CN115505717B - Roll center Kong Cuihuo method - Google Patents
Roll center Kong Cuihuo method Download PDFInfo
- Publication number
- CN115505717B CN115505717B CN202211193009.XA CN202211193009A CN115505717B CN 115505717 B CN115505717 B CN 115505717B CN 202211193009 A CN202211193009 A CN 202211193009A CN 115505717 B CN115505717 B CN 115505717B
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- CN
- China
- Prior art keywords
- roller
- center
- quenching
- hard alloy
- central hole
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Classifications
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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
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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
- C21D1/06—Surface hardening
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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
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a roller center Kong Cuihuo method, which comprises the following steps: (1) clamping one end of a roller, and supporting the other end of the roller by a bracket to obtain a pre-ground reference excircle; (2) aligning the center hole of the roller with the hard alloy center, and then axially pressurizing and locking; (3) rotating a roller on a machine tool at a high speed, enabling a roller center hole and the hard alloy center to perform relative motion so as to generate friction heat, and then spraying water for cooling; (4) and (5) repeating the steps (1) - (3) to finish quenching the central hole at the other end of the roller. The quenching method for the central hole of the roller has the advantages that the process is simple, the original integral structure of the roller is not affected, particularly, the mode is uniform in heating, the hardness uniformity after quenching is good, the wear resistance of the central hole in the later use process is ensured to be uniform, and the precision deviation is not generated.
Description
Technical Field
The invention belongs to the technical field of heat treatment of roller center holes, and particularly relates to a roller center hole quenching method.
Background
At present, except for the final heat treatment of the Senamil roller, an integral quenching mode (the central hole directly reaches the quenching hardness), and the final heat treatment of the rest rollers adopts a surface quenching mode (the central hole only has the quenching hardness), so the quenching hardness is generally ensured by the following mode.
(1) And embedding a quenching center hole choke plug.
The disadvantage of this approach is that: the process is complex, and the embedded choke plug has certain influence on the original integral structure of the roller.
(2) And adopting a flame gun to perform flame quenching on the central hole.
The disadvantage of this approach is that: the heating is uneven, the hardness uniformity after quenching is very poor, so that the abrasion of the central hole is inconsistent in the later use process, and the precision deviation is generated.
Disclosure of Invention
The invention aims to solve the problems, and provides a roller center hole quenching method which is simple in process and free from influencing the original integral structure of a roller, and particularly has good hardness uniformity after quenching.
The technical scheme for realizing the aim of the invention is as follows: a roll center Kong Cuihuo method having the steps of:
(1) clamping one end of a roller, and supporting the other end of the roller by a bracket to obtain a pre-ground reference excircle;
(2) aligning the center hole of the roller with the hard alloy center, and then axially pressurizing and locking;
(3) rotating a roller on a machine tool at a high speed, enabling a roller center hole and the hard alloy center to perform relative motion so as to generate friction heat, and then spraying water for cooling;
(4) and (5) repeating the steps (1) - (3) to finish quenching the central hole at the other end of the roller.
The hardness of the hard alloy tip in the step (2) is 82-88 HRC, and the roughness Ra is 3-3.5 mu m.
The rotating speed of the high-speed rotation in the step (3) is 800-1500 rpm, and the time is 30-60 min.
The invention has the positive effects that: the quenching method for the central hole of the roller has the advantages that the process is simple, the original integral structure of the roller is not affected, particularly, the mode is uniform in heating, the hardness uniformity after quenching is good, the wear resistance of the central hole in the later use process is ensured to be uniform, and the precision deviation is not generated.
Detailed Description
Example 1
The roll center Kong Cuihuo method of this embodiment is specifically as follows:
(1) one end (hereinafter referred to as an end A) of the roller is clamped, and the other end (hereinafter referred to as an end B) of the roller is used for supporting a pre-ground reference excircle by a bracket.
(2) And (3) aligning the center hole of the end B of the roller with the hard alloy center, and then axially pressurizing and locking.
The hardness of the hard alloy tip is 85HRC, and the roughness Ra is 3.2 mu m.
(3) The roller is rotated on a machine tool at a high speed of 1000rpm for 45min, so that the center hole at the end B of the roller and the hard alloy center do relative motion to generate friction heat, and then water spray cooling is performed.
(4) And (5) repeating the steps (1) - (3) to finish quenching the central hole at the end A of the roller.
Through detection, the roller center Kong Yingdu after quenching by the method can reach 60-61 HSD, and the hardness uniformity is less than or equal to 2HSD.
Claims (1)
1. A roll center Kong Cuihuo method characterized by the steps of:
(1) clamping one end of a roller, and supporting the other end of the roller by a bracket to obtain a pre-ground reference excircle;
(2) aligning the center hole of the roller with the hard alloy center, and then axially pressurizing and locking; the hardness of the hard alloy tip is 82-88 HRC, and the roughness Ra is 3-3.5 mu m;
(3) rotating a roller on a machine tool at a high speed, enabling a roller center hole and the hard alloy center to perform relative motion so as to generate friction heat, and then spraying water for cooling; the rotating speed of the high-speed rotation is 800-1500 rpm, and the time is 30-60 min;
(4) and (5) repeating the steps (1) - (3) to finish quenching the central hole at the other end of the roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211193009.XA CN115505717B (en) | 2022-09-28 | 2022-09-28 | Roll center Kong Cuihuo method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211193009.XA CN115505717B (en) | 2022-09-28 | 2022-09-28 | Roll center Kong Cuihuo method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115505717A CN115505717A (en) | 2022-12-23 |
| CN115505717B true CN115505717B (en) | 2023-06-23 |
Family
ID=84506194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211193009.XA Active CN115505717B (en) | 2022-09-28 | 2022-09-28 | Roll center Kong Cuihuo method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115505717B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1081106C (en) * | 1997-10-24 | 2002-03-20 | 地质矿产部华东石油地质局第六普查勘探大队 | Pipe friction welding and welding area welding heat treatment method and device |
| US6168067B1 (en) * | 1998-06-23 | 2001-01-02 | Mcdonnell Douglas Corporation | High strength friction stir welding |
| JP4351024B2 (en) * | 2003-10-30 | 2009-10-28 | 住友軽金属工業株式会社 | Friction stir welding method for heat-treatable aluminum alloy material |
| CN101649376A (en) * | 2008-08-14 | 2010-02-17 | 江阴兴鼎石油管件有限公司 | Deformation heat treatment method of petroleum drill pipe friction welding joint |
| CN111593180A (en) * | 2020-05-29 | 2020-08-28 | 江苏大学 | Workpiece surface strengthening method and device based on frictional heat |
-
2022
- 2022-09-28 CN CN202211193009.XA patent/CN115505717B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN115505717A (en) | 2022-12-23 |
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