CN106939370A - A kind of straightening process of high-alloy steel roll - Google Patents
A kind of straightening process of high-alloy steel roll Download PDFInfo
- Publication number
- CN106939370A CN106939370A CN201710125301.0A CN201710125301A CN106939370A CN 106939370 A CN106939370 A CN 106939370A CN 201710125301 A CN201710125301 A CN 201710125301A CN 106939370 A CN106939370 A CN 106939370A
- Authority
- CN
- China
- Prior art keywords
- alloy steel
- steel roll
- straightening process
- deformation
- roll
- 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
- C21D1/18—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 present invention relates to a kind of straightening process of high-alloy steel roll, comprise the following steps：(1) quench：Preheating；Heating；Oil cooling is to 300 DEG C 350 DEG C；(2) align：Deformation high point is depressed into low spot；(3) it is tempered.The straightening process of the high-alloy steel roll of the present invention, the characteristics of being hardened using the high special Slow cooling of high alloy, can mitigate roller quenching deformation, can effectively reduce roller quenching surplus 1mm 1.5mm.
Description
Technical field
The present invention relates to roll manufacturing technology field, more particularly to a kind of straightening process of high-alloy steel roll.
Background technology
High-alloy steel roll due to its after quenching laser quenching hardened layer it is very deep, often whole cross section is all hardened.Quench-hardened case one
Denier is formed, and the deformation that generally quenching is formed is difficult to correction.In the past, to eliminate quenching distortion, conventional is using hot pressing after heating
Method, but to there is the heat time long for this method, and the consumption energy is big；Also, by temperature limited can not high-temperature heating, roll
Roller base plastic not enough, problems of crack is easily caused during pressure is rectified.Method also is exactly to increase surplus to unilateral
2-2.5mm, is removed in post-production.But such a process increases manufacturing cost.
The content of the invention
The technical problem to be solved in the present invention is：In order to overcome high-alloy steel roll due to its laser quenching hardened layer after quenching
Very deep, the deformation that generally quenching is formed is difficult to correct, and existing antidote high cost, the not good deficiency of effect, the present invention
A kind of straightening process of high-alloy steel roll is provided.
The technical solution adopted for the present invention to solve the technical problems is：A kind of straightening process of high-alloy steel roll, bag
Include following steps：
(1) quench：Preheating；Heating；Oil cooling is to 300 DEG C -350 DEG C；
(2) align：Deformation high point is depressed into low spot；
(3) it is tempered.
In step (1), control quenching cooling is fuel-displaced at 300 DEG C -350 DEG C.300 DEG C -350 DEG C this temperature ranges are in horse
Family name's body transition temperature Ms points are more on the upper side, in this temperature range, due to roll or austenitic state, there is extraordinary modeling
Property, it is easy to aligning.
In step (2), former high point is pressed onto -1mm to -1.5mm.Straightening operation be not deformation straightening, but will deformation
High point is depressed into low spot, and former high point is pressed onto -1mm to -1.5mm by control.Experiment is proved, can so be prevented because organization internal is accumulated
The energy of storage causes the later stage to re-form deformation.
After step (2), step (2) is aligned into later roll and uniformly placed.
Inventor has found that the reason for causing roll deformation is：Preheated plus hot and cold during high-alloy steel roller quenching
But the thermal stress that process is caused due to temperature field；During roller quenching structural stress from austenite to martensite transfor mation process.
These stress can be mitigated using other means, but can not be eliminated, and deformation of the roll in heating and quenching process is difficult to avoid that.
The straightening process of the high-alloy steel roll of the present invention, the characteristics of being hardened using the high special Slow cooling of high alloy can be with
Mitigate roller quenching deformation, can effectively reduce roller quenching surplus 1mm-1.5mm.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is a kind of schematic flow sheet of the straightening process of high-alloy steel roll of the present invention.
Embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These accompanying drawings are simplified schematic diagram, only with
Illustration illustrates the basic structure of the present invention, therefore it only shows the composition relevant with the present invention.
A kind of straightening process of high-alloy steel roll, comprises the following steps：
(1) quench：Preheating；Heating；Oil cooling is to 300 DEG C -350 DEG C；
(2) align：Deformation high point is depressed into low spot；
(3) it is tempered.
In step (1), control quenching cooling is fuel-displaced at 300 DEG C -350 DEG C.300 DEG C -350 DEG C this temperature ranges are in horse
Family name's body transition temperature Ms points are more on the upper side, in this temperature range, due to roll or austenitic state, there is extraordinary modeling
Property, it is easy to aligning.
In step (2), former high point is pressed onto -1mm to -1.5mm.Straightening operation be not deformation straightening, but will deformation
High point is depressed into low spot, and former high point is pressed onto -1mm to -1.5mm by control.Experiment is proved, can so be prevented because organization internal is accumulated
The energy of storage causes the later stage to re-form deformation.
After step (2), step (2) is aligned into later roll and uniformly placed.
Existing process is generally：Preheating-heating-oil cooling-tempering-inspection deformation-heating pressure rectifys-machining.This
The process of invention is：Preheating-heating-oil cooling is to 300 DEG C -350 DEG C-aligning-tempering.The reason for causing roll deformation exists
In：The thermal stress that preheating, heating and cooling procedure are caused due to temperature field during high-alloy steel roller quenching；Roller quenching mistake
In journey structural stress from austenite to martensite transfor mation process.These stress can be mitigated using other means, but can not be eliminated,
Deformation of the roll in heating and quenching process is difficult to avoid that.The straightening process of the high-alloy steel roll of the present invention, utilizes height conjunction
The characteristics of golden high special Slow cooling can harden, can mitigate roller quenching deformation, can effectively reduce roller quenching surplus
1mm-1.5mm。
Using the above-mentioned desirable embodiment according to the present invention as enlightenment, by above-mentioned description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property scope is not limited to the content on specification, it is necessary to its technical scope is determined according to right.
Claims (4)
1. a kind of straightening process of high-alloy steel roll, it is characterised in that comprise the following steps：
(1) quench：Preheating；Heating；Oil cooling is to 300 DEG C -350 DEG C；
(2) align：Deformation high point is depressed into low spot；
(3) it is tempered.
2. the straightening process of high-alloy steel roll as claimed in claim 1, it is characterised in that：In step (1), control quenching is cold
But, it is fuel-displaced at 300 DEG C -350 DEG C.
3. the straightening process of high-alloy steel roll as claimed in claim 1, it is characterised in that：In step (2), former height is pressed
- 1.5mm is arrived to -1mm.
4. the straightening process of high-alloy steel roll as claimed in claim 1, it is characterised in that：After step (2), by step
(2) later roll is aligned uniformly to place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710125301.0A CN106939370A (en) | 2017-03-04 | 2017-03-04 | A kind of straightening process of high-alloy steel roll |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710125301.0A CN106939370A (en) | 2017-03-04 | 2017-03-04 | A kind of straightening process of high-alloy steel roll |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106939370A true CN106939370A (en) | 2017-07-11 |
Family
ID=59468683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710125301.0A Pending CN106939370A (en) | 2017-03-04 | 2017-03-04 | A kind of straightening process of high-alloy steel roll |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106939370A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108285950A (en) * | 2018-02-11 | 2018-07-17 | 中冶陕压重工设备有限公司 | A kind of heat treatment method of control sendzimir mill working roll quenching distortion |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102363836A (en) * | 2011-11-11 | 2012-02-29 | 上海上大热处理有限公司 | Induction quenching method for Cr12MoV roller |
| CN106282520A (en) * | 2016-08-03 | 2017-01-04 | 浙江玛斯特汽配有限公司 | A kind of torsion-bar spring thermomechanical treatment process |
-
2017
- 2017-03-04 CN CN201710125301.0A patent/CN106939370A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102363836A (en) * | 2011-11-11 | 2012-02-29 | 上海上大热处理有限公司 | Induction quenching method for Cr12MoV roller |
| CN106282520A (en) * | 2016-08-03 | 2017-01-04 | 浙江玛斯特汽配有限公司 | A kind of torsion-bar spring thermomechanical treatment process |
Non-Patent Citations (1)
| Title |
|---|
| 夏期成: "《钢件淬火变形的分析及控制方法》", 30 November 1984 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108285950A (en) * | 2018-02-11 | 2018-07-17 | 中冶陕压重工设备有限公司 | A kind of heat treatment method of control sendzimir mill working roll quenching distortion |
| CN108285950B (en) * | 2018-02-11 | 2019-08-20 | 中冶陕压重工设备有限公司 | A kind of heat treatment method controlling the quenching distortion of sendzimir mill working roll |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| CB02 | Change of applicant information |
Address after: 213133 Xinbei Airport Industrial Park, Jiangsu, Changzhou Applicant after: A heavy group, Changzhou Huaye roll, Limited by Share Ltd Address before: 213133 Xinbei Airport Industrial Park, Jiangsu, Changzhou Applicant before: CHINA FIRST HEAVY INDUSTRIES GROUP HUAYE ROLLER CO., LTD. |
|
| CB02 | Change of applicant information | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170711 |
|
| RJ01 | Rejection of invention patent application after publication |