CN110293131A - A kind of heat resistant and wear resistant roller and its production technology - Google Patents
A kind of heat resistant and wear resistant roller and its production technology Download PDFInfo
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- CN110293131A CN110293131A CN201910580919.5A CN201910580919A CN110293131A CN 110293131 A CN110293131 A CN 110293131A CN 201910580919 A CN201910580919 A CN 201910580919A CN 110293131 A CN110293131 A CN 110293131A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
- B22D11/1287—Rolls; Lubricating, cooling or heating rolls while in use
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
- C21D1/30—Stress-relieving
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/38—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for roll bodies
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
-
- 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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
-
- 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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/129—Flame spraying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2267/00—Roll parameters
- B21B2267/26—Hardness of the roll surface
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Plasma & Fusion (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Child & Adolescent Psychology (AREA)
- Geometry (AREA)
- Coating By Spraying Or Casting (AREA)
- Rolls And Other Rotary Bodies (AREA)
Abstract
The present invention provides a kind of heat resistant and wear resistant roller and its production technologies, it is related to continuous casting of iron and steel and hot rolling technique field, roller includes roller matrix, welding layer and coating, the outer surface of roller matrix is welded with welding layer, the peripheral side of welding layer is coated with coating, and the material of coating is WC-Co material, constitutes welding material hardness HB≤280 of welding layer.Heat resistant and wear resistant roller provided by the invention is able to satisfy the expected service life requirement in production, reduces manpower and material resources cost.
Description
Technical field
The present invention relates to continuous casting of iron and steel and hot rolling technique field, in particular to a kind of heat resistant and wear resistant roller and its
Production technology.
Background technique
Since the roller of continuous casting and hot rolling position subjects high temperature corrosion and transmission abrasion, so that these rollers use the longevity
Life frequently replaces roller far from the expected requirement of satisfaction, bring manpower and material resources higher cost.Based on this, mention
Become the urgent need of production for the roller of long service life.
Summary of the invention
The purpose of the present invention is to provide a kind of heat resistant and wear resistant rollers.The roller is able to satisfy the expection in production and uses the longevity
Life requires, and reduces manpower and material resources cost.
Another object of the present invention is to provide a kind of production technologies of heat resistant and wear resistant roller.Process design letter
Single, science can play the Wear-resistant, high-temperature resistant performance of heat resistant and wear resistant roller.
The present invention is implemented as follows:
A kind of heat resistant and wear resistant roller, roller include roller matrix, welding layer and coating, the outer surface welding of roller matrix
There is welding layer, the peripheral side of welding layer is coated with coating, and the material of coating is WC-Co material, and WC-Co material is powder, partial size
It is 5-30 microns, constitutes welding material hardness HB≤280 of welding layer, Ying Du≤HV1300 of coating.
In the present invention using in preferred embodiment, the material of above-mentioned roller matrix is solderable carbon steel or can weld low conjunction
Golden structural steel, the welding material of welding layer are built-up welding welding material.
In the present invention using in preferred embodiment, above-mentioned built-up welding welding material is OCr17 built-up welding material, with quality %
Meter, the chemical component of OCr17 built-up welding material includes Cr:16.5-19.0%, Mn:0.8-1.5%, C:0-0.08%, Si:0.5-
1.0%, P:0-0.02% and S:0-0.02%, the effective thickness of welding layer are 2-5mm.
In the present invention using in preferred embodiment, the material of above-mentioned coating is WC-15Co, coating with a thickness of 0.05-
0.5mm。
A kind of production technology of heat resistant and wear resistant roller, including the following steps successively carried out: first in the roller matrix
Outer round surface built-up welding, the welding materials of hardness HB≤280 forms welding layer, then sprays WC-Co material in the peripheral side of welding layer
Material, Ying Du≤HV1300 of coating.
In the present invention using in preferred embodiment, above-mentioned further includes roughing roller matrix before carrying out built-up welding, thick to add
Work roller matrix specifically includes: the outer circle of roller matrix is machined directly to the size before built-up welding, other positions of roller matrix
Stay machining allowance.
In the present invention using in preferred embodiment, above-mentioned carrying out heap postwelding further includes stress relief annealing, and destressing is moved back
Fire specifically includes: by the roller matrix of heap postwelding at 470-500 DEG C of temperature stress relief annealing 3 hours, be cooled to furnace body
It comes out of the stove after 100-150 DEG C air-cooled, then carries out finishing processing, hardness HB≤280 of the welding layer after finishing.
In the present invention using in preferred embodiment, above-mentioned production technology further includes being cleaned and being sprayed after finishing
Sand, cleaning and sandblasting specifically include: after finishing, cleaning carried out to welding layer surface and is deoiled, sandblasting plucking.
In the present invention using in preferred embodiment, the method for the peripheral side spraying WC-Co material of above-mentioned welding layer is used
Supersonic flame spraying method, Ying Du≤HV1300 of coating.
In the present invention using in preferred embodiment, above-mentioned production technology further includes in the roller for being coated with WC-Co material
Then roller is kept the temperature 3~5 hours heat preservation solidifications by brushing high temperature hole sealing agent in outer surface at 220~350 DEG C；
Preferably, roller is put into vacuum drying oven inside holding 4 hours of 250 DEG C, naturally cools to room temperature to furnace body and comes out of the stove.
Compared with prior art, the beneficial effects of the present invention are:
Roller section material provided by the invention uses three-decker, and every layer of structure has their own characteristics.Wherein, outermost layer is straight
Connect and be in contact with external high temperature environment, corrosive environment, rolling friction, use WC-Co material, WC have special corrosion resistance,
High rigidity and compression strength, wearability is high, and Co material has good toughness, can be used as the bonding agent of WC, makes WC particle
Between have firm intensity, Ying Du≤HV1300 of coating；Roller substrate had used welding carbon steel or low-alloy structural steel both
Roller matrix strength, which can be met, again can meet the solderability of roller matrix；The alloy of the higher hardness of intermediate built-up welding HB≤280 can
To resist pressure when surface hard alloy WC-Co indentation, while also there is certain toughness, avoid generating wearing layer cracking and falls
Block.In addition, WC also has heat-blocking action, keep roller inner temperature relative temperature lower, substrate generates crack phenomenon and substantially reduces.
Roller uses three-decker, so that roller bulk life time greatly improves.By providing a kind of production work of heat resistant and wear resistant roller
Skill, the significant increase whole high temperature resistant and wear-resisting property of roller.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the roller sectional side elevation of the embodiment of the present invention 1.
Icon: 100- roller；110- roller matrix；120- welding layer；130- coating.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside", " clockwise ", " counterclockwise " is orientation based on the figure
Or positional relationship or the invention product using when the orientation or positional relationship usually put, be merely for convenience of description this
Invention and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific side
Position construction and operation, therefore be not considered as limiting the invention.In addition, term " first ", " second ", " third " etc. are only used
It is described in distinguishing, is not understood to indicate or imply relative importance.
In addition, the terms such as term "horizontal", "vertical", " pendency " are not offered as requiring component abswolute level or pendency, and
It is that can be slightly tilted.It is not to indicate the structure if "horizontal" only refers to that its direction is more horizontal with respect to for "vertical"
It has to fully horizontally, but can be slightly tilted.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be indirect by intermediary
It is connected, can be the connection inside two elements.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in the present invention.
A kind of heat resistant and wear resistant roller, roller include roller matrix, welding layer and coating, the outer surface welding of roller matrix
There is welding layer, the peripheral side of welding layer is coated with coating, and the material of coating is WC-Co material, constitutes the welding material of welding layer
Hardness HB≤280.
The material of roller matrix is solderable carbon steel or solderable low-alloy structural steel, and the welding material of welding layer uses heap
Weld welding material.The material of roller matrix is Q345, Q390, any one in 35CrMo and 42CrMo, in other embodiments
In, the material of roller matrix is also possible to other solderable carbon steels or solderable low-alloy structural steel.
Further, built-up welding welding material be OCr17 built-up welding material, in terms of quality %, OCr17 built-up welding material chemistry at
Divide includes Cr:16.5-19.0%, Mn:0.8-1.5%, C:0-0.08%, Si:0.5-1.0%, P:0-0.02% and S:0-
0.02%, the effective thickness of overlay cladding is 2-5mm.The material of the overlay cladding is ferrite substrate, belongs to iron with roller substrate
Ferritic is conducive to overlay cladding and is relatively easy to together with roller welding.The hardness of overlay cladding is higher, can give outermost painting
Layer provides enough support drags.
Further, the material of coating be NiCrBSi or WC-15Co, preferably WC-15Co, coating with a thickness of 0.05-
0.12mm.Talide material has special corrosion resistance, high rigidity and compression strength, and wear-resisting property is high, but
Itself it is a kind of agglutinating property material, enbrittles, needs to apply in conjunction with ductile metal.Ductile metal cobalt can be used as
The good binder of WC, prepares the coating of anti-friction abrasion.The WC coating materials that 15% is accounted for using cobalt content, are conducive to Co and WC
Abundant bonding, guarantee the enough tensile strength of coating, be unlikely to figure layer embrittlement.Due to Ying Du≤HV1300 of coating, coating
There are enough wearabilities, so roller surfaces spray the wear resistence that relatively thin coating just fully meets roller.
A kind of production technology of heat resistant and wear resistant roller, including the following steps successively carried out: first roughing roller matrix,
Welding layer is formed in the outer round surface built-up welding welding material of roller matrix again, stress relief annealing is cleaned after finishing, is sprayed
Sand finally sprays WC-Co material in the peripheral side of welding layer.
Further, above-mentioned roughing roller matrix specifically includes: before the outer circle of roller matrix is machined directly to built-up welding
Size, machining allowance is stayed at other positions of roller matrix.
Further, above-mentioned stress relief annealing specifically includes: the roller matrix of heap postwelding is gone down at 470-500 DEG C of temperature
It stress annealing 3 hours, comes out of the stove after furnace body is cooled to 100-150 DEG C air-cooled, then carries out finishing processing, the weldering after finishing
Connect hardness HB≤280 of layer.The purpose of annealing is the stress generated when removing welding, and hardness HB≤280, which are conducive to improve, resists
Apply the ability being laminated into.
Further, cleaned after above-mentioned finishing, sandblasting specifically includes: after finishing, to welding layer surface into
Row cleaning is deoiled, sandblasting plucking.Surface clean, which is deoiled, can prevent sprayed on material and welding layer from being isolated out by greasy dirt, cause to contact
It is bad, keep the contact strength of contact surface impacted；Sandblasting plucking is conducive to increase the contact area and mutually of coating and welding layer
Engagement force is conducive to increase the interface binding power between coating and welding layer.
Further, the method for the peripheral side spraying WC-Co material of above-mentioned welding layer uses supersonic flame spraying method.
Supersonic flame spraying, so that the bonding agent Co of spray coating powder, at semi-molten state, under the injection of high-speed jet, spraying particle becomes
Shape is securely joined with welding layer surface, hard degree≤HV1300 of coating.
It is easily decomposed in addition, tungsten carbide/cobalt material is heated, tungsten carbide coating structure and performance are very quick for preparation process
Sense, can be had using supersonic flame spraying method in the case where no excessive heat tungsten carbide/cobalt metal ion
The accelerated particle of effect moves.The high-speed motion of powder particle greatly reduces the residence time in high temperature, to make in coating
The content of oxide is lower, the composition of chemical component and phase stability with higher, improves the combination adornment degree of particle, reduces
The porosity of coating, also improves residual stress in coating.
Further, above-mentioned production technology further includes in the rollers outer surface brushing high temperature hole sealing for being coated with WC-Co material
Then roller is kept the temperature 3~5 hours heat preservation solidifications by agent at 220~350 DEG C；
Preferably, roller is put into vacuum drying oven inside holding 4 hours of 250 DEG C, naturally cools to room temperature to furnace body and comes out of the stove.It is high
Warm hole sealing agent can effectively fill up a large amount of coating hole, effectively avoid the intrusion of corrosion, be conducive to reduce friction, enhance coating
Anti-corrosion rub resistance is conducive to hole sealing agent and gos deep into hole, cap holes in vacuum drying oven internal heating curing hole sealing agent.
Embodiment
Shown in referring to Fig.1, it is roller matrix 110, welding layer respectively that the structure of roller 100, which includes three layers from inside to outside,
120 and coating 130.Wherein, the material of roller matrix 110 is Q390, and welding layer 120 is the weldering of 430 trade mark of Shanghai Si Taili company
Silk, the chemical component of welding wire be Cr:16.5~19.0, Mn:0.8~1.5, C≤0.08, Si:0.5~1.0, P≤0.02, S≤
0.02；The material of coating is WC-15Co, Ying Du≤HV1300 of coating.
The production method of heat resistant and wear resistant roller, specifically includes: the roller matrix 110 of first roughing roller 100 makes roller
The outer circle of matrix 110 is machined directly to the size before built-up welding, and machining allowance is stayed in other places.In the outer circle table of roller matrix 110
Roller 100 is put into annealing furnace by 430 wlding of surface build-up welding, postwelding, and 480 DEG C keep the temperature 3 hours, is then cooled to 150 DEG C with the furnace and is gone out
Furnace is air-cooled, and the surface hardness of built-up welding material is HB294；It is finished after cooling, then cleans oil removing, sandblasting plucking；It is right again
The outer surface of roller 100 carries out supersonic spray coating WC-15Co material, and then brushing high temperature hole sealing agent is placed in vacuum degree and is less than
In the vacuum drying oven of 30Pa, 4 hours hole sealing agents that are heating and curing are kept the temperature at 250 DEG C, room temperature is then cooled to the furnace, measures coating
Surface hardness is HV1394.
Compared with Nanyang Hanye Special Steel Co., Ltd.'s original roller, the application steel transportation amount reaches Wearing-resistant roller made from the present embodiment
To 2500 furnaces, and former roller steel transportation amount is only 500 furnaces.
These are only the preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of heat resistant and wear resistant roller, which is characterized in that roller includes roller matrix, welding layer and coating, the roller base
The outer surface of body is welded with the welding layer, and the peripheral side of the welding layer is coated with the coating, and the material of the coating is
WC-Co material, the WC-Co material are powder, and partial size is 5-30 microns, constitute the welding material hardness HB of the welding layer≤
280, Ying Du≤HV1300 of the coating.
2. heat resistant and wear resistant roller according to claim 1, which is characterized in that the material of the roller matrix is solderable
Carbon steel or solderable low-alloy structural steel, the welding material of the welding layer are built-up welding welding material.
3. heat resistant and wear resistant roller according to claim 2, which is characterized in that the built-up welding welding material is OCr17 heap
Wlding matter, in terms of quality %, the chemical component of the OCr17 built-up welding material includes Cr:16.5-19.0%, Mn:0.8-1.5%,
C:0-0.08%, Si:0.5-1.0%, P:0-0.02% and S:0-0.02%, the effective thickness of the welding layer are 2-5mm.
4. heat resistant and wear resistant roller according to claim 1-3, which is characterized in that the material of the coating is
WC-15Co, the coating with a thickness of 0.05-0.5mm.
5. a kind of production technology of heat resistant and wear resistant roller as described in claim 1, which is characterized in that including what is successively carried out
Following steps: first the welding material in outer round surface built-up welding hardness HB≤280 of the roller matrix forms welding layer, then is welding
Meet the peripheral side spraying WC-Co material of layer, Ying Du≤HV1300 of coating.
6. production technology according to claim 5, which is characterized in that further include roughing roller base before carrying out built-up welding
Body, the roughing roller matrix specifically include: the outer circle of the roller matrix is machined directly to the size before built-up welding, it is described
Stay machining allowance in other positions of roller matrix.
7. production technology according to claim 5, which is characterized in that carry out heap postwelding further include stress relief annealing, institute
Stress relief annealing is stated to specifically include: by the roller matrix of heap postwelding at 470-500 DEG C of temperature stress relief annealing 3 hours, to furnace
Body is come out of the stove air-cooled after being cooled to 100-150 DEG C, then carry out finishing processing, and the hardness HB of the welding layer after the finishing≤
280。
8. production technology according to claim 6, which is characterized in that the production technology further includes carrying out after finishing
Cleaning and sandblasting, the cleaning and sandblasting specifically include: after finishing, carrying out cleaning to welding layer surface and deoil, sandblasting is drawn
Hair.
9. production technology according to claim 5, which is characterized in that the peripheral side of the welding layer sprays WC-Co material
Method use supersonic flame spraying method.
10. production technology according to claim 5, which is characterized in that the production technology further includes being coated with WC-Co
Roller, is then kept the temperature 3~5 hours heat preservation solidifications by the rollers outer surface brushing high temperature hole sealing agent of material at 220~350 DEG C；
Preferably, roller is put into vacuum drying oven inside holding 4 hours of 250 DEG C, naturally cools to room temperature to furnace body and comes out of the stove.
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| CN201910580919.5A CN110293131B (en) | 2019-06-27 | 2019-06-27 | High-temperature-resistant wear-resistant roller and production process thereof |
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| CN201910580919.5A CN110293131B (en) | 2019-06-27 | 2019-06-27 | High-temperature-resistant wear-resistant roller and production process thereof |
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| CN110293131A true CN110293131A (en) | 2019-10-01 |
| CN110293131B CN110293131B (en) | 2021-02-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111545745A (en) * | 2020-05-19 | 2020-08-18 | 马鞍山市恒泰重工机械有限公司 | Centrifugal composite roller surface high-temperature-resistant coating and production process thereof |
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