CN109773598A - A kind of production method of scraper - Google Patents
A kind of production method of scraper Download PDFInfo
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- CN109773598A CN109773598A CN201910198772.3A CN201910198772A CN109773598A CN 109773598 A CN109773598 A CN 109773598A CN 201910198772 A CN201910198772 A CN 201910198772A CN 109773598 A CN109773598 A CN 109773598A
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- scraper
- coating
- face
- production method
- steel band
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Abstract
The present invention relates to paper making equipment technical fields, provide a kind of production method of scraper, including the first step, and steel band is cut into the steel band item of certain length；Second step grinds datum level on steel band item；Third step is processed the end face of scraper, and the angle theta of end face and vertical plane is made to reach predetermined value, is obtained cutter hub with datum level positioning；Coating material, is sprayed on end face by the 4th step by way of detonation flame spraying, forms coating；5th step forms the matrix of scraper by side and vertical plane angle δ reconditioning to predetermined value；The shape and thickness for correcting coating again, obtain scraper.Whereby, the present invention makes coating by way of detonation flame spraying, and the consistency for the coating that the high coating material of temperature of explosion center point sufficiently melts is high and big with the binding force of end face.The temperature of cutter hub will not be substantially increased in spraying process simultaneously, avoid the deformation of scraper.The linearity of obtained scraper edge is high, long service life.
Description
Technical field
The invention belongs to paper making equipment technical field more particularly to a kind of production methods of scraper.
Background technique
Referring to Fig. 1, existing scraper adheres to coating 2 made of wear-resistant material usually on the side of matrix 1, and passes through coating
2 make the toilet paper 4 on drying cylinder drying cylinder 3 remove and wrinkle.
It is located on the side of matrix 1 due to coating 2, supersonic speed can only be used in spraying coating material on matrix 1
Spraying or plasma spraying.However the mode of both sprayings is continous way spraying, is needed to spray-coating surface continuous heating.Due to
Using steel band as the basis material of scraper, continuous heating be easy to cause its deformation, influences the using effect of scraper.To prevent it
Deformation, usually required when carrying out spraying operation using dedicated fixture (such as patent No. CN101886240B and
Two kinds of fixtures disclosed in CN207452235U).Due to the limitation of spraying process, these fixtures must be provided with corresponding structure,
Such as in order to avoid temperature of steel strips is excessively high, cooling mechanism need to be increased；For another example for continuous spray, it is necessary to the roller of folding and unfolding steel coil strip be arranged
Son etc..These settings increase operational sequence, also the cost of manufacture of increased fixture, and then improve being fabricated to for scraper
This.
Coating material needs higher heating temperature in spraying simultaneously, to improve the binding force of coating and basis material
And the consistency of coating itself.However, supersonic spray coating and plasma spraying can not be provided suitable due to the limitation of its own
The temperature of conjunction, in addition to prevent matrix deformation from need to control temperature, therefore the low density of the coating using both methods production,
Scraper service life is seriously affected.
Referring back to Fig. 2, coating 2 is tightly attached on drying cylinder 3 existing scraper at work, is applied after use after a period of time
Arc groove can be ground on layer 2.Since coating 2 is used to scrape the side serious wear of paper, so with the aggravation of the degree of wear, when
After groove reaches certain depth, will cause because the contact area of coating 2 and drying cylinder 3 it is excessive caused by scrape paper difficulty phenomenon, very
To causing scraper to scrap.
This problem shortens the service life of scraper.
For this problem, also someone has carried out certain improvement to scraper at present: as application No. is CN100387775C
Patent discloses a kind of scraper, by spraying one layer of working lining on the surface of alloy coat, forms Three-tider architecture to improve
The wearability of scraper；For another example application No. is the patents of CN205077322U improves making for scraper using ceramic material coating
Use the service life.
However above scheme is only to improve the wearability of coating, and the side of matrix 1 is still arranged in the position of coating
Face does not tackle the problem at its root.Therefore the effect that the service life improves is limited, moreover the wearability for improving coating needs to add phase
The ingredient answered also improves the cost of manufacture of scraper.
In summary, the existing technology has inconveniences and defects in actual use, so it is necessary to be improved.
Summary of the invention
For above-mentioned defect, the purpose of the present invention is to provide a kind of production methods of scraper, by the way that steel band to be cut into
The steel band item of certain length；Datum level is ground on steel band item later, then is positioned with datum level, the end face of scraper is processed；Then
Coating material is sprayed on end face by way of detonation flame spraying, forms coating；The shape of side and coating is finally corrected out,
Obtain scraper.Scraper includes matrix, and matrix is equipped with the side and end face for being used to form blade.The present invention is using detonation flame spraying
Mode makes coating, the consistency for the coating that the high coating material of temperature of explosion center point sufficiently melts it is high and with end face
Binding force is big.The temperature of cutter hub will not be substantially increased in spraying process simultaneously, avoid the deformation of scraper.Obtained scraper edge
The linearity it is high, long service life.
To achieve the goals above, the present invention provides a kind of production method of scraper, includes the following steps:
Steel band is cut into the steel band item of certain length by the first step；
Second step grinds datum level on steel band item；
Third step processes the end face of scraper, and the angle theta of end face and vertical plane is made to reach pre- with datum level positioning
Fixed number value, obtains cutter hub；
Coating material, is sprayed on end face by the 4th step by way of detonation flame spraying, forms coating；
5th step forms the matrix of scraper by side and vertical plane angle δ reconditioning to predetermined value；Coating is corrected again
Shape and thickness, obtain scraper.
The production method of scraper according to the present invention, the 4th step carry out blasting treatment to end face before.
The production method of scraper according to the present invention, the length of the steel band item are 1~6 meter.
The frequency of the production method of scraper according to the present invention, the detonation flame spraying is no more than 6 times/second.
The frequency of the production method of scraper according to the present invention, the detonation flame spraying is no more than 4 times/second.
The production method of scraper according to the present invention, the material of the coating are wear-resistant material.
The production method of scraper according to the present invention, the θ are 75~90 °.
The production method of scraper according to the present invention, the δ are 0-5 °.
The production method of scraper according to the present invention, if using fixture while fixed dry plate cutter hub before the 4th step.
The production method of scraper according to the present invention, the fixture include pressing from both sides for the first clamping plate of fixed cutter body and second
Plate；The first clamping plate and second clamping plate are fixed using connecting column.
The production method that the present invention passed through be designed to provide a kind of scraper, by the steel that steel band is cut into certain length
Tape；Datum level is ground on steel band item later, then is positioned with datum level, the end face of scraper is processed；Then pass through detonation flame spraying
Mode coating material is sprayed on end face, formed coating；The shape for finally correcting out side and coating, obtains scraper.It scrapes
Knife includes matrix, and matrix is equipped with the side and end face for being used to form blade.The present invention makes painting by the way of detonation flame spraying
The consistency of layer, the coating that the high coating material of temperature of explosion center point sufficiently melts is high and big with the binding force of end face.
The temperature of cutter hub will not be substantially increased in spraying process simultaneously, avoid the deformation of scraper.The linearity of obtained scraper edge
Height, long service life.
Detailed description of the invention
Fig. 1 is the working state schematic representation of the scraper of the prior art；
Fig. 2 is the state of wear schematic diagram of the scraper of the prior art；
Fig. 3 is the structural schematic diagram of an embodiment of scraper of the invention；
Fig. 4 is the operation principle schematic diagram of scraper of the invention；
Fig. 5 is the structural schematic diagram of an embodiment of scraper of the invention；
Fig. 6 is the structural schematic diagram of an embodiment of scraper of the invention；
Fig. 7 is the structural schematic diagram of an embodiment of fixture of the invention；
In figure: 1- matrix, the end face 11-, the side 12-, 13- groove top face, 14- groove bottom；2- coating, 3- drying cylinder, 4- health
Paper, 5- cutter hub, 51- first clamping plate, 52- second clamping plate, 53- connecting column.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Referring to Fig. 3, Fig. 7 includes the following steps: the present invention provides a kind of production method of scraper
Steel band is cut into the steel band item of certain length by the first step；Steel band can be cut into 1 according to the specification of specific scraper~
6 meters long of steel band item.
Second step grinds datum level on steel band item；
Third step processes the end face 11 of scraper, and reach end face 11 and the angle theta of vertical plane with datum level positioning
To predetermined angular, cutter hub 5 is obtained；
Coating material is sprayed on end face 11 by the 4th step by way of detonation flame spraying, forms coating 2；
For the binding force for enhancing coating material and end face 11, blasting treatment is carried out to end face 11 before carrying out the 4th step.
When detonation flame spraying, the temperature of explosion center point melts coating material sufficiently up to 3500 DEG C, is spraying to end face
After forming coating 2 on 11, the high binding force simultaneously between coating 2 and end face 11 of consistency of coating 2 is big, improves coating 2
Wearability extends the service life of scraper.Since burst period is of short duration, the heat of generation be completely used for melt coating material and
The impact force of spraying is provided, therefore the temperature of cutter hub 5 will not be substantially increased.Simultaneously because detonation flame spraying is intermittent spraying, lead to
The frequency for crossing control detonation flame spraying can be good at avoiding the rising of 5 temperature of cutter hub.
By the test of many times of inventor, the frequency of detonation flame spraying is no more than 6 times/second, preferably more than 4 times/second.It is spraying
During painting, the temperature of cutter hub 5 is no more than 50 DEG C, avoids the deformation of cutter hub 5, also avoids its interior tissue and change.
5th step forms the matrix 1 of scraper by side 12 and vertical plane angle δ reconditioning to predetermined value；Coating is corrected again
Shape and thickness, obtain scraper.
Referring to Fig. 3, the scraper of method production according to the present invention, including matrix 1, matrix 1 are equipped with and are used to form
The side 12 and end face 11 of blade.
Side 12 is for being bonded drying cylinder 3；The coating 2 for scraping toilet paper 4 is attached on end face 11.
Coating 2 is wear-resistant material production, the preferred tungsten-cobalt carbide of the present invention.
The working principle of scraper of the invention is referring to fig. 4:
Fig. 4-a, when new scraper, coating 2 is contacted with drying cylinder 3；Coating 2 sweeps toilet paper 4, while contacting and rubbing with drying cylinder 3
It wipes, and then generates abrasion；
Fig. 4-b, after a period of use with the aggravation of abrasion, coating 2 is worn away a part, and coating 2 connects with drying cylinder 3
Contacting surface product becomes larger, and the trend of rust occurs in scraper；
Fig. 4-c, drying cylinder 3 directly contacts side 12 at this time, wears 1 material of matrix at side 12.
By described above it is found that the present invention in use, since the material is soft easily grinds off for matrix 1, reduces
Coating 2 scrapes the abrasion of paper side.In other words, in use, drying cylinder 3 plays the abrasion of the matrix 1 at side 12
The service life of scraper is substantially prolonged to ensure that the sharpness of scraper to the correcting action of blade.
In the prior art, since side 12 is equipped with coating 2, to avoid scratching drying cylinder 3 in wear process floating coat 2,
The fitting area of the two need to be increased, so the angle δ of side 12 and vertical plane is usually arranged as 3~5 °.
In conjunction with Fig. 3, since scraper side 12 of the invention does not have coating 2, the angle δ of side 12 and vertical plane can
Think 0 °, reduces the process at the grinding angle δ of scraper in the production process, reduce the cost of manufacture of scraper.It can also be based on guarantor
The considerations of protecting drying cylinder 3, the angle δ is set as 3~5 ° of the prior art；Can also 0~2 ° or 0 be set by the angle δ according to the actual situation
~5 °.
In order to keep the corrugated paper line thickness of toilet paper 4 reasonable, the angle theta of scraper end face 11 of the invention and vertical plane is 75
~90 °, preferably 80~85 ° of the present invention.
If the thickness of coating 2 is excessive, it will cause in use, drying cylinder 3 mainly rubs with coating 2, weakens certainly
Correcting action.Therefore pass through the test of many times of inventor, the thickness of coating 2 is not more than 0.16mm.Embodiment shown in Fig. 3
In, coating 2 with a thickness of 0.07~0.15mm, preferably 0.08 or 0.09mm.
In the wear process of 1 material of matrix at side 12, drying cylinder 3 and the width of the contact surface of coating 2 are basically unchanged,
But it is gradually increased with the width of the contact surface of matrix 1.But overall width reache a certain level after (as more than 0.2mm or being more than
It 0.3mm) will appear the phenomenon for scraping paper difficulty, scraper blade life also reaches capacity at this time.
It therefore is the service life for further extending scraper, the present invention also sets up an embodiment.Referring to Fig. 5, at side 12
Matrix 1 on open up it is fluted；Groove includes groove top face 13 and groove bottom 14.
In this embodiment, when abrasion, the overall width of the contact surface of drying cylinder 3 and matrix 1 and coating 2 keeps stablizing, therefore into
One step extends the service life of scraper.It can thus be appreciated that for the sharpness for guaranteeing scraper, when abrasion, the overall width of contact surface is not
Can be too big, therefore the maximum distance of blade groove top surface 13 of the invention and end face 11 is not more than 0.13mm, coating 2 with a thickness of
0.03~0.05mm, overall thickness are no more than 0.18mm.
Scraper needs the intensity for having certain during the work time simultaneously, it is therefore preferred to, groove top face 13 and end face 11
Distance is 0.09~0.13mm.Preferably, groove top face 13 is set in parallel with end face 11, and above-mentioned overall width is protected when guaranteeing abrasion
It is fixed to keep steady.
The present invention also sets up an embodiment, referring to Fig. 6, to avoid generating biggish answer at root of notch in use
Power is concentrated, and groove top face 13 is connect with groove bottom 14 using arc surface transition.Preferably, groove bottom 14 is arc surface.
For the service life for improving scraper, the deeper the depth of groove the better, but based on the considerations of strength factor, the depth of groove
Degree is not more than the half of 1 thickness of matrix.
Scraper matrix 1 of the invention with a thickness of 1.1~1.3mm.It can also be by those skilled in the art according to scraper
Specification and practical service environment, adaptability increases or reduces on the basis of this thickness range.
Referring to Fig. 7, to improve production efficiency, if before the spraying of the 4th step dry plate cutter hub 5 can be fixed simultaneously using fixture.
Since the coating 2 of scraper of the invention is arranged on end face 11, and in spraying process, the temperature of matrix 1 does not rise substantially, because
The greatly simplified structure without cooling cutter hub 5 of the structure of this fixture.Such as the present invention also provides a kind of fixture for spraying, packets
Include the first clamping plate 51 and second clamping plate 52 for fixed cutter body 5；The first clamping plate 51 and second clamping plate 52 use connecting column
53 is fixed.
Compared with the spraying method of the prior art, fixture of the invention can 18~20 cutter hubs 5, Zhi Houtong of disposable clamping
Shi Jinhang spraying, greatly improves work efficiency.And clamp structure is simple, easy to operate, reduces the cost of its production.
In conclusion the present invention provides a kind of production method of scraper, by the steel band that steel band is cut into certain length
Item；Datum level is ground on steel band item later, then is positioned with datum level, the end face of scraper is processed；Then pass through detonation flame spraying
Coating material is sprayed on end face by mode, forms coating；The shape for finally correcting out side and coating, obtains scraper.Scraper
Including matrix, matrix is equipped with the side and end face for being used to form blade.The present invention makes coating by the way of detonation flame spraying,
The consistency for the coating that the high coating material of temperature of explosion center point sufficiently melts is high and big with the binding force of end face.Simultaneously
The temperature of cutter hub will not be substantially increased in spraying process, avoid the deformation of scraper.The linearity of obtained scraper edge is high, makes
It is long with the service life.
Certainly, the present invention can also have other various embodiments, without deviating from the spirit and substance of the present invention, ripe
It knows those skilled in the art and makes various corresponding changes and modifications, but these corresponding changes and change in accordance with the present invention
Shape all should fall within the scope of protection of the appended claims of the present invention.
Claims (10)
1. a kind of production method of scraper, which comprises the steps of:
Steel band is cut into the steel band item of certain length by the first step；
Second step grinds datum level on steel band item；
Third step processes the end face of scraper, and the angle theta of end face and vertical plane is made to reach predetermined number with datum level positioning
Value, obtains cutter hub；
Coating material, is sprayed on end face by the 4th step by way of detonation flame spraying, forms coating；
5th step forms the matrix of scraper by side and vertical plane angle δ reconditioning to predetermined value；The shape of coating is corrected again
And thickness, obtain scraper.
2. the production method of scraper according to claim 1, which is characterized in that sprayed before the 4th step to end face
Sand processing.
3. the production method of scraper according to claim 1, which is characterized in that the length of the steel band item is 1~6 meter.
4. the production method of scraper according to claim 1, which is characterized in that the frequency of the detonation flame spraying is no more than 6
Secondary/second.
5. the production method of scraper according to claim 4, which is characterized in that the frequency of the detonation flame spraying is no more than 4
Secondary/second.
6. the production method of scraper according to claim 1, which is characterized in that the material of the coating is wear-resistant material.
7. the production method of scraper according to claim 1, which is characterized in that the θ is 75~90 °.
8. the production method of scraper according to claim 1, which is characterized in that the δ is 0-5 °.
9. the production method of scraper described in any one according to claim 1~8, which is characterized in that before the 4th step
If fixing dry plate cutter hub simultaneously using fixture.
10. the production method of scraper according to claim 9, which is characterized in that the fixture includes being used for fixed cutter body
First clamping plate and second clamping plate；The first clamping plate and second clamping plate are fixed using connecting column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910198772.3A CN109773598A (en) | 2019-03-15 | 2019-03-15 | A kind of production method of scraper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910198772.3A CN109773598A (en) | 2019-03-15 | 2019-03-15 | A kind of production method of scraper |
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| Publication Number | Publication Date |
|---|---|
| CN109773598A true CN109773598A (en) | 2019-05-21 |
Family
ID=66489323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910198772.3A Pending CN109773598A (en) | 2019-03-15 | 2019-03-15 | A kind of production method of scraper |
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Citations (8)
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|---|---|---|---|---|
| EP0897792A2 (en) * | 1997-08-18 | 1999-02-24 | Fort James Corporation | Extended life doctor blade and method of forming the same |
| US6207021B1 (en) * | 1996-05-02 | 2001-03-27 | Btg Eclepens S.A. | Creping blade |
| CN1740371A (en) * | 2004-08-23 | 2006-03-01 | 财团法人工业技术研究院 | Nail clippers-file and its making process |
| CN102560320A (en) * | 2012-01-05 | 2012-07-11 | 哈尔滨飞机工业集团有限责任公司 | Detonation gun spraying method of tungsten carbide |
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| CN106182906A (en) * | 2016-07-13 | 2016-12-07 | 北京华恩表面工程技术有限公司 | A kind of creping blade and preparation method thereof |
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2019
- 2019-03-15 CN CN201910198772.3A patent/CN109773598A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6207021B1 (en) * | 1996-05-02 | 2001-03-27 | Btg Eclepens S.A. | Creping blade |
| EP0897792A2 (en) * | 1997-08-18 | 1999-02-24 | Fort James Corporation | Extended life doctor blade and method of forming the same |
| CN1740371A (en) * | 2004-08-23 | 2006-03-01 | 财团法人工业技术研究院 | Nail clippers-file and its making process |
| CN102560320A (en) * | 2012-01-05 | 2012-07-11 | 哈尔滨飞机工业集团有限责任公司 | Detonation gun spraying method of tungsten carbide |
| CN104789921A (en) * | 2015-04-30 | 2015-07-22 | 上海市机械制造工艺研究所有限公司 | Process for spraying composite coating on metal surface |
| CN106182906A (en) * | 2016-07-13 | 2016-12-07 | 北京华恩表面工程技术有限公司 | A kind of creping blade and preparation method thereof |
| CN207326479U (en) * | 2017-08-23 | 2018-05-08 | 哈尔滨汽轮机厂有限责任公司 | A kind of gland sealing gear wing cuts special fixture |
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