CN103111469A - Plasma spray welding composite roll, composite roll collar and manufacturing method thereof - Google Patents
Plasma spray welding composite roll, composite roll collar and manufacturing method thereof Download PDFInfo
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- CN103111469A CN103111469A CN2013100377126A CN201310037712A CN103111469A CN 103111469 A CN103111469 A CN 103111469A CN 2013100377126 A CN2013100377126 A CN 2013100377126A CN 201310037712 A CN201310037712 A CN 201310037712A CN 103111469 A CN103111469 A CN 103111469A
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Abstract
Disclosed are a plasma spray welding composite roll, a composite roll collar and a manufacturing method thereof. Roll collar material is spray-welded on a central basic shaft (ring) with the method of plasma spray welding, and then good metallurgical bonding is achieved. The composite roll and the composite roll collar manufactured with the method are excellent in performance of working linings, the utilizing rate of the material is high, and as the basic shaft (ring) can be repeatedly used, product cost is 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 ion surfacing composite roll, composite ring and manufacture method thereof.
Background technology
Steel and iron industry is the important foundation industry of national economy, is the important symbol of national economy level and overall national strength.It is the operation that the final finished during whole iron and steel is produced is produced that steel rolling is produced, and the roll in milling train is the main key tool of steel rolling.Determining precision, quality, kind and the cost of steel product, and be most important consumable tool and main consuming cost that steel rolling is produced.China's roll consumption amount of 2011 has reached more than 70 ten thousand tons, nearly 300 of existing roll manufacturer.But still can not meet the high-end product requirement of China's steel rolling industry, high performance roll also relies on external import.Along with the fast development of Chinese national economy and the fast development of national defense industry, Steel-rolling Industry and composite roll have been proposed technical property requirements and financial cost requirement that can be more and more higher, and energy-saving and cost-reducing science sustainable development has been contributed.
Existing composite roll production technology mainly contains the centrifugal casting technical matters, submerged arc overlay welding technical matters, carbide roll ring technical matters, and the still injection molding composite roll production technology process method in research and development of appearing in the newspapers recently.
It is that roll working lining and center standard shaft second casting that centrifugal casting obtains are combined that the centrifugal casting technical matters is produced composite roll, forms composite roll.Its advantage is that technique is simple, technology maturation, large in batches.To produce at present the major technique technique of composite roll both at home and abroad.Its shortcoming is roll working lining microstructure segregation, the coarse grains of cast, and alloying component is restricted, is difficult to obtain the roll working lining wear-resistant, that intensity is high.Rolled steel quality precision is low, and roll consumption is high is that cost is high.
The submerged arc overlay welding technical matters is mainly used in repaired roller at present, be about to use the roll after wearing and tearing to carry out the surface size recovery, it uses special welding wire (contain the core welding wire and do not contain the core welding wire) by submerged arc welding machine, that welding wire built-up welding is surperficial at the center standard shaft, forms the working lining of composite roll.Its advantage is that technique is simple, but that shortcoming is alloying component is restricted, and alloy content is low, and the collars performance is low.
The hard alloy compound roller technology is that the carbide roll ring that will adopt powder metallurgy process to produce adopts insetting case technology that collars and center standard shaft are combined together to form composite roll.The advantage of this technology is the working lining that can access excellent performance, has the super-high wear-resistant performance.Its shortcoming is that the collars size is restricted, and is difficult to obtain the above collars of large scale diameter 400mm, and complex process, and product instructions for use environmental condition is strict, and easy fracture, particularly cost are too high, is difficult to promote.
Still the injection molding technical matters in research and development in addition, it is to pass through atomisation with smelting good alloy solution, directly be sprayed onto standard shaft surface, center, form composite roll, its advantage production efficiency high (according to 20 kilograms of relevant report working lining emitted doses per minute), metallographic structure is tiny, even, and anti-wear performance is high.Its shortcoming, complex process, equipment is complicated, has high input, and alloy content is restricted, is difficult to obtain high performance working lining collars, is prone to tissue looseness.
Summary of the invention
The objective of the invention is provides plasma spray composite roll, composite ring and manufacture method thereof in order to address the above problem; Its technical scheme is as follows:
A kind of plasma spray composite roll comprises roll standard shaft and alloy working lining, it is characterized in that: described roll standard shaft is revolving body, and described alloy working lining covers the outer surface of revolving body, and described alloy working lining is the plasma spray composite bed.
Described roll standard shaft is cylinder, and its material is the alloys in common use steel.
A kind of plasma spray composite ring comprises basic ring and the alloy working lining of collars, and it is characterized in that: described basic ring is revolving body, and described alloy working lining covers the outer surface of revolving body, and described alloy working lining is the plasma spray composite bed.
Described basic ring is torus, and its material is the alloys in common use steel.
The manufacture method of a kind of plasma spray composite roll and composite ring specifically comprises the following steps:
A: by standard shaft or the basic ring of machine tooling roll, the outer surface of standard shaft or basic ring is carried out machined, to remove surface impurity and size, guarantee bright and clean;
B: the alloy powder composition that the preparation surfacing is used,
C: center standard shaft or basic ring are preheated to 400～450 ℃ in heating furnace, then are installed on rotatable jig;
D: the alloy composite of drying in step b is packed in the magazine of Plasma Spraying Equipment; Regulate suitable technological parameter, adjust nozzle distance and hit axle or the surperficial approximately 10mm of basic ring, start the spray-welding machine surfacing and form the alloy working lining; And keep in the surfacing process 280-350 ℃ of center standard shaft or basic ring temperature;
E: crack in order to prevent roll surface, the composite roll of described shaping is placed in heating furnace, be no less than insulation 2 hours, when then cooling to the furnace below 150 ℃, come out of the stove.
Various powder sizes in alloy composite are the 100-200 order, and mechanical mixture is even, dry 30 minutes at 120-150 ℃ of environment before surfacing.
Technological parameter in steps d comprises electric current, air pressure at least, powder feed rate, spray gun amplitude of oscillation width, center standard shaft rotary speed, gas flow.
Beneficial effect of the present invention
1. the plasma spray composite roll (collars) that adopts the inventive method to make, have that arc temperature is high, the coefficient of overall heat transmission is large, good stability, the fusion penetration controllability is strong, by regulating relevant parameter, can freely adjust within the specific limits thickness, width, the hardness of layer.Utilize powder as spray material, can improve the selective of alloy designs, surfacing refractory material smoothly particularly, wear-resisting, high temperature resistant, the corrosion resistance of raising workpiece.
The plasma spray temperature is high, the heat affected area is little, there is argon shield in the surfacing district, can well adapt to the metal dust of various fusing points, solidify fast, the element segregation phenomenon that suppresses and avoided producing in the process of setting.
The plasma spray composite roll (collars) that adopts the inventive method to make, compare the forming modes such as centrifugal casting, submerged arc overlay welding, carbide alloy combination, injection molding, have working lining collars design of alloy convenient, the instructions for use that is content with very little, and metallographic structure is even, crystal grain is tiny, dense structure, anti-corrosion and wearability good, the moulding of surfacing working lining outward appearance is attractive in appearance, the dimensioned amount is little, and stock utilization is high;
The plasma spray composite roll (collars) that adopts the inventive method to make, the working lining collars of surfacing moulding is more than hardness need not any heat treatment just can directly reach hardness HRC60, therefore without heat treatment step;
4. plasma spray composite roll of the present invention (collars), both are combined into metallurgical binding working lining collars and center standard shaft (ring), and intensity is high, can guarantee that binder course has good bond strength.
5. the center standard shaft (ring) of plasma spray composite roll of the present invention (collars), 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, and the surfacing process is easy to realize mechanization and automation.
7, equipment investment is few, non-environmental-pollution.
Description of drawings
Fig. 1 is the structural representation of this plasma spray weldering composite roll;
Fig. 2 is the structural representation of this plasma spray weldering composite ring;
Fig. 3 is the surfacing state diagram of this plasma spray weldering composite roll manufacture method:
1. jigs in figure, 2. roller substrate, 3. the alloy working lining, 4. plasma gun, 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.
The specific embodiment
Embodiment one: referring to Fig. 1, a kind of plasma spray composite roll comprises roll standard shaft and alloy working lining, it is characterized in that: described roll standard shaft is revolving body, described alloy working lining covers the outer surface of revolving body, and described alloy working lining is the plasma spray composite bed.Described roll standard shaft is cylinder, and its material is the alloys in common use steel.
Embodiment two: referring to Fig. 2, a kind of plasma spray composite ring comprises basic ring and the alloy working lining of collars, and it is characterized in that: described basic ring is revolving body, described alloy working lining covers the outer surface of revolving body, and described alloy working lining is the plasma spray composite bed.Described basic ring is torus, and its material is the alloys in common use steel.
Embodiment three: referring to Fig. 3, the manufacture method of a kind of plasma spray composite roll and composite ring specifically comprises the following steps:
A: by standard shaft or the basic ring of machine tooling roll, the outer surface of standard shaft or basic ring is carried out machined, to remove surface impurity and size, guarantee bright and clean;
B: the alloy powder composition that the preparation surfacing is used,
C: center standard shaft or basic ring are preheated to 400～450 ℃ in heating furnace, then are installed on rotatable jig;
D: the alloy powder composition of drying in step b is packed in the magazine of Plasma Spraying Equipment; Regulate suitable technological parameter, adjust nozzle distance and hit axle or the surperficial approximately 10mm of basic ring, start the spray-welding machine surfacing and form the alloy working lining; And keep in the surfacing process 280-350 ℃ of center standard shaft or basic ring temperature;
E: crack in order to prevent roll surface, the composite roll of described shaping is placed in heating furnace, be no less than insulation 2 hours, when then cooling to the furnace below 150 ℃, come out of the stove.
Various powder sizes in alloy composite are the 100-200 order, and mechanical mixture is even, dry 30 minutes at 120-150 ℃ of environment before surfacing.
Technological parameter in steps d comprises electric current, air pressure at least, powder feed rate, spray gun amplitude of oscillation width, center standard shaft rotary speed, gas flow.
Claims (7)
1. a plasma spray composite roll, comprise roll standard shaft and alloy working lining, it is characterized in that: described roll standard shaft is revolving body, and described alloy working lining covers the outer surface of revolving body, and described alloy working lining is the plasma spray composite bed.
2. plasma spray composite roll according to claim 1, it is characterized in that: described roll standard shaft is cylinder, its material is the alloys in common use steel.
3. plasma spray composite ring comprises basic ring and the alloy working lining of collars, and it is characterized in that: described basic ring is revolving body, and described alloy working lining covers the outer surface of revolving body, and described alloy working lining is the plasma spray composite bed.
4. plasma spray composite ring according to claim 3, it is characterized in that: described basic ring is torus, its material is the alloys in common use steel.
5. the manufacture method of a plasma spray composite roll and composite ring specifically comprises the following steps:
A: by standard shaft or the basic ring of machine tooling roll, the outer surface of standard shaft or basic ring is carried out machined, to remove surface impurity and size, guarantee bright and clean;
B: the alloy powder composition that the preparation surfacing is used,
C: center standard shaft or basic ring are preheated to 400～450 ℃ in heating furnace, then are installed on rotatable jig;
D: the alloy powder composition of drying in step b is packed in the magazine of Plasma Spraying Equipment; Regulate suitable technological parameter, adjust nozzle distance and hit axle or the surperficial approximately 10mm of basic ring, start the spray-welding machine surfacing and form the alloy working lining; And keep in the surfacing process 280-350 ℃ of center standard shaft or basic ring temperature;
E: crack in order to prevent roll surface, the composite roll of described shaping is placed in heating furnace, be no less than insulation 2 hours, when then cooling to the furnace below 150 ℃, come out of the stove.
6. the manufacture method of plasma spray composite roll according to claim 5, it is characterized in that: the various powder sizes in alloy powder composition are the 100-200 order, and mechanical mixture is even, before surfacing 120-150 ℃ of environment oven dry 30 minutes.
7. the manufacture method of plasma spray composite roll according to claim 5, it is characterized in that: the technological parameter in steps d comprises electric current, air pressure at least, powder feed rate, spray gun amplitude of oscillation width, center standard shaft rotary speed, gas flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| 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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| 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 true CN103111469A (en) | 2013-05-22 |
| CN103111469B CN103111469B (en) | 2016-11-16 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105728922A (en) * | 2016-04-18 | 2016-07-06 | 华能国际电力股份有限公司 | Method suitable for plasma spray welding of nickel-based alloy powder on boiler pipeline |
| CN106637044A (en) * | 2016-12-09 | 2017-05-10 | 成都布雷德科技有限公司 | Method for preparing alloy-ceramic composite coating through plasma spray-welding and plasma spray-welding torch |
| 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 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102303213A (en) * | 2011-07-07 | 2012-01-04 | 安徽泰尔重工股份有限公司 | Production process of composite sliding plate |
| CN102618867A (en) * | 2012-03-19 | 2012-08-01 | 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 |
-
2013
- 2013-01-03 CN CN201310037712.6A patent/CN103111469B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102303213A (en) * | 2011-07-07 | 2012-01-04 | 安徽泰尔重工股份有限公司 | Production process of composite sliding plate |
| CN102618867A (en) * | 2012-03-19 | 2012-08-01 | 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105728922A (en) * | 2016-04-18 | 2016-07-06 | 华能国际电力股份有限公司 | Method suitable for plasma spray welding of nickel-based alloy powder on boiler pipeline |
| CN106637044A (en) * | 2016-12-09 | 2017-05-10 | 成都布雷德科技有限公司 | Method for preparing alloy-ceramic composite coating through plasma spray-welding and plasma spray-welding torch |
| 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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| CN103111469B (en) | 2016-11-16 |
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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. |