CN104513887B - A kind of trolley resistance furnace method for annealing to polishing roll - Google Patents
A kind of trolley resistance furnace method for annealing to polishing roll Download PDFInfo
- Publication number
- CN104513887B CN104513887B CN201410822862.2A CN201410822862A CN104513887B CN 104513887 B CN104513887 B CN 104513887B CN 201410822862 A CN201410822862 A CN 201410822862A CN 104513887 B CN104513887 B CN 104513887B
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- CN
- China
- Prior art keywords
- roll
- annealing
- resistance furnace
- polishing
- antioxidizing paint
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Classifications
-
- 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
-
- 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
- C21D1/68—Temporary coatings or embedding materials applied before or during heat treatment
- C21D1/70—Temporary coatings or embedding materials applied before or during heat treatment while heating or quenching
-
- 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
Abstract
The invention discloses a kind of trolley resistance furnace method for annealing to polishing roll, relate to field of metallurgy, including: aluminium powder, clay and machine oil are mixed according to the ratio of 5:2:15 and stir, is fabricated to antioxidizing paint；Roller surface is pre-processed, by antioxidizing paint uniform application at whole roller surface；The roll of surface smear antioxidizing paint is loaded trolley resistance furnace, and with pillow iron pave the body of roll make the body of roll leave drop-bottom and the roll neck to roll be supported after roll is made annealing treatment.Use when the technical scheme that the present invention provides is suitable to make annealing treatment polishing roll, be possible to prevent roll oxidation and decarbonization and deformation in annealing process, improve case hardness and wearability.
Description
Technical field
The present invention relates to field of metallurgy, particularly relate to a kind of trolley resistance furnace method for annealing to polishing roll.
Background technology
In smelter, the annealing of roll is a requisite procedure in roll manufacture process, generally in the chemical composition of its outer layer of roll, quality containing C is for more than 3.0% and below 4.0%, and the exposed rich chromium cast iron of roller surface and high nickel chromium triangle material inevitably occur when heating to aoxidize and decarburization.General roll is in annealing process, there is surface oxidation, generate substantial amounts of iron scale, and form decarburized layer at roller surface, the surface-carburized layer making polishing roll is thicker, and in annealing process, it is easily caused roll deformation, thus causes that polishing roll off-dimension, case hardness are low, wearability is poor.
Summary of the invention
The technical issues that need to address of the present invention are to provide a kind of trolley resistance furnace method for annealing to polishing roll, are possible to prevent roll oxidation and decarbonization and deformation in annealing process, improve case hardness and wearability.
For solving above-mentioned technical problem, the technical solution used in the present invention is: a kind of trolley resistance furnace method for annealing to polishing roll, and the material of described polishing roll is rich chromium cast iron and high nickel chromium triangle material, including:
Step A, mixes by aluminium powder, clay and machine oil according to the ratio of 5:2:15 and stirs, being fabricated to antioxidizing paint；
Step B, pre-processes roller surface, by antioxidizing paint uniform application at whole roller surface；
Step C, loads trolley resistance furnace by the roll of surface smear antioxidizing paint, and with pillow iron pave the body of roll make the body of roll leave drop-bottom and the roll neck to roll be supported after roll is made annealing treatment.
The present invention further improvement is that: the thickness of the antioxidizing paint smeared at roller surface is 0.2 millimeter～1 millimeter.
The present invention further improvement is that: the pretreatment described in step B includes: clears up whole roller surface, uses oilhole and the keyway at the ceramic fibre closure each position of roll neck.
The present invention further improvement is that: selects pillow iron according to the specification of the roll of surface smear antioxidizing paint, and carries out roll quantity and the putting position of roll each roll of specifications design made annealing treatment as required；
According to the putting position of each roll of design, roll is placed on the table top of chassis, paves the body of roll with the pillow iron selected and make the body of roll leave drop-bottom, and the roll neck of roll is supported, make roll location stable equilibrium.
Owing to using technique scheme, the technological progress acquired by the present invention is: be possible to prevent roll oxidation and decarbonization and deformation in annealing process, improves case hardness and wearability.
The thickness of the antioxidizing paint smeared at roller surface is 0.2 millimeter～1 millimeter, has both been possible to prevent polishing roll oxidation and decarbonization in annealing process, it is also possible to when making annealing, roll heat conduction is unaffected；Ceramic fibre is used oilhole and the keyway at each for roll neck position to be blocked, oilhole and the temperature of keyway of polishing roll roll neck each several part in annealing process can be reduced, prevent from causing the oilhole of roll neck each several part and keyway deformation because temperature is higher, so that the precision of the oilhole at each position of roll neck and splined portion is higher；When chassis lower floor prevents roll, pave the body of roll with the pillow iron selected and make the body of roll leave drop-bottom so that when roll is made annealing treatment, the temperature of roll is controlled, pad roll neck position, it is ensured that roll neck pad is firm, seamless and too high without pad, prevents from deforming in roll heating process.
Accompanying drawing explanation
Fig. 1 is a kind of flow chart about trolley resistance furnace to the method for annealing of polishing roll that the embodiment of the present invention provides.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is described in further details:
A kind of trolley resistance furnace method for annealing to polishing roll, wherein, the material of polishing roll is rich chromium cast iron and high nickel chromium triangle material, as it is shown in figure 1, the method comprises the following steps:
Step A, uses aluminium powder, clay and machine oil mix according to the ratio of 5:2:15 and stir, is fabricated to antioxidizing paint.During polishing roll is made annealing treatment, it is easily caused polishing roll surface oxidation decarburization, therefore this technology uses aluminium powder, clay and machine oil make antioxidizing paint to spread upon material is rich chromium cast iron and the roller surface of high nickel chromium triangle, prevent roll oxidation and decarbonization in annealing process, it is also possible to when making to make annealing treatment, roll heat conduction is unaffected.
Step B, by antioxidizing paint uniform application before whole roller surface, roller surface is pre-processed, concrete, whole roller surface is cleaned, ensure that roller surface cleaning without dirt, then uses oilhole and the keyway at the ceramic fibre closure each position of roll neck, then by the antioxidizing paint uniform application that configures in proportion and stir at whole roller surface.
Ceramic fibre is used oilhole and the keyway at each for roll neck position to be blocked, oilhole and the temperature of keyway of polishing roll roll neck each several part in annealing process can be reduced, prevent from causing the oilhole of roll neck each several part and keyway deformation because temperature is higher, so that the precision of the oilhole at each position of roll neck and splined portion is higher.
It addition, the thickness of the antioxidizing paint smeared at roller surface is 0.2 millimeter～1 millimeter, so it is possible to prevent polishing roll oxidation and decarbonization in annealing process.
Step C, loads trolley resistance furnace by roll, and with pillow iron pave the body of roll make the body of roll leave drop-bottom and the roll neck to roll be supported after roll is made annealing treatment.
Concrete, step C includes following sub-step: step C1, selects pillow iron according to the specification of the roll of surface smear antioxidizing paint, and carries out roll quantity and the putting position of roll each roll of specifications design made annealing treatment as required；Step C2, putting position according to each roll of design, roll is placed on the table top of chassis, paving the body of roll with the pillow iron selected makes the body of roll leave drop-bottom, and the roll neck of roll is supported, make roll without rocking or play, pad roll neck simultaneously, make roll neck seamless with trolley surface, and roll neck is without the too high phenomenon of pad.
After roll is placed on chassis, chassis is pushed resistance furnace or firing platform stopping switch makes chassis enter resistance furnace, close the fire door of trolley resistance furnace, roll is added annealing.
Use that the embodiment of the present invention provides with the trolley resistance furnace method for annealing to polishing roll, before shove charge, roller surface is smeared antioxidizing paint, it is possible to prevent roll oxidation and decarbonization in annealing process, on request roll is carried out pad during shove charge, it is possible to prevent roll to deform in annealing process, roll after coming out of the stove spot size each to roll measured, all technical meets technological requirement, and the case hardness of roll and wearability are improved.
Claims (4)
1., with the trolley resistance furnace method for annealing to polishing roll, the material of described polishing roll is rich chromium cast iron and high nickel chromium triangle material, it is characterised in that including:
Step A, mixes by aluminium powder, clay and machine oil according to the ratio of 5:2:15 and stirs, being fabricated to antioxidizing paint；
Step B, pre-processes roller surface, by antioxidizing paint uniform application at whole roller surface；
Step C, loads trolley resistance furnace by the roll of surface smear antioxidizing paint, and with pillow iron pave the body of roll make the body of roll leave drop-bottom and the roll neck to roll be supported after roll is made annealing treatment.
A kind of trolley resistance furnace the most according to claim 1 method for annealing to polishing roll, it is characterised in that the thickness of the antioxidizing paint smeared at roller surface is 0.2 millimeter～1 millimeter.
A kind of trolley resistance furnace the most according to claim 1 method for annealing to polishing roll, it is characterised in that the pretreatment described in step B includes:
Whole roller surface is cleared up, uses oilhole and the keyway at the ceramic fibre closure each position of roll neck.
A kind of trolley resistance furnace the most according to claim 1 method for annealing to polishing roll, it is characterised in that step C includes:
The specification of the roll according to surface smear antioxidizing paint selects pillow iron, and carries out roll quantity and the putting position of roll each roll of specifications design made annealing treatment as required；
According to the putting position of each roll of design, roll is placed on the table top of chassis, paves the body of roll with the pillow iron selected and make the body of roll leave drop-bottom, and the roll neck of roll is supported, make roll location stable equilibrium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410822862.2A CN104513887B (en) | 2014-12-26 | 2014-12-26 | A kind of trolley resistance furnace method for annealing to polishing roll |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410822862.2A CN104513887B (en) | 2014-12-26 | 2014-12-26 | A kind of trolley resistance furnace method for annealing to polishing roll |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104513887A CN104513887A (en) | 2015-04-15 |
| CN104513887B true CN104513887B (en) | 2016-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410822862.2A Active CN104513887B (en) | 2014-12-26 | 2014-12-26 | A kind of trolley resistance furnace method for annealing to polishing roll |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105440750B (en) * | 2015-12-26 | 2017-12-01 | 东北大学 | Anti-oxidation protective coating and preparation and application during composite roll Preheating Core |
| CN107400844A (en) * | 2017-06-29 | 2017-11-28 | 太仓市钧胜轧辊有限公司 | A kind of surface maintenance technology for roll |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU709579A1 (en) * | 1978-05-10 | 1980-01-15 | Предприятие П/Я В-2120 | Glass protecting coating |
| CN101426938A (en) * | 2007-01-31 | 2009-05-06 | 中国科学院过程工程研究所 | An anti-oxidation coating for steel and method of protecting steel from oxidation |
| CN102352431A (en) * | 2011-10-17 | 2012-02-15 | 中钢集团邢台机械轧辊有限公司 | Large-scale high-chrome cast iron roller permissible differential temperature heat treatment |
-
2014
- 2014-12-26 CN CN201410822862.2A patent/CN104513887B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU709579A1 (en) * | 1978-05-10 | 1980-01-15 | Предприятие П/Я В-2120 | Glass protecting coating |
| CN101426938A (en) * | 2007-01-31 | 2009-05-06 | 中国科学院过程工程研究所 | An anti-oxidation coating for steel and method of protecting steel from oxidation |
| CN102352431A (en) * | 2011-10-17 | 2012-02-15 | 中钢集团邢台机械轧辊有限公司 | Large-scale high-chrome cast iron roller permissible differential temperature heat treatment |
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| Publication number | Publication date |
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| CN104513887A (en) | 2015-04-15 |
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