CN109732275A - A kind of tubular sheet metal component processing method of band radial direction arc section - Google Patents
A kind of tubular sheet metal component processing method of band radial direction arc section Download PDFInfo
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- CN109732275A CN109732275A CN201811519978.3A CN201811519978A CN109732275A CN 109732275 A CN109732275 A CN 109732275A CN 201811519978 A CN201811519978 A CN 201811519978A CN 109732275 A CN109732275 A CN 109732275A
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Abstract
The present invention relates to a kind of tubular sheet metal component processing method of band radial direction arc section, solve the problems, such as that existing tubular sheet metal component processing cost is higher.Method includes the following steps: Step 1: blanking；According to design size, the practical developed dimension of blank steel plate of semicircular cylinder is calculated；Step 2: hydraulic machined grooves；Blank steel plate is extruded into two arc grooves by hydraulic press；Step 3: support tube fills out sand；Prepare four steel pipes, in steel casing pack sand, and blocks steel pipe both ends nozzle；Step 4: spot welding support tube；At the rounding off of arc groove, four support tubes are placed, and spot welding positions；Step 5: spot welding support plate；In the bottom end of support tube, support plate, and spot welding are set；Step 6: rolling semicircular cylinder；The blank steel plate of postwelding, support plate, support tube are rolled into semi-cylindrical shaped by roller machine；Step 7: welding；Two semi-cylindrical shapeds are welded into unitary circular cylinder.
Description
Technical field
The present invention relates to a kind of tubular sheet metal component processing methods, and in particular to a kind of tubular sheet metal component of band radial direction arc section
Processing method.
Background technique
Cryogenic vacuum ball valve is usually used in cryogenic fluid conduit, and working media is liquid oxygen (- 183 DEG C or less), because conveying is situated between
A cartridge type outer cover (the tubular sheet metal component i.e. with radial arc section), cartridge type outer cover need to be arranged in the low temperature requirements of matter on the outside of valve
It is sleeved on valve body, and both ends and valve body are welded to connect, centre forms interlayer and vacuumizes, and the cooling capacity of medium is prevented to pass through valve body
Incoming atmosphere carries out heat exchange with room temperature atmosphere.Under valve working state, valve body is directly contacted with cryogenic media, is based on
Thermal expansion and contraction principle, valve body is shunk in lengthwise dimension, and cartridge type outer cover is in normal temperature state, and lengthwise dimension is constant,
It requires the design of cartridge type cover structure to carry out natural compensation to deformation of expanding with heat and contract with cold at this time, is respectively arranged at cartridge type outer cover both ends at this time
One arc section, for meeting natural compensation requirement.
Usual such cartridge type outer cover part is produced using modes such as drawing or punching presses, makes die for special purpose according to part size
Tool, but Vacuum ball valve operation quantity is few, cartridge type outer cover processing quantity only has a two pieces, is not suitable for investment substantial contribution and does drawing
Or stamping die is opened costly, higher cost if doing particular manufacturing craft.
Summary of the invention
Present invention aim to address existing tubular sheet metal component production methods to need using particular manufacturing craft, and cost of manufacture is higher
The problem of, a kind of tubular sheet metal component processing method of band radial direction arc section is provided.
The technical scheme is that
A kind of tubular sheet metal component processing method of band radial direction arc section, comprising the following steps:
Step 1: blanking；
According to the size of the tubular sheet metal component with radial arc section, the practical expansion ruler of blank steel plate of semicircular cylinder is calculated
Very little, blank steel plate is two pieces rectangle plain plate, and there are machining allowance；
Step 2: hydraulic machined grooves；
Blank steel plate is extruded into two arc grooves by hydraulic press；
Step 3: support tube fills out sand；
Preparing four steel pipes, length of steel pipe is identical as the arc groove length of blank steel plate, in steel casing pack sand, and
Block steel pipe both ends nozzle；
Step 4: spot welding support tube；
At the rounding off of arc groove, four support tubes are placed, and position to support tube and blank steel plate spot welding；
Step 5: spot welding support plate；
Support plate is set in the bottom end of support tube, and by support plate and support tube spot welding；
Step 6: rolling semicircular cylinder；
The blank steel plate of postwelding, support plate, support tube are rolled into semi-cylindrical shaped by roller machine, and cut off more than processing
Then amount removes support plate, support tube；
Step 7: welding；
Two semi-cylindrical shapeds are welded into unitary circular cylinder.
It further, further include Step 8: school shape closes up；School shape tooling is made, left and right trench each one, school shape tooling is in
Sector structure；High-ranking officers' shape tooling is put into two grooves of circular cylinder, and high-ranking officers' shape tooling is fixed, and heating circular cylinder needs
Then the position of closing in taps and closes up, until sheet shape is bonded with school shape tooling at closing in.
It further, further include Step 9: detection；Helium mass spectrum leak detection is carried out to the tubular sheet metal component with radial arc section,
The detection device is helium mass spectrometer leak detector, and leak rate is not more than 1x10-11Pa.m3/s。
Further, in step 7, when welding, the inner cavity of circular cylinder is passed through argon gas protection, prevents inside weld from aoxidizing
Object.
Further, in step 7, postwelding smears pickling paste in outer commissure, removes the oxidation tint at outside weld.
Further, there are machining allowance in step 1 specifically: respectively stays 50mm at the length direction both ends of blank steel plate
Process allowance respectively stays 100mm process allowance at the width direction both ends of blank steel plate.
Further, after the completion of step 1 blanking, further include the steps that blank steel plate deburring.
Compared with prior art, the present invention having following technical effect that
1. the method for the present invention utilizes the existing roller machine of factory and hydraulic machining part, setting particular manufacturing craft is avoided,
It does not need separately to purchase equipment, to reduce old.
2. traditional drawing or punching production mode, forming parts speed quickly, will lead to sheet metal component in process and mould
Property deformation it is uneven, some local uneven distributions of finished product.Blank is rolled into semi-cylindrical shaped, roller using roller machine by the present invention
Machining is to fill in plate in the roller bearing of roller machine, and roller bearing, which is slowly rotated and pushed, makes sheet metal deformation, and shaping speed is slow, avoids
The case where product uneven distribution.
3. the method for the present invention needs the mold shape processed compared with the plate that small, processing method is simple, quantity is few and uses
Material is relatively cheap, effectively save production cost.
Detailed description of the invention
Fig. 1 is tubular sheet metal component structure figure of the present invention with radial arc section；
Fig. 2 is the hydraulic machined grooves schematic diagram of the method for the present invention；
Fig. 3 is the blank steel plate schematic diagram of the method for the present invention hydro-forming；
Fig. 4 is that the method for the present invention support tube fills out husky and closure schematic diagram；
Fig. 5 is the method for the present invention support tube spot welding schematic diagram；
Fig. 6 is that schematic diagram is reinforced in the spot welding of the method for the present invention support plate；
Fig. 7 is the molding semi-finished product schematic diagram of the method for the present invention roller；
Fig. 8 is that the method for the present invention modifies the semi-finished product schematic diagram after shape；
Fig. 9 is the method for the present invention part welding shaping schematic view；
Figure 10 is the method for the present invention school shape tooling machining sketch chart；
Figure 11 is the method for the present invention school shape tooling side view；
Figure 12 is that the method for the present invention closes up and removes the finished product schematic after surplus.
Specific embodiment
The contents of the present invention are described in further detail below in conjunction with the drawings and specific embodiments.
As shown in Fig. 1, Figure 12, cartridge type outer cover (the tubular sheet metal component i.e. with radial arc section) diameter of bore φ of the present invention
226, metal plate thickness 2mm, material are austenitic stainless steel 06Cr19Ni10, which is tubular structure, cylinder is radially set
There are two semicircle segmental arcs, are processed into cartridge type by plate roller, and according to roller machine productive prospecting, part fractionation is processed into two
Semi cylindrical type, then welding is integral.
A kind of tubular sheet metal component processing method of band radial direction arc section, comprising the following steps:
Step 1: blanking；
According to the design drawing of the tubular sheet metal component with radial arc section, the practical developed dimension of blanking of semicircular cylinder is calculated,
Blank steel plate is rectangle plain plate, thickness 2mm, two pieces.On the basis of actually expansion is long, part length direction both ends
50mm process allowance is respectively stayed, closes up and modifies for the later period, 100mm process allowance is respectively stayed at part circumferencial direction both ends, because of rolling
After circle, it is straight section rolling not camber that circumferencial direction, which has one section, and the made allowance later period is needed to cut off straight section；
Deburring after blank steel plate cutting prevents from scratching staff；
Step 2: hydraulic machined grooves；
As shown in Figure 2 and Figure 3, blank steel plate is extruded to two arc grooves of part on a hydraulic press,
This step needs to make mold, and upper die and lower die each one, mold materials are carbon steel Q235-A, upper mold lower surface
Shape is consistent with the section shape of part arc groove inner tube wall, the shape of lower die upper surface and the section of arc groove outer surface
Shape is consistent, and when hydraulic, lower die is fixed, and blank steel plate is placed in lower die, and hydraulic press drives the downward pressing formation of upper mold；
Step 3: support tube fills out sand；
As shown in figure 4, preparing four φ 22x2 support tubes, support length of tube is identical as the trench length size of blank,
In steel casing pack sand, abutment pier reality is filled on one side, completes sand, block support tube both ends nozzle with stopper, support effective
Way is played a supportive role for the processing of later period blank roller, to reduce workpiece deformation；
It selects the support tube for filling up sand to support, cannot directly use bar, because when later period roller, support tube and blank
Semi-circular shape is bent to together, it is thick if rigidity too swift machine is curved motionless, and similarly thickness of steel pipe takes 2mm to be advisable with bar
Curved motionless, thin intensity difference does not have supporting role；
Step 4: spot welding support tube；
At the semi arch rounding off of arc groove, four φ 22x2 stainless steel support tubes are placed, to prevent subsequent rolling
Steel pipe position is mobile when cylinder, positions to steel pipe spot welding, spacing 100mm between each solder joint, and spot welding position is as shown in Figure 5；
Step 5: spot welding support plate；
As shown in fig. 6, the spot welding 1mm thickness support plate below blank, backing plate length and width dimensions are consistent with blank；
Step 6: rolling semicircular cylinder；
As shown in Figure 7, Figure 8, existing roller machine in factory, processing characteristic are sheet metal can be rolled into cylinder
Shape, or thick steel plate is rolled into semi-cylindrical shaped；Blank at this time can be taken as the thick steel plate of thickness 25mm, be put into roller
The semicircular cylinder of internal diameter R113 is rolled into machine, because of Equipment, after round as a ball, circumferencial direction have one section be straightway rolling not at
Arc；After drum forming, measures part size and modify shape, cut off circumferencial direction straight section, remove support tube and support plate；
Step 7: welding；
As shown in figure 9, taking two semi-cylindrical shaped semi-finished product, argon arc welding welding is integral, and when welding, inner cavity of component is passed through argon
Gas shielded prevents inside weld from oxide occur；Postwelding smears pickling paste in outer commissure, removes the oxidation tint at outside weld.
Step 8: school shape closes up；
As shown in Figure 10, Figure 11, it closes up for part and makes school shape tooling, left and right trench each one, school shape tooling is in 90 ° of fans
Shape, arc section section shape is consistent with grooved inner surface size, and material is carbon steel Q235-A, and tooling is processed into sector herein
Rather than patty, because patty tooling is not placed into groove；
High-ranking officers' shape tooling is put into two grooves of blank, and high-ranking officers' shape tooling is fixed, with acetylene-oxygen gas
The position that the flame heating blank of cutting mill needs to close up, then hit with a hammer closing in, until sheet shape and work at closing in
Dress fitting, since tooling is sector, part closing in divides multistage to carry out, and close up an edge central axes rotating part on one side；Part is received
It after the completion of mouthful, is cut with plasma cutting machine, removes the material technology surplus at part both ends, and modify molding.
Step 9: detection；
It since part is used for vaccum working condition, should be required according to detail of design, the inspection of helium mass spectrum is carried out to part and two weld seams
Leakage, leak rate are not more than 1x10-11Pa.m3/ s, detection device are helium mass spectrometer leak detector, after detection is qualified, part process finishing.
Claims (7)
1. a kind of tubular sheet metal component processing method of band radial direction arc section, which comprises the following steps:
Step 1: blanking；
According to the size of the tubular sheet metal component with radial arc section, the practical developed dimension of blank steel plate of semicircular cylinder is calculated,
Blank steel plate is two pieces rectangle plain plate, and there are machining allowance；
Step 2: hydraulic machined grooves；
Blank steel plate is extruded into two arc grooves by hydraulic press；
Step 3: support tube fills out sand；
Prepare four steel pipes, length of steel pipe is identical as the arc groove length of blank steel plate, in steel casing pack sand, and blocks
Steel pipe both ends nozzle；
Step 4: spot welding support tube；
At the rounding off of arc groove, four support tubes are placed, and position to support tube and blank steel plate spot welding；
Step 5: spot welding support plate；
Support plate is set in the bottom end of support tube, and by support plate and support tube spot welding；
Step 6: rolling semicircular cylinder；
The blank steel plate of postwelding, support plate, support tube are rolled into semi-cylindrical shaped by roller machine, and cut off machining allowance,
Then support plate, support tube are removed；
Step 7: welding；
Two semi-cylindrical shapeds are welded into unitary circular cylinder.
2. the tubular sheet metal component processing method of band radial direction arc section according to claim 1, it is characterised in that: further include step
Rapid eight, school shape closes up；
Production school shape tooling, left and right trench each one, the fan-shaped structure of school shape tooling；
High-ranking officers' shape tooling is put into two grooves of circular cylinder, and high-ranking officers' shape tooling is fixed, and heating circular cylinder needs to close up
Position, then tap close up, until closing at sheet shape be bonded with school shape tooling.
3. the tubular sheet metal component processing method of band radial direction arc section according to claim 2, it is characterised in that: further include step
Rapid nine, it detects；
Helium mass spectrum leak detection is carried out to the tubular sheet metal component with radial arc section, detection device is helium mass spectrometer leak detector, and leak rate is little
In 1x10-11Pa.m3/s。
4. the tubular sheet metal component processing method of band radial direction arc section according to claim 1 or 2 or 3, which is characterized in that step
In rapid seven, when welding, the inner cavity of circular cylinder is passed through argon gas protection, prevents inside weld from oxide occur.
5. the tubular sheet metal component processing method of band radial direction arc section according to claim 4, which is characterized in that step 7
In, postwelding smears pickling paste in outer commissure, removes the oxidation tint at outside weld.
6. the tubular sheet metal component processing method of band radial direction arc section according to claim 5, which is characterized in that in step 1
There are machining allowance specifically: 50mm process allowance is respectively stayed at the length direction both ends of blank steel plate, in the width of blank steel plate
Respectively stay 100mm process allowance in direction both ends.
7. the tubular sheet metal component processing method of band radial direction arc section according to claim 6, it is characterised in that: under step 1
After the completion of material, further include the steps that blank steel plate deburring.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811519978.3A CN109732275B (en) | 2018-12-12 | 2018-12-12 | Method for machining cylindrical sheet metal part with radial arc section |
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| CN201811519978.3A CN109732275B (en) | 2018-12-12 | 2018-12-12 | Method for machining cylindrical sheet metal part with radial arc section |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113927256A (en) * | 2021-11-18 | 2022-01-14 | 航天科工哈尔滨风华有限公司 | Machining method for large titanium alloy thin-wall deep-cavity cabin formed through laser deposition |
| CN114083169A (en) * | 2021-12-13 | 2022-02-25 | 上海无线电设备研究所 | Flexible connection process method and tool for converting radio frequency coaxial to microstrip |
| CN115156854A (en) * | 2022-07-26 | 2022-10-11 | 贵州航天电子科技有限公司 | Machining method for semicircular columnar shell part |
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| CN1184722A (en) * | 1997-12-24 | 1998-06-17 | 章新生 | Flexibly rolled double metal bend, method for producing same, device for rolling internal wall thereof |
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