CN108842127A - Hot roll supersonic spray coating surface reconditioning preprocess method - Google Patents
Hot roll supersonic spray coating surface reconditioning preprocess method Download PDFInfo
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- CN108842127A CN108842127A CN201810872086.5A CN201810872086A CN108842127A CN 108842127 A CN108842127 A CN 108842127A CN 201810872086 A CN201810872086 A CN 201810872086A CN 108842127 A CN108842127 A CN 108842127A
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/129—Flame spraying
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
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- Organic Chemistry (AREA)
- Coating By Spraying Or Casting (AREA)
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Abstract
The invention discloses hot roll supersonic spray coating surface reconditioning preprocess method, specific process is：1) undercut is handled；2) removing surface；3) plate shape is opened on surface；4) roughing in surface, wherein roughing in surface specifically includes following steps：Approximate perpendicular ribs are made in (1) sandblasting, and roughness controls between Ra2.5-Ra3.2；(2) roll is stopped rotating, two templates is fixed on the roller surface of a sandblasting, sand-blasting gun carries out sandblasting along the gap between screw between two templates, and roughness control is in Ra5.5 between Ra6.5；(3) two templates are turned over and is fixed on the roller surface of secondary sandblasting, sand-blasting gun carries out sandblasting along the gap between screw between two templates, and roughness control is in Ra5.5 between Ra6.5；(4) hot roll preheats.The method of the present invention can obtain bond strength height, the supersonic spray coating layer of superpower wear-resistant reduces production cost to extend the service life of roll.
Description
Technical field
The invention belongs to material surface strengthening technical fields more particularly to hot roll supersonic spray coating surface reconditioning to pre-process
Method.
Background technique
The roll of hot rolled plate is the important component of milling train, plays key effect to the quality of rolled piece.Roll makes daily
With in the process, roll surface contacts for a long time with rolled piece, rubs, and roll surface is easily worn, and needs to carry out repair process to it.Roll exists
Before spraying, need to carry out it surface preparation, specific process is：1) undercut is handled：There are fatigue layer and part are tight on surface
When the groove mark pulled again, turning processing can be carried out under the premise of intensity allows, provides the space of receiving for thermal spraying；2) table
Face cleaning：Workpiece surface greasy dirt, iron rust, paint layer etc. are removed, keeps workpiece surface clean, greasy dirt paint can be removed with solvent cleaner
It goes, if grease stain has penetrated into basis material, can be heated and be removed with flame, acidleach, mechanical grinding or spray can be carried out to rusty scale
Sand removes；3) plate shape is opened on surface：It is ground out the plate shape of plate rolling needs；4) it is surface-treated：Hot roll surface sand-blasting process；5)
Surface preheating：The hot rolling roller surface that will be sprayed is preheated.Supersonic spray coating is carried out again after pretreatment, thus complete
At the reparation of roll surface.In this way, the hot roll of repaired mistake can online operation again, but due to the table of spray coating
Face bond strength and wearability are not enough, it is again online after can only 15-18 hours roll surface parts of operation just again can by plucking,
Cause product unqualified, it is necessary to offline to repair again.
Summary of the invention
The problem to be solved by the invention is to provide a kind of hot roll supersonic spray coating surface reconditioning preprocess method, energy
Access bond strength height, the supersonic spray coating layer of superpower wear-resistant reduces production to extend the service life of roll
Cost.
Hot roll supersonic spray coating surface reconditioning preprocess method of the present invention, specific process are：1) undercut is handled；2) surface
Cleaning；3) plate shape is opened on surface；4) roughing in surface, wherein roughing in surface specifically includes following steps：
Approximate perpendicular ribs are made in (1) sandblasting
Hot roll to be sprayed is made into its rotation on sandblasting bed, needs to spray position with sand-blasting gun alignment roll and carries out
Sandblasting forms the approximation around roll circumference surface and erects ribs, and the perpendicular ribs of approximation are at equidistantly distributed, roughness control
System is between Ra2.5-Ra3.2；
(2) secondary sandblasting
Roll is stopped rotating, two templates are fixed on the roller surface of a sandblasting, and makes two templates
Right side and roll need to spray that the right side of position section is concordant, and manual rotation's roll, sand-blasting gun is along between two templates
Gap between screw carry out sandblasting, roughness control in Ra5.5 between Ra6.5；It is total to sandblasting n times, n=roll according to the method described above
Need to spray the number of segment of the circumference equal dividing at position；
(3) sandblasting three times
Two templates are turned over and are fixed on the roller surface of secondary sandblasting, and make the left sides of two templates with
The left side that roll needs to spray position section is concordant, and manual rotation's roll, sand-blasting gun is along the gap between screw between two templates
Sandblasting is carried out, roughness control is in Ra5.5 between Ra6.5；It is total to sandblasting n times according to the method described above, n=roll needs to spray portion
The number of segment of the circumference equal dividing of position；
(4) hot roll preheats
The fresh surface presented after roughing in surface, it should prevent from polluting, forbid to be touched with hand, roll to be sprayed is placed in and is added
It is preheated 1 hour for 180-200 DEG C of temperature of control in heat cover.
Further, in step (1), roll is rotated with the speed of 25-30r.p.m, and sand-blasting gun is along axial direction with 100mm.p.m
Speed walk from surface one end to be sprayed to the other end or so.
Further, the template selects flexible material, and shape makes according to correlation technique, and template is fixed on roll
Surface.
Further, described two templates are the identical parallelogram of geomery, and production method is：1. determining phase
Close parameter：Determine α, n, c；α=arctg b/a, α are the complementary angle of long side and short side angle, and as (a is to need to spray to helical angle
The length of the roll of section, b is surface perimeter=π d for needing to spray the roll of section), n=needs to spray the roll circumference equal part of section
Number of segment, c be a sandblasting width, that is, gap between screw width；2. blanking：Lower parallelogram plate, long side L1 2=a2
+b2, short side L2=b ÷ n-c ÷ cos α.
Further, step (2) secondary sandblasting comprises the concrete steps that：1. first in the both ends of the surface of the roll of a sandblasting
It marks the point of circumference n equal part, is 2. aligned the right side of first template and the upper right A point of template with the right side of roll surface
3. the right side of second template is aligned and the upper right A of template by an Along ent being aligned on circumference with the right side of roll surface
Point alignment is aligned the Along ent of Along ent close to first template, and the spiral that width is c is formed between two such template
4. gap carries out sandblasting to gap between screw with sand-blasting gun, 5. remove first template, step is repeated 3., 4., until having sprayed n
Gap between screw；Step (3) is as the specific blasting method of step (2).
Further, the sequence of step (2) and step (3) can be interchanged, the gap between screw in step (2) and step (3)
It is oppositely oriented, one to be left-handed, another is dextrorotation.
Further, it as to be sprayed section of hot roll of length a=2000mm, width b=2669mm (d=850), will roll
Roller circumference equal dividing is at 8 sections, long side L in template1=3335mm, short side L2=250.545mm, helical angle, that is, long side and short side angle
Complementary angle α=53 °, the width of gap between screw is 50mm, after carrying out sandblasting, obtains left-handed and dextrorotation each 8 helixes, is formed
Argyle design.
Further, the sand material of the step (1) is middle emergy.
Further, the sand material in the step (2) and (3) selects alloy particle, and the microhardness of alloy particle is greater than
HV350,10-50 microns of particle size range.
Further, the sand material alloy particle in the step (2) and (3) is evanohm, tungsten alloy, ferroalloy, tantalum conjunction
One or more of mixture in gold, amorphous alloy.
Compared with prior art, the present invention in supersonic spray coating technique 4) done completely new design in roughing in surface：First
On the roller surface for the plate shape that the plate rolling being ground out needs, direct sandblasting forms approximate perpendicular ribs, roughness control
System is in Ra2.5-Ra3.2, and then sandblasting goes out several left helixes and several right-hand helixes on this floral designs, i.e., in approximation
Sandblasting argyle design, roughness are controlled in Ra5.5-Ra6.5 again on vertical bar shape floral designs.Several pattern knots in the present invention
It being combined to form honeycomb architecture, after such supersonic spray coating gets on, the bond strength of coating and matrix is greatly enhanced,
Stronger anti-wear effect can be reached.Therefore, the present invention solves the problems, such as that the roller surface repaired now is not wear-resisting, can obtain
Bond strength is high, superpower wear-resistant supersonic spray coating layer reduces production cost to extend the service life of roll.
The present invention carries out a sandblasting on the surface that roll is entirely preliminarily sprayed, and then carries out argyle design on this basis
Sandblasting, so the surface hardness that roll is entirely preliminarily sprayed is uniform；And technology sandblasting now does not form decorative pattern skeleton and cannot make to spray
Coating has enough wear-resistant strengths, does not wear to will lead to part part easy to wear and certain, but entire roll really needs
Again the situation repaired, to waste time and materials significantly.Meanwhile the outermost argyle design of the present invention is being rolled
When impact force, impact force can disperse around along the side of diamond shape, to alleviate impact force, extend the whole of roll and use
Service life.
Detailed description of the invention
Fig. 1 is the flow chart of hot roll supersonic spray coating surface reconditioning preprocess method of the present invention；
Fig. 2 is the schematic diagram of hot roll of the present invention；
Fig. 3 is the expanded view of the perpendicular ribs of approximation after sandblasting of roll surface of the present invention；
Fig. 4 be roll surface of the present invention three times after sandblasting pattern expanded view；
Fig. 5 is expanded schematic diagram of two templates on roll in the present invention；
Fig. 6 be the secondary sandblasting of the present invention or three times sandblasting when the schematic diagram put of template (from roll end face direction).
Specific embodiment
The present invention is done below with reference to embodiment and is further described in detail.
Embodiment 1
As shown in Figure 1, Figure 2, Figure 3, Figure 4, hot roll supersonic spray coating surface reconditioning preprocess method of the present invention, specific work
Sequence is：1) undercut is handled：It, can be under the premise of intensity allows when the groove mark that surface is seriously pulled there are fatigue layer and part
Processing is cut in driving, provides the space of receiving for thermal spraying；2) removing surface：Workpiece surface greasy dirt, iron rust, paint layer etc. are removed, is made
Workpiece surface is clean, and greasy dirt paint can be removed with solvent cleaner, if grease stain has penetrated into basis material, can be added with flame
Heat removes, and can carry out acidleach, mechanical grinding or sandblasting to rusty scale and remove；3) plate shape is opened on surface；4) roughing in surface, wherein surface
Roughening specifically includes following steps：
Approximate perpendicular ribs are made in (1) sandblasting
Hot roll to be sprayed is made into its rotation on sandblasting bed, needs to spray position with sand-blasting gun alignment roll and carries out
Sandblasting forms the approximation around roll circumference surface and erects ribs, and the perpendicular ribs of approximation are at equidistantly distributed, roughness control
System is between Ra2.5-Ra3.2；
(2) secondary sandblasting
Roll is stopped rotating, two templates are fixed on the roller surface of a sandblasting, and makes two templates
Right side and roll need to spray that the right side of position section is concordant, and manual rotation's roll, sand-blasting gun is along between two templates
Gap between screw carry out sandblasting, roughness control in Ra5.5 between Ra6.5；It is total to sandblasting n times, n=roll according to the method described above
Need to spray the number of segment of the circumference equal dividing at position；
(3) sandblasting three times
Two templates are turned over and are fixed on the roller surface of secondary sandblasting, and make the left sides of two templates with
The left side that roll needs to spray position section is concordant, and manual rotation's roll, sand-blasting gun is along the gap between screw between two templates
Sandblasting is carried out, roughness control is in Ra5.5 between Ra6.5；It is total to sandblasting n times according to the method described above, n=roll needs to spray portion
The number of segment of the circumference equal dividing of position；
(4) hot roll preheats
The fresh surface presented after roughing in surface, it should prevent from polluting, forbid to be touched with hand, roll to be sprayed is placed in and is added
It is preheated 1 hour for 180-200 DEG C of temperature of control in heat cover.
Preprocess method of the invention is：First in 10 surface of hot roll, 20 (length a, diameter d) spray to be treated
Sand forms approximate perpendicular ribs 30, and then secondary sandblasting goes out several spiral patterns 41, then three sandblastings go out several spirals
Pattern 42 forms honeycomb architecture to obtain pattern as shown in Figure 4.Such honeycomb architecture makes
Spray coating and roller substrate excellent bonding performance, bond strength greatly increases, while the wear-resisting property of spray coating is greatly improved.
Embodiment 2
In step (1), preferred speed is：Roll is rotated with the speed of 25-30r.p.m, sand-blasting gun along axial direction with
The speed of 100mm.p.m is walked from surface one end to be sprayed to the other end or so.
Speed in step (1) can be adjusted, to obtain approximate perpendicular ribs.
Embodiment 3
The template selects flexible material, and shape makes according to correlation technique, and template is fixed on roller surface.
Embodiment 4
As shown in figure 5, described two templates are the identical parallelogram of geomery, production method is：1. determining
Relevant parameter：Determine α, n, c；α=arctg b/a, α are the complementary angle of long side and short side angle, and as (a is to need to spray to helical angle
The length of the roll of section is applied, b is surface perimeter=π d for needing to spray the roll of section), n=needs to spray the roll circumference etc. of section
The number of segment divided, c are width, that is, gap between screw width of a sandblasting；2. blanking：Lower parallelogram plate, long side L1 2=
a2+b2, short side L2=b ÷ n-c ÷ cos α.
In this way, being equivalent to when template is fixed in hot rolling roller surface in one spiral shape sample of hot roll surface wrap
Plate, then foring a spiral gap between two templates, angle [alpha] is helical angle.When the screw thread on template is a left side
When revolving screw thread, the left side that when sandblasting makes the left side of template need to spray position section with roll is concordant；When the screw thread on template
When for right-handed thread, the right side that when sandblasting makes the right side of template need to spray position section with roll is concordant.
Wherein, the preferred 8-12 of the specific value of n, as d > 800mm, at least 8；That is sandblasting forms spiral
The distance between line cannot be too big, otherwise bond strength will receive influence；Generally, the distance between helix L2*cos α
Approximately equal to 3c.
Embodiment 5
Step (2) secondary sandblasting comprises the concrete steps that：1. first being marked in the both ends of the surface of the roll of a sandblasting by circle
2. the right side of first template is aligned and the upper right A point alignment circumference of template by the point of all n equal parts with the right side of roll surface
On an Along ent, the right side of second template is aligned with the right side of roll surface 3. and the upper right A point alignment of template is tight
Adjacent first template is aligned the Along ent of Along ent, and the gap between screw that width is c is formed between two such template, is 4. used
Sand-blasting gun carries out sandblasting to gap between screw, 5. removes first template, step is repeated 3., 4., between having sprayed n spiral
Gap；Step (3) is as the specific blasting method of step (2).As shown in Figure 5, Figure 6, wherein 50 be template.
Wherein, the sequence of step (2) and step (3) can be interchanged, the rotation of step (2) and the gap between screw in step (3)
To on the contrary, one to be left-handed, another is dextrorotation.
After secondary sandblasting and three times sandblasting, it is equivalent to the sandblasting on the surface of the original approximate perpendicular ribs of roller
An argyle design is gone up, to form honeycomb architecture.
Embodiment 6
Below for a specific example：
As to be sprayed section of hot roll of length a=2000mm, width b=2669mm (d=850), by roll circumference etc.
It is divided into 8 sections, long side L in template1=3335mm, short side L2The complementary angle α of=250.55mm, helical angle, that is, long side and short side angle=
53 °, the width of gap between screw is 50mm, after carrying out sandblasting, obtains left-handed and dextrorotation each 8 helixes, forms argyle design.
Embodiment 7
The sand material of the step (1) is middle emergy.
Sand material in the step (2) and (3) selects alloy particle, and the microhardness of alloy particle is greater than HV350, partial size
10-50 microns of range.
Sand material alloy particle in the step (2) and (3) is evanohm, tungsten alloy, ferroalloy, tantalum alloy, amorphous state
One or more of mixture in alloy.
Pressure appropriate is selected when sandblasting to reach the requirement of corresponding roughness.
The roll that the present invention pre-processes after completing to spray again is tested for the property, and specific data see the table below 1：
1 coating performance parameter of table
| Unit | 1# | 2# | 3# | |
| Sandblasting (perpendicular ribs) | μm | 2.6 | 3.1 | 3.1 |
| Two, sandblasting (argyle design) three times | μm | 5.6 | 6.3 | 6.3 |
| Coating layer thickness | mm | 1.00 | 1.20 | 1.20 |
| Bond strength | MPa | 58.00 | 60.00 | 61.00 |
| Surface hardness | HS | 81.50 | 85.20 | 87.10 |
The data from above-mentioned table select composite ceramic material powder it is found that when setting supersonic spray coating thickness degree greater than 1mm
Last thermal jet is greater than 58MPa in roller surface to be repaired, spray coating and roller substrate bond strength, and hardness is greater than HS81.5.
The spraying hot roll obtained after the method for the present invention carries out surface reconditioning pretreatment, at without the method for the present invention
The spraying roll of reason is under same thickness coating conditions, the time of rolled plate plate and tonnage comparison, such as table 2：
Table 2 improves rolled plate time and tonnage after preceding and improvement
| Activity duration (hour) | Roll lower steel transportation amount (ton) | |
| Without spray treatment | 3-3.5 | 1000 |
| Existing spraying technology processing | 15-18 | 4500 |
| Through spray treatment of the present invention | 20-23 | 5500 |
By data in above-mentioned table it is found that the time through the improved roll rolled plate of the present invention averagely improves 28%,
It rolls lower steel transportation amount and also improves 22%, the service life of roll is greatly extended.
Compared with prior art, the method for the present invention is to spray several right hand helixs again on the surface of approximate perpendicular ribs
Line, several left-handed twists, that is, sandblasting argyle design, formation honeycomb are basic again in approximate vertical bar shape surface profile
Framework, so that spray coating and roller substrate excellent bonding performance, bond strength is greatly increased, while making the wear-resisting property of spray coating
It greatly improves.When supersonic spray coating thickness degree is greater than 1mm, select composite ceramic material powder thermal jet in roll table to be repaired
Face, spray coating and roller substrate bond strength are greater than 58MPa, and hardness is greater than HS81.5, and relative wear resistance is substrate
5 times or more of GCr15Si2Mn steel, the service life ratio of roll do not spray roller and can be improved 5.5 times or more.
Claims (10)
1. hot roll supersonic spray coating surface reconditioning preprocess method, specific process are：1) undercut is handled；2) removing surface；3)
Open plate shape in surface；4) roughing in surface, wherein roughing in surface specifically includes following steps：
Approximate perpendicular ribs are made in (1) sandblasting
Hot roll to be sprayed is made into its rotation on sandblasting bed, needs to spray position with sand-blasting gun alignment roll and is sprayed
Sand forms the approximation around roll circumference surface and erects ribs, and the perpendicular ribs of approximation are at equidistantly distributed, roughness control
Between Ra2.5-Ra3.2；
(2) secondary sandblasting
Roll is stopped rotating, two templates are fixed on the roller surface of a sandblasting, and make the right side of two templates
End face is concordant with the right side that roll needs to spray position section, and manual rotation's roll, sand-blasting gun is along the spiral shell between two templates
It revolves gap and carries out sandblasting, roughness control is in Ra5.5 between Ra6.5；It is total to sandblasting n times according to the method described above, n=roll needs
Spray the number of segment of the circumference equal dividing at position；
(3) sandblasting three times
Two templates are turned over and are fixed on the roller surface of secondary sandblasting, and make the left side and roll of two templates
The left side for needing to spray position section is concordant, and manual rotation's roll, sand-blasting gun is carried out along the gap between screw between two templates
Sandblasting, roughness control is in Ra5.5 between Ra6.5；It is total to sandblasting n times according to the method described above, n=roll needs to spray position
The number of segment of circumference equal dividing；
(4) hot roll preheats
The fresh surface presented after roughing in surface, it should prevent from polluting, forbid to be touched with hand, roll to be sprayed is placed in heating mantles
180-200 DEG C of temperature of interior control preheats 1 hour.
2. hot roll supersonic spray coating surface reconditioning preprocess method according to claim 1, it is characterised in that：Step
(1) in, roll is rotated with the speed of 25-30r.p.m, and sand-blasting gun is along axial direction with the speed of 100mm.p.m from surface one to be sprayed
Other end or so is held to walk.
3. hot roll supersonic spray coating surface reconditioning preprocess method according to claim 1, it is characterised in that：Described
Template selects flexible material, and shape makes according to correlation technique, and template is fixed on roller surface.
4. hot roll supersonic spray coating surface reconditioning preprocess method according to claim 1, it is characterised in that：Described two
A template is the identical parallelogram of geomery, and production method is：1. determining relevant parameter：Determine α, n, c；α=
Arctg b/a, α are the complementary angle of long side and short side angle, and as (a is the length for needing to spray the roll of section to helical angle, and b is to need
Spray surface perimeter=π d of the roll of section), n=needs to spray the number of segment of the roll circumference equal part of section, and c is a sandblasting
Width, that is, gap between screw width；2. blanking：Lower parallelogram plate, long side L1 2=a2+b2, short side L2=b ÷ n-
c÷cosα。
5. hot roll supersonic spray coating surface reconditioning preprocess method according to claim 1, it is characterised in that：Step
(2) secondary sandblasting comprises the concrete steps that：1. first marked in the both ends of the surface of the roll of a sandblasting by the point of circumference n equal part,
2. the right side of first template is aligned with the right side of roll surface and an equal part on the upper right A point alignment circumference of template
3. the right side of second template is aligned with the right side of roll surface and the upper right A point alignment of template is close to first template by point
It is aligned the Along ent of Along ent, the gap between screw that width is c is formed between two such template, 4. with sand-blasting gun to spiral
Gap carries out sandblasting, 5. removes first template, step is repeated 3., 4., until having sprayed n gap between screw；Step (3) and step
Suddenly the specific blasting method of (2) is the same.
6. hot roll supersonic spray coating surface reconditioning preprocess method according to claim 5, it is characterised in that：Step
(2) can be interchanged with the sequence of step (3), step (2) and the gap between screw in step (3) it is oppositely oriented, one be it is left-handed,
Another is dextrorotation.
7. hot roll supersonic spray coating surface reconditioning preprocess method according to claim 5, it is characterised in that：Work as hot rolling
When to be sprayed section of roller of length a=2000mm, width b=2669mm (d=850), roll circumference is divided into 8 sections, in template
Long side L1=3335mm, short side L2=250.545mm, complementary angle α=53 ° of helical angle, that is, long side and short side angle, gap between screw
Width is 50mm, after carrying out sandblasting, obtains left-handed and dextrorotation each 8 helixes, forms argyle design.
8. hot roll supersonic spray coating surface reconditioning preprocess method according to claim 1, it is characterised in that：The step
Suddenly the sand material of (1) is middle emergy.
9. hot roll supersonic spray coating surface reconditioning preprocess method according to claim 1, it is characterised in that：The step
Suddenly sand material in (2) and (3) selects alloy particle, and the microhardness of alloy particle is greater than HV350, and 10-50 microns of particle size range.
10. hot roll supersonic spray coating surface reconditioning preprocess method according to claim 1, it is characterised in that：It is described
Sand material alloy particle in step (2) and (3) be evanohm, tungsten alloy, ferroalloy, tantalum alloy, it is a kind of in amorphous alloy or
Several mixtures.
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| CN201810872086.5A CN108842127B (en) | 2018-08-02 | 2018-08-02 | Pretreatment method for repairing supersonic spraying surface of hot roller |
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| CN201810872086.5A CN108842127B (en) | 2018-08-02 | 2018-08-02 | Pretreatment method for repairing supersonic spraying surface of hot roller |
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| CN108842127B CN108842127B (en) | 2020-02-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111155049A (en) * | 2020-01-03 | 2020-05-15 | 黄树华 | Supersonic spraying preprocessing device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103173713A (en) * | 2013-03-21 | 2013-06-26 | 马鞍山市恒意机械有限公司 | Supersonic spray process for shaped roll pass made of semisteel |
| CN104152841A (en) * | 2014-07-21 | 2014-11-19 | 江苏南山冶金机械制造有限公司 | Surface treatment process for carbon coated roller core |
| CN104451529A (en) * | 2014-12-09 | 2015-03-25 | 马鞍山市恒意机械有限公司 | Repairing pretreatment method for supersonic flame spraying surface of roller |
| CN105755419A (en) * | 2014-12-13 | 2016-07-13 | 重庆迎瑞升压铸有限公司 | Flame spraying technology |
-
2018
- 2018-08-02 CN CN201810872086.5A patent/CN108842127B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103173713A (en) * | 2013-03-21 | 2013-06-26 | 马鞍山市恒意机械有限公司 | Supersonic spray process for shaped roll pass made of semisteel |
| CN104152841A (en) * | 2014-07-21 | 2014-11-19 | 江苏南山冶金机械制造有限公司 | Surface treatment process for carbon coated roller core |
| CN104451529A (en) * | 2014-12-09 | 2015-03-25 | 马鞍山市恒意机械有限公司 | Repairing pretreatment method for supersonic flame spraying surface of roller |
| CN105755419A (en) * | 2014-12-13 | 2016-07-13 | 重庆迎瑞升压铸有限公司 | Flame spraying technology |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111155049A (en) * | 2020-01-03 | 2020-05-15 | 黄树华 | Supersonic spraying preprocessing device |
| CN111155049B (en) * | 2020-01-03 | 2022-07-05 | 张家港市晨艺电子有限公司 | Supersonic spraying preprocessing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108842127B (en) | 2020-02-18 |
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