CN102296262A - Leveling roller surface nanocrystalline enhancement and spot chromium plating texturing method - Google Patents
Leveling roller surface nanocrystalline enhancement and spot chromium plating texturing method Download PDFInfo
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Abstract
The invention provides a leveling roller surface nanocrystalline enhancement and spot chromium plating texturing method. A nanocrystalline enhancement layer is formed on the surface of a leveling roller; and spot chromium plating and combination hardening are performed. In the method, three steps, namely leveling roller surface nanocrystalline enhancement, spot chromium plating hot spray surface adhesion and surface adhesion chromium combination hardening, are adopted. The surface texture requirements of specific roughness, PCI (Peripheral Component Interconnect) value and the like are met. The method has good binding force between surface spot-plated chromium and a substrate; and the problem of environmental pollution is avoided.
Description
Technical field
The present invention relates to smooth roller process for treating surface, relate in particular to the brilliant strengthening point chromium plating roughing method of smooth roller nano surface.
Background technology
Cold Rolled Sheet Steel with special surface pattern has a wide range of applications at automobile and electrical appliance industry.The texturing Cold Rolled Sheet Steel is to be formed by the smooth rolling system that handle through texturing on the surface, one series surface appearance feature to processing performance influences such as the deep-draw of steel plate, applications greatly, texturing cold-rolled steel sheet value added is high.
Smooth roller texturing technical basis process principle can be divided into three major types: the first, Physical Processing comprises shot-peening texturing technology; The second, fusing, vaporization processing comprise electrical spark texturing technology, laser roughening technology and electron beam texturing technology; Three, electro-chemical machining comprises Pretex texturing technology and ink-jet texturing technology.Document 2007 China Steel nd Annual Meeting collection, contrast in 2007 is summarized.
The shot-peening texturing is the most traditional roughing method, as " Wear ", and 207:34～40,1997; Chinese patent application CN93221264.6, CN97201491.8, U.S. Pat 5643054, the impact material (being generally shot) that utilizes the centrifugal wheel of high speed rotating will have sharp edges, high rigidity quickens to spray to the roll (the about 80m/s of speed) of desiring texturing.Tiny metal particle under roller surface " cutting ".The essence defective of shot-peening texturing (SBT) technology is that its texturing process and result are at random and uneven, uncontrollable and difficult existing." manufacturing technology and lathe " the 5th phase in 2002, adopt the texturing of gas shot-peening, and contrasted the relative merits of different methods.
Electrical spark texturing technical work principle and roughing method, document " Electrical dischargetexturing.Int.J.Mach.Tools Manufact, 1992,32 (1/2): 183～193; With document J.Mater.Process.Technol, 1994,45:207～214; U.S. Pat 20020132050, US5250364.Roll and electrode are immersed in the insulating working fluid, on roll and electrode, apply the pulsed voltage of certain amplitude and frequency.Pulsed voltage makes contrasted between solid dielectric ionization, puncture, forms discharge channel.In passage, positive pole and negative terminal surface become instantaneous thermal source respectively, TRANSIENT HIGH TEMPERATURE (about 20000 ℃) makes metallic substance fusing, vaporization.Just formed a series of galvanic corrosion hole at roller surface.Roller surface often forms white layer and the hardness reduction after the electrical spark texturing, and its investment is relative with equipment running cost higher, and working efficiency is not high, and pollution problem is arranged yet.
Laser roughening is to adopt the high energy pulse laser beam to act on roller surface, makes it heating, fusing and part vaporization.Make molten pool metal to around pile up, produce simultaneously pit in the centre.But the laser roughening technology has the following disadvantages, and efficient is lower, texturing cost height.The pit of laser roughening cold-rolled steel sheet is arranged too neat and is had rule, often can also indistinctly see the formed spiral lines of pit after spraying paint, and has influenced the aesthetic property of the back sheet material that sprays paint.As Chinese patent CN93109710.X, CN00128273.5, CN98242107.9, CN00264774.5 all are the optimization of carrying out on the basis of laser roughening to a certain degree.
The electron beam texturing, document " Iron and Steel Engineer ", 1997 (9): 36～40, U.S. Pat 3941970.For roll also moves vertically at the vacuum chamber internal rotation, back and forth pass through the fixed electron beam gun.High-power electron beam is incident upon roller surface, gives off energy with the form of heat.That part of material that meets with electron beam under sufficiently high temperature just melts and the part evaporation, forms pit.This may be the reliable technique of thin band continuous casting crystallization roller texturing, but the equipment of electron beam texturing is very expensive, and arts demand realizes that in a vacuum this has just limited popularization and practical application.
Pretex texturing skill is a kind of process of electrochemical deposition in essence.U.S. Pat 99367840, US 5789066, and Japanese Patent JP 6315584 rolls are immersed in the electrolytic solution that contains chromium, pass to direct current, and roller surface forms the coating of small chromium sphere, has reached the purpose of texturing roller surface.This texturing technology is also under test, and its working (machining) efficiency is not very high, and because electrochemical reaction takes place, easily causes a large amount of toxic chemical wastes, and environmental pollution is more serious.Patent US 5186981 has adopted the hot dipping dissolution method.
Ink-jet texturing technology, document " 34th mWSP conf.Proc., ISS-AIME ", 1993,30:485～489), U.S. Pat 6555223, Japanese Patent JP 9155403) be with combine with the electro-chemical machining roller texturing technology of a kind of novelty of forming of inkjet technology.At first in computer program, configure the texturing parameter value of desiring to reach, drive printhead photo-resist is printed on roller surface, form a series of photo-resist point at roller surface like this, a utilization and printhead corrosion breaker roll arranged side by side carries out galvanic corrosion then, thereby forms roller surface texturing pattern.But its working (machining) efficiency is not high.
Comprehensive as seen chromium plating is one of the most effective texturing technology, but problem of environmental pollution is crucial at present technology bottle footpath, needs to be resolved hurrily.
Summary of the invention
The object of the present invention is to provide the brilliant strengthening point chromium plating roughing method of a kind of smooth roller nano surface, form nanocrystalline strengthening layer on the surface of smooth roller, and carry out a chromium plating and in conjunction with hardening treatment, reach the purpose that superficial makingss such as specific roughness, Pc value require; And the bonding force of surface point chromium plating of the present invention and matrix is good, does not produce problem of environmental pollution.
For achieving the above object, technical scheme of the present invention is,
The brilliant strengthening point chromium plating roughing method of smooth roller nano surface, it comprises the steps:
1) smooth roller nano surface is brilliant strengthens
Adopt α-Al
2O
3The hard spheroidal particle bombards microcell restrained deformation mechanism at a high speed, will put down
The surface grain refinement of whole roller is to nanometer scale; Wherein, α-Al
2O
3The velocity range of spheroidal particle is:
υ is α-Al in the formula
2O
3The speed of spheroidal particle, unit is m/s, σ
0.2Be the yield strength of smooth roller surfacing, unit is MPa, and σ s is the breaking tenacity of smooth roller surfacing, and unit is MPa, ρ
AlBe α-Al
2O
3The density of spheroidal particle, unit is g/cm
3
2) some chromium plating temperature jeting surface adheres to
Select the spherical chromium metallic particles of different-grain diameter, be heated to specific temperature province, adopt the smooth roller surface of gas temperature spraying technique after nanocrystalline processing to carry out adhesion deposition; Wherein, the temperature range of chromium metallic particles heating is: 0.5T
m≤ T
Cr≤ 0.7T
m, T in the formula
mBe the melting point metal of chromium, unit is ℃ TC
rBe the temperature of chromium metallic particles, unit is ℃;
3) surface adhesion chromium is in conjunction with hardening treatment
Adopt the high-frequency electromagnetic induction heating technique to heat, and then carry out high speed and quench.
Further, described α-Al
2O
3Be spheroidal particle, alumina particle is simple α phase.
Described α-Al
2O
3Be spheroidal particle, the scope of particle diameter is: 15Ra≤d
A1≤ 50Ra, Ra is the final roughness that requires of smooth roller in the formula, unit is μ m, d
AlBe α-Al
2O
3Be the diameter of spheroidal particle, unit is μ m.
Described α-Al
2O
3The velocity range of spheroidal particle is:
Unit is m/s.
Described α-Al
2O
3Spheroidal particle is 300%-500% to the bombardment density on smooth roller surface.Bombardment density is defined as bombardment at the lip-deep α-Al of the smooth roller of unit
2O
3The sectional area summation of spheroidal particle.
Above-mentioned steps 2) in, described chromium metallic particles is a spheroidal particle, and the scope of chromium metallic particles particle diameter is: 5Ra≤d
Cr≤ 8.5Ra, Ra is the final roughness that requires of smooth roller in the formula, unit is μ m, d
CrBe the diameter of spherical chromium metallic particles, unit is μ m.
Above-mentioned steps 2) in, the temperature range that high pressure compressed gas is heated is: T
Cr≤≤T
Gas≤ 0.75T
m, T in the formula
mBe the melting point metal of chromium, unit is ℃ T
CrBe the temperature of chromium metallic particles, T
GasBe the temperature of high-speed gas, unit is ℃.
Above-mentioned steps 2) in, the speed of spherical chromium metallic particles is:
υ in the formula
CrBe the speed of chromium metallic particles, unit is m/s, σ
sBe the breaking tenacity of smooth roller surfacing, unit is MPa, ρ
CrBe the density of chromium metallic particles, unit is g/cm
3
Above-mentioned steps 2) in, the adhesion density of spherical chromium metallic particles is: 1.1P
CI≤ N≤3.5P
CIP in the formula
CIBe smooth roll surface roughness requirement, N is the adhesion density of chromium metallic particles, and it is defined as adherent chromium metallic particles number on every foot length.
Above-mentioned steps 3) in, the frequency of high-frequency electromagnetic induction heating is greater than 350kHz; The surperficial Heating temperature of smooth roller is 900 ℃-950 ℃, is heated to time of 900 ℃-950 ℃ less than 8s from room temperature; Behind 900 ℃-950 ℃ insulation 2s-3s, be cooled to below 50 ℃, speed of cooling is greater than 280 ℃/s.
The purpose that the smooth roller nano surface of the present invention product are strengthened is: nanometer scale is arrived in the grain refining of smooth roller upper layer, utilize the refined crystalline strengthening effect to improve the hardness of smooth roller upper layer, be complementary with the hard plating of upper layer plating, eliminate the material surface performance sudden change that causes after the chromium plating.Under normal conditions, electroplating Cr onto surface at first will plate one deck nickel earlier on the surface of ferrous materials, and then chromium plating.Hardness transition by nickel reaches the effect that reduces the performance sudden change, but can not eliminate fully.All exist the sudden change of performance between material matrix and nickel coating and nickel coating and the chromium layer.The brilliant intensive treatment of nano surface of the present invention is that the coarse-grain by body material carries out the transition to the nanocrystalline of upper layer gradually, does not have tangible interface.Therefore performance does not have the sudden change existence.
Nano surface is brilliant to be strengthened, adopt high pressure compressed gas to drive the surface that the miniature spherical hard particles bombards smooth roller at a high speed, make smooth roller surfacing surface structure produce the intensive viscous deformation, make the material surface layer tissue refine to nanometer scale, reach the brilliant effect of strengthening of nano surface.Preferred α-the Al of bombardment miniature spherical hard particles
2O
3The hard spheroidal particle.
After the nano surface intensive treatment, the surface structure of smooth roller is characterized as: the grain refining of upper layer is nanocrystalline, and the progressively entad open grain structure transition of portion.Do not have tangible interface to exist, the hardness of nano surface crystalline substance is very high.
Beneficial effect of the present invention:
1, the present invention utilizes specific nanocrystalline ultra-fine brilliant strengthening mechanism, eliminates the mechanical property difference between surface matrix and the surperficial chromium metallic particles; Matrix is not produced damage simultaneously.
2, the present invention adopts the smooth roller surface of high-speed gas temperature spraying technique after nanocrystalline processing to carry out adhesion deposition, because the sticking temperature of chromium metallic particles is low in the technology, so can not produce thermal damage to matrix, the specific speed of particle has guaranteed effective the combining of chromium metallic particles with crystallization roller matrix, bonding strength height simultaneously.
3, the chromium metallic particles that adopts of the present invention can prescreening, requires to keep accurately consistent, technology controlling and process precision height, good stability with final roughness.
4, the special surface effect of high-frequency induction heating processing and utilizing high frequency of the present invention, crystal roller surface temperature vertex all concentrates on the chromium metallic particles, eliminate the stress that combines between chromium metallic particles and the matrix, cooling has formed the high speed quenching effect of self at a high speed.The hardness of chromium metallic particles improves once more, and significantly improve work-ing life.
5, the present invention has used the chromium metal, but does not have conventional electrochemical plating to generate harmful electroplate liquid, does not produce environmental pollution.
6, the technology of the present invention shows by examine for wear, and not adopting the shot-peening of present technique and the theoretical steel transportation amount of ruled surface texturing is 150 tons, and adopting the theoretical steel transportation amount of the surface texturing layer of present technique is 3000 tons, and increase substantially work-ing life.
Description of drawings
Fig. 1 is the smooth roller surface microscopic topographic of texturing technology of the present invention.
Embodiment
Embodiment 1
Experiment is (massfraction %) with the chemical ingredients of 3Cr material, and C 0.78%, and Si 0.43%, and Mn 0.45%, and Cr 2.98%, and Mo 0.66%, and V 0.2%, and Ni 0.35%.Achieving the goal is that Ra is 4.25 μ m, and the PC value is greater than 50/cm.
In the laboratory, utilize smooth roll material to prepare each car of φ 100 * 150 two ends and carefully carry out the texturing check as the simulating piece of smooth roller for the small specimen of φ 25 * 25.At first carry out second heat treatment and reach smooth roller and organize requirement in using, carry out texturing of the present invention then and handle.
The first step is with α-Al
2O
3The hard spheroidal particle bombards the surface microstructure of the smooth roller of nano level refinement at a high speed, concrete parameter: α-Al
2O
3Be spheroidal particle, median size is 200 μ m, and average grain speed is 600m/s, and bombardment density is 300%.
In second step, temperature is sprayed spherical chromium surface of metal particles adhesion process.Concrete parameter is: the chromium metallic particles is a spheroidal particle, and chromium metallic particles median size is: 34.5 μ m.The chromium metallic particles is heated to 700 ℃, and the high pressure compressed gas Heating temperature is 750 ℃.The V-bar of chromium metallic particles is: 650m/s.The adhesion density of chromium metallic particles is: 85/cm.
In the 3rd step, surface adhesion chromium is in conjunction with hardening treatment.Adopt the concrete parameter of high-frequency electromagnetic induction heating technique to be: frequency 450kHz, surperficial Heating temperature is 900 ℃, 330 ℃/s of rate of heating.Behind the insulation 2s, water-cooled is to room temperature.
Actual effect is for being that Ra is 4.45 μ m, and the PC value reaches the requirement of texturing greater than 60/cm.
Embodiment 2
Experiment is (massfraction %) with the chemical ingredients of 5Cr material, and C 0.87%, and Si 0.45%, and Mn 0.43%, and Cr 4.98%, and Mo 0.57%, and V 0.21%, and Ni 0.21%.Achieving the goal is that Ra is 2.5 μ m, and the PC value is greater than 70/cm.
In the laboratory, utilize and scrap smooth roller and prepare each car of φ 100 * 150 two ends and carefully carry out the texturing check as the simulating piece of smooth roller for the small specimen of φ 25 * 25.At first carry out modified thermal treatment and reach smooth roller and organize requirement in using, carry out texturing of the present invention then and handle.
The first step is with α-Al
2O
3The hard spheroidal particle bombards the surface microstructure of the smooth roller of nano level refinement at a high speed, concrete parameter: α-Al
2O
3Be spheroidal particle, median size is 37.5 μ m, and average grain speed is 960m/s, and bombardment density is 300%.
In second step, temperature is sprayed spherical chromium surface of metal particles adhesion process.Concrete parameter is: the chromium metallic particles is a spheroidal particle, and chromium metallic particles median size is: 12.5 μ m.The chromium metallic particles is heated to 700 ℃, and the high pressure compressed gas Heating temperature is 750 ℃.The average grain speed of chromium metallic particles is 785m/s.The adhesion density of chromium metallic particles is: 85/cm.
In the 3rd step, surface adhesion chromium is in conjunction with hardening treatment.Adopt the concrete parameter of high-frequency electromagnetic induction heating technique to be: frequency 450kHz, surperficial Heating temperature is 900 ℃, 300 ℃/s of rate of heating.Behind the insulation 2s, water-cooled is to room temperature.
Actual effect is for being that Ra is 2.45 μ m, and the PC value reaches the requirement of texturing greater than 75/cm.
Embodiment 3
Experiment is (massfraction %) with the chemical ingredients of 5Cr material, and C 0.87%, and Si 0.45%, and Mn 0.43%, and Cr 4.98%, and Mo 0.57%, and V 0.21%, and Ni 0.21%.Achieving the goal is that Ra is 3.5 μ m, and the PC value is greater than 50/cm.
In the laboratory, utilize and scrap smooth roller and prepare each car of φ 100 * 150 two ends and carefully carry out the texturing check as the simulating piece of smooth roller for the small specimen of φ 25 * 25.At first carry out modified thermal treatment and reach smooth roller and organize requirement in using, carry out texturing of the present invention then and handle.
The first step is with α-Al
2O
3The hard spheroidal particle bombards the surface microstructure of the smooth roller of nano level refinement at a high speed, concrete parameter: α-Al
2O
3Be spheroidal particle, median size is 58.5 μ m, and average grain speed is 850m/s, and bombardment density is 300%.
In second step, temperature is sprayed spherical chromium surface of metal particles adhesion process.Concrete parameter is: the chromium metallic particles is a spheroidal particle, and chromium metallic particles median size is: 20.5 μ m.The chromium metallic particles is heated to 700 ℃, and the high pressure compressed gas Heating temperature is 750 ℃.The average grain speed of chromium metallic particles is 800m/s.The adhesion density of chromium metallic particles is: 85/cm.
In the 3rd step, surface adhesion chromium is in conjunction with hardening treatment.Adopt the concrete parameter of high-frequency electromagnetic induction heating technique to be: frequency 500kHz, surperficial Heating temperature is 900 ℃, 350 ℃/s of rate of heating.Behind the insulation 2s, water-cooled is to room temperature.
Actual effect is for being that Ra is 3.46 μ m, and the PC value reaches the requirement of texturing greater than 70/cm.
Embodiment 4
Experiment is (massfraction %) with the chemical ingredients of 5Cr material, and C 0.87%, and Si 0.45%, and Mn 0.43%, and Cr 4.98%, and Mo 0.57%, and V 0.21%, and Ni 0.21%.Achieving the goal is that Ra is 4.5 μ m, and the PC value is greater than 50/cm.
In the laboratory, utilize and scrap smooth roller and prepare each car of φ 100 * 150 two ends and carefully carry out the texturing check as the simulating piece of smooth roller for the small specimen of φ φ 25 * 25.At first carry out modified thermal treatment and reach smooth roller and organize requirement in using, carry out texturing of the present invention then and handle.
The first step is with α-Al
2O
3The hard spheroidal particle bombards the surface microstructure of the smooth roller of nano level refinement at a high speed, concrete parameter: α-Al
2O
3Be spheroidal particle, median size is 85 μ m, and average grain speed is 880m/s, and bombardment density is 300%.
In second step, temperature is sprayed spherical chromium surface of metal particles adhesion process.Concrete parameter is: the chromium metallic particles is a spheroidal particle, and chromium metallic particles median size is: 28.5 μ m.The chromium metallic particles is heated to 700 ℃, and the high pressure compressed gas Heating temperature is 750 ℃.The average grain speed of chromium metallic particles is 760m/s.The adhesion density of chromium metallic particles is: 80/cm.
In the 3rd step, surface adhesion chromium is in conjunction with hardening treatment.Adopt the concrete parameter of high-frequency electromagnetic induction heating technique to be: frequency 1000kHz, surperficial Heating temperature is 920 ℃, 400 ℃/s of rate of heating.Behind the insulation 2s, water-cooled is to room temperature.
Actual effect is for being that Ra is 4.63 μ m, and the PC value reaches the requirement of texturing greater than 55/cm.
Embodiment 5
Rapid steel system, chemical ingredients are (massfraction): C 2.28%, and W 4.66%, and Mo 4.79%, and V 6.05%, and Cr 7.7%, and Mn 0.5%, and Si 0.8%, and Ni 0.6%, and S 0.017%, and P 0.02%.Collars adopts horizontal centrifugal casting casting, original thermal treatment process: 1000 ℃ are incubated 4h down, and air cooling is to room temperature, and 550 tempering are three times then, each 1h.Achieving the goal is that Ra is 2.55 μ m, and the PC value is greater than 70/cm.
In the laboratory, utilize and scrap small specimen that smooth roll sleeve prepares φ 25 * 150 and carry out the texturing check as the simulating piece of smooth roller.Because the tissue of rapid steel system roller shell is consistent, does not heat-treat and directly carry out texturing processing of the present invention.
The first step is with α-Al
2O
3The hard spheroidal particle bombards the surface microstructure of the smooth roller of nano level refinement at a high speed, concrete parameter: α-Al
2O
3Be spheroidal particle, median size is 100 μ m, and average grain speed is 1000m/s, and bombardment density is 500%.
In second step, temperature is sprayed spherical chromium surface of metal particles adhesion process.Concrete parameter is: the chromium metallic particles is a spheroidal particle, and chromium metallic particles median size is: 15.5 μ m.The chromium metallic particles is heated to 730 ℃, and the high pressure compressed gas Heating temperature is 850 ℃.The V-bar of chromium metallic particles is: 825m/s.The adhesion density of chromium metallic particles is: 85/cm.
In the 3rd step, surface adhesion chromium is in conjunction with hardening treatment.Adopt the concrete parameter of high-frequency electromagnetic induction heating technique to be: frequency 550kHz, surperficial Heating temperature is 950 ℃, 350 ℃/s of rate of heating.Behind the insulation 2s, compressed nitrogen is cooled to room temperature.
Actual effect is for being that Ra is 2.58 μ m, and PC value 80/cm reaches the requirement of texturing.
Claims (10)
1. the brilliant strengthening point chromium plating roughing method of smooth roller nano surface, it comprises the steps:
1) smooth roller nano surface is brilliant strengthens
Adopt α-Al
2O
3The hard spheroidal particle bombards microcell restrained deformation mechanism at a high speed, with the surface grain refinement of smooth roller to nanometer scale; Wherein, α-Al
2O
3The velocity range of spheroidal particle is:
υ is α-Al in the formula
2O
3The speed of spheroidal particle,
Unit is m/s, σ
0.2Be the yield strength of smooth roller surfacing, unit is MPa, σ
sBe the breaking tenacity of smooth roller surfacing, unit is MPa, ρ
A1Be α-Al
2O
3The density of spheroidal particle, unit is g/cm
3
2) some chromium plating temperature jeting surface adheres to
Select the spherical chromium metallic particles of different-grain diameter, be heated to specific temperature province, adopt the smooth roller surface of gas temperature spraying technique after nanocrystalline processing to carry out adhesion deposition; Wherein, the temperature range of chromium metallic particles heating is: 0.5T
m≤ T
Cr≤ 0.7T
m, T in the formula
mBe the melting point metal of chromium, unit is ℃ T
CrBe the temperature of chromium metallic particles, unit is ℃;
3) surface adhesion chromium is in conjunction with hardening treatment
Adopt the high-frequency electromagnetic induction heating technique to heat, and then carry out high speed and quench.
2. the brilliant strengthening point chromium plating roughing method of smooth roller nano surface as claimed in claim 1 is characterized in that: described α-Al
2O
3Be spheroidal particle, alumina particle is simple α phase.
3. the brilliant strengthening point chromium plating roughing method of smooth roller nano surface as claimed in claim 1 or 2 is characterized in that: described α-Al
2O
3Be spheroidal particle, the scope of particle diameter is: 15Ra≤d
A1≤ 50Ra, Ra is the final roughness that requires of smooth roller in the formula, unit is μ m, d
A1Be α-Al
2O
3Be the diameter of spheroidal particle, unit is μ m.
4. as claim 1 or the brilliant strengthening point chromium plating roughing method of 2 or 3 described smooth roller nano surfaces, it is characterized in that: described α-Al
2O
3The velocity range of spheroidal particle is:
Unit is m/s.
5. as the brilliant strengthening point chromium plating roughing method of any one described smooth roller nano surface in the claim 1 to 4, it is characterized in that: described α-Al
2O
3Spheroidal particle is 300%-500% to the bombardment density on smooth roller surface.
6. the brilliant strengthening point chromium plating roughing method of smooth roller nano surface as claimed in claim 1 is characterized in that: step 2) described chromium metallic particles is spheroidal particle, the scope of chromium metallic particles particle diameter is: 5Ra≤d
Cr≤ 8.5Ra, Ra is the final roughness that requires of smooth roller in the formula, unit is μ m, d
CrBe the diameter of spherical chromium metallic particles, unit is μ m.
7. the brilliant strengthening point chromium plating roughing method of smooth roller nano surface as claimed in claim 1 is characterized in that: step 2) in, the temperature range that high pressure compressed gas is heated is: T
Cr≤ T
Gas≤ 0.75T
m, T in the formula
mBe the melting point metal of chromium, unit is ℃ T
CrBe the temperature of chromium metallic particles, T
GasBe the temperature of high-speed gas, unit is ℃.
8. as claim 1 or the brilliant strengthening point chromium plating roughing method of 6 described smooth roller nano surfaces, it is characterized in that: step 2) in, the speed of chromium metallic particles is:
υ in the formula
CrBe the speed of chromium metallic particles, unit is m/s, σ
sBe the breaking tenacity of smooth roller surfacing, unit is MPa, ρ
CrBe the density of chromium metallic particles, unit is g/cm
3
9. as claim 1 or the brilliant strengthening point chromium plating roughing method of 6 or 8 described smooth roller nano surfaces, it is characterized in that: the adhesion density of chromium metallic particles is: 1.1P
CI≤ N≤3.5P
CI, P in the formula
CIBe smooth roll surface roughness requirement, N is the adhesion density of chromium metallic particles.
10. the brilliant strengthening point chromium plating roughing method of smooth roller nano surface as claimed in claim 1, it is characterized in that: above-mentioned steps 3) frequency of medium-high frequency electromagnetic induction heating is greater than 350kHz; The surperficial Heating temperature of smooth roller is 900 ℃-950 ℃, is heated to time of 900 ℃-950 ℃ less than 8s from room temperature; Behind 900 ℃-950 ℃ insulation 2s-3s, be cooled to below 50 ℃, speed of cooling is greater than 280 ℃/s.
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| CN103419137A (en) * | 2012-05-25 | 2013-12-04 | 宝山钢铁股份有限公司 | Roller surface strengthening and roughness controlling method |
| CN103949601A (en) * | 2014-04-30 | 2014-07-30 | 宝山钢铁股份有限公司 | Preparation method for thin-strip casting crystallization roller surface appearance |
| CN114296197A (en) * | 2021-12-31 | 2022-04-08 | 上海网讯新材料科技股份有限公司 | Composite armor structure and optical fiber cable |
| CN114433624A (en) * | 2022-01-21 | 2022-05-06 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Frosted surface stainless steel cold rolling production method |
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| US5789066A (en) * | 1994-09-16 | 1998-08-04 | Sidmar N.V. | Method and device for manufacturing cold rolled metal sheets or strips and metal sheets or strips obtained |
| CN2348940Y (en) * | 1998-10-16 | 1999-11-17 | 武汉钢铁(集团)公司 | Diffuse reflection resistant automatic projector for laser roller surface roughening |
| CN101003126A (en) * | 2006-01-18 | 2007-07-25 | 宝山钢铁股份有限公司 | Method for coarsening surface by erosion of hard grains in high speed |
| CN101660033A (en) * | 2008-08-27 | 2010-03-03 | 宝山钢铁股份有限公司 | Method for nano reconstruction of surface texture of metal roller |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103419137A (en) * | 2012-05-25 | 2013-12-04 | 宝山钢铁股份有限公司 | Roller surface strengthening and roughness controlling method |
| CN103419137B (en) * | 2012-05-25 | 2015-10-28 | 宝山钢铁股份有限公司 | A kind of roller surface hardening and roughness control method |
| CN103949601A (en) * | 2014-04-30 | 2014-07-30 | 宝山钢铁股份有限公司 | Preparation method for thin-strip casting crystallization roller surface appearance |
| CN114296197A (en) * | 2021-12-31 | 2022-04-08 | 上海网讯新材料科技股份有限公司 | Composite armor structure and optical fiber cable |
| CN114433624A (en) * | 2022-01-21 | 2022-05-06 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Frosted surface stainless steel cold rolling production method |
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| CN102296262B (en) | 2013-04-24 |
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