CN102777193B - Hollow hydraulic support upright and hydraulic support comprising upright - Google Patents
Hollow hydraulic support upright and hydraulic support comprising upright Download PDFInfo
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- CN102777193B CN102777193B CN201210267784.5A CN201210267784A CN102777193B CN 102777193 B CN102777193 B CN 102777193B CN 201210267784 A CN201210267784 A CN 201210267784A CN 102777193 B CN102777193 B CN 102777193B
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- upright post
- bracket upright
- hollow hydraulic
- hydraulic bracket
- hydraulic support
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Abstract
The invention provides a hollow hydraulic support upright and a hydraulic support comprising the upright. The hollow hydraulic support upright is characterized in that the inner surface of a main body of the hollow hydraulic support upright is provided with one or more than one laser cladding layer. According to the hollow hydraulic support upright provided by the invention, the inner surface of the main body of the hollow hydraulic support upright is provided with the laser lading layer, and thus the inner surface of the upright can be prevented from being corroded and infringed.
Description
Technical field
The hydraulic support that the present invention relates to a kind of hollow hydraulic bracket upright post and comprise this column.
Background technology
Hydraulic support column is the critical component in mining equipment, at home, for hydraulic support column, conventionally adopts the aspect of chromium plating to carry out surfacing, thereby prevents getting rusty and anticorrosion of surface.Yet the abrasion resistance of chromium coating is poor, generally, through after 1 ~ 1.5 year, chromium coating just there will be the phenomenons such as peeling and decortication, and therefore, emulsion will corrode column surface, thereby can have influence on the result of use of hydraulic support.
Notification number is the laser cladding method that the Chinese patent of CN101875128B discloses a kind of mine hydraulic support column, it carrys out three layers of metallurgical material of cladding by specific laser melting and coating process condition, thereby solved the abrasion resistance on mine hydraulic support column surface, the problem of anticorrosive property has improved application life.Concrete technical scheme is after mine hydraulic support column is carried out to surfacing, to carry out preheating, then under specific process conditions, with alloy powder material successively plating bottom, middle level and surface layer for cladding.Wherein, the C that the cladding that bottom is selected is 0.1% with the percentage by weight of alloy powder material, 3.2% Si, 0.5% Mn, 10.2% Cr, 8.8% Ni, 0.8% Nb, 0.1% B, 0.5% P and the Fe of surplus.
Notification number is that the Chinese patent application of CN102242361 discloses a kind of laser cladding method for mine hydraulic support column, the steps include: to make the Co-based alloy powder a fluid stream of laser beam and powder feeder output along the surface formation helical form scanning of the post alive of column body; The cross section of the laser beam of laser head output is set to the rectangular light spot of 15 ~ 20mm * 1.5 ~ 2.5mm, and the scan line speed of laser beam is set to 480 ~ 720mm/min, and the power output of the laser instrument of outgoing laser beam is set to 7200 ~ 7400W.In powder feeder, export you in conjunction with nearly powder, be set to contain by weight≤0.15%C, 0.5 ~ 1.0%Si, 0.4 ~ 0.8%Mn, 17.5 ~ 19.5%Cr, 21 ~ 25%Ni and surplus Fe.
For the resulting hydraulic support column of laser cladding method of above-mentioned mine hydraulic support column, its laser cladding layer is all positioned on the external surface of hydraulic support column, also there is no a kind of hydraulic support column also on inner surface with laser cladding layer at present.Yet in the use procedure of hydraulic support column, its inner surface also can face corrosion and infringement.
Summary of the invention
In order to solve the problems of the technologies described above, the hydraulic support that the invention provides a kind of hydraulic support column and comprise this column, has laser cladding layer on the inner surface of the main body of this hydraulic support column, can prevent that the inner surface of column is corroded and encroaches on.
Particularly, technical scheme provided by the present invention is as follows:
Technical scheme 1.
A hollow hydraulic bracket upright post has laser cladding layer more than one deck on the inner surface of the main body of hollow hydraulic bracket upright post.
Preferably, the internal diameter of the main body of described hollow hydraulic bracket upright post is more than 400mm, more than being preferably 420mm, and 450mm ~ 600mm more preferably.
Technical scheme 2.
According to the hollow hydraulic bracket upright post described in technical scheme 1, it changes part and is, has the laser cladding layer more than two-layer on the inner surface of the main body of hollow hydraulic bracket upright post.
Technical scheme 3.
According to the hollow hydraulic bracket upright post described in technical scheme 1 or 2, it changes part and is, the main body of described hollow hydraulic bracket upright post is the main body of the hollow hydraulic bracket upright post of structural alloy steel.The main body of described hollow hydraulic bracket upright post is preferably the main body of the hollow hydraulic bracket upright post of 27SiMn structural alloy steel.
Technical scheme 4.
According to the hollow hydraulic bracket upright post described in any one in technical scheme 1 ~ 3, it changes part and is, the gross thickness of described laser cladding layer is 0.3 ~ 0.9mm.
Technical scheme 5.
According to the hollow hydraulic bracket upright post described in technical scheme 4, it changes part and is, the gross thickness of described laser cladding layer is 0.4 ~ 0.7mm.
Technical scheme 6.
According to the hollow hydraulic bracket upright post described in technical scheme 5, it changes part and is, the gross thickness of described laser cladding layer is 0.4 ~ 0.5mm.
Technical scheme 7.
According to the hollow hydraulic bracket upright post described in any one in technical scheme 1 ~ 6, it changes part and is, on the external surface of the main body of hollow hydraulic bracket upright post, also has laser cladding layer more than one deck.
Technical scheme 8.
A hydraulic support, comprises the hollow hydraulic bracket upright post described in any one in claim 1 ~ 7.
According to the hollow hydraulic bracket upright post of technique scheme 1, owing to thering is laser cladding layer on surface within it, so can effectively prevent that the inner surface of column is corroded and encroaches on.
According to the hollow hydraulic bracket upright post of technique scheme 2, owing to thering is two-layer above laser cladding layer, can play better the effect that prevents that the inner surface of column is corroded and encroaches on.
In the hollow hydraulic bracket upright post of technique scheme 3, the material that has adopted comparatively common manufacture column to use, has adopted the material of main part of structural alloy steel as column.
According to the hollow hydraulic bracket upright post of technique scheme 4 ~ 6, the preferred gross thickness of several laser cladding layers.Wherein, if only there is one deck laser cladding layer on inner surface, the gross thickness of so described laser cladding layer refers to the thickness of this one deck laser cladding layer, if have the laser cladding layer more than two-layer on inner surface, the gross thickness of so described laser cladding layer refers to the summation of each layer thickness value of this two-layer above laser cladding layer.
According to the hollow hydraulic bracket upright post of technique scheme 7, owing to all thering is laser cladding layer on the surfaces externally and internally of the main body in hollow hydraulic bracket upright post, so can play, protect all sidedly hollow hydraulic bracket upright post to avoid corrosion and infringement.
Technical scheme 8 is a kind of hydraulic supports provided by the present invention.Owing to thering is the hollow hydraulic bracket upright post described in any one in technique scheme 1 ~ 7, thus will more lengthen the application life of this hydraulic support, and mechanical property is also better.
Accompanying drawing explanation
Fig. 1 is the whole schematic diagram of the hydraulic support column of the first embodiment of the present invention.
Fig. 2 be the first embodiment of the present invention hydraulic support column perpendicular to the axial cross sectional representation of A-A.
Fig. 3 be the 4th kind of embodiment of the present invention hydraulic support column perpendicular to the axial cross sectional representation of A-A.
Fig. 4 be the 5th kind of embodiment of the present invention hydraulic support column perpendicular to the axial cross sectional representation of A-A.
Label in figure represents respectively:
10---hydraulic support column, 101---the main body of hydraulic support column, 102---laser cladding layer.
The specific embodiment
In order to make those skilled in the art can more be well understood to technical scheme of the present invention, below in conjunction with drawings and embodiments, be elaborated.
the first embodiment
First the overall structure of hydraulic support column is described by accompanying drawing.
Refer to Fig. 1, Fig. 1 is the overall schematic of the hydraulic support column of the first embodiment of the present invention.As can be seen from Figure 1, the cylinder type that the integral body of hydraulic support column 10 of the present invention is hollow.In figure, dotted line A-A represents the axial of hydraulic support column 10.Wherein, dotted line A-A is by the center of circle of upper surface and the center of circle of soffit of hydraulic support column 10.
Refer to Fig. 2, Fig. 2 be the first embodiment of the present invention hydraulic support column perpendicular to the axial cross sectional representation of A-A.As can be seen from Figure 2, hydraulic support column 10 in the present embodiment comprises main body 101 and the laser cladding layer 102 of hydraulic support column.This laser cladding layer 102 is positioned on the inner surface of main body 101 of hydraulic support column.
The main body 101 of described hydraulic support column is the main body of the column of structural alloy steel, and particularly, what adopt in the present embodiment is the main body of the column of 27SiMn structural alloy steel.For example, be directed to the column of mine hydraulic bracket, so so long as can meet the service condition in colliery of the prior art or other ore deposits, that is to say, in the present invention, material for the column 101 of hydraulic support does not have special requirement, is preferably the main body of the hydraulic support column of 27SiMn.
Described laser cladding layer 102 is positioned on the inner surface of main body 101 of hydraulic support column, and laser cladding layer 102 is metallurgical binding with the inner surface of the main body 101 of hydraulic support column.In the present embodiment, the thickness of described laser cladding layer 102 is 0.5mm.
the second embodiment
The difference of the second embodiment and the first embodiment is only, in the second embodiment, the thickness of described laser cladding layer 102 is 0.7mm.
the third embodiment
The difference of the third embodiment and the first embodiment is only, in the third embodiment, the thickness of described laser cladding layer 102 is 0.4mm.
the 4th kind of embodiment
Refer to Fig. 3, Fig. 3 be the 4th kind of embodiment hydraulic support column perpendicular to the axial cross sectional representation of A-A.The difference of the 4th kind of embodiment and the first embodiment is only, in the 4th kind of embodiment, on the inner surface of the main body 101 of hydraulic support column, has two-layer laser cladding layer 102.For the thickness of this two-layer laser cladding layer 102, can equate, also can be unequal.For the number of plies of laser cladding layer 102, also can be three layers or more.
the 5th kind of embodiment
Refer to Fig. 4, Fig. 4 be the 5th kind of embodiment hydraulic support column perpendicular to the axial cross sectional representation of A-A.The difference of the 5th kind of embodiment and the first embodiment is only, in the 5th kind of embodiment, not only on the inner surface of the main body 101 of hydraulic support column, there is one deck laser cladding layer 102, and also there is laser cladding layer 102 on the external surface of the main body 101 of hydraulic support column.The thickness of the laser cladding layer 102 on the external surface of the main body 101 of hydraulic support column is 0.5mm.For the number of plies of the laser cladding layer 102 on the external surface of the main body 101 at hydraulic support column, it also can be for more than two-layer, and wherein, the thickness of each layer can equate, also can be unequal.
In addition, it should be noted that, hollow hydraulic bracket upright post of the present invention, the laser cladding layer having on its inner surface need to be realized by following method, of the prior artly utilizes the method that carbon dioxide laser carries out laser melting coating can not obtain hollow hydraulic bracket upright post of the present invention.And the preparation method's of hollow stent column of the present invention main points are, laser beam and cladding are carried out laser melting coating with the inside that alloy powder can extend into hollow hydraulic bracket upright post.
the manufacture method of hydraulic support column of the present invention
Hydraulic support column used in the present invention is that main body is the main body of structural alloy steel, and model is 27SiMn structural alloy steel.The external diameter of this column is 450mm, and internal diameter is 420mm.
Adopt following methods to carry out laser melting coating:
(1) mine hydraulic support column is eliminated rust, texturing processes.
(2) pack laser process machine into.
(3) in a work step, powder feeding is synchronizeed and is carried out with laser melting coating; The power output of laser instrument is 4000W, and laser scanning linear velocity is 480mm/min, the rectangular light spot that laser beam is 15*2.5mm (long is 15mm, and wide is 2.5mm); The mode that scans cladding is carried out cladding;
The laser melting coating alloy powder adopting, particle diameter is 44 ~ 178 μ m.Said composition comprises 0.02% C, 1.5% Si, 0.4% Mn, 15.8% Cr, 4.0% Ni, the Fe of surplus and inevitably impurity.This laser melting coating is 38 ~ 40g/min with the powder feed rate of alloy powder.
(4) carry out machining.
For the column obtaining, carry out experimental test, property indices is as follows:
(1) flawless.
(2) more than cladding layer hardness can reach 45 HRC, in mine, be more than 5 years application life, and more than the bond strength of cladding layer and column matrix can reach 310MPa, salt spray resistance is more than 96 hours unchanged.
About the bond strength of cladding layer and column matrix, more than it can reach 310MPa.
About salt spray resistance test, employing be CNS GB/T10125-1997, test the aqueous solution that medicine used is sodium chloride, concentration is 50g/L ± 5g/L, PH is 6.5 ~ 7.2, temperature is 35 ℃ ± 2 ℃.
Claims (1)
1. a hollow hydraulic bracket upright post, is characterized in that, on the inner surface of the main body of hollow hydraulic bracket upright post, has laser cladding layer more than one deck, and the inner surface of the main body of described laser cladding layer and described hollow hydraulic bracket upright post is metallurgical binding;
The laser cladding layer of the inner surface of the main body of described hollow hydraulic bracket upright post is to obtain by laser beam and cladding are carried out to coating produced by laser cladding with the inside that alloy powder extend into hollow hydraulic bracket upright post;
Wherein, the power output of laser instrument is 4000w, laser scanning linear velocity is 480mm/min, described laser beam is the rectangular light spot of 15mm * 2.5mm, and described cladding is 44-178 μ m with the particle diameter of alloy powder, and described cladding comprises 0.02% C with alloy powder, 1.5% Si, 0.4% Mn, 15.8% Cr, 4.0% Ni and the Fe of surplus.
2. hollow hydraulic bracket upright post according to claim 1, is characterized in that, has the laser cladding layer more than two-layer on the inner surface of the main body of hollow hydraulic bracket upright post.
3. hollow hydraulic bracket upright post according to claim 1 and 2, is characterized in that, the body of described hollow hydraulic bracket upright post is the body of the hollow hydraulic bracket upright post of structural alloy steel.
4. hollow hydraulic bracket upright post according to claim 1, is characterized in that, the gross thickness of described laser cladding layer is 0.3 ~ 0.9mm.
5. hollow hydraulic bracket upright post according to claim 4, is characterized in that, the gross thickness of described laser cladding layer is 0.4 ~ 0.7mm.
6. hollow hydraulic bracket upright post according to claim 5, is characterized in that, the gross thickness of described laser cladding layer is 0.4 ~ 0.5mm.
7. hollow hydraulic bracket upright post according to claim 1, is characterized in that, on the external surface of the main body of hollow hydraulic bracket upright post, also has laser cladding layer more than one deck.
8. a hydraulic support, is characterized in that, comprises the hollow hydraulic bracket upright post described in any one in claim 1 ~ 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210267784.5A CN102777193B (en) | 2012-07-31 | 2012-07-31 | Hollow hydraulic support upright and hydraulic support comprising upright |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210267784.5A CN102777193B (en) | 2012-07-31 | 2012-07-31 | Hollow hydraulic support upright and hydraulic support comprising upright |
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| Publication Number | Publication Date |
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| CN102777193A CN102777193A (en) | 2012-11-14 |
| CN102777193B true CN102777193B (en) | 2014-10-29 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105297007B (en) * | 2015-11-15 | 2018-06-01 | 山东能源重型装备制造集团有限责任公司 | A kind of cladding method of column endoporus |
| CN105441939B (en) * | 2015-11-15 | 2018-07-10 | 山东能源重装集团大族再制造有限公司 | A kind of cladding method of hollow member |
| CN105349993B (en) * | 2015-11-15 | 2018-04-13 | 山东能源重型装备制造集团有限责任公司 | A kind of cladding method of column endoporus |
| CN108194113A (en) * | 2017-12-12 | 2018-06-22 | 昆山中士设备工业有限公司 | A kind of hydraulic prop for mine and its manufacturing method |
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| CN101338427A (en) * | 2008-08-07 | 2009-01-07 | 沈阳大陆激光成套设备有限公司 | Laser fusing and coating process for wear resistant and etch-resistant coating of hydraulic support column cylinder and piston rod |
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| CN202755994U (en) * | 2012-07-31 | 2013-02-27 | 山东能源机械集团大族再制造有限公司 | Hollow hydraulic support vertical column and hydraulic support with same |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070079507A1 (en) * | 2005-10-12 | 2007-04-12 | Kenny Cheng | Blade shroud repair |
| US9168613B2 (en) * | 2010-10-22 | 2015-10-27 | Paul T. Colby | Vertical laser cladding system |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101338427A (en) * | 2008-08-07 | 2009-01-07 | 沈阳大陆激光成套设备有限公司 | Laser fusing and coating process for wear resistant and etch-resistant coating of hydraulic support column cylinder and piston rod |
| CN101942657A (en) * | 2010-09-20 | 2011-01-12 | 中煤邯郸煤矿机械有限责任公司 | Surface laser cladding method of hydraulic support post and jack |
| CN102242361A (en) * | 2011-06-29 | 2011-11-16 | 山东能源机械集团大族再制造有限公司 | Laser cladding method for mining hydraulic support column and mining stainless steel hydraulic column |
| CN202755994U (en) * | 2012-07-31 | 2013-02-27 | 山东能源机械集团大族再制造有限公司 | Hollow hydraulic support vertical column and hydraulic support with same |
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| CN102777193A (en) | 2012-11-14 |
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Inventor after: Su Lunchang Inventor after: Tantai Fanliang Inventor after: Zhang Wen Inventor after: Zhou Feng Inventor after: Yang Qingdong Inventor after: Zhang Yanliang Inventor after: Dong Chunchun Inventor before: Li Xiyong Inventor before: Zhou Feng Inventor before: Du Boqi Inventor before: Zhang Yanliang Inventor before: Yang Qingdong Inventor before: Su Lunchang Inventor before: Dong Chunchun Inventor before: Tantai Fanliang |
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Free format text: CORRECT: INVENTOR; FROM: LI XIYONG ZHOU FENG DU BOQI ZHANG YANLIANG YANG QINGDONG SU LUNCHANG DONG CHUNCHUN TANTAI FANLIANG TO: SU LUNCHANG TANTAI FANLIANG ZHANG WEN ZHOU FENG YANG QINGDONG ZHANG YANLIANG DONG CHUNCHUN |
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Owner name: SHANDONG ENERGY HEAVY EQUIPMENT GROUP DAZU REMANUF Free format text: FORMER NAME: SHANDONG ENERGY MACHINERY GROUP HAN S REMANUFACTURING CO., LTD. |
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Address after: 271200 Shandong city of Xintai province Tai'an City Xindong town new road three Patentee after: Shandong Manufacturing Co., Ltd again of energy refitting big nation of group Address before: 271219 Shandong city of Tai'an province Xintai Xinwen Street Office Zhang Zhuang Patentee before: Shandong Energy Machinery Group Dazu Remanufacturing Co.,Ltd. |