CN117798032A - Preparation method of band saw blade surface lubricating coating and band saw blade - Google Patents
Preparation method of band saw blade surface lubricating coating and band saw blade Download PDFInfo
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- CN117798032A CN117798032A CN202311851389.6A CN202311851389A CN117798032A CN 117798032 A CN117798032 A CN 117798032A CN 202311851389 A CN202311851389 A CN 202311851389A CN 117798032 A CN117798032 A CN 117798032A
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- band saw
- saw blade
- lubricating coating
- coating
- band
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- 238000000576 coating method Methods 0.000 title claims abstract description 78
- 239000011248 coating agent Substances 0.000 title claims abstract description 76
- 230000001050 lubricating effect Effects 0.000 title claims abstract description 63
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- 238000005488 sandblasting Methods 0.000 claims abstract description 34
- 238000003618 dip coating Methods 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 23
- 238000001035 drying Methods 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 238000004140 cleaning Methods 0.000 claims abstract description 14
- 239000007921 spray Substances 0.000 claims abstract description 11
- 239000002253 acid Substances 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 239000000243 solution Substances 0.000 claims description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 15
- 238000005554 pickling Methods 0.000 claims description 13
- 239000006004 Quartz sand Substances 0.000 claims description 12
- 238000005422 blasting Methods 0.000 claims description 9
- 239000000084 colloidal system Substances 0.000 claims description 8
- 239000010431 corundum Substances 0.000 claims description 7
- 229910052593 corundum Inorganic materials 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 6
- 238000005520 cutting process Methods 0.000 description 11
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 8
- 238000005461 lubrication Methods 0.000 description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 229910052961 molybdenite Inorganic materials 0.000 description 2
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 2
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 2
- 230000003449 preventive effect Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002173 cutting fluid Substances 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Abstract
The application discloses a preparation method of a band saw blade surface lubricating coating and a band saw blade, wherein the preparation method comprises the following steps: pretreating the band saw blade, including sequentially performing wet sand blasting, spray cleaning, acid cleaning and drying; dip-coating the treated band saw blade, namely immersing the whole band saw blade into a dip-coating liquid, and drying to obtain a band saw blade containing a lubricating coating; and wrapping the saw teeth of the band saw blade containing the lubricating coating by using a tooth protecting sleeve, and carrying out sand blasting treatment on the band body of the band saw blade to finish the preparation of the lubricating coating on the surface of the band saw blade. The preparation method has the advantages of simple process route, high processing efficiency and low cost; and the thickness of the lubricating coating can be precisely controlled through dip-coating time, and the lubricating coating can not influence the size of the band saw blade.
Description
Technical Field
The application relates to the technical field of lubrication coatings of band saw blades, in particular to a preparation method of a band saw blade surface lubrication coating and a band saw blade.
Background
When the cutter is used for cutting, high friction force can be formed on the front cutter surface of the cutter, crescent wear of the front cutter surface can be easily formed, and the cutter is invalid. In order to improve the life of the tool, various methods have been attempted to reduce the friction coefficient of the rake face, such as using a cutting fluid with a lubricating function, reducing the roughness of the rake face, using a lubricating coating, and the like.
The band saw blade comprises a band body and saw teeth, wherein the saw teeth are parts for cutting a workpiece, and the friction coefficient of the surface of the saw blade needs to be reduced to improve the service life. The driving force of the band saw blade running on the band sawing machine comes from the friction force between the saw wheel and the band body, if the friction coefficient of the surface of the band body is reduced, the friction force is inevitably greatly reduced, the driving force is insufficient, the band saw blade is very easy to slip with the saw wheel, and therefore the friction coefficient of the surface of the band body is not required to be reduced. The structural particularity of the band saw blade presents a significant obstacle to the extension of its useful life.
Disclosure of Invention
The invention provides a preparation method of a band saw blade surface lubricating coating and a band saw blade, which are used for solving the technical problem that the service life of a band saw blade front tool surface crescent groove is short due to easy abrasion in the prior art.
In order to achieve the above purpose, the technical scheme provided by the invention is as follows:
in a first aspect of the invention, a method for preparing a lubricating coating on the surface of a band saw blade is provided, comprising the following steps: s1, carrying out pretreatment on a band saw blade, wherein the pretreatment comprises the steps of wet sand blasting, spray cleaning, acid cleaning and drying in sequence; s2, dip-coating the band saw blade treated in the step S1, namely immersing the whole band saw blade into a dip-coating liquid, and drying to obtain a band saw blade containing a lubricating coating;
s3, wrapping the saw teeth of the band saw blade containing the lubricating coating by using a tooth protecting sleeve, and carrying out sand blasting on the band body of the band saw blade to finish the preparation of the lubricating coating on the surface of the band saw blade.
Further, in the step S3, the sand blasting medium in the step of sand blasting includes corundum, the sand blasting medium is polyhedral, and the number of sand grains is 40-120 meshes.
Further, in the step S3, the tooth protecting sleeve is made of plastic.
Further, the dip-coating liquid in the step S2 comprises a mixed liquid of MoS2 colloid and water, and the mass ratio of the MoS2 colloid to the water is 10-25:100.
Further, the thickness of the lubricating coating formed on the surface of the band saw blade is 1-10 mu m.
Further, the temperature of the dip-coating liquid in the step S2 is 100 ℃, and the dip-coating time is 20-80 min.
Further, in the step S1, the sand blasting medium in the step of wet sand blasting includes a mixture of quartz sand and water, the mass ratio of the quartz sand to the water is 1:2-10, and the mesh number of the quartz sand is 40 mesh-120 mesh.
Further, in the step S1, the pickling solution in the pickling step includes a hydrochloric acid-alcohol solution, and the concentration of the hydrochloric acid-alcohol solution is 5% -25%; the residence time of the band saw blade in the pickling solution is 2-10 s.
Further, in the step S1, the drying temperature in the drying step is 100 ℃.
In a second aspect of the present invention, there is provided a band saw blade comprising a body and a lubricating coating disposed on a surface of the body, the lubricating coating being prepared by the above-described preparation method.
According to the preparation method of the band saw blade surface lubricating coating, the band saw blade is firstly subjected to pretreatment to remove greasy dirt on the surface of the band saw blade, so that a clean, dry, stain-free and oxidation-free band saw blade body is obtained; and then, the whole surfaces of the band body and the saw teeth of the band saw blade are dip-coated with a layer of lubricating coating, and then, the band body is subjected to sand blasting treatment on the premise of adopting a tooth protecting sleeve to protect the saw teeth, so that the lubricating coating on the surface of the band body is removed, and the band saw blade with the lubricating coating formed on the saw teeth only is obtained. The preparation method has the advantages of simple process route, high processing efficiency and low cost; and the thickness of the lubricating coating can be precisely controlled through dip-coating time, and the lubricating coating can not influence the size of the band saw blade.
Detailed Description
In order to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below, and it is obvious that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
In a first aspect of the embodiments of the present application, a method for preparing a surface lubrication coating of a band saw blade is provided, including the steps of:
s1, carrying out pretreatment on a band saw blade, wherein the pretreatment comprises the steps of wet sand blasting, spray cleaning, acid cleaning and drying in sequence;
s2, dip-coating the band saw blade treated in the step S1, namely immersing the whole band saw blade into a dip-coating liquid, and drying to obtain a band saw blade containing a lubricating coating;
s3, wrapping saw teeth of the band saw blade containing the lubricating coating by using a tooth protecting sleeve, and carrying out sand blasting on the band body of the band saw blade to finish the preparation of the lubricating coating on the surface of the band saw blade.
The application finds that the band saw blade must ensure clean, dry and oil-free surfaces before dip-coating in the production process, otherwise, poor binding force between the coating and the band saw blade after dip-coating can be caused. However, the band saw blade belongs to steel parts, and the surface of the band saw blade is easy to rust, so that rust-preventive oil is often required to be smeared on the surface of the band saw blade. Meanwhile, the band saw blade has certain requirements on fatigue resistance of the band body, the fatigue resistance of the band body needs to be improved through sand blasting or shot blasting treatment, a plurality of micro pits exist on the surface of the band body after sand blasting or shot blasting, and the existence of the micro pits is favorable for protecting rust preventive oil, but also can cause the problem that the rust preventive oil is difficult to remove.
In the embodiment of the application, the band saw blade is subjected to wet sand blasting treatment by the wet sand blaster before dip-coating, so that the greasy dirt on the surface of the band saw blade can be completely removed. The spray cleaning uses a spray gun to spray water at 40-80 ℃, which is a rough cleaning process, and aims to remove sand grains remained on the surface of the band saw blade after wet sand blasting. After spray cleaning, the band saw blade is dried, so that water stains on the surface of the band saw blade can be removed, and the band saw blade is kept dry. The impurities of oil dirt and dust on the surface of the band saw blade after wet sand blasting, spray cleaning and drying can be completely removed, and the surface of the band saw blade is dry and clean. The band saw blade is then pickled and the surface oxide skin thereof can be removed. And rinsing the band saw blade, wherein the rinsing medium is water at 40-80 ℃ for more than 1min, and ultrasonic rinsing can be adopted. Finally, the band saw blade is dried at the temperature of 100 ℃. The acid liquor on the surface of the band saw blade is removed and kept dry through rinsing and drying treatment.
Structurally, the band saw blade includes a band body and saw teeth, wherein the saw teeth are the portions of the work piece that are cut and the surfaces thereof require a lubricating coating to increase the useful life. However, the lubrication coating on the band body of the band saw blade is rather unfavorable for cutting. This is because the driving force of the band saw blade running on the band sawing machine comes from the friction force between the saw wheel and the band body, and if the surface of the band body is covered with the lubricating coating, the friction coefficient of the surface of the band body is greatly reduced, which inevitably results in a great reduction in the friction force between the saw wheel and the band body, so that the driving force is insufficient, and the band saw blade is very easy to slip with the saw wheel. If friction is increased, the tension is increased, but too much tension can cause the band saw blade to break. Therefore, the surface of the belt body must not be covered with a lubricating coating.
The present application has attempted to immerse only the saw tooth portion of the band saw blade in the dip coating liquid, but this results in a very complicated apparatus on the one hand, and on the other hand, since the band body is not immersed in the dip coating liquid, the entire temperature of the band saw blade is lower than the actual temperature of the dip coating liquid, thereby resulting in a lubrication coating formed on the saw tooth surface having a low bonding force with the substrate. In this application embodiment, at first with the whole immersion of sawtooth and area body in the dip coating liquid, form lubricating coating respectively at its surface, again with the sawtooth utilize behind the tooth protection cover parcel, carry out sand blasting to the area body to get rid of the lubricating coating on area body surface.
In this application embodiment, the setting of tooth protection cover not only can protect the lubricating coating on sawtooth surface at the in-process of sand blasting, but also can protect the sawtooth not damaged in follow-up storage and transportation.
According to the preparation method of the band saw blade surface lubricating coating, the band saw blade is firstly subjected to pretreatment, oil stains on the surface of the band saw blade are removed, and a clean, dry, stain-free and oxidation-free band saw blade body is obtained; and then, a layer of lubricating coating is integrally dip-coated on the surfaces of the band body and the saw teeth of the band saw blade, and then, the band body is subjected to sand blasting treatment on the premise that the tooth protecting sleeve protects the saw teeth, so that the lubricating coating on the surface of the band body is removed, and the band saw blade with the lubricating coating only formed on the saw teeth is obtained. The preparation method has the advantages of simple process route, high processing efficiency and low cost; and the thickness of the lubricating coating can be precisely controlled through dip-coating time, and the lubricating coating can not influence the size of the band saw blade.
In some embodiments, in step S3, the blasting medium in the step of blasting includes corundum, and the blasting medium is polyhedral, and the number of grains is 40-120 mesh. The polyhedral medium in the embodiment of the application refers to a non-spherical sand blasting medium, and the polyhedral medium is selected instead of the spherical medium because the polyhedral medium can remove the lubricating coating on the surface of the belt body and can improve the fatigue resistance of the belt body. The corundum may be brown corundum or white corundum. The sand blasting pressure is 0.3 MPa-0.8 MPa.
In some embodiments, in step S3, the tooth protecting sleeve is made of plastic. It can be understood that the tooth protecting sleeve made of plastic material can not damage the cutting edge of the saw teeth, and can protect the saw teeth from being damaged in the subsequent storage and transportation processes. The specific plastic component is not limited.
In some embodiments, the dip coating liquid in step S2 comprises MoS 2 Colloid and water mixed solution, moS 2 The mass ratio of the colloid to the water is 10-25:100. MoS of the embodiment of the application 2 The lubricating coating covers the surface of the saw teeth, the coating separates the cutting chips from the saw teeth during cutting, the cutting chips are in contact with the coating, the friction generated between the cutting chips and the coating is small, the cutting resistance caused by friction in the cutting process can be effectively reduced, the abrasion of the front cutter surface caused by friction is greatly reduced, and the service life of the band saw blade is prolonged. The thickness of the lubricating coating formed on the surface of the band saw blade is 1-10 mu m. Compared with the PVD method, the thickness of the coating deposited by the PVD method is similar, but the method of the embodiment of the application is high in production efficiency, low in cost and simple in process; compared with the spraying method, the thickness of the coating formed by spraying is generally more than 100 mu m, and the coating can bring large change to the size of the band saw blade, so that the coating is not suitable for workpieces with high requirements on the dimensional accuracy such as the band saw blade.
In some embodiments, the dip coating in step S2 is performed at a temperature of 100 ℃ for a time period of 20min to 80min. The dip coating in the embodiment of the application is high in temperature and long in time, and is beneficial to improving the binding force between the band saw blade and the lubricating coating. The dip coating has a certain temperature, so that the internal stress of the surface of the band saw blade is changed, and the change is random. The variation in the surface internal stress has the effect of affecting the fatigue resistance of the band saw blade. Thus, after the formation of the lubricating coating, the belt body is sandblasted in step S3, and the residual compressive stress can be reintroduced in addition to the removal of the lubricating coating on the surface of the belt body, thereby improving the fatigue resistance of the belt body.
Specifically, in the step S1, the sand blasting medium in the step of wet sand blasting comprises a mixture of quartz sand and water, wherein the mass ratio of the quartz sand to the water is 1:2-10, and the mesh number of the quartz sand is 40-120 meshes. In the embodiment of the application, the mixture of the quartz sand and the water can effectively remove the greasy dirt on the surface of the band saw blade. In addition, in the step S1, the pickling solution in the pickling step comprises hydrochloric acid alcohol solution, and the concentration of the hydrochloric acid alcohol solution is 5% -25%; the residence time of the band saw blade in the pickling solution is 2-10 s. The hydrochloric acid alcohol solution can remove the oxide skin on the surface of the band saw blade, so that the surface of the band saw blade is clean.
In a second aspect of the embodiments of the present application, there is also provided a band saw blade including a body and a lubrication coating disposed on a surface of the body, the lubrication coating being prepared by the above-mentioned preparation method.
Example 1
The preparation method of the band saw blade surface lubricating coating comprises the following steps:
1. pretreatment: the method comprises six working procedures of wet sand blasting, spray cleaning, drying, acid washing, rinsing and drying.
The band saw blade is passed through a wet sand blasting machine, the wet sand blasting medium is a mixture of quartz sand and water, the mass ratio of the quartz sand to the water is 1:6, and the number of quartz sand meshes is 80 meshes.
And (3) spraying and cleaning the band saw blade after wet sand blasting, and spraying tap water at 60 ℃ by a spray gun.
And drying the sprayed and cleaned band saw blade.
And (3) pickling the dried band saw blade, wherein the pickling solution is hydrochloric acid alcohol solution with the concentration of 15%, and the residence time of the band saw blade in the pickling solution is 6s.
And (3) carrying out ultrasonic rinsing on the band saw blade after pickling, wherein a rinsing medium is water at 60 ℃, and the rinsing time is longer than 1min.
And drying the rinsed band saw blade in the environment of 100 ℃.
2. Dip coating: immersing the whole band saw blade pretreated in the step 1 into a dipping liquid which is MoS 2 Colloid and water mixed solution, moS 2 The mass ratio of the colloid to the water is 15:100. The temperature of the dip coating liquid is 100 ℃, and the dip coating time is 50min. And drying the dip-coated band saw blade in the environment of 150 ℃ for more than 5 minutes. The thickness of the lubrication coating on the surface of the band saw blade after drying was measured to be 5 μm.
3. Post-treatment: the dip-coated and dried band saw blade is taken, the saw teeth are wrapped by a plastic tooth protecting sleeve, and the band saw blade is subjected to sand blasting treatment, wherein a sand blasting medium is polyhedral white corundum, the grain size of the sand is 80 meshes, and the sand blasting pressure is 0.5MPa.
Example 2
This example is substantially the same as example 1 except that the thickness of the lubricating coating on the surface of the band saw blade is 10. Mu.m.
Example 3
This example is substantially the same as example 1 except that the thickness of the lubricating coating on the surface of the band saw blade is 1. Mu.m.
The lubricating coatings of the band saw blades of examples 1 to 3 were respectively subjected to mechanical property test, and No. 10 steel having a diameter of 200mm was sawed using the band saw blade, the linear speed was 80m/min, and the cutting efficiency required to reach 80cm 2 /min～100cm 2 The sawing results per min are shown in Table 1. The typical service life of prior art band saw blades is about 12m 2 。
TABLE 1 mechanical test of band saw blade and saw cut area results
As can be seen from table 1, the saw areas of the band saw blades of examples 1 to 3 are much larger than those of the band saw blades of the prior art. Therefore, the lubricating coating can avoid rapid failure of the band saw blade due to abrasion, and the service life of the band saw blade is prolonged.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A preparation method of a band saw blade surface lubricating coating is characterized by comprising the following steps: the method comprises the following steps:
s1, carrying out pretreatment on a band saw blade, wherein the pretreatment comprises the steps of wet sand blasting, spray cleaning, acid cleaning and drying in sequence;
s2, dip-coating the band saw blade treated in the step S1, namely immersing the whole band saw blade into a dip-coating liquid, and drying to obtain a band saw blade containing a lubricating coating;
s3, wrapping the saw teeth of the band saw blade containing the lubricating coating by using a tooth protecting sleeve, and carrying out sand blasting on the band body of the band saw blade to finish the preparation of the lubricating coating on the surface of the band saw blade.
2. The method for producing a surface lubricating coating for band saw blades according to claim 1, wherein in the step S3, the blasting medium in the step of blasting includes corundum, the blasting medium is polyhedral, and the mesh size of the blasting medium is 40 mesh to 120 mesh.
3. The method for preparing a surface lubricating coating for band saw blades according to claim 1, wherein in the step S3, the tooth protecting sleeve is made of plastic.
4. The method of claim 1, wherein the dip coating solution in step S2 comprises MoS 2 A mixed solution of colloid and water, the MoS 2 The mass ratio of the colloid to the water is 10-25:100.
5. The method of producing a lubricating coating for a surface of a band saw blade according to claim 1, wherein the lubricating coating formed on the surface of the band saw blade has a thickness of 1 μm to 10 μm.
6. The method for preparing a surface lubricating coating for band saw blades according to claim 1, wherein the dip-coating liquid in the step S2 has a temperature of 100 ℃ and a dip-coating time of 20min to 80min.
7. The method for preparing a lubricating coating for a surface of a band saw blade according to claim 1, wherein in the step S1, the sand blasting medium comprises a mixture of quartz sand and water in a mass ratio of 1:2-10, and the mesh number of the quartz sand is 40-120 mesh.
8. The method for preparing a lubricating coating on a surface of a band saw blade according to claim 1, wherein in the step S1, the pickling solution in the step of pickling comprises a hydrochloric acid-alcohol solution with a concentration of 5% -25%; the residence time of the band saw blade in the pickling solution is 2-10 s.
9. The method of claim 1, wherein in the step S1, the drying temperature in the drying step is 100 ℃.
10. A band saw blade comprising a body and a lubricating coating provided on a surface of the body, the lubricating coating being prepared by the preparation method according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311851389.6A CN117798032A (en) | 2023-12-29 | 2023-12-29 | Preparation method of band saw blade surface lubricating coating and band saw blade |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311851389.6A CN117798032A (en) | 2023-12-29 | 2023-12-29 | Preparation method of band saw blade surface lubricating coating and band saw blade |
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| Publication Number | Publication Date |
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| CN117798032A true CN117798032A (en) | 2024-04-02 |
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|---|---|---|---|
| CN202311851389.6A Pending CN117798032A (en) | 2023-12-29 | 2023-12-29 | Preparation method of band saw blade surface lubricating coating and band saw blade |
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| Country | Link |
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| CN (1) | CN117798032A (en) |
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- 2023-12-29 CN CN202311851389.6A patent/CN117798032A/en active Pending
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