CN110715294B - On-line heating device for rolling surface of workpiece - Google Patents
On-line heating device for rolling surface of workpiece Download PDFInfo
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- CN110715294B CN110715294B CN201910890477.4A CN201910890477A CN110715294B CN 110715294 B CN110715294 B CN 110715294B CN 201910890477 A CN201910890477 A CN 201910890477A CN 110715294 B CN110715294 B CN 110715294B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/12—Radiant burners
- F23D14/14—Radiant burners using screens or perforated plates
- F23D14/145—Radiant burners using screens or perforated plates combustion being stabilised at a screen or a perforated plate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P9/00—Treating or finishing surfaces mechanically, with or without calibrating, primarily to resist wear or impact, e.g. smoothing or roughening turbine blades or bearings; Features of such surfaces not otherwise provided for, their treatment being unspecified
- B23P9/02—Treating or finishing by applying pressure, e.g. knurling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2203/00—Gaseous fuel burners
- F23D2203/10—Flame diffusing means
- F23D2203/104—Grids, e.g. honeycomb grids
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention relates to a heating device, in particular to an online heating device for rolling the surface of a workpiece. After heating to a preset temperature, the moving end of the heater is opened, the rolling tool rolls the surface of the outer circle of the workpiece, and the fixed end of the heater continues to heat and preserve heat of the workpiece in the rolling process. In the heating process, the ignition and temperature measuring device monitors the heating temperature of the workpiece in real time, the temperature signal is fed back to the control system, and the control system adjusts the gas flow to control the heating rate. The invention is used as an on-line heating device, and can also be used for experimental research or production application such as on-line heating auxiliary turning, on-line heating auxiliary grinding and the like.
Description
Technical Field
The invention relates to a heating device, in particular to an online heating device for rolling the surface of a workpiece.
Background
The critical structural components in the fields of vehicles, ships, aviation and the like are often subjected to cyclic load during service, so that fatigue fracture is easy to occur, and disastrous accidents are caused. Therefore, surface strengthening techniques for improving fatigue resistance of parts have been widely studied and applied.
Rolling is a surface strengthening technology that a rolling tool applies a certain static pressure to the surface of a workpiece to cause plastic deformation of the surface material, reduce the surface roughness, form a residual compressive stress and a hardened layer and change the microstructure of the surface layer. The wear resistance and fatigue resistance of the rolled parts are effectively improved, and the method is widely applied to surface strengthening processes of parts such as engine crankshafts, transmission shafts and connecting rods at present. Along with the development of science and technology, the improvement of equipment performance also puts forward higher requirement to the fatigue resistance performance of part, and traditional roll extrusion has not been able to satisfy the fatigue resistance performance requirement under the part complex environment, and compound roll extrusion strengthening technique has aroused the attention. The composite rolling can be the composition of various energy fields, such as warm rolling, electric pulse rolling, ultrasonic rolling and the like; or the combination of a plurality of surface strengthening technologies, such as surface carburization or nitridation + rolling, laser shock + rolling and the like.
Warm rolling, that is, a composite rolling strengthening means for heating the workpiece to a certain temperature for rolling. At present, the heating means mainly adopted comprise electromagnetic induction, resistance wires, laser and flame injection, and have the defects of complex and unsafe equipment, uneven and discontinuous heating, and the stable and effective online heating and rolling cannot be realized.
Disclosure of Invention
Aiming at the problems of the conventional heating auxiliary rolling, the invention provides a surface rolling online heating device which is used for heating treatment before workpiece rolling.
The invention discloses a surface rolling online heating device, which adopts the technical scheme that the device mainly comprises a combustion heater and a gas circulation control system, wherein the combustion heater comprises a heater moving end, a heater fixing end, a flame combustion chamber and an ignition and temperature measurement device, and the gas circulation control system comprises a screwing valve, a pressure reducing valve, a safety valve, an electromagnetic valve, a Venturi mixer, a control box and the like. Whole heater passes through the fixed plate, is fixed in on the lathe saddle layer board, and in the heating process, the work piece is in the clamping, treats the roll extrusion state, and heater removal end and heater stiff end are closed, wrap up the work piece wherein, and the work piece heating is given through the flame combustion chamber to the gas, and ignition and temperature measuring device real-time supervision work piece heating temperature feed back temperature signal to control system, and control system adjusts with control heating rate to gas flow. After the workpiece is heated to a preset temperature, the moving end of the heater is opened, the rolling tool rolls the workpiece in a heating preset area, and the workpiece is still in a heating and heat-preserving state in the rolling process.
Further, the gas circulation control system comprises a gas channel and an air channel, the initial gas pressure in the gas channel is reduced to a standard range through a pressure reducing valve, the initial gas pressure is adjusted through a screwed valve, gas with certain gas pressure and air are efficiently mixed through a Venturi mixer, enter a flame combustion chamber and are combusted, and workpieces are heated; the safety valve monitors the gas flow in the gas channel, and an alarm is given when the gas flow exceeds a safety value; the electromagnetic valve is connected with the control system, receives the instruction of the control system, and adjusts the gas flow entering the venturi mixer so as to control the flame intensity in the flame combustion chamber.
A honeycomb pore plate is arranged between the flame combustion chamber and the fixed end of the heater, and the flame in the flame combustion chamber uniformly heats the workpiece at the fixed end of the heater through the honeycomb pore plate.
The included angle between the fixed end of the heater and the axis of the clamped workpiece is in the range of 15-20 degrees, the included angle between the movable end of the heater and the fixed end of the heater is not less than 105 degrees after the movable end of the heater is opened, so that a rolling tool has sufficient space to roll the surface of the workpiece, and the movable end of the heater is fixed through a spring in the opening and closing mechanism after the movable end of the heater is opened.
The heater stiff end and the heater remove the end inside fill the heat preservation cotton, both sides all are equipped with the exhaust hole.
The ignition and temperature measuring device is arranged in the middle of the fixed end of the heater, and the movable end of the heater is opened and closed without interfering the temperature measurement.
The lathe tool rest is aligned with the center of the fixed end of the heater, so that the rolling tool can roll the heating center area of the workpiece conveniently.
The fixing plate is perpendicular to the axis of the workpiece and is adjustable in position.
In the heating process, the workpiece is in a rotary motion state, and the rotating speed is not lower than 60 revolutions per minute, so that the heating uniformity is ensured.
The invention has the advantages that the device is safe, convenient and reliable to operate and strong in adaptability by integrally designing the mechanical structure and the control system of the workpiece rolling device, uniform, stable and online heating treatment of the workpiece can be realized, and when the workpiece is heated to a preset temperature, the surface rolling reinforcement is carried out on the workpiece under a heat preservation condition, so that the one-stop processing treatment of the workpiece surface rolling is realized, and the problems of the heating auxiliary rolling at present are solved. In addition, the online heating device disclosed by the invention can also be used for experimental research or production application such as online heating auxiliary turning, online heating auxiliary grinding and the like.
Drawings
FIG. 1 is a front view of the surface-rolling in-line heating apparatus of the present invention;
FIG. 2 is a left side view of the surface rolling in-line heating apparatus of the present invention;
FIG. 3 is a top view of the surface rolling in-line heating apparatus of the present invention;
FIG. 4 is a three-dimensional view of the surface rolling in-line heating apparatus of the present invention;
FIG. 5 is a schematic view of the gas flow of the surface rolling on-line heating device of the present invention;
reference numerals: the device comprises a heater moving end 1, a heater fixing end 2, a flame combustion chamber 3, an ignition and temperature measuring device 4, a workpiece 5, a lathe chuck 6, a lathe thimble 7, a lathe tool rest 8, a fixing plate 9, a gas tank 10, a first 11 screwing valve, a second 12 screwing valve, a first 13 gas pressure gauge, a first 14 reducing valve, a second 15 gas pressure gauge, a first 16 safety valve, a third 17 screwing valve, a third 18 electromagnetic valve, a blower 19, a third 20 gas pressure gauge, a second 21 safety valve, a fourth 22 screwing valve and a venturi mixer 23.
Detailed Description
As shown in fig. 1-5, the surface rolling online heating device is composed of a combustion heater and a gas circulation control system, wherein the combustion heater comprises a heater moving end 1, a heater fixing end 2, a flame combustion chamber 3 and an ignition and temperature measuring device 4; the gas circulation control system comprises a gas tank 10, a first screw valve 11, a second screw valve 12, a first barometer 13, a pressure reducing valve 14, a second barometer 15, a first safety valve 16, a third screw valve 17, an electromagnetic valve 18, a blower 19, a third barometer 20, a second safety valve 21, a fourth screw valve 22 and a venturi mixer 23. After a heating command is started, the heater moving end 1 and the heater fixing end 2 are in a closed state, and fuel gas flows out of the gas tank 10 and sequentially passes through the first screwing valve 11, the second screwing valve 12, the first barometer 13, the pressure reducing valve 14, the second barometer 15, the first safety valve 16, the third screwing valve 17 and the electromagnetic valve 18 to reach the venturi mixer 23; the air flowing out of the blower 19 sequentially passes through a third air pressure gauge 20, a second safety valve 21 and a fourth screwing valve 22, reaches a Venturi mixer 23 and is mixed with the fuel gas; the mixed gas enters a flame combustion chamber 3, an ignition command of an ignition and temperature measurement device 4 is started, and the workpiece in the fixed end 2 of the heater is heated. The heater fixed end 2 is fixed on a supporting plate of a lathe tool rest 8 through a fixing plate 9, a workpiece 5 is clamped and fixed by a lathe chuck 6 and a lathe thimble 7, the heating movable end 1 is opened after the workpiece 5 is heated to a preset temperature, a rolling tool is clamped on the lathe tool rest 8, the workpiece 5 starts to be rolled, and the heater fixed end 2 continues to heat and preserve heat of the workpiece 5 during rolling; the ignition and temperature measuring device 4 monitors the surface temperature of the workpiece in real time in the heating process, and feeds back and adjusts the fuel ventilation control system.
In the invention, a honeycomb pore plate is arranged between a flame combustion chamber 3 and a heater fixed end 2, and the flame in the flame combustion chamber 3 uniformly heats a workpiece in the heater fixed end 2 through the honeycomb pore plate; in the heating process, the control system adjusts the gas flow through the control electromagnetic valve 18 according to the signals fed back by the ignition and temperature measurement device 4, and adjusts the intensity of flame in the flame combustion chamber 3; the included angle between the fixed end 2 of the heater and the axis of the clamped workpiece is 15-20 degrees, and the included angle between the movable end 1 of the heater and the fixed end 2 of the heater is not less than 105 degrees after the movable end of the heater is opened, so that a rolling tool has sufficient space to roll the workpiece, and interference is avoided.
While there have been shown and described what are at present considered the fundamental principles of the invention, its essential features and advantages, it should be understood by those skilled in the art that the above-described embodiments are not intended to limit the invention in any way, and that all technical solutions obtained by means of equivalents or equivalent changes fall within the scope of the invention.
Claims (6)
1. An on-line heating device for rolling the surface of a workpiece is characterized in that: comprises a combustion heater and a fuel gas circulation control system; the combustion heater comprises a heater moving end (1), a heater fixing end (2), a flame combustion chamber (3) and an ignition and temperature measuring device (4); the gas circulation control system comprises a gas tank (10), a first screwing valve (11), a second screwing valve (12), a first barometer (13), a pressure reducing valve (14), a second barometer (15), a first safety valve (16), a third screwing valve (17), an electromagnetic valve (18), a blower (19), a third barometer (20), a second safety valve (21), a fourth screwing valve (22) and a Venturi mixer (23); after a heating command is started, gas flows out of the gas tank (10), sequentially passes through the first screw valve (11), the second screw valve (12), the first barometer (13), the reducing valve (14), the second barometer (15), the first safety valve (16), the third screw valve (17) and the electromagnetic valve (18), and reaches the Venturi mixer (23); the air flowing out of the blower (19) sequentially passes through a third air pressure gauge (20), a second safety valve (21) and a fourth screwing valve (22) and reaches a Venturi mixer (23) to be mixed with the gas, and the Venturi mixer (23) can effectively mix the air and the gas and simultaneously can prevent the gas in the flame combustion chamber (3) from flowing back; the mixed gas enters a flame combustion chamber (3), an ignition command of an ignition and temperature measurement device (4) is started, and the workpiece in the fixed end (2) of the heater is heated; the fixed end (2) of the heater is fixed on a supporting plate of a lathe tool rest (8) through a fixing plate (9), the workpiece (5) is clamped and fixed by a lathe chuck (6) and a lathe thimble (7), after the workpiece (5) is heated to a preset temperature, the movable end (1) of the heater is opened, a rolling tool is clamped on the lathe tool rest (8) to start rolling the workpiece (5), and the fixed end (2) of the heater continues to heat and preserve heat of the workpiece (5) during rolling; the ignition and temperature measuring device (4) monitors the surface temperature of the workpiece in real time in the heating process, and feeds back and adjusts a fuel ventilation control system; a honeycomb pore plate is arranged between the flame combustion chamber (3) and the heater fixing end (2) to ensure that the flame uniformly heats the workpiece through the honeycomb pore plate; the fixed end (2) and the movable end (1) of the heater are filled with heat preservation cotton, and exhaust holes are formed in two sides; the included angle between the fixed end (2) of the heater and the axis of the clamped workpiece is in the range of 15-20 degrees, the included angle between the movable end (1) of the heater and the fixed end (2) of the heater is not less than 105 degrees after the movable end (1) of the heater is opened, so that a rolling tool has sufficient space to roll the surface of the workpiece without interference after the movable end (1) of the heater is opened, and the movable end (1) of the heater is fixed through a spring in an opening and closing mechanism after the movable end of the heater is opened.
2. The device according to claim 1, characterized in that during the heating process, the temperature signal detected by the ignition and temperature measuring device (4) is fed back to the control system, and the electromagnetic valve (18) receives the control system signal, adjusts the gas flow, realizes the control of the flame intensity in the flame combustion chamber (3), and further controls the heating temperature.
3. The device according to claim 1 or 2, characterized in that the screw valve one (11) acts as a main switch for the gas channel; the first gas pressure meter (13) displays the initial gas pressure in the gas channel and can be adjusted and controlled by screwing the second valve (12); the pressure reducing valve (14) reduces the initial gas pressure to a standard range; the second air pressure meter (15) displays the air pressure of the fuel gas flowing into the Venturi mixer (23) and can be adjusted and controlled through a third screwed valve (17).
4. The device according to claim 1 or 2, characterized in that the first safety valve (16) is capable of detecting the gas pressure of the gas flowing through and of generating an alarm when the gas pressure is too high.
5. The apparatus of claim 1 or 2, wherein: during the closed heating period of the fixed end (2) and the movable end (1) of the heater, the workpiece is in a rotating motion state, and the rotating speed is not lower than 60 revolutions per minute.
6. The apparatus of claim 1 or 2, wherein: the lathe tool rest (8) is aligned with the center of the heater fixing end (2), and the fixing plate (9) is vertical to the axis of the workpiece (5) and is adjustable in position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910890477.4A CN110715294B (en) | 2019-09-20 | 2019-09-20 | On-line heating device for rolling surface of workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910890477.4A CN110715294B (en) | 2019-09-20 | 2019-09-20 | On-line heating device for rolling surface of workpiece |
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| Publication Number | Publication Date |
|---|---|
| CN110715294A CN110715294A (en) | 2020-01-21 |
| CN110715294B true CN110715294B (en) | 2020-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910890477.4A Active CN110715294B (en) | 2019-09-20 | 2019-09-20 | On-line heating device for rolling surface of workpiece |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111229954A (en) * | 2019-11-20 | 2020-06-05 | 武汉科技大学 | Method for induction rolling composite connection of steel and aluminum dissimilar metals of automobile body |
| CN111531322A (en) * | 2020-04-26 | 2020-08-14 | 华南理工大学 | Induction heating auxiliary surface ultrasonic rolling device and method |
| CN112658689B (en) * | 2020-11-24 | 2022-06-03 | 河北机电职业技术学院 | Multi-dimensional protective cutting processing machine tool |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2543622Y (en) * | 2002-03-10 | 2003-04-09 | 王长征 | Rotary pressured wording machine for working ball-shape top barrel-shape work piece |
| CN201249244Y (en) * | 2008-08-15 | 2009-06-03 | 山东华源锅炉有限公司 | Corrugated flue forming machine |
| CN202581333U (en) * | 2012-04-25 | 2012-12-05 | 浙江远景铝业有限公司 | Automatic flame adjusting device of burner |
| CN206677496U (en) * | 2017-04-24 | 2017-11-28 | 河南中原吉凯恩气缸套有限公司 | A kind of cylinder cover inner hole Knurling device |
| EP2435589B1 (en) * | 2009-05-28 | 2019-03-13 | MTU Aero Engines GmbH | Method and apparatus for surface hardening a component, which is made of an intermetallic compound at least in the region of the surface to be hardened |
-
2019
- 2019-09-20 CN CN201910890477.4A patent/CN110715294B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2543622Y (en) * | 2002-03-10 | 2003-04-09 | 王长征 | Rotary pressured wording machine for working ball-shape top barrel-shape work piece |
| CN201249244Y (en) * | 2008-08-15 | 2009-06-03 | 山东华源锅炉有限公司 | Corrugated flue forming machine |
| EP2435589B1 (en) * | 2009-05-28 | 2019-03-13 | MTU Aero Engines GmbH | Method and apparatus for surface hardening a component, which is made of an intermetallic compound at least in the region of the surface to be hardened |
| CN202581333U (en) * | 2012-04-25 | 2012-12-05 | 浙江远景铝业有限公司 | Automatic flame adjusting device of burner |
| CN206677496U (en) * | 2017-04-24 | 2017-11-28 | 河南中原吉凯恩气缸套有限公司 | A kind of cylinder cover inner hole Knurling device |
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| CN110715294A (en) | 2020-01-21 |
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