CN109465597A - A kind of blade dryer axle fracture renovation technique - Google Patents
A kind of blade dryer axle fracture renovation technique Download PDFInfo
- Publication number
- CN109465597A CN109465597A CN201910010828.8A CN201910010828A CN109465597A CN 109465597 A CN109465597 A CN 109465597A CN 201910010828 A CN201910010828 A CN 201910010828A CN 109465597 A CN109465597 A CN 109465597A
- Authority
- CN
- China
- Prior art keywords
- blade
- welding
- stainless steel
- blade dryer
- drying machine
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- 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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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
- B23P6/00—Restoring or reconditioning objects
- B23P6/04—Repairing fractures or cracked metal parts or products, e.g. castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3053—Fe as the principal constituent
- B23K35/308—Fe as the principal constituent with Cr as next major constituent
- B23K35/3086—Fe as the principal constituent with Cr as next major constituent containing Ni or Mn
Abstract
The present invention relates to drying machine field, specially a kind of blade dryer axle fracture renovation technique solves the problems such as drying machine replacement cycle is long, the reparation duration is nervous, can be in short quick reparation drying machine axle fracture problem.The present invention is using the intermediate recovery technique for reinforcing axle sleeve cold charge, for repairing blade dryer.In addition, selecting the two phase stainless steel welding wire of the close trade mark as increasing material manufacturing material according to 2205 two phase stainless steel of drying machine shaft material and material paratoluensulfonyl chloride.It is easy operation using the present invention, repairing efficiency is short, and binding force is more preferable.
Description
Technical field
The present invention relates to drying machine field, specially a kind of blade dryer axle fracture renovation technique.
Background technique
Drying machine is widely used in the fields such as food, petrochemical industry, dyestuff, industrial sludge, and it is tight to be considered as the dry arbor reparation duration
, axis severe crack is a set of to change that the period is long entirely, so the mode that selection is repaired reaches save the cost purpose.
The main form of blade dryer axis crackle and the reason is as follows that:
(1) deposit being attached in drying machine has chemical attack to axis surface, therefore can cause steel in later period operation
The different degrees of corrosion of catalysis.
(2) long operational time, its load that overloads already exceed normal transmission shaft ability to bear, cause axis cracked
Phenomenon.
The problem of traditional handicraft increasing material manufacturing will cause is as follows: directly after cracks REPAIR WELDING, intensity is low, runs
Cheng Zhongyi is cracked again.
Summary of the invention
The purpose of the present invention is to provide a kind of blade dryer axle fracture renovation techniques, solve the drying machine replacement cycle
It the problems such as length, nervous reparation duration, can be in short quick reparation drying machine axle fracture problem.
To solve the above-mentioned problems, the invention provides the following technical scheme:
A kind of blade dryer axle fracture renovation technique, comprising the following steps:
(1) blade dryer axis material remained on surface is cleaned up, carries out dye penetrant inspection using dye penetrant inspection agent, really
Periodical repair reset is set and quantity；
(2) blade of breaking part axis and obstruction, and turning end and inner hole are cut off using tool；It is dry to make collet tooling top
Dry arbor outer circle calibrates bearing bit jitter, guarantees concentricity turning inner hole；
(3) intermediate reinforced shaft is covered and carries out liquid nitrogen cooling and cold charge interference fit, guarantee its magnitude of interference；
(4) REPAIR WELDING is carried out using gas shield welding；
(5) groove is beaten in drilling on dry arbor and intermediate reinforced shaft set, and is welded and fixed, and weld strength is increased；By paddle
Leaf is welded on again on dry arbor, restores original size；
(6) welding slag is removed, each re-entrant portion purged, and must not be remained iron and be cut and welding slag mechanical admixture, and colour spy
Triage is tested；
(7) drying machine trial operation after installing.
The blade dryer axle fracture renovation technique in step (4), it is as follows to adjust gas shield welding welding parameter: welding
80~120A of electric current, protective gas: the mixed gas of 80% argon gas and 20% carbon dioxide by volume, shield gas flow rate 5
~15L/min, gage of wire select 1.2mm.
The blade dryer axle fracture renovation technique in welding process, controls the concentricity of bearings at both ends position.
The blade dryer axle fracture renovation technique, in step (4), according to 2205 two-phase stainless of drying machine shaft material
Steel and material paratoluensulfonyl chloride select the two phase stainless steel welding wire of the close trade mark as increasing material manufacturing material；According to weight hundred
Divide than meter, two phase stainless steel welding wire chemical component is as follows: C≤0.04%, Cr 21.5~23.5%, Mn 0.5~2%, Si≤
0.9%, Mo 2.5~3.5%, Ni 8.5~10.5%, N 0.08~0.2%, Cu≤0.75%, S≤0.03%, P≤
0.04%, Fe surplus, Brinell hardness≤245HV.
The blade dryer axle fracture renovation technique, it is stainless according to blade dryer shaft material 316L in step (4)
Steel and material paratoluensulfonyl chloride select 316L stainless steel containing molybdenum stainless steel welding stick as increasing material manufacturing material.
The blade dryer axle fracture renovation technique, in step (7), after assembly, left and right cored screw blade is parallel,
And the screw pitch of blade is intersected, and is rotated freely with two screw blades in the dynamic left and right of setting stick, no wiping, which is touched, bites phenomenon；All install
Afterwards, idle running is carried out, test period is not less than 4 hours, and idle time is not less than 4 hours, and unloaded start and stop are not less than 10 times, fortune
Without frictional heating during row；No part bites or loose phenomenon, carries out unloaded heat run, reaches requirement recycling.
The present invention uses the renovation technique technology of cold charge reinforcing sleeve, and for repairing dry arbor, design philosophy is as follows:
(1) the characteristics of cold charge is interference fitted
Interference fit is that a kind of common components assembling mode can generate enough under service load in mechanical industry
Frictional force, with guarantee to occur between matching piece it is opposite slide, while contact stress is not again excessive, and assembly parts can normal work
Make.
(2) intermediate to reinforce axle sleeve
Increase thickness at drying machine axle fracture, increases the intensity of axis.
The invention has the advantages and beneficial effects that:
The present invention is using the intermediate recovery technique for reinforcing axle sleeve cold charge, for repairing blade dryer.It is dry according to blade
Arbor material: 2205 two phase stainless steels and material paratoluensulfonyl chloride select two phase stainless steel as repair materials.Alternatively, root
According to blade dryer shaft material: 316L stainless steel and material paratoluensulfonyl chloride select the conduct of 316L stainless steel containing molybdenum stainless steel
Repair materials.The present invention is easy operation, and repairing efficiency is short, and binding force will more preferably, the effective intensity for increasing dry arbor.
Detailed description of the invention
Fig. 1 is schematic diagram when blade dryer axle fracture is repaired in the present invention.In figure, 1 drive end bearing position；2 drivings
Hold main shaft；3 collet toolings；Reinforce axle sleeve among 4；5 blades；6 anti-drive end main shafts；7 non-driven-end bearing positions.
Specific embodiment
In the specific implementation process, as shown in Figure 1, blade dryer axle fracture renovation technique of the present invention, including following step
It is rapid:
(1) blade dryer axis (such as: driving end main shaft 2, anti-drive end main shaft 6) material remained on surface is cleaned dry
Only, dye penetrant inspection is carried out using dye penetrant inspection agent, determines and repairs position and quantity.
(2) blade 5 of breaking part axis and obstruction, and turning end and inner hole are cut off using tool.Collet tooling 3 is made to push up
Arbor (such as: driving end main shaft 2, anti-drive end main shaft 6) outer circle is firmly dried, calibration bearing position is (such as: drive end bearing position 1, non-drive
Moved end bearing position 7) bounce, guarantee concentricity turning inner hole；
(3) by centre reinforce axle sleeve 4 carry out liquid nitrogen cooling, and it is cold be plugged in dry arbor (such as: driving end main shaft 2, non-drive
Moved end main shaft 6) end inner hole interference fit, guarantee its magnitude of interference；
(4) carry out REPAIR WELDING using gas shield welding, it is as follows to adjust gas shield welding welding parameter: 80~120A of welding current is protected
Protect gas: the mixed gas of 80% argon gas and 20% carbon dioxide by volume, 5~15L/min of shield gas flow rate, welding wire are straight
Diameter selects 1.2mm, in welding process, strict control bearings at both ends position (drive end bearing position 1, non-driven-end bearing position 7)
Concentricity.
(5) slope is beaten with drilling on intermediate reinforcement axle sleeve 4 in dry arbor (such as: driving end main shaft 2, anti-drive end main shaft 6)
Mouthful, pin connection is carried out by reinforcing corresponding drilling on axle sleeve 4 among dry arbor, and by being welded and fixed, increase welding
Intensity.Blade 5 is welded on again on dry arbor (such as: driving end main shaft 2, anti-drive end main shaft 6), original size is restored.
(6) welding slag is removed, each re-entrant portion should all be purged, and it must not remain iron and cut and the mechanical admixtures such as welding slag, and
Color flaw detection.
(7) drying machine trial operation after installing.After assembly, left and right cored screw blade 5 must be parallel, and the screw pitch of blade 5
Intersect, is rotated freely with two screw blades 5 in the dynamic left and right of setting stick, no wiping, which is touched, bites phenomenon.After all installing, unloaded fortune is carried out
Row, test period are not less than 4 hours, and idle time is not less than 4 hours, and unloaded start and stop are not less than 10 times, and nothing is rubbed in operational process
Wipe fever.No part bites or loose phenomenon, should carry out unloaded heat run, and reaching requesting party can feed.
Hereinafter, preferred embodiments of the present invention will be described, it should be understood that preferred embodiment described herein is only used
In the description and interpretation present invention, it is not intended to limit the present invention.
Embodiment 1
It is broken in certain chemical plant blade dryer axis During Process of Long-term Operation, causes drying machine out of service.Drying machine
Shaft material is 316L stainless steel, and fracture position is among dry arbor and blade.The medium material of dry arbor contact is to first
Benzene sulfonyl chloride, white crystals sprills are not soluble in water, are corrosive and irritation, welding are preceding clear using the progress of warm water alkaline water
It washes.
According to drying machine shaft material 316L stainless steel and material paratoluensulfonyl chloride, the 316L of the close trade mark is selected to contain molybdenum not
Become rusty steel, and by weight percentage, chemical component is as follows: C 0.02%, Si 0.97%, Mn 1.88%, P 0.034%, S
0.018%, Ni 12.9%, Cr 17.8%, Mo 2.2%, Fe surplus, as increasing material manufacturing material.
Reinforce axle sleeve technique among breaking part increase, welded by gas shield welding, is welded and fixed to position is repaired.Weldering
Electric current 90A is met, protective gas: the mixed gas of 80% argon gas and 20% carbon dioxide by volume, shield gas flow rate 8L/
Min, gage of wire selects 1.2mm, and in welding process, the concentricity of strict control bearings at both ends position guarantees bearings at both ends position
Set bounce.
After REPAIR WELDING, the blade dryer axis of flawless, stomata after dye penetrant inspection, above-mentioned technique reparation exists
Military service using effect is good.
Embodiment 2
There is slight crack in the process of running in certain chemical plant blade dryer axis, and drying machine shaft material is 2205 two-phase stainless
Steel causes blade on dry arbor to scratch cabinet, brings security risk to production.The medium material of dry arbor contact is to first
Benzene sulfonyl chloride, white crystals sprills are not soluble in water, are corrosive and irritation, welding are preceding clear using the progress of warm water alkaline water
It washes.
According to 2205 two phase stainless steel of drying machine shaft material and material paratoluensulfonyl chloride, the two-phase of the close trade mark is selected not
Steel welding wire become rusty as increasing material manufacturing material, by weight percentage, chemical component is as follows: C 0.026%, Cr 22.7%, Mn
1.23%, Si 0.52%, Mo 3.18%, Ni 9.71%, N 0.15%, Cu 0.26%, S 0.012%, P 0.024%,
Fe surplus, Brinell hardness 217HV.
Breaking part then cuts off cracks blade on blade, carries out interior hole and increases intermediate reinforcement axle sleeve, and is protected using gas
Weldering is welded and fixed.Welding current 100A, protective gas: the mixed gas of 80% argon gas and 20% carbon dioxide by volume is protected
Gas flow 12L/min is protected, gage of wire selects 1.2mm, in welding process, the concentricity of strict control bearings at both ends position,
Guarantee the bounce of bearings at both ends position.
After REPAIR WELDING, the blade dryer axis of flawless, stomata after dye penetrant inspection, above-mentioned technique reparation exists
Military service using effect is good.
Embodiment the result shows that, the present invention is repaired using blade dryer axle fracture, and repairing efficiency is short, and binding force will be more
It is good.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not limited to invent, to the greatest extent
The present invention will be described in detail with reference to the foregoing embodiments for pipe, for those skilled in the art, still can be right
Technical solution documented by foregoing embodiments is modified or equivalent replacement of some of the technical features.It is all
Within the spirit and principles in the present invention, made any modification or equivalent replacement of some of the technical features should all
It is included within protection scope of the present invention.
Claims (6)
1. a kind of blade dryer axle fracture renovation technique, which comprises the following steps:
(1) blade dryer axis material remained on surface is cleaned up, carries out dye penetrant inspection using dye penetrant inspection agent, determination is repaired
Reset is set and quantity；
(2) blade of breaking part axis and obstruction, and turning end and inner hole are cut off using tool；Make collet tooling top drying machine
Axis outer circle calibrates bearing bit jitter, guarantees concentricity turning inner hole；
(3) intermediate reinforced shaft is covered and carries out liquid nitrogen cooling and cold charge interference fit, guarantee its magnitude of interference；
(4) REPAIR WELDING is carried out using gas shield welding；
(5) groove is beaten in drilling on dry arbor and intermediate reinforced shaft set, and is welded and fixed, and weld strength is increased；By blade weight
It is newly welded on dry arbor, restores original size；
(6) welding slag is removed, each re-entrant portion purged, and must not be remained iron and be cut and welding slag mechanical admixture, and dye penetrant inspection is examined
It tests；
(7) drying machine trial operation after installing.
2. blade dryer axle fracture renovation technique described in accordance with the claim 1, which is characterized in that in step (4), adjust gas
It is as follows to protect weldering welding parameter: 80~120A of welding current, protective gas: 80% argon gas and 20% carbon dioxide is mixed by volume
Gas, 5~15L/min of shield gas flow rate are closed, gage of wire selects 1.2mm.
3. blade dryer axle fracture renovation technique according to claim 2, which is characterized in that in welding process, control
The concentricity of bearings at both ends position.
4. blade dryer axle fracture renovation technique described in accordance with the claim 1, which is characterized in that in step (4), according to dry
Dry 2205 two phase stainless steel of arbor material and material paratoluensulfonyl chloride select the two phase stainless steel welding wire of the close trade mark as increasing
Material manufacture material；In percentage by weight, two phase stainless steel welding wire chemical component is as follows: C≤0.04%, Cr 21.5~
23.5%, Mn 0.5~2%, Si≤0.9%, Mo 2.5~3.5%, Ni 8.5~10.5%, N 0.08~0.2%, Cu≤
0.75%, S≤0.03%, P≤0.04%, Fe surplus, Brinell hardness≤245HV.
5. blade dryer axle fracture renovation technique described in accordance with the claim 1, which is characterized in that in step (4), according to paddle
Leaf drying machine shaft material 316L stainless steel and material paratoluensulfonyl chloride select 316L stainless steel containing molybdenum stainless steel welding stick as increasing
Material manufacture material.
6. blade dryer axle fracture renovation technique described in accordance with the claim 1, which is characterized in that in step (7), assembly
Afterwards, cored screw blade in left and right is parallel, and the screw pitch of blade is intersected, and is rotated freely with two screw blades in the dynamic left and right of setting stick, nothing
Wiping, which is touched, bites phenomenon；After all installing, idle running is carried out, test period is not less than 4 hours, and idle time is small not less than 4
When, unloaded start and stop are not less than 10 times, without frictional heating in operational process；No part bites or loose phenomenon, carries out unloaded heating
Test, reaches requirement recycling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910010828.8A CN109465597A (en) | 2019-01-07 | 2019-01-07 | A kind of blade dryer axle fracture renovation technique |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910010828.8A CN109465597A (en) | 2019-01-07 | 2019-01-07 | A kind of blade dryer axle fracture renovation technique |
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| CN109465597A true CN109465597A (en) | 2019-03-15 |
Family
ID=65677182
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| CN201910010828.8A Pending CN109465597A (en) | 2019-01-07 | 2019-01-07 | A kind of blade dryer axle fracture renovation technique |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110883495A (en) * | 2019-11-21 | 2020-03-17 | 浙江翰德圣智能再制造技术有限公司 | Online repair process for rotary valve rotor sealing surface |
| CN112894260A (en) * | 2021-01-22 | 2021-06-04 | 西部超导材料科技股份有限公司 | Hydraulic valve block crack repairing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110883495A (en) * | 2019-11-21 | 2020-03-17 | 浙江翰德圣智能再制造技术有限公司 | Online repair process for rotary valve rotor sealing surface |
| CN112894260A (en) * | 2021-01-22 | 2021-06-04 | 西部超导材料科技股份有限公司 | Hydraulic valve block crack repairing method |
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Application publication date: 20190315 |