinal joint groove
Transition angle reduces, after hot-forming, when thick tile and thin tile make-up welding equipment are at cylinder, and compensation grade on the outside of longitudinal joint groove
It is smaller, the transition portion after make-up flatten it is slow so that cylinder rotated on turning rolls be easy, circular runout it is gentle, avoid volume
External welding transition plates or the circumferential welding transition near longitudinal joint, reduce manufacturing cost；By innovation novel manufacturing method,
Be improved large capacity compacting drum manufacturing technology level and design structure, economic benefit, technology is novel, it is practical, advanced, can
Row, this method is suitable for various specifications, and uniform thickness does not suppress drum thickness tile.
Detailed description of the invention
Fig. 1 is that large capacity suppresses processing structural schematic diagram on the inside of the seam groove of drum thickness tile steel plate blank, and 2 indicate in figure
Longitudinal joint groove inner transition；
Fig. 2 is that large capacity suppresses drum thickness tile manufacturing method schematic diagram, and 5 indicate drum thickness tile edges parts in figure, 6
Indicate flat steel bar, 7 indicate the upper mold of compacting tool set, and 8 indicate the lower die of lower section compacting tool set；
Fig. 3 is that large capacity suppresses drum thickness tile structure schematic diagram, and 1 indicates longitudinal joint groove in figure, and 2 indicate in longitudinal joint groove
Side transition, 3 indicate transition on the outside of longitudinal joint groove, and 4 indicate longitudinal joint straight flange process allowance.
Specific embodiment:
Specific embodiment 1: large capacity described in present embodiment suppresses drum thickness tile manufacturing method, the manufacturer
Method is to process thick tile longitudinal joint two sides transition using the process allowance of deflection, the specific steps are as follows: one, by drum thickness tile steel plate
Milling Machining longitudinal joint groove inner transition inclined-plane, according to the actual situation, the transition after processing are dug in blank oxygen-acetylene cutting, correction in advance
The tilt angle on inclined-plane is 3 °~8 °, and processing length is 100mm~160mm, reserves longitudinal joint straight flange process allowance to 30
Mm~38mm；Two, drum thickness tile steel plate blank is heated, thickness x cross sectional is 6 × 60mm on edge pad on the outside2
~12 × 80mm2Flat steel bar carry out segmentation and press, according to the actual situation, the superposition quantity of flat steel bar is 1~3 layer；Three, by pot
The longitudinal joint straight flange process allowance gas cutting of the thick tile of cylinder is cut off, outside its longitudinal joint groove of smart school drum thickness tile post-processing and longitudinal joint groove
Side transition angle, according to the actual situation, processing transition angle are 3 °~8 °.
In present embodiment, before hot-forming, plane Milling Machining in advance is carried out to thick tile longitudinal joint groove inner transition, so that
Thick tile edges are thinning, and thickness tile is easier to deform when hot-forming, reach ideal bending effect, further reduce
Longitudinal joint straight flange process allowance, reduces the consumption of material, save the cost, in addition, after hot-forming, to longitudinal joint groove inner transition
It no longer needs to process, when the longitudinal joint straight flange process allowance refers to hot-forming, thick tile internal circular surfaces metal is to surrounding
Expansion is opened due to the straight flange that tile longitudinal joint edge can not be formed by bending so that being formed in one segment limit of tile longitudinal joint edge outward
The straight section opened；When hot-forming, 1~3 layer of the flat steel bar on thick tile outer ledge pad divides thick tile outer ledge
Section presses, and segmentation is suppressed according to the actual situation, and this segmentation compacting enables thick tile homogeneous deformation to be bent；It is hot pressed into
After type, when thick tile and thin tile make-up welding equipment are at cylinder, compensation grade is smaller on the outside of longitudinal joint groove, the transition part after make-up
It point flattens slow, so that cylinder rotate on turning rolls, easy, circular runout is gentle, avoids extra soldered transition plates or in longitudinal joint
Circumferential direction welding transition nearby, reduces manufacturing cost.
Specific embodiment 2: the compacting drum thickness tile manufacture of large capacity described in present embodiment and specific embodiment one
The difference of method is that digging Milling Machining longitudinal joint groove inner transition angle described in step 1 in advance is 4 °~7 °, processing length
For 110mm~150mm, longitudinal joint straight flange process allowance is reserved to 32mm~37mm；Other are same as the specific embodiment one.
Specific embodiment 3: present embodiment and the large capacity of specific embodiment one or two suppress drum thickness tile
The difference of manufacturing method is that the preparatory plane Milling Machining longitudinal joint groove inner transition angle is 5 °~6 °, and processing length is
120mm~140mm reserves longitudinal joint straight flange process allowance to 34mm~36mm；Other are the same as one or two specific embodiments.
Specific embodiment 4: present embodiment and specific embodiment one, two or the three large capacity compacting drums are thick
The difference of tile manufacturing method is that the preparatory plane Milling Machining longitudinal joint groove inner transition angle is 6 °, and processing length is
130mm reserves longitudinal joint straight flange process allowance to 35mm, other are identical as specific embodiment one, two or three；
In the present embodiment, by taking SA299 steel plate as an example, longitudinal joint straight flange process allowance is reserved when thick tile and is reduced by 70mm
When to 35mm, every drum can be made to reduce SA299 steel plate materials and consume 2.6 tons, reduce thick tile material consumption 2.6%；Work as thickness
When tile longitudinal joint straight flange process allowance is newly reduced by 120mm to 35mm, every drum can be made to reduce the consumption of SA299 steel plate materials
6.3 tons, reduce thick tile material consumption 6.3%, remarkable in economical benefits.
Specific embodiment 5: present embodiment and specific embodiment one, two, three or four large capacities suppress drum
The difference of thick tile manufacturing method is, drum thickness tile steel plate blank is heated described in step 2, on the outside on edge pad
Thickness x cross sectional is 7 × 70mm2Flat steel bar carry out segmentation and press, the superposition quantity of flat steel bar is 2 layers；Other and specific embodiment party
Formula one, two, three or four are identical.
Specific embodiment 6: present embodiment and specific embodiment one, two, three, four or five large capacities are suppressed
The difference of drum thickness tile manufacturing method is that transition angle is 4 °~7 ° on the outside of processing longitudinal joint groove described in step 3；Its
He one with specific embodiment, two, three, four or five identical.
Specific embodiment 7: present embodiment and specific embodiment one, two, three, four, five or the six large capacity pressures
The difference of drum thickness tile manufacturing method processed is that transition angle is 5 °~6 ° on the outside of the processing longitudinal joint groove；Other and tool
Body embodiment one, two, three, four, five or six are identical.
Specific embodiment 8: present embodiment and specific embodiment one, two, three, four, five, six or seven great Rong
The difference of amount compacting drum thickness tile manufacturing method is that transition angle is 6 ° on the outside of the processing longitudinal joint groove；Other and tool
Body embodiment one, two, three, four, five, six or seven are identical.
Specific embodiment 9: the large capacity according to specific embodiment one suppresses drum thickness tile manufacturing method, obtain
It obtains large capacity and suppresses drum thickness tile structure；
In present embodiment, the material for manufacturing thick tile can be SA299 steel plate, DIWA353 steel plate and other preparations
The not material of uniform thickness compacting pot drum, the angle of symmetrical machining thickness tile longitudinal joint two sides transition, reserved longitudinal joint straight flange process allowance
It is selected and is set according to material with the thickness x cross sectional of thick the padded flat steel bar of tile outer ledge, this method is held suitable for boiler pressure
The design and manufacturing technology field of the compacting stack shell of the bearing devices such as device, nuclear power.
Claims (9)
1. large capacity suppresses drum thickness tile manufacturing method, which is characterized in that specific step is as follows for the manufacturing method:
One, by drum thickness tile steel plate blank oxygen-acetylene cutting, correction digs Milling Machining longitudinal joint groove inner transition, according to reality in advance
Border situation, processing transition angle are 3 °~8 °, and processing length is 100mm~160mm, reserve longitudinal joint straight flange process allowance to 30mm
~38mm；
Two, drum thickness tile steel plate blank is heated, thickness x cross sectional is 6 × 60mm on edge pad on the outside2~12 × 80mm2's
Flat steel bar carries out segmentation and presses, and according to the actual situation, the superposition quantity of flat steel bar is 1~3 layer；
Three, the longitudinal joint straight flange process allowance gas cutting of drum thickness tile is cut off, its longitudinal joint groove of smart school drum thickness tile post-processing
And transition angle on the outside of longitudinal joint groove, according to the actual situation, processing transition angle is 3 °~8 °.
2. large capacity suppresses drum thickness tile manufacturing method according to claim 1, which is characterized in that pre- described in step 1
First plane Milling Machining longitudinal joint groove inner transition angle is 4 °~7 °, and processing length is 110mm~150mm, reserves longitudinal joint straight flange work
Skill surplus is to 32mm~37mm.
3. large capacity suppresses drum thickness tile manufacturing method according to claim 2, which is characterized in that the preparatory plane milling adds
Work longitudinal joint groove inner transition angle is 5 °~6 °, and processing length is 120mm~140mm, reserves longitudinal joint straight flange process allowance extremely
34mm~36mm.
4. large capacity suppresses drum thickness tile manufacturing method according to claim 3, which is characterized in that the preparatory plane milling adds
Work longitudinal joint groove inner transition angle is 6 °, processing length 130mm, reserves longitudinal joint straight flange process allowance to 35mm.
5. large capacity suppresses drum thickness tile manufacturing method according to claim 1, which is characterized in that add described in step 2
Hot pot cylinder thickness tile steel plate blank, thickness x cross sectional is 7 × 70mm on edge pad on the outside2Flat steel bar carry out segmentation press,
The superposition quantity of flat steel bar is 2 layers.
6. large capacity suppresses drum thickness tile manufacturing method according to claim 1, which is characterized in that add described in step 3
Transition angle is 4 °~7 ° on the outside of work longitudinal joint groove.
7. large capacity suppresses drum thickness tile manufacturing method according to claim 1, which is characterized in that add described in step 3
Transition angle is 5 °~6 ° on the outside of work longitudinal joint groove.
8. large capacity suppresses drum thickness tile manufacturing method according to claim 7, which is characterized in that the processing longitudinal joint slope
Transition angle is 6 ° on the outside of mouthful.
9. large capacity suppresses drum thickness tile manufacturing method according to claim 1, obtains large capacity and suppress drum thickness tile
Structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811088085.8A CN109014796B (en) | 2018-09-18 | 2018-09-18 | Method for manufacturing large-capacity pressed thick boiler barrel tile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811088085.8A CN109014796B (en) | 2018-09-18 | 2018-09-18 | Method for manufacturing large-capacity pressed thick boiler barrel tile |
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| CN109014796A true CN109014796A (en) | 2018-12-18 |
| CN109014796B CN109014796B (en) | 2020-07-10 |
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| CN201811088085.8A Active CN109014796B (en) | 2018-09-18 | 2018-09-18 | Method for manufacturing large-capacity pressed thick boiler barrel tile |
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|---|---|---|---|---|
| JPH11129031A (en) * | 1997-10-29 | 1999-05-18 | Mitsubishi Heavy Ind Ltd | Press forming die |
| US6385841B1 (en) * | 2000-09-29 | 2002-05-14 | Advanced Cutting Technologies, Ltd. | Method and apparatus for installing steam boiler tubes |
| CN2575405Y (en) * | 2002-05-31 | 2003-09-24 | 天津市华意保温制品有限公司 | Device for covering leaks & doweling in pipe |
| CN101941139A (en) * | 2010-09-02 | 2011-01-12 | 中信重工机械股份有限公司 | Welding and assembling method for huge mining mill barrel |
| CN103286528A (en) * | 2013-05-29 | 2013-09-11 | 东方电气集团东方锅炉股份有限公司 | Processing technology for longitudinal-seam narrow-gap welding groove of thick-walled barrels |
| CN104625590A (en) * | 2013-11-12 | 2015-05-20 | 青岛旭升封头有限公司 | Boiler drum end manufacturing technology |
| CN104669594A (en) * | 2015-03-09 | 2015-06-03 | 吉林大学 | Composite curve surface hot-press forming method based on multi-point reconfigurable die |
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|---|---|---|---|---|
| JPH11129031A (en) * | 1997-10-29 | 1999-05-18 | Mitsubishi Heavy Ind Ltd | Press forming die |
| US6385841B1 (en) * | 2000-09-29 | 2002-05-14 | Advanced Cutting Technologies, Ltd. | Method and apparatus for installing steam boiler tubes |
| CN2575405Y (en) * | 2002-05-31 | 2003-09-24 | 天津市华意保温制品有限公司 | Device for covering leaks & doweling in pipe |
| CN101941139A (en) * | 2010-09-02 | 2011-01-12 | 中信重工机械股份有限公司 | Welding and assembling method for huge mining mill barrel |
| CN103286528A (en) * | 2013-05-29 | 2013-09-11 | 东方电气集团东方锅炉股份有限公司 | Processing technology for longitudinal-seam narrow-gap welding groove of thick-walled barrels |
| CN104625590A (en) * | 2013-11-12 | 2015-05-20 | 青岛旭升封头有限公司 | Boiler drum end manufacturing technology |
| CN105710603A (en) * | 2014-12-04 | 2016-06-29 | 重庆聆益机械有限公司 | Processing technology for cylindrical shell sections of pipeline |
| CN104669594A (en) * | 2015-03-09 | 2015-06-03 | 吉林大学 | Composite curve surface hot-press forming method based on multi-point reconfigurable die |
| CN106181263A (en) * | 2016-08-23 | 2016-12-07 | 天津惠蓬海洋工程有限公司 | A kind of minor diameter big wall thickness pipe drawing method |
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