CN104309172A - Surface quenching structure and quenching process of large-diameter cylindrical workpieces - Google Patents
Surface quenching structure and quenching process of large-diameter cylindrical workpieces Download PDFInfo
- Publication number
- CN104309172A CN104309172A CN201410566130.1A CN201410566130A CN104309172A CN 104309172 A CN104309172 A CN 104309172A CN 201410566130 A CN201410566130 A CN 201410566130A CN 104309172 A CN104309172 A CN 104309172A
- Authority
- CN
- China
- Prior art keywords
- quenching
- workpiece
- capping
- cylinder body
- diameter cylinder
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B1/00—Layered products having a general shape other than plane
- B32B1/08—Tubular products
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/14—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by a layer differing constitutionally or physically in different parts, e.g. denser near its faces
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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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
- C21D9/085—Cooling or quenching
Abstract
The invention relates to the technical field of workpiece quenching and particularly to a surface quenching structure and a quenching process of large-diameter cylindrical workpieces. The quenching structure comprises a cylindrical workpiece, a sealing cover and a thermal insulation material, wherein the thermal insulation material is filled in the cylindrical workpiece, and the end part of the cylindrical workpiece is sealed by the sealing cover. The quenching process of the cylindrical workpieces comprises the following steps: a. heating the quenching structure of the cylindrical workpieces to quenching temperature; b. throwing the quenching structure of the cylindrical workpieces into a quenching medium for quenching and cooling; c. annealing. The surface quenching structure and quenching process provided by the invention has the beneficial effects that compared with the existing temperature difference quenching process, the hardening depth which can be achieved by the quenching scheme is larger and can exceed by about 10%, the hardness uniformity is better, and the hardening depth can be accurately controlled by controlling the quenching and cooling times.
Description
Technical field
The present invention relates to workpiece quenching technical field, particularly a kind of surface hardening structure of large-diameter cylinder body class workpiece and quenching technical.
Background technology
For making the surface of workpiece, there is certain hardness, different temperature heat treatment furnace is usually adopted to carry out differential temperature process to workpiece in prior art, the certain thickness metal of surface of the work is made to be heated rapidly to hardening heat, different tissues is obtained inside and outside workpiece after Quenching Treatment, outside working lining reaches certain hardness, improve wearability, and internal layer has certain toughness.Its shortcoming is: uniformity of hardness affects by heating uniformity and water-spraying control uniformity, and uniformity of hardness is poor, and hardening depth influence factor is many, is difficult to control.
Summary of the invention
Technical problem to be solved by this invention is: the surface hardening structure and the quenching technical that provide a kind of large-diameter cylinder body class workpiece, improves case hardness uniformity, and hardening depth controllability.
The technical solution adopted for the present invention to solve the technical problems is: a kind of surface hardening structure of large-diameter cylinder body class workpiece, comprise barrel workpiece, capping and insulation material, heat insulating material filling is full of the inside of barrel workpiece, the end of barrel workpiece is closed by capping, and capping is fixed on the end of barrel workpiece by installing mechanism.
Further restriction, installing mechanism comprises pull bar and locking nut, the two ends of pull bar have the screw thread supporting with locking nut, the two ends of pull bar are each passed through capping, locking nut is arranged on the two ends of pull bar respectively, pressure is applied to capping, capping is fixed on the end of barrel workpiece by the mode compressed.
Further restriction, insulation material is yellow ground or asbestos.
A quenching technology for surfaces for barrel workpiece, has following processing step:
A. the surface hardening structure of above-mentioned large-diameter cylinder body class workpiece is heated, be heated to hardening heat;
B. the surface hardening structure of large-diameter cylinder body class workpiece is dropped in hardening media and carry out quench cooled, and regulate the hardening depth of barrel workpiece by the time controlling quench cooled;
C. tempering.
The invention has the beneficial effects as follows: relative to existing differential quenching technique, the attainable hardening depth of this quenching scheme is larger, can exceed about 10%, and uniformity of hardness is better, can control hardening depth exactly by the time controlling quench cooled; Especially this quenching technology for surfaces solves a surface hardening difficult problem for the major diameter cylinder class workpiece exceeding power frequency plant capacity.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation;
Fig. 1 is structural representation of the present invention;
In figure, 1. barrel workpiece, 2. capping, 3. insulation material, 4. pull bar, 5. locking nut.
Detailed description of the invention
As shown in Figure 1, a kind of surface hardening structure of large-diameter cylinder body class workpiece, comprise barrel workpiece 1, capping 2 and insulation material 3, the inside of full barrel workpiece 1 filled by insulation material 3, the end of barrel workpiece 1 is closed by capping 2, and capping 2 is fixed on the end of barrel workpiece 1 by installing mechanism.
Installing mechanism comprises pull bar 4 and locking nut 5, the two ends of pull bar 4 have the screw thread supporting with locking nut 5, the two ends of pull bar 4 are each passed through capping 2, locking nut 5 is arranged on the two ends of pull bar 4 respectively, pressure is applied to capping 2, capping 2 is fixed on the end of barrel workpiece 1 by the mode compressed.
Insulation material 3 is yellow ground or asbestos.
A quenching technology for surfaces for large-diameter cylinder body class workpiece, is characterized in that: have following processing step:
A. the surface hardening structure of above-mentioned large-diameter cylinder body class workpiece is heated, be heated to hardening heat;
B. the surface hardening structure of large-diameter cylinder body class workpiece is dropped in hardening media and carry out quench cooled, and regulate the hardening depth of barrel workpiece 1 by the time controlling quench cooled.Hardening media is selected according to the hardness requirement of material and client;
C. quenching hardness requirement is tempered to.
When quenching, the insulation material 3 of the surface hardening inside configuration of large-diameter cylinder body class workpiece is conducive to preventing hardening media from entering the inside of barrel workpiece 1, different tissues is obtained inside and outside workpiece after Quenching Treatment, outside working lining reaches certain hardness, improve wearability, and internal layer has certain toughness.Meanwhile, because outer lowering temperature uniform, make outer field hardness also more even.
Claims (4)
1. the surface hardening structure of a large-diameter cylinder body class workpiece, its feature: comprise barrel workpiece (1), capping (2) and insulation material (3), the inside of full barrel workpiece (1) filled by described insulation material (3), the end of barrel workpiece (1) is closed by capping (2), and capping (2) is fixed on the end of barrel workpiece (1) by installing mechanism.
2. the surface hardening structure of large-diameter cylinder body class workpiece according to claim 1, it is characterized in that: described installing mechanism comprises pull bar (4) and locking nut (5), the two ends of pull bar (4) have the screw thread supporting with locking nut (5), the two ends of pull bar (4) are each passed through capping (2), locking nut (5) is arranged on the two ends of pull bar (4) respectively, pressure is applied to capping (2), capping (2) is fixed on the end of barrel workpiece (1) by the mode compressed.
3. the surface hardening structure of large-diameter cylinder body class workpiece according to claim 1, is characterized in that: described insulation material (3) is yellow ground or asbestos.
4. a quenching technology for surfaces for large-diameter cylinder body class workpiece, is characterized in that: have following processing step:
A. the surface hardening structure of the large-diameter cylinder body class workpiece described in claim 1,2 or 3 is heated, be heated to hardening heat;
B. the surface hardening structure of large-diameter cylinder body class workpiece is dropped in hardening media and carry out quench cooled, and regulate the hardening depth of barrel workpiece (1) by the time controlling quench cooled;
C. tempering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410566130.1A CN104309172A (en) | 2014-10-22 | 2014-10-22 | Surface quenching structure and quenching process of large-diameter cylindrical workpieces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410566130.1A CN104309172A (en) | 2014-10-22 | 2014-10-22 | Surface quenching structure and quenching process of large-diameter cylindrical workpieces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104309172A true CN104309172A (en) | 2015-01-28 |
Family
ID=52364547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410566130.1A Pending CN104309172A (en) | 2014-10-22 | 2014-10-22 | Surface quenching structure and quenching process of large-diameter cylindrical workpieces |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104309172A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105200222A (en) * | 2015-09-16 | 2015-12-30 | 武汉船用机械有限责任公司 | Device for preventing shaft part from induction hardening cracking |
| CN105219936A (en) * | 2015-09-16 | 2016-01-06 | 武汉船用机械有限责任公司 | A kind of working method preventing Axle Surface induction quenching from ftractureing |
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 |
| CN101942550A (en) * | 2010-09-06 | 2011-01-12 | 中原特钢股份有限公司 | Heat treatment process for hollow drill collar |
| CN102443691A (en) * | 2011-12-07 | 2012-05-09 | 中联重科股份有限公司 | Steel tube as well as processing method and processing equipment for steel tube |
| CN102560064A (en) * | 2011-12-30 | 2012-07-11 | 中信重工机械股份有限公司 | Integral thermal treatment process for roller shell of high-pressure roller mill |
| CN103667665A (en) * | 2013-12-06 | 2014-03-26 | 天津重型装备工程研究有限公司 | Differential temperature thermal processing method for high-chromium cast steel centrifugation composite working roll |
| CN204183959U (en) * | 2014-10-22 | 2015-03-04 | 常州泉汇机械制造有限公司 | A kind of surface hardening structure of large-diameter cylinder body class workpiece |
-
2014
- 2014-10-22 CN CN201410566130.1A patent/CN104309172A/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 |
| CN101942550A (en) * | 2010-09-06 | 2011-01-12 | 中原特钢股份有限公司 | Heat treatment process for hollow drill collar |
| CN102443691A (en) * | 2011-12-07 | 2012-05-09 | 中联重科股份有限公司 | Steel tube as well as processing method and processing equipment for steel tube |
| CN102560064A (en) * | 2011-12-30 | 2012-07-11 | 中信重工机械股份有限公司 | Integral thermal treatment process for roller shell of high-pressure roller mill |
| CN103667665A (en) * | 2013-12-06 | 2014-03-26 | 天津重型装备工程研究有限公司 | Differential temperature thermal processing method for high-chromium cast steel centrifugation composite working roll |
| CN204183959U (en) * | 2014-10-22 | 2015-03-04 | 常州泉汇机械制造有限公司 | A kind of surface hardening structure of large-diameter cylinder body class workpiece |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105200222A (en) * | 2015-09-16 | 2015-12-30 | 武汉船用机械有限责任公司 | Device for preventing shaft part from induction hardening cracking |
| CN105219936A (en) * | 2015-09-16 | 2016-01-06 | 武汉船用机械有限责任公司 | A kind of working method preventing Axle Surface induction quenching from ftractureing |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150128 |