CN108220952A - A kind of hydraulic support column manufactured using superelevation rate laser cladding method - Google Patents
A kind of hydraulic support column manufactured using superelevation rate laser cladding method Download PDFInfo
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- CN108220952A CN108220952A CN201711406964.6A CN201711406964A CN108220952A CN 108220952 A CN108220952 A CN 108220952A CN 201711406964 A CN201711406964 A CN 201711406964A CN 108220952 A CN108220952 A CN 108220952A
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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
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
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Abstract
The present invention provides a kind of hydraulic support columns manufactured using superelevation rate laser cladding method.Column material of main part is 27SiMn, is most vulnerable to the movable post of corrosive medium erosion in column and middle cylinder outer surface prepares austenitic stainless steel corrosion-resistant finishes using superelevation rate laser cladding method.Column corrosion resistance and service life using this method manufacture are more than the plating column that uses of the current country, and the problem of overcome the coating poor flatness caused by conventional laser cladding method, can carry out large-scale batch production.
Description
Technical field
The present invention relates to it is a kind of using laser cladding method manufacture Cylinder Parts more particularly to it is a kind of use high-speed
The hydraulic support column of laser cladding method manufacture, belongs to laser gain material manufacturing field.
Background technology
Hydraulic support column is the important equipment of mining machinery, bears the load from top plate during being on active service, is liquid
The main load bearing component of stent is pressed, therefore it is required that column has enough intensity and service life, support is provided for working face
Protection and safety guarantee.
Hydraulic support column works in acid, alkaline corrosion environment for a long time, especially the movable post of column and middle cylinder outer surface
It is exposed in external environment and subjects corrosion, wear and collision.Country's hydraulic support column uses 27SiMn material systems at present
It makes, and in column movable post and middle cylinder surfaces using electroplating technology, using copper-tin alloy as prime coat, thickness of coating is 20~35 μ
M, then plating hard chromium on surface, thickness are 30~45 μm.
It is found by the fault statistics of the column to problem occurs：The failure of occurrence probability maximum is that the electroplating surface of column goes out
Now damage.There are mainly two types of its reasons：The first is that coating surface absorption Korrosionsmedium penetrates into coating bottom shape under mine
Justify into corrosion, erosion accumulation causes to blister；It is for second that the solid installation of avalanche causes craze of coating and peeling.
Using laser melting and coating technique, heated by laser by powder of stainless steel cladding in 27SiMn column matrix surfaces, shape
Into the fine and close stainless steel coating for column matrix being in metallurgical binding, failure caused by the first above-mentioned reason can be avoided.It is and stainless
Steel coating have toughness more better than chrome plating, will not occurrence of large-area crack and flake off phenomenon.But traditional laser melting coating speed
Rate is relatively low, and coating roughness is larger after cladding and smoothness is poor.
Invention content
The present invention is applied for the column of above-mentioned column cracky and conventional laser cladding method production with electroplated coating
Bed roughness is larger and the problem of smoothness is poor, using the superelevation rate laser cladding method of coaxial powder-feeding formula, provides one kind
Service life is longer, coating smooth controllable, even compact, the better hydraulic support column of conjugation.It should be noted that this hair
Ultrahigh speed in bright is for existing laser melting coating speed, and it is big which specifically refers to laser scanning linear velocity
In equal to 20m/min.
The particular content of technical solution of the present invention is：
A kind of hydraulic support column manufactured using superelevation rate laser cladding method, it is characterised in that the hydraulic support column packet
Middle cylinder, movable post, bottom valve and outer shell are included, and the movable post and middle cylinder are prepared by following methods：
（1）Select powder of stainless steel and to powder sieving processing, then the vacuum preservation after drying and processing, spare；
（2）Movable post or middle cylinder matrix that the trade mark is 27SiMn are fixed on lathe, size to diameter is less than finished diameter
0.2~0.6mm checks matrix surface, it is ensured that any surface finish zero defect；
（3）By movable post or middle cylinder matrix clamping on the swing mechanism of laser cladding equipment, hot spot is adjusted（Laser spot）And powder
Spot（Powder of stainless steel convergent point）With respect to the position above outer surface of matrix clad can fusion, and ultrahigh speed is set as the case may be
Rate laser cladding technological parameter；
（4）Using coaxial powder-feeding ultrahigh speed laser cladding method, step is used（3）Set technique is by step（1）Gained
Powder of stainless steel cladding obtains the coating that thickness is 0.15~0.45mm to matrix surface；
（5）Laser power is reduced under vermicelli part of not bothering to see me out, keeps other technological parameters constant, laser weight is carried out to cladding coating
It is molten, obtain smooth surface light, the coating without pit and crackle；
（6）Middle cylinder, movable post and bottom valve and outer shell are assembled, obtain complete hydraulic support column.
The ultrahigh speed laser melting and coating technique of the present invention is a kind of novel, efficient laser melting and coating technique, and laser beam lacks portion
Energy is divided to act on basis material and forms shallower molten bath, and most of energy has been acted on dusty material, and powder is made to exist
Temperature rises to fusing point and melts before into molten bath, is combined in droplets with basis material, then is cooled down by matrix itself
Solidification.Due to not needing to that deeper molten bath is formed in matrix surface, therefore compared with conventional laser melting and coating technique, laser energy consumption is apparent
Decline, working efficiency also improves dozens or even hundreds of times.The high solidification rate of powder molten drop, makes coating in preparation process
Substantially it is not oxidized, it ensure that the performance of coating.
According to a further aspect of the invention, a kind of hydraulic support manufactured using superelevation rate laser cladding method is additionally provided
Column, the movable post and middle cylinder of the column are prepared by following methods：
（1）It selects powder of stainless steel and to powder sieving processing, obtains particle size range and be more than 90% for 15~50 μm, sphericity
Powder, then by 120~150 DEG C of holding temperature, 1.5~3.5h of soaking time drying and processing after vacuum preservation, it is spare；
（2）Movable post or middle cylinder matrix that the trade mark is 27SiMn are fixed on lathe, size to diameter is less than finished diameter
0.2~0.6mm checks matrix surface, it is ensured that any surface finish zero defect；
（3）By movable post or middle cylinder matrix clamping on the swing mechanism of laser cladding equipment, and hot spot and amyloid plaque are adjusted with respect to base
The position of external surface clad can fusion：It is required that hot spot is overlapped with amyloid plaque, away from 0.5~2mm of clad can fusion.And it sets as the case may be
Determine laser cladding technological parameter；
（4）Using coaxial powder-feeding ultrahigh speed laser cladding method, step is used（3）Set technique is by step（1）Gained
Powder of stainless steel cladding obtains the coating that thickness is 0.15~0.45mm to matrix surface；
（5）Laser power is reduced under vermicelli part of not bothering to see me out, keeps other technological parameters constant, laser weight is carried out to cladding coating
It is molten, obtain smooth surface light, the coating without pit and crackle；
（6）By middle cylinder or movable post clamping on grinding machine, it is refined to predetermined size and precision；
（7）By middle cylinder, movable post and bottom valve, outer shell etc., other parts assemble, and obtain complete hydraulic support column；
The column advantage that the present invention is manufactured relative to conventional laser cladding method is：Cladding rate is high, can significantly improve life
Produce efficiency；Coating surface flatness after laser remolten is higher than traditional cladding coating flatness, and coating layer thickness control is more smart
Really, coating is smooth, even compact and conjugation are more preferable, and production cost can simultaneously be reduced by improving production efficiency；Smaller heat is defeated
The deflection of movable post or middle cylinder can be reduced by entering.
Description of the drawings
Fig. 1 is hydraulic support column structure diagram of the present invention.
In Fig. 1,1- bottom valves；2- outer shells；3- middle cylinders；4- movable posts；5- guide sleeves；6- card keys；7- baffle rings.
Fig. 2 is hydraulic support column movable post cladding region Longitudinal cross section schematic described in embodiment.
In Fig. 2,8- austenite stainless steel coatings；9-27SiMn movable post matrixes.
Specific embodiment
The present invention will be further described With reference to embodiment.Specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
Embodiment 1
A kind of hydraulic support column manufactured using superelevation rate laser cladding method is provided in the present embodiment.Advantageously, join
See Fig. 1-2, which includes middle cylinder 3, movable post 4, bottom valve 1 and outer shell 2, and the movable post and middle cylinder pass through following methods
It prepares：
（1）Select powder of stainless steel and to powder sieving processing, then the vacuum preservation after drying and processing, spare；
（2）Movable post or middle cylinder matrix that the trade mark is 27SiMn are fixed on lathe, size to diameter is less than finished diameter
0.2~0.6mm checks matrix surface, it is ensured that any surface finish zero defect；
（3）By movable post or middle cylinder matrix clamping on the swing mechanism of laser cladding equipment, hot spot is adjusted（Laser spot）And powder
Spot（Powder of stainless steel convergent point）With respect to the position above outer surface of matrix clad can fusion, and ultrahigh speed is set as the case may be
Rate laser cladding technological parameter；
（4）Using coaxial powder-feeding ultrahigh speed laser cladding method, step is used（3）Set technique is by step（1）Gained
Powder of stainless steel cladding obtains the coating that thickness is 0.15~0.45mm to matrix surface；
（5）Laser power is reduced under vermicelli part of not bothering to see me out, keeps other technological parameters constant, laser weight is carried out to cladding coating
It is molten, obtain smooth surface light, the coating without pit and crackle；
（6）Middle cylinder, movable post and bottom valve and outer shell are assembled, obtain complete hydraulic support column.
Preferably, the step（1）In, the powder of stainless steel requires be particle size range for 15~50 μm, sphericity it is big
In 90%.
It is understood that the small part energy of laser acts on matrix surface and forms shallower molten bath in the present embodiment,
Laser major part energy is acted on the powder of stainless steel above matrix；Powder of stainless steel temperature before molten bath is entered rises to molten
It puts and melts, combined in droplets with matrix.Compared with traditional handicraft, powder of stainless steel dilution rate of the invention is low, applies
Composition of layer is influenced smaller, final coating surface more flat smooth, even compact and conjugation higher by basis material.
Preferably, which includes further including guide sleeve 5, card key 6 and baffle ring 7.
Preferably, the step（1）In, the technique of the drying and processing is to protect powder in the range of 120~150 DEG C
After 1.5~3.5h of temperature and cool to room temperature with the furnace.
Preferably, the step（3）In, the hot spot and amyloid plaque relative to column matrix clad can fusion status requirement light
Spot is overlapped with amyloid plaque in the position higher than 0.5~2mm of clad can fusion.
Preferably, the step（3）In, superelevation rate laser cladding technological parameter is：Spot diameter be 1~3mm, column
Linear resonance surface velocity, that is, cladding rate is 20~75m/min, and 0.2~0.4mm of feed of every rotation, laser power is 1100~1600W,
Powder feeding rate is 5~25g/min.
Preferably, step（5）It is middle that laser power is reduced to 800~1500KW.
Embodiment 2
The embodiment additionally provides a kind of hydraulic support column manufactured using superelevation rate laser cladding method, the work of the column
Column and middle cylinder are prepared by following methods：
（1）It selects powder of stainless steel and to powder sieving processing, obtains particle size range and be more than 90% for 15~50 μm, sphericity
Powder, then by 120~150 DEG C of holding temperature, 1.5~3.5h of soaking time drying and processing after vacuum preservation, it is spare；
（2）Movable post or middle cylinder matrix that the trade mark is 27SiMn are fixed on lathe, size to diameter is less than finished diameter
0.2~0.6mm checks matrix surface, it is ensured that any surface finish zero defect；
（3）By movable post or middle cylinder matrix clamping on the swing mechanism of laser cladding equipment, and hot spot and amyloid plaque are adjusted with respect to base
The position of external surface clad can fusion：It is required that hot spot is overlapped with amyloid plaque, away from 0.5~2mm of clad can fusion.And it sets as the case may be
Determine laser cladding technological parameter；
（4）Using coaxial powder-feeding ultrahigh speed laser cladding method, step is used（3）Set technique is by step（1）Gained
Powder of stainless steel cladding obtains the coating that thickness is 0.15~0.45mm to matrix surface；
（5）Laser power is reduced under vermicelli part of not bothering to see me out, keeps other technological parameters constant, laser weight is carried out to cladding coating
It is molten, obtain smooth surface light, the coating without pit and crackle；
（6）By middle cylinder or movable post clamping on grinding machine, it is refined to predetermined size and precision；
（7）By middle cylinder, movable post and bottom valve, outer shell etc., other parts assemble, and obtain complete hydraulic support column.
Embodiment 3
Referring to Fig. 2, a kind of hydraulic support column of a diameter of Φ 92mm of movable post including 27SiMn movable posts matrix 9 and is incorporated in base
Austenite stainless steel coating 8 on body 9.Wherein, movable post basis material is 27SiMn, is processed and made by following processing step
It makes：Movable post matrix is processed with lathe turning, is machined to be less than finished diameter 0.4mm；It is melted with the superelevation rate laser of coaxial powder-feeding
Coating method is in matrix surface cladding 316L austenite stainless steel coatings；It is completely not molten using laser remolten method melt painting surface
The powder of change ensures Coating Surface Roughness.
Its specific process step is：
（1）To the screening of 316L austenitic stainless steel powers and purified treatment, obtain particle size range and be more than for 15~45 μm, sphericity
90% powder, then by 130 DEG C of holding temperature, soaking time 2h drying and processing after vacuum preservation, it is spare；
（2）By the trade mark be 27SiMn movable post matrix be fixed on lathe, size to diameter be less than finished diameter 0.2~
0.6mm checks matrix surface, it is ensured that any surface finish zero defect；
（3）By surface is smooth, the column matrix clamping of zero defect, diameter less than finished diameter 0.4mm is on numerically-controlled machine tool, with nothing
Water-ethanol wiping matrix treats cladding surface, and adjust the position of hot spot and the opposed base for post body clad can fusion of amyloid plaque：Make hot spot with
Amyloid plaque is overlapped in the position higher than clad can 1mm fusion.The technological parameter of superelevation rate laser melting coating is set, concrete technology is：Light
Spot diameter is 1.1mm, and leg surface linear velocity, that is, cladding rate is 25m/min, feed of every rotation 0.30mm, and laser power is
1350W, powder feeding rate 20g/min；
（4）Using coaxial powder-feeding ultrahigh speed laser cladding method, step is used（3）The technique is by step（1）Gained is not
Powdered steel cladding become rusty to column matrix surface, obtains the corrosion-resistant finishes that thickness is 0.35mm；
（5）Not powder feeding carries out laser remolten to cladding coating surface, keeps column linear velocity 50m/min, feed of every rotation
0.25mm and focal position of laser are constant, and laser power is reduced to 1350W carries out laser remolten to cladding coating, obtains surface
The smooth bright, coating without pit and crackle；
（6）By movable post and bottom valve, outer shell, middle cylinder etc., other parts assemble, and obtain complete hydraulic support column.
The present invention prepares corrosion-resistant finishes using superelevation rate laser melting and coating technique on movable post matrix, and coating does not occur gas
The defects of hole, crackle, movable post corrosion resistance and service life with austenitic stainless steel corrosion-resistant finishes are superior to electrodeposited chromium
Movable post.Coating surface flatness after laser remolten of the present invention is higher than traditional cladding coating flatness, and coating layer thickness control
System is more accurate, and coating is smooth, even compact and conjugation are more preferable, and production cost can simultaneously be reduced by improving production efficiency；Smaller
Heat input can reduce the deflection of movable post or middle cylinder, properties of product are more superior.
Claims (6)
- A kind of 1. hydraulic support column manufactured using superelevation rate laser cladding method, it is characterised in that the hydraulic support column Including middle cylinder, movable post, bottom valve and outer shell, and the movable post and middle cylinder are prepared by following methods：（1）Select powder of stainless steel and to powder sieving processing, then the vacuum preservation after drying and processing, spare；（2）Movable post or middle cylinder matrix that the trade mark is 27SiMn are fixed on lathe, size to diameter is less than finished diameter 0.2~0.6mm checks matrix surface, it is ensured that any surface finish zero defect；（3）By movable post or middle cylinder matrix clamping on the swing mechanism of laser cladding equipment, hot spot is adjusted（Laser spot）And powder Spot（Powder of stainless steel convergent point）With respect to the position above outer surface of matrix clad can fusion, and ultrahigh speed is set as the case may be Rate laser cladding technological parameter；（4）Using coaxial powder-feeding ultrahigh speed laser cladding method, step is used（3）Set technique is by step（1）Gained Powder of stainless steel cladding obtains the coating that thickness is 0.15~0.45mm to matrix surface；（5）Laser power is reduced under vermicelli part of not bothering to see me out, keeps other technological parameters constant, laser weight is carried out to cladding coating It is molten, obtain smooth surface light, the coating without pit and crackle；（6）Middle cylinder, movable post and bottom valve and outer shell are assembled, obtain complete hydraulic support column.
- 2. hydraulic support column according to claim 1, which is characterized in that the step（1）In, the powder of stainless steel It is required that it is that particle size range is more than 90% for 15~50 μm, sphericity.
- 3. hydraulic support column according to claim 1, which is characterized in that the step（1）In, the drying and processing Technique be after 120~150 DEG C of 1.5~3.5h of range inside holding and to cool to powder with the furnace room temperature.
- 4. according to claim 1-3 any one of them hydraulic support columns, which is characterized in that the step（3）In, the light Spot and amyloid plaque are relative to the status requirement hot spot of column matrix clad can fusion with amyloid plaque in the position higher than 0.5~2mm of clad can fusion Put coincidence.
- 5. according to claim 1-3 any one of them hydraulic support columns, which is characterized in that the step（3）In, ultrahigh speed Rate laser cladding technological parameter is：Spot diameter is 1~3mm, and leg surface linear velocity, that is, cladding rate is 20~75m/min, 0.2~0.4mm of feed of every rotation, laser power are 1100~1600W, and powder feeding rate is 5~25g/min.
- 6. according to claim 1-3 any one of them hydraulic support columns, which is characterized in that step（5）It is middle by laser power It is reduced to 800~1500W.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711406964.6A CN108220952A (en) | 2017-12-22 | 2017-12-22 | A kind of hydraulic support column manufactured using superelevation rate laser cladding method |
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| CN201711406964.6A CN108220952A (en) | 2017-12-22 | 2017-12-22 | A kind of hydraulic support column manufactured using superelevation rate laser cladding method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109623275A (en) * | 2018-12-17 | 2019-04-16 | 安徽中达液压机电再制造科技有限公司 | A kind of reproducing method of hydraulic support column |
| CN109652796A (en) * | 2018-12-21 | 2019-04-19 | 中煤北京煤矿机械有限责任公司 | The method of increases material manufacturing technology processing hydraulic support cylinder body |
| CN114032545A (en) * | 2021-11-17 | 2022-02-11 | 北京北方车辆集团有限公司 | Preparation method of thin-wall shock absorber cylinder barrel coating |
| CN114160776A (en) * | 2021-12-30 | 2022-03-11 | 河南爱钢矿业科技有限公司 | Manufacturing method of full-protection hydraulic support upright column suitable for various media |
| WO2023159477A1 (en) * | 2022-02-22 | 2023-08-31 | 江苏大学 | Eccentric ultra-high-speed laser composite manufacturing method for revolving body component |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109623275A (en) * | 2018-12-17 | 2019-04-16 | 安徽中达液压机电再制造科技有限公司 | A kind of reproducing method of hydraulic support column |
| CN109652796A (en) * | 2018-12-21 | 2019-04-19 | 中煤北京煤矿机械有限责任公司 | The method of increases material manufacturing technology processing hydraulic support cylinder body |
| CN114032545A (en) * | 2021-11-17 | 2022-02-11 | 北京北方车辆集团有限公司 | Preparation method of thin-wall shock absorber cylinder barrel coating |
| CN114160776A (en) * | 2021-12-30 | 2022-03-11 | 河南爱钢矿业科技有限公司 | Manufacturing method of full-protection hydraulic support upright column suitable for various media |
| CN114160776B (en) * | 2021-12-30 | 2023-02-03 | 河南爱钢矿业科技有限公司 | Manufacturing method of full-protection hydraulic support upright column suitable for various media |
| WO2023159477A1 (en) * | 2022-02-22 | 2023-08-31 | 江苏大学 | Eccentric ultra-high-speed laser composite manufacturing method for revolving body component |
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Application publication date: 20180629 |