CN109128726A - A kind of processing method of potassium steel end socket - Google Patents
A kind of processing method of potassium steel end socket Download PDFInfo
- Publication number
- CN109128726A CN109128726A CN201811337632.1A CN201811337632A CN109128726A CN 109128726 A CN109128726 A CN 109128726A CN 201811337632 A CN201811337632 A CN 201811337632A CN 109128726 A CN109128726 A CN 109128726A
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- China
- Prior art keywords
- end socket
- potassium steel
- processing method
- welding
- disk
- 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.)
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Links
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 34
- 229910052700 potassium Inorganic materials 0.000 title claims abstract description 34
- 239000011591 potassium Substances 0.000 title claims abstract description 34
- 239000010959 steel Substances 0.000 title claims abstract description 34
- 238000003672 processing method Methods 0.000 title claims abstract description 25
- 238000003466 welding Methods 0.000 claims abstract description 45
- 238000009987 spinning Methods 0.000 claims abstract description 25
- 238000005520 cutting process Methods 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 13
- 230000001360 synchronised effect Effects 0.000 claims abstract description 12
- 238000007689 inspection Methods 0.000 claims abstract description 9
- 238000000465 moulding Methods 0.000 claims abstract description 7
- 238000004080 punching Methods 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 4
- 239000002893 slag Substances 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 238000005336 cracking Methods 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910000617 Mangalloy Inorganic materials 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003471 mutagenic agent Substances 0.000 description 1
- 231100000707 mutagenic chemical Toxicity 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
It the invention discloses a kind of processing method of potassium steel end socket, including selection, cutting, welding, preheating cold stamping, hot spinning, nondestructive inspection and groove and grinds, makes end socket final molding.The processing method of potassium steel end socket of the invention, disk in the welding process, first pass through spot welding and fix, and then to dividing the gap between valve to weld using parallel synchronous, avoiding disk because of unilateral side welding leads to the case where deforming.Meanwhile by preheating cold stamping and hot spinning, the residual stress in welding and spinning process is reduced, ensure that the Seal Head Strength in forming process, reduces cracking, the scrappage of product is reduced, saves production cost, increase economic benefit.In addition, seal head material is potassium steel, with stronger resistance to low temperature, job stability is strong, and light weight, convenient transportation.Compared with traditional disposable punch forming or drum pressure form, high production efficiency is high-quality, can substantially reduce the production cycle.
Description
Technical field
The present invention relates to end socket processing technique fields, particularly, are related to a kind of processing method of potassium steel end socket.
Background technique
Currently, the end socket of the container tank for storing cryogenic liquid generallys use stainless steel material, but at low temperature,
Interior austenite structure is easy to happen change, causes its intensity to decline, and stainless steel material density is big, increases container tank
Weight, thus not convenient for transportation.In addition, the processing method of above-mentioned end socket is often disposable direct punching press, and it is used for Low Temperature Liquid
The size of the end socket of the container tank of body is larger, and diameter can reach 2350mm, it is thus typically necessary to multiple tablets are welded,
Easily there is a phenomenon where end sockets to crack due to welding stress unevenness in punching course, and end socket scrappage is high, to increase life
Cost is produced, economic benefit is reduced.
Summary of the invention
The technical problems to be solved by the present invention are: now providing one to overcome the above-mentioned problems in the prior art
Kind of intensity is big, scrappage is low, can save production cost potassium steel end socket processing method.
The technical solution adopted by the present invention to solve the technical problems is: a kind of processing method of potassium steel end socket, including
Following steps,
S20: cutting is cut according to potassium steel plate of the size of design to selection, to form multiple points of valves, so that
Multiple points of valves can constitute a full circle；
S30: welding, first by it is each it is described divide valve on horizontal plane split formed a full circle, by way of spot welding will
Divide valve tentatively to weld together described in adjacent two, disk is formed, then by the disk vertically perpendicular to horizontal plane, in institute
The two sides for stating disk are welded by the gap parallel synchronous divided between valve；
S40: preheating cold stamping, the disk are heated to 100~150 DEG C, are placed on the disk after restoring to room temperature
The big R at end socket center is stamped out on press machine, preliminarily forms end socket；
S50: preliminary molding end socket is mounted on spinning machine by hot spinning, 70 is heated to the surrounding of the end socket~
Spinning is carried out while 120 DEG C, and forms the small r of end socket.
Further, in step S20, valve is divided to carry out edge grinding process described in each after cutting, until described
Divide the edge of valve round and smooth.
Further, in step S30, the disk can be vertically arranged by bracket supporting role, or pass through artificial hand
It helps and is vertically arranged.
Further, in step S30, after the disk is welded by parallel synchronous, ray detection is carried out to weld seam, with inspection
Whether the weld seam surveyed on the disk has slag inclusion and stomata.
Further, in step S30, the parallel synchronous welding manner of the disk is Plasma Welding or submerged-arc welding or hand
Work weldering.
Further, in step S50, the surrounding of end socket is heated using rifle is dried.
It is further, further comprising the steps of before step S20,
Step S10: selection selects potassium steel plate in homogeneous thickness, and maximum gauge deviation is less than 1.5mm, surface point
Depth is less than 0.3mm, and surface hardness range is 240HB~280HB.
It is further, further comprising the steps of after step S50,
S60: nondestructive inspection detects the welded seam area on big R and small r, the weldering in removal punching press, spinning rear head
Seam defect and crizzle；
S70: groove is simultaneously ground, and carries out groove processing to the open end of end socket, and to being ground at groove.
Further, in step S60, the mode of nondestructive inspection is ray detection or Liquid penetrant testing.
Further, in step S70, adapted numerical control cutting machine carries out plasma groove.
The beneficial effects of the present invention are: the processing method of potassium steel end socket provided by the invention, disk in the welding process,
It first passes through spot welding to fix, then to dividing the gap between valve to weld using parallel synchronous, avoids disk and led because of unilateral side welding
The case where mutagens shape, occurs.Meanwhile it being answered by preheating cold stamping and hot spinning, the remnants reduced in welding and spinning process
Power ensure that the Seal Head Strength in forming process, reduce cracking, reduce the scrappage of product, save production cost, increase
Economic benefit is added.In addition, seal head material is potassium steel, with stronger resistance to low temperature, job stability is strong, and quality
Gently, convenient transportation.Compared with traditional disposable punch forming or drum pressure form, high production efficiency is high-quality, can substantially reduce
Production cycle.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the flow chart of the processing method of potassium steel end socket of the invention；
Fig. 2 is takeshapes of closure structural schematic diagram in the processing method of potassium steel end socket shown in Fig. 1；
Fig. 3 is the schematic diagram that welds in the processing method of potassium steel end socket shown in Fig. 1；
Fig. 4 is the perspective view using the molding end socket of processing method of potassium steel end socket of the invention.
In figure: 1, dividing valve, 2, weld seam, 3, the brim of a hat, 4, welding equipment, 10, disk.
Specific embodiment
Presently in connection with attached drawing, the present invention is described in detail.This figure is simplified schematic diagram, is only illustrated in a schematic way
Basic structure of the invention, therefore it only shows the composition relevant to the invention.
The present invention provides a kind of processing methods of potassium steel end socket comprising following steps:
Step S10: selection.Potassium steel plate is selected, the ingredient of the potassium steel plate is 0.45C-25Mn-4Cr-0.5Cu,
The thickness of plate is uniform, and maximum gauge deviation is less than 1.5mm, and surface point depth is less than 0.3mm, and surface hardness range is
240HB~280HB.To the plate of selection through physics and chemistry review it is qualified after place an order production.High manganese steel material is in temperature environment, Ovshinsky
Body tissue framework is also not susceptible to change, and job stability is strong, and lighter weight, convenient transportation.
Step S20: cutting.It is cut according to plate of the size of design to selection, to form multiple points of valves 1, so that
Multiple points of valves 1 can constitute a full circle.Cutting process uses plasma cut, heat affected area area caused by plasma cut
It is small, be conducive to eliminate cutting stress.Meanwhile dividing valve 1 to carry out edge grinding process each after cutting, until dividing valve 1
Edge is round and smooth, reduces square edge stress concentration, prevents from cracking, while providing advantageous welding item for subsequent welding sequence
Part.
Step S30: welding.First valve 1 is divided to form a full circle in split on horizontal plane by each, it will by way of spot welding
Adjacent two points of valves 1 tentatively weld together, in this way, 1 postwelding of multiple points of valves forms a disk 10.Then, by disk
10 place perpendicular to horizontal plane vertically, will divide the seam between valve 1 by welding equipment 4 (for example, welding gun) in the two sides of disk 10
The welding of gap parallel synchronous as a result, the solder flux stress of 10 two sides of disk is identical, and then guarantees to reduce while welding performance
Welding deformation enhances the intensity and flatness of disk 10.After disk 10 is welded by parallel synchronous, ray is carried out to weld seam 2
Detection avoids slag inclusion and stomata for subsequent seal head molding to detect whether the weld seam 2 on disk 10 has slag inclusion and stomata
It influences, end socket cracking can be effectively reduced.In present embodiment, disk 10 is welded by two points of valves 1.
It is to be appreciated that disk 10 can be vertically arranged by bracket supporting role, or it is vertically arranged by manually hand steered.
In addition, obtaining disk 10 by way of dividing valve 1 to weld, the big ruler of monolith is needed when overcoming processing large scale end socket
The limitation of very little plate reduces the waste of plate rim charge, increases the effective rate of utilization to plate, thereby reduces and be produced into
This.
In present embodiment, the parallel synchronous welding manner of disk 10 is Plasma Welding, this kind of welding manner can be substantially
The plasticity and toughness for improving weld seam 2 prevent that cracking situation occurs during seal head molding.It is to be appreciated that being not shown at other
Embodiment in, welding manner can also be submerged-arc welding or manual welding, herein with no restriction.
Step S40: preheating cold stamping.Disk 10 is heated, heating temperature is 100~150 DEG C, heat preservation a period of time
Afterwards, restore to room temperature, then disk 10 is placed on press machine, the big portion R at end socket center is stamped out using stamping die
Point, so that disk 10 preliminarily forms the end socket that surrounding has the brim of a hat 3.Before punching press, by being heated to disk 10, it can eliminate
The welding stress retained in welding sequence prevents from cracking in subsequent punching course because the residual stress in disk 10 is excessive
Phenomenon.And when the recovery of disk 10 to room temperature, punching operation is just carried out, can avoid generating oxide skin, surface quality is good, ensure that
The processing quality of end socket.It is formed compared to traditional disposable direct punch forming or drum pressure machine drum pressure, stamping quality is more preferable, drop
The low scrappage of product, increases economic benefit, and processing efficiency is higher, substantially reduces the production cycle.
Step S50: hot spinning.Preliminary molding end socket is mounted on spinning machine, and by heating device to the brim of a hat 3 into
Row heating, heating temperature are 70~120 DEG C, carry out spinning to the brim of a hat 3 in heating process, the brim of a hat 3 is made to form the small part r.Spinning
The brim of a hat 3 is heated in the process, the residual stress generated in spinning process because the brim of a hat 3 deforms can be eliminated in time, reduces rotation
The risk that weld seam 2 cracks during pressure, realizes the real-time elimination purpose to residual stress in the brim of a hat 3.It is tested according to many experiments
Card, potassium steel end socket, most useful for spinning, can effectively ensure that spinning quality in 70~120 DEG C of heating interval.If the brim of a hat 3 adds
The case where hot temperature is excessively high, then will appear bulge, pulls, and cooling meat deformation is uncontrollable after spinning.
In present embodiment, the brim of a hat 3 for being intended to spinning is robbed using baking and is heated.
Step S60: nondestructive inspection.Welded seam area on big R and small r is detected, in removal punching press, spinning rear head
Weld defect and crizzle.It is to be appreciated that the mode of nondestructive inspection includes but is not limited to ray detection and infiltration inspection
It surveys.
Step S70: groove is simultaneously ground.Subsequent end socket is connect with the tank body of straight tube structure for convenience, to the opening of end socket
End carries out groove processing, and to being ground at groove, to guarantee the flatness of groove.Any surface finish, heat in order to obtain
Small groove is deformed, adapted numerical control cutting machine carries out plasma groove in the retaining wall on slope mode.Meanwhile in order to reach smooth grinding
Purpose, lapping mode is hand lapping and grinds using dry that micron power granularity used is narrower than W7.
The processing method of potassium steel end socket provided by the invention, disk 10 are welded by multiple points of valves 1, can meet big ruler
The process requirements of very little end socket in welding process, first pass through spot welding and fix, and then use parallel synchronous to the gap divided between valve 1
Welding, avoiding disk 10 because of unilateral side welding leads to the case where deforming.Meanwhile by preheating cold stamping and hot spinning,
The residual stress in welding and spinning process is reduced, ensure that the Seal Head Strength in forming process, reduces cracking, reduces
The scrappage of product, saves production cost, increases economic benefit.In addition, seal head material is potassium steel, with stronger
Resistance to low temperature, job stability is strong, and light weight, convenient transportation.Phase is formed with traditional disposable punch forming or drum pressure
Than high production efficiency is high-quality, can substantially reduce the production cycle.
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff
Various changes and amendments can be carried out without departing from the scope of the present invention completely.The technical scope of this invention is not
The content being confined on specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (10)
1. a kind of processing method of potassium steel end socket, includes the following steps,
S20: cutting is cut according to potassium steel plate of the size of design to selection, to form multiple points of valves, so that multiple
Divide valve that can constitute a full circle；
S30: welding, first by it is each it is described divide valve on horizontal plane split formed a full circle, will be adjacent by way of spot welding
Two described in divide valve tentatively to weld together, formed disk, then by the disk vertically perpendicular to horizontal plane, in the circle
The two sides of piece are welded by the gap parallel synchronous divided between valve；
S40: preheating cold stamping, the disk are heated to 100~150 DEG C, and the disk is placed on punching press after restoring to room temperature
The big R at end socket center is stamped out on machine, preliminarily forms end socket；
S50: preliminary molding end socket is mounted on spinning machine, is heated to 70~120 DEG C to the surrounding of the end socket by hot spinning
While carry out spinning, and form the small r of end socket.
2. the processing method of potassium steel end socket as described in claim 1, it is characterised in that: in step S20, to every after cutting
Valve is divided to carry out edge grinding process described in one, until described divide the edge of valve round and smooth.
3. the processing method of potassium steel end socket as described in claim 1, it is characterised in that: in step S30, the disk can lead to
It crosses bracket supporting role to be vertically arranged, or is vertically arranged by manually hand steered.
4. the processing method of potassium steel end socket as described in claim 1, it is characterised in that: in step S30, the disk passes through
After parallel synchronous welding, ray detection is carried out to weld seam, whether there is slag inclusion and stomata with the weld seam detected on the disk.
5. the processing method of potassium steel end socket as described in claim 1, it is characterised in that: in step S30, the disk and
Row synchronous welding mode is Plasma Welding or submerged-arc welding or manual welding.
6. the processing method of potassium steel end socket as described in claim 1, it is characterised in that: in step S50, using baking rifle to envelope
The surrounding of head is heated.
7. the processing method of potassium steel end socket as described in claim 1, it is characterised in that: before step S20 further include with
Lower step,
Step S10: selection selects potassium steel plate in homogeneous thickness, and maximum gauge deviation is less than 1.5mm, surface point depth
Less than 0.3mm, surface hardness range is 240HB~280HB.
8. such as the processing method of the described in any item potassium steel end sockets of claim 1-7, it is characterised in that: after step S50
It is further comprising the steps of,
S60: nondestructive inspection detects the welded seam area on big R and small r, and the weld seam in removal punching press, spinning rear head lacks
Sunken and crizzle；
S70: groove is simultaneously ground, and carries out groove processing to the open end of end socket, and to being ground at groove.
9. the processing method of potassium steel end socket as claimed in claim 8, it is characterised in that: in step S60, the side of nondestructive inspection
Formula is ray detection or Liquid penetrant testing.
10. the processing method of potassium steel end socket as claimed in claim 8, it is characterised in that: in step S70, adapted numerical control cutting
Cutting mill carries out plasma groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811337632.1A CN109128726A (en) | 2018-11-12 | 2018-11-12 | A kind of processing method of potassium steel end socket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811337632.1A CN109128726A (en) | 2018-11-12 | 2018-11-12 | A kind of processing method of potassium steel end socket |
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| Publication Number | Publication Date |
|---|---|
| CN109128726A true CN109128726A (en) | 2019-01-04 |
Family
ID=64808134
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811337632.1A Pending CN109128726A (en) | 2018-11-12 | 2018-11-12 | A kind of processing method of potassium steel end socket |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110091134A (en) * | 2019-06-04 | 2019-08-06 | 宜兴华威封头有限公司 | A kind of stainless steel end socket rushes spin forming process |
| CN113941833A (en) * | 2021-11-12 | 2022-01-18 | 荆门宏图特种飞行器制造有限公司 | Manufacturing process of high manganese steel material shell ring |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103350156A (en) * | 2013-06-28 | 2013-10-16 | 宜兴华威封头有限公司 | Warm-pressing forming process of stainless steel sealing head |
| CN103624410A (en) * | 2013-10-22 | 2014-03-12 | 中建钢构有限公司北京分公司 | Method for welding large special-shaped multicavity steel structure |
| CN107598340A (en) * | 2017-10-26 | 2018-01-19 | 上海振华重工(集团)股份有限公司 | Big thick plate T-joint welding method |
-
2018
- 2018-11-12 CN CN201811337632.1A patent/CN109128726A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103350156A (en) * | 2013-06-28 | 2013-10-16 | 宜兴华威封头有限公司 | Warm-pressing forming process of stainless steel sealing head |
| CN103624410A (en) * | 2013-10-22 | 2014-03-12 | 中建钢构有限公司北京分公司 | Method for welding large special-shaped multicavity steel structure |
| CN107598340A (en) * | 2017-10-26 | 2018-01-19 | 上海振华重工(集团)股份有限公司 | Big thick plate T-joint welding method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110091134A (en) * | 2019-06-04 | 2019-08-06 | 宜兴华威封头有限公司 | A kind of stainless steel end socket rushes spin forming process |
| CN113941833A (en) * | 2021-11-12 | 2022-01-18 | 荆门宏图特种飞行器制造有限公司 | Manufacturing process of high manganese steel material shell ring |
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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 |
Application publication date: 20190104 |
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