CN103111469B - Plasma spray composite roll and the manufacture method of composite ring - Google Patents
Plasma spray composite roll and the manufacture method of composite ring Download PDFInfo
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- CN103111469B CN103111469B CN201310037712.6A CN201310037712A CN103111469B CN 103111469 B CN103111469 B CN 103111469B CN 201310037712 A CN201310037712 A CN 201310037712A CN 103111469 B CN103111469 B CN 103111469B
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- basic ring
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Abstract
A kind of plasma spray composite roll, composite ring and manufacture method thereof.By the method for plasma spray by collars material surfacing on center standard shaft (ring), thus obtain both and there is good metallurgical binding, utilize composite roll and the working lining excellent performance of composite ring that the method makes, stock utilization is high, and standard shaft (ring) can Reusability, product cost is relatively low.
Description
Technical field
The invention belongs to the technical field of steel rolling of steel and iron industry, be specifically related to a kind of plasma spray composite roll
And the manufacture method of composite ring.
Background technology
Steel and iron industry is the important foundation industry of national economy, is the important of national economy level and overall national strength
Mark.Rolling production is then the operation that the final finished during whole iron and steel produces produces, and the roll in milling train
It it is then the Chief instrument of steel rolling.Decide the precision of steel product, quality, kind and cost, and
It is the most important consumable tool of Rolling production and main consuming cost.China's roll consumption amount of 2011 reaches
To more than 70 ten thousand tons, nearly 300 of existing roll manufacturer.But still can not meet the height of China's steel rolling industry
End product requirement, high performance roll also relies on external import.Along with Chinese national economy fast development with
And the fast development of national defense industry, Steel-rolling Industry and composite roll are proposed can be the highest technical performance
Require and Financial cost requirement, and energy-saving and cost-reducing science sustainable development is contributed.
Existing composite roll production technology mainly has a centrifugal casting technical matters, submerged arc overlay welding technical matters,
Carbide roll ring technical matters, and the still injection molding composite roll in the research and development production appeared in the newspapers recently
Technical matters method.
It is the roll working lining and standard shaft two centrifugal casting obtained that centrifugal casting technical matters produces composite roll
Secondary casting combines, and forms composite roll.Its advantage is that technique is simple, technology maturation, batch are big.
It is the major technique technique producing composite roll the most both at home and abroad.Its shortcoming is the roll working lining tissue of cast
Segregation, coarse grains, alloying component is restricted, is difficult to obtain roll working lining wear-resistant, that intensity is high.
Rolled steel Mass accuracy is low, and the i.e. cost of roll consumption height is high.
Submerged arc overlay welding technical matters is currently used primarily in repaired roller, and the roll after abrasion will be used to carry out table
Face size restoration, it uses special welding wire (containing core welding wire and without core welding wire) by submerged arc welding machine by welding wire
Heap is welded in standard shaft surface, forms the working lining of composite roll.Its advantage is that technique is simple, but shortcoming is alloy
Composition is restricted, and alloy content is low, and collars performance is low.
Hard alloy compound roller technology, is to be adopted by the carbide roll ring using powder metallurgy process to produce
By insetting case technology, collars and standard shaft are combined together to form composite roll.The advantage of this technology is to obtain
The working lining of excellent performance, has super-high wear-resistant performance.Its shortcoming is that collars size is restricted, and is not easy to obtain
To the large scale above collars of diameter 400mm, and complex process, product uses and requires that environmental condition is strict, easily
Fracture, particularly cost is the highest, it is difficult to promote.
The most still injection molding technical matters in research and development, it is by being atomized by the alloy solution smelted
Spraying, is directly sprayed onto standard shaft surface, forms composite roll, and its advantage production efficiency is high (every according to relevant report
Minute working lining emitted dose 20 kilograms), metallographic structure is tiny, uniform, and anti-wear performance is high.Its shortcoming, work
Skill is complicated, and equipment is complicated, puts into big, and alloy content is restricted, is difficult to obtain high performance working lining collars,
Tissue looseness easily occurs.
Summary of the invention
The invention aims to solve the problems referred to above, it is provided that plasma spray composite roll and composite ring
Manufacture method；Its technical scheme is as follows:
A kind of plasma spray composite roll, including roll standard shaft and alloy working lining, is characterized in that:
Described roll standard shaft is revolving body, and described alloy working lining covers the outer surface at revolving body, institute
The alloy working lining stated is plasma spray composite bed.
Described roll standard shaft is cylinder, and its material is alloys in common use steel.
A kind of plasma spray composite ring, including basic ring and the alloy working lining of collars, is characterized in that:
Described basic ring is revolving body, and described alloy working lining covers the outer surface at revolving body, described
Alloy working lining is plasma spray composite bed.
Described basic ring is torus, and its material is alloys in common use steel.
A kind of plasma spray composite roll and the manufacture method of composite ring, specifically include following steps:
A: by standard shaft or the basic ring of machine tooling roll, the outer surface of standard shaft or basic ring is machined out,
To remove surface impurity, it is ensured that bright and clean；
B: the alloy powder composition of preparation surfacing,
C: standard shaft or basic ring are preheated to 400～450 DEG C in heating furnace, are then installed on rotatable lathe
On fixture；
D: the alloy composite dried in step b is loaded in the magazine of Plasma Spraying Equipment；Regulation is suitably
Technological parameter, adjusts nozzle distance standard shaft or basic ring surface about 10mm, starts spray-welding machine surfacing and forms alloy work
Make layer；And keep spray process apophysis or basic ring temperature 280-350 DEG C；
E: in order to prevent roll surface from cracking, is placed on heating furnace by the standard shaft or the basic ring that shape described in step d
In, no less than insulation 2 hours, when then cooling to less than 150 DEG C with the furnace, come out of the stove.
Various powder sizes in alloy composite are 100-200 mesh, and mechanical mixture is uniform, before surfacing
120-150 DEG C of environment is dried 30 minutes.
Technological parameter in step d at least includes electric current, air pressure, powder feed rate, spray gun amplitude of oscillation width, base
Axle rotary speed, gas flow.
Beneficial effects of the present invention
1. the plasma spray composite roll (collars) using the inventive method to make, has arc temperature
Height, the coefficient of overall heat transmission are big, good stability, and fusion penetration controllability is strong, by the parameter that regulation is relevant, and can butt welding
The thickness of layer, width, hardness the most freely adjust.Utilize powder as spray material,
Can improve the selectivity of alloy design, particularly can surfacing refractory material smoothly, raising workpiece resistance to
Mill, high temperature resistant, corrosion resistance.
Plasma spray temperature is high, heat affected area is little, there is argon shield in surfacing district, can well fit
Should the metal dust of various fusing points, solidification is fast, suppresses and to avoid the element produced in process of setting inclined
Analysis phenomenon.
Use the plasma spray composite roll (collars) made of the inventive method, compare centrifugal casting,
The forming modes such as the combination of submerged arc overlay welding, hard alloy, injection molding, have working lining collars alloy
Setting up meter separately convenient, it is easy to meet and use requirement, and metallographic structure is uniform, crystal grain is tiny, dense structure,
Anti-corrosion and wearability good, surfacing working lining outward appearance beautiful appearance, dimensioned amount is little, stock utilization
High；
Use the plasma spray composite roll (collars) that the inventive method is made, the work of surfacing molding
Layer collars, hardness just need not can directly reach more than hardness HRC60 by any heat treatment, therefore need not hot at
Science and engineering sequence；
4. the plasma spray composite roll (collars) of the present invention, working lining collars and standard shaft (ring)
Both are combined into metallurgical binding, and intensity is high, it is ensured that binder course has good bond strength.
5. the standard shaft (ring) of the plasma spray composite roll (collars) of the present invention, reusable,
Energy-saving and emission-reduction, reduce material consumption；
6. powder plasma surfacing has higher production efficiency, and forming surface is smooth attractive in appearance, spray process
It is easily achieved mechanization and automatization.
7, equipment investment is few, non-environmental-pollution.
Accompanying drawing explanation
Fig. 1 is the structural representation of this plasma spray composite roll；
Fig. 2 is the structural representation of this plasma spray welding compound roller ring；
Fig. 3 is the surfacing state diagram of this plasma spray composite roll manufacture method:
1. jigs, 2. roller substrate, 3. alloy working lining, 4. plasma gun in figure, 5. connect electric wire,
6. power source special, wherein 4.1. protective gas, 4.2. working lining powder, 4.3. plasma gas, 4.4. electrode.
Detailed description of the invention
Embodiment one: seeing Fig. 1, a kind of plasma spray composite roll, including roll standard shaft and alloy
Working lining, is characterized in that: described roll standard shaft is revolving body, and described alloy working lining covers
The outer surface of revolving body, described alloy working lining is plasma spray composite bed.Described roll base
Axle is cylinder, and its material is alloys in common use steel.
Embodiment two: seeing Fig. 2, a kind of plasma spray composite ring, including basic ring and the conjunction of collars
Gold working lining, is characterized in that: described basic ring is revolving body, and described alloy working lining covers and returning
The outer surface turned, described alloy working lining is plasma spray composite bed.Described basic ring is circle
Ring body, its material is alloys in common use steel.
Embodiment three: see Fig. 3, a kind of plasma spray composite roll and the manufacture method of composite ring,
Specifically include following steps:
A: by standard shaft or the basic ring of machine tooling roll, the outer surface of standard shaft or basic ring is machined out,
To remove surface impurity and size, it is ensured that bright and clean；
B: the alloy powder composition of preparation surfacing,
C: standard shaft or basic ring are preheated to 400～450 DEG C in heating furnace, are then installed on rotatable lathe
On fixture；
D: the alloy powder composition dried in step b is loaded in the magazine of Plasma Spraying Equipment；Regulation is closed
Suitable technological parameter, adjusts nozzle distance standard shaft or basic ring surface about 10mm, starts spray-welding machine surfacing and forms conjunction
Gold working lining；And keep spray process apophysis or basic ring temperature 280-350 DEG C；
E: in order to prevent roll surface from cracking, is placed on heating furnace by the standard shaft or the basic ring that shape described in step d
In, no less than insulation 2 hours, when then cooling to less than 150 DEG C with the furnace, come out of the stove.
Various powder sizes in alloy composite are 100-200 mesh, and mechanical mixture is uniform, before surfacing
120-150 DEG C of environment is dried 30 minutes.
Technological parameter in step d at least includes electric current, air pressure, powder feed rate, spray gun amplitude of oscillation width, base
Axle rotary speed, gas flow.
Claims (3)
1. plasma spray composite roll or a manufacture method for composite ring, specifically includes following steps:
A: by standard shaft or the basic ring of collars of machine tooling roll, the outer surface of standard shaft or basic ring is machined out, to remove surface impurity, it is ensured that bright and clean；
B: the alloy powder composition of preparation surfacing,
C: standard shaft or basic ring are preheated to 400～450 DEG C in heating furnace, are then installed on rotatable jig；
D: the alloy powder composition dried in step b is loaded in the magazine of Plasma Spraying Equipment；Regulate suitable technological parameter, adjust nozzle distance standard shaft or basic ring surface about 10mm, start spray-welding machine surfacing and form alloy working lining；And keep spray process apophysis or basic ring temperature 280-350 DEG C；
E: in order to prevent the surface of standard shaft or basic ring from cracking, is placed on the standard shaft or the basic ring that shape described in step d in heating furnace, no less than insulation 2 hours, when then cooling to less than 150 DEG C with the furnace, comes out of the stove.
Plasma spray composite roll the most according to claim 1 or the manufacture method of composite ring, is characterized in that: the various powder sizes in alloy powder composition are 100-200 mesh, and mechanical mixture is uniform, dries 30 minutes at 120-150 DEG C of environment before surfacing.
Plasma spray composite roll the most according to claim 1 or the manufacture method of composite ring, is characterized in that: the technological parameter in step d at least includes electric current, air pressure, powder feed rate, spray gun amplitude of oscillation width, standard shaft rotary speed, gas flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310037712.6A CN103111469B (en) | 2013-01-03 | 2013-01-03 | Plasma spray composite roll and the manufacture method of composite ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310037712.6A CN103111469B (en) | 2013-01-03 | 2013-01-03 | Plasma spray composite roll and the manufacture method of composite ring |
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| CN103111469A CN103111469A (en) | 2013-05-22 |
| CN103111469B true CN103111469B (en) | 2016-11-16 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105728922B (en) * | 2016-04-18 | 2018-10-30 | 华能国际电力股份有限公司 | A method of being suitable for boiler tubing plasma spray Co-based alloy powder |
| CN106637044B (en) * | 2016-12-09 | 2020-02-04 | 成都布雷德科技有限公司 | Method for preparing alloy ceramic composite coating by plasma spray welding and plasma spray welding gun |
| CN111055001A (en) * | 2020-01-03 | 2020-04-24 | 无锡市产品质量监督检验院 | Cement roller press surface additive manufacturing repair device and repair method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2586547Y (en) * | 2001-12-21 | 2003-11-19 | 熊光仪 | Duromer coated roller |
| CN102019722A (en) * | 2009-09-18 | 2011-04-20 | 上海大松瓦楞辊有限公司 | Corrugator roll surface processing structure |
| CN102303213B (en) * | 2011-07-07 | 2013-04-03 | 泰尔重工股份有限公司 | Production process of composite sliding plate |
| CN102618867B (en) * | 2012-03-19 | 2013-10-16 | 湖南三泰新材料股份有限公司 | Composite reinforcement method for TiC/TiB2 base metal ceramic on surface of roller |
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Address after: No. 18, Huangshan Street, Recycling Chemical Industry Park, Shijiazhuang City, Hebei Province, 050011 Patentee after: Shijiazhuang Taiwei Technology Co.,Ltd. Address before: 050011 No. 188 Huangshan street, East Development Zone, Shijiazhuang, Hebei Province Patentee before: SHIJIAZHUANG GLOBAL NEW CENTURY TOOLS CO.,LTD. |