CN106148945A - Preparation method for the self-lubricating coat in use of flat head sleeve working face and flat head sleeve thereof - Google Patents
Preparation method for the self-lubricating coat in use of flat head sleeve working face and flat head sleeve thereof Download PDFInfo
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- CN106148945A CN106148945A CN201510198850.1A CN201510198850A CN106148945A CN 106148945 A CN106148945 A CN 106148945A CN 201510198850 A CN201510198850 A CN 201510198850A CN 106148945 A CN106148945 A CN 106148945A
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- flat head
- head sleeve
- self
- lubricating coat
- flat
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Abstract
The invention discloses the preparation method of a kind of self-lubricating coat in use for flat head sleeve working face and flat head sleeve thereof, comprising: bottom and top layer, the material of described bottom is made up of the carbon based on constant weight percentage, chromium, nickel, vanadium and ferro element；The material on described top layer is made up of the carbon based on constant weight percentage, chromium, iron, manganese, nickel, cobalt element.The preparation method of the flat head sleeve containing described self-lubricating coat in use includes making blank, blank forging, roughing, ultrasonic inspection, heat treatment, semifinishing, cladding self-lubricating coat in use, finishing, nondestructive inspection, finished product.The present invention, in flat head sleeve manufacture process, cancels surface heat treatment process, by cladding self-lubricating coat in use on working face, thus improves the anti-wear performance of flat head sleeve working face, extends the service life 3～5 times of flat head sleeve, greatly reduces the maintenance cost of equipment.Meanwhile, the method for the present invention can be applied not only to manufacture flat head sleeve, it is also possible to is applied to flat head sleeve reparation.
Description
Technical field
The present invention relates to a kind of milling train flat head sleeve with self-lubricating coat in use, belong to metal-pressed machine technology neck
Territory.
Background technology
Milling train flat head sleeve is the critical component of mill main drive system, and its equipment state not only directly affects milling train
The state of main transmission equipment, also contributes to product quality.The common failure mode of flat head sleeve has cracking and work
Surface wear.The problem easily worn and torn for flat head sleeve working face, existing commonly used Surface heat-treatent technology (is oozed
Carbon quenching, deep nitrizaton are processed or impewdance matching) to improve the anti-wear performance of flat head sleeve.For example:
The restorative procedure of patent 200910051422.0 roller mill main axle lining plate-free flat-head cap discloses one
The restorative procedure of roller mill main axle lining plate-free flat-head cap, first to lining plate-free flat-head interplanting stress relief annealing to eliminate
Internal stress, to flat gesture face induction annealing to reduce hardness and to make temper in 2 hours, checks and determines
Flat gesture face fatigue layer thickness dye penetrant inspection determine that flawless produces, and use machining to remove flat gesture face tired
Layer, then carry out dye penetrant inspection and determine flat gesture face flawless, use the flat gesture face of aerosolization nickel-base alloy powder foot couple to make
Laser melting coating, its laser cladding layer reaches the 90 of bulk strength with the mechanical properties strength of body matrix binder course
More than %, hardness is 35HRC, and cladding layer is machined to the fit dimension with roller mill main axle dye penetrant inspection,
Determine flat gesture face not damaged；Use the lining plate-free flat-head cap of this method fixable failure, recover lining plate-free flat-head
The effectiveness of set, it is ensured that automatically controlling and end product quality of milling train, reduces the cost of overhaul, improves linerless
The service life of plate flat head sleeve.
Patent CN201010237120.5 discloses a kind of method for repairing flat-head cap without liner plate, described method bag
Include annealing and Product processing operation, it is characterised in that: described method step is as follows: (1) is flat-sided to flat head sleeve two
Anneal in gesture face, to reduce carburized layer hardness to≤HRC30, and (2) machining, flat to remove flat head sleeve
The hardstanding in gesture face, (3) flat gesture face to flat head sleeve carries out laser cladding reparation, is formed resistance on flat gesture face surface
Mill layer, (4) Product processing.According to the method for repairing flat-head cap without liner plate of the present invention, flat head sleeve surface deposited metal layer
There is higher anti-wear performance, after the abrasion of flat head sleeve can being reduced and making to scrap flat head sleeve reparation, reclaim profit again
With so that flat head sleeve has longer service life.
Patent CN201010534131.X discloses a kind of employing laser melting and coating technique and prepares flat head sleeve self-lubricating
The method of wearing layer, is characterized in: the surface portion of laser melting coating is treated in first cleaning, polishing flat head sleeve, by oxygen
Change layer and fatigue layer is removed clean；Then laser melting coating, cladding layer uses function-graded material, surface abrasion resistance
Layer selects the Co-based powder material with self-lubricating property, and between wearing layer and base material, employing has excellent
Shock resistance and the iron(-)base powder that metallurgical compatibility is good with matrix；Finally to the size before and after cladding
Detection, determine cladding thickness, detected by dye penetrant inspection, it is ensured that cladding layer flawless, pore, be mingled with scarce
Fall into.The present invention has the wearing layer of flat head sleeve and substrate combinating strength is high, self-lubricating property is good, strong adaptability,
Simple to operate, mismachining tolerance is little, the thickness of the wearing layer feature such as uniformly.
But, in practice it has proved that, although Surface heat-treatent technology can alleviate the abrasion of flat head sleeve, but homalocephalus
The service life of set still cannot meet requirement.
Content of the invention
The present invention, by flat head sleeve working face cladding self-lubricating coat in use, manufactures one band self-lubricating wear-resistant coating
Milling train flat head sleeve.The service life of this flat head sleeve is considerably longer than existing flat head sleeve, can be substantially reduced
Cost of equipment maintenance.
To achieve these goals, technical scheme is as follows:
A kind of self-lubricating coat in use for flat head sleeve working face, comprising: bottom and top layer, described bottom
Material is made up of the following element of percentage:
C:0.1～0.3%, Cr:15～17%, Ni:2.5～4.5%, V:0～0.5%, balance of Fe；
The material on described top layer is made up of the following element of percentage:
C:0.3～0.5%, Cr:31～33%, Fe:2.0～4.0%, Mn:0～0.3%, Ni:2.5～
4.5%th, balance of Co.
Preferably, be additionally provided with intermediate layer between described bottom and top layer, the material in described intermediate layer by
The following element composition of percentage:
C:0.1～0.3%, Cr:16～20%, Ni:70～72%, Mo:4.3～4.6%, V:0.50～
0.80%th, balance of Fe.
Preferably, the thickness on described top layer is 2～3mm.
According to different use occasions, self-lubricating coat in use can use double-layer structure or three-decker.Wherein two
Rotating fields is for the new product manufacture of flat head sleeve, and three-decker is mainly used in the reparation of flat head sleeve.Double-layer structure
Coating is divided into bottom and surface layer.Bottom uses and the material that matrix wellability is good, bond strength is high, it is ensured that molten
The bond strength covering material with matrix is not less than the 90% of bulk strength.If increased between bottom and top layer
One intermediate layer, then define the coating of three-decker.
The preparation method of a kind of flat head sleeve with self-lubricating coat in use as described in the present invention, it includes walking as follows
Rapid: to make blank, blank forging, roughing, ultrasonic inspection, heat treatment, semifinishing, cladding from profit
Sliding coating, finishing, nondestructive inspection, finished product.
Preferably, described cladding self-lubricating coat in use is cladding two-layer or three-layer self lubricating coating.
The present invention, in flat head sleeve manufacture process, cancels surface heat treatment process, by cladding on working face
Self-lubricating coat in use, thus improve the anti-wear performance of flat head sleeve working face, extend the service life 3～5 of flat head sleeve
Times, greatly reduce the maintenance cost of equipment.Meanwhile, the method for the present invention can be applied not only to manufacture flat
Headgear, it is also possible to be applied to flat head sleeve reparation.
Brief description
Fig. 1 is the structural representation of the flat head sleeve of the present invention；
In figure: the 1st, flat head sleeve；11st, flat face；12nd, arcwall face.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described, but protection scope of the present invention is not only limited to
Embodiment.
Flat head sleeve is according to the difference of partial structurtes, and its working face both can be two flat faces of endoporus, it is also possible to
Being two flat faces (plane) of endoporus and two arc surfaces, the working face of flat head sleeve is the master of flat head sleeve abrasion
Want position.Two flat faces (plane) of endoporus and two on the working face of the flat head sleeve being provided of the present invention
Arcwall face, as it is shown in figure 1, the flat face 11 and two that on the working face of flat head sleeve 1, endoporus two is oppositely arranged
The individual arcwall face 12 being oppositely arranged.
The manufacturing process of existing flat head sleeve is as follows:
Blank → forging → roughing → ultrasonic inspection → heat treatment → semifinishing → Surface heat-treatent →
Finishing → magnetic powder inspection → finished product
According to the difference of flat head sleeve body material, conventional surface heat treatment process has: carburizing and quenching, deep layer
The technique such as nitrogen treatment and impewdance matching.
Manufacturing process with lubricant coating flat head sleeve is as follows:
Blank → forging → roughing → ultrasonic inspection → heat treatment → semifinishing → cladding self-lubricating coat in use
→ finishing → nondestructive inspection → finished product, wherein, cladding self-lubricating coat in use can be one layer or two-layer and two-layer
Above, generally two-layer or three layers are preferably.
Cladding self-lubricating coat in use technique is used to replace traditional Surface heat-treatent work with self-lubricating coat in use flat head sleeve
Skill, to improve the anti-wear performance of flat head sleeve working face.According to different use occasions, self-lubricating coat in use is permissible
Use double-layer structure or three-decker.Wherein double-layer structure is for the new product manufacture of flat head sleeve, three-decker master
The reparation of flat head sleeve to be used for.The coating of double-layer structure is divided into bottom and surface layer.Bottom uses and matrix infiltration
Property good, material that bond strength is high, it is ensured that cladding material is not less than bulk strength with the bond strength of matrix
90%.The Exemplary chemical composition weight percent of primer is: C:0.1～0.3%, Cr:15～17%,
Ni:2.5～4.5%, V:0～0.5%, balance of Fe.Take into account wearability and machining property, directly
With the top layer of roll contact, using the material that self-lubricating property is good, its case hardness is HRC35～45.
Skin depth >=2mm.The Exemplary chemical composition weight percent of skin-material is: C:0.3～0.5%,
Cr:31～33%, Fe:2.0～4.0%, Mn:0～0.3%, Ni:2.5～4.5%, balance of Co.
If increasing an intermediate layer between bottom and top layer, then define the coating of three-decker.Intermediate layer material
Material Exemplary chemical composition weight percent: C:0.1～0.3%, Cr:16～20%, Ni:70～72%,
Mo:4.3～4.6%, V:0.50～0.80%, balance of Fe.Such self-lubricating coat in use has good
Wearability.
According to different skin-materials, after cladding self-lubricating coat in use, use different nondestructive inspection technique, it is ensured that
The cladding quality of self-lubricating layer.
This technology has been applied successfully to the roller mill main axle of main rolling line.Concrete case study on implementation such as table 1 institute
Show.
Therefore this technology can be generalized to all of hot rolled strip, heavy plate rolling production line.
In sum, only presently preferred embodiments of the present invention, is not used for limiting the model that the present invention implements
Enclose, all impartial changes done according to the shape described in scope of the invention as claimed, construction, feature and spirit
With modification, all should be included in scope of the presently claimed invention.
The application example with self-lubricating coat in use flat head sleeve for the table 1
Claims (5)
1. the self-lubricating coat in use for flat head sleeve working face, it is characterised in that include: bottom and top layer,
The material of described bottom is made up of the following element of percentage:
C:0.1～0.3%, Cr:15～17%, Ni:2.5～4.5%, V:0～0.5%, balance of Fe；
The material on described top layer is made up of the following element of percentage:
C:0.3～0.5%, Cr:31～33%, Fe:2.0～4.0%, Mn:0～0.3%, Ni:2.5～4.5%,
Balance of Co.
2. self-lubricating coat in use as claimed in claim 1, it is characterised in that also set between described bottom and top layer
Having intermediate layer, the material in described intermediate layer is made up of the following element of percentage:
C:0.1～0.3%, Cr:16～20%, Ni:70～72%, Mo:4.3～4.6%, V:0.50～
0.80%th, balance of Fe.
3. self-lubricating coat in use as claimed in claim 1 or 2, it is characterised in that the thickness on described top layer is
2～3mm.
4. having a preparation method for the flat head sleeve of self-lubricating coat in use as claimed in claim 3, its feature exists
In comprising the steps: to make blank, blank forging, roughing, ultrasonic inspection, heat treatment, half essence
Processing, cladding self-lubricating coat in use, finishing, nondestructive inspection, finished product.
5. preparation method as claimed in claim 4, it is characterised in that the method for described cladding self-lubricating coat in use
For: described cladding self-lubricating coat in use is cladding two-layer or three-layer self lubricating coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510198850.1A CN106148945B (en) | 2015-04-22 | 2015-04-22 | For the self-lubricating coat in use of flat head sleeve working face and its preparation method of flat head sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510198850.1A CN106148945B (en) | 2015-04-22 | 2015-04-22 | For the self-lubricating coat in use of flat head sleeve working face and its preparation method of flat head sleeve |
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| CN106148945A true CN106148945A (en) | 2016-11-23 |
| CN106148945B CN106148945B (en) | 2019-03-29 |
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| CN201510198850.1A Active CN106148945B (en) | 2015-04-22 | 2015-04-22 | For the self-lubricating coat in use of flat head sleeve working face and its preparation method of flat head sleeve |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108115351A (en) * | 2016-11-30 | 2018-06-05 | 宝山钢铁股份有限公司 | A kind of flat head sleeve repair method of bores |
| CN109731918A (en) * | 2019-03-08 | 2019-05-10 | 烟台蓝鲸增材有限公司 | A kind of homalocephalus increasing material composite manufacturing |
| CN114277369A (en) * | 2021-12-13 | 2022-04-05 | 重庆机电增材制造有限公司 | Impulse turbine spray needle and manufacturing method thereof |
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| US5238481A (en) * | 1991-02-08 | 1993-08-24 | Toyo Kohan Co., Ltd. | Heat resistant sintered hard alloy |
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| CN101077644A (en) * | 2006-05-26 | 2007-11-28 | 南京盛润科技有限公司 | Gradient compound material and preparation method |
| CN101705487A (en) * | 2009-11-05 | 2010-05-12 | 沈阳黎明航空发动机(集团)有限责任公司 | Method for preparing reignition turbine first-stage work bladetip wear-resistant coating |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108115351A (en) * | 2016-11-30 | 2018-06-05 | 宝山钢铁股份有限公司 | A kind of flat head sleeve repair method of bores |
| CN109731918A (en) * | 2019-03-08 | 2019-05-10 | 烟台蓝鲸增材有限公司 | A kind of homalocephalus increasing material composite manufacturing |
| CN114277369A (en) * | 2021-12-13 | 2022-04-05 | 重庆机电增材制造有限公司 | Impulse turbine spray needle and manufacturing method thereof |
| CN114277369B (en) * | 2021-12-13 | 2024-01-09 | 重庆机电增材制造有限公司 | Jet needle of impulse turbine and manufacturing method thereof |
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| CN106148945B (en) | 2019-03-29 |
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