CN107177721A - A kind of quenching technology for surfaces for roll - Google Patents
A kind of quenching technology for surfaces for roll Download PDFInfo
- Publication number
- CN107177721A CN107177721A CN201710515625.5A CN201710515625A CN107177721A CN 107177721 A CN107177721 A CN 107177721A CN 201710515625 A CN201710515625 A CN 201710515625A CN 107177721 A CN107177721 A CN 107177721A
- Authority
- CN
- China
- Prior art keywords
- roll
- cooling
- cooled
- water
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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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
- C21D1/06—Surface hardening
-
- 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
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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 quenching technology for surfaces for roll, following steps are specifically included：Treat processing roll to be put into preheating furnace, be preheated to 180 220 DEG C；In the high-temperature smelting pot that the roll for preheating completion is put into, and with 50 70 DEG C/min programming rate, the temperature of roll is promoted to 960 1000 DEG C rapidly, then 2 4h of insulation；Roll after the completion of heating is taken out, then turn on blower fan and carry out air-cooled processing, then turn on water pump, cooling water is sprayed to roller surface, realize the cooling treatment that air-cooled, water cooling is combined, most roll is put into cooling pond and carries out water-cooled process at last, is cooled to normal temperature and completes quenching technical, through the above way, the present invention can neutralize cooling velocity, so that the hardness of gained roller surface is sufficient after quenching, service life is long, and use quality is high.
Description
Technical field
The present invention relates to a kind of process of surface treatment, more particularly to a kind of quenching technology for surfaces for roll.
Background technology
Roll is heat-treated, heating quenching, increases the hardness of roll, conventional roll product is in quenching cooling procedure
In, take the mode of air cooling or be blown into air-cooled mode being quenched, and this type of cooling causes quenching effect not good enough, mainly
Because cooling velocity is not enough, roll hardness is not enough, so that the technical indicator of design requirement can not be met, in addition with using oil quenching or
The quenching mode of water quenching, such quenching mode easily causes roll to ftracture again because cooling velocity is too fast, and roller quenching production is lost
Lose, cause to waste, be that enterprise brings economic loss.
The content of the invention
The present invention solves the technical problem of a kind of quenching technology for surfaces for roll is provided, cooling can be neutralized
Speed so that the hardness of gained roller surface is sufficient after quenching, and service life is long, and use quality is high.
In order to solve the above technical problems, one aspect of the present invention is：A kind of surface for roll is provided
Quenching technical, specifically includes following steps：
（1）, preheating：Treat processing roll to be put into preheating furnace, be preheated to 180-220 DEG C；
（2）, heating：It will preheat in the high-temperature smelting pot that is put into of roll completed, and with 50-70 DEG C/min programming rate, rapidly
The temperature of roll is promoted to 960-1000 DEG C, 2-4h is then incubated；
（3）, cooling：Roll after the completion of heating is taken out, blower fan is then turned on and carries out air-cooled processing, then turn on water pump, to
Roller surface sprays cooling water, realizes the cooling treatment that air-cooled, water cooling is combined, and most roll is put into cooling pond and enters water-filling at last
Cold treatment, is cooled to normal temperature and completes quenching technical.
In a preferred embodiment of the present invention, the air-cooled time is 3-5min.
In a preferred embodiment of the present invention, air-cooled, water cooling the combination cooling time is 6-8min.
In a preferred embodiment of the present invention, the wind chill temperatures of the blower fan are 40-60 DEG C, the water pump and cooling water
Water cooling temperature in pond is 10-30 DEG C.
The beneficial effects of the invention are as follows：A kind of quenching technology for surfaces for roll of the invention is first adopted during cooling
With air-cooled, combined afterwards using air-cooled, water cooling, finally by the way of water cooling, the effectively cooling velocity of neutralization materials, so that greatly
Width improves the hardness of product surface so that product service life extends, and use quality is improved.
Embodiment
Presently preferred embodiments of the present invention is described in detail below so that advantages and features of the invention can be easier to by
It will be appreciated by those skilled in the art that apparent clearly being defined so as to be made to protection scope of the present invention.
Embodiment 1：
A kind of quenching technology for surfaces for roll, specifically includes following steps：
（1）, preheating：Treat processing roll to be put into preheating furnace, be preheated to 180 DEG C；
（2）, heating：In the high-temperature smelting pot that the roll for preheating completion is put into, and with 50 DEG C/min programming rate, it will roll rapidly
The temperature of roller is promoted to 960 DEG C, is then incubated 4h；
（3）, cooling：Roll after the completion of heating is taken out, blower fan is then turned on and carries out air-cooled processing, the air-cooled temperature of the blower fan
Spend for 40 DEG C, the air-cooled time is 5min, then turns on water pump, spray cooling water to roller surface, realize air-cooled, water cooling phase
With reference to cooling treatment, air-cooled, water cooling the combination cooling time is 6min, and most roll is put into cooling pond and enters water-filling at last
Cold treatment, the temperature of the cooling water is 30 DEG C, is cooled to normal temperature and completes quenching technical.
Embodiment 2：
A kind of quenching technology for surfaces for roll, specifically includes following steps：
（1）, preheating：Treat processing roll to be put into preheating furnace, be preheated to 220 DEG C；
（2）, heating：In the high-temperature smelting pot that the roll for preheating completion is put into, and with 70 DEG C/min programming rate, it will roll rapidly
The temperature of roller is promoted to 1000 DEG C, is then incubated 2h；
（3）, cooling：Roll after the completion of heating is taken out, blower fan is then turned on and carries out air-cooled processing, the air-cooled temperature of the blower fan
Spend for 60 DEG C, the air-cooled time is 3min, then turns on water pump, spray cooling water to roller surface, realize air-cooled, water cooling phase
With reference to cooling treatment, air-cooled, water cooling the combination cooling time is 8min, and most roll is put into cooling pond and enters water-filling at last
Cold treatment, the temperature of the cooling water is 10 DEG C, is cooled to normal temperature and completes quenching technical.
Embodiment 3：
A kind of quenching technology for surfaces for roll, specifically includes following steps：
（1）, preheating：Treat processing roll to be put into preheating furnace, be preheated to 200 DEG C；
（2）, heating：In the high-temperature smelting pot that the roll for preheating completion is put into, and with 60 DEG C/min programming rate, it will roll rapidly
The temperature of roller is promoted to 980 DEG C, is then incubated 3h；
（3）, cooling：Roll after the completion of heating is taken out, blower fan is then turned on and carries out air-cooled processing, the air-cooled temperature of the blower fan
Spend for 50 DEG C, the air-cooled time is 4min, then turns on water pump, spray cooling water to roller surface, realize air-cooled, water cooling phase
With reference to cooling treatment, air-cooled, water cooling the combination cooling time is 7min, and most roll is put into cooling pond and enters water-filling at last
Cold treatment, the temperature of the cooling water is 20 DEG C, is cooled to normal temperature and completes quenching technical.
Prior art is different from, a kind of quenching technology for surfaces for roll of the invention first uses wind during cooling
It is cold, combined afterwards using air-cooled, water cooling, finally by the way of water cooling, the effectively cooling velocity of neutralization materials, so as to significantly carry
The high hardness of product surface so that product service life extends, and use quality is improved.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
Equivalent structure or equivalent flow conversion that bright description is made, or directly or indirectly it is used in other related technology necks
Domain, is included within the scope of the present invention.
Claims (4)
1. a kind of quenching technology for surfaces for roll, it is characterised in that specifically include following steps：
（1）, preheating：Treat processing roll to be put into preheating furnace, be preheated to 180-220 DEG C；
（2）, heating：It will preheat in the high-temperature smelting pot that is put into of roll completed, and with 50-70 DEG C/min programming rate, rapidly
The temperature of roll is promoted to 960-1000 DEG C, 2-4h is then incubated；
（3）, cooling：Roll after the completion of heating is taken out, blower fan is then turned on and carries out air-cooled processing, then turn on water pump, to
Roller surface sprays cooling water, realizes the cooling treatment that air-cooled, water cooling is combined, and most roll is put into cooling pond and enters water-filling at last
Cold treatment, is cooled to normal temperature and completes quenching technical.
2. the quenching technology for surfaces according to claim 1 for roll, it is characterised in that the air-cooled time is 3-
5min。
3. the quenching technology for surfaces according to claim 1 for roll, it is characterised in that described air-cooled, water cooling mixed
Conjunction cool time is 6-8min.
4. the quenching technology for surfaces according to claim 1 for roll, it is characterised in that the wind chill temperatures of the blower fan
For 40-60 DEG C, the water cooling temperature in the water pump and cooling pond is 10-30 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710515625.5A CN107177721A (en) | 2017-06-29 | 2017-06-29 | A kind of quenching technology for surfaces for roll |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710515625.5A CN107177721A (en) | 2017-06-29 | 2017-06-29 | A kind of quenching technology for surfaces for roll |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107177721A true CN107177721A (en) | 2017-09-19 |
Family
ID=59844616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710515625.5A Pending CN107177721A (en) | 2017-06-29 | 2017-06-29 | A kind of quenching technology for surfaces for roll |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107177721A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1211626A (en) * | 1997-09-18 | 1999-03-24 | 杨平生 | Quench hardening technique and device for cold-rolling roll |
| CN101403032A (en) * | 2008-11-12 | 2009-04-08 | 中国科学院金属研究所 | Thermal treatment process for quick cutting steel composite roll |
| CN102766737A (en) * | 2012-08-08 | 2012-11-07 | 耿震宇 | Method for preheating forged steel cold roll before induction quenching |
| CN202744595U (en) * | 2012-08-08 | 2013-02-20 | 耿震宇 | Induction quenching cooling water well for cold roll |
| CN103484612A (en) * | 2013-09-23 | 2014-01-01 | 无锡阳工机械制造有限公司 | Steel quenching method |
| CN105483354A (en) * | 2015-12-23 | 2016-04-13 | 中钢集团邢台机械轧辊有限公司 | Heat treatment method for large high-speed steel cold-rolled work roll |
-
2017
- 2017-06-29 CN CN201710515625.5A patent/CN107177721A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1211626A (en) * | 1997-09-18 | 1999-03-24 | 杨平生 | Quench hardening technique and device for cold-rolling roll |
| CN101403032A (en) * | 2008-11-12 | 2009-04-08 | 中国科学院金属研究所 | Thermal treatment process for quick cutting steel composite roll |
| CN102766737A (en) * | 2012-08-08 | 2012-11-07 | 耿震宇 | Method for preheating forged steel cold roll before induction quenching |
| CN202744595U (en) * | 2012-08-08 | 2013-02-20 | 耿震宇 | Induction quenching cooling water well for cold roll |
| CN103484612A (en) * | 2013-09-23 | 2014-01-01 | 无锡阳工机械制造有限公司 | Steel quenching method |
| CN105483354A (en) * | 2015-12-23 | 2016-04-13 | 中钢集团邢台机械轧辊有限公司 | Heat treatment method for large high-speed steel cold-rolled work roll |
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Application publication date: 20170919 |