CN107537244A - Screen pipe and processing mold are burnt in one-shot forming modeling - Google Patents
Screen pipe and processing mold are burnt in one-shot forming modeling Download PDFInfo
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- CN107537244A CN107537244A CN201710621969.4A CN201710621969A CN107537244A CN 107537244 A CN107537244 A CN 107537244A CN 201710621969 A CN201710621969 A CN 201710621969A CN 107537244 A CN107537244 A CN 107537244A
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- 238000001914 filtration Methods 0.000 claims abstract description 11
- 230000000694 effects Effects 0.000 claims abstract description 7
- 238000004026 adhesive bonding Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 57
- 239000000843 powder Substances 0.000 claims description 45
- 239000006227 byproduct Substances 0.000 claims description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 16
- 238000011049 filling Methods 0.000 claims description 14
- 238000005245 sintering Methods 0.000 claims description 14
- 239000011812 mixed powder Substances 0.000 claims description 12
- 238000005516 engineering process Methods 0.000 claims description 10
- 239000003063 flame retardant Substances 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000010791 quenching Methods 0.000 claims description 10
- 230000000171 quenching effect Effects 0.000 claims description 10
- 239000002033 PVDF binder Substances 0.000 claims description 9
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 9
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 claims description 9
- YUWBVKYVJWNVLE-UHFFFAOYSA-N [N].[P] Chemical compound [N].[P] YUWBVKYVJWNVLE-UHFFFAOYSA-N 0.000 claims description 9
- 239000000919 ceramic Substances 0.000 claims description 9
- 239000011521 glass Substances 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- 229920002530 polyetherether ketone Polymers 0.000 claims description 9
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 9
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 9
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 9
- 239000002994 raw material Substances 0.000 claims description 9
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 claims description 9
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 7
- LGXVIGDEPROXKC-UHFFFAOYSA-N 1,1-dichloroethene Chemical class ClC(Cl)=C LGXVIGDEPROXKC-UHFFFAOYSA-N 0.000 claims description 6
- 238000000137 annealing Methods 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 6
- 230000003746 surface roughness Effects 0.000 claims description 6
- 239000000428 dust Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 claims description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 3
- 230000001464 adherent effect Effects 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000005660 chlorination reaction Methods 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011247 coating layer Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 235000019628 coolness Nutrition 0.000 claims description 3
- 238000005336 cracking Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims description 3
- 229910052731 fluorine Inorganic materials 0.000 claims description 3
- 239000011737 fluorine Substances 0.000 claims description 3
- 229920001903 high density polyethylene Polymers 0.000 claims description 3
- 239000004700 high-density polyethylene Substances 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 239000004615 ingredient Substances 0.000 claims description 3
- 239000010410 layer Substances 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 238000010422 painting Methods 0.000 claims description 3
- 239000002861 polymer material Substances 0.000 claims description 3
- 238000010079 rubber tapping Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000006467 substitution reaction Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 claims description 2
- 239000003513 alkali Substances 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 230000035699 permeability Effects 0.000 claims description 2
- 230000008929 regeneration Effects 0.000 claims description 2
- 238000011069 regeneration method Methods 0.000 claims description 2
- 239000000758 substrate Substances 0.000 claims description 2
- 239000003610 charcoal Substances 0.000 claims 1
- 239000002245 particle Substances 0.000 claims 1
- 229920000297 Rayon Polymers 0.000 abstract description 2
- 239000003292 glue Substances 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The present invention discloses one-shot forming modeling and burns screen pipe, and the inside of screen pipe is hollow core structures, and screen pipe is cylindrical cavity for the inside of cylinder, using one-shot forming, it is not necessary to gluing company.Formed by core-pulling die time processing, it is not necessary to still further with gluing company.The advantages of this screen pipe is that one-shot forming is not ftractureed, it is not necessary to viscose glue, is saved artificial, there is provided operating efficiency.It is durable in use, good filtration effect.
Description
Technical field
The present invention and invention are a kind of fire resistant filter material filter and special die processing technique field, are specifically
Screen pipe and its core-pulling die are burnt in one-shot forming modeling.
Background technology
It is a kind of more advanced filtering material and air cleaner in the world that cylinder is burnt in modeling, has filtering accuracy high, uses
Long lifespan, the features such as acid-fast alkali-proof is corrosion-resistant, electronics is widely used in, biochemical, pharmacy, food, steel, automobile, national defence, space flight
Deng field.
Processed both at home and abroad using one chip, then be rolled into cylinder and then bond and form the mode of filter plate cylinder and make, such as Fig. 1 institutes
Show, such a method flow is more, and employment thing is more, and power consumption is high, and bonding intensity is bad, and percent defective is high, especially needs in use
Deashing processing carried out to screen pipe, easily occur the phenomenon come unglued bonding part in deashing process, service life shortens.
The content of the invention
The present invention is disposably to sinter integral modeling using mould made of high-quality heat resisting steel to burn pipe filter cylinder.With flow
The features such as few, efficiency high, precision is high, physical property height, and cost is low.
The technical solution adopted by the present invention is：
Screen pipe is burnt in one-shot forming modeling, and the inside of screen pipe is hollow core structures, has upper filter and lower filter, middle
There are multiple connecting poles to connect, be separated out multiple filter chambers；The upper filter of screen pipe and lower filter and middle connecting pole are one
Secondary shaping, it is not necessary to still further with gluing company.
Screen pipe raw material is matched as follows by mass fraction：
Major ingredient is 80 parts of CPE, and auxiliary material is 20 parts of mixing；
Auxiliary material component is matched by mass fraction：Ultra-high molecular weight polyethylene 25-35 parts, glass microballoon 20-30 parts, shell
Activated carbon 30-40 parts, PPS powder 10-20 parts, PTFE powder 60-70 parts, ceramic powder 10-20 parts, PVDF vinylidene chloride powders
30-40 parts, nitrogen phosphorus system expanding fire retardant 10-15 parts, polyether-ether-ketone 5-10 parts, silicate 3-10 parts；
CPE is that the high polymer material molecular weight as made from high density HDPE through chlorination substitution reaction is 100-800 ten thousand, grain
Footpath 20-60 mesh.
Screen pipe composition is matched as follows by mass fraction：
30 parts of ultra-high molecular weight polyethylene, 25 parts of glass microballoon, 35 parts of shell activated carbon, 15 parts of PSP powders, PTFE powder
Not 65 parts, 15 parts of ceramic powder, 36 parts of PVDF vinylidene chlorides powder, 15 parts of nitrogen phosphorus system expanding fire retardant, 5 parts of polyether-ether-ketone, silicic acid
3 parts of salt.
Mould includes mold, lower mould and multiple core-pulling dies, and the corresponding surface of mold and lower mould is in semicircle
Groove；
Upper and lower mould is fastenedly connected by multiple bolts one；Core-pulling die is cylinder；
Each core-pulling die one end has more than two through holes, and core-pulling die passes through the bolt two and core through through hole
Mould fixed plate is fastenedly connected, and multiple core-pulling dies are arranged in a row or a few rows by core mold fixing plate；Then core mold fixing plate passes through spiral shell
Bolt three is fastenedly connected with upper and lower mould end face；
Each core-pulling die the other end has positioning hole, and the locating shaft of core location-plate passes through positioning hole and core-pulling die
Connection is fixed, core location-plate bolt is affixed after being positioned with upper and lower mould, core-pulling die is hung on mold, lower mould
Between, form cylindric charging space；Core location-plate is provided with multiple semicircle material filling mouths, and the material filling mouth feeds with cylindric
Space is corresponding to be arranged；Sealed after the positioning of core location-plate with feed inlet shrouding；
The semi-cylindrical hill of feed inlet shrouding and semicircle material filling mouth are corresponding affixed；
Core-pulling die can also be square, and corresponding upper and lower mould is also square inner groovy.
Mold, lower mold materials are as follows, are by mass percentage：
C 0.37%, Mn 1.1%, Cr 2.0%, Ni 0.5%, Mo 0.4%, S<0.006%, surplus is Fe；
Core-pulling die material is as follows, is by mass percentage：
C 0.38%, Mn 0.4%, Si1.0%, Cr5.0%, Mo1.3%, V1.0%, surplus are Fe；
Stiffened processing：The temperature requirement used to enable mould to reach, quenching is implemented to material plus lonneal adds
Hard mode is realized；First in 500 DEG C of -600 DEG C of preheating 2-4 hours during quenching, then in 850 DEG C of -880 DEG C of held for some time,
It is put into oil and is cooled to 50 DEG C of -100 DEG C of fuel-displaced air coolings, quenching hardness is up to 50-52HRC, to prevent cracking from carrying out 200 DEG C immediately
Lonneal processing, temper number is up to 48HRC.
The processing technology of mold, lower mould：
1. blanking：100mmX660mmX1620. upper and lower moulds each one, totally 2；
2. roughing：Appearance and size is machined to 90mmX650mmX1610mm；
3. remove material internal stress：Vibration removes 2 hours, and timeliness removed the time as one week；
4. half roughing：
1. appearance and size is processed into 84mmX640mmX1600mm；
2. mould back side angle hollow out at 45 °, size 100mmX100mm, deep 15mm grid, grid spacing 15mm；
3. the shrinkage ratio 2.1% that dies cavity size is burnt cylinder material by product size plus modeling is processed, allowance 2mm；
5. remove material internal stress：Vibration removes 2 hours, and timeliness removed the time as one week；
6. finishing：The shrinkage ratio 2.1% that dies cavity size is burnt cylinder material by product size plus modeling is processed, allowance
1mm；
7. finishing impression：The shrinkage ratio 2.1% that dies cavity size is burnt cylinder material by product size plus modeling is processed, allowance 0.1-
0.2mm；
8. drilling, tapping；
9. stiffened is handled, hardness 45HRC；
10. grinding, is polished to and is sized, surface roughness is in more than Ra0.4.
The processing technology of core-pulling die：
1. blanking：φ 60mmX1620mm, totally 8；
2. roughing：Appearance and size is machined to φ 55mmX1600mm；
3. remove material internal stress：Vibration removes 2 hours, and hanging timeliness removed the time as one week；
4. half roughing：The shrinkage ratio 2.1% that size is burnt cylinder material by product size plus modeling is processed, allowance 2mm；
5. remove material internal stress：Vibration removes 2 hours, and hanging timeliness removed the time as one week；
6. finishing：The shrinkage ratio 2.1% that size is burnt cylinder material by product size plus modeling is processed, allowance 1mm；
7. finishing impression：The shrinkage ratio 2.1% that size is burnt cylinder material by product size plus modeling is processed, allowance 0.1-0.2mm；
8. grinding, is polished to size, surface roughness is in more than Ra0.4；
9. adherent layer is scribbled outside mould；
Core mold fixing plate processing technology：
1. require to coordinate closely with core pulling template；
2. coordinating with upper/lower die to get well, keeping core pulling template, gap is unanimously 3.6mm- up and down in die main body
3.7mm；
Core positions board machining process：
It is required that worked good with die main body and core-pulling die, core-pulling die gap one up and down in upper/lower die is kept
Cause as 3.6mm-3.7mm；
The requirement of mould feed inlet shrouding is worked good with upper/lower die, is not more than 1.2mm with core-pulling die termination distance.
8th, the processing mold of screen pipe is burnt in one-shot forming modeling according to claim 4, it is characterised in that
The sintering process of cylinder is burnt in mould application method and modeling:
1st, will make modeling burning cylinder composition mixes as follows, 30 parts of ultra-high molecular weight polyethylene, glass microballoon by mass fraction
25 parts, 35 parts of shell activated carbon, 15 parts of PPS powders, 65 parts of PTFE powders, 15 parts of ceramic powder, 36 parts of PVDF vinylidene chlorides powder,
15 parts of nitrogen phosphorus system expanding fire retardant, 5 parts of polyether-ether-ketone, 3 parts of silicate；Above-mentioned raw materials are placed in three-dimensional powder mixer, mixing
15-20min is stirred, it is standby to eventually form well mixed powder；
Mould assembling process：
1. after must not having any dust, impurity, residue, releasing agent is uniformly smeared for mould wiped clean with flannelette
In the zigzag inner chamber of die main body upper and lower mould and on each surface of fuse, it is desirable to smear uniform exhaustive, coating layer thickness is
0.1mm；
2. upper and lower dies cavity semi-circular grooves are corresponded into error to be fixed with bolt no more than 0.1mm assemblings；
3. by core-pulling die, gap is consistent as 3.6mm-3.7mm up and down in upper and lower die main body, then
Fixed with core mold fixing plate and the positioning of core location-plate, feed inlet shrouding does not assemble；Ensure that each bolt is tightened, between each part
It is seamless；
4. by after matched moulds mould erect be placed on shaking platform, feed inlet is upward, open shaking platform, make mould with
Shaking platform is vibrated, and mixed powder is homogeneously added at mould feed inlet, and powder volume is precalculated, is treated
After powder is all added in mould, that is, after filling it up with mixed powder, shaking platform is closed, feed inlet shrouding is covered and tightens spiral shell
Silk；
5. the mould for filling mixed powder is put into electrical heating sintering furnace and carries out heat temperature raising, set temperature value is raised to
After 180 DEG C -220 DEG C, this temperature 100min is kept, electrical heating sintering furnace is stopped；
6. mould is taken out from stove, cold water spray 10-15min is carried out, mold surface temperature is down to 50 DEG C -60 DEG C,
Then on core pulling platform, by the pulling force of setting value, taken out by the core-pulling die of tube bundle extracting machine handle, then mold upper and lower mould
Take out one-time formed primary modeling and burn cylinder, sintering is completed.
7. after modeling is burnt into one-shot forming screen pipe surface spraying painting fluorine liquid, it is sent in electrical heating annealing furnace, carries out at annealing
Reason.After reaching desired temperature, taken out from stove, pair secondly face both ends are repaired, and on the operational platform, grow chopped
Cut；Plus both ends end cap, filtering monolithic is made.
Core pulling process is as follows：
The mould after matched moulds is fixed by bearing pin on core pulling platform, tube bundle extracting machine is fixed in the other end, and tube bundle extracting machine includes taking out
Core arm-tie and hydraulic cylinder；Core pulling arm-tie is bolted on core mold fixing plate both ends, core pulling arm-tie is fixed with hydraulic cylinder to be connected
Connect, hydraulic cylinder presses the pulling force of setting value, slowly pulls out core-pulling die from upper/lower die under the driving of hydraulic electric motor.
It is an advantage of the invention that：
1st, upper/lower die feature of the present invention：
1.1 hardness are uniform, intensity, toughness, and wearability is good.
1.2 have good processing characteristics, Cutting free, polishing and galvanic corrosion.
1.3 inoxidizability and good corrosion resistance.
1.4 through hardening performances and thermostrength are good, can keep enough intensity and creep resisting ability at high temperature under high pressure, be not easy
Deformation.Access times are more than 200,000 times, service life length.
2nd, core-pulling die feature of the present invention:
2.1 polishing performances are excellent, Cutting free, high tenacity and ductility.
2.2 material thickness longitudinal direction is consistent with transverse strength heat-resist.
2.3 high/low temperatures have good wearability.
2.4 elevated temperature strengths and thermal fatigue resistance are excellent.
2.5 quenching degree are excellent, heat treatment deformation very little.
3rd, the fire-retardant raw material of the invention containing CPE, according to proportioning, be able to can make in more than more than 400 DEG C this product of temperature in use
Used with more than 400 DEG C environment above of environment.
4th, it is that one-shot forming is not ftractureed the advantages of this screen pipe, it is not necessary to viscose glue, save artificial, there is provided operating efficiency.Through
Long durable, good filtration effect.
Brief description of the drawings
Fig. 1 existing product profiles.
Fig. 2 is the product structure figure of the present invention.
Fig. 3 is the exploded view before mould matched moulds.
Fig. 4 is the sectional view after matched moulds.
Fig. 5 is top view after mould matched moulds.
Fig. 6 is mold side view.
Fig. 7 is lower mould side view.
Fig. 8 core-pulling dies arrange schematic diagram.
Fig. 9 core-pulling dies arrange side view.
Figure 10 core mold fixing plate side views.
Figure 11 core mold fixing plate top views.
Figure 12 core location-plate schematic diagrames.
Figure 13 core location-plate side views.
Figure 14 feed inlet shrouding schematic diagrames.
Figure 15 feed inlet shrouding top views.
Figure 16 feed inlet shrouding side views.
Figure 17 mould core pulling platform core pulling top views.
Top view after Figure 18 mould core pulling platform core pullings.
Pipe use state figure is burnt in Figure 19 modelings.
Embodiment
With reference to Figure of description 1-19, the present invention is described in more detail.
Screen pipe is burnt in one-shot forming modeling, and the inside of screen pipe is hollow core structures, has upper filter and lower filter, middle
There are multiple connecting poles to connect, be separated out multiple filter chambers；The upper filter of screen pipe and lower filter and middle connecting pole are one
Secondary shaping, it is not necessary to still further with gluing company.
Screen pipe raw material is matched as follows by mass fraction：
Major ingredient is 80 parts of CPE, and auxiliary material is 20 parts of mixing；
Auxiliary material component is matched by mass fraction：Ultra-high molecular weight polyethylene 25-35 parts, glass microballoon 20-30 parts, shell
Activated carbon 30-40 parts, PPS powder 10-20 parts, PTFE powder 60-70 parts, ceramic powder 10-20 parts, PVDF vinylidene chloride powders
30-40 parts, nitrogen phosphorus system expanding fire retardant 10-15 parts, polyether-ether-ketone 5-10 parts, silicate 3-10 parts；
CPE is that the high polymer material molecular weight as made from high density HDPE through chlorination substitution reaction is 100-800 ten thousand, grain
Footpath 20-60 mesh.
Screen pipe composition is matched as follows by mass fraction：
30 parts of ultra-high molecular weight polyethylene, 25 parts of glass microballoon, 35 parts of shell activated carbon, 15 parts of PSP powders, PTFE powder
Not 65 parts, 15 parts of ceramic powder, 36 parts of PVDF vinylidene chlorides powder, 15 parts of nitrogen phosphorus system expanding fire retardant, 5 parts of polyether-ether-ketone, silicic acid
3 parts of salt.
Mould includes mold 1, lower mould 3 and multiple core-pulling dies 2, and the corresponding surface of mold 1 and lower mould 3 is semicircle
Shape inner groovy 6；
Upper and lower mould is fastenedly connected by multiple bolts 1；Core-pulling die is cylinder；
Each one end of core-pulling die 2 has more than two through holes 7, and core-pulling die 2 passes through the bolt two through through hole 7
8 are fastenedly connected with core mold fixing plate 9, and multiple core-pulling dies are arranged in a row or a few rows by core mold fixing plate 9；Then core mold fixing plate
9 are fastenedly connected by multiple bolts 3 10 and upper and lower mould end face；
Each the other end of core-pulling die 2 has a positioning hole 11, the locating shaft 13 of core location-plate 12 by positioning hole with
Core-pulling die fixes connection, and core location-plate 12 is affixed after being positioned with multiple bolts 4 14 with upper and lower mould, makes core-pulling die 2
It is hung between mold, lower mould, forms cylindric charging space 16；Core location-plate 12 is provided with multiple semicircle material fillings
Mouth 15, the material filling mouth 15 should be arranged with cylindrical shape charging space to 16；Core location-plate 12 is close with feed inlet shrouding 17 after positioning
Envelope；
The semi-cylindrical hill 18 of feed inlet shrouding 17 and semicircle material filling mouth 15 are corresponding affixed；Feed inlet shrouding 17 is by more
Individual bolt 5 19 and mold, lower mould are affixed；
Core-pulling die can also be square, and corresponding upper and lower mould is also square inner groovy.
Mold, lower mold materials are as follows, are by mass percentage：
C 0.37%, Mn 1.1%, Cr 2.0%, Ni 0.5%, Mo 0.4%, S<0.006%, surplus is Fe；
Core-pulling die material is as follows, is by mass percentage：
C 0.38%, Mn 0.4%, Si1.0%, Cr5.0%, Mo1.3%, V1.0%, surplus are Fe；
Stiffened processing：The temperature requirement used to enable mould to reach, quenching is implemented to material plus lonneal adds
Hard mode is realized；First in 500 DEG C of -600 DEG C of preheating 2-4 hours during quenching, then in 850 DEG C of -880 DEG C of held for some time,
It is put into oil and is cooled to 50 DEG C of -100 DEG C of fuel-displaced air coolings, quenching hardness is up to 50-52HRC, to prevent cracking from carrying out 200 DEG C immediately
Lonneal processing, temper number is up to 48HRC.
The processing technology of mold, lower mould：
1. blanking：100mmX660mmX1620. upper and lower moulds each one, totally 2；
2. roughing：Appearance and size is machined to 90mmX650mmX1610mm；
3. remove material internal stress：Vibration removes 2 hours, and timeliness removed the time as one week；
4. half roughing：
1. appearance and size is processed into 84mmX640mmX1600mm；
2. mould back side angle hollow out at 45 °, size 100mmX100mm, deep 15mm grid, grid spacing 15mm；
3. the shrinkage ratio 2.1% that dies cavity size is burnt cylinder material by product size plus modeling is processed, allowance 2mm；
5. remove material internal stress：Vibration removes 2 hours, and timeliness removed the time as one week；
6. finishing：The shrinkage ratio 2.1% that dies cavity size is burnt cylinder material by product size plus modeling is processed, allowance
1mm；
7. finishing impression：The shrinkage ratio 2.1% that dies cavity size is burnt cylinder material by product size plus modeling is processed, allowance 0.1-
0.2mm；
8. drilling, tapping；
9. stiffened is handled, hardness 45HRC；
10. grinding, is polished to and is sized, surface roughness is in more than Ra0.4.
The processing technology of core-pulling die：
1. blanking：φ 60mmX1620mm, totally 8；
2. roughing：Appearance and size is machined to φ 55mmX1600mm；
3. remove material internal stress：Vibration removes 2 hours, and hanging timeliness removed the time as one week；
4. half roughing：The shrinkage ratio 2.1% that size is burnt cylinder material by product size plus modeling is processed, allowance 2mm；
5. remove material internal stress：Vibration removes 2 hours, and hanging timeliness removed the time as one week；
6. finishing：The shrinkage ratio 2.1% that size is burnt cylinder material by product size plus modeling is processed, allowance 1mm；
7. finishing impression：The shrinkage ratio 2.1% that size is burnt cylinder material by product size plus modeling is processed, allowance 0.1-0.2mm；
8. grinding, is polished to size, surface roughness is in more than Ra0.4；
9. adherent layer is scribbled outside mould；
Core mold fixing plate processing technology：
1. require to coordinate closely with core pulling template；
2. coordinating with upper/lower die to get well, keeping core pulling template, gap is unanimously 3.6mm- up and down in die main body
3.7mm；
Core positions board machining process：
It is required that worked good with die main body and core-pulling die, core-pulling die gap one up and down in upper/lower die is kept
Cause as 3.6mm-3.7mm；
The requirement of mould feed inlet shrouding is worked good with upper/lower die, is not more than 1.2mm with core-pulling die termination distance.
The sintering process of cylinder is burnt in mould application method and modeling:
1st, will make modeling burning cylinder composition mixes as follows, 30 parts of ultra-high molecular weight polyethylene, glass microballoon by mass fraction
25 parts, 35 parts of shell activated carbon, 15 parts of PPS powders, 65 parts of PTFE powders, 15 parts of ceramic powder, 36 parts of PVDF vinylidene chlorides powder,
15 parts of nitrogen phosphorus system expanding fire retardant, 5 parts of polyether-ether-ketone, 3 parts of silicate；Above-mentioned raw materials are placed in three-dimensional powder mixer, mixing
15-20min is stirred, it is standby to eventually form well mixed powder；
Mould assembling process：
1. after must not having any dust, impurity, residue, releasing agent is uniformly smeared for mould wiped clean with flannelette
In the zigzag inner chamber of die main body upper and lower mould and on each surface of fuse, it is desirable to smear uniform exhaustive, coating layer thickness is
0.1mm；
2. upper and lower dies cavity semi-circular grooves are corresponded into error to be fixed with bolt no more than 0.1mm assemblings；
3. by core-pulling die, gap is consistent as 3.6mm-3.7mm up and down in upper and lower die main body, then
Fixed with core mold fixing plate and the positioning of core location-plate, feed inlet shrouding does not assemble；Ensure that each bolt is tightened, between each part
It is seamless；
4. by after matched moulds mould erect be placed on shaking platform, feed inlet is upward, open shaking platform, make mould with
Shaking platform is vibrated, and mixed powder is homogeneously added at mould feed inlet, and powder volume is precalculated, is treated
After powder is all added in mould, that is, after filling it up with mixed powder, shaking platform is closed, feed inlet shrouding is covered and tightens spiral shell
Silk；
5. the mould for filling mixed powder is put into electrical heating sintering furnace and carries out heat temperature raising, set temperature value is raised to
After 180 DEG C -220 DEG C, this temperature 100min is kept, electrical heating sintering furnace is stopped；
6. mould is taken out from stove, cold water spray 10-15min is carried out, mold surface temperature is down to 50 DEG C -60 DEG C,
Then on core pulling platform, by the pulling force of setting value, taken out by the core-pulling die of tube bundle extracting machine handle, then mold upper and lower mould
Take out one-time formed primary modeling and burn cylinder, sintering is completed.
7. after modeling is burnt into one-shot forming screen pipe surface spraying painting fluorine liquid, it is sent in electrical heating annealing furnace, carries out at annealing
Reason.After reaching desired temperature, taken out from stove, pair secondly face both ends are repaired, and on the operational platform, grow chopped
Cut；Plus both ends end cap, filtering monolithic is made.
Core pulling process is as follows：
The mould after matched moulds is fixed by bearing pin 5 in one end on core pulling platform 20, and tube bundle extracting machine is fixed in the other end, tube bundle extracting machine
Including core pulling arm-tie 21 and hydraulic cylinder 22；Core pulling arm-tie 21 is fixed on the both ends of core mold fixing plate 9, core pulling arm-tie by bolt six
21 are fixedly connected with hydraulic cylinder 22, and hydraulic cylinder 22 presses the pulling force of setting value, pull out the slow level of core-pulling die under driving,
Lower mould, core pulling process is then completed into upper/lower die die sinking.
The performance parameter of screen pipe, porosity 0.5~1 μm of aperture, reach up to 36% to less than 2 μm of dust filtration efficiency
To more than 99.995%；0.1 μm of filtering accuracy, running resistance≤950Pa, service life >=8 year, due to improve sintering skill and
Composition of raw materials is improved, ensure that the micropore in screen pipe substrate body is more uniform, heat-resisting quantity is stronger, and gas permeability is more preferable, often
The filter area of the screen pipe of formalism number can be up to 9 ㎡, and the filter area in same volume is 2-3 times of filter bag, superpower
Self-cleaning ability, it is ensured that filter pressure loss is small, and stably.With higher intensity and toughness, it is amenable to thousands of daily
The repeated stock of secondary gases at high pressure.Excellent mechanical performance, superpower high temperature resistant, acidproof alkali ability are perfect to be imitated from deashing
Fruit, after normal service life is reached, by carrying out the regeneration of coating to the surface of abrasion, it can still realize same new production
The same effect of screen pipe.
Monolithic mold burns cylinder Contrast on effect with one chip Mold Making modeling
Moulding burning cylinder filter cylinder using the Mold Making of integral one-step molding formula reduces flow, improves efficiency.Improve production
Quality, the physical property of product is improved, improve the dimensional accuracy of product, reduce the cost of manufacture of product again.
Claims (10)
1. screen pipe is burnt in one-shot forming modeling, it is characterised in that：
Screen pipe is cylindrical cavity for the inside of cylinder, using one-shot forming, it is not necessary to gluing company.
2. screen pipe is burnt in one-shot forming modeling according to claim 1, it is characterised in that screen pipe raw material is matched somebody with somebody by mass fraction
Than as follows：
Major ingredient is 80 parts of CPE, and auxiliary material is 20 parts of mixing；
Auxiliary material component is matched by mass fraction：Ultra-high molecular weight polyethylene 25-35 parts, glass microballoon 20-30 parts, shell activity
Charcoal 35-40 parts, PPS powder 15-20 parts, PTFE powder 50-70 parts, ceramic powder 10-20 parts, PVDF vinylidene chloride powders 30-40
Part, nitrogen phosphorus system expanding fire retardant 10-15 parts, polyether-ether-ketone 5-10 parts, silicate 3-10 parts；
CPE is that the high polymer material molecular weight as made from high density HDPE through chlorination substitution reaction is 100-500 ten thousand, particle diameter
20-50 mesh.
3. screen pipe is burnt in one-shot forming modeling according to claim 1, it is characterised in that screen pipe composition is matched somebody with somebody by mass fraction
Than as follows：
28 parts of ultra-high molecular weight polyethylene, 25 parts of glass microballoon, 40 parts of shell activated carbon, 15 parts of PSP powders, PTFE powders 60
Part, 20 parts of ceramic powder, 36 parts of PVDF vinylidene chlorides powder, 15 parts of nitrogen phosphorus system expanding fire retardant, 8 parts of polyether-ether-ketone, silicate 5
Part.
4. the processing mold of screen pipe is burnt in one-shot forming modeling according to claim 1, it is characterised in that
Mould includes mold, lower mould and multiple core-pulling dies, and the corresponding surface of mold and lower mould is semicircle inner groovy；
Upper and lower mould is fastenedly connected by multiple bolts one；Core-pulling die is cylinder；
Each core-pulling die one end has more than two through holes, and core-pulling die is consolidated by the bolt two through through hole with core
Fixed board is fastenedly connected, and multiple core-pulling dies are arranged in a row or a few rows by core mold fixing plate；Then core mold fixing plate passes through bolt three
It is fastenedly connected with upper and lower mould end face；
Each core-pulling die the other end has positioning hole, and the locating shaft of core location-plate is fixed by positioning hole and core-pulling die
Connection, core location-plate bolt is affixed after being positioned with upper and lower mould, core-pulling die is hung between mold, lower mould,
Form cylindric charging space；Core location-plate is provided with multiple semicircle material filling mouths, the material filling mouth and cylindric charging space
Corresponding arrangement；Sealed after the positioning of core location-plate with feed inlet shrouding；
The semi-cylindrical hill of feed inlet shrouding and semicircle material filling mouth are corresponding affixed；
Core-pulling die can also be square, and corresponding upper and lower mould is also square inner groovy.
5. the processing mold of screen pipe is burnt in one-shot forming modeling according to claim 4, it is characterised in that
Mold, lower mold materials are as follows, are by mass percentage：
C 0.37%, Mn 1.1%, Cr 2.0%, Ni 0.5%, Mo 0.4%, S<0.006%, surplus is Fe；
Core-pulling die material is as follows, is by mass percentage：
C 0.38%, Mn 0.4%, Si1.0%, Cr5.0%, Mo1.3%, V1.0%, surplus are Fe；
Stiffened processing：The temperature requirement used to enable mould to reach, implement the stiffened side of quenching plus lonneal to material
Formula is realized；2-4 hours first are preheated at 500 DEG C -600 DEG C during quenching, then in 850 DEG C of -880 DEG C of held for some time, are put into
50 DEG C of -100 DEG C of fuel-displaced air coolings are cooled in oil, quenching hardness is up to 50-52HRC, to prevent cracking from carrying out 200 DEG C of low temperature immediately
Temper, temper number is up to 48HRC.
6. the processing mold of screen pipe is burnt in one-shot forming modeling according to claim 4, it is characterised in that
The processing technology of mold, lower mould：
1. blanking：100mmX660mmX1620. upper and lower moulds each one, totally 2；
2. roughing：Appearance and size is machined to 90mmX650mmX1610mm；
3. remove material internal stress：Vibration removes 2 hours, and timeliness removed the time as one week；
4. half roughing：
1. appearance and size is processed into 84mmX640mmX1600mm；
2. mould back side angle hollow out at 45 °, size 100mmX100mm, deep 15mm grid, grid spacing 15mm；
3. the shrinkage ratio 2.1% that dies cavity size is burnt cylinder material by product size plus modeling is processed, allowance 2mm；
5. remove material internal stress：Vibration removes 2 hours, and timeliness removed the time as one week；
6. finishing：The shrinkage ratio 2.1% that dies cavity size is burnt cylinder material by product size plus modeling is processed, allowance 1mm；
7. finishing impression：The shrinkage ratio 2.1% that dies cavity size is burnt cylinder material by product size plus modeling is processed, allowance 0.1-
0.2mm；
8. drilling, tapping；
9. stiffened is handled, hardness 45HRC；
10. grinding, is polished to and is sized, surface roughness is in more than Ra0.4.
7. the processing mold of screen pipe is burnt in one-shot forming modeling according to claim 4, it is characterised in that
The processing technology of core-pulling die：
1. blanking：φ 60mmX1620mm, totally 8；
2. roughing：Appearance and size is machined to φ 55mmX1600mm；
3. remove material internal stress：Vibration removes 2 hours, and hanging timeliness removed the time as one week；
4. half roughing：The shrinkage ratio 2.1% that size is burnt cylinder material by product size plus modeling is processed, allowance 2mm；
5. remove material internal stress：Vibration removes 2 hours, and hanging timeliness removed the time as one week；
6. finishing：The shrinkage ratio 2.1% that size is burnt cylinder material by product size plus modeling is processed, allowance 1mm；
7. finishing impression：The shrinkage ratio 2.1% that size is burnt cylinder material by product size plus modeling is processed, allowance 0.1-0.2mm；
8. grinding, is polished to size, surface roughness is in more than Ra0.4；
9. adherent layer is scribbled outside mould；
Core mold fixing plate processing technology：
1. require to coordinate closely with core pulling template；
2. coordinating with upper/lower die to get well, keeping core pulling template, gap is unanimously 3.6mm- up and down in die main body
3.7mm；
Core positions board machining process：
It is required that being worked good with die main body and core-pulling die, keeping core-pulling die, gap is unanimously up and down in upper/lower die
3.6mm-3.7mm；
The requirement of mould feed inlet shrouding is worked good with upper/lower die, is not more than 1.2mm with core-pulling die termination distance.
8. the processing mold of screen pipe is burnt in one-shot forming modeling according to claim 4, it is characterised in that
The sintering process of cylinder is burnt in mould application method and modeling:
1st, by make mould burn cylinder composition by mass fraction mix as follows, 30 parts of ultra-high molecular weight polyethylene, 25 parts of glass microballoon,
35 parts of shell activated carbon, 15 parts of PPS powders, 65 parts of PTFE powders, 15 parts of ceramic powder, 36 parts of PVDF vinylidene chlorides powder, nitrogen phosphorus
It is 15 parts of expanding fire retardant, 5 parts of polyether-ether-ketone, 3 parts of silicate；Above-mentioned raw materials are placed in three-dimensional powder mixer, are mixed
15-20min, it is standby to eventually form well mixed powder；
Mould assembling process：
1. releasing agent after must not having any dust, impurity, residue, is uniformly applied to mould by mould wiped clean with flannelette
Have in the zigzag inner chamber of main body upper and lower mould and on each surface of fuse, it is desirable to smear uniform exhaustive, coating layer thickness is
0.1mm；
2. upper and lower dies cavity semi-circular grooves are corresponded into error to be fixed with bolt no more than 0.1mm assemblings；
3. gap is consistent as 3.6mm-3.7mm up and down in upper and lower die main body by core-pulling die, core is then used
Fixed plate and the positioning of core location-plate are fixed, and feed inlet shrouding does not assemble；Ensure that each bolt is tightened, it is seamless between each part
Gap；
It is placed on 4. the mould after matched moulds is erect on shaking platform, feed inlet is upward, opens shaking platform, makes mould with vibration
Platform Vibration, and mixed powder is homogeneously added at mould feed inlet, powder volume is precalculated, treats powder
After being all added in mould, that is, after filling it up with mixed powder, shaking platform is closed, feed inlet shrouding is covered and tightens screw；
5. the mould for filling mixed powder is put into electrical heating sintering furnace and carries out heat temperature raising, be raised to 180 DEG C of set temperature value-
After 220 DEG C, this temperature 100min is kept, electrical heating sintering furnace is stopped；
6. mould is taken out from stove, cold water spray 10-15min is carried out, mold surface temperature is down to 50 DEG C -60 DEG C, then
On core pulling platform, by the pulling force of setting value, taken out by the core-pulling die of tube bundle extracting machine handle, then upper and lower mould is molded and taken out
Cylinder is burnt in one-time formed primary modeling, and sintering is completed.
7. after modeling is burnt into one-shot forming screen pipe surface spraying painting fluorine liquid, it is sent in electrical heating annealing furnace, is made annealing treatment.Reach
To after desired temperature, taken out from stove, pair secondly face both ends are repaired, and on the operational platform, carry out length cutting；Add
Upper both ends end cap, is made filtering monolithic.
9. the processing mold of screen pipe is burnt in one-shot forming modeling according to claim 4, it is characterised in that
Core pulling process is as follows：
The mould after matched moulds is fixed by bearing pin on core pulling platform, tube bundle extracting machine is fixed in the other end, and tube bundle extracting machine is drawn including core pulling
Plate and hydraulic cylinder；Core pulling arm-tie is bolted on core mold fixing plate both ends, core pulling arm-tie is fixedly connected with hydraulic cylinder, liquid
Cylinder pressure presses the pulling force of setting value, slowly pulls out core-pulling die from upper/lower die under the driving of hydraulic electric motor.
10. screen pipe is burnt in one-shot forming modeling according to claim 1, it is characterised in that
The performance parameter of screen pipe, porosity 0.5~1 μm of aperture, reach up to 36% to less than 2 μm of dust filtration efficiency
More than 99.995%；0.1 μm of filtering accuracy, running resistance≤950Pa, service life >=8 year, due to improving sintering skill and changing
Composition of raw materials is entered, ensure that the micropore in screen pipe substrate body is more uniform, heat-resisting quantity is stronger, and gas permeability is more preferable, conventional
The filter area of the screen pipe of model can be up to 9 ㎡, and the filter area in same volume is 2-3 times of filter bag, it is superpower from
Deashing ability, it is ensured that filter pressure loss is small, and stably.With higher intensity and toughness, it is amenable to thousands of daily times
Gases at high pressure repeated stock.Excellent mechanical performance, superpower high temperature resistant, acidproof alkali ability are perfect from ash-removal effect,
After normal service life is reached, by carrying out the regeneration of coating to the surface of abrasion, same new production can be still realized
The same effect of screen pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710621969.4A CN107537244A (en) | 2017-07-27 | 2017-07-27 | Screen pipe and processing mold are burnt in one-shot forming modeling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710621969.4A CN107537244A (en) | 2017-07-27 | 2017-07-27 | Screen pipe and processing mold are burnt in one-shot forming modeling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107537244A true CN107537244A (en) | 2018-01-05 |
Family
ID=60970929
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710621969.4A Pending CN107537244A (en) | 2017-07-27 | 2017-07-27 | Screen pipe and processing mold are burnt in one-shot forming modeling |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110408102A (en) * | 2019-05-21 | 2019-11-05 | 丹东天皓净化材料有限公司 | Molding sintering makes UHMWPE micro-filtration plate and mold heats cooling means |
| CN110789144A (en) * | 2019-11-18 | 2020-02-14 | 上海超高环保科技股份有限公司 | Method for manufacturing once-formed super-long plastic sintered plate |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB835673A (en) * | 1957-09-16 | 1960-05-25 | Owens Illinois Glass Co | Improvements in or relating to the molding and finishing of hollow glass articles |
| JPH05212807A (en) * | 1992-02-04 | 1993-08-24 | Hitachi Chem Co Ltd | Manufacture of porous sintered sheet |
| JPH0824536A (en) * | 1994-07-13 | 1996-01-30 | Nittetsu Mining Co Ltd | Filter medium |
| US20050027047A1 (en) * | 2003-07-29 | 2005-02-03 | Degussa Ag | Polymer powder with phosphonate-based flame retardant, process for its production, and moldings produced from this polymer power |
| CN201329220Y (en) * | 2008-12-26 | 2009-10-21 | 江洪波 | Sintered plastic corrugated pipe filter element |
| CN203509027U (en) * | 2013-09-30 | 2014-04-02 | 中国兵器工业第五二研究所 | Loose sintering porous die for copper |
| CN204051290U (en) * | 2014-09-23 | 2014-12-31 | 上海超高工程塑料有限公司 | Adopt the ripple pipe filter that sintered plate pipe rolling technique is shaping |
| CN105820416A (en) * | 2016-04-29 | 2016-08-03 | 秦诗发 | 3D sintering anti-static flame retardant air-liquid filter plate |
| CN105860212A (en) * | 2016-04-29 | 2016-08-17 | 秦诗发 | 3D plastic-sintered antistatic flame-retardant gas-liquid filter cartridge |
| CN207591492U (en) * | 2017-07-27 | 2018-07-10 | 秦诗发 | Screen pipe and processing mold are burnt in one-pass molding modeling |
-
2017
- 2017-07-27 CN CN201710621969.4A patent/CN107537244A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB835673A (en) * | 1957-09-16 | 1960-05-25 | Owens Illinois Glass Co | Improvements in or relating to the molding and finishing of hollow glass articles |
| JPH05212807A (en) * | 1992-02-04 | 1993-08-24 | Hitachi Chem Co Ltd | Manufacture of porous sintered sheet |
| JPH0824536A (en) * | 1994-07-13 | 1996-01-30 | Nittetsu Mining Co Ltd | Filter medium |
| US20050027047A1 (en) * | 2003-07-29 | 2005-02-03 | Degussa Ag | Polymer powder with phosphonate-based flame retardant, process for its production, and moldings produced from this polymer power |
| CN201329220Y (en) * | 2008-12-26 | 2009-10-21 | 江洪波 | Sintered plastic corrugated pipe filter element |
| CN203509027U (en) * | 2013-09-30 | 2014-04-02 | 中国兵器工业第五二研究所 | Loose sintering porous die for copper |
| CN204051290U (en) * | 2014-09-23 | 2014-12-31 | 上海超高工程塑料有限公司 | Adopt the ripple pipe filter that sintered plate pipe rolling technique is shaping |
| CN105820416A (en) * | 2016-04-29 | 2016-08-03 | 秦诗发 | 3D sintering anti-static flame retardant air-liquid filter plate |
| CN105860212A (en) * | 2016-04-29 | 2016-08-17 | 秦诗发 | 3D plastic-sintered antistatic flame-retardant gas-liquid filter cartridge |
| CN207591492U (en) * | 2017-07-27 | 2018-07-10 | 秦诗发 | Screen pipe and processing mold are burnt in one-pass molding modeling |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110408102A (en) * | 2019-05-21 | 2019-11-05 | 丹东天皓净化材料有限公司 | Molding sintering makes UHMWPE micro-filtration plate and mold heats cooling means |
| CN110789144A (en) * | 2019-11-18 | 2020-02-14 | 上海超高环保科技股份有限公司 | Method for manufacturing once-formed super-long plastic sintered plate |
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Application publication date: 20180105 |